diff --git a/bower.json b/bower.json
index b708e6d2da..780eaf8e4e 100644
--- a/bower.json
+++ b/bower.json
@@ -3,7 +3,7 @@
   "description": "The Backbone Framework",
   "homepage": "https://marionettejs.com/",
   "main": "./lib/backbone.marionette.js",
-  "version": "3.5.0",
+  "version": "3.5.1",
   "license": "MIT",
   "keywords": [
     "backbone",
diff --git a/changelog.md b/changelog.md
index d1fde58f52..b88b9e2b41 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,8 @@
+### v3.5.1 [view commit logs](https://github.com/marionettejs/backbone.marionette/compare/v3.5.0...v3.5.1)
+
+#### Fixes
+* `View` entity events set in `initialize` were being undelegated if `modelEvents` or `collectionEvents` were undefined.
+
 ### v3.5.0 [view commit logs](https://github.com/marionettejs/backbone.marionette/compare/v3.4.4...v3.5.0)
 
 #### Features
diff --git a/lib/backbone.marionette.esm.js b/lib/backbone.marionette.esm.js
index 06d82769d2..73812e1999 100644
--- a/lib/backbone.marionette.esm.js
+++ b/lib/backbone.marionette.esm.js
@@ -2,7 +2,7 @@
 * @license
 * MarionetteJS (Backbone.Marionette)
 * ----------------------------------
-* v3.5.0
+* v3.5.1
 *
 * Copyright (c)2017 Derick Bailey, Muted Solutions, LLC.
 * Distributed under MIT license
@@ -15,7 +15,7 @@ import Backbone from 'backbone';
 import _ from 'underscore';
 import Radio from 'backbone.radio';
 
-var version = "3.5.0";
+var version = "3.5.1";
 
 //Internal utility for creating context style global utils
 var proxy = function proxy(method) {
@@ -822,13 +822,19 @@ var BehaviorsMixin = {
 var DelegateEntityEventsMixin = {
   // Handle `modelEvents`, and `collectionEvents` configuration
   _delegateEntityEvents: function _delegateEntityEvents(model, collection) {
-    this._undelegateEntityEvents(model, collection);
-
     var modelEvents = _.result(this, 'modelEvents');
-    bindEvents.call(this, model, modelEvents);
+
+    if (modelEvents) {
+      unbindEvents.call(this, model, modelEvents);
+      bindEvents.call(this, model, modelEvents);
+    }
 
     var collectionEvents = _.result(this, 'collectionEvents');
-    bindEvents.call(this, collection, collectionEvents);
+
+    if (collectionEvents) {
+      unbindEvents.call(this, collection, collectionEvents);
+      bindEvents.call(this, collection, collectionEvents);
+    }
   },
   _undelegateEntityEvents: function _undelegateEntityEvents(model, collection) {
     var modelEvents = _.result(this, 'modelEvents');
diff --git a/lib/backbone.marionette.esm.js.map b/lib/backbone.marionette.esm.js.map
index b071f0c8e2..32a2d647ac 100644
--- a/lib/backbone.marionette.esm.js.map
+++ b/lib/backbone.marionette.esm.js.map
@@ -1 +1 @@
-{"version":3,"file":"backbone.marionette.esm.js","sources":["src/utils/proxy.js","src/utils/extend.js","src/utils/deprecate.js","src/common/is-node-attached.js","src/common/merge-options.js","src/common/get-option.js","src/common/normalize-methods.js","src/common/trigger-method.js","src/common/monitor-view-events.js","src/error.js","src/common/bind-events.js","src/common/bind-requests.js","src/utils/set-options.js","src/mixins/common.js","src/mixins/radio.js","src/object.js","src/template-cache.js","src/utils/invoke.js","src/mixins/behaviors.js","src/mixins/delegate-entity-events.js","src/utils/get-namespaced-event-name.js","src/config/features.js","src/mixins/triggers.js","src/mixins/ui.js","src/config/dom.js","src/mixins/view.js","src/common/view.js","src/region.js","src/common/build-region.js","src/mixins/regions.js","src/config/renderer.js","src/view.js","src/utils/emulate-collection.js","src/child-view-container.js","src/collection-view.js","src/next-child-view-container.js","src/next-collection-view.js","src/composite-view.js","src/behavior.js","src/application.js","src/app-router.js","src/config/behaviors-lookup.js","src/backbone.marionette.js"],"sourcesContent":["//Internal utility for creating context style global utils\nconst proxy = function(method) {\n  return function(context, ...args) {\n    return method.apply(context, args);\n  };\n};\n\nexport default proxy;\n","// Marionette.extend\n// -----------------\n\nimport Backbone from 'backbone';\n\n// Borrow the Backbone `extend` method so we can use it as needed\nconst extend = Backbone.Model.extend;\n\nexport default extend;\n","/* global console */\n\nimport _ from 'underscore';\n\nimport Marionette from '../backbone.marionette';\n\nconst deprecate = function(message, test) {\n  if (_.isObject(message)) {\n    message = (\n      message.prev + ' is going to be removed in the future. ' +\n      'Please use ' + message.next + ' instead.' +\n      (message.url ? ' See: ' + message.url : '')\n    );\n  }\n\n  if (!Marionette.DEV_MODE) {\n    return;\n  }\n\n  if ((test === undefined || !test) && !deprecate._cache[message]) {\n    deprecate._warn('Deprecation warning: ' + message);\n    deprecate._cache[message] = true;\n  }\n};\n\n/* istanbul ignore next: can't clear console */\ndeprecate._console = typeof console !== 'undefined' ? console : {};\ndeprecate._warn = function() {\n  const warn = deprecate._console.warn || deprecate._console.log || _.noop;\n  return warn.apply(deprecate._console, arguments);\n};\ndeprecate._cache = {};\n\nexport default deprecate;\n","// Marionette.isNodeAttached\n// -------------------------\n\n// Determine if `el` is a child of the document\nconst isNodeAttached = function(el) {\n  return document.documentElement.contains(el && el.parentNode);\n};\n\nexport default isNodeAttached;\n","import _ from 'underscore';\n\n// Merge `keys` from `options` onto `this`\nconst mergeOptions = function(options, keys) {\n  if (!options) { return; }\n\n  _.each(keys, (key) => {\n    const option = options[key];\n    if (option !== undefined) {\n      this[key] = option;\n    }\n  });\n};\n\nexport default mergeOptions;\n","// Marionette.getOption\n// --------------------\n\n// Retrieve an object, function or other value from the\n// object or its `options`, with `options` taking precedence.\nconst getOption = function(optionName) {\n  if (!optionName) { return; }\n  if (this.options && (this.options[optionName] !== undefined)) {\n    return this.options[optionName];\n  } else {\n    return this[optionName];\n  }\n};\n\nexport default getOption;\n","import _ from 'underscore';\n\n// Marionette.normalizeMethods\n// ----------------------\n\n// Pass in a mapping of events => functions or function names\n// and return a mapping of events => functions\nconst normalizeMethods = function(hash) {\n  return _.reduce(hash, (normalizedHash, method, name) => {\n    if (!_.isFunction(method)) {\n      method = this[method];\n    }\n    if (method) {\n      normalizedHash[name] = method;\n    }\n    return normalizedHash;\n  }, {});\n};\n\nexport default normalizeMethods;\n","// Trigger Method\n// --------------\n\nimport _ from 'underscore';\nimport getOption from './get-option';\n\n// split the event name on the \":\"\nconst splitter = /(^|:)(\\w)/gi;\n\n// take the event section (\"section1:section2:section3\")\n// and turn it in to uppercase name onSection1Section2Section3\nfunction getEventName(match, prefix, eventName) {\n  return eventName.toUpperCase();\n}\n\nconst getOnMethodName = _.memoize(function(event) {\n  return 'on' + event.replace(splitter, getEventName);\n});\n\n// Trigger an event and/or a corresponding method name. Examples:\n//\n// `this.triggerMethod(\"foo\")` will trigger the \"foo\" event and\n// call the \"onFoo\" method.\n//\n// `this.triggerMethod(\"foo:bar\")` will trigger the \"foo:bar\" event and\n// call the \"onFooBar\" method.\nexport function triggerMethod(event, ...args) {\n  // get the method name from the event name\n  const methodName = getOnMethodName(event);\n  const method = getOption.call(this, methodName);\n  let result;\n\n  // call the onMethodName if it exists\n  if (_.isFunction(method)) {\n    // pass all args, except the event name\n    result = method.apply(this, args);\n  }\n\n  // trigger the event\n  this.trigger.apply(this, arguments);\n\n  return result;\n}\n\n// triggerMethodOn invokes triggerMethod on a specific context\n//\n// e.g. `Marionette.triggerMethodOn(view, 'show')`\n// will trigger a \"show\" event or invoke onShow the view.\nexport function triggerMethodOn(context, ...args) {\n  if (_.isFunction(context.triggerMethod)) {\n    return context.triggerMethod.apply(context, args);\n  }\n\n  return triggerMethod.apply(context, args);\n}\n","// DOM Refresh\n// -----------\n\nimport _ from 'underscore';\nimport { triggerMethodOn } from './trigger-method';\n\n// Trigger method on children unless a pure Backbone.View\nfunction triggerMethodChildren(view, event, shouldTrigger) {\n  if (!view._getImmediateChildren) { return; }\n  _.each(view._getImmediateChildren(), child => {\n    if (!shouldTrigger(child)) { return; }\n    triggerMethodOn(child, event, child);\n  });\n}\n\nfunction shouldTriggerAttach(view) {\n  return !view._isAttached;\n}\n\nfunction shouldAttach(view) {\n  if (!shouldTriggerAttach(view)) { return false; }\n  view._isAttached = true;\n  return true;\n}\n\nfunction shouldTriggerDetach(view) {\n  return view._isAttached;\n}\n\nfunction shouldDetach(view) {\n  if (!shouldTriggerDetach(view)) { return false; }\n  view._isAttached = false;\n  return true;\n}\n\nfunction triggerDOMRefresh(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:refresh', view);\n  }\n}\n\nfunction triggerDOMRemove(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:remove', view);\n  }\n}\n\nfunction handleBeforeAttach() {\n  triggerMethodChildren(this, 'before:attach', shouldTriggerAttach);\n}\n\nfunction handleAttach() {\n  triggerMethodChildren(this, 'attach', shouldAttach);\n  triggerDOMRefresh(this);\n}\n\nfunction handleBeforeDetach() {\n  triggerMethodChildren(this, 'before:detach', shouldTriggerDetach);\n  triggerDOMRemove(this);\n}\n\nfunction handleDetach() {\n  triggerMethodChildren(this, 'detach', shouldDetach);\n}\n\nfunction handleBeforeRender() {\n  triggerDOMRemove(this);\n}\n\nfunction handleRender() {\n  triggerDOMRefresh(this);\n}\n\n// Monitor a view's state, propagating attach/detach events to children and firing dom:refresh\n// whenever a rendered view is attached or an attached view is rendered.\nfunction monitorViewEvents(view) {\n  if (view._areViewEventsMonitored || view.monitorViewEvents === false) { return; }\n\n  view._areViewEventsMonitored = true;\n\n  view.on({\n    'before:attach': handleBeforeAttach,\n    'attach': handleAttach,\n    'before:detach': handleBeforeDetach,\n    'detach': handleDetach,\n    'before:render': handleBeforeRender,\n    'render': handleRender\n  });\n}\n\nexport default monitorViewEvents;\n","// Error\n// -----\n\nimport _ from 'underscore';\nimport extend from './utils/extend';\nimport {version} from '../package.json';\n\nconst errorProps = ['description', 'fileName', 'lineNumber', 'name', 'message', 'number'];\n\nconst MarionetteError = extend.call(Error, {\n  urlRoot: `http://marionettejs.com/docs/v${version}/`,\n\n  constructor(message, options) {\n    if (_.isObject(message)) {\n      options = message;\n      message = options.message;\n    } else if (!options) {\n      options = {};\n    }\n\n    const error = Error.call(this, message);\n    _.extend(this, _.pick(error, errorProps), _.pick(options, errorProps));\n\n    this.captureStackTrace();\n\n    if (options.url) {\n      this.url = this.urlRoot + options.url;\n    }\n  },\n\n  captureStackTrace() {\n    if (Error.captureStackTrace) {\n      Error.captureStackTrace(this, MarionetteError);\n    }\n  },\n\n  toString() {\n    return this.name + ': ' + this.message + (this.url ? ' See: ' + this.url : '');\n  }\n});\n\nMarionetteError.extend = extend;\n\nexport default MarionetteError;\n","// Bind Entity Events & Unbind Entity Events\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone \"entity\" (e.g. collection/model)\n// to methods on a target object.\n//\n// The first parameter, `target`, must have the Backbone.Events module mixed in.\n//\n// The second parameter is the `entity` (Backbone.Model, Backbone.Collection or\n// any object that has Backbone.Events mixed in) to bind the events from.\n//\n// The third parameter is a hash of { \"event:name\": \"eventHandler\" }\n// configuration. Multiple handlers can be separated by a space. A\n// function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\n\n// Bind/unbind the event to handlers specified as a string of\n// handler names on the target object\nfunction bindFromStrings(target, entity, evt, methods, actionName) {\n  const methodNames = methods.split(/\\s+/);\n\n  if (methodNames.length > 1) {\n    deprecate('Multiple handlers for a single event are deprecated. If needed, use a single handler to call multiple methods.')\n  }\n\n  _.each(methodNames, function(methodName) {\n    const method = target[methodName];\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was configured as an event handler, but does not exist.`);\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\n// generic looping function\nfunction iterateEvents(target, entity, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindevents'\n    });\n  }\n\n  // iterate the bindings and bind/unbind them\n  _.each(bindings, function(method, evt) {\n\n    // allow for a list of method names as a string\n    if (_.isString(method)) {\n      bindFromStrings(target, entity, evt, method, actionName);\n      return;\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\nfunction bindEvents(entity, bindings) {\n  if (!entity || !bindings) { return this; }\n\n  iterateEvents(this, entity, bindings, 'listenTo');\n  return this;\n}\n\nfunction unbindEvents(entity, bindings) {\n  if (!entity) { return this; }\n\n  if (!bindings) {\n    this.stopListening(entity);\n    return this;\n  }\n\n  iterateEvents(this, entity, bindings, 'stopListening');\n  return this;\n}\n\n// Export Public API\nexport {\n  bindEvents,\n  unbindEvents\n};\n","// Bind/Unbind Radio Requests\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone.radio request\n// to methods on a target object.\n//\n// The first parameter, `target`, will set the context of the reply method\n//\n// The second parameter is the `Radio.channel` to bind the reply to.\n//\n// The third parameter is a hash of { \"request:name\": \"replyHandler\" }\n// configuration. A function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport normalizeMethods from './normalize-methods';\nimport MarionetteError from '../error';\n\nfunction iterateReplies(target, channel, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindrequests'\n    });\n  }\n\n  const normalizedRadioRequests = normalizeMethods.call(target, bindings);\n\n  channel[actionName](normalizedRadioRequests, target);\n}\n\nfunction bindRequests(channel, bindings) {\n  if (!channel || !bindings) { return this; }\n\n  iterateReplies(this, channel, bindings, 'reply');\n  return this;\n}\n\nfunction unbindRequests(channel, bindings) {\n  if (!channel) { return this; }\n\n  if (!bindings) {\n    channel.stopReplying(null, null, this);\n    return this;\n  }\n\n  iterateReplies(this, channel, bindings, 'stopReplying');\n  return this;\n}\n\nexport {\n  bindRequests,\n  unbindRequests\n};\n","import _ from 'underscore';\n\n// Internal utility for setting options consistently across Mn\nconst setOptions = function(options) {\n  this.options = _.extend({}, _.result(this, 'options'), options);\n};\n\nexport default setOptions;\n","import _setOptions from '../utils/set-options';\nimport getOption from '../common/get-option';\nimport mergeOptions from '../common/merge-options';\nimport normalizeMethods from '../common/normalize-methods';\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nexport default {\n\n  // Imports the \"normalizeMethods\" to transform hashes of\n  // events=>function references/names to a hash of events=>function references\n  normalizeMethods,\n\n  _setOptions,\n\n  // A handy way to merge passed-in options onto the instance\n  mergeOptions,\n\n  // Enable getting options from this or this.options by name.\n  getOption,\n\n  // Enable binding view's events from another entity.\n  bindEvents,\n\n  // Enable unbinding view's events from another entity.\n  unbindEvents\n};\n","import _ from 'underscore';\nimport Radio from 'backbone.radio';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from '../common/bind-requests';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nimport MarionetteError from '../error';\n\n// MixinOptions\n// - channelName\n// - radioEvents\n// - radioRequests\n\nexport default {\n\n  _initRadio() {\n    const channelName = _.result(this, 'channelName');\n\n    if (!channelName) {\n      return;\n    }\n\n    /* istanbul ignore next */\n    if (!Radio) {\n      throw new MarionetteError({\n        name: 'BackboneRadioMissing',\n        message: 'The dependency \"backbone.radio\" is missing.'\n      });\n    }\n\n    const channel = this._channel = Radio.channel(channelName);\n\n    const radioEvents = _.result(this, 'radioEvents');\n    this.bindEvents(channel, radioEvents);\n\n    const radioRequests = _.result(this, 'radioRequests');\n    this.bindRequests(channel, radioRequests);\n\n    this.on('destroy', this._destroyRadio);\n  },\n\n  _destroyRadio() {\n    this._channel.stopReplying(null, null, this);\n  },\n\n  getChannel() {\n    return this._channel;\n  },\n\n  // Proxy `bindEvents`\n  bindEvents: bindEvents,\n\n  // Proxy `unbindEvents`\n  unbindEvents: unbindEvents,\n\n  // Proxy `bindRequests`\n  bindRequests: bindRequests,\n\n  // Proxy `unbindRequests`\n  unbindRequests: unbindRequests\n\n};\n","// Object\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport extend from './utils/extend';\nimport { triggerMethod } from './common/trigger-method';\nimport CommonMixin from './mixins/common';\nimport RadioMixin from './mixins/radio';\n\nconst ClassOptions = [\n  'channelName',\n  'radioEvents',\n  'radioRequests'\n];\n\n// A Base Class that other Classes should descend from.\n// Object borrows many conventions and utilities from Backbone.\nconst MarionetteObject = function(options) {\n  if (!this.hasOwnProperty('options')) {\n    this._setOptions(options);\n  }\n  this.mergeOptions(options, ClassOptions);\n  this._setCid();\n  this._initRadio();\n  this.initialize.apply(this, arguments);\n};\n\nMarionetteObject.extend = extend;\n\n// Object Methods\n// --------------\n\n// Ensure it can trigger events with Backbone.Events\n_.extend(MarionetteObject.prototype, Backbone.Events, CommonMixin, RadioMixin, {\n  cidPrefix: 'mno',\n\n  // for parity with Marionette.AbstractView lifecyle\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return this._isDestroyed;\n  },\n\n  //this is a noop method intended to be overridden by classes that extend from this base\n  initialize() {},\n\n  _setCid() {\n    if (this.cid) { return; }\n    this.cid = _.uniqueId(this.cidPrefix);\n  },\n\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:destroy', this, ...args);\n\n    this._isDestroyed = true;\n    this.triggerMethod('destroy', this, ...args);\n    this.stopListening();\n\n    return this;\n  },\n\n  triggerMethod\n});\n\nexport default MarionetteObject;\n","// Template Cache\n// --------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport MarionetteError from './error';\n\n// Manage templates stored in `<script>` blocks,\n// caching them for faster access.\nconst TemplateCache = function(templateId) {\n  this.templateId = templateId;\n};\n\n// TemplateCache object-level methods. Manage the template\n// caches from these method calls instead of creating\n// your own TemplateCache instances\n_.extend(TemplateCache, {\n\n  templateCaches: {},\n\n  // Get the specified template by id. Either\n  // retrieves the cached version, or loads it\n  // from the DOM.\n  get(templateId, options) {\n    let cachedTemplate = this.templateCaches[templateId];\n\n    if (!cachedTemplate) {\n      cachedTemplate = new TemplateCache(templateId);\n      this.templateCaches[templateId] = cachedTemplate;\n    }\n\n    return cachedTemplate.load(options);\n  },\n\n  // Clear templates from the cache. If no arguments\n  // are specified, clears all templates:\n  // `clear()`\n  //\n  // If arguments are specified, clears each of the\n  // specified templates from the cache:\n  // `clear(\"#t1\", \"#t2\", \"...\")`\n  clear(...args) {\n    let i;\n    const length = args.length;\n\n    if (length > 0) {\n      for (i = 0; i < length; i++) {\n        delete this.templateCaches[args[i]];\n      }\n    } else {\n      this.templateCaches = {};\n    }\n  }\n});\n\n// TemplateCache instance methods, allowing each\n// template cache object to manage its own state\n// and know whether or not it has been loaded\n_.extend(TemplateCache.prototype, {\n\n  // Internal method to load the template\n  load(options) {\n    // Guard clause to prevent loading this template more than once\n    if (this.compiledTemplate) {\n      return this.compiledTemplate;\n    }\n\n    // Load the template and compile it\n    const template = this.loadTemplate(this.templateId, options);\n    this.compiledTemplate = this.compileTemplate(template, options);\n\n    return this.compiledTemplate;\n  },\n\n  // Load a template from the DOM, by default. Override\n  // this method to provide your own template retrieval\n  // For asynchronous loading with AMD/RequireJS, consider\n  // using a template-loader plugin as described here:\n  // https://github.com/marionettejs/backbone.marionette/wiki/Using-marionette-with-requirejs\n  loadTemplate(templateId, options) {\n    const $template = Backbone.$(templateId);\n\n    if (!$template.length) {\n      throw new MarionetteError({\n        name: 'NoTemplateError',\n        message: `Could not find template: \"${templateId}\"`\n      });\n    }\n    return $template.html();\n  },\n\n  // Pre-compile the template before caching it. Override\n  // this method if you do not need to pre-compile a template\n  // (JST / RequireJS for example) or if you want to change\n  // the template engine used (Handebars, etc).\n  compileTemplate(rawTemplate, options) {\n    return _.template(rawTemplate, options);\n  }\n});\n\nexport default TemplateCache;\n","// Implementation of the invoke method (http://underscorejs.org/#invoke) with support for\n// lodash v3, v4, and underscore.js\nimport _ from 'underscore';\n\nexport default _.invokeMap || _.invoke;\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport { triggerMethod } from '../common/trigger-method';\nimport Marionette from '../backbone.marionette';\n\n// MixinOptions\n// - behaviors\n\n// Takes care of getting the behavior class\n// given options and a key.\n// If a user passes in options.behaviorClass\n// default to using that.\n// If a user passes in a Behavior Class directly, use that\n// Otherwise delegate the lookup to the users `behaviorsLookup` implementation.\nfunction getBehaviorClass(options, key) {\n  if (options.behaviorClass) {\n    return options.behaviorClass;\n    //treat functions as a Behavior constructor\n  } else if (_.isFunction(options)) {\n    return options;\n  }\n\n  // behaviorsLookup can be either a flat object or a method\n  if (_.isFunction(Marionette.Behaviors.behaviorsLookup)) {\n    return Marionette.Behaviors.behaviorsLookup(options, key)[key];\n  }\n\n  return Marionette.Behaviors.behaviorsLookup[key];\n}\n\n// Iterate over the behaviors object, for each behavior\n// instantiate it and get its grouped behaviors.\n// This accepts a list of behaviors in either an object or array form\nfunction parseBehaviors(view, behaviors) {\n  return _.chain(behaviors).map(function(options, key) {\n    const BehaviorClass = getBehaviorClass(options, key);\n    //if we're passed a class directly instead of an object\n    const _options = options === BehaviorClass ? {} : options;\n    const behavior = new BehaviorClass(_options, view);\n    const nestedBehaviors = parseBehaviors(view, _.result(behavior, 'behaviors'));\n\n    return [behavior].concat(nestedBehaviors);\n  }).flatten().value();\n}\n\nexport default {\n  _initBehaviors() {\n    this._behaviors = this._getBehaviors();\n  },\n\n  _getBehaviors() {\n    const behaviors = _.result(this, 'behaviors');\n\n    // Behaviors defined on a view can be a flat object literal\n    // or it can be a function that returns an object.\n    return _.isObject(behaviors) ? parseBehaviors(this, behaviors) : {};\n  },\n\n  _getBehaviorTriggers() {\n    const triggers = _invoke(this._behaviors, 'getTriggers');\n    return _.reduce(triggers, function(memo, _triggers) {\n      return _.extend(memo, _triggers);\n    }, {});\n  },\n\n  _getBehaviorEvents() {\n    const events = _invoke(this._behaviors, 'getEvents');\n    return _.reduce(events, function(memo, _events) {\n      return _.extend(memo, _events);\n    }, {});\n  },\n\n  // proxy behavior $el to the view's $el.\n  _proxyBehaviorViewProperties() {\n    _invoke(this._behaviors, 'proxyViewProperties');\n  },\n\n  // delegate modelEvents and collectionEvents\n  _delegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'delegateEntityEvents');\n  },\n\n  // undelegate modelEvents and collectionEvents\n  _undelegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'undelegateEntityEvents');\n  },\n\n  _destroyBehaviors(...args) {\n    // Call destroy on each behavior after\n    // destroying the view.\n    // This unbinds event listeners\n    // that behaviors have registered for.\n    _invoke(this._behaviors, 'destroy', ...args);\n  },\n\n  // Remove a behavior\n  _removeBehavior(behavior) {\n    // Don't worry about the clean up if the view is destroyed\n    if (this._isDestroyed) { return; }\n\n    // Remove behavior-only triggers and events\n    this.undelegate(`.trig${ behavior.cid } .${ behavior.cid }`);\n\n    this._behaviors = _.without(this._behaviors, behavior);\n  },\n\n  _bindBehaviorUIElements() {\n    _invoke(this._behaviors, 'bindUIElements');\n  },\n\n  _unbindBehaviorUIElements() {\n    _invoke(this._behaviors, 'unbindUIElements');\n  },\n\n  _triggerEventOnBehaviors() {\n    const behaviors = this._behaviors;\n    // Use good ol' for as this is a very hot function\n    for (let i = 0, length = behaviors && behaviors.length; i < length; i++) {\n      triggerMethod.apply(behaviors[i], arguments);\n    }\n  }\n};\n","import _ from 'underscore';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\n// MixinOptions\n// - collectionEvents\n// - modelEvents\n\nexport default {\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  _delegateEntityEvents(model, collection) {\n    this._undelegateEntityEvents(model, collection);\n\n    const modelEvents = _.result(this, 'modelEvents');\n    bindEvents.call(this, model, modelEvents);\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n    bindEvents.call(this, collection, collectionEvents);\n  },\n\n  _undelegateEntityEvents(model, collection) {\n    const modelEvents = _.result(this, 'modelEvents');\n    unbindEvents.call(this, model, modelEvents);\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n    unbindEvents.call(this, collection, collectionEvents);\n  }\n};\n","// Borrow event splitter from Backbone\nconst delegateEventSplitter = /^(\\S+)\\s*(.*)$/;\n\n// Set event name to be namespaced using a unique index\n// to generate a non colliding event namespace\n// http://api.jquery.com/event.namespace/\nconst getNamespacedEventName = function(eventName, namespace) {\n  const match = eventName.match(delegateEventSplitter);\n  return `${ match[1] }.${ namespace } ${ match[2] }`;\n};\n\nexport default getNamespacedEventName;\n","// Add Feature flags here\n// e.g. 'class' => false\nconst FEATURES = {\n  childViewEventPrefix: true,\n  triggersStopPropagation: true,\n  triggersPreventDefault: true\n};\n\nfunction isEnabled(name) {\n  return !!FEATURES[name];\n}\n\nfunction setEnabled(name, state) {\n  return FEATURES[name] = state;\n}\n\nexport {\n  FEATURES,\n  setEnabled,\n  isEnabled\n};\n","import _ from 'underscore';\nimport getNamespacedEventName from '../utils/get-namespaced-event-name';\nimport { isEnabled } from '../config/features';\n\n// Internal method to create an event handler for a given `triggerDef` like\n// 'click:foo'\nfunction buildViewTrigger(view, triggerDef) {\n  if (_.isString(triggerDef)) {\n    triggerDef = {event: triggerDef};\n  }\n\n  const eventName = triggerDef.event;\n\n  let shouldPreventDefault = !!triggerDef.preventDefault;\n\n  if (isEnabled('triggersPreventDefault')) {\n    shouldPreventDefault = triggerDef.preventDefault !== false;\n  }\n\n  let shouldStopPropagation = !!triggerDef.stopPropagation;\n\n  if (isEnabled('triggersStopPropagation')) {\n    shouldStopPropagation = triggerDef.stopPropagation !== false;\n  }\n\n  return function(event) {\n    if (shouldPreventDefault) {\n      event.preventDefault();\n    }\n\n    if (shouldStopPropagation) {\n      event.stopPropagation();\n    }\n\n    view.triggerMethod(eventName, view, event);\n  };\n}\n\nexport default {\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  _getViewTriggers(view, triggers) {\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return _.reduce(triggers, (events, value, key) => {\n      key = getNamespacedEventName(key, `trig${ this.cid }`);\n      events[key] = buildViewTrigger(view, value);\n      return events;\n    }, {});\n  }\n\n};\n","import _ from 'underscore';\n// allows for the use of the @ui. syntax within\n// a given key for triggers and events\n// swaps the @ui with the associated selector.\n// Returns a new, non-mutated, parsed events hash.\nconst normalizeUIKeys = function(hash, ui) {\n  return _.reduce(hash, (memo, val, key) => {\n    const normalizedKey = normalizeUIString(key, ui);\n    memo[normalizedKey] = val;\n    return memo;\n  }, {});\n};\n\n// utility method for parsing @ui. syntax strings\n// into associated selector\nconst normalizeUIString = function(uiString, ui) {\n  return uiString.replace(/@ui\\.[a-zA-Z-_$0-9]*/g, (r) => {\n    return ui[r.slice(4)];\n  });\n};\n\n// allows for the use of the @ui. syntax within\n// a given value for regions\n// swaps the @ui with the associated selector\nconst normalizeUIValues = function(hash, ui, properties) {\n  _.each(hash, (val, key) => {\n    if (_.isString(val)) {\n      hash[key] = normalizeUIString(val, ui);\n    } else if (_.isObject(val) && _.isArray(properties)) {\n      _.extend(val, normalizeUIValues(_.pick(val, properties), ui));\n      /* Value is an object, and we got an array of embedded property names to normalize. */\n      _.each(properties, (property) => {\n        const propertyVal = val[property];\n        if (_.isString(propertyVal)) {\n          val[property] = normalizeUIString(propertyVal, ui);\n        }\n      });\n    }\n  });\n  return hash;\n};\n\nexport default {\n\n  // normalize the keys of passed hash with the views `ui` selectors.\n  // `{\"@ui.foo\": \"bar\"}`\n  normalizeUIKeys(hash) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIKeys(hash, uiBindings);\n  },\n\n  // normalize the passed string with the views `ui` selectors.\n  // `\"@ui.bar\"`\n  normalizeUIString(uiString) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIString(uiString, uiBindings);\n  },\n\n  // normalize the values of passed hash with the views `ui` selectors.\n  // `{foo: \"@ui.bar\"}`\n  normalizeUIValues(hash, properties) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIValues(hash, uiBindings, properties);\n  },\n\n  _getUIBindings() {\n    const uiBindings = _.result(this, '_uiBindings');\n    const ui = _.result(this, 'ui');\n    return uiBindings || ui;\n  },\n\n  // This method binds the elements specified in the \"ui\" hash inside the view's code with\n  // the associated jQuery selectors.\n  _bindUIElements() {\n    if (!this.ui) { return; }\n\n    // store the ui hash in _uiBindings so they can be reset later\n    // and so re-rendering the view will be able to find the bindings\n    if (!this._uiBindings) {\n      this._uiBindings = this.ui;\n    }\n\n    // get the bindings result, as a function or otherwise\n    const bindings = _.result(this, '_uiBindings');\n\n    // empty the ui so we don't have anything to start with\n    this._ui = {};\n\n    // bind each of the selectors\n    _.each(bindings, (selector, key) => {\n      this._ui[key] = this.$(selector);\n    });\n\n    this.ui = this._ui;\n  },\n\n  _unbindUIElements() {\n    if (!this.ui || !this._uiBindings) { return; }\n\n    // delete all of the existing ui bindings\n    _.each(this.ui, ($el, name) => {\n      delete this.ui[name];\n    });\n\n    // reset the ui element to the original bindings configuration\n    this.ui = this._uiBindings;\n    delete this._uiBindings;\n    delete this._ui;\n  },\n\n  _getUI(name) {\n    return this._ui[name];\n  }\n};\n","// DomApi\n//  ---------\nimport _ from 'underscore';\nimport Backbone from 'backbone';\n\n// Performant method for returning the jQuery instance\nfunction getEl(el) {\n  return el instanceof Backbone.$ ? el : Backbone.$(el);\n}\n\n// Static setter\nexport function setDomApi(mixin) {\n  this.prototype.Dom = _.extend({}, this.prototype.Dom, mixin);\n  return this;\n}\n\nexport default {\n\n  // Returns a new HTML DOM node instance\n  createBuffer() {\n    return document.createDocumentFragment();\n  },\n\n  // Lookup the `selector` string\n  // Selector may also be a DOM element\n  // Returns an array-like object of nodes\n  getEl(selector) {\n    return getEl(selector);\n  },\n\n  // Finds the `selector` string with the el\n  // Returns an array-like object of nodes\n  findEl(el, selector, _$el = getEl(el)) {\n    return _$el.find(selector);\n  },\n\n  // Returns true if the el contains the node childEl\n  hasEl(el, childEl) {\n    return el.contains(childEl && childEl.parentNode);\n  },\n\n  // Detach `el` from the DOM without removing listeners\n  detachEl(el, _$el = getEl(el)) {\n    _$el.detach();\n  },\n\n  // Remove `oldEl` from the DOM and put `newEl` in its place\n  replaceEl(newEl, oldEl) {\n    if (newEl === oldEl) {\n      return;\n    }\n\n    const parent = oldEl.parentNode;\n\n    if (!parent) {\n      return;\n    }\n\n    parent.replaceChild(newEl, oldEl);\n  },\n\n  // Swaps the location of `el1` and `el2` in the DOM\n  swapEl(el1, el2) {\n    if (el1 === el2) {\n      return;\n    }\n\n    const parent1 = el1.parentNode;\n    const parent2 = el2.parentNode;\n\n    if (!parent1 || !parent2) {\n      return;\n    }\n\n    const next1 = el1.nextSibling;\n    const next2 = el2.nextSibling;\n\n    parent1.insertBefore(el2, next1);\n    parent2.insertBefore(el1, next2);\n  },\n\n  // Replace the contents of `el` with the HTML string of `html`\n  setContents(el, html, _$el = getEl(el)) {\n    _$el.html(html);\n  },\n\n  // Takes the DOM node `el` and appends the DOM node `contents`\n  // to the end of the element's contents.\n  appendContents(el, contents, {_$el = getEl(el), _$contents = getEl(contents)} = {}) {\n    _$el.append(_$contents);\n  },\n\n  // Does the el have child nodes\n  hasContents(el) {\n    return !!el && el.hasChildNodes();\n  },\n\n  // Remove the inner contents of `el` from the DOM while leaving\n  // `el` itself in the DOM.\n  detachContents(el, _$el = getEl(el)) {\n    _$el.contents().detach();\n  }\n};\n","// ViewMixin\n//  ---------\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from '../common/trigger-method';\nimport BehaviorsMixin from './behaviors';\nimport CommonMixin from './common';\nimport DelegateEntityEventsMixin from './delegate-entity-events';\nimport TriggersMixin from './triggers';\nimport UIMixin from './ui';\nimport { isEnabled } from '../config/features';\nimport DomApi from '../config/dom';\n\n// MixinOptions\n// - behaviors\n// - childViewEventPrefix\n// - childViewEvents\n// - childViewTriggers\n// - collectionEvents\n// - modelEvents\n// - triggers\n// - ui\n\n\nconst ViewMixin = {\n  Dom: DomApi,\n\n  supportsRenderLifecycle: true,\n  supportsDestroyLifecycle: true,\n\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return !!this._isDestroyed;\n  },\n\n  _isRendered: false,\n\n  isRendered() {\n    return !!this._isRendered;\n  },\n\n  _isAttached: false,\n\n  isAttached() {\n    return !!this._isAttached;\n  },\n\n  // Overriding Backbone.View's `delegateEvents` to handle\n  // `events` and `triggers`\n  delegateEvents(eventsArg) {\n\n    this._proxyBehaviorViewProperties();\n    this._buildEventProxies();\n\n    const viewEvents = this._getEvents(eventsArg);\n\n    if (typeof eventsArg === 'undefined') {\n      this.events = viewEvents;\n    }\n\n    const combinedEvents = _.extend({},\n      this._getBehaviorEvents(),\n      viewEvents,\n      this._getBehaviorTriggers(),\n      this.getTriggers()\n    );\n\n    Backbone.View.prototype.delegateEvents.call(this, combinedEvents);\n\n    return this;\n  },\n\n  _getEvents(eventsArg) {\n    const events = eventsArg || this.events;\n\n    if (_.isFunction(events)) {\n      return this.normalizeUIKeys(events.call(this));\n    }\n\n    return this.normalizeUIKeys(events);\n  },\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Allow `triggers` to be configured as a function\n    const triggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return this._getViewTriggers(this, triggers);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.model, this.collection);\n\n    // bind each behaviors model and collection events\n    this._delegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle unbinding `modelEvents`, and `collectionEvents` configuration\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.model, this.collection);\n\n    // unbind each behaviors model and collection events\n    this._undelegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle destroying the view and its children.\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n    const shouldTriggerDetach = this._isAttached && !this._shouldDisableEvents;\n\n    this.triggerMethod('before:destroy', this, ...args);\n    if (shouldTriggerDetach) {\n      this.triggerMethod('before:detach', this);\n    }\n\n    // unbind UI elements\n    this.unbindUIElements();\n\n    // remove the view from the DOM\n    this._removeElement();\n\n    if (shouldTriggerDetach) {\n      this._isAttached = false;\n      this.triggerMethod('detach', this);\n    }\n\n    // remove children after the remove to prevent extra paints\n    this._removeChildren();\n\n    this._isDestroyed = true;\n    this._isRendered = false;\n\n    // Destroy behaviors after _isDestroyed flag\n    this._destroyBehaviors(...args);\n\n    this.triggerMethod('destroy', this, ...args);\n\n    this.stopListening();\n\n    return this;\n  },\n\n  // Equates to this.$el.remove\n  _removeElement() {\n    this.$el.off().removeData();\n    this.Dom.detachEl(this.el, this.$el);\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n    this._bindBehaviorUIElements();\n\n    return this;\n  },\n\n  // This method unbinds the elements specified in the \"ui\" hash\n  unbindUIElements() {\n    this._unbindUIElements();\n    this._unbindBehaviorUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // used as the prefix for child view events\n  // that are forwarded through the layoutview\n  childViewEventPrefix() {\n    return isEnabled('childViewEventPrefix') ? 'childview' : false;\n  },\n\n  // import the `triggerMethod` to trigger events with corresponding\n  // methods if the method exists\n  triggerMethod() {\n    const ret = triggerMethod.apply(this, arguments);\n\n    this._triggerEventOnBehaviors.apply(this, arguments);\n\n    return ret;\n  },\n\n  // Cache `childViewEvents` and `childViewTriggers`\n  _buildEventProxies() {\n    this._childViewEvents = _.result(this, 'childViewEvents');\n    this._childViewTriggers = _.result(this, 'childViewTriggers');\n  },\n\n  _proxyChildViewEvents(view) {\n    this.listenTo(view, 'all', this._childViewEventHandler);\n  },\n\n  _childViewEventHandler(eventName, ...args) {\n    const childViewEvents = this.normalizeMethods(this._childViewEvents);\n\n    // call collectionView childViewEvent if defined\n    if (typeof childViewEvents !== 'undefined' && _.isFunction(childViewEvents[eventName])) {\n      childViewEvents[eventName].apply(this, args);\n    }\n\n    // use the parent view's proxyEvent handlers\n    const childViewTriggers = this._childViewTriggers;\n\n    // Call the event with the proxy name on the parent layout\n    if (childViewTriggers && _.isString(childViewTriggers[eventName])) {\n      this.triggerMethod(childViewTriggers[eventName], ...args);\n    }\n\n    const prefix = _.result(this, 'childViewEventPrefix');\n\n    if (prefix !== false) {\n      const childEventName = prefix + ':' + eventName;\n\n      this.triggerMethod(childEventName, ...args);\n    }\n  }\n};\n\n_.extend(ViewMixin, BehaviorsMixin, CommonMixin, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default ViewMixin;\n","import { triggerMethodOn } from '../common/trigger-method';\n\nexport function renderView(view) {\n  if (view._isRendered) {\n    return;\n  }\n\n  if (!view.supportsRenderLifecycle) {\n    triggerMethodOn(view, 'before:render', view);\n  }\n\n  view.render();\n\n  if (!view.supportsRenderLifecycle) {\n    view._isRendered = true;\n    triggerMethodOn(view, 'render', view);\n  }\n}\n\nexport function destroyView(view) {\n  if (view.destroy) {\n    view.destroy();\n    return;\n  }\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'before:destroy', view);\n  }\n\n  const shouldTriggerDetach = view._isAttached && !view._shouldDisableEvents;\n\n  if (shouldTriggerDetach) {\n    triggerMethodOn(view, 'before:detach', view);\n  }\n\n  view.remove();\n\n  if (shouldTriggerDetach) {\n    view._isAttached = false;\n    triggerMethodOn(view, 'detach', view);\n  }\n\n  view._isDestroyed = true;\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'destroy', view);\n  }\n}\n","// Region\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport { renderView, destroyView } from './common/view';\nimport monitorViewEvents from './common/monitor-view-events';\nimport isNodeAttached from './common/is-node-attached';\nimport { triggerMethodOn } from './common/trigger-method';\nimport MarionetteObject from './object';\nimport MarionetteError from './error';\nimport View from './view';\nimport DomApi, { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'allowMissingEl',\n  'parentEl',\n  'replaceElement'\n];\n\nconst Region = MarionetteObject.extend({\n  Dom: DomApi,\n\n  cidPrefix: 'mnr',\n  replaceElement: false,\n  _isReplaced: false,\n  _isSwappingView: false,\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    // getOption necessary because options.el may be passed as undefined\n    this._initEl = this.el = this.getOption('el');\n\n    // Handle when this.el is passed in as a $ wrapped element.\n    this.el = this.el instanceof Backbone.$ ? this.el[0] : this.el;\n\n    if (!this.el) {\n      throw new MarionetteError({\n        name: 'NoElError',\n        message: 'An \"el\" must be specified for a region.'\n      });\n    }\n\n    this.$el = this.getEl(this.el);\n    MarionetteObject.call(this, options);\n  },\n\n  // Displays a backbone view instance inside of the region. Handles calling the `render`\n  // method for you. Reads content directly from the `el` attribute. The `preventDestroy`\n  // option can be used to prevent a view from the old view being destroyed on show.\n  show(view, options) {\n    if (!this._ensureElement(options)) {\n      return;\n    }\n\n    view = this._getView(view, options);\n\n    if (view === this.currentView) { return this; }\n\n    this._isSwappingView = !!this.currentView;\n\n    this.triggerMethod('before:show', this, view, options);\n\n    // Assume an attached view is already in the region for pre-existing DOM\n    if (!view._isAttached) {\n      this.empty(options);\n    }\n\n    this._setupChildView(view);\n\n    this.currentView = view;\n\n    renderView(view);\n\n    this._attachView(view, options);\n\n    this.triggerMethod('show', this, view, options);\n\n    this._isSwappingView = false;\n\n    return this;\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    this._proxyChildViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other than through the region.\n    // If this happens we need to remove the reference to the currentView since once a view\n    // has been destroyed we can not reuse it.\n    view.on('destroy', this._empty, this);\n  },\n\n  _proxyChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    parentView._proxyChildViewEvents(view);\n  },\n\n  // If the regions parent view is not monitoring its attach/detach events\n  _shouldDisableMonitoring() {\n    return this._parentView && this._parentView.monitorViewEvents === false;\n  },\n\n  _attachView(view, options = {}) {\n    const shouldTriggerAttach = !view._isAttached && isNodeAttached(this.el) && !this._shouldDisableMonitoring();\n    const shouldReplaceEl = typeof options.replaceElement === 'undefined' ? !!_.result(this, 'replaceElement') : !!options.replaceElement;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    if (shouldReplaceEl) {\n      this._replaceEl(view);\n    } else {\n      this.attachHtml(view);\n    }\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  _ensureElement(options = {}) {\n    if (!_.isObject(this.el)) {\n      this.$el = this.getEl(this.el);\n      this.el = this.$el[0];\n      // Make sure the $el contains only the el\n      this.$el = this.Dom.getEl(this.el);\n    }\n\n    if (!this.$el || this.$el.length === 0) {\n      const allowMissingEl = typeof options.allowMissingEl === 'undefined' ? !!_.result(this, 'allowMissingEl') : !!options.allowMissingEl;\n\n      if (allowMissingEl) {\n        return false;\n      } else {\n        throw new MarionetteError(`An \"el\" must exist in DOM for this region ${this.cid}`);\n      }\n    }\n    return true;\n  },\n\n  _getView(view) {\n    if (!view) {\n      throw new MarionetteError({\n        name: 'ViewNotValid',\n        message: 'The view passed is undefined and therefore invalid. You must pass a view instance to show.'\n      });\n    }\n\n    if (view._isDestroyed) {\n      throw new MarionetteError({\n        name: 'ViewDestroyedError',\n        message: `View (cid: \"${view.cid}\") has already been destroyed and cannot be used.`\n      });\n    }\n\n    if (view instanceof Backbone.View) {\n      return view;\n    }\n\n    const viewOptions = this._getViewOptions(view);\n\n    return new View(viewOptions);\n  },\n\n  // This allows for a template or a static string to be\n  // used as a template\n  _getViewOptions(viewOptions) {\n    if (_.isFunction(viewOptions)) {\n      return { template: viewOptions };\n    }\n\n    if (_.isObject(viewOptions)) {\n      return viewOptions;\n    }\n\n    const template = function() { return viewOptions; };\n\n    return { template };\n  },\n\n  // Override this method to change how the region finds the DOM element that it manages. Return\n  // a jQuery selector object scoped to a provided parent el or the document if none exists.\n  getEl(el) {\n    const context = _.result(this, 'parentEl');\n\n    if (context && _.isString(el)) {\n      return this.Dom.findEl(context, el);\n    }\n\n    return this.Dom.getEl(el);\n  },\n\n  _replaceEl(view) {\n    // always restore the el to ensure the regions el is present before replacing\n    this._restoreEl();\n\n    view.on('before:destroy', this._restoreEl, this);\n\n    this.Dom.replaceEl(view.el, this.el);\n\n    this._isReplaced = true;\n  },\n\n  // Restore the region's element in the DOM.\n  _restoreEl() {\n    // There is nothing to replace\n    if (!this._isReplaced) {\n      return;\n    }\n\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._detachView(view);\n\n    this._isReplaced = false;\n  },\n\n  // Check to see if the region's el was replaced.\n  isReplaced() {\n    return !!this._isReplaced;\n  },\n\n  // Check to see if a view is being swapped by another\n  isSwappingView() {\n    return !!this._isSwappingView;\n  },\n\n  // Override this method to change how the new view is appended to the `$el` that the\n  // region is managing\n  attachHtml(view) {\n    this.Dom.appendContents(this.el, view.el, {_$el: this.$el, _$contents: view.$el});\n  },\n\n  // Destroy the current view, if there is one. If there is no current view, it does\n  // nothing and returns immediately.\n  empty(options = { allowMissingEl: true }) {\n    const view = this.currentView;\n\n    // If there is no view in the region we should only detach current html\n    if (!view) {\n      if (this._ensureElement(options)) {\n        this.detachHtml();\n      }\n      return this;\n    }\n\n    const shouldDestroy = !options.preventDestroy;\n\n    if (!shouldDestroy) {\n      deprecate('The preventDestroy option is deprecated. Use Region#detachView');\n    }\n\n    this._empty(view, shouldDestroy);\n    return this;\n  },\n\n  _empty(view, shouldDestroy) {\n    view.off('destroy', this._empty, this);\n    this.triggerMethod('before:empty', this, view);\n\n    this._restoreEl();\n\n    delete this.currentView;\n\n    if (!view._isDestroyed) {\n      if (shouldDestroy) {\n        this.removeView(view);\n      } else {\n        this._detachView(view);\n      }\n      this._stopChildViewEvents(view);\n    }\n\n    this.triggerMethod('empty', this, view);\n  },\n\n  _stopChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    this._parentView.stopListening(view);\n  },\n\n  destroyView(view) {\n    if (view._isDestroyed) {\n      return view;\n    }\n\n    view._shouldDisableEvents = this._shouldDisableMonitoring();\n    destroyView(view);\n    return view;\n  },\n\n  removeView(view) {\n    this.destroyView(view);\n  },\n\n  // Empties the Region without destroying the view\n  // Returns the detached view\n  detachView() {\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._empty(view);\n\n    return view;\n  },\n\n  _detachView(view) {\n    const shouldTriggerDetach = view._isAttached && !this._shouldDisableMonitoring();;\n    const shouldRestoreEl = this._isReplaced;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    if (shouldRestoreEl) {\n      this.Dom.replaceEl(this.el, view.el);\n    } else {\n      this.detachHtml();\n    }\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the region detaches current content\n  detachHtml() {\n    this.Dom.detachContents(this.el, this.$el);\n  },\n\n  // Checks whether a view is currently present within the region. Returns `true` if there is\n  // and `false` if no view is present.\n  hasView() {\n    return !!this.currentView;\n  },\n\n  // Reset the region by destroying any existing view and clearing out the cached `$el`.\n  // The next time a view is shown via this region, the region will re-query the DOM for\n  // the region's `el`.\n  reset(options) {\n    this.empty(options);\n\n    if (this.$el) {\n      this.el = this._initEl;\n    }\n\n    delete this.$el;\n    return this;\n  },\n\n  destroy(options) {\n    if (this._isDestroyed) { return this; }\n\n    this.reset(options);\n\n    if (this._name) {\n      this._parentView._removeReferences(this._name);\n    }\n    delete this._parentView;\n    delete this._name;\n\n    return MarionetteObject.prototype.destroy.apply(this, arguments);\n  }\n}, {\n  setDomApi\n});\n\nexport default Region;\n","import _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\nimport Region from '../region';\n\n// return the region instance from the definition\nexport default function(definition, defaults) {\n  if (definition instanceof Region) {\n    return definition;\n  }\n\n  return buildRegionFromDefinition(definition, defaults);\n}\n\nfunction buildRegionFromDefinition(definition, defaults) {\n  const opts = _.extend({}, defaults);\n\n  if (_.isString(definition)) {\n    _.extend(opts, { el: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isFunction(definition)) {\n    _.extend(opts, { regionClass: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isObject(definition)) {\n    if (definition.selector) {\n      deprecate('The selector option on a Region definition object is deprecated. Use el to pass a selector string');\n    }\n\n    _.extend(opts, { el: definition.selector }, definition);\n\n    return buildRegionFromObject(opts);\n  }\n\n  throw new MarionetteError({\n    message: 'Improper region configuration type.',\n    url: 'marionette.region.html#region-configuration-types'\n  });\n}\n\nfunction buildRegionFromObject(definition) {\n  const RegionClass = definition.regionClass\n\n  const options = _.omit(definition, 'regionClass');\n\n  return new RegionClass(options);\n}\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport buildRegion from '../common/build-region';\nimport Region from '../region';\n\n// MixinOptions\n// - regions\n// - regionClass\n\nexport default {\n  regionClass: Region,\n\n  // Internal method to initialize the regions that have been defined in a\n  // `regions` attribute on this View.\n  _initRegions() {\n\n    // init regions hash\n    this.regions = this.regions || {};\n    this._regions = {};\n\n    this.addRegions(_.result(this, 'regions'));\n  },\n\n  // Internal method to re-initialize all of the regions by updating\n  // the `el` that they point to\n  _reInitRegions() {\n    _invoke(this._regions, 'reset');\n  },\n\n  // Add a single region, by name, to the View\n  addRegion(name, definition) {\n    const regions = {};\n    regions[name] = definition;\n    return this.addRegions(regions)[name];\n  },\n\n  // Add multiple regions as a {name: definition, name2: def2} object literal\n  addRegions(regions) {\n    // If there's nothing to add, stop here.\n    if (_.isEmpty(regions)) {\n      return;\n    }\n\n    // Normalize region selectors hash to allow\n    // a user to use the @ui. syntax.\n    regions = this.normalizeUIValues(regions, ['selector', 'el']);\n\n    // Add the regions definitions to the regions property\n    this.regions = _.extend({}, this.regions, regions);\n\n    return this._addRegions(regions);\n  },\n\n  // internal method to build and add regions\n  _addRegions(regionDefinitions) {\n    const defaults = {\n      regionClass: this.regionClass,\n      parentEl: _.partial(_.result, this, 'el')\n    };\n\n    return _.reduce(regionDefinitions, (regions, definition, name) => {\n      regions[name] = buildRegion(definition, defaults);\n      this._addRegion(regions[name], name);\n      return regions;\n    }, {});\n  },\n\n  _addRegion(region, name) {\n    this.triggerMethod('before:add:region', this, name, region);\n\n    region._parentView = this;\n    region._name = name;\n\n    this._regions[name] = region;\n\n    this.triggerMethod('add:region', this, name, region);\n  },\n\n  // Remove a single region from the View, by name\n  removeRegion(name) {\n    const region = this._regions[name];\n\n    this._removeRegion(region, name);\n\n    return region;\n  },\n\n  // Remove all regions from the View\n  removeRegions() {\n    const regions = this._getRegions();\n\n    _.each(this._regions, _.bind(this._removeRegion, this));\n\n    return regions;\n  },\n\n  _removeRegion(region, name) {\n    this.triggerMethod('before:remove:region', this, name, region);\n\n    region.destroy();\n\n    this.triggerMethod('remove:region', this, name, region);\n  },\n\n  // Called in a region's destroy\n  _removeReferences(name) {\n    delete this.regions[name];\n    delete this._regions[name];\n  },\n\n  // Empty all regions in the region manager, but\n  // leave them attached\n  emptyRegions() {\n    const regions = this.getRegions();\n    _invoke(regions, 'empty');\n    return regions;\n  },\n\n  // Checks to see if view contains region\n  // Accepts the region name\n  // hasRegion('main')\n  hasRegion(name) {\n    return !!this.getRegion(name);\n  },\n\n  // Provides access to regions\n  // Accepts the region name\n  // getRegion('main')\n  getRegion(name) {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._regions[name];\n  },\n\n  // Get all regions\n  _getRegions() {\n    return _.clone(this._regions);\n  },\n\n  getRegions() {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._getRegions();\n  },\n\n  showChildView(name, view, ...args) {\n    const region = this.getRegion(name);\n    return region.show(view, ...args);\n  },\n\n  detachChildView(name) {\n    return this.getRegion(name).detachView();\n  },\n\n  getChildView(name) {\n    return this.getRegion(name).currentView;\n  }\n\n};\n","// Renderer\n// --------\n\nimport _ from 'underscore';\nimport MarionetteError from '../error';\nimport TemplateCache from '../template-cache';\n\n// Render a template with data by passing in the template\n// selector and the data to render.\nconst Renderer = {\n\n  // Render a template with data. The `template` parameter is\n  // passed to the `TemplateCache` object to retrieve the\n  // template function. Override this method to provide your own\n  // custom rendering and template handling for all of Marionette.\n  render(template, data) {\n    if (!template) {\n      throw new MarionetteError({\n        name: 'TemplateNotFoundError',\n        message: 'Cannot render the template since its false, null or undefined.'\n      });\n    }\n\n    const templateFunc = _.isFunction(template) ? template : TemplateCache.get(template);\n\n    return templateFunc(data);\n  }\n};\n\nexport default Renderer;\n","// View\n// ---------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport ViewMixin from './mixins/view';\nimport RegionsMixin from './mixins/regions';\nimport Renderer from './config/renderer';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'regionClass',\n  'regions',\n  'template',\n  'templateContext',\n  'triggers',\n  'ui'\n];\n\n// The standard view. Includes view events, automatic rendering\n// of Underscore templates, nested views, and more.\nconst View = Backbone.View.extend({\n\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this._initRegions();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Serialize the view's model *or* collection, if\n  // it exists, for the template\n  serializeData() {\n    if (!this.model && !this.collection) {\n      return {};\n    }\n\n    // If we have a model, we serialize that\n    if (this.model) {\n      return this.serializeModel();\n    }\n\n    // Otherwise, we serialize the collection,\n    // making it available under the `items` property\n    return {\n      items: this.serializeCollection()\n    };\n  },\n\n  // Prepares the special `model` property of a view\n  // for being displayed in the template. By default\n  // we simply clone the attributes. Override this if\n  // you need a custom transformation for your view's model\n  serializeModel() {\n    if (!this.model) { return {}; }\n    return _.clone(this.model.attributes);\n  },\n\n  // Serialize a collection by cloning each of\n  // its model's attributes\n  serializeCollection() {\n    if (!this.collection) { return {}; }\n    return this.collection.map(function(model) { return _.clone(model.attributes); });\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // rendered or attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isRendered = this.Dom.hasContents(this.el);\n    this._isAttached = isNodeAttached(this.el);\n\n    if (this._isRendered) {\n      this.bindUIElements();\n    }\n\n    return this;\n  },\n\n  // Render the view, defaulting to underscore.js templates.\n  // You can override this in your view definition to provide\n  // a very specific rendering for your view. In general, though,\n  // you should override the `Marionette.Renderer` object to\n  // change how Marionette renders views.\n  // Subsequent renders after the first will re-render all nested\n  // views.\n  render() {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:render', this);\n\n    // If this is not the first render call, then we need to\n    // re-initialize the `el` for each region\n    if (this._isRendered) {\n      this._reInitRegions();\n    }\n\n    this._renderTemplate();\n    this.bindUIElements();\n\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n\n    return this;\n  },\n\n  // Internal method to render the template with the serialized data\n  // and template context via the `Marionette.Renderer` object.\n  _renderTemplate() {\n    const template = this.getTemplate();\n\n    // Allow template-less views\n    if (template === false) {\n      deprecate('template:false is deprecated.  Use _.noop.');\n      return;\n    }\n\n    // Add in entity data and template context\n    const data = this.mixinTemplateContext(this.serializeData());\n\n    // Render and add to el\n    const html = this._renderHtml(template, data);\n    this.attachElContent(html);\n  },\n\n  // Renders the data into the template\n  _renderHtml(template, data) {\n    return Renderer.render(template, data, this);\n  },\n\n  // Get the template for this view\n  // instance. You can set a `template` attribute in the view\n  // definition or pass a `template: \"whatever\"` parameter in\n  // to the constructor options.\n  getTemplate() {\n    return this.template;\n  },\n\n  // Mix in template context methods. Looks for a\n  // `templateContext` attribute, which can either be an\n  // object literal, or a function that returns an object\n  // literal. All methods and attributes from this object\n  // are copies to the object passed in.\n  mixinTemplateContext(target = {}) {\n    const templateContext = _.result(this, 'templateContext');\n    return _.extend(target, templateContext);\n  },\n\n  // Attaches the content of a given view.\n  // This method can be overridden to optimize rendering,\n  // or to render in a non standard way.\n  //\n  // For example, using `innerHTML` instead of `$el.html`\n  //\n  // ```js\n  // attachElContent(html) {\n  //   this.el.innerHTML = html;\n  //   return this;\n  // }\n  // ```\n  attachElContent(html) {\n    this.Dom.setContents(this.el, html, this.$el);\n\n    return this;\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this.removeRegions();\n  },\n\n  _getImmediateChildren() {\n    return _.chain(this._getRegions())\n      .map('currentView')\n      .compact()\n      .value();\n  }\n}, {\n  // Sets the renderer for the Marionette.View class\n  setRenderer(renderer) {\n    this.prototype._renderHtml = renderer;\n    return this;\n  },\n\n  setDomApi\n});\n\n_.extend(View.prototype, ViewMixin, RegionsMixin);\n\nexport default View;\n","// Mix in methods from Underscore, for iteration, and other\n// collection related features.\n// Borrowing this code from Backbone.Collection:\n// https://github.com/jashkenas/backbone/blob/1.1.2/backbone.js#L962\n\nimport _ from 'underscore';\n\nconst methods = ['forEach', 'each', 'map', 'find', 'detect', 'filter',\n                'select', 'reject', 'every', 'all', 'some', 'any', 'include',\n                'contains', 'invoke', 'toArray', 'first', 'initial', 'rest',\n                'last', 'without', 'isEmpty', 'pluck', 'reduce', 'partition'];\n\nconst emulateCollection = function(object, listProperty) {\n  _.each(methods, function(method) {\n    object[method] = function() {\n      const list = _.result(this, listProperty);\n      const args = Array.prototype.slice.call(arguments);\n      return _[method].apply(_, [list].concat(args));\n    };\n  });\n};\n\nexport default emulateCollection;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function(views) {\n  this._views = {};\n  this._indexByModel = {};\n  this._indexByCustom = {};\n  this._updateLength();\n\n  _.each(views, _.bind(this.add, this));\n};\n\nemulateCollection(Container.prototype, '_getViews');\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  _getViews() {\n    return _.values(this._views);\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Optionally specify\n  // a custom key to store an retrieve the view.\n  add(view, customIndex) {\n    return this._add(view, customIndex)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _add(view, customIndex) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._views[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // index by custom\n    if (customIndex) {\n      this._indexByCustom[customIndex] = viewCid;\n    }\n\n    return this;\n  },\n\n  // Find a view by the model that was attached to\n  // it. Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to\n  // it. Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by a custom indexer.\n  findByCustom(index) {\n    const viewCid = this._indexByCustom[index];\n    return this.findByCid(viewCid);\n  },\n\n  // Find by index. This is not guaranteed to be a\n  // stable index.\n  findByIndex(index) {\n    return _.values(this._views)[index];\n  },\n\n  // retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._views[cid];\n  },\n\n  // Remove a view\n  remove(view) {\n    return this._remove(view)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _remove(view) {\n    const viewCid = view.cid;\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // delete custom index\n    _.some(this._indexByCustom, _.bind(function(cid, key) {\n      if (cid === viewCid) {\n        delete this._indexByCustom[key];\n        return true;\n      }\n    }, this));\n\n    // remove the view from the container\n    delete this._views[viewCid];\n\n    return this;\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = _.size(this._views);\n\n    return this;\n  }\n});\n\nexport default Container;\n","// Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './child-view-container';\nimport MarionetteError from './error';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'filter',\n  'emptyView',\n  'emptyViewOptions',\n  'modelEvents',\n  'reorderOnSort',\n  'sort',\n  'triggers',\n  'ui',\n  'viewComparator'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n\n  // flag for maintaining the sorted order of the collection\n  sort: true,\n\n  // constructor\n  // option to pass `{sort: false}` to prevent the `CollectionView` from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  //\n  // option to pass `{viewComparator: compFunction()}` to allow the `CollectionView`\n  // to use a custom sort order for the collection.\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this.once('render', this._initialEvents);\n    this._initChildViewStorage();\n    this._bufferedChildren = [];\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Instead of inserting elements one by one into the page, it's much more performant to insert\n  // elements into a document fragment and then insert that document fragment into the page\n  _startBuffering() {\n    this._isBuffering = true;\n  },\n\n  _endBuffering() {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n    const triggerOnChildren = shouldTriggerAttach ? this._getImmediateChildren() : [];\n\n    this._isBuffering = false;\n\n    _.each(triggerOnChildren, child => {\n      triggerMethodOn(child, 'before:attach', child);\n    });\n\n    this.attachBuffer(this, this._createBuffer());\n\n    _.each(triggerOnChildren, child => {\n      child._isAttached = true;\n      triggerMethodOn(child, 'attach', child);\n    });\n\n    this._bufferedChildren = [];\n  },\n\n  _getImmediateChildren() {\n    return _.values(this.children._views);\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.render);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Handle a child added to the collection\n  _onCollectionAdd(child, collection, opts) {\n    // `index` is present when adding with `at` since BB 1.2; indexOf fallback for < 1.2\n    let index = opts.at !== undefined && (opts.index || collection.indexOf(child));\n\n    // When filtered or when there is no initial index, calculate index.\n    if (this.filter || index === false) {\n      index = _.indexOf(this._filteredSortedModels(index), child);\n    }\n\n    if (this._shouldAddChild(child, index)) {\n      this._destroyEmptyView();\n      this._addChild(child, index)\n    }\n  },\n\n  // Handle collection update model removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n    this._removeChildModels(changes.removed);\n  },\n\n  // Remove the child views and destroy them.\n  // This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  // \"models\" is an array of models and the corresponding views\n  // will be removed and destroyed from the CollectionView\n  _removeChildModels(models) {\n    // Used to determine where to update the remaining\n    // sibling view indices after these views are removed.\n    const removedViews = this._getRemovedViews(models);\n\n    if (!removedViews.length) {\n      return;\n    }\n\n    this.children._updateLength();\n\n    // decrement the index of views after this one\n    this._updateIndices(removedViews, false);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n  },\n\n  // Returns the views that will be used for re-indexing\n  // through CollectionView#_updateIndices.\n  _getRemovedViews(models) {\n\n    // Returning a view means something was removed.\n    return _.reduce(models, (removingViews, model) => {\n      const view = model && this.children.findByModel(model);\n\n      if (!view || view._isDestroyed) {\n        return removingViews;\n      }\n\n      this._removeChildView(view);\n\n      removingViews.push(view);\n\n      return removingViews;\n    }, []);\n  },\n\n  _removeChildView(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n\n    this.stopListening(view);\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views. Override this method to provide your own implementation of a\n  // render function for the collection view.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n    this._renderChildren();\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // An efficient rendering used for filtering. Instead of modifying the whole DOM for the\n  // collection view, we are only adding or removing the related childrenViews.\n  setFilter(filter, {preventRender} = {}) {\n    const canBeRendered = this._isRendered && !this._isDestroyed;\n    const filterChanged = this.filter !== filter;\n    const shouldRender = canBeRendered && filterChanged && !preventRender;\n\n    if (shouldRender) {\n      const previousModels = this._filteredSortedModels();\n      this.filter = filter;\n      const models = this._filteredSortedModels();\n      this._applyModelDeltas(models, previousModels);\n    } else {\n      this.filter = filter;\n    }\n\n    return this;\n  },\n\n  // `removeFilter` is actually an alias for removing filters.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  // Calculate and apply difference by cid between `models` and `previousModels`.\n  _applyModelDeltas(models, previousModels) {\n    const currentIds = {};\n    _.each(models, (model, index) => {\n      const addedChildNotExists = !this.children.findByModel(model);\n      if (addedChildNotExists) {\n        this._onCollectionAdd(model, this.collection, {at: index});\n      }\n      currentIds[model.cid] = true;\n    });\n\n    const removeModels = _.filter(previousModels, (prevModel) => {\n      return !currentIds[prevModel.cid] && this.children.findByModel(prevModel);\n    });\n\n    this._removeChildModels(removeModels);\n  },\n\n  // Reorder DOM after sorting. When your element's rendering do not use their index,\n  // you can pass reorderOnSort: true to only reorder the DOM after a sort instead of\n  // rendering all the collectionView.\n  reorder() {\n    const children = this.children;\n    const models = this._filteredSortedModels();\n\n    if (!models.length && this._showingEmptyView) { return this; }\n\n    const anyModelsAdded = _.some(models, function(model) {\n      return !children.findByModel(model);\n    });\n\n    // If there are any new models added due to filtering we need to add child views,\n    // so render as normal.\n    if (anyModelsAdded) {\n      this.render();\n    } else {\n\n      const filteredOutModels = [];\n\n      // Get the DOM nodes in the same order as the models and\n      // find the model that were children before but aren't in this new order.\n      const elsToReorder = _.reduce(this.children._views, function(viewEls, view) {\n        const index = _.indexOf(models, view.model);\n\n        if (index === -1) {\n          filteredOutModels.push(view.model);\n          return viewEls;\n        }\n\n        view._index = index;\n\n        viewEls[index] = view.el;\n\n        return viewEls;\n      }, new Array(models.length));\n\n      this.triggerMethod('before:reorder', this);\n\n      const elBuffer = this.Dom.createBuffer();\n\n      _.each(elsToReorder, (el) => {\n        this.Dom.appendContents(elBuffer, el);\n      });\n\n      // Since append moves elements that are already in the DOM, appending the elements\n      // will effectively reorder them.\n      this._appendReorderedChildren(elBuffer);\n\n      // remove any views that have been filtered out\n      this._removeChildModels(filteredOutModels);\n\n      this.triggerMethod('reorder', this);\n    }\n    return this;\n  },\n\n  // Render view after sorting. Override this method to change how the view renders\n  // after a `sort` on the collection.\n  resortView() {\n    if (this.reorderOnSort) {\n      this.reorder();\n    } else {\n      this._renderChildren();\n    }\n    return this;\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will render.\n  _sortViews() {\n    const models = this._filteredSortedModels();\n\n    // check for any changes in sort order of views\n    const orderChanged = _.find(models, (item, index) => {\n      const view = this.children.findByModel(item);\n      return !view || view._index !== index;\n    });\n\n    if (orderChanged) {\n      this.resortView();\n    }\n  },\n\n  // Internal reference to what index a `emptyView` is.\n  _emptyViewIndex: -1,\n\n  // Internal method. Separated so that CompositeView can append to the childViewContainer\n  // if necessary\n  _appendReorderedChildren(children) {\n    this.Dom.appendContents(this.el, children, {_$el: this.$el});\n  },\n\n  // Internal method. Separated so that CompositeView can have more control over events\n  // being triggered, around the rendering process\n  _renderChildren() {\n    if (this._isRendered) {\n      this._destroyEmptyView();\n      this._destroyChildren();\n    }\n\n    const models = this._filteredSortedModels();\n    if (this.isEmpty({processedModels: models})) {\n      this._showEmptyView();\n    } else {\n      this.triggerMethod('before:render:children', this);\n      this._startBuffering();\n      this._showCollection(models);\n      this._endBuffering();\n      this.triggerMethod('render:children', this);\n    }\n  },\n\n  _createView(model, index) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model, index);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n    return view;\n  },\n\n  _setupChildView(view, index) {\n    monitorViewEvents(view);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n\n    if (this.sort) {\n      view._index = index;\n    }\n  },\n\n  // Internal method to loop through collection and show each child view.\n  _showCollection(models) {\n    _.each(models, _.bind(this._addChild, this));\n    this.children._updateLength();\n  },\n\n  // Allow the collection to be sorted by a custom view comparator\n  _filteredSortedModels(addedAt) {\n    if (!this.collection || !this.collection.length) { return []; }\n\n    const viewComparator = this.getViewComparator();\n    let models = this.collection.models;\n    addedAt = Math.min(Math.max(addedAt, 0), models.length - 1);\n\n    if (viewComparator) {\n      let addedModel;\n      // Preserve `at` location, even for a sorted view\n      if (addedAt) {\n        addedModel = models[addedAt];\n        models = models.slice(0, addedAt).concat(models.slice(addedAt + 1));\n      }\n      models = this._sortModelsBy(models, viewComparator);\n      if (addedModel) {\n        models.splice(addedAt, 0, addedModel);\n      }\n    }\n\n    // Filter after sorting in case the filter uses the index\n    models = this._filterModels(models);\n\n    return models;\n  },\n\n  getViewComparator() {\n    return this.viewComparator;\n  },\n\n  // Filter an array of models, if a filter exists\n  _filterModels(models) {\n    if (this.filter) {\n      models = _.filter(models, (model, index) => {\n        return this._shouldAddChild(model, index);\n      });\n    }\n    return models;\n  },\n\n  _sortModelsBy(models, comparator) {\n    if (typeof comparator === 'string') {\n      return _.sortBy(models, (model) => {\n        return model.get(comparator);\n      });\n    } else if (comparator.length === 1) {\n      return _.sortBy(models, _.bind(comparator, this));\n    } else {\n      return _.clone(models).sort(_.bind(comparator, this));\n    }\n  },\n\n  // Internal method to show an empty view in place of a collection of child views,\n  // when the collection is empty\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (EmptyView && !this._showingEmptyView) {\n      this._showingEmptyView = true;\n\n      const model = new Backbone.Model();\n      let emptyViewOptions =\n        this.emptyViewOptions || this.childViewOptions;\n      if (_.isFunction(emptyViewOptions)) {\n        emptyViewOptions = emptyViewOptions.call(this, model, this._emptyViewIndex);\n      }\n\n      const view = this.buildChildView(model, EmptyView, emptyViewOptions);\n\n      this.triggerMethod('before:render:empty', this, view);\n      this.addChildView(view, 0);\n      this.triggerMethod('render:empty', this, view);\n    }\n  },\n\n  // Internal method to destroy an existing emptyView instance if one exists. Called when\n  // a collection view has been rendered empty, and then a child is added to the collection.\n  _destroyEmptyView() {\n    if (this._showingEmptyView) {\n      this.triggerMethod('before:remove:empty', this);\n\n      this._destroyChildren();\n      delete this._showingEmptyView;\n\n      this.triggerMethod('remove:empty', this);\n    }\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  // Internal method for building and adding a child view\n  _addChild(child, index) {\n    const view = this._createView(child, index);\n    this.addChildView(view, index);\n\n    return view;\n  },\n\n  _getChildViewOptions(child, index) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child, index);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index.\n  // This will also update the indices of later views in the collection in order to keep the\n  // children in sync with the collection.\n  addChildView(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n    this._setupChildView(view, index);\n\n    // Store the child view itself so we can properly remove and/or destroy it later\n    if (this._isBuffering) {\n      // Add to children, but don't update children's length.\n      this.children._add(view);\n    } else {\n      // increment indices of views after this one\n      this._updateIndices(view, true);\n      this.children.add(view);\n    }\n\n    renderView(view);\n\n    this._attachView(view, index);\n\n    this.triggerMethod('add:child', this, view);\n\n    return view;\n  },\n\n  // Internal method. This decrements or increments the indices of views after the added/removed\n  // view to keep in sync with the collection.\n  _updateIndices(views, increment) {\n    if (!this.sort) {\n      return;\n    }\n\n    if (!increment) {\n      _.each(_.sortBy(this.children._views, '_index'), (view, index) => {\n        view._index = index;\n      });\n\n      return;\n    }\n\n    const view = _.isArray(views) ? _.max(views, '_index') : views;\n\n    if (_.isObject(view)) {\n      // update the indexes of views after this one\n      _.each(this.children._views, (laterView) => {\n        if (laterView._index >= view._index) {\n          laterView._index += 1;\n        }\n      });\n    }\n  },\n\n  _attachView(view, index) {\n    // Only trigger attach if already attached and not buffering,\n    // otherwise _endBuffering() or Region#show() handles this.\n    const shouldTriggerAttach = !view._isAttached && !this._isBuffering && this._isAttached && this.monitorViewEvents !== false;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    this.attachHtml(this, view, index);\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  // Build a `childView` for a model in the collection.\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  // Remove the child view and destroy it. This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  removeChildView(view) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    this._removeChildView(view);\n    this.children._updateLength();\n    // decrement the index of views after this one\n    this._updateIndices(view, false);\n    return view;\n  },\n\n  // check if the collection is empty or optionally whether an array of pre-processed models is empty\n  isEmpty(options) {\n    let models;\n    if (_.result(options, 'processedModels')) {\n      models = options.processedModels;\n    } else {\n      models = this.collection ? this.collection.models : [];\n      models = this._filterModels(models);\n    }\n    return models.length === 0;\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(collectionView, buffer) {\n    this.Dom.appendContents(collectionView.el, buffer, {_$el: collectionView.$el});\n  },\n\n  // Create a fragment buffer from the currently buffered children\n  _createBuffer() {\n    const elBuffer = this.Dom.createBuffer();\n    _.each(this._bufferedChildren, (b) => {\n      this.Dom.appendContents(elBuffer, b.el, {_$contents: b.$el});\n    });\n    return elBuffer;\n  },\n\n  // Append the HTML to the collection's `el`. Override this method to do something other\n  // than `.append`.\n  attachHtml(collectionView, childView, index) {\n    if (collectionView._isBuffering) {\n      // buffering happens on reset events and initial renders\n      // in order to reduce the number of inserts into the\n      // document, which are expensive.\n      collectionView._bufferedChildren.splice(index, 0, childView);\n    } else {\n      // If we've already rendered the main collection, append\n      // the new child into the correct order if we need to. Otherwise\n      // append to the end.\n      if (!collectionView._insertBefore(childView, index)) {\n        collectionView._insertAfter(childView);\n      }\n    }\n  },\n\n  // Internal method. Check whether we need to insert the view into the correct position.\n  _insertBefore(childView, index) {\n    let currentView;\n    const findPosition = this.sort && (index < this.children.length - 1);\n    if (findPosition) {\n      // Find the view after this one\n      currentView = _.find(this.children._views, (view) => {\n        return view._index === index + 1;\n      });\n    }\n\n    if (currentView) {\n      this.beforeEl(currentView.el, childView.el);\n      return true;\n    }\n\n    return false;\n  },\n\n  // Override to handle DOM inserting differently\n  beforeEl(el, siblings) {\n    this.$(el).before(siblings);\n  },\n\n  // Internal method. Append a view to the end of the $el\n  _insertAfter(childView) {\n    this.Dom.appendContents(this.el, childView.el, {_$el: this.$el, _$contents: childView.$el});\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren(options) {\n    if (!this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.children._updateLength();\n    this.triggerMethod('destroy:children', this);\n  },\n\n  // Return true if the given child should be shown. Return false otherwise.\n  // The filter will be passed (child, index, collection), where\n  //  'child' is the given model\n  //  'index' is the index of that model in the collection\n  //  'collection' is the collection referenced by this CollectionView\n  _shouldAddChild(child, index) {\n    const filter = this.filter;\n    return !_.isFunction(filter) || filter.call(this, child, index, this.collection);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function() {\n  this._init();\n};\n\nemulateCollection(Container.prototype, '_views');\n\nfunction stringComparator(comparator, view) {\n  return view.model && view.model.get(comparator);\n}\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  // Initializes an empty container\n  _init() {\n    this._views = [];\n    this._viewsByCid = {};\n    this._indexByModel = {};\n    this._updateLength();\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Additionally it stores\n  // the view by index in the _views array\n  _add(view, index = this._views.length) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._viewsByCid[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // add to end by default\n    this._views.splice(index, 0, view);\n\n    this._updateLength();\n  },\n\n  // Sort (mutate) and return the array of the child views.\n  _sort(comparator, context) {\n    if (typeof comparator === 'string') {\n      comparator = _.partial(stringComparator, comparator);\n      return this._sortBy(comparator);\n    }\n\n    if (comparator.length === 1) {\n      return this._sortBy(_.bind(comparator, context));\n    }\n\n    return this._views.sort(_.bind(comparator, context));\n  },\n\n  // Makes `_.sortBy` mutate the array to match `this._views.sort`\n  _sortBy(comparator) {\n    const sortedViews = _.sortBy(this._views, comparator);\n\n    this._set(sortedViews);\n\n    return sortedViews;\n  },\n\n  // Replace array contents without overwriting the reference.\n  _set(views) {\n    this._views.length = 0;\n\n    this._views.push.apply(this._views, views.slice(0));\n\n    this._updateLength();\n  },\n\n  // Swap views by index\n  _swap(view1, view2) {\n    const view1Index = this.findIndexByView(view1);\n    const view2Index = this.findIndexByView(view2);\n\n    if (view1Index === -1 || view2Index === -1) {\n      return;\n    }\n\n    const swapView = this._views[view1Index];\n    this._views[view1Index] = this._views[view2Index];\n    this._views[view2Index] = swapView;\n  },\n\n  // Find a view by the model that was attached to it.\n  // Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to it.\n  // Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by index.\n  findByIndex(index) {\n    return this._views[index];\n  },\n\n  // Find the index of a view instance\n  findIndexByView(view) {\n    return this._views.indexOf(view);\n  },\n\n  // Retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._viewsByCid[cid];\n  },\n\n  hasView(view) {\n    return !!this.findByCid(view.cid);\n  },\n\n  // Remove a view and clean up index references.\n  _remove(view) {\n    if (!this._viewsByCid[view.cid]) {\n      return;\n    }\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // remove the view from the container\n    delete this._viewsByCid[view.cid];\n\n    const index = this.findIndexByView(view);\n    this._views.splice(index, 1);\n\n    this._updateLength();\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = this._views.length;\n  }\n});\n\nexport default Container;\n","// Next Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './next-child-view-container';\nimport MarionetteError from './error';\nimport Region from './region';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'emptyView',\n  'emptyViewOptions',\n  'events',\n  'modelEvents',\n  'sortWithCollection',\n  'triggers',\n  'ui',\n  'viewComparator',\n  'viewFilter'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n  // flag for maintaining the sorted order of the collection\n  sortWithCollection: true,\n\n  // constructor\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this.once('render', this._initialEvents);\n\n    // This children container isn't really used by a render, but it provides\n    // the ability to check `this.children.length` prior to rendering\n    // It also allows for cases where only addChildView is used\n    this._initChildViewStorage();\n    this._initBehaviors();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    // Init empty region\n    this.getEmptyRegion();\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // Create an region to show the emptyView\n  getEmptyRegion() {\n    if (this._emptyRegion && !this._emptyRegion.isDestroyed()) {\n      return this._emptyRegion;\n    }\n\n    this._emptyRegion = new Region({ el: this.el, replaceElement: false });\n\n    this._emptyRegion._parentView = this;\n\n    return this._emptyRegion;\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    this.listenTo(this.collection, {\n      'sort': this._onCollectionSort,\n      'reset': this._onCollectionReset,\n      'update': this._onCollectionUpdate\n    });\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will re-sort.\n  _onCollectionSort(collection, { add, merge, remove }) {\n    if (!this.sortWithCollection || this.viewComparator === false) {\n      return;\n    }\n\n    // If the data is changing we will handle the sort later in `_onCollectionUpdate`\n    if (add || remove || merge) {\n      return;\n    }\n\n    // If the only thing happening here is sorting, sort.\n    this.sort();\n  },\n\n  _onCollectionReset() {\n    this.render();\n  },\n\n  // Handle collection update model additions and  removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n\n    // Remove first since it'll be a shorter array lookup.\n    const removedViews = changes.removed.length && this._removeChildModels(changes.removed);\n\n    this._addedViews = changes.added.length && this._addChildModels(changes.added);\n\n    this._detachChildren(removedViews);\n\n    this._showChildren();\n\n    // Destroy removed child views after all of the render is complete\n    this._removeChildViews(removedViews);\n  },\n\n  _removeChildModels(models) {\n    return _.reduce(models, (views, model) => {\n      const removeView = this._removeChildModel(model);\n\n      if (removeView) { views.push(removeView); }\n\n      return views;\n    }, []);\n  },\n\n  _removeChildModel(model) {\n    const view = this.children.findByModel(model);\n\n    if (view) { this._removeChild(view); }\n\n    return view;\n  },\n\n  _removeChild(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Added views are returned for consistency with _removeChildModels\n  _addChildModels(models) {\n    return _.map(models, _.bind(this._addChildModel, this));\n  },\n\n  _addChildModel(model) {\n    const view = this._createChildView(model);\n\n    this._addChild(view);\n\n    return view;\n  },\n\n  _createChildView(model) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n\n    return view;\n  },\n\n  _addChild(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n\n    this._setupChildView(view);\n    this.children._add(view, index);\n\n    this.triggerMethod('add:child', this, view);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  _getChildViewOptions(child) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Build a `childView` for a model in the collection.\n  // Override to customize the build\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other\n    // than through the CollectionView.\n    // If this happens we need to remove the reference to the view\n    // since once a view has been destroyed we can not reuse it.\n    view.on('destroy', this.removeChildView, this);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n  },\n\n  // used by ViewMixin's `_childViewEventHandler`\n  _getImmediateChildren() {\n    return this.children._views;\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n\n    this._destroyChildren();\n\n    // After all children have been destroyed re-init the container\n    this.children._init();\n\n    if (this.collection) {\n      this._addChildModels(this.collection.models);\n    }\n\n    this._showChildren();\n\n    this._isRendered = true;\n\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // Sorts the children then filters and renders the results.\n  sort() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    this._showChildren();\n\n    return this;\n  },\n\n  _showChildren() {\n    if (this.isEmpty()) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._sortChildren();\n\n    this.filter();\n  },\n\n  // Returns true if the collectionView is considered empty.\n  // This is called twice during a render. Once to check the data,\n  // and again when views are filtered. Override this function to\n  // customize what empty means.\n  isEmpty(allViewsFiltered) {\n    return allViewsFiltered || !this.children.length;\n  },\n\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (!EmptyView) {\n      return;\n    }\n\n    const options = this._getEmptyViewOptions();\n\n    const emptyRegion = this.getEmptyRegion();\n\n    emptyRegion.show(new EmptyView(options));\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Remove the emptyView\n  _destroyEmptyView() {\n    const emptyRegion = this.getEmptyRegion();\n    // Only empty if a view is show so the region\n    // doesn't detach any other unrelated HTML\n    if (emptyRegion.hasView()) {\n      emptyRegion.empty();\n    }\n  },\n\n  //\n  _getEmptyViewOptions() {\n    const emptyViewOptions = this.emptyViewOptions || this.childViewOptions;\n\n    if (_.isFunction(emptyViewOptions)) {\n      return emptyViewOptions.call(this);\n    }\n\n    return emptyViewOptions;\n  },\n\n  // Sorts views by viewComparator and sets the children to the new order\n  _sortChildren() {\n    let viewComparator = this.getComparator();\n\n    if (!viewComparator) { return; }\n\n    // If children are sorted prevent added to end perf\n    delete this._addedViews;\n\n    this.triggerMethod('before:sort', this);\n\n    this.children._sort(viewComparator, this);\n\n    this.triggerMethod('sort', this);\n  },\n\n  // Sets the view's `viewComparator` and applies the sort if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setComparator(comparator, {preventRender} = {}) {\n    const comparatorChanged = this.viewComparator !== comparator;\n    const shouldSort = comparatorChanged && !preventRender;\n\n    this.viewComparator = comparator;\n\n    if (shouldSort) {\n      this.sort();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewComparator` and follows the same rules for rendering as `setComparator`.\n  removeComparator(options) {\n    return this.setComparator(null, options);\n  },\n\n  // If viewComparator is overriden it will be returned here.\n  // Additionally override this function to provide custom\n  // viewComparator logic\n  getComparator() {\n    if (this.viewComparator) { return this.viewComparator }\n\n    if (!this.sortWithCollection || this.viewComparator === false || !this.collection) {\n      return false;\n    }\n\n    return this._viewComparator;\n  },\n\n  // Default internal view comparator that order the views by\n  // the order of the collection\n  _viewComparator(view) {\n    return this.collection.indexOf(view.model);\n  },\n\n  // This method re-filters the children views and re-renders the results\n  filter() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    const filteredViews = this._filterChildren();\n\n    this._renderChildren(filteredViews);\n\n    return this;\n  },\n\n  _filterChildren() {\n    const viewFilter = this._getFilter();\n    const addedViews = this._addedViews;\n\n    delete this._addedViews;\n\n    if (!viewFilter) {\n      if (addedViews) { return addedViews; }\n\n      return this.children._views;\n    }\n\n    this.triggerMethod('before:filter', this);\n\n    const attachViews = [];\n    const detachViews = [];\n\n    _.each(this.children._views, (view, key, children) => {\n      (viewFilter.call(this, view, key, children) ? attachViews : detachViews).push(view);\n    });\n\n    this._detachChildren(detachViews);\n\n    this.triggerMethod('filter', this, attachViews, detachViews);\n\n    return attachViews;\n  },\n\n  // This method returns a function for the viewFilter\n  _getFilter() {\n    const viewFilter = this.getFilter();\n\n    if (!viewFilter) { return false; }\n\n    if (_.isFunction(viewFilter)) {\n      return viewFilter;\n    }\n\n    // Support filter predicates `{ fooFlag: true }`\n    if (_.isObject(viewFilter)) {\n      const matcher = _.matches(viewFilter);\n      return function(view) {\n        return matcher(view.model && view.model.attributes);\n      };\n    }\n\n    // Filter by model attribute\n    if (_.isString(viewFilter)) {\n      return function(view) {\n        return view.model && view.model.get(viewFilter);\n      };\n    }\n\n    throw new MarionetteError({\n      name: 'InvalidViewFilterError',\n      message: '\"viewFilter\" must be a function, predicate object literal, a string indicating a model attribute, or falsy'\n    });\n  },\n\n  // Override this function to provide custom\n  // viewFilter logic\n  getFilter() {\n    return this.viewFilter;\n  },\n\n  // Sets the view's `viewFilter` and applies the filter if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setFilter(filter, {preventRender} = {}) {\n    const filterChanged = this.viewFilter !== filter;\n    const shouldRender = filterChanged && !preventRender;\n\n    this.viewFilter = filter;\n\n    if (shouldRender) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewFilter` and follows the same rules for rendering as `setFilter`.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  _detachChildren(detachingViews) {\n    _.each(detachingViews, _.bind(this._detachChildView, this));\n  },\n\n  _detachChildView(view) {\n    const shouldTriggerDetach = view._isAttached && this.monitorViewEvents !== false;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    this.detachHtml(view);\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the collectionView detaches a child view\n  detachHtml(view) {\n    this.Dom.detachEl(view.el, view.$el);\n  },\n\n  _renderChildren(views) {\n    if (this.isEmpty(!views.length)) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._destroyEmptyView();\n\n    this.triggerMethod('before:render:children', this, views);\n\n    const els = this._getBuffer(views);\n\n    this._attachChildren(els, views);\n\n    this.triggerMethod('render:children', this, views);\n  },\n\n  _attachChildren(els, views) {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n\n    views = shouldTriggerAttach ? views : [];\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      triggerMethodOn(view, 'before:attach', view);\n    });\n\n    this.attachHtml(els);\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    });\n  },\n\n  // Renders each view in children and creates a fragment buffer from them\n  _getBuffer(views) {\n    const elBuffer = this.Dom.createBuffer();\n\n    _.each(views, view => {\n      renderView(view);\n      this.Dom.appendContents(elBuffer, view.el, {_$contents: view.$el});\n    });\n\n    return elBuffer;\n  },\n\n  // Override this method to do something other than `.append`.\n  // You can attach any HTML at this point including the els.\n  attachHtml(els) {\n    this.Dom.appendContents(this.el, els, {_$el: this.$el});\n  },\n\n  swapChildViews(view1, view2) {\n    if (!this.children.hasView(view1) || !this.children.hasView(view2)) {\n      throw new MarionetteError({\n        name: 'ChildSwapError',\n        message: 'Both views must be children of the collection view'\n      });\n    }\n\n    this.children._swap(view1, view2);\n    this.Dom.swapEl(view1.el, view2.el);\n\n    // If the views are not filtered the same, refilter\n    if (this.Dom.hasEl(this.el, view1.el) !== this.Dom.hasEl(this.el, view2.el)) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index, based on the current sort\n  addChildView(view, index) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    // Only cache views if added to the end\n    if (!index || index >= this.children.length) {\n      this._addedViews = [view];\n    }\n    this._addChild(view, index);\n    this._showChildren();\n\n    return view;\n  },\n\n  // Detach a view from the children.  Best used when adding a\n  // childView from `addChildView`\n  detachChildView(view) {\n    this.removeChildView(view, { shouldDetach: true });\n\n    return view;\n  },\n\n  // Remove the child view and destroy it.  Best used when adding a\n  // childView from `addChildView`\n  // The options argument is for internal use only\n  removeChildView(view, options) {\n    if (!view) {\n      return view;\n    }\n\n    this._removeChildView(view, options);\n\n    this._removeChild(view);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n\n    return view;\n  },\n\n  _removeChildViews(views) {\n    _.each(views, _.bind(this._removeChildView, this));\n  },\n\n  _removeChildView(view, {shouldDetach} = {}) {\n    view.off('destroy', this.removeChildView, this);\n\n    if (shouldDetach) {\n      this._detachChildView(view);\n    } else {\n      this._destroyChildView(view);\n    }\n\n    this.stopListening(view);\n  },\n\n  _destroyChildView(view) {\n    if (view._isDestroyed) {\n      return;\n    }\n\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n    const emptyRegion = this.getEmptyRegion();\n    emptyRegion.destroy();\n    delete this._addedViews;\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren() {\n    if (!this.children || !this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    if (this.monitorViewEvents === false) {\n      this.Dom.detachContents(this.el, this.$el);\n    }\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.triggerMethod('destroy:children', this);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","// Composite View\n// --------------\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport MarionetteError from './error';\nimport CollectionView from './collection-view';\nimport View from './view';\n\nconst ClassOptions = [\n  'childViewContainer',\n  'template',\n  'templateContext'\n];\n\n// Used for rendering a branch-leaf, hierarchical structure.\n// Extends directly from CollectionView\n// @deprecated\nconst CompositeView = CollectionView.extend({\n\n  // Setting up the inheritance chain which allows changes to\n  // Marionette.CollectionView.prototype.constructor which allows overriding\n  // option to pass '{sort: false}' to prevent the CompositeView from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  constructor(options) {\n    deprecate('CompositeView is deprecated. Convert to View at your earliest convenience');\n\n    this.mergeOptions(options, ClassOptions);\n\n    CollectionView.prototype.constructor.apply(this, arguments);\n  },\n\n  // Configured the initial events that the composite view\n  // binds to. Override this method to prevent the initial\n  // events, or to add your own initial events.\n  _initialEvents() {\n\n    // Bind only after composite view is rendered to avoid adding child views\n    // to nonexistent childViewContainer\n\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.renderChildren);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Retrieve the `childView` to be used when rendering each of\n  // the items in the collection. The default is to return\n  // `this.childView` or Marionette.CompositeView if no `childView`\n  // has been defined. As happens in CollectionView, `childView` can\n  // be a function (which should return a view class).\n  _getChildView(child) {\n    let childView = this.childView;\n\n    // for CompositeView, if `childView` is not specified, we'll get the same\n    // composite view class rendered for each child in the collection\n    // then check if the `childView` is a view class (the common case)\n    // finally check if it's a function (which we assume that returns a view class)\n    if (!childView) {\n      return this.constructor;\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // Return the serialized model\n  serializeData() {\n    return this.serializeModel();\n  },\n\n  // Renders the model and the collection.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this._isRendering = true;\n    this.resetChildViewContainer();\n\n    this.triggerMethod('before:render', this);\n\n    this._renderTemplate();\n    this.bindUIElements();\n    this.renderChildren();\n\n    this._isRendering = false;\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  renderChildren() {\n    if (this._isRendered || this._isRendering) {\n      CollectionView.prototype._renderChildren.call(this);\n    }\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(compositeView, buffer) {\n    const $container = this.getChildViewContainer(compositeView);\n    this.Dom.appendContents($container[0], buffer, {_$el: $container});\n  },\n\n  // Internal method. Append a view to the end of the $el.\n  // Overidden from CollectionView to ensure view is appended to\n  // childViewContainer\n  _insertAfter(childView) {\n    const $container = this.getChildViewContainer(this, childView);\n    this.Dom.appendContents($container[0], childView.el, {_$el: $container, _$contents: childView.$el});\n  },\n\n  // Internal method. Append reordered childView'.\n  // Overidden from CollectionView to ensure reordered views\n  // are appended to childViewContainer\n  _appendReorderedChildren(children) {\n    const $container = this.getChildViewContainer(this);\n    this.Dom.appendContents($container[0], children, {_$el: $container});\n  },\n\n  // Internal method to ensure an `$childViewContainer` exists, for the\n  // `attachHtml` method to use.\n  getChildViewContainer(containerView, childView) {\n    if (!!containerView.$childViewContainer) {\n      return containerView.$childViewContainer;\n    }\n\n    let container;\n    const childViewContainer = containerView.childViewContainer;\n    if (childViewContainer) {\n\n      const selector = _.result(containerView, 'childViewContainer');\n\n      if (selector.charAt(0) === '@' && containerView.ui) {\n        container = containerView.ui[selector.substr(4)];\n      } else {\n        container = this.$(selector);\n      }\n\n      if (container.length <= 0) {\n        throw new MarionetteError({\n          name: 'ChildViewContainerMissingError',\n          message: `The specified \"childViewContainer\" was not found: ${containerView.childViewContainer}`\n        });\n      }\n\n    } else {\n      container = containerView.$el;\n    }\n\n    containerView.$childViewContainer = container;\n    return container;\n  },\n\n  // Internal method to reset the `$childViewContainer` on render\n  resetChildViewContainer() {\n    if (this.$childViewContainer) {\n      this.$childViewContainer = undefined;\n    }\n  }\n});\n\n// To prevent duplication but allow the best View organization\n// Certain View methods are mixed directly into the deprecated CompositeView\nconst MixinFromView = _.pick(View.prototype, 'serializeModel', 'getTemplate', '_renderTemplate', '_renderHtml', 'mixinTemplateContext', 'attachElContent');\n_.extend(CompositeView.prototype, MixinFromView);\n\nexport default CompositeView;\n","// Behavior\n// --------\n\n// A Behavior is an isolated set of DOM /\n// user interactions that can be mixed into any View.\n// Behaviors allow you to blackbox View specific interactions\n// into portable logical chunks, keeping your views simple and your code DRY.\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport getNamespacedEventName from './utils/get-namespaced-event-name';\nimport MarionetteObject from './object';\nimport DelegateEntityEventsMixin from './mixins/delegate-entity-events';\nimport TriggersMixin from './mixins/triggers';\nimport UIMixin from './mixins/ui';\n\nconst ClassOptions = [\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'triggers',\n  'ui'\n];\n\nconst Behavior = MarionetteObject.extend({\n  cidPrefix: 'mnb',\n\n  constructor(options, view) {\n    // Setup reference to the view.\n    // this comes in handle when a behavior\n    // wants to directly talk up the chain\n    // to the view.\n    this.view = view;\n\n    if (this.defaults) {\n      deprecate('Behavior defaults are deprecated. For similar functionality set options on the Behavior class.');\n    }\n\n    this.defaults = _.clone(_.result(this, 'defaults', {}));\n\n    this._setOptions(_.extend({}, this.defaults, options));\n    this.mergeOptions(this.options, ClassOptions);\n\n    // Construct an internal UI hash using\n    // the behaviors UI hash and then the view UI hash.\n    // This allows the user to use UI hash elements\n    // defined in the parent view as well as those\n    // defined in the given behavior.\n    // This order will help the reuse and share of a behavior\n    // between multiple views, while letting a view override a\n    // selector under an UI key.\n    this.ui = _.extend({}, _.result(this, 'ui'), _.result(view, 'ui'));\n\n    MarionetteObject.apply(this, arguments);\n  },\n\n  // proxy behavior $ method to the view\n  // this is useful for doing jquery DOM lookups\n  // scoped to behaviors view.\n  $() {\n    return this.view.$.apply(this.view, arguments);\n  },\n\n  // Stops the behavior from listening to events.\n  // Overrides Object#destroy to prevent additional events from being triggered.\n  destroy() {\n    this.stopListening();\n\n    this.view._removeBehavior(this);\n\n    return this;\n  },\n\n  proxyViewProperties() {\n    this.$el = this.view.$el;\n    this.el = this.view.el;\n\n    return this;\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n\n    return this;\n  },\n\n  unbindUIElements() {\n    this._unbindUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  getEvents() {\n    // Normalize behavior events hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorEvents = this.normalizeUIKeys(_.result(this, 'events'));\n\n    // binds the handler to the behavior and builds a unique eventName\n    return _.reduce(behaviorEvents, (events, behaviorHandler, key) => {\n      if (!_.isFunction(behaviorHandler)) {\n        behaviorHandler = this[behaviorHandler];\n      }\n      if (!behaviorHandler) { return events; }\n      key = getNamespacedEventName(key, this.cid);\n      events[key] = _.bind(behaviorHandler, this);\n      return events;\n    }, {});\n  },\n\n  // Internal method to build all trigger handlers for a given behavior\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Normalize behavior triggers hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorTriggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    return this._getViewTriggers(this.view, behaviorTriggers);\n  }\n\n});\n\n_.extend(Behavior.prototype, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default Behavior;\n","// Application\n// -----------\nimport buildRegion from './common/build-region';\nimport MarionetteObject from './object';\nimport Region from './region';\n\nconst ClassOptions = [\n  'region',\n  'regionClass'\n];\n\n// A container for a Marionette application.\nconst Application = MarionetteObject.extend({\n  cidPrefix: 'mna',\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    this._initRegion();\n\n    MarionetteObject.prototype.constructor.apply(this, arguments);\n  },\n\n  regionClass: Region,\n\n  _initRegion() {\n    const region = this.region;\n\n    if (!region) { return; }\n\n    const defaults = {\n      regionClass: this.regionClass\n    };\n\n    this._region = buildRegion(region, defaults);\n  },\n\n  getRegion() {\n    return this._region;\n  },\n\n  showView(view, ...args) {\n    const region = this.getRegion();\n    return region.show(view, ...args);\n  },\n\n  getView() {\n    return this.getRegion().currentView;\n  },\n\n  // kick off all of the application's processes.\n  start(options) {\n    this.triggerMethod('before:start', this, options);\n    this.triggerMethod('start', this, options);\n    return this;\n  }\n\n});\n\nexport default Application;\n","// App Router\n// ----------\n\n// Reduce the boilerplate code of handling route events\n// and then calling a single method on another object,\n// called a controller.\n// Have your routers configured to call the method on\n// your controller, directly.\n//\n// Configure an AppRouter with `appRoutes`.\n//\n// App routers can only take one `controller` object.\n// It is recommended that you divide your controller\n// objects in to smaller pieces of related functionality\n// and have multiple routers / controllers, instead of\n// just one giant router and controller.\n//\n// You can also add standard routes to an AppRouter.\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from './common/trigger-method';\nimport MarionetteError from './error';\nimport CommonMixin from './mixins/common';\n\nconst ClassOptions = [\n  'appRoutes',\n  'controller'\n];\n\nconst AppRouter = Backbone.Router.extend({\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    Backbone.Router.apply(this, arguments);\n\n    const appRoutes = this.appRoutes;\n    const controller = this._getController();\n    this.processAppRoutes(controller, appRoutes);\n    this.on('route', this._processOnRoute, this);\n  },\n\n  // Similar to route method on a Backbone Router but\n  // method is called on the controller\n  appRoute(route, methodName) {\n    const controller = this._getController();\n    this._addAppRoute(controller, route, methodName);\n    return this;\n  },\n\n  // process the route event and trigger the onRoute\n  // method call, if it exists\n  _processOnRoute(routeName, routeArgs) {\n    // make sure an onRoute before trying to call it\n    if (_.isFunction(this.onRoute)) {\n      // find the path that matches the current route\n      const routePath = _.invert(this.appRoutes)[routeName];\n      this.onRoute(routeName, routePath, routeArgs);\n    }\n  },\n\n  // Internal method to process the `appRoutes` for the\n  // router, and turn them in to routes that trigger the\n  // specified method on the specified `controller`.\n  processAppRoutes(controller, appRoutes) {\n    if (!appRoutes) { return this; }\n\n    const routeNames = _.keys(appRoutes).reverse(); // Backbone requires reverted order of routes\n\n    _.each(routeNames, route => {\n      this._addAppRoute(controller, route, appRoutes[route]);\n    });\n\n    return this;\n  },\n\n  _getController() {\n    return this.controller;\n  },\n\n  _addAppRoute(controller, route, methodName) {\n    const method = controller[methodName];\n\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was not found on the controller`);\n    }\n\n    this.route(route, methodName, _.bind(method, controller));\n  },\n\n  triggerMethod: triggerMethod\n});\n\n_.extend(AppRouter.prototype, CommonMixin);\n\nexport default AppRouter;\n","import MarionetteError from '../error';\n\n// Placeholder method to be extended by the user.\n// The method should define the object that stores the behaviors.\n// i.e.\n//\n// ```js\n// Marionette.Behaviors.behaviorsLookup: function() {\n//   return App.Behaviors\n// }\n// ```\nexport default function behaviorsLookup() {\n  throw new MarionetteError({\n    message: 'You must define where your behaviors are stored.',\n    url: 'marionette.behaviors.md#behaviorslookup'\n  });\n}\n","import Backbone from 'backbone';\nimport {version} from '../package.json';\n\nimport proxy from './utils/proxy';\nimport extend from './utils/extend';\nimport deprecate from './utils/deprecate';\n\nimport isNodeAttached from './common/is-node-attached';\nimport mergeOptions from './common/merge-options';\nimport getOption from './common/get-option';\nimport normalizeMethods from './common/normalize-methods';\nimport monitorViewEvents from './common/monitor-view-events';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from './common/bind-events';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from './common/bind-requests';\n\nimport {\n  triggerMethod,\n  triggerMethodOn\n} from './common/trigger-method';\n\n\nimport MarionetteObject from './object';\nimport TemplateCache from './template-cache';\nimport View from './view';\nimport CollectionView from './collection-view';\nimport NextCollectionView from './next-collection-view';\nimport CompositeView from './composite-view';\nimport Behavior from './behavior';\nimport Region from './region';\nimport Application from './application';\nimport AppRouter from './app-router';\nimport MarionetteError from './error';\n\nimport behaviorsLookup from './config/behaviors-lookup';\nimport DomApi from './config/dom';\nimport Renderer from './config/renderer';\n\nimport {\n  FEATURES,\n  isEnabled,\n  setEnabled\n} from './config/features';\n\nconst previousMarionette = Backbone.Marionette;\nconst Marionette = Backbone.Marionette = {};\n\n// This allows you to run multiple instances of Marionette on the same\n// webapp. After loading the new version, call `noConflict()` to\n// get a reference to it. At the same time the old version will be\n// returned to Backbone.Marionette.\nMarionette.noConflict = function() {\n  Backbone.Marionette = previousMarionette;\n  return this;\n};\n\n// Utilities\nMarionette.bindEvents = proxy(bindEvents);\nMarionette.unbindEvents = proxy(unbindEvents);\nMarionette.bindRequests = proxy(bindRequests);\nMarionette.unbindRequests = proxy(unbindRequests);\nMarionette.mergeOptions = proxy(mergeOptions);\nMarionette.getOption = proxy(getOption);\nMarionette.normalizeMethods = proxy(normalizeMethods);\nMarionette.extend = extend;\nMarionette.isNodeAttached = isNodeAttached;\nMarionette.deprecate = deprecate;\nMarionette.triggerMethod = proxy(triggerMethod);\nMarionette.triggerMethodOn = triggerMethodOn;\nMarionette.isEnabled = isEnabled;\nMarionette.setEnabled = setEnabled;\nMarionette.monitorViewEvents = monitorViewEvents;\n\nMarionette.Behaviors = {};\nMarionette.Behaviors.behaviorsLookup = behaviorsLookup;\n\n// Classes\nMarionette.Application = Application;\nMarionette.AppRouter = AppRouter;\nMarionette.Renderer = Renderer;\nMarionette.TemplateCache = TemplateCache;\nMarionette.View = View;\nMarionette.CollectionView = CollectionView;\nMarionette.NextCollectionView = NextCollectionView;\nMarionette.CompositeView = CompositeView;\nMarionette.Behavior = Behavior;\nMarionette.Region = Region;\nMarionette.Error = MarionetteError;\nMarionette.Object = MarionetteObject;\n\n// Configuration\nMarionette.DEV_MODE = false;\nMarionette.FEATURES = FEATURES;\nMarionette.VERSION = version;\nMarionette.DomApi = DomApi;\nMarionette.setDomApi = function(mixin) {\n  CollectionView.setDomApi(mixin);\n  CompositeView.setDomApi(mixin);\n  NextCollectionView.setDomApi(mixin);\n  Region.setDomApi(mixin);\n  View.setDomApi(mixin);\n};\n\nexport default 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+{"version":3,"file":"backbone.marionette.esm.js","sources":["src/utils/proxy.js","src/utils/extend.js","src/utils/deprecate.js","src/common/is-node-attached.js","src/common/merge-options.js","src/common/get-option.js","src/common/normalize-methods.js","src/common/trigger-method.js","src/common/monitor-view-events.js","src/error.js","src/common/bind-events.js","src/common/bind-requests.js","src/utils/set-options.js","src/mixins/common.js","src/mixins/radio.js","src/object.js","src/template-cache.js","src/utils/invoke.js","src/mixins/behaviors.js","src/mixins/delegate-entity-events.js","src/utils/get-namespaced-event-name.js","src/config/features.js","src/mixins/triggers.js","src/mixins/ui.js","src/config/dom.js","src/mixins/view.js","src/common/view.js","src/region.js","src/common/build-region.js","src/mixins/regions.js","src/config/renderer.js","src/view.js","src/utils/emulate-collection.js","src/child-view-container.js","src/collection-view.js","src/next-child-view-container.js","src/next-collection-view.js","src/composite-view.js","src/behavior.js","src/application.js","src/app-router.js","src/config/behaviors-lookup.js","src/backbone.marionette.js"],"sourcesContent":["//Internal utility for creating context style global utils\nconst proxy = function(method) {\n  return function(context, ...args) {\n    return method.apply(context, args);\n  };\n};\n\nexport default proxy;\n","// Marionette.extend\n// -----------------\n\nimport Backbone from 'backbone';\n\n// Borrow the Backbone `extend` method so we can use it as needed\nconst extend = Backbone.Model.extend;\n\nexport default extend;\n","/* global console */\n\nimport _ from 'underscore';\n\nimport Marionette from '../backbone.marionette';\n\nconst deprecate = function(message, test) {\n  if (_.isObject(message)) {\n    message = (\n      message.prev + ' is going to be removed in the future. ' +\n      'Please use ' + message.next + ' instead.' +\n      (message.url ? ' See: ' + message.url : '')\n    );\n  }\n\n  if (!Marionette.DEV_MODE) {\n    return;\n  }\n\n  if ((test === undefined || !test) && !deprecate._cache[message]) {\n    deprecate._warn('Deprecation warning: ' + message);\n    deprecate._cache[message] = true;\n  }\n};\n\n/* istanbul ignore next: can't clear console */\ndeprecate._console = typeof console !== 'undefined' ? console : {};\ndeprecate._warn = function() {\n  const warn = deprecate._console.warn || deprecate._console.log || _.noop;\n  return warn.apply(deprecate._console, arguments);\n};\ndeprecate._cache = {};\n\nexport default deprecate;\n","// Marionette.isNodeAttached\n// -------------------------\n\n// Determine if `el` is a child of the document\nconst isNodeAttached = function(el) {\n  return document.documentElement.contains(el && el.parentNode);\n};\n\nexport default isNodeAttached;\n","import _ from 'underscore';\n\n// Merge `keys` from `options` onto `this`\nconst mergeOptions = function(options, keys) {\n  if (!options) { return; }\n\n  _.each(keys, (key) => {\n    const option = options[key];\n    if (option !== undefined) {\n      this[key] = option;\n    }\n  });\n};\n\nexport default mergeOptions;\n","// Marionette.getOption\n// --------------------\n\n// Retrieve an object, function or other value from the\n// object or its `options`, with `options` taking precedence.\nconst getOption = function(optionName) {\n  if (!optionName) { return; }\n  if (this.options && (this.options[optionName] !== undefined)) {\n    return this.options[optionName];\n  } else {\n    return this[optionName];\n  }\n};\n\nexport default getOption;\n","import _ from 'underscore';\n\n// Marionette.normalizeMethods\n// ----------------------\n\n// Pass in a mapping of events => functions or function names\n// and return a mapping of events => functions\nconst normalizeMethods = function(hash) {\n  return _.reduce(hash, (normalizedHash, method, name) => {\n    if (!_.isFunction(method)) {\n      method = this[method];\n    }\n    if (method) {\n      normalizedHash[name] = method;\n    }\n    return normalizedHash;\n  }, {});\n};\n\nexport default normalizeMethods;\n","// Trigger Method\n// --------------\n\nimport _ from 'underscore';\nimport getOption from './get-option';\n\n// split the event name on the \":\"\nconst splitter = /(^|:)(\\w)/gi;\n\n// take the event section (\"section1:section2:section3\")\n// and turn it in to uppercase name onSection1Section2Section3\nfunction getEventName(match, prefix, eventName) {\n  return eventName.toUpperCase();\n}\n\nconst getOnMethodName = _.memoize(function(event) {\n  return 'on' + event.replace(splitter, getEventName);\n});\n\n// Trigger an event and/or a corresponding method name. Examples:\n//\n// `this.triggerMethod(\"foo\")` will trigger the \"foo\" event and\n// call the \"onFoo\" method.\n//\n// `this.triggerMethod(\"foo:bar\")` will trigger the \"foo:bar\" event and\n// call the \"onFooBar\" method.\nexport function triggerMethod(event, ...args) {\n  // get the method name from the event name\n  const methodName = getOnMethodName(event);\n  const method = getOption.call(this, methodName);\n  let result;\n\n  // call the onMethodName if it exists\n  if (_.isFunction(method)) {\n    // pass all args, except the event name\n    result = method.apply(this, args);\n  }\n\n  // trigger the event\n  this.trigger.apply(this, arguments);\n\n  return result;\n}\n\n// triggerMethodOn invokes triggerMethod on a specific context\n//\n// e.g. `Marionette.triggerMethodOn(view, 'show')`\n// will trigger a \"show\" event or invoke onShow the view.\nexport function triggerMethodOn(context, ...args) {\n  if (_.isFunction(context.triggerMethod)) {\n    return context.triggerMethod.apply(context, args);\n  }\n\n  return triggerMethod.apply(context, args);\n}\n","// DOM Refresh\n// -----------\n\nimport _ from 'underscore';\nimport { triggerMethodOn } from './trigger-method';\n\n// Trigger method on children unless a pure Backbone.View\nfunction triggerMethodChildren(view, event, shouldTrigger) {\n  if (!view._getImmediateChildren) { return; }\n  _.each(view._getImmediateChildren(), child => {\n    if (!shouldTrigger(child)) { return; }\n    triggerMethodOn(child, event, child);\n  });\n}\n\nfunction shouldTriggerAttach(view) {\n  return !view._isAttached;\n}\n\nfunction shouldAttach(view) {\n  if (!shouldTriggerAttach(view)) { return false; }\n  view._isAttached = true;\n  return true;\n}\n\nfunction shouldTriggerDetach(view) {\n  return view._isAttached;\n}\n\nfunction shouldDetach(view) {\n  if (!shouldTriggerDetach(view)) { return false; }\n  view._isAttached = false;\n  return true;\n}\n\nfunction triggerDOMRefresh(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:refresh', view);\n  }\n}\n\nfunction triggerDOMRemove(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:remove', view);\n  }\n}\n\nfunction handleBeforeAttach() {\n  triggerMethodChildren(this, 'before:attach', shouldTriggerAttach);\n}\n\nfunction handleAttach() {\n  triggerMethodChildren(this, 'attach', shouldAttach);\n  triggerDOMRefresh(this);\n}\n\nfunction handleBeforeDetach() {\n  triggerMethodChildren(this, 'before:detach', shouldTriggerDetach);\n  triggerDOMRemove(this);\n}\n\nfunction handleDetach() {\n  triggerMethodChildren(this, 'detach', shouldDetach);\n}\n\nfunction handleBeforeRender() {\n  triggerDOMRemove(this);\n}\n\nfunction handleRender() {\n  triggerDOMRefresh(this);\n}\n\n// Monitor a view's state, propagating attach/detach events to children and firing dom:refresh\n// whenever a rendered view is attached or an attached view is rendered.\nfunction monitorViewEvents(view) {\n  if (view._areViewEventsMonitored || view.monitorViewEvents === false) { return; }\n\n  view._areViewEventsMonitored = true;\n\n  view.on({\n    'before:attach': handleBeforeAttach,\n    'attach': handleAttach,\n    'before:detach': handleBeforeDetach,\n    'detach': handleDetach,\n    'before:render': handleBeforeRender,\n    'render': handleRender\n  });\n}\n\nexport default monitorViewEvents;\n","// Error\n// -----\n\nimport _ from 'underscore';\nimport extend from './utils/extend';\nimport {version} from '../package.json';\n\nconst errorProps = ['description', 'fileName', 'lineNumber', 'name', 'message', 'number'];\n\nconst MarionetteError = extend.call(Error, {\n  urlRoot: `http://marionettejs.com/docs/v${version}/`,\n\n  constructor(message, options) {\n    if (_.isObject(message)) {\n      options = message;\n      message = options.message;\n    } else if (!options) {\n      options = {};\n    }\n\n    const error = Error.call(this, message);\n    _.extend(this, _.pick(error, errorProps), _.pick(options, errorProps));\n\n    this.captureStackTrace();\n\n    if (options.url) {\n      this.url = this.urlRoot + options.url;\n    }\n  },\n\n  captureStackTrace() {\n    if (Error.captureStackTrace) {\n      Error.captureStackTrace(this, MarionetteError);\n    }\n  },\n\n  toString() {\n    return this.name + ': ' + this.message + (this.url ? ' See: ' + this.url : '');\n  }\n});\n\nMarionetteError.extend = extend;\n\nexport default MarionetteError;\n","// Bind Entity Events & Unbind Entity Events\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone \"entity\" (e.g. collection/model)\n// to methods on a target object.\n//\n// The first parameter, `target`, must have the Backbone.Events module mixed in.\n//\n// The second parameter is the `entity` (Backbone.Model, Backbone.Collection or\n// any object that has Backbone.Events mixed in) to bind the events from.\n//\n// The third parameter is a hash of { \"event:name\": \"eventHandler\" }\n// configuration. Multiple handlers can be separated by a space. A\n// function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\n\n// Bind/unbind the event to handlers specified as a string of\n// handler names on the target object\nfunction bindFromStrings(target, entity, evt, methods, actionName) {\n  const methodNames = methods.split(/\\s+/);\n\n  if (methodNames.length > 1) {\n    deprecate('Multiple handlers for a single event are deprecated. If needed, use a single handler to call multiple methods.')\n  }\n\n  _.each(methodNames, function(methodName) {\n    const method = target[methodName];\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was configured as an event handler, but does not exist.`);\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\n// generic looping function\nfunction iterateEvents(target, entity, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindevents'\n    });\n  }\n\n  // iterate the bindings and bind/unbind them\n  _.each(bindings, function(method, evt) {\n\n    // allow for a list of method names as a string\n    if (_.isString(method)) {\n      bindFromStrings(target, entity, evt, method, actionName);\n      return;\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\nfunction bindEvents(entity, bindings) {\n  if (!entity || !bindings) { return this; }\n\n  iterateEvents(this, entity, bindings, 'listenTo');\n  return this;\n}\n\nfunction unbindEvents(entity, bindings) {\n  if (!entity) { return this; }\n\n  if (!bindings) {\n    this.stopListening(entity);\n    return this;\n  }\n\n  iterateEvents(this, entity, bindings, 'stopListening');\n  return this;\n}\n\n// Export Public API\nexport {\n  bindEvents,\n  unbindEvents\n};\n","// Bind/Unbind Radio Requests\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone.radio request\n// to methods on a target object.\n//\n// The first parameter, `target`, will set the context of the reply method\n//\n// The second parameter is the `Radio.channel` to bind the reply to.\n//\n// The third parameter is a hash of { \"request:name\": \"replyHandler\" }\n// configuration. A function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport normalizeMethods from './normalize-methods';\nimport MarionetteError from '../error';\n\nfunction iterateReplies(target, channel, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindrequests'\n    });\n  }\n\n  const normalizedRadioRequests = normalizeMethods.call(target, bindings);\n\n  channel[actionName](normalizedRadioRequests, target);\n}\n\nfunction bindRequests(channel, bindings) {\n  if (!channel || !bindings) { return this; }\n\n  iterateReplies(this, channel, bindings, 'reply');\n  return this;\n}\n\nfunction unbindRequests(channel, bindings) {\n  if (!channel) { return this; }\n\n  if (!bindings) {\n    channel.stopReplying(null, null, this);\n    return this;\n  }\n\n  iterateReplies(this, channel, bindings, 'stopReplying');\n  return this;\n}\n\nexport {\n  bindRequests,\n  unbindRequests\n};\n","import _ from 'underscore';\n\n// Internal utility for setting options consistently across Mn\nconst setOptions = function(options) {\n  this.options = _.extend({}, _.result(this, 'options'), options);\n};\n\nexport default setOptions;\n","import _setOptions from '../utils/set-options';\nimport getOption from '../common/get-option';\nimport mergeOptions from '../common/merge-options';\nimport normalizeMethods from '../common/normalize-methods';\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nexport default {\n\n  // Imports the \"normalizeMethods\" to transform hashes of\n  // events=>function references/names to a hash of events=>function references\n  normalizeMethods,\n\n  _setOptions,\n\n  // A handy way to merge passed-in options onto the instance\n  mergeOptions,\n\n  // Enable getting options from this or this.options by name.\n  getOption,\n\n  // Enable binding view's events from another entity.\n  bindEvents,\n\n  // Enable unbinding view's events from another entity.\n  unbindEvents\n};\n","import _ from 'underscore';\nimport Radio from 'backbone.radio';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from '../common/bind-requests';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nimport MarionetteError from '../error';\n\n// MixinOptions\n// - channelName\n// - radioEvents\n// - radioRequests\n\nexport default {\n\n  _initRadio() {\n    const channelName = _.result(this, 'channelName');\n\n    if (!channelName) {\n      return;\n    }\n\n    /* istanbul ignore next */\n    if (!Radio) {\n      throw new MarionetteError({\n        name: 'BackboneRadioMissing',\n        message: 'The dependency \"backbone.radio\" is missing.'\n      });\n    }\n\n    const channel = this._channel = Radio.channel(channelName);\n\n    const radioEvents = _.result(this, 'radioEvents');\n    this.bindEvents(channel, radioEvents);\n\n    const radioRequests = _.result(this, 'radioRequests');\n    this.bindRequests(channel, radioRequests);\n\n    this.on('destroy', this._destroyRadio);\n  },\n\n  _destroyRadio() {\n    this._channel.stopReplying(null, null, this);\n  },\n\n  getChannel() {\n    return this._channel;\n  },\n\n  // Proxy `bindEvents`\n  bindEvents: bindEvents,\n\n  // Proxy `unbindEvents`\n  unbindEvents: unbindEvents,\n\n  // Proxy `bindRequests`\n  bindRequests: bindRequests,\n\n  // Proxy `unbindRequests`\n  unbindRequests: unbindRequests\n\n};\n","// Object\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport extend from './utils/extend';\nimport { triggerMethod } from './common/trigger-method';\nimport CommonMixin from './mixins/common';\nimport RadioMixin from './mixins/radio';\n\nconst ClassOptions = [\n  'channelName',\n  'radioEvents',\n  'radioRequests'\n];\n\n// A Base Class that other Classes should descend from.\n// Object borrows many conventions and utilities from Backbone.\nconst MarionetteObject = function(options) {\n  if (!this.hasOwnProperty('options')) {\n    this._setOptions(options);\n  }\n  this.mergeOptions(options, ClassOptions);\n  this._setCid();\n  this._initRadio();\n  this.initialize.apply(this, arguments);\n};\n\nMarionetteObject.extend = extend;\n\n// Object Methods\n// --------------\n\n// Ensure it can trigger events with Backbone.Events\n_.extend(MarionetteObject.prototype, Backbone.Events, CommonMixin, RadioMixin, {\n  cidPrefix: 'mno',\n\n  // for parity with Marionette.AbstractView lifecyle\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return this._isDestroyed;\n  },\n\n  //this is a noop method intended to be overridden by classes that extend from this base\n  initialize() {},\n\n  _setCid() {\n    if (this.cid) { return; }\n    this.cid = _.uniqueId(this.cidPrefix);\n  },\n\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:destroy', this, ...args);\n\n    this._isDestroyed = true;\n    this.triggerMethod('destroy', this, ...args);\n    this.stopListening();\n\n    return this;\n  },\n\n  triggerMethod\n});\n\nexport default MarionetteObject;\n","// Template Cache\n// --------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport MarionetteError from './error';\n\n// Manage templates stored in `<script>` blocks,\n// caching them for faster access.\nconst TemplateCache = function(templateId) {\n  this.templateId = templateId;\n};\n\n// TemplateCache object-level methods. Manage the template\n// caches from these method calls instead of creating\n// your own TemplateCache instances\n_.extend(TemplateCache, {\n\n  templateCaches: {},\n\n  // Get the specified template by id. Either\n  // retrieves the cached version, or loads it\n  // from the DOM.\n  get(templateId, options) {\n    let cachedTemplate = this.templateCaches[templateId];\n\n    if (!cachedTemplate) {\n      cachedTemplate = new TemplateCache(templateId);\n      this.templateCaches[templateId] = cachedTemplate;\n    }\n\n    return cachedTemplate.load(options);\n  },\n\n  // Clear templates from the cache. If no arguments\n  // are specified, clears all templates:\n  // `clear()`\n  //\n  // If arguments are specified, clears each of the\n  // specified templates from the cache:\n  // `clear(\"#t1\", \"#t2\", \"...\")`\n  clear(...args) {\n    let i;\n    const length = args.length;\n\n    if (length > 0) {\n      for (i = 0; i < length; i++) {\n        delete this.templateCaches[args[i]];\n      }\n    } else {\n      this.templateCaches = {};\n    }\n  }\n});\n\n// TemplateCache instance methods, allowing each\n// template cache object to manage its own state\n// and know whether or not it has been loaded\n_.extend(TemplateCache.prototype, {\n\n  // Internal method to load the template\n  load(options) {\n    // Guard clause to prevent loading this template more than once\n    if (this.compiledTemplate) {\n      return this.compiledTemplate;\n    }\n\n    // Load the template and compile it\n    const template = this.loadTemplate(this.templateId, options);\n    this.compiledTemplate = this.compileTemplate(template, options);\n\n    return this.compiledTemplate;\n  },\n\n  // Load a template from the DOM, by default. Override\n  // this method to provide your own template retrieval\n  // For asynchronous loading with AMD/RequireJS, consider\n  // using a template-loader plugin as described here:\n  // https://github.com/marionettejs/backbone.marionette/wiki/Using-marionette-with-requirejs\n  loadTemplate(templateId, options) {\n    const $template = Backbone.$(templateId);\n\n    if (!$template.length) {\n      throw new MarionetteError({\n        name: 'NoTemplateError',\n        message: `Could not find template: \"${templateId}\"`\n      });\n    }\n    return $template.html();\n  },\n\n  // Pre-compile the template before caching it. Override\n  // this method if you do not need to pre-compile a template\n  // (JST / RequireJS for example) or if you want to change\n  // the template engine used (Handebars, etc).\n  compileTemplate(rawTemplate, options) {\n    return _.template(rawTemplate, options);\n  }\n});\n\nexport default TemplateCache;\n","// Implementation of the invoke method (http://underscorejs.org/#invoke) with support for\n// lodash v3, v4, and underscore.js\nimport _ from 'underscore';\n\nexport default _.invokeMap || _.invoke;\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport { triggerMethod } from '../common/trigger-method';\nimport Marionette from '../backbone.marionette';\n\n// MixinOptions\n// - behaviors\n\n// Takes care of getting the behavior class\n// given options and a key.\n// If a user passes in options.behaviorClass\n// default to using that.\n// If a user passes in a Behavior Class directly, use that\n// Otherwise delegate the lookup to the users `behaviorsLookup` implementation.\nfunction getBehaviorClass(options, key) {\n  if (options.behaviorClass) {\n    return options.behaviorClass;\n    //treat functions as a Behavior constructor\n  } else if (_.isFunction(options)) {\n    return options;\n  }\n\n  // behaviorsLookup can be either a flat object or a method\n  if (_.isFunction(Marionette.Behaviors.behaviorsLookup)) {\n    return Marionette.Behaviors.behaviorsLookup(options, key)[key];\n  }\n\n  return Marionette.Behaviors.behaviorsLookup[key];\n}\n\n// Iterate over the behaviors object, for each behavior\n// instantiate it and get its grouped behaviors.\n// This accepts a list of behaviors in either an object or array form\nfunction parseBehaviors(view, behaviors) {\n  return _.chain(behaviors).map(function(options, key) {\n    const BehaviorClass = getBehaviorClass(options, key);\n    //if we're passed a class directly instead of an object\n    const _options = options === BehaviorClass ? {} : options;\n    const behavior = new BehaviorClass(_options, view);\n    const nestedBehaviors = parseBehaviors(view, _.result(behavior, 'behaviors'));\n\n    return [behavior].concat(nestedBehaviors);\n  }).flatten().value();\n}\n\nexport default {\n  _initBehaviors() {\n    this._behaviors = this._getBehaviors();\n  },\n\n  _getBehaviors() {\n    const behaviors = _.result(this, 'behaviors');\n\n    // Behaviors defined on a view can be a flat object literal\n    // or it can be a function that returns an object.\n    return _.isObject(behaviors) ? parseBehaviors(this, behaviors) : {};\n  },\n\n  _getBehaviorTriggers() {\n    const triggers = _invoke(this._behaviors, 'getTriggers');\n    return _.reduce(triggers, function(memo, _triggers) {\n      return _.extend(memo, _triggers);\n    }, {});\n  },\n\n  _getBehaviorEvents() {\n    const events = _invoke(this._behaviors, 'getEvents');\n    return _.reduce(events, function(memo, _events) {\n      return _.extend(memo, _events);\n    }, {});\n  },\n\n  // proxy behavior $el to the view's $el.\n  _proxyBehaviorViewProperties() {\n    _invoke(this._behaviors, 'proxyViewProperties');\n  },\n\n  // delegate modelEvents and collectionEvents\n  _delegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'delegateEntityEvents');\n  },\n\n  // undelegate modelEvents and collectionEvents\n  _undelegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'undelegateEntityEvents');\n  },\n\n  _destroyBehaviors(...args) {\n    // Call destroy on each behavior after\n    // destroying the view.\n    // This unbinds event listeners\n    // that behaviors have registered for.\n    _invoke(this._behaviors, 'destroy', ...args);\n  },\n\n  // Remove a behavior\n  _removeBehavior(behavior) {\n    // Don't worry about the clean up if the view is destroyed\n    if (this._isDestroyed) { return; }\n\n    // Remove behavior-only triggers and events\n    this.undelegate(`.trig${ behavior.cid } .${ behavior.cid }`);\n\n    this._behaviors = _.without(this._behaviors, behavior);\n  },\n\n  _bindBehaviorUIElements() {\n    _invoke(this._behaviors, 'bindUIElements');\n  },\n\n  _unbindBehaviorUIElements() {\n    _invoke(this._behaviors, 'unbindUIElements');\n  },\n\n  _triggerEventOnBehaviors() {\n    const behaviors = this._behaviors;\n    // Use good ol' for as this is a very hot function\n    for (let i = 0, length = behaviors && behaviors.length; i < length; i++) {\n      triggerMethod.apply(behaviors[i], arguments);\n    }\n  }\n};\n","import _ from 'underscore';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\n// MixinOptions\n// - collectionEvents\n// - modelEvents\n\nexport default {\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  _delegateEntityEvents(model, collection) {\n    const modelEvents = _.result(this, 'modelEvents');\n\n    if (modelEvents) {\n      unbindEvents.call(this, model, modelEvents);\n      bindEvents.call(this, model, modelEvents);\n    }\n\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n\n    if (collectionEvents) {\n      unbindEvents.call(this, collection, collectionEvents);\n      bindEvents.call(this, collection, collectionEvents);\n    }\n  },\n\n  _undelegateEntityEvents(model, collection) {\n    const modelEvents = _.result(this, 'modelEvents');\n    unbindEvents.call(this, model, modelEvents);\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n    unbindEvents.call(this, collection, collectionEvents);\n  }\n};\n","// Borrow event splitter from Backbone\nconst delegateEventSplitter = /^(\\S+)\\s*(.*)$/;\n\n// Set event name to be namespaced using a unique index\n// to generate a non colliding event namespace\n// http://api.jquery.com/event.namespace/\nconst getNamespacedEventName = function(eventName, namespace) {\n  const match = eventName.match(delegateEventSplitter);\n  return `${ match[1] }.${ namespace } ${ match[2] }`;\n};\n\nexport default getNamespacedEventName;\n","// Add Feature flags here\n// e.g. 'class' => false\nconst FEATURES = {\n  childViewEventPrefix: true,\n  triggersStopPropagation: true,\n  triggersPreventDefault: true\n};\n\nfunction isEnabled(name) {\n  return !!FEATURES[name];\n}\n\nfunction setEnabled(name, state) {\n  return FEATURES[name] = state;\n}\n\nexport {\n  FEATURES,\n  setEnabled,\n  isEnabled\n};\n","import _ from 'underscore';\nimport getNamespacedEventName from '../utils/get-namespaced-event-name';\nimport { isEnabled } from '../config/features';\n\n// Internal method to create an event handler for a given `triggerDef` like\n// 'click:foo'\nfunction buildViewTrigger(view, triggerDef) {\n  if (_.isString(triggerDef)) {\n    triggerDef = {event: triggerDef};\n  }\n\n  const eventName = triggerDef.event;\n\n  let shouldPreventDefault = !!triggerDef.preventDefault;\n\n  if (isEnabled('triggersPreventDefault')) {\n    shouldPreventDefault = triggerDef.preventDefault !== false;\n  }\n\n  let shouldStopPropagation = !!triggerDef.stopPropagation;\n\n  if (isEnabled('triggersStopPropagation')) {\n    shouldStopPropagation = triggerDef.stopPropagation !== false;\n  }\n\n  return function(event) {\n    if (shouldPreventDefault) {\n      event.preventDefault();\n    }\n\n    if (shouldStopPropagation) {\n      event.stopPropagation();\n    }\n\n    view.triggerMethod(eventName, view, event);\n  };\n}\n\nexport default {\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  _getViewTriggers(view, triggers) {\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return _.reduce(triggers, (events, value, key) => {\n      key = getNamespacedEventName(key, `trig${ this.cid }`);\n      events[key] = buildViewTrigger(view, value);\n      return events;\n    }, {});\n  }\n\n};\n","import _ from 'underscore';\n// allows for the use of the @ui. syntax within\n// a given key for triggers and events\n// swaps the @ui with the associated selector.\n// Returns a new, non-mutated, parsed events hash.\nconst normalizeUIKeys = function(hash, ui) {\n  return _.reduce(hash, (memo, val, key) => {\n    const normalizedKey = normalizeUIString(key, ui);\n    memo[normalizedKey] = val;\n    return memo;\n  }, {});\n};\n\n// utility method for parsing @ui. syntax strings\n// into associated selector\nconst normalizeUIString = function(uiString, ui) {\n  return uiString.replace(/@ui\\.[a-zA-Z-_$0-9]*/g, (r) => {\n    return ui[r.slice(4)];\n  });\n};\n\n// allows for the use of the @ui. syntax within\n// a given value for regions\n// swaps the @ui with the associated selector\nconst normalizeUIValues = function(hash, ui, properties) {\n  _.each(hash, (val, key) => {\n    if (_.isString(val)) {\n      hash[key] = normalizeUIString(val, ui);\n    } else if (_.isObject(val) && _.isArray(properties)) {\n      _.extend(val, normalizeUIValues(_.pick(val, properties), ui));\n      /* Value is an object, and we got an array of embedded property names to normalize. */\n      _.each(properties, (property) => {\n        const propertyVal = val[property];\n        if (_.isString(propertyVal)) {\n          val[property] = normalizeUIString(propertyVal, ui);\n        }\n      });\n    }\n  });\n  return hash;\n};\n\nexport default {\n\n  // normalize the keys of passed hash with the views `ui` selectors.\n  // `{\"@ui.foo\": \"bar\"}`\n  normalizeUIKeys(hash) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIKeys(hash, uiBindings);\n  },\n\n  // normalize the passed string with the views `ui` selectors.\n  // `\"@ui.bar\"`\n  normalizeUIString(uiString) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIString(uiString, uiBindings);\n  },\n\n  // normalize the values of passed hash with the views `ui` selectors.\n  // `{foo: \"@ui.bar\"}`\n  normalizeUIValues(hash, properties) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIValues(hash, uiBindings, properties);\n  },\n\n  _getUIBindings() {\n    const uiBindings = _.result(this, '_uiBindings');\n    const ui = _.result(this, 'ui');\n    return uiBindings || ui;\n  },\n\n  // This method binds the elements specified in the \"ui\" hash inside the view's code with\n  // the associated jQuery selectors.\n  _bindUIElements() {\n    if (!this.ui) { return; }\n\n    // store the ui hash in _uiBindings so they can be reset later\n    // and so re-rendering the view will be able to find the bindings\n    if (!this._uiBindings) {\n      this._uiBindings = this.ui;\n    }\n\n    // get the bindings result, as a function or otherwise\n    const bindings = _.result(this, '_uiBindings');\n\n    // empty the ui so we don't have anything to start with\n    this._ui = {};\n\n    // bind each of the selectors\n    _.each(bindings, (selector, key) => {\n      this._ui[key] = this.$(selector);\n    });\n\n    this.ui = this._ui;\n  },\n\n  _unbindUIElements() {\n    if (!this.ui || !this._uiBindings) { return; }\n\n    // delete all of the existing ui bindings\n    _.each(this.ui, ($el, name) => {\n      delete this.ui[name];\n    });\n\n    // reset the ui element to the original bindings configuration\n    this.ui = this._uiBindings;\n    delete this._uiBindings;\n    delete this._ui;\n  },\n\n  _getUI(name) {\n    return this._ui[name];\n  }\n};\n","// DomApi\n//  ---------\nimport _ from 'underscore';\nimport Backbone from 'backbone';\n\n// Performant method for returning the jQuery instance\nfunction getEl(el) {\n  return el instanceof Backbone.$ ? el : Backbone.$(el);\n}\n\n// Static setter\nexport function setDomApi(mixin) {\n  this.prototype.Dom = _.extend({}, this.prototype.Dom, mixin);\n  return this;\n}\n\nexport default {\n\n  // Returns a new HTML DOM node instance\n  createBuffer() {\n    return document.createDocumentFragment();\n  },\n\n  // Lookup the `selector` string\n  // Selector may also be a DOM element\n  // Returns an array-like object of nodes\n  getEl(selector) {\n    return getEl(selector);\n  },\n\n  // Finds the `selector` string with the el\n  // Returns an array-like object of nodes\n  findEl(el, selector, _$el = getEl(el)) {\n    return _$el.find(selector);\n  },\n\n  // Returns true if the el contains the node childEl\n  hasEl(el, childEl) {\n    return el.contains(childEl && childEl.parentNode);\n  },\n\n  // Detach `el` from the DOM without removing listeners\n  detachEl(el, _$el = getEl(el)) {\n    _$el.detach();\n  },\n\n  // Remove `oldEl` from the DOM and put `newEl` in its place\n  replaceEl(newEl, oldEl) {\n    if (newEl === oldEl) {\n      return;\n    }\n\n    const parent = oldEl.parentNode;\n\n    if (!parent) {\n      return;\n    }\n\n    parent.replaceChild(newEl, oldEl);\n  },\n\n  // Swaps the location of `el1` and `el2` in the DOM\n  swapEl(el1, el2) {\n    if (el1 === el2) {\n      return;\n    }\n\n    const parent1 = el1.parentNode;\n    const parent2 = el2.parentNode;\n\n    if (!parent1 || !parent2) {\n      return;\n    }\n\n    const next1 = el1.nextSibling;\n    const next2 = el2.nextSibling;\n\n    parent1.insertBefore(el2, next1);\n    parent2.insertBefore(el1, next2);\n  },\n\n  // Replace the contents of `el` with the HTML string of `html`\n  setContents(el, html, _$el = getEl(el)) {\n    _$el.html(html);\n  },\n\n  // Takes the DOM node `el` and appends the DOM node `contents`\n  // to the end of the element's contents.\n  appendContents(el, contents, {_$el = getEl(el), _$contents = getEl(contents)} = {}) {\n    _$el.append(_$contents);\n  },\n\n  // Does the el have child nodes\n  hasContents(el) {\n    return !!el && el.hasChildNodes();\n  },\n\n  // Remove the inner contents of `el` from the DOM while leaving\n  // `el` itself in the DOM.\n  detachContents(el, _$el = getEl(el)) {\n    _$el.contents().detach();\n  }\n};\n","// ViewMixin\n//  ---------\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from '../common/trigger-method';\nimport BehaviorsMixin from './behaviors';\nimport CommonMixin from './common';\nimport DelegateEntityEventsMixin from './delegate-entity-events';\nimport TriggersMixin from './triggers';\nimport UIMixin from './ui';\nimport { isEnabled } from '../config/features';\nimport DomApi from '../config/dom';\n\n// MixinOptions\n// - behaviors\n// - childViewEventPrefix\n// - childViewEvents\n// - childViewTriggers\n// - collectionEvents\n// - modelEvents\n// - triggers\n// - ui\n\n\nconst ViewMixin = {\n  Dom: DomApi,\n\n  supportsRenderLifecycle: true,\n  supportsDestroyLifecycle: true,\n\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return !!this._isDestroyed;\n  },\n\n  _isRendered: false,\n\n  isRendered() {\n    return !!this._isRendered;\n  },\n\n  _isAttached: false,\n\n  isAttached() {\n    return !!this._isAttached;\n  },\n\n  // Overriding Backbone.View's `delegateEvents` to handle\n  // `events` and `triggers`\n  delegateEvents(eventsArg) {\n\n    this._proxyBehaviorViewProperties();\n    this._buildEventProxies();\n\n    const viewEvents = this._getEvents(eventsArg);\n\n    if (typeof eventsArg === 'undefined') {\n      this.events = viewEvents;\n    }\n\n    const combinedEvents = _.extend({},\n      this._getBehaviorEvents(),\n      viewEvents,\n      this._getBehaviorTriggers(),\n      this.getTriggers()\n    );\n\n    Backbone.View.prototype.delegateEvents.call(this, combinedEvents);\n\n    return this;\n  },\n\n  _getEvents(eventsArg) {\n    const events = eventsArg || this.events;\n\n    if (_.isFunction(events)) {\n      return this.normalizeUIKeys(events.call(this));\n    }\n\n    return this.normalizeUIKeys(events);\n  },\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Allow `triggers` to be configured as a function\n    const triggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return this._getViewTriggers(this, triggers);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.model, this.collection);\n\n    // bind each behaviors model and collection events\n    this._delegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle unbinding `modelEvents`, and `collectionEvents` configuration\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.model, this.collection);\n\n    // unbind each behaviors model and collection events\n    this._undelegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle destroying the view and its children.\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n    const shouldTriggerDetach = this._isAttached && !this._shouldDisableEvents;\n\n    this.triggerMethod('before:destroy', this, ...args);\n    if (shouldTriggerDetach) {\n      this.triggerMethod('before:detach', this);\n    }\n\n    // unbind UI elements\n    this.unbindUIElements();\n\n    // remove the view from the DOM\n    this._removeElement();\n\n    if (shouldTriggerDetach) {\n      this._isAttached = false;\n      this.triggerMethod('detach', this);\n    }\n\n    // remove children after the remove to prevent extra paints\n    this._removeChildren();\n\n    this._isDestroyed = true;\n    this._isRendered = false;\n\n    // Destroy behaviors after _isDestroyed flag\n    this._destroyBehaviors(...args);\n\n    this.triggerMethod('destroy', this, ...args);\n\n    this.stopListening();\n\n    return this;\n  },\n\n  // Equates to this.$el.remove\n  _removeElement() {\n    this.$el.off().removeData();\n    this.Dom.detachEl(this.el, this.$el);\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n    this._bindBehaviorUIElements();\n\n    return this;\n  },\n\n  // This method unbinds the elements specified in the \"ui\" hash\n  unbindUIElements() {\n    this._unbindUIElements();\n    this._unbindBehaviorUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // used as the prefix for child view events\n  // that are forwarded through the layoutview\n  childViewEventPrefix() {\n    return isEnabled('childViewEventPrefix') ? 'childview' : false;\n  },\n\n  // import the `triggerMethod` to trigger events with corresponding\n  // methods if the method exists\n  triggerMethod() {\n    const ret = triggerMethod.apply(this, arguments);\n\n    this._triggerEventOnBehaviors.apply(this, arguments);\n\n    return ret;\n  },\n\n  // Cache `childViewEvents` and `childViewTriggers`\n  _buildEventProxies() {\n    this._childViewEvents = _.result(this, 'childViewEvents');\n    this._childViewTriggers = _.result(this, 'childViewTriggers');\n  },\n\n  _proxyChildViewEvents(view) {\n    this.listenTo(view, 'all', this._childViewEventHandler);\n  },\n\n  _childViewEventHandler(eventName, ...args) {\n    const childViewEvents = this.normalizeMethods(this._childViewEvents);\n\n    // call collectionView childViewEvent if defined\n    if (typeof childViewEvents !== 'undefined' && _.isFunction(childViewEvents[eventName])) {\n      childViewEvents[eventName].apply(this, args);\n    }\n\n    // use the parent view's proxyEvent handlers\n    const childViewTriggers = this._childViewTriggers;\n\n    // Call the event with the proxy name on the parent layout\n    if (childViewTriggers && _.isString(childViewTriggers[eventName])) {\n      this.triggerMethod(childViewTriggers[eventName], ...args);\n    }\n\n    const prefix = _.result(this, 'childViewEventPrefix');\n\n    if (prefix !== false) {\n      const childEventName = prefix + ':' + eventName;\n\n      this.triggerMethod(childEventName, ...args);\n    }\n  }\n};\n\n_.extend(ViewMixin, BehaviorsMixin, CommonMixin, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default ViewMixin;\n","import { triggerMethodOn } from '../common/trigger-method';\n\nexport function renderView(view) {\n  if (view._isRendered) {\n    return;\n  }\n\n  if (!view.supportsRenderLifecycle) {\n    triggerMethodOn(view, 'before:render', view);\n  }\n\n  view.render();\n\n  if (!view.supportsRenderLifecycle) {\n    view._isRendered = true;\n    triggerMethodOn(view, 'render', view);\n  }\n}\n\nexport function destroyView(view) {\n  if (view.destroy) {\n    view.destroy();\n    return;\n  }\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'before:destroy', view);\n  }\n\n  const shouldTriggerDetach = view._isAttached && !view._shouldDisableEvents;\n\n  if (shouldTriggerDetach) {\n    triggerMethodOn(view, 'before:detach', view);\n  }\n\n  view.remove();\n\n  if (shouldTriggerDetach) {\n    view._isAttached = false;\n    triggerMethodOn(view, 'detach', view);\n  }\n\n  view._isDestroyed = true;\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'destroy', view);\n  }\n}\n","// Region\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport { renderView, destroyView } from './common/view';\nimport monitorViewEvents from './common/monitor-view-events';\nimport isNodeAttached from './common/is-node-attached';\nimport { triggerMethodOn } from './common/trigger-method';\nimport MarionetteObject from './object';\nimport MarionetteError from './error';\nimport View from './view';\nimport DomApi, { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'allowMissingEl',\n  'parentEl',\n  'replaceElement'\n];\n\nconst Region = MarionetteObject.extend({\n  Dom: DomApi,\n\n  cidPrefix: 'mnr',\n  replaceElement: false,\n  _isReplaced: false,\n  _isSwappingView: false,\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    // getOption necessary because options.el may be passed as undefined\n    this._initEl = this.el = this.getOption('el');\n\n    // Handle when this.el is passed in as a $ wrapped element.\n    this.el = this.el instanceof Backbone.$ ? this.el[0] : this.el;\n\n    if (!this.el) {\n      throw new MarionetteError({\n        name: 'NoElError',\n        message: 'An \"el\" must be specified for a region.'\n      });\n    }\n\n    this.$el = this.getEl(this.el);\n    MarionetteObject.call(this, options);\n  },\n\n  // Displays a backbone view instance inside of the region. Handles calling the `render`\n  // method for you. Reads content directly from the `el` attribute. The `preventDestroy`\n  // option can be used to prevent a view from the old view being destroyed on show.\n  show(view, options) {\n    if (!this._ensureElement(options)) {\n      return;\n    }\n\n    view = this._getView(view, options);\n\n    if (view === this.currentView) { return this; }\n\n    this._isSwappingView = !!this.currentView;\n\n    this.triggerMethod('before:show', this, view, options);\n\n    // Assume an attached view is already in the region for pre-existing DOM\n    if (!view._isAttached) {\n      this.empty(options);\n    }\n\n    this._setupChildView(view);\n\n    this.currentView = view;\n\n    renderView(view);\n\n    this._attachView(view, options);\n\n    this.triggerMethod('show', this, view, options);\n\n    this._isSwappingView = false;\n\n    return this;\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    this._proxyChildViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other than through the region.\n    // If this happens we need to remove the reference to the currentView since once a view\n    // has been destroyed we can not reuse it.\n    view.on('destroy', this._empty, this);\n  },\n\n  _proxyChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    parentView._proxyChildViewEvents(view);\n  },\n\n  // If the regions parent view is not monitoring its attach/detach events\n  _shouldDisableMonitoring() {\n    return this._parentView && this._parentView.monitorViewEvents === false;\n  },\n\n  _attachView(view, options = {}) {\n    const shouldTriggerAttach = !view._isAttached && isNodeAttached(this.el) && !this._shouldDisableMonitoring();\n    const shouldReplaceEl = typeof options.replaceElement === 'undefined' ? !!_.result(this, 'replaceElement') : !!options.replaceElement;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    if (shouldReplaceEl) {\n      this._replaceEl(view);\n    } else {\n      this.attachHtml(view);\n    }\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  _ensureElement(options = {}) {\n    if (!_.isObject(this.el)) {\n      this.$el = this.getEl(this.el);\n      this.el = this.$el[0];\n      // Make sure the $el contains only the el\n      this.$el = this.Dom.getEl(this.el);\n    }\n\n    if (!this.$el || this.$el.length === 0) {\n      const allowMissingEl = typeof options.allowMissingEl === 'undefined' ? !!_.result(this, 'allowMissingEl') : !!options.allowMissingEl;\n\n      if (allowMissingEl) {\n        return false;\n      } else {\n        throw new MarionetteError(`An \"el\" must exist in DOM for this region ${this.cid}`);\n      }\n    }\n    return true;\n  },\n\n  _getView(view) {\n    if (!view) {\n      throw new MarionetteError({\n        name: 'ViewNotValid',\n        message: 'The view passed is undefined and therefore invalid. You must pass a view instance to show.'\n      });\n    }\n\n    if (view._isDestroyed) {\n      throw new MarionetteError({\n        name: 'ViewDestroyedError',\n        message: `View (cid: \"${view.cid}\") has already been destroyed and cannot be used.`\n      });\n    }\n\n    if (view instanceof Backbone.View) {\n      return view;\n    }\n\n    const viewOptions = this._getViewOptions(view);\n\n    return new View(viewOptions);\n  },\n\n  // This allows for a template or a static string to be\n  // used as a template\n  _getViewOptions(viewOptions) {\n    if (_.isFunction(viewOptions)) {\n      return { template: viewOptions };\n    }\n\n    if (_.isObject(viewOptions)) {\n      return viewOptions;\n    }\n\n    const template = function() { return viewOptions; };\n\n    return { template };\n  },\n\n  // Override this method to change how the region finds the DOM element that it manages. Return\n  // a jQuery selector object scoped to a provided parent el or the document if none exists.\n  getEl(el) {\n    const context = _.result(this, 'parentEl');\n\n    if (context && _.isString(el)) {\n      return this.Dom.findEl(context, el);\n    }\n\n    return this.Dom.getEl(el);\n  },\n\n  _replaceEl(view) {\n    // always restore the el to ensure the regions el is present before replacing\n    this._restoreEl();\n\n    view.on('before:destroy', this._restoreEl, this);\n\n    this.Dom.replaceEl(view.el, this.el);\n\n    this._isReplaced = true;\n  },\n\n  // Restore the region's element in the DOM.\n  _restoreEl() {\n    // There is nothing to replace\n    if (!this._isReplaced) {\n      return;\n    }\n\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._detachView(view);\n\n    this._isReplaced = false;\n  },\n\n  // Check to see if the region's el was replaced.\n  isReplaced() {\n    return !!this._isReplaced;\n  },\n\n  // Check to see if a view is being swapped by another\n  isSwappingView() {\n    return !!this._isSwappingView;\n  },\n\n  // Override this method to change how the new view is appended to the `$el` that the\n  // region is managing\n  attachHtml(view) {\n    this.Dom.appendContents(this.el, view.el, {_$el: this.$el, _$contents: view.$el});\n  },\n\n  // Destroy the current view, if there is one. If there is no current view, it does\n  // nothing and returns immediately.\n  empty(options = { allowMissingEl: true }) {\n    const view = this.currentView;\n\n    // If there is no view in the region we should only detach current html\n    if (!view) {\n      if (this._ensureElement(options)) {\n        this.detachHtml();\n      }\n      return this;\n    }\n\n    const shouldDestroy = !options.preventDestroy;\n\n    if (!shouldDestroy) {\n      deprecate('The preventDestroy option is deprecated. Use Region#detachView');\n    }\n\n    this._empty(view, shouldDestroy);\n    return this;\n  },\n\n  _empty(view, shouldDestroy) {\n    view.off('destroy', this._empty, this);\n    this.triggerMethod('before:empty', this, view);\n\n    this._restoreEl();\n\n    delete this.currentView;\n\n    if (!view._isDestroyed) {\n      if (shouldDestroy) {\n        this.removeView(view);\n      } else {\n        this._detachView(view);\n      }\n      this._stopChildViewEvents(view);\n    }\n\n    this.triggerMethod('empty', this, view);\n  },\n\n  _stopChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    this._parentView.stopListening(view);\n  },\n\n  destroyView(view) {\n    if (view._isDestroyed) {\n      return view;\n    }\n\n    view._shouldDisableEvents = this._shouldDisableMonitoring();\n    destroyView(view);\n    return view;\n  },\n\n  removeView(view) {\n    this.destroyView(view);\n  },\n\n  // Empties the Region without destroying the view\n  // Returns the detached view\n  detachView() {\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._empty(view);\n\n    return view;\n  },\n\n  _detachView(view) {\n    const shouldTriggerDetach = view._isAttached && !this._shouldDisableMonitoring();;\n    const shouldRestoreEl = this._isReplaced;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    if (shouldRestoreEl) {\n      this.Dom.replaceEl(this.el, view.el);\n    } else {\n      this.detachHtml();\n    }\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the region detaches current content\n  detachHtml() {\n    this.Dom.detachContents(this.el, this.$el);\n  },\n\n  // Checks whether a view is currently present within the region. Returns `true` if there is\n  // and `false` if no view is present.\n  hasView() {\n    return !!this.currentView;\n  },\n\n  // Reset the region by destroying any existing view and clearing out the cached `$el`.\n  // The next time a view is shown via this region, the region will re-query the DOM for\n  // the region's `el`.\n  reset(options) {\n    this.empty(options);\n\n    if (this.$el) {\n      this.el = this._initEl;\n    }\n\n    delete this.$el;\n    return this;\n  },\n\n  destroy(options) {\n    if (this._isDestroyed) { return this; }\n\n    this.reset(options);\n\n    if (this._name) {\n      this._parentView._removeReferences(this._name);\n    }\n    delete this._parentView;\n    delete this._name;\n\n    return MarionetteObject.prototype.destroy.apply(this, arguments);\n  }\n}, {\n  setDomApi\n});\n\nexport default Region;\n","import _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\nimport Region from '../region';\n\n// return the region instance from the definition\nexport default function(definition, defaults) {\n  if (definition instanceof Region) {\n    return definition;\n  }\n\n  return buildRegionFromDefinition(definition, defaults);\n}\n\nfunction buildRegionFromDefinition(definition, defaults) {\n  const opts = _.extend({}, defaults);\n\n  if (_.isString(definition)) {\n    _.extend(opts, { el: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isFunction(definition)) {\n    _.extend(opts, { regionClass: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isObject(definition)) {\n    if (definition.selector) {\n      deprecate('The selector option on a Region definition object is deprecated. Use el to pass a selector string');\n    }\n\n    _.extend(opts, { el: definition.selector }, definition);\n\n    return buildRegionFromObject(opts);\n  }\n\n  throw new MarionetteError({\n    message: 'Improper region configuration type.',\n    url: 'marionette.region.html#region-configuration-types'\n  });\n}\n\nfunction buildRegionFromObject(definition) {\n  const RegionClass = definition.regionClass\n\n  const options = _.omit(definition, 'regionClass');\n\n  return new RegionClass(options);\n}\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport buildRegion from '../common/build-region';\nimport Region from '../region';\n\n// MixinOptions\n// - regions\n// - regionClass\n\nexport default {\n  regionClass: Region,\n\n  // Internal method to initialize the regions that have been defined in a\n  // `regions` attribute on this View.\n  _initRegions() {\n\n    // init regions hash\n    this.regions = this.regions || {};\n    this._regions = {};\n\n    this.addRegions(_.result(this, 'regions'));\n  },\n\n  // Internal method to re-initialize all of the regions by updating\n  // the `el` that they point to\n  _reInitRegions() {\n    _invoke(this._regions, 'reset');\n  },\n\n  // Add a single region, by name, to the View\n  addRegion(name, definition) {\n    const regions = {};\n    regions[name] = definition;\n    return this.addRegions(regions)[name];\n  },\n\n  // Add multiple regions as a {name: definition, name2: def2} object literal\n  addRegions(regions) {\n    // If there's nothing to add, stop here.\n    if (_.isEmpty(regions)) {\n      return;\n    }\n\n    // Normalize region selectors hash to allow\n    // a user to use the @ui. syntax.\n    regions = this.normalizeUIValues(regions, ['selector', 'el']);\n\n    // Add the regions definitions to the regions property\n    this.regions = _.extend({}, this.regions, regions);\n\n    return this._addRegions(regions);\n  },\n\n  // internal method to build and add regions\n  _addRegions(regionDefinitions) {\n    const defaults = {\n      regionClass: this.regionClass,\n      parentEl: _.partial(_.result, this, 'el')\n    };\n\n    return _.reduce(regionDefinitions, (regions, definition, name) => {\n      regions[name] = buildRegion(definition, defaults);\n      this._addRegion(regions[name], name);\n      return regions;\n    }, {});\n  },\n\n  _addRegion(region, name) {\n    this.triggerMethod('before:add:region', this, name, region);\n\n    region._parentView = this;\n    region._name = name;\n\n    this._regions[name] = region;\n\n    this.triggerMethod('add:region', this, name, region);\n  },\n\n  // Remove a single region from the View, by name\n  removeRegion(name) {\n    const region = this._regions[name];\n\n    this._removeRegion(region, name);\n\n    return region;\n  },\n\n  // Remove all regions from the View\n  removeRegions() {\n    const regions = this._getRegions();\n\n    _.each(this._regions, _.bind(this._removeRegion, this));\n\n    return regions;\n  },\n\n  _removeRegion(region, name) {\n    this.triggerMethod('before:remove:region', this, name, region);\n\n    region.destroy();\n\n    this.triggerMethod('remove:region', this, name, region);\n  },\n\n  // Called in a region's destroy\n  _removeReferences(name) {\n    delete this.regions[name];\n    delete this._regions[name];\n  },\n\n  // Empty all regions in the region manager, but\n  // leave them attached\n  emptyRegions() {\n    const regions = this.getRegions();\n    _invoke(regions, 'empty');\n    return regions;\n  },\n\n  // Checks to see if view contains region\n  // Accepts the region name\n  // hasRegion('main')\n  hasRegion(name) {\n    return !!this.getRegion(name);\n  },\n\n  // Provides access to regions\n  // Accepts the region name\n  // getRegion('main')\n  getRegion(name) {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._regions[name];\n  },\n\n  // Get all regions\n  _getRegions() {\n    return _.clone(this._regions);\n  },\n\n  getRegions() {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._getRegions();\n  },\n\n  showChildView(name, view, ...args) {\n    const region = this.getRegion(name);\n    return region.show(view, ...args);\n  },\n\n  detachChildView(name) {\n    return this.getRegion(name).detachView();\n  },\n\n  getChildView(name) {\n    return this.getRegion(name).currentView;\n  }\n\n};\n","// Renderer\n// --------\n\nimport _ from 'underscore';\nimport MarionetteError from '../error';\nimport TemplateCache from '../template-cache';\n\n// Render a template with data by passing in the template\n// selector and the data to render.\nconst Renderer = {\n\n  // Render a template with data. The `template` parameter is\n  // passed to the `TemplateCache` object to retrieve the\n  // template function. Override this method to provide your own\n  // custom rendering and template handling for all of Marionette.\n  render(template, data) {\n    if (!template) {\n      throw new MarionetteError({\n        name: 'TemplateNotFoundError',\n        message: 'Cannot render the template since its false, null or undefined.'\n      });\n    }\n\n    const templateFunc = _.isFunction(template) ? template : TemplateCache.get(template);\n\n    return templateFunc(data);\n  }\n};\n\nexport default Renderer;\n","// View\n// ---------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport ViewMixin from './mixins/view';\nimport RegionsMixin from './mixins/regions';\nimport Renderer from './config/renderer';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'regionClass',\n  'regions',\n  'template',\n  'templateContext',\n  'triggers',\n  'ui'\n];\n\n// The standard view. Includes view events, automatic rendering\n// of Underscore templates, nested views, and more.\nconst View = Backbone.View.extend({\n\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this._initRegions();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Serialize the view's model *or* collection, if\n  // it exists, for the template\n  serializeData() {\n    if (!this.model && !this.collection) {\n      return {};\n    }\n\n    // If we have a model, we serialize that\n    if (this.model) {\n      return this.serializeModel();\n    }\n\n    // Otherwise, we serialize the collection,\n    // making it available under the `items` property\n    return {\n      items: this.serializeCollection()\n    };\n  },\n\n  // Prepares the special `model` property of a view\n  // for being displayed in the template. By default\n  // we simply clone the attributes. Override this if\n  // you need a custom transformation for your view's model\n  serializeModel() {\n    if (!this.model) { return {}; }\n    return _.clone(this.model.attributes);\n  },\n\n  // Serialize a collection by cloning each of\n  // its model's attributes\n  serializeCollection() {\n    if (!this.collection) { return {}; }\n    return this.collection.map(function(model) { return _.clone(model.attributes); });\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // rendered or attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isRendered = this.Dom.hasContents(this.el);\n    this._isAttached = isNodeAttached(this.el);\n\n    if (this._isRendered) {\n      this.bindUIElements();\n    }\n\n    return this;\n  },\n\n  // Render the view, defaulting to underscore.js templates.\n  // You can override this in your view definition to provide\n  // a very specific rendering for your view. In general, though,\n  // you should override the `Marionette.Renderer` object to\n  // change how Marionette renders views.\n  // Subsequent renders after the first will re-render all nested\n  // views.\n  render() {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:render', this);\n\n    // If this is not the first render call, then we need to\n    // re-initialize the `el` for each region\n    if (this._isRendered) {\n      this._reInitRegions();\n    }\n\n    this._renderTemplate();\n    this.bindUIElements();\n\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n\n    return this;\n  },\n\n  // Internal method to render the template with the serialized data\n  // and template context via the `Marionette.Renderer` object.\n  _renderTemplate() {\n    const template = this.getTemplate();\n\n    // Allow template-less views\n    if (template === false) {\n      deprecate('template:false is deprecated.  Use _.noop.');\n      return;\n    }\n\n    // Add in entity data and template context\n    const data = this.mixinTemplateContext(this.serializeData());\n\n    // Render and add to el\n    const html = this._renderHtml(template, data);\n    this.attachElContent(html);\n  },\n\n  // Renders the data into the template\n  _renderHtml(template, data) {\n    return Renderer.render(template, data, this);\n  },\n\n  // Get the template for this view\n  // instance. You can set a `template` attribute in the view\n  // definition or pass a `template: \"whatever\"` parameter in\n  // to the constructor options.\n  getTemplate() {\n    return this.template;\n  },\n\n  // Mix in template context methods. Looks for a\n  // `templateContext` attribute, which can either be an\n  // object literal, or a function that returns an object\n  // literal. All methods and attributes from this object\n  // are copies to the object passed in.\n  mixinTemplateContext(target = {}) {\n    const templateContext = _.result(this, 'templateContext');\n    return _.extend(target, templateContext);\n  },\n\n  // Attaches the content of a given view.\n  // This method can be overridden to optimize rendering,\n  // or to render in a non standard way.\n  //\n  // For example, using `innerHTML` instead of `$el.html`\n  //\n  // ```js\n  // attachElContent(html) {\n  //   this.el.innerHTML = html;\n  //   return this;\n  // }\n  // ```\n  attachElContent(html) {\n    this.Dom.setContents(this.el, html, this.$el);\n\n    return this;\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this.removeRegions();\n  },\n\n  _getImmediateChildren() {\n    return _.chain(this._getRegions())\n      .map('currentView')\n      .compact()\n      .value();\n  }\n}, {\n  // Sets the renderer for the Marionette.View class\n  setRenderer(renderer) {\n    this.prototype._renderHtml = renderer;\n    return this;\n  },\n\n  setDomApi\n});\n\n_.extend(View.prototype, ViewMixin, RegionsMixin);\n\nexport default View;\n","// Mix in methods from Underscore, for iteration, and other\n// collection related features.\n// Borrowing this code from Backbone.Collection:\n// https://github.com/jashkenas/backbone/blob/1.1.2/backbone.js#L962\n\nimport _ from 'underscore';\n\nconst methods = ['forEach', 'each', 'map', 'find', 'detect', 'filter',\n                'select', 'reject', 'every', 'all', 'some', 'any', 'include',\n                'contains', 'invoke', 'toArray', 'first', 'initial', 'rest',\n                'last', 'without', 'isEmpty', 'pluck', 'reduce', 'partition'];\n\nconst emulateCollection = function(object, listProperty) {\n  _.each(methods, function(method) {\n    object[method] = function() {\n      const list = _.result(this, listProperty);\n      const args = Array.prototype.slice.call(arguments);\n      return _[method].apply(_, [list].concat(args));\n    };\n  });\n};\n\nexport default emulateCollection;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function(views) {\n  this._views = {};\n  this._indexByModel = {};\n  this._indexByCustom = {};\n  this._updateLength();\n\n  _.each(views, _.bind(this.add, this));\n};\n\nemulateCollection(Container.prototype, '_getViews');\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  _getViews() {\n    return _.values(this._views);\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Optionally specify\n  // a custom key to store an retrieve the view.\n  add(view, customIndex) {\n    return this._add(view, customIndex)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _add(view, customIndex) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._views[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // index by custom\n    if (customIndex) {\n      this._indexByCustom[customIndex] = viewCid;\n    }\n\n    return this;\n  },\n\n  // Find a view by the model that was attached to\n  // it. Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to\n  // it. Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by a custom indexer.\n  findByCustom(index) {\n    const viewCid = this._indexByCustom[index];\n    return this.findByCid(viewCid);\n  },\n\n  // Find by index. This is not guaranteed to be a\n  // stable index.\n  findByIndex(index) {\n    return _.values(this._views)[index];\n  },\n\n  // retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._views[cid];\n  },\n\n  // Remove a view\n  remove(view) {\n    return this._remove(view)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _remove(view) {\n    const viewCid = view.cid;\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // delete custom index\n    _.some(this._indexByCustom, _.bind(function(cid, key) {\n      if (cid === viewCid) {\n        delete this._indexByCustom[key];\n        return true;\n      }\n    }, this));\n\n    // remove the view from the container\n    delete this._views[viewCid];\n\n    return this;\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = _.size(this._views);\n\n    return this;\n  }\n});\n\nexport default Container;\n","// Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './child-view-container';\nimport MarionetteError from './error';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'filter',\n  'emptyView',\n  'emptyViewOptions',\n  'modelEvents',\n  'reorderOnSort',\n  'sort',\n  'triggers',\n  'ui',\n  'viewComparator'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n\n  // flag for maintaining the sorted order of the collection\n  sort: true,\n\n  // constructor\n  // option to pass `{sort: false}` to prevent the `CollectionView` from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  //\n  // option to pass `{viewComparator: compFunction()}` to allow the `CollectionView`\n  // to use a custom sort order for the collection.\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this.once('render', this._initialEvents);\n    this._initChildViewStorage();\n    this._bufferedChildren = [];\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Instead of inserting elements one by one into the page, it's much more performant to insert\n  // elements into a document fragment and then insert that document fragment into the page\n  _startBuffering() {\n    this._isBuffering = true;\n  },\n\n  _endBuffering() {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n    const triggerOnChildren = shouldTriggerAttach ? this._getImmediateChildren() : [];\n\n    this._isBuffering = false;\n\n    _.each(triggerOnChildren, child => {\n      triggerMethodOn(child, 'before:attach', child);\n    });\n\n    this.attachBuffer(this, this._createBuffer());\n\n    _.each(triggerOnChildren, child => {\n      child._isAttached = true;\n      triggerMethodOn(child, 'attach', child);\n    });\n\n    this._bufferedChildren = [];\n  },\n\n  _getImmediateChildren() {\n    return _.values(this.children._views);\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.render);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Handle a child added to the collection\n  _onCollectionAdd(child, collection, opts) {\n    // `index` is present when adding with `at` since BB 1.2; indexOf fallback for < 1.2\n    let index = opts.at !== undefined && (opts.index || collection.indexOf(child));\n\n    // When filtered or when there is no initial index, calculate index.\n    if (this.filter || index === false) {\n      index = _.indexOf(this._filteredSortedModels(index), child);\n    }\n\n    if (this._shouldAddChild(child, index)) {\n      this._destroyEmptyView();\n      this._addChild(child, index)\n    }\n  },\n\n  // Handle collection update model removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n    this._removeChildModels(changes.removed);\n  },\n\n  // Remove the child views and destroy them.\n  // This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  // \"models\" is an array of models and the corresponding views\n  // will be removed and destroyed from the CollectionView\n  _removeChildModels(models) {\n    // Used to determine where to update the remaining\n    // sibling view indices after these views are removed.\n    const removedViews = this._getRemovedViews(models);\n\n    if (!removedViews.length) {\n      return;\n    }\n\n    this.children._updateLength();\n\n    // decrement the index of views after this one\n    this._updateIndices(removedViews, false);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n  },\n\n  // Returns the views that will be used for re-indexing\n  // through CollectionView#_updateIndices.\n  _getRemovedViews(models) {\n\n    // Returning a view means something was removed.\n    return _.reduce(models, (removingViews, model) => {\n      const view = model && this.children.findByModel(model);\n\n      if (!view || view._isDestroyed) {\n        return removingViews;\n      }\n\n      this._removeChildView(view);\n\n      removingViews.push(view);\n\n      return removingViews;\n    }, []);\n  },\n\n  _removeChildView(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n\n    this.stopListening(view);\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views. Override this method to provide your own implementation of a\n  // render function for the collection view.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n    this._renderChildren();\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // An efficient rendering used for filtering. Instead of modifying the whole DOM for the\n  // collection view, we are only adding or removing the related childrenViews.\n  setFilter(filter, {preventRender} = {}) {\n    const canBeRendered = this._isRendered && !this._isDestroyed;\n    const filterChanged = this.filter !== filter;\n    const shouldRender = canBeRendered && filterChanged && !preventRender;\n\n    if (shouldRender) {\n      const previousModels = this._filteredSortedModels();\n      this.filter = filter;\n      const models = this._filteredSortedModels();\n      this._applyModelDeltas(models, previousModels);\n    } else {\n      this.filter = filter;\n    }\n\n    return this;\n  },\n\n  // `removeFilter` is actually an alias for removing filters.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  // Calculate and apply difference by cid between `models` and `previousModels`.\n  _applyModelDeltas(models, previousModels) {\n    const currentIds = {};\n    _.each(models, (model, index) => {\n      const addedChildNotExists = !this.children.findByModel(model);\n      if (addedChildNotExists) {\n        this._onCollectionAdd(model, this.collection, {at: index});\n      }\n      currentIds[model.cid] = true;\n    });\n\n    const removeModels = _.filter(previousModels, (prevModel) => {\n      return !currentIds[prevModel.cid] && this.children.findByModel(prevModel);\n    });\n\n    this._removeChildModels(removeModels);\n  },\n\n  // Reorder DOM after sorting. When your element's rendering do not use their index,\n  // you can pass reorderOnSort: true to only reorder the DOM after a sort instead of\n  // rendering all the collectionView.\n  reorder() {\n    const children = this.children;\n    const models = this._filteredSortedModels();\n\n    if (!models.length && this._showingEmptyView) { return this; }\n\n    const anyModelsAdded = _.some(models, function(model) {\n      return !children.findByModel(model);\n    });\n\n    // If there are any new models added due to filtering we need to add child views,\n    // so render as normal.\n    if (anyModelsAdded) {\n      this.render();\n    } else {\n\n      const filteredOutModels = [];\n\n      // Get the DOM nodes in the same order as the models and\n      // find the model that were children before but aren't in this new order.\n      const elsToReorder = _.reduce(this.children._views, function(viewEls, view) {\n        const index = _.indexOf(models, view.model);\n\n        if (index === -1) {\n          filteredOutModels.push(view.model);\n          return viewEls;\n        }\n\n        view._index = index;\n\n        viewEls[index] = view.el;\n\n        return viewEls;\n      }, new Array(models.length));\n\n      this.triggerMethod('before:reorder', this);\n\n      const elBuffer = this.Dom.createBuffer();\n\n      _.each(elsToReorder, (el) => {\n        this.Dom.appendContents(elBuffer, el);\n      });\n\n      // Since append moves elements that are already in the DOM, appending the elements\n      // will effectively reorder them.\n      this._appendReorderedChildren(elBuffer);\n\n      // remove any views that have been filtered out\n      this._removeChildModels(filteredOutModels);\n\n      this.triggerMethod('reorder', this);\n    }\n    return this;\n  },\n\n  // Render view after sorting. Override this method to change how the view renders\n  // after a `sort` on the collection.\n  resortView() {\n    if (this.reorderOnSort) {\n      this.reorder();\n    } else {\n      this._renderChildren();\n    }\n    return this;\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will render.\n  _sortViews() {\n    const models = this._filteredSortedModels();\n\n    // check for any changes in sort order of views\n    const orderChanged = _.find(models, (item, index) => {\n      const view = this.children.findByModel(item);\n      return !view || view._index !== index;\n    });\n\n    if (orderChanged) {\n      this.resortView();\n    }\n  },\n\n  // Internal reference to what index a `emptyView` is.\n  _emptyViewIndex: -1,\n\n  // Internal method. Separated so that CompositeView can append to the childViewContainer\n  // if necessary\n  _appendReorderedChildren(children) {\n    this.Dom.appendContents(this.el, children, {_$el: this.$el});\n  },\n\n  // Internal method. Separated so that CompositeView can have more control over events\n  // being triggered, around the rendering process\n  _renderChildren() {\n    if (this._isRendered) {\n      this._destroyEmptyView();\n      this._destroyChildren();\n    }\n\n    const models = this._filteredSortedModels();\n    if (this.isEmpty({processedModels: models})) {\n      this._showEmptyView();\n    } else {\n      this.triggerMethod('before:render:children', this);\n      this._startBuffering();\n      this._showCollection(models);\n      this._endBuffering();\n      this.triggerMethod('render:children', this);\n    }\n  },\n\n  _createView(model, index) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model, index);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n    return view;\n  },\n\n  _setupChildView(view, index) {\n    monitorViewEvents(view);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n\n    if (this.sort) {\n      view._index = index;\n    }\n  },\n\n  // Internal method to loop through collection and show each child view.\n  _showCollection(models) {\n    _.each(models, _.bind(this._addChild, this));\n    this.children._updateLength();\n  },\n\n  // Allow the collection to be sorted by a custom view comparator\n  _filteredSortedModels(addedAt) {\n    if (!this.collection || !this.collection.length) { return []; }\n\n    const viewComparator = this.getViewComparator();\n    let models = this.collection.models;\n    addedAt = Math.min(Math.max(addedAt, 0), models.length - 1);\n\n    if (viewComparator) {\n      let addedModel;\n      // Preserve `at` location, even for a sorted view\n      if (addedAt) {\n        addedModel = models[addedAt];\n        models = models.slice(0, addedAt).concat(models.slice(addedAt + 1));\n      }\n      models = this._sortModelsBy(models, viewComparator);\n      if (addedModel) {\n        models.splice(addedAt, 0, addedModel);\n      }\n    }\n\n    // Filter after sorting in case the filter uses the index\n    models = this._filterModels(models);\n\n    return models;\n  },\n\n  getViewComparator() {\n    return this.viewComparator;\n  },\n\n  // Filter an array of models, if a filter exists\n  _filterModels(models) {\n    if (this.filter) {\n      models = _.filter(models, (model, index) => {\n        return this._shouldAddChild(model, index);\n      });\n    }\n    return models;\n  },\n\n  _sortModelsBy(models, comparator) {\n    if (typeof comparator === 'string') {\n      return _.sortBy(models, (model) => {\n        return model.get(comparator);\n      });\n    } else if (comparator.length === 1) {\n      return _.sortBy(models, _.bind(comparator, this));\n    } else {\n      return _.clone(models).sort(_.bind(comparator, this));\n    }\n  },\n\n  // Internal method to show an empty view in place of a collection of child views,\n  // when the collection is empty\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (EmptyView && !this._showingEmptyView) {\n      this._showingEmptyView = true;\n\n      const model = new Backbone.Model();\n      let emptyViewOptions =\n        this.emptyViewOptions || this.childViewOptions;\n      if (_.isFunction(emptyViewOptions)) {\n        emptyViewOptions = emptyViewOptions.call(this, model, this._emptyViewIndex);\n      }\n\n      const view = this.buildChildView(model, EmptyView, emptyViewOptions);\n\n      this.triggerMethod('before:render:empty', this, view);\n      this.addChildView(view, 0);\n      this.triggerMethod('render:empty', this, view);\n    }\n  },\n\n  // Internal method to destroy an existing emptyView instance if one exists. Called when\n  // a collection view has been rendered empty, and then a child is added to the collection.\n  _destroyEmptyView() {\n    if (this._showingEmptyView) {\n      this.triggerMethod('before:remove:empty', this);\n\n      this._destroyChildren();\n      delete this._showingEmptyView;\n\n      this.triggerMethod('remove:empty', this);\n    }\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  // Internal method for building and adding a child view\n  _addChild(child, index) {\n    const view = this._createView(child, index);\n    this.addChildView(view, index);\n\n    return view;\n  },\n\n  _getChildViewOptions(child, index) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child, index);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index.\n  // This will also update the indices of later views in the collection in order to keep the\n  // children in sync with the collection.\n  addChildView(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n    this._setupChildView(view, index);\n\n    // Store the child view itself so we can properly remove and/or destroy it later\n    if (this._isBuffering) {\n      // Add to children, but don't update children's length.\n      this.children._add(view);\n    } else {\n      // increment indices of views after this one\n      this._updateIndices(view, true);\n      this.children.add(view);\n    }\n\n    renderView(view);\n\n    this._attachView(view, index);\n\n    this.triggerMethod('add:child', this, view);\n\n    return view;\n  },\n\n  // Internal method. This decrements or increments the indices of views after the added/removed\n  // view to keep in sync with the collection.\n  _updateIndices(views, increment) {\n    if (!this.sort) {\n      return;\n    }\n\n    if (!increment) {\n      _.each(_.sortBy(this.children._views, '_index'), (view, index) => {\n        view._index = index;\n      });\n\n      return;\n    }\n\n    const view = _.isArray(views) ? _.max(views, '_index') : views;\n\n    if (_.isObject(view)) {\n      // update the indexes of views after this one\n      _.each(this.children._views, (laterView) => {\n        if (laterView._index >= view._index) {\n          laterView._index += 1;\n        }\n      });\n    }\n  },\n\n  _attachView(view, index) {\n    // Only trigger attach if already attached and not buffering,\n    // otherwise _endBuffering() or Region#show() handles this.\n    const shouldTriggerAttach = !view._isAttached && !this._isBuffering && this._isAttached && this.monitorViewEvents !== false;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    this.attachHtml(this, view, index);\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  // Build a `childView` for a model in the collection.\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  // Remove the child view and destroy it. This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  removeChildView(view) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    this._removeChildView(view);\n    this.children._updateLength();\n    // decrement the index of views after this one\n    this._updateIndices(view, false);\n    return view;\n  },\n\n  // check if the collection is empty or optionally whether an array of pre-processed models is empty\n  isEmpty(options) {\n    let models;\n    if (_.result(options, 'processedModels')) {\n      models = options.processedModels;\n    } else {\n      models = this.collection ? this.collection.models : [];\n      models = this._filterModels(models);\n    }\n    return models.length === 0;\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(collectionView, buffer) {\n    this.Dom.appendContents(collectionView.el, buffer, {_$el: collectionView.$el});\n  },\n\n  // Create a fragment buffer from the currently buffered children\n  _createBuffer() {\n    const elBuffer = this.Dom.createBuffer();\n    _.each(this._bufferedChildren, (b) => {\n      this.Dom.appendContents(elBuffer, b.el, {_$contents: b.$el});\n    });\n    return elBuffer;\n  },\n\n  // Append the HTML to the collection's `el`. Override this method to do something other\n  // than `.append`.\n  attachHtml(collectionView, childView, index) {\n    if (collectionView._isBuffering) {\n      // buffering happens on reset events and initial renders\n      // in order to reduce the number of inserts into the\n      // document, which are expensive.\n      collectionView._bufferedChildren.splice(index, 0, childView);\n    } else {\n      // If we've already rendered the main collection, append\n      // the new child into the correct order if we need to. Otherwise\n      // append to the end.\n      if (!collectionView._insertBefore(childView, index)) {\n        collectionView._insertAfter(childView);\n      }\n    }\n  },\n\n  // Internal method. Check whether we need to insert the view into the correct position.\n  _insertBefore(childView, index) {\n    let currentView;\n    const findPosition = this.sort && (index < this.children.length - 1);\n    if (findPosition) {\n      // Find the view after this one\n      currentView = _.find(this.children._views, (view) => {\n        return view._index === index + 1;\n      });\n    }\n\n    if (currentView) {\n      this.beforeEl(currentView.el, childView.el);\n      return true;\n    }\n\n    return false;\n  },\n\n  // Override to handle DOM inserting differently\n  beforeEl(el, siblings) {\n    this.$(el).before(siblings);\n  },\n\n  // Internal method. Append a view to the end of the $el\n  _insertAfter(childView) {\n    this.Dom.appendContents(this.el, childView.el, {_$el: this.$el, _$contents: childView.$el});\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren(options) {\n    if (!this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.children._updateLength();\n    this.triggerMethod('destroy:children', this);\n  },\n\n  // Return true if the given child should be shown. Return false otherwise.\n  // The filter will be passed (child, index, collection), where\n  //  'child' is the given model\n  //  'index' is the index of that model in the collection\n  //  'collection' is the collection referenced by this CollectionView\n  _shouldAddChild(child, index) {\n    const filter = this.filter;\n    return !_.isFunction(filter) || filter.call(this, child, index, this.collection);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function() {\n  this._init();\n};\n\nemulateCollection(Container.prototype, '_views');\n\nfunction stringComparator(comparator, view) {\n  return view.model && view.model.get(comparator);\n}\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  // Initializes an empty container\n  _init() {\n    this._views = [];\n    this._viewsByCid = {};\n    this._indexByModel = {};\n    this._updateLength();\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Additionally it stores\n  // the view by index in the _views array\n  _add(view, index = this._views.length) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._viewsByCid[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // add to end by default\n    this._views.splice(index, 0, view);\n\n    this._updateLength();\n  },\n\n  // Sort (mutate) and return the array of the child views.\n  _sort(comparator, context) {\n    if (typeof comparator === 'string') {\n      comparator = _.partial(stringComparator, comparator);\n      return this._sortBy(comparator);\n    }\n\n    if (comparator.length === 1) {\n      return this._sortBy(_.bind(comparator, context));\n    }\n\n    return this._views.sort(_.bind(comparator, context));\n  },\n\n  // Makes `_.sortBy` mutate the array to match `this._views.sort`\n  _sortBy(comparator) {\n    const sortedViews = _.sortBy(this._views, comparator);\n\n    this._set(sortedViews);\n\n    return sortedViews;\n  },\n\n  // Replace array contents without overwriting the reference.\n  _set(views) {\n    this._views.length = 0;\n\n    this._views.push.apply(this._views, views.slice(0));\n\n    this._updateLength();\n  },\n\n  // Swap views by index\n  _swap(view1, view2) {\n    const view1Index = this.findIndexByView(view1);\n    const view2Index = this.findIndexByView(view2);\n\n    if (view1Index === -1 || view2Index === -1) {\n      return;\n    }\n\n    const swapView = this._views[view1Index];\n    this._views[view1Index] = this._views[view2Index];\n    this._views[view2Index] = swapView;\n  },\n\n  // Find a view by the model that was attached to it.\n  // Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to it.\n  // Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by index.\n  findByIndex(index) {\n    return this._views[index];\n  },\n\n  // Find the index of a view instance\n  findIndexByView(view) {\n    return this._views.indexOf(view);\n  },\n\n  // Retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._viewsByCid[cid];\n  },\n\n  hasView(view) {\n    return !!this.findByCid(view.cid);\n  },\n\n  // Remove a view and clean up index references.\n  _remove(view) {\n    if (!this._viewsByCid[view.cid]) {\n      return;\n    }\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // remove the view from the container\n    delete this._viewsByCid[view.cid];\n\n    const index = this.findIndexByView(view);\n    this._views.splice(index, 1);\n\n    this._updateLength();\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = this._views.length;\n  }\n});\n\nexport default Container;\n","// Next Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './next-child-view-container';\nimport MarionetteError from './error';\nimport Region from './region';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'emptyView',\n  'emptyViewOptions',\n  'events',\n  'modelEvents',\n  'sortWithCollection',\n  'triggers',\n  'ui',\n  'viewComparator',\n  'viewFilter'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n  // flag for maintaining the sorted order of the collection\n  sortWithCollection: true,\n\n  // constructor\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this.once('render', this._initialEvents);\n\n    // This children container isn't really used by a render, but it provides\n    // the ability to check `this.children.length` prior to rendering\n    // It also allows for cases where only addChildView is used\n    this._initChildViewStorage();\n    this._initBehaviors();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    // Init empty region\n    this.getEmptyRegion();\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // Create an region to show the emptyView\n  getEmptyRegion() {\n    if (this._emptyRegion && !this._emptyRegion.isDestroyed()) {\n      return this._emptyRegion;\n    }\n\n    this._emptyRegion = new Region({ el: this.el, replaceElement: false });\n\n    this._emptyRegion._parentView = this;\n\n    return this._emptyRegion;\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    this.listenTo(this.collection, {\n      'sort': this._onCollectionSort,\n      'reset': this._onCollectionReset,\n      'update': this._onCollectionUpdate\n    });\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will re-sort.\n  _onCollectionSort(collection, { add, merge, remove }) {\n    if (!this.sortWithCollection || this.viewComparator === false) {\n      return;\n    }\n\n    // If the data is changing we will handle the sort later in `_onCollectionUpdate`\n    if (add || remove || merge) {\n      return;\n    }\n\n    // If the only thing happening here is sorting, sort.\n    this.sort();\n  },\n\n  _onCollectionReset() {\n    this.render();\n  },\n\n  // Handle collection update model additions and  removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n\n    // Remove first since it'll be a shorter array lookup.\n    const removedViews = changes.removed.length && this._removeChildModels(changes.removed);\n\n    this._addedViews = changes.added.length && this._addChildModels(changes.added);\n\n    this._detachChildren(removedViews);\n\n    this._showChildren();\n\n    // Destroy removed child views after all of the render is complete\n    this._removeChildViews(removedViews);\n  },\n\n  _removeChildModels(models) {\n    return _.reduce(models, (views, model) => {\n      const removeView = this._removeChildModel(model);\n\n      if (removeView) { views.push(removeView); }\n\n      return views;\n    }, []);\n  },\n\n  _removeChildModel(model) {\n    const view = this.children.findByModel(model);\n\n    if (view) { this._removeChild(view); }\n\n    return view;\n  },\n\n  _removeChild(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Added views are returned for consistency with _removeChildModels\n  _addChildModels(models) {\n    return _.map(models, _.bind(this._addChildModel, this));\n  },\n\n  _addChildModel(model) {\n    const view = this._createChildView(model);\n\n    this._addChild(view);\n\n    return view;\n  },\n\n  _createChildView(model) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n\n    return view;\n  },\n\n  _addChild(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n\n    this._setupChildView(view);\n    this.children._add(view, index);\n\n    this.triggerMethod('add:child', this, view);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  _getChildViewOptions(child) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Build a `childView` for a model in the collection.\n  // Override to customize the build\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other\n    // than through the CollectionView.\n    // If this happens we need to remove the reference to the view\n    // since once a view has been destroyed we can not reuse it.\n    view.on('destroy', this.removeChildView, this);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n  },\n\n  // used by ViewMixin's `_childViewEventHandler`\n  _getImmediateChildren() {\n    return this.children._views;\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n\n    this._destroyChildren();\n\n    // After all children have been destroyed re-init the container\n    this.children._init();\n\n    if (this.collection) {\n      this._addChildModels(this.collection.models);\n    }\n\n    this._showChildren();\n\n    this._isRendered = true;\n\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // Sorts the children then filters and renders the results.\n  sort() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    this._showChildren();\n\n    return this;\n  },\n\n  _showChildren() {\n    if (this.isEmpty()) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._sortChildren();\n\n    this.filter();\n  },\n\n  // Returns true if the collectionView is considered empty.\n  // This is called twice during a render. Once to check the data,\n  // and again when views are filtered. Override this function to\n  // customize what empty means.\n  isEmpty(allViewsFiltered) {\n    return allViewsFiltered || !this.children.length;\n  },\n\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (!EmptyView) {\n      return;\n    }\n\n    const options = this._getEmptyViewOptions();\n\n    const emptyRegion = this.getEmptyRegion();\n\n    emptyRegion.show(new EmptyView(options));\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Remove the emptyView\n  _destroyEmptyView() {\n    const emptyRegion = this.getEmptyRegion();\n    // Only empty if a view is show so the region\n    // doesn't detach any other unrelated HTML\n    if (emptyRegion.hasView()) {\n      emptyRegion.empty();\n    }\n  },\n\n  //\n  _getEmptyViewOptions() {\n    const emptyViewOptions = this.emptyViewOptions || this.childViewOptions;\n\n    if (_.isFunction(emptyViewOptions)) {\n      return emptyViewOptions.call(this);\n    }\n\n    return emptyViewOptions;\n  },\n\n  // Sorts views by viewComparator and sets the children to the new order\n  _sortChildren() {\n    let viewComparator = this.getComparator();\n\n    if (!viewComparator) { return; }\n\n    // If children are sorted prevent added to end perf\n    delete this._addedViews;\n\n    this.triggerMethod('before:sort', this);\n\n    this.children._sort(viewComparator, this);\n\n    this.triggerMethod('sort', this);\n  },\n\n  // Sets the view's `viewComparator` and applies the sort if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setComparator(comparator, {preventRender} = {}) {\n    const comparatorChanged = this.viewComparator !== comparator;\n    const shouldSort = comparatorChanged && !preventRender;\n\n    this.viewComparator = comparator;\n\n    if (shouldSort) {\n      this.sort();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewComparator` and follows the same rules for rendering as `setComparator`.\n  removeComparator(options) {\n    return this.setComparator(null, options);\n  },\n\n  // If viewComparator is overriden it will be returned here.\n  // Additionally override this function to provide custom\n  // viewComparator logic\n  getComparator() {\n    if (this.viewComparator) { return this.viewComparator }\n\n    if (!this.sortWithCollection || this.viewComparator === false || !this.collection) {\n      return false;\n    }\n\n    return this._viewComparator;\n  },\n\n  // Default internal view comparator that order the views by\n  // the order of the collection\n  _viewComparator(view) {\n    return this.collection.indexOf(view.model);\n  },\n\n  // This method re-filters the children views and re-renders the results\n  filter() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    const filteredViews = this._filterChildren();\n\n    this._renderChildren(filteredViews);\n\n    return this;\n  },\n\n  _filterChildren() {\n    const viewFilter = this._getFilter();\n    const addedViews = this._addedViews;\n\n    delete this._addedViews;\n\n    if (!viewFilter) {\n      if (addedViews) { return addedViews; }\n\n      return this.children._views;\n    }\n\n    this.triggerMethod('before:filter', this);\n\n    const attachViews = [];\n    const detachViews = [];\n\n    _.each(this.children._views, (view, key, children) => {\n      (viewFilter.call(this, view, key, children) ? attachViews : detachViews).push(view);\n    });\n\n    this._detachChildren(detachViews);\n\n    this.triggerMethod('filter', this, attachViews, detachViews);\n\n    return attachViews;\n  },\n\n  // This method returns a function for the viewFilter\n  _getFilter() {\n    const viewFilter = this.getFilter();\n\n    if (!viewFilter) { return false; }\n\n    if (_.isFunction(viewFilter)) {\n      return viewFilter;\n    }\n\n    // Support filter predicates `{ fooFlag: true }`\n    if (_.isObject(viewFilter)) {\n      const matcher = _.matches(viewFilter);\n      return function(view) {\n        return matcher(view.model && view.model.attributes);\n      };\n    }\n\n    // Filter by model attribute\n    if (_.isString(viewFilter)) {\n      return function(view) {\n        return view.model && view.model.get(viewFilter);\n      };\n    }\n\n    throw new MarionetteError({\n      name: 'InvalidViewFilterError',\n      message: '\"viewFilter\" must be a function, predicate object literal, a string indicating a model attribute, or falsy'\n    });\n  },\n\n  // Override this function to provide custom\n  // viewFilter logic\n  getFilter() {\n    return this.viewFilter;\n  },\n\n  // Sets the view's `viewFilter` and applies the filter if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setFilter(filter, {preventRender} = {}) {\n    const filterChanged = this.viewFilter !== filter;\n    const shouldRender = filterChanged && !preventRender;\n\n    this.viewFilter = filter;\n\n    if (shouldRender) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewFilter` and follows the same rules for rendering as `setFilter`.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  _detachChildren(detachingViews) {\n    _.each(detachingViews, _.bind(this._detachChildView, this));\n  },\n\n  _detachChildView(view) {\n    const shouldTriggerDetach = view._isAttached && this.monitorViewEvents !== false;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    this.detachHtml(view);\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the collectionView detaches a child view\n  detachHtml(view) {\n    this.Dom.detachEl(view.el, view.$el);\n  },\n\n  _renderChildren(views) {\n    if (this.isEmpty(!views.length)) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._destroyEmptyView();\n\n    this.triggerMethod('before:render:children', this, views);\n\n    const els = this._getBuffer(views);\n\n    this._attachChildren(els, views);\n\n    this.triggerMethod('render:children', this, views);\n  },\n\n  _attachChildren(els, views) {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n\n    views = shouldTriggerAttach ? views : [];\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      triggerMethodOn(view, 'before:attach', view);\n    });\n\n    this.attachHtml(els);\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    });\n  },\n\n  // Renders each view in children and creates a fragment buffer from them\n  _getBuffer(views) {\n    const elBuffer = this.Dom.createBuffer();\n\n    _.each(views, view => {\n      renderView(view);\n      this.Dom.appendContents(elBuffer, view.el, {_$contents: view.$el});\n    });\n\n    return elBuffer;\n  },\n\n  // Override this method to do something other than `.append`.\n  // You can attach any HTML at this point including the els.\n  attachHtml(els) {\n    this.Dom.appendContents(this.el, els, {_$el: this.$el});\n  },\n\n  swapChildViews(view1, view2) {\n    if (!this.children.hasView(view1) || !this.children.hasView(view2)) {\n      throw new MarionetteError({\n        name: 'ChildSwapError',\n        message: 'Both views must be children of the collection view'\n      });\n    }\n\n    this.children._swap(view1, view2);\n    this.Dom.swapEl(view1.el, view2.el);\n\n    // If the views are not filtered the same, refilter\n    if (this.Dom.hasEl(this.el, view1.el) !== this.Dom.hasEl(this.el, view2.el)) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index, based on the current sort\n  addChildView(view, index) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    // Only cache views if added to the end\n    if (!index || index >= this.children.length) {\n      this._addedViews = [view];\n    }\n    this._addChild(view, index);\n    this._showChildren();\n\n    return view;\n  },\n\n  // Detach a view from the children.  Best used when adding a\n  // childView from `addChildView`\n  detachChildView(view) {\n    this.removeChildView(view, { shouldDetach: true });\n\n    return view;\n  },\n\n  // Remove the child view and destroy it.  Best used when adding a\n  // childView from `addChildView`\n  // The options argument is for internal use only\n  removeChildView(view, options) {\n    if (!view) {\n      return view;\n    }\n\n    this._removeChildView(view, options);\n\n    this._removeChild(view);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n\n    return view;\n  },\n\n  _removeChildViews(views) {\n    _.each(views, _.bind(this._removeChildView, this));\n  },\n\n  _removeChildView(view, {shouldDetach} = {}) {\n    view.off('destroy', this.removeChildView, this);\n\n    if (shouldDetach) {\n      this._detachChildView(view);\n    } else {\n      this._destroyChildView(view);\n    }\n\n    this.stopListening(view);\n  },\n\n  _destroyChildView(view) {\n    if (view._isDestroyed) {\n      return;\n    }\n\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n    const emptyRegion = this.getEmptyRegion();\n    emptyRegion.destroy();\n    delete this._addedViews;\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren() {\n    if (!this.children || !this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    if (this.monitorViewEvents === false) {\n      this.Dom.detachContents(this.el, this.$el);\n    }\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.triggerMethod('destroy:children', this);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","// Composite View\n// --------------\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport MarionetteError from './error';\nimport CollectionView from './collection-view';\nimport View from './view';\n\nconst ClassOptions = [\n  'childViewContainer',\n  'template',\n  'templateContext'\n];\n\n// Used for rendering a branch-leaf, hierarchical structure.\n// Extends directly from CollectionView\n// @deprecated\nconst CompositeView = CollectionView.extend({\n\n  // Setting up the inheritance chain which allows changes to\n  // Marionette.CollectionView.prototype.constructor which allows overriding\n  // option to pass '{sort: false}' to prevent the CompositeView from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  constructor(options) {\n    deprecate('CompositeView is deprecated. Convert to View at your earliest convenience');\n\n    this.mergeOptions(options, ClassOptions);\n\n    CollectionView.prototype.constructor.apply(this, arguments);\n  },\n\n  // Configured the initial events that the composite view\n  // binds to. Override this method to prevent the initial\n  // events, or to add your own initial events.\n  _initialEvents() {\n\n    // Bind only after composite view is rendered to avoid adding child views\n    // to nonexistent childViewContainer\n\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.renderChildren);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Retrieve the `childView` to be used when rendering each of\n  // the items in the collection. The default is to return\n  // `this.childView` or Marionette.CompositeView if no `childView`\n  // has been defined. As happens in CollectionView, `childView` can\n  // be a function (which should return a view class).\n  _getChildView(child) {\n    let childView = this.childView;\n\n    // for CompositeView, if `childView` is not specified, we'll get the same\n    // composite view class rendered for each child in the collection\n    // then check if the `childView` is a view class (the common case)\n    // finally check if it's a function (which we assume that returns a view class)\n    if (!childView) {\n      return this.constructor;\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // Return the serialized model\n  serializeData() {\n    return this.serializeModel();\n  },\n\n  // Renders the model and the collection.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this._isRendering = true;\n    this.resetChildViewContainer();\n\n    this.triggerMethod('before:render', this);\n\n    this._renderTemplate();\n    this.bindUIElements();\n    this.renderChildren();\n\n    this._isRendering = false;\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  renderChildren() {\n    if (this._isRendered || this._isRendering) {\n      CollectionView.prototype._renderChildren.call(this);\n    }\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(compositeView, buffer) {\n    const $container = this.getChildViewContainer(compositeView);\n    this.Dom.appendContents($container[0], buffer, {_$el: $container});\n  },\n\n  // Internal method. Append a view to the end of the $el.\n  // Overidden from CollectionView to ensure view is appended to\n  // childViewContainer\n  _insertAfter(childView) {\n    const $container = this.getChildViewContainer(this, childView);\n    this.Dom.appendContents($container[0], childView.el, {_$el: $container, _$contents: childView.$el});\n  },\n\n  // Internal method. Append reordered childView'.\n  // Overidden from CollectionView to ensure reordered views\n  // are appended to childViewContainer\n  _appendReorderedChildren(children) {\n    const $container = this.getChildViewContainer(this);\n    this.Dom.appendContents($container[0], children, {_$el: $container});\n  },\n\n  // Internal method to ensure an `$childViewContainer` exists, for the\n  // `attachHtml` method to use.\n  getChildViewContainer(containerView, childView) {\n    if (!!containerView.$childViewContainer) {\n      return containerView.$childViewContainer;\n    }\n\n    let container;\n    const childViewContainer = containerView.childViewContainer;\n    if (childViewContainer) {\n\n      const selector = _.result(containerView, 'childViewContainer');\n\n      if (selector.charAt(0) === '@' && containerView.ui) {\n        container = containerView.ui[selector.substr(4)];\n      } else {\n        container = this.$(selector);\n      }\n\n      if (container.length <= 0) {\n        throw new MarionetteError({\n          name: 'ChildViewContainerMissingError',\n          message: `The specified \"childViewContainer\" was not found: ${containerView.childViewContainer}`\n        });\n      }\n\n    } else {\n      container = containerView.$el;\n    }\n\n    containerView.$childViewContainer = container;\n    return container;\n  },\n\n  // Internal method to reset the `$childViewContainer` on render\n  resetChildViewContainer() {\n    if (this.$childViewContainer) {\n      this.$childViewContainer = undefined;\n    }\n  }\n});\n\n// To prevent duplication but allow the best View organization\n// Certain View methods are mixed directly into the deprecated CompositeView\nconst MixinFromView = _.pick(View.prototype, 'serializeModel', 'getTemplate', '_renderTemplate', '_renderHtml', 'mixinTemplateContext', 'attachElContent');\n_.extend(CompositeView.prototype, MixinFromView);\n\nexport default CompositeView;\n","// Behavior\n// --------\n\n// A Behavior is an isolated set of DOM /\n// user interactions that can be mixed into any View.\n// Behaviors allow you to blackbox View specific interactions\n// into portable logical chunks, keeping your views simple and your code DRY.\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport getNamespacedEventName from './utils/get-namespaced-event-name';\nimport MarionetteObject from './object';\nimport DelegateEntityEventsMixin from './mixins/delegate-entity-events';\nimport TriggersMixin from './mixins/triggers';\nimport UIMixin from './mixins/ui';\n\nconst ClassOptions = [\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'triggers',\n  'ui'\n];\n\nconst Behavior = MarionetteObject.extend({\n  cidPrefix: 'mnb',\n\n  constructor(options, view) {\n    // Setup reference to the view.\n    // this comes in handle when a behavior\n    // wants to directly talk up the chain\n    // to the view.\n    this.view = view;\n\n    if (this.defaults) {\n      deprecate('Behavior defaults are deprecated. For similar functionality set options on the Behavior class.');\n    }\n\n    this.defaults = _.clone(_.result(this, 'defaults', {}));\n\n    this._setOptions(_.extend({}, this.defaults, options));\n    this.mergeOptions(this.options, ClassOptions);\n\n    // Construct an internal UI hash using\n    // the behaviors UI hash and then the view UI hash.\n    // This allows the user to use UI hash elements\n    // defined in the parent view as well as those\n    // defined in the given behavior.\n    // This order will help the reuse and share of a behavior\n    // between multiple views, while letting a view override a\n    // selector under an UI key.\n    this.ui = _.extend({}, _.result(this, 'ui'), _.result(view, 'ui'));\n\n    MarionetteObject.apply(this, arguments);\n  },\n\n  // proxy behavior $ method to the view\n  // this is useful for doing jquery DOM lookups\n  // scoped to behaviors view.\n  $() {\n    return this.view.$.apply(this.view, arguments);\n  },\n\n  // Stops the behavior from listening to events.\n  // Overrides Object#destroy to prevent additional events from being triggered.\n  destroy() {\n    this.stopListening();\n\n    this.view._removeBehavior(this);\n\n    return this;\n  },\n\n  proxyViewProperties() {\n    this.$el = this.view.$el;\n    this.el = this.view.el;\n\n    return this;\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n\n    return this;\n  },\n\n  unbindUIElements() {\n    this._unbindUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  getEvents() {\n    // Normalize behavior events hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorEvents = this.normalizeUIKeys(_.result(this, 'events'));\n\n    // binds the handler to the behavior and builds a unique eventName\n    return _.reduce(behaviorEvents, (events, behaviorHandler, key) => {\n      if (!_.isFunction(behaviorHandler)) {\n        behaviorHandler = this[behaviorHandler];\n      }\n      if (!behaviorHandler) { return events; }\n      key = getNamespacedEventName(key, this.cid);\n      events[key] = _.bind(behaviorHandler, this);\n      return events;\n    }, {});\n  },\n\n  // Internal method to build all trigger handlers for a given behavior\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Normalize behavior triggers hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorTriggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    return this._getViewTriggers(this.view, behaviorTriggers);\n  }\n\n});\n\n_.extend(Behavior.prototype, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default Behavior;\n","// Application\n// -----------\nimport buildRegion from './common/build-region';\nimport MarionetteObject from './object';\nimport Region from './region';\n\nconst ClassOptions = [\n  'region',\n  'regionClass'\n];\n\n// A container for a Marionette application.\nconst Application = MarionetteObject.extend({\n  cidPrefix: 'mna',\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    this._initRegion();\n\n    MarionetteObject.prototype.constructor.apply(this, arguments);\n  },\n\n  regionClass: Region,\n\n  _initRegion() {\n    const region = this.region;\n\n    if (!region) { return; }\n\n    const defaults = {\n      regionClass: this.regionClass\n    };\n\n    this._region = buildRegion(region, defaults);\n  },\n\n  getRegion() {\n    return this._region;\n  },\n\n  showView(view, ...args) {\n    const region = this.getRegion();\n    return region.show(view, ...args);\n  },\n\n  getView() {\n    return this.getRegion().currentView;\n  },\n\n  // kick off all of the application's processes.\n  start(options) {\n    this.triggerMethod('before:start', this, options);\n    this.triggerMethod('start', this, options);\n    return this;\n  }\n\n});\n\nexport default Application;\n","// App Router\n// ----------\n\n// Reduce the boilerplate code of handling route events\n// and then calling a single method on another object,\n// called a controller.\n// Have your routers configured to call the method on\n// your controller, directly.\n//\n// Configure an AppRouter with `appRoutes`.\n//\n// App routers can only take one `controller` object.\n// It is recommended that you divide your controller\n// objects in to smaller pieces of related functionality\n// and have multiple routers / controllers, instead of\n// just one giant router and controller.\n//\n// You can also add standard routes to an AppRouter.\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from './common/trigger-method';\nimport MarionetteError from './error';\nimport CommonMixin from './mixins/common';\n\nconst ClassOptions = [\n  'appRoutes',\n  'controller'\n];\n\nconst AppRouter = Backbone.Router.extend({\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    Backbone.Router.apply(this, arguments);\n\n    const appRoutes = this.appRoutes;\n    const controller = this._getController();\n    this.processAppRoutes(controller, appRoutes);\n    this.on('route', this._processOnRoute, this);\n  },\n\n  // Similar to route method on a Backbone Router but\n  // method is called on the controller\n  appRoute(route, methodName) {\n    const controller = this._getController();\n    this._addAppRoute(controller, route, methodName);\n    return this;\n  },\n\n  // process the route event and trigger the onRoute\n  // method call, if it exists\n  _processOnRoute(routeName, routeArgs) {\n    // make sure an onRoute before trying to call it\n    if (_.isFunction(this.onRoute)) {\n      // find the path that matches the current route\n      const routePath = _.invert(this.appRoutes)[routeName];\n      this.onRoute(routeName, routePath, routeArgs);\n    }\n  },\n\n  // Internal method to process the `appRoutes` for the\n  // router, and turn them in to routes that trigger the\n  // specified method on the specified `controller`.\n  processAppRoutes(controller, appRoutes) {\n    if (!appRoutes) { return this; }\n\n    const routeNames = _.keys(appRoutes).reverse(); // Backbone requires reverted order of routes\n\n    _.each(routeNames, route => {\n      this._addAppRoute(controller, route, appRoutes[route]);\n    });\n\n    return this;\n  },\n\n  _getController() {\n    return this.controller;\n  },\n\n  _addAppRoute(controller, route, methodName) {\n    const method = controller[methodName];\n\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was not found on the controller`);\n    }\n\n    this.route(route, methodName, _.bind(method, controller));\n  },\n\n  triggerMethod: triggerMethod\n});\n\n_.extend(AppRouter.prototype, CommonMixin);\n\nexport default AppRouter;\n","import MarionetteError from '../error';\n\n// Placeholder method to be extended by the user.\n// The method should define the object that stores the behaviors.\n// i.e.\n//\n// ```js\n// Marionette.Behaviors.behaviorsLookup: function() {\n//   return App.Behaviors\n// }\n// ```\nexport default function behaviorsLookup() {\n  throw new MarionetteError({\n    message: 'You must define where your behaviors are stored.',\n    url: 'marionette.behaviors.md#behaviorslookup'\n  });\n}\n","import Backbone from 'backbone';\nimport {version} from '../package.json';\n\nimport proxy from './utils/proxy';\nimport extend from './utils/extend';\nimport deprecate from './utils/deprecate';\n\nimport isNodeAttached from './common/is-node-attached';\nimport mergeOptions from './common/merge-options';\nimport getOption from './common/get-option';\nimport normalizeMethods from './common/normalize-methods';\nimport monitorViewEvents from './common/monitor-view-events';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from './common/bind-events';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from './common/bind-requests';\n\nimport {\n  triggerMethod,\n  triggerMethodOn\n} from './common/trigger-method';\n\n\nimport MarionetteObject from './object';\nimport TemplateCache from './template-cache';\nimport View from './view';\nimport CollectionView from './collection-view';\nimport NextCollectionView from './next-collection-view';\nimport CompositeView from './composite-view';\nimport Behavior from './behavior';\nimport Region from './region';\nimport Application from './application';\nimport AppRouter from './app-router';\nimport MarionetteError from './error';\n\nimport behaviorsLookup from './config/behaviors-lookup';\nimport DomApi from './config/dom';\nimport Renderer from './config/renderer';\n\nimport {\n  FEATURES,\n  isEnabled,\n  setEnabled\n} from './config/features';\n\nconst previousMarionette = Backbone.Marionette;\nconst Marionette = Backbone.Marionette = {};\n\n// This allows you to run multiple instances of Marionette on the same\n// webapp. After loading the new version, call `noConflict()` to\n// get a reference to it. At the same time the old version will be\n// returned to Backbone.Marionette.\nMarionette.noConflict = function() {\n  Backbone.Marionette = previousMarionette;\n  return this;\n};\n\n// Utilities\nMarionette.bindEvents = proxy(bindEvents);\nMarionette.unbindEvents = proxy(unbindEvents);\nMarionette.bindRequests = proxy(bindRequests);\nMarionette.unbindRequests = proxy(unbindRequests);\nMarionette.mergeOptions = proxy(mergeOptions);\nMarionette.getOption = proxy(getOption);\nMarionette.normalizeMethods = proxy(normalizeMethods);\nMarionette.extend = extend;\nMarionette.isNodeAttached = isNodeAttached;\nMarionette.deprecate = deprecate;\nMarionette.triggerMethod = proxy(triggerMethod);\nMarionette.triggerMethodOn = triggerMethodOn;\nMarionette.isEnabled = isEnabled;\nMarionette.setEnabled = setEnabled;\nMarionette.monitorViewEvents = monitorViewEvents;\n\nMarionette.Behaviors = {};\nMarionette.Behaviors.behaviorsLookup = behaviorsLookup;\n\n// Classes\nMarionette.Application = Application;\nMarionette.AppRouter = AppRouter;\nMarionette.Renderer = Renderer;\nMarionette.TemplateCache = TemplateCache;\nMarionette.View = View;\nMarionette.CollectionView = CollectionView;\nMarionette.NextCollectionView = NextCollectionView;\nMarionette.CompositeView = CompositeView;\nMarionette.Behavior = Behavior;\nMarionette.Region = Region;\nMarionette.Error = MarionetteError;\nMarionette.Object = MarionetteObject;\n\n// Configuration\nMarionette.DEV_MODE = false;\nMarionette.FEATURES = FEATURES;\nMarionette.VERSION = version;\nMarionette.DomApi = DomApi;\nMarionette.setDomApi = function(mixin) {\n  CollectionView.setDomApi(mixin);\n  CompositeView.setDomApi(mixin);\n  NextCollectionView.setDomApi(mixin);\n  Region.setDomApi(mixin);\n  View.setDomApi(mixin);\n};\n\nexport default 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\ No newline at end of file
diff --git a/lib/backbone.marionette.js b/lib/backbone.marionette.js
index 17394cd522..57e663e416 100644
--- a/lib/backbone.marionette.js
+++ b/lib/backbone.marionette.js
@@ -2,7 +2,7 @@
 * @license
 * MarionetteJS (Backbone.Marionette)
 * ----------------------------------
-* v3.5.0
+* v3.5.1
 *
 * Copyright (c)2017 Derick Bailey, Muted Solutions, LLC.
 * Distributed under MIT license
@@ -21,7 +21,7 @@ Backbone = Backbone && Backbone.hasOwnProperty('default') ? Backbone['default']
 _ = _ && _.hasOwnProperty('default') ? _['default'] : _;
 Radio = Radio && Radio.hasOwnProperty('default') ? Radio['default'] : Radio;
 
-var version = "3.5.0";
+var version = "3.5.1";
 
 //Internal utility for creating context style global utils
 var proxy = function proxy(method) {
@@ -828,13 +828,19 @@ var BehaviorsMixin = {
 var DelegateEntityEventsMixin = {
   // Handle `modelEvents`, and `collectionEvents` configuration
   _delegateEntityEvents: function _delegateEntityEvents(model, collection) {
-    this._undelegateEntityEvents(model, collection);
-
     var modelEvents = _.result(this, 'modelEvents');
-    bindEvents.call(this, model, modelEvents);
+
+    if (modelEvents) {
+      unbindEvents.call(this, model, modelEvents);
+      bindEvents.call(this, model, modelEvents);
+    }
 
     var collectionEvents = _.result(this, 'collectionEvents');
-    bindEvents.call(this, collection, collectionEvents);
+
+    if (collectionEvents) {
+      unbindEvents.call(this, collection, collectionEvents);
+      bindEvents.call(this, collection, collectionEvents);
+    }
   },
   _undelegateEntityEvents: function _undelegateEntityEvents(model, collection) {
     var modelEvents = _.result(this, 'modelEvents');
diff --git a/lib/backbone.marionette.js.map b/lib/backbone.marionette.js.map
index 4c54eb4d78..69a4c0450d 100644
--- a/lib/backbone.marionette.js.map
+++ b/lib/backbone.marionette.js.map
@@ -1 +1 @@
-{"version":3,"file":"backbone.marionette.js","sources":["src/utils/proxy.js","src/utils/extend.js","src/utils/deprecate.js","src/common/is-node-attached.js","src/common/merge-options.js","src/common/get-option.js","src/common/normalize-methods.js","src/common/trigger-method.js","src/common/monitor-view-events.js","src/error.js","src/common/bind-events.js","src/common/bind-requests.js","src/utils/set-options.js","src/mixins/common.js","src/mixins/radio.js","src/object.js","src/template-cache.js","src/utils/invoke.js","src/mixins/behaviors.js","src/mixins/delegate-entity-events.js","src/utils/get-namespaced-event-name.js","src/config/features.js","src/mixins/triggers.js","src/mixins/ui.js","src/config/dom.js","src/mixins/view.js","src/common/view.js","src/region.js","src/common/build-region.js","src/mixins/regions.js","src/config/renderer.js","src/view.js","src/utils/emulate-collection.js","src/child-view-container.js","src/collection-view.js","src/next-child-view-container.js","src/next-collection-view.js","src/composite-view.js","src/behavior.js","src/application.js","src/app-router.js","src/config/behaviors-lookup.js","src/backbone.marionette.js"],"sourcesContent":["//Internal utility for creating context style global utils\nconst proxy = function(method) {\n  return function(context, ...args) {\n    return method.apply(context, args);\n  };\n};\n\nexport default proxy;\n","// Marionette.extend\n// -----------------\n\nimport Backbone from 'backbone';\n\n// Borrow the Backbone `extend` method so we can use it as needed\nconst extend = Backbone.Model.extend;\n\nexport default extend;\n","/* global console */\n\nimport _ from 'underscore';\n\nimport Marionette from '../backbone.marionette';\n\nconst deprecate = function(message, test) {\n  if (_.isObject(message)) {\n    message = (\n      message.prev + ' is going to be removed in the future. ' +\n      'Please use ' + message.next + ' instead.' +\n      (message.url ? ' See: ' + message.url : '')\n    );\n  }\n\n  if (!Marionette.DEV_MODE) {\n    return;\n  }\n\n  if ((test === undefined || !test) && !deprecate._cache[message]) {\n    deprecate._warn('Deprecation warning: ' + message);\n    deprecate._cache[message] = true;\n  }\n};\n\n/* istanbul ignore next: can't clear console */\ndeprecate._console = typeof console !== 'undefined' ? console : {};\ndeprecate._warn = function() {\n  const warn = deprecate._console.warn || deprecate._console.log || _.noop;\n  return warn.apply(deprecate._console, arguments);\n};\ndeprecate._cache = {};\n\nexport default deprecate;\n","// Marionette.isNodeAttached\n// -------------------------\n\n// Determine if `el` is a child of the document\nconst isNodeAttached = function(el) {\n  return document.documentElement.contains(el && el.parentNode);\n};\n\nexport default isNodeAttached;\n","import _ from 'underscore';\n\n// Merge `keys` from `options` onto `this`\nconst mergeOptions = function(options, keys) {\n  if (!options) { return; }\n\n  _.each(keys, (key) => {\n    const option = options[key];\n    if (option !== undefined) {\n      this[key] = option;\n    }\n  });\n};\n\nexport default mergeOptions;\n","// Marionette.getOption\n// --------------------\n\n// Retrieve an object, function or other value from the\n// object or its `options`, with `options` taking precedence.\nconst getOption = function(optionName) {\n  if (!optionName) { return; }\n  if (this.options && (this.options[optionName] !== undefined)) {\n    return this.options[optionName];\n  } else {\n    return this[optionName];\n  }\n};\n\nexport default getOption;\n","import _ from 'underscore';\n\n// Marionette.normalizeMethods\n// ----------------------\n\n// Pass in a mapping of events => functions or function names\n// and return a mapping of events => functions\nconst normalizeMethods = function(hash) {\n  return _.reduce(hash, (normalizedHash, method, name) => {\n    if (!_.isFunction(method)) {\n      method = this[method];\n    }\n    if (method) {\n      normalizedHash[name] = method;\n    }\n    return normalizedHash;\n  }, {});\n};\n\nexport default normalizeMethods;\n","// Trigger Method\n// --------------\n\nimport _ from 'underscore';\nimport getOption from './get-option';\n\n// split the event name on the \":\"\nconst splitter = /(^|:)(\\w)/gi;\n\n// take the event section (\"section1:section2:section3\")\n// and turn it in to uppercase name onSection1Section2Section3\nfunction getEventName(match, prefix, eventName) {\n  return eventName.toUpperCase();\n}\n\nconst getOnMethodName = _.memoize(function(event) {\n  return 'on' + event.replace(splitter, getEventName);\n});\n\n// Trigger an event and/or a corresponding method name. Examples:\n//\n// `this.triggerMethod(\"foo\")` will trigger the \"foo\" event and\n// call the \"onFoo\" method.\n//\n// `this.triggerMethod(\"foo:bar\")` will trigger the \"foo:bar\" event and\n// call the \"onFooBar\" method.\nexport function triggerMethod(event, ...args) {\n  // get the method name from the event name\n  const methodName = getOnMethodName(event);\n  const method = getOption.call(this, methodName);\n  let result;\n\n  // call the onMethodName if it exists\n  if (_.isFunction(method)) {\n    // pass all args, except the event name\n    result = method.apply(this, args);\n  }\n\n  // trigger the event\n  this.trigger.apply(this, arguments);\n\n  return result;\n}\n\n// triggerMethodOn invokes triggerMethod on a specific context\n//\n// e.g. `Marionette.triggerMethodOn(view, 'show')`\n// will trigger a \"show\" event or invoke onShow the view.\nexport function triggerMethodOn(context, ...args) {\n  if (_.isFunction(context.triggerMethod)) {\n    return context.triggerMethod.apply(context, args);\n  }\n\n  return triggerMethod.apply(context, args);\n}\n","// DOM Refresh\n// -----------\n\nimport _ from 'underscore';\nimport { triggerMethodOn } from './trigger-method';\n\n// Trigger method on children unless a pure Backbone.View\nfunction triggerMethodChildren(view, event, shouldTrigger) {\n  if (!view._getImmediateChildren) { return; }\n  _.each(view._getImmediateChildren(), child => {\n    if (!shouldTrigger(child)) { return; }\n    triggerMethodOn(child, event, child);\n  });\n}\n\nfunction shouldTriggerAttach(view) {\n  return !view._isAttached;\n}\n\nfunction shouldAttach(view) {\n  if (!shouldTriggerAttach(view)) { return false; }\n  view._isAttached = true;\n  return true;\n}\n\nfunction shouldTriggerDetach(view) {\n  return view._isAttached;\n}\n\nfunction shouldDetach(view) {\n  if (!shouldTriggerDetach(view)) { return false; }\n  view._isAttached = false;\n  return true;\n}\n\nfunction triggerDOMRefresh(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:refresh', view);\n  }\n}\n\nfunction triggerDOMRemove(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:remove', view);\n  }\n}\n\nfunction handleBeforeAttach() {\n  triggerMethodChildren(this, 'before:attach', shouldTriggerAttach);\n}\n\nfunction handleAttach() {\n  triggerMethodChildren(this, 'attach', shouldAttach);\n  triggerDOMRefresh(this);\n}\n\nfunction handleBeforeDetach() {\n  triggerMethodChildren(this, 'before:detach', shouldTriggerDetach);\n  triggerDOMRemove(this);\n}\n\nfunction handleDetach() {\n  triggerMethodChildren(this, 'detach', shouldDetach);\n}\n\nfunction handleBeforeRender() {\n  triggerDOMRemove(this);\n}\n\nfunction handleRender() {\n  triggerDOMRefresh(this);\n}\n\n// Monitor a view's state, propagating attach/detach events to children and firing dom:refresh\n// whenever a rendered view is attached or an attached view is rendered.\nfunction monitorViewEvents(view) {\n  if (view._areViewEventsMonitored || view.monitorViewEvents === false) { return; }\n\n  view._areViewEventsMonitored = true;\n\n  view.on({\n    'before:attach': handleBeforeAttach,\n    'attach': handleAttach,\n    'before:detach': handleBeforeDetach,\n    'detach': handleDetach,\n    'before:render': handleBeforeRender,\n    'render': handleRender\n  });\n}\n\nexport default monitorViewEvents;\n","// Error\n// -----\n\nimport _ from 'underscore';\nimport extend from './utils/extend';\nimport {version} from '../package.json';\n\nconst errorProps = ['description', 'fileName', 'lineNumber', 'name', 'message', 'number'];\n\nconst MarionetteError = extend.call(Error, {\n  urlRoot: `http://marionettejs.com/docs/v${version}/`,\n\n  constructor(message, options) {\n    if (_.isObject(message)) {\n      options = message;\n      message = options.message;\n    } else if (!options) {\n      options = {};\n    }\n\n    const error = Error.call(this, message);\n    _.extend(this, _.pick(error, errorProps), _.pick(options, errorProps));\n\n    this.captureStackTrace();\n\n    if (options.url) {\n      this.url = this.urlRoot + options.url;\n    }\n  },\n\n  captureStackTrace() {\n    if (Error.captureStackTrace) {\n      Error.captureStackTrace(this, MarionetteError);\n    }\n  },\n\n  toString() {\n    return this.name + ': ' + this.message + (this.url ? ' See: ' + this.url : '');\n  }\n});\n\nMarionetteError.extend = extend;\n\nexport default MarionetteError;\n","// Bind Entity Events & Unbind Entity Events\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone \"entity\" (e.g. collection/model)\n// to methods on a target object.\n//\n// The first parameter, `target`, must have the Backbone.Events module mixed in.\n//\n// The second parameter is the `entity` (Backbone.Model, Backbone.Collection or\n// any object that has Backbone.Events mixed in) to bind the events from.\n//\n// The third parameter is a hash of { \"event:name\": \"eventHandler\" }\n// configuration. Multiple handlers can be separated by a space. A\n// function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\n\n// Bind/unbind the event to handlers specified as a string of\n// handler names on the target object\nfunction bindFromStrings(target, entity, evt, methods, actionName) {\n  const methodNames = methods.split(/\\s+/);\n\n  if (methodNames.length > 1) {\n    deprecate('Multiple handlers for a single event are deprecated. If needed, use a single handler to call multiple methods.')\n  }\n\n  _.each(methodNames, function(methodName) {\n    const method = target[methodName];\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was configured as an event handler, but does not exist.`);\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\n// generic looping function\nfunction iterateEvents(target, entity, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindevents'\n    });\n  }\n\n  // iterate the bindings and bind/unbind them\n  _.each(bindings, function(method, evt) {\n\n    // allow for a list of method names as a string\n    if (_.isString(method)) {\n      bindFromStrings(target, entity, evt, method, actionName);\n      return;\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\nfunction bindEvents(entity, bindings) {\n  if (!entity || !bindings) { return this; }\n\n  iterateEvents(this, entity, bindings, 'listenTo');\n  return this;\n}\n\nfunction unbindEvents(entity, bindings) {\n  if (!entity) { return this; }\n\n  if (!bindings) {\n    this.stopListening(entity);\n    return this;\n  }\n\n  iterateEvents(this, entity, bindings, 'stopListening');\n  return this;\n}\n\n// Export Public API\nexport {\n  bindEvents,\n  unbindEvents\n};\n","// Bind/Unbind Radio Requests\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone.radio request\n// to methods on a target object.\n//\n// The first parameter, `target`, will set the context of the reply method\n//\n// The second parameter is the `Radio.channel` to bind the reply to.\n//\n// The third parameter is a hash of { \"request:name\": \"replyHandler\" }\n// configuration. A function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport normalizeMethods from './normalize-methods';\nimport MarionetteError from '../error';\n\nfunction iterateReplies(target, channel, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindrequests'\n    });\n  }\n\n  const normalizedRadioRequests = normalizeMethods.call(target, bindings);\n\n  channel[actionName](normalizedRadioRequests, target);\n}\n\nfunction bindRequests(channel, bindings) {\n  if (!channel || !bindings) { return this; }\n\n  iterateReplies(this, channel, bindings, 'reply');\n  return this;\n}\n\nfunction unbindRequests(channel, bindings) {\n  if (!channel) { return this; }\n\n  if (!bindings) {\n    channel.stopReplying(null, null, this);\n    return this;\n  }\n\n  iterateReplies(this, channel, bindings, 'stopReplying');\n  return this;\n}\n\nexport {\n  bindRequests,\n  unbindRequests\n};\n","import _ from 'underscore';\n\n// Internal utility for setting options consistently across Mn\nconst setOptions = function(options) {\n  this.options = _.extend({}, _.result(this, 'options'), options);\n};\n\nexport default setOptions;\n","import _setOptions from '../utils/set-options';\nimport getOption from '../common/get-option';\nimport mergeOptions from '../common/merge-options';\nimport normalizeMethods from '../common/normalize-methods';\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nexport default {\n\n  // Imports the \"normalizeMethods\" to transform hashes of\n  // events=>function references/names to a hash of events=>function references\n  normalizeMethods,\n\n  _setOptions,\n\n  // A handy way to merge passed-in options onto the instance\n  mergeOptions,\n\n  // Enable getting options from this or this.options by name.\n  getOption,\n\n  // Enable binding view's events from another entity.\n  bindEvents,\n\n  // Enable unbinding view's events from another entity.\n  unbindEvents\n};\n","import _ from 'underscore';\nimport Radio from 'backbone.radio';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from '../common/bind-requests';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nimport MarionetteError from '../error';\n\n// MixinOptions\n// - channelName\n// - radioEvents\n// - radioRequests\n\nexport default {\n\n  _initRadio() {\n    const channelName = _.result(this, 'channelName');\n\n    if (!channelName) {\n      return;\n    }\n\n    /* istanbul ignore next */\n    if (!Radio) {\n      throw new MarionetteError({\n        name: 'BackboneRadioMissing',\n        message: 'The dependency \"backbone.radio\" is missing.'\n      });\n    }\n\n    const channel = this._channel = Radio.channel(channelName);\n\n    const radioEvents = _.result(this, 'radioEvents');\n    this.bindEvents(channel, radioEvents);\n\n    const radioRequests = _.result(this, 'radioRequests');\n    this.bindRequests(channel, radioRequests);\n\n    this.on('destroy', this._destroyRadio);\n  },\n\n  _destroyRadio() {\n    this._channel.stopReplying(null, null, this);\n  },\n\n  getChannel() {\n    return this._channel;\n  },\n\n  // Proxy `bindEvents`\n  bindEvents: bindEvents,\n\n  // Proxy `unbindEvents`\n  unbindEvents: unbindEvents,\n\n  // Proxy `bindRequests`\n  bindRequests: bindRequests,\n\n  // Proxy `unbindRequests`\n  unbindRequests: unbindRequests\n\n};\n","// Object\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport extend from './utils/extend';\nimport { triggerMethod } from './common/trigger-method';\nimport CommonMixin from './mixins/common';\nimport RadioMixin from './mixins/radio';\n\nconst ClassOptions = [\n  'channelName',\n  'radioEvents',\n  'radioRequests'\n];\n\n// A Base Class that other Classes should descend from.\n// Object borrows many conventions and utilities from Backbone.\nconst MarionetteObject = function(options) {\n  if (!this.hasOwnProperty('options')) {\n    this._setOptions(options);\n  }\n  this.mergeOptions(options, ClassOptions);\n  this._setCid();\n  this._initRadio();\n  this.initialize.apply(this, arguments);\n};\n\nMarionetteObject.extend = extend;\n\n// Object Methods\n// --------------\n\n// Ensure it can trigger events with Backbone.Events\n_.extend(MarionetteObject.prototype, Backbone.Events, CommonMixin, RadioMixin, {\n  cidPrefix: 'mno',\n\n  // for parity with Marionette.AbstractView lifecyle\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return this._isDestroyed;\n  },\n\n  //this is a noop method intended to be overridden by classes that extend from this base\n  initialize() {},\n\n  _setCid() {\n    if (this.cid) { return; }\n    this.cid = _.uniqueId(this.cidPrefix);\n  },\n\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:destroy', this, ...args);\n\n    this._isDestroyed = true;\n    this.triggerMethod('destroy', this, ...args);\n    this.stopListening();\n\n    return this;\n  },\n\n  triggerMethod\n});\n\nexport default MarionetteObject;\n","// Template Cache\n// --------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport MarionetteError from './error';\n\n// Manage templates stored in `<script>` blocks,\n// caching them for faster access.\nconst TemplateCache = function(templateId) {\n  this.templateId = templateId;\n};\n\n// TemplateCache object-level methods. Manage the template\n// caches from these method calls instead of creating\n// your own TemplateCache instances\n_.extend(TemplateCache, {\n\n  templateCaches: {},\n\n  // Get the specified template by id. Either\n  // retrieves the cached version, or loads it\n  // from the DOM.\n  get(templateId, options) {\n    let cachedTemplate = this.templateCaches[templateId];\n\n    if (!cachedTemplate) {\n      cachedTemplate = new TemplateCache(templateId);\n      this.templateCaches[templateId] = cachedTemplate;\n    }\n\n    return cachedTemplate.load(options);\n  },\n\n  // Clear templates from the cache. If no arguments\n  // are specified, clears all templates:\n  // `clear()`\n  //\n  // If arguments are specified, clears each of the\n  // specified templates from the cache:\n  // `clear(\"#t1\", \"#t2\", \"...\")`\n  clear(...args) {\n    let i;\n    const length = args.length;\n\n    if (length > 0) {\n      for (i = 0; i < length; i++) {\n        delete this.templateCaches[args[i]];\n      }\n    } else {\n      this.templateCaches = {};\n    }\n  }\n});\n\n// TemplateCache instance methods, allowing each\n// template cache object to manage its own state\n// and know whether or not it has been loaded\n_.extend(TemplateCache.prototype, {\n\n  // Internal method to load the template\n  load(options) {\n    // Guard clause to prevent loading this template more than once\n    if (this.compiledTemplate) {\n      return this.compiledTemplate;\n    }\n\n    // Load the template and compile it\n    const template = this.loadTemplate(this.templateId, options);\n    this.compiledTemplate = this.compileTemplate(template, options);\n\n    return this.compiledTemplate;\n  },\n\n  // Load a template from the DOM, by default. Override\n  // this method to provide your own template retrieval\n  // For asynchronous loading with AMD/RequireJS, consider\n  // using a template-loader plugin as described here:\n  // https://github.com/marionettejs/backbone.marionette/wiki/Using-marionette-with-requirejs\n  loadTemplate(templateId, options) {\n    const $template = Backbone.$(templateId);\n\n    if (!$template.length) {\n      throw new MarionetteError({\n        name: 'NoTemplateError',\n        message: `Could not find template: \"${templateId}\"`\n      });\n    }\n    return $template.html();\n  },\n\n  // Pre-compile the template before caching it. Override\n  // this method if you do not need to pre-compile a template\n  // (JST / RequireJS for example) or if you want to change\n  // the template engine used (Handebars, etc).\n  compileTemplate(rawTemplate, options) {\n    return _.template(rawTemplate, options);\n  }\n});\n\nexport default TemplateCache;\n","// Implementation of the invoke method (http://underscorejs.org/#invoke) with support for\n// lodash v3, v4, and underscore.js\nimport _ from 'underscore';\n\nexport default _.invokeMap || _.invoke;\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport { triggerMethod } from '../common/trigger-method';\nimport Marionette from '../backbone.marionette';\n\n// MixinOptions\n// - behaviors\n\n// Takes care of getting the behavior class\n// given options and a key.\n// If a user passes in options.behaviorClass\n// default to using that.\n// If a user passes in a Behavior Class directly, use that\n// Otherwise delegate the lookup to the users `behaviorsLookup` implementation.\nfunction getBehaviorClass(options, key) {\n  if (options.behaviorClass) {\n    return options.behaviorClass;\n    //treat functions as a Behavior constructor\n  } else if (_.isFunction(options)) {\n    return options;\n  }\n\n  // behaviorsLookup can be either a flat object or a method\n  if (_.isFunction(Marionette.Behaviors.behaviorsLookup)) {\n    return Marionette.Behaviors.behaviorsLookup(options, key)[key];\n  }\n\n  return Marionette.Behaviors.behaviorsLookup[key];\n}\n\n// Iterate over the behaviors object, for each behavior\n// instantiate it and get its grouped behaviors.\n// This accepts a list of behaviors in either an object or array form\nfunction parseBehaviors(view, behaviors) {\n  return _.chain(behaviors).map(function(options, key) {\n    const BehaviorClass = getBehaviorClass(options, key);\n    //if we're passed a class directly instead of an object\n    const _options = options === BehaviorClass ? {} : options;\n    const behavior = new BehaviorClass(_options, view);\n    const nestedBehaviors = parseBehaviors(view, _.result(behavior, 'behaviors'));\n\n    return [behavior].concat(nestedBehaviors);\n  }).flatten().value();\n}\n\nexport default {\n  _initBehaviors() {\n    this._behaviors = this._getBehaviors();\n  },\n\n  _getBehaviors() {\n    const behaviors = _.result(this, 'behaviors');\n\n    // Behaviors defined on a view can be a flat object literal\n    // or it can be a function that returns an object.\n    return _.isObject(behaviors) ? parseBehaviors(this, behaviors) : {};\n  },\n\n  _getBehaviorTriggers() {\n    const triggers = _invoke(this._behaviors, 'getTriggers');\n    return _.reduce(triggers, function(memo, _triggers) {\n      return _.extend(memo, _triggers);\n    }, {});\n  },\n\n  _getBehaviorEvents() {\n    const events = _invoke(this._behaviors, 'getEvents');\n    return _.reduce(events, function(memo, _events) {\n      return _.extend(memo, _events);\n    }, {});\n  },\n\n  // proxy behavior $el to the view's $el.\n  _proxyBehaviorViewProperties() {\n    _invoke(this._behaviors, 'proxyViewProperties');\n  },\n\n  // delegate modelEvents and collectionEvents\n  _delegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'delegateEntityEvents');\n  },\n\n  // undelegate modelEvents and collectionEvents\n  _undelegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'undelegateEntityEvents');\n  },\n\n  _destroyBehaviors(...args) {\n    // Call destroy on each behavior after\n    // destroying the view.\n    // This unbinds event listeners\n    // that behaviors have registered for.\n    _invoke(this._behaviors, 'destroy', ...args);\n  },\n\n  // Remove a behavior\n  _removeBehavior(behavior) {\n    // Don't worry about the clean up if the view is destroyed\n    if (this._isDestroyed) { return; }\n\n    // Remove behavior-only triggers and events\n    this.undelegate(`.trig${ behavior.cid } .${ behavior.cid }`);\n\n    this._behaviors = _.without(this._behaviors, behavior);\n  },\n\n  _bindBehaviorUIElements() {\n    _invoke(this._behaviors, 'bindUIElements');\n  },\n\n  _unbindBehaviorUIElements() {\n    _invoke(this._behaviors, 'unbindUIElements');\n  },\n\n  _triggerEventOnBehaviors() {\n    const behaviors = this._behaviors;\n    // Use good ol' for as this is a very hot function\n    for (let i = 0, length = behaviors && behaviors.length; i < length; i++) {\n      triggerMethod.apply(behaviors[i], arguments);\n    }\n  }\n};\n","import _ from 'underscore';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\n// MixinOptions\n// - collectionEvents\n// - modelEvents\n\nexport default {\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  _delegateEntityEvents(model, collection) {\n    this._undelegateEntityEvents(model, collection);\n\n    const modelEvents = _.result(this, 'modelEvents');\n    bindEvents.call(this, model, modelEvents);\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n    bindEvents.call(this, collection, collectionEvents);\n  },\n\n  _undelegateEntityEvents(model, collection) {\n    const modelEvents = _.result(this, 'modelEvents');\n    unbindEvents.call(this, model, modelEvents);\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n    unbindEvents.call(this, collection, collectionEvents);\n  }\n};\n","// Borrow event splitter from Backbone\nconst delegateEventSplitter = /^(\\S+)\\s*(.*)$/;\n\n// Set event name to be namespaced using a unique index\n// to generate a non colliding event namespace\n// http://api.jquery.com/event.namespace/\nconst getNamespacedEventName = function(eventName, namespace) {\n  const match = eventName.match(delegateEventSplitter);\n  return `${ match[1] }.${ namespace } ${ match[2] }`;\n};\n\nexport default getNamespacedEventName;\n","// Add Feature flags here\n// e.g. 'class' => false\nconst FEATURES = {\n  childViewEventPrefix: true,\n  triggersStopPropagation: true,\n  triggersPreventDefault: true\n};\n\nfunction isEnabled(name) {\n  return !!FEATURES[name];\n}\n\nfunction setEnabled(name, state) {\n  return FEATURES[name] = state;\n}\n\nexport {\n  FEATURES,\n  setEnabled,\n  isEnabled\n};\n","import _ from 'underscore';\nimport getNamespacedEventName from '../utils/get-namespaced-event-name';\nimport { isEnabled } from '../config/features';\n\n// Internal method to create an event handler for a given `triggerDef` like\n// 'click:foo'\nfunction buildViewTrigger(view, triggerDef) {\n  if (_.isString(triggerDef)) {\n    triggerDef = {event: triggerDef};\n  }\n\n  const eventName = triggerDef.event;\n\n  let shouldPreventDefault = !!triggerDef.preventDefault;\n\n  if (isEnabled('triggersPreventDefault')) {\n    shouldPreventDefault = triggerDef.preventDefault !== false;\n  }\n\n  let shouldStopPropagation = !!triggerDef.stopPropagation;\n\n  if (isEnabled('triggersStopPropagation')) {\n    shouldStopPropagation = triggerDef.stopPropagation !== false;\n  }\n\n  return function(event) {\n    if (shouldPreventDefault) {\n      event.preventDefault();\n    }\n\n    if (shouldStopPropagation) {\n      event.stopPropagation();\n    }\n\n    view.triggerMethod(eventName, view, event);\n  };\n}\n\nexport default {\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  _getViewTriggers(view, triggers) {\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return _.reduce(triggers, (events, value, key) => {\n      key = getNamespacedEventName(key, `trig${ this.cid }`);\n      events[key] = buildViewTrigger(view, value);\n      return events;\n    }, {});\n  }\n\n};\n","import _ from 'underscore';\n// allows for the use of the @ui. syntax within\n// a given key for triggers and events\n// swaps the @ui with the associated selector.\n// Returns a new, non-mutated, parsed events hash.\nconst normalizeUIKeys = function(hash, ui) {\n  return _.reduce(hash, (memo, val, key) => {\n    const normalizedKey = normalizeUIString(key, ui);\n    memo[normalizedKey] = val;\n    return memo;\n  }, {});\n};\n\n// utility method for parsing @ui. syntax strings\n// into associated selector\nconst normalizeUIString = function(uiString, ui) {\n  return uiString.replace(/@ui\\.[a-zA-Z-_$0-9]*/g, (r) => {\n    return ui[r.slice(4)];\n  });\n};\n\n// allows for the use of the @ui. syntax within\n// a given value for regions\n// swaps the @ui with the associated selector\nconst normalizeUIValues = function(hash, ui, properties) {\n  _.each(hash, (val, key) => {\n    if (_.isString(val)) {\n      hash[key] = normalizeUIString(val, ui);\n    } else if (_.isObject(val) && _.isArray(properties)) {\n      _.extend(val, normalizeUIValues(_.pick(val, properties), ui));\n      /* Value is an object, and we got an array of embedded property names to normalize. */\n      _.each(properties, (property) => {\n        const propertyVal = val[property];\n        if (_.isString(propertyVal)) {\n          val[property] = normalizeUIString(propertyVal, ui);\n        }\n      });\n    }\n  });\n  return hash;\n};\n\nexport default {\n\n  // normalize the keys of passed hash with the views `ui` selectors.\n  // `{\"@ui.foo\": \"bar\"}`\n  normalizeUIKeys(hash) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIKeys(hash, uiBindings);\n  },\n\n  // normalize the passed string with the views `ui` selectors.\n  // `\"@ui.bar\"`\n  normalizeUIString(uiString) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIString(uiString, uiBindings);\n  },\n\n  // normalize the values of passed hash with the views `ui` selectors.\n  // `{foo: \"@ui.bar\"}`\n  normalizeUIValues(hash, properties) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIValues(hash, uiBindings, properties);\n  },\n\n  _getUIBindings() {\n    const uiBindings = _.result(this, '_uiBindings');\n    const ui = _.result(this, 'ui');\n    return uiBindings || ui;\n  },\n\n  // This method binds the elements specified in the \"ui\" hash inside the view's code with\n  // the associated jQuery selectors.\n  _bindUIElements() {\n    if (!this.ui) { return; }\n\n    // store the ui hash in _uiBindings so they can be reset later\n    // and so re-rendering the view will be able to find the bindings\n    if (!this._uiBindings) {\n      this._uiBindings = this.ui;\n    }\n\n    // get the bindings result, as a function or otherwise\n    const bindings = _.result(this, '_uiBindings');\n\n    // empty the ui so we don't have anything to start with\n    this._ui = {};\n\n    // bind each of the selectors\n    _.each(bindings, (selector, key) => {\n      this._ui[key] = this.$(selector);\n    });\n\n    this.ui = this._ui;\n  },\n\n  _unbindUIElements() {\n    if (!this.ui || !this._uiBindings) { return; }\n\n    // delete all of the existing ui bindings\n    _.each(this.ui, ($el, name) => {\n      delete this.ui[name];\n    });\n\n    // reset the ui element to the original bindings configuration\n    this.ui = this._uiBindings;\n    delete this._uiBindings;\n    delete this._ui;\n  },\n\n  _getUI(name) {\n    return this._ui[name];\n  }\n};\n","// DomApi\n//  ---------\nimport _ from 'underscore';\nimport Backbone from 'backbone';\n\n// Performant method for returning the jQuery instance\nfunction getEl(el) {\n  return el instanceof Backbone.$ ? el : Backbone.$(el);\n}\n\n// Static setter\nexport function setDomApi(mixin) {\n  this.prototype.Dom = _.extend({}, this.prototype.Dom, mixin);\n  return this;\n}\n\nexport default {\n\n  // Returns a new HTML DOM node instance\n  createBuffer() {\n    return document.createDocumentFragment();\n  },\n\n  // Lookup the `selector` string\n  // Selector may also be a DOM element\n  // Returns an array-like object of nodes\n  getEl(selector) {\n    return getEl(selector);\n  },\n\n  // Finds the `selector` string with the el\n  // Returns an array-like object of nodes\n  findEl(el, selector, _$el = getEl(el)) {\n    return _$el.find(selector);\n  },\n\n  // Returns true if the el contains the node childEl\n  hasEl(el, childEl) {\n    return el.contains(childEl && childEl.parentNode);\n  },\n\n  // Detach `el` from the DOM without removing listeners\n  detachEl(el, _$el = getEl(el)) {\n    _$el.detach();\n  },\n\n  // Remove `oldEl` from the DOM and put `newEl` in its place\n  replaceEl(newEl, oldEl) {\n    if (newEl === oldEl) {\n      return;\n    }\n\n    const parent = oldEl.parentNode;\n\n    if (!parent) {\n      return;\n    }\n\n    parent.replaceChild(newEl, oldEl);\n  },\n\n  // Swaps the location of `el1` and `el2` in the DOM\n  swapEl(el1, el2) {\n    if (el1 === el2) {\n      return;\n    }\n\n    const parent1 = el1.parentNode;\n    const parent2 = el2.parentNode;\n\n    if (!parent1 || !parent2) {\n      return;\n    }\n\n    const next1 = el1.nextSibling;\n    const next2 = el2.nextSibling;\n\n    parent1.insertBefore(el2, next1);\n    parent2.insertBefore(el1, next2);\n  },\n\n  // Replace the contents of `el` with the HTML string of `html`\n  setContents(el, html, _$el = getEl(el)) {\n    _$el.html(html);\n  },\n\n  // Takes the DOM node `el` and appends the DOM node `contents`\n  // to the end of the element's contents.\n  appendContents(el, contents, {_$el = getEl(el), _$contents = getEl(contents)} = {}) {\n    _$el.append(_$contents);\n  },\n\n  // Does the el have child nodes\n  hasContents(el) {\n    return !!el && el.hasChildNodes();\n  },\n\n  // Remove the inner contents of `el` from the DOM while leaving\n  // `el` itself in the DOM.\n  detachContents(el, _$el = getEl(el)) {\n    _$el.contents().detach();\n  }\n};\n","// ViewMixin\n//  ---------\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from '../common/trigger-method';\nimport BehaviorsMixin from './behaviors';\nimport CommonMixin from './common';\nimport DelegateEntityEventsMixin from './delegate-entity-events';\nimport TriggersMixin from './triggers';\nimport UIMixin from './ui';\nimport { isEnabled } from '../config/features';\nimport DomApi from '../config/dom';\n\n// MixinOptions\n// - behaviors\n// - childViewEventPrefix\n// - childViewEvents\n// - childViewTriggers\n// - collectionEvents\n// - modelEvents\n// - triggers\n// - ui\n\n\nconst ViewMixin = {\n  Dom: DomApi,\n\n  supportsRenderLifecycle: true,\n  supportsDestroyLifecycle: true,\n\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return !!this._isDestroyed;\n  },\n\n  _isRendered: false,\n\n  isRendered() {\n    return !!this._isRendered;\n  },\n\n  _isAttached: false,\n\n  isAttached() {\n    return !!this._isAttached;\n  },\n\n  // Overriding Backbone.View's `delegateEvents` to handle\n  // `events` and `triggers`\n  delegateEvents(eventsArg) {\n\n    this._proxyBehaviorViewProperties();\n    this._buildEventProxies();\n\n    const viewEvents = this._getEvents(eventsArg);\n\n    if (typeof eventsArg === 'undefined') {\n      this.events = viewEvents;\n    }\n\n    const combinedEvents = _.extend({},\n      this._getBehaviorEvents(),\n      viewEvents,\n      this._getBehaviorTriggers(),\n      this.getTriggers()\n    );\n\n    Backbone.View.prototype.delegateEvents.call(this, combinedEvents);\n\n    return this;\n  },\n\n  _getEvents(eventsArg) {\n    const events = eventsArg || this.events;\n\n    if (_.isFunction(events)) {\n      return this.normalizeUIKeys(events.call(this));\n    }\n\n    return this.normalizeUIKeys(events);\n  },\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Allow `triggers` to be configured as a function\n    const triggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return this._getViewTriggers(this, triggers);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.model, this.collection);\n\n    // bind each behaviors model and collection events\n    this._delegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle unbinding `modelEvents`, and `collectionEvents` configuration\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.model, this.collection);\n\n    // unbind each behaviors model and collection events\n    this._undelegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle destroying the view and its children.\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n    const shouldTriggerDetach = this._isAttached && !this._shouldDisableEvents;\n\n    this.triggerMethod('before:destroy', this, ...args);\n    if (shouldTriggerDetach) {\n      this.triggerMethod('before:detach', this);\n    }\n\n    // unbind UI elements\n    this.unbindUIElements();\n\n    // remove the view from the DOM\n    this._removeElement();\n\n    if (shouldTriggerDetach) {\n      this._isAttached = false;\n      this.triggerMethod('detach', this);\n    }\n\n    // remove children after the remove to prevent extra paints\n    this._removeChildren();\n\n    this._isDestroyed = true;\n    this._isRendered = false;\n\n    // Destroy behaviors after _isDestroyed flag\n    this._destroyBehaviors(...args);\n\n    this.triggerMethod('destroy', this, ...args);\n\n    this.stopListening();\n\n    return this;\n  },\n\n  // Equates to this.$el.remove\n  _removeElement() {\n    this.$el.off().removeData();\n    this.Dom.detachEl(this.el, this.$el);\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n    this._bindBehaviorUIElements();\n\n    return this;\n  },\n\n  // This method unbinds the elements specified in the \"ui\" hash\n  unbindUIElements() {\n    this._unbindUIElements();\n    this._unbindBehaviorUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // used as the prefix for child view events\n  // that are forwarded through the layoutview\n  childViewEventPrefix() {\n    return isEnabled('childViewEventPrefix') ? 'childview' : false;\n  },\n\n  // import the `triggerMethod` to trigger events with corresponding\n  // methods if the method exists\n  triggerMethod() {\n    const ret = triggerMethod.apply(this, arguments);\n\n    this._triggerEventOnBehaviors.apply(this, arguments);\n\n    return ret;\n  },\n\n  // Cache `childViewEvents` and `childViewTriggers`\n  _buildEventProxies() {\n    this._childViewEvents = _.result(this, 'childViewEvents');\n    this._childViewTriggers = _.result(this, 'childViewTriggers');\n  },\n\n  _proxyChildViewEvents(view) {\n    this.listenTo(view, 'all', this._childViewEventHandler);\n  },\n\n  _childViewEventHandler(eventName, ...args) {\n    const childViewEvents = this.normalizeMethods(this._childViewEvents);\n\n    // call collectionView childViewEvent if defined\n    if (typeof childViewEvents !== 'undefined' && _.isFunction(childViewEvents[eventName])) {\n      childViewEvents[eventName].apply(this, args);\n    }\n\n    // use the parent view's proxyEvent handlers\n    const childViewTriggers = this._childViewTriggers;\n\n    // Call the event with the proxy name on the parent layout\n    if (childViewTriggers && _.isString(childViewTriggers[eventName])) {\n      this.triggerMethod(childViewTriggers[eventName], ...args);\n    }\n\n    const prefix = _.result(this, 'childViewEventPrefix');\n\n    if (prefix !== false) {\n      const childEventName = prefix + ':' + eventName;\n\n      this.triggerMethod(childEventName, ...args);\n    }\n  }\n};\n\n_.extend(ViewMixin, BehaviorsMixin, CommonMixin, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default ViewMixin;\n","import { triggerMethodOn } from '../common/trigger-method';\n\nexport function renderView(view) {\n  if (view._isRendered) {\n    return;\n  }\n\n  if (!view.supportsRenderLifecycle) {\n    triggerMethodOn(view, 'before:render', view);\n  }\n\n  view.render();\n\n  if (!view.supportsRenderLifecycle) {\n    view._isRendered = true;\n    triggerMethodOn(view, 'render', view);\n  }\n}\n\nexport function destroyView(view) {\n  if (view.destroy) {\n    view.destroy();\n    return;\n  }\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'before:destroy', view);\n  }\n\n  const shouldTriggerDetach = view._isAttached && !view._shouldDisableEvents;\n\n  if (shouldTriggerDetach) {\n    triggerMethodOn(view, 'before:detach', view);\n  }\n\n  view.remove();\n\n  if (shouldTriggerDetach) {\n    view._isAttached = false;\n    triggerMethodOn(view, 'detach', view);\n  }\n\n  view._isDestroyed = true;\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'destroy', view);\n  }\n}\n","// Region\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport { renderView, destroyView } from './common/view';\nimport monitorViewEvents from './common/monitor-view-events';\nimport isNodeAttached from './common/is-node-attached';\nimport { triggerMethodOn } from './common/trigger-method';\nimport MarionetteObject from './object';\nimport MarionetteError from './error';\nimport View from './view';\nimport DomApi, { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'allowMissingEl',\n  'parentEl',\n  'replaceElement'\n];\n\nconst Region = MarionetteObject.extend({\n  Dom: DomApi,\n\n  cidPrefix: 'mnr',\n  replaceElement: false,\n  _isReplaced: false,\n  _isSwappingView: false,\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    // getOption necessary because options.el may be passed as undefined\n    this._initEl = this.el = this.getOption('el');\n\n    // Handle when this.el is passed in as a $ wrapped element.\n    this.el = this.el instanceof Backbone.$ ? this.el[0] : this.el;\n\n    if (!this.el) {\n      throw new MarionetteError({\n        name: 'NoElError',\n        message: 'An \"el\" must be specified for a region.'\n      });\n    }\n\n    this.$el = this.getEl(this.el);\n    MarionetteObject.call(this, options);\n  },\n\n  // Displays a backbone view instance inside of the region. Handles calling the `render`\n  // method for you. Reads content directly from the `el` attribute. The `preventDestroy`\n  // option can be used to prevent a view from the old view being destroyed on show.\n  show(view, options) {\n    if (!this._ensureElement(options)) {\n      return;\n    }\n\n    view = this._getView(view, options);\n\n    if (view === this.currentView) { return this; }\n\n    this._isSwappingView = !!this.currentView;\n\n    this.triggerMethod('before:show', this, view, options);\n\n    // Assume an attached view is already in the region for pre-existing DOM\n    if (!view._isAttached) {\n      this.empty(options);\n    }\n\n    this._setupChildView(view);\n\n    this.currentView = view;\n\n    renderView(view);\n\n    this._attachView(view, options);\n\n    this.triggerMethod('show', this, view, options);\n\n    this._isSwappingView = false;\n\n    return this;\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    this._proxyChildViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other than through the region.\n    // If this happens we need to remove the reference to the currentView since once a view\n    // has been destroyed we can not reuse it.\n    view.on('destroy', this._empty, this);\n  },\n\n  _proxyChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    parentView._proxyChildViewEvents(view);\n  },\n\n  // If the regions parent view is not monitoring its attach/detach events\n  _shouldDisableMonitoring() {\n    return this._parentView && this._parentView.monitorViewEvents === false;\n  },\n\n  _attachView(view, options = {}) {\n    const shouldTriggerAttach = !view._isAttached && isNodeAttached(this.el) && !this._shouldDisableMonitoring();\n    const shouldReplaceEl = typeof options.replaceElement === 'undefined' ? !!_.result(this, 'replaceElement') : !!options.replaceElement;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    if (shouldReplaceEl) {\n      this._replaceEl(view);\n    } else {\n      this.attachHtml(view);\n    }\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  _ensureElement(options = {}) {\n    if (!_.isObject(this.el)) {\n      this.$el = this.getEl(this.el);\n      this.el = this.$el[0];\n      // Make sure the $el contains only the el\n      this.$el = this.Dom.getEl(this.el);\n    }\n\n    if (!this.$el || this.$el.length === 0) {\n      const allowMissingEl = typeof options.allowMissingEl === 'undefined' ? !!_.result(this, 'allowMissingEl') : !!options.allowMissingEl;\n\n      if (allowMissingEl) {\n        return false;\n      } else {\n        throw new MarionetteError(`An \"el\" must exist in DOM for this region ${this.cid}`);\n      }\n    }\n    return true;\n  },\n\n  _getView(view) {\n    if (!view) {\n      throw new MarionetteError({\n        name: 'ViewNotValid',\n        message: 'The view passed is undefined and therefore invalid. You must pass a view instance to show.'\n      });\n    }\n\n    if (view._isDestroyed) {\n      throw new MarionetteError({\n        name: 'ViewDestroyedError',\n        message: `View (cid: \"${view.cid}\") has already been destroyed and cannot be used.`\n      });\n    }\n\n    if (view instanceof Backbone.View) {\n      return view;\n    }\n\n    const viewOptions = this._getViewOptions(view);\n\n    return new View(viewOptions);\n  },\n\n  // This allows for a template or a static string to be\n  // used as a template\n  _getViewOptions(viewOptions) {\n    if (_.isFunction(viewOptions)) {\n      return { template: viewOptions };\n    }\n\n    if (_.isObject(viewOptions)) {\n      return viewOptions;\n    }\n\n    const template = function() { return viewOptions; };\n\n    return { template };\n  },\n\n  // Override this method to change how the region finds the DOM element that it manages. Return\n  // a jQuery selector object scoped to a provided parent el or the document if none exists.\n  getEl(el) {\n    const context = _.result(this, 'parentEl');\n\n    if (context && _.isString(el)) {\n      return this.Dom.findEl(context, el);\n    }\n\n    return this.Dom.getEl(el);\n  },\n\n  _replaceEl(view) {\n    // always restore the el to ensure the regions el is present before replacing\n    this._restoreEl();\n\n    view.on('before:destroy', this._restoreEl, this);\n\n    this.Dom.replaceEl(view.el, this.el);\n\n    this._isReplaced = true;\n  },\n\n  // Restore the region's element in the DOM.\n  _restoreEl() {\n    // There is nothing to replace\n    if (!this._isReplaced) {\n      return;\n    }\n\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._detachView(view);\n\n    this._isReplaced = false;\n  },\n\n  // Check to see if the region's el was replaced.\n  isReplaced() {\n    return !!this._isReplaced;\n  },\n\n  // Check to see if a view is being swapped by another\n  isSwappingView() {\n    return !!this._isSwappingView;\n  },\n\n  // Override this method to change how the new view is appended to the `$el` that the\n  // region is managing\n  attachHtml(view) {\n    this.Dom.appendContents(this.el, view.el, {_$el: this.$el, _$contents: view.$el});\n  },\n\n  // Destroy the current view, if there is one. If there is no current view, it does\n  // nothing and returns immediately.\n  empty(options = { allowMissingEl: true }) {\n    const view = this.currentView;\n\n    // If there is no view in the region we should only detach current html\n    if (!view) {\n      if (this._ensureElement(options)) {\n        this.detachHtml();\n      }\n      return this;\n    }\n\n    const shouldDestroy = !options.preventDestroy;\n\n    if (!shouldDestroy) {\n      deprecate('The preventDestroy option is deprecated. Use Region#detachView');\n    }\n\n    this._empty(view, shouldDestroy);\n    return this;\n  },\n\n  _empty(view, shouldDestroy) {\n    view.off('destroy', this._empty, this);\n    this.triggerMethod('before:empty', this, view);\n\n    this._restoreEl();\n\n    delete this.currentView;\n\n    if (!view._isDestroyed) {\n      if (shouldDestroy) {\n        this.removeView(view);\n      } else {\n        this._detachView(view);\n      }\n      this._stopChildViewEvents(view);\n    }\n\n    this.triggerMethod('empty', this, view);\n  },\n\n  _stopChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    this._parentView.stopListening(view);\n  },\n\n  destroyView(view) {\n    if (view._isDestroyed) {\n      return view;\n    }\n\n    view._shouldDisableEvents = this._shouldDisableMonitoring();\n    destroyView(view);\n    return view;\n  },\n\n  removeView(view) {\n    this.destroyView(view);\n  },\n\n  // Empties the Region without destroying the view\n  // Returns the detached view\n  detachView() {\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._empty(view);\n\n    return view;\n  },\n\n  _detachView(view) {\n    const shouldTriggerDetach = view._isAttached && !this._shouldDisableMonitoring();;\n    const shouldRestoreEl = this._isReplaced;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    if (shouldRestoreEl) {\n      this.Dom.replaceEl(this.el, view.el);\n    } else {\n      this.detachHtml();\n    }\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the region detaches current content\n  detachHtml() {\n    this.Dom.detachContents(this.el, this.$el);\n  },\n\n  // Checks whether a view is currently present within the region. Returns `true` if there is\n  // and `false` if no view is present.\n  hasView() {\n    return !!this.currentView;\n  },\n\n  // Reset the region by destroying any existing view and clearing out the cached `$el`.\n  // The next time a view is shown via this region, the region will re-query the DOM for\n  // the region's `el`.\n  reset(options) {\n    this.empty(options);\n\n    if (this.$el) {\n      this.el = this._initEl;\n    }\n\n    delete this.$el;\n    return this;\n  },\n\n  destroy(options) {\n    if (this._isDestroyed) { return this; }\n\n    this.reset(options);\n\n    if (this._name) {\n      this._parentView._removeReferences(this._name);\n    }\n    delete this._parentView;\n    delete this._name;\n\n    return MarionetteObject.prototype.destroy.apply(this, arguments);\n  }\n}, {\n  setDomApi\n});\n\nexport default Region;\n","import _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\nimport Region from '../region';\n\n// return the region instance from the definition\nexport default function(definition, defaults) {\n  if (definition instanceof Region) {\n    return definition;\n  }\n\n  return buildRegionFromDefinition(definition, defaults);\n}\n\nfunction buildRegionFromDefinition(definition, defaults) {\n  const opts = _.extend({}, defaults);\n\n  if (_.isString(definition)) {\n    _.extend(opts, { el: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isFunction(definition)) {\n    _.extend(opts, { regionClass: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isObject(definition)) {\n    if (definition.selector) {\n      deprecate('The selector option on a Region definition object is deprecated. Use el to pass a selector string');\n    }\n\n    _.extend(opts, { el: definition.selector }, definition);\n\n    return buildRegionFromObject(opts);\n  }\n\n  throw new MarionetteError({\n    message: 'Improper region configuration type.',\n    url: 'marionette.region.html#region-configuration-types'\n  });\n}\n\nfunction buildRegionFromObject(definition) {\n  const RegionClass = definition.regionClass\n\n  const options = _.omit(definition, 'regionClass');\n\n  return new RegionClass(options);\n}\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport buildRegion from '../common/build-region';\nimport Region from '../region';\n\n// MixinOptions\n// - regions\n// - regionClass\n\nexport default {\n  regionClass: Region,\n\n  // Internal method to initialize the regions that have been defined in a\n  // `regions` attribute on this View.\n  _initRegions() {\n\n    // init regions hash\n    this.regions = this.regions || {};\n    this._regions = {};\n\n    this.addRegions(_.result(this, 'regions'));\n  },\n\n  // Internal method to re-initialize all of the regions by updating\n  // the `el` that they point to\n  _reInitRegions() {\n    _invoke(this._regions, 'reset');\n  },\n\n  // Add a single region, by name, to the View\n  addRegion(name, definition) {\n    const regions = {};\n    regions[name] = definition;\n    return this.addRegions(regions)[name];\n  },\n\n  // Add multiple regions as a {name: definition, name2: def2} object literal\n  addRegions(regions) {\n    // If there's nothing to add, stop here.\n    if (_.isEmpty(regions)) {\n      return;\n    }\n\n    // Normalize region selectors hash to allow\n    // a user to use the @ui. syntax.\n    regions = this.normalizeUIValues(regions, ['selector', 'el']);\n\n    // Add the regions definitions to the regions property\n    this.regions = _.extend({}, this.regions, regions);\n\n    return this._addRegions(regions);\n  },\n\n  // internal method to build and add regions\n  _addRegions(regionDefinitions) {\n    const defaults = {\n      regionClass: this.regionClass,\n      parentEl: _.partial(_.result, this, 'el')\n    };\n\n    return _.reduce(regionDefinitions, (regions, definition, name) => {\n      regions[name] = buildRegion(definition, defaults);\n      this._addRegion(regions[name], name);\n      return regions;\n    }, {});\n  },\n\n  _addRegion(region, name) {\n    this.triggerMethod('before:add:region', this, name, region);\n\n    region._parentView = this;\n    region._name = name;\n\n    this._regions[name] = region;\n\n    this.triggerMethod('add:region', this, name, region);\n  },\n\n  // Remove a single region from the View, by name\n  removeRegion(name) {\n    const region = this._regions[name];\n\n    this._removeRegion(region, name);\n\n    return region;\n  },\n\n  // Remove all regions from the View\n  removeRegions() {\n    const regions = this._getRegions();\n\n    _.each(this._regions, _.bind(this._removeRegion, this));\n\n    return regions;\n  },\n\n  _removeRegion(region, name) {\n    this.triggerMethod('before:remove:region', this, name, region);\n\n    region.destroy();\n\n    this.triggerMethod('remove:region', this, name, region);\n  },\n\n  // Called in a region's destroy\n  _removeReferences(name) {\n    delete this.regions[name];\n    delete this._regions[name];\n  },\n\n  // Empty all regions in the region manager, but\n  // leave them attached\n  emptyRegions() {\n    const regions = this.getRegions();\n    _invoke(regions, 'empty');\n    return regions;\n  },\n\n  // Checks to see if view contains region\n  // Accepts the region name\n  // hasRegion('main')\n  hasRegion(name) {\n    return !!this.getRegion(name);\n  },\n\n  // Provides access to regions\n  // Accepts the region name\n  // getRegion('main')\n  getRegion(name) {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._regions[name];\n  },\n\n  // Get all regions\n  _getRegions() {\n    return _.clone(this._regions);\n  },\n\n  getRegions() {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._getRegions();\n  },\n\n  showChildView(name, view, ...args) {\n    const region = this.getRegion(name);\n    return region.show(view, ...args);\n  },\n\n  detachChildView(name) {\n    return this.getRegion(name).detachView();\n  },\n\n  getChildView(name) {\n    return this.getRegion(name).currentView;\n  }\n\n};\n","// Renderer\n// --------\n\nimport _ from 'underscore';\nimport MarionetteError from '../error';\nimport TemplateCache from '../template-cache';\n\n// Render a template with data by passing in the template\n// selector and the data to render.\nconst Renderer = {\n\n  // Render a template with data. The `template` parameter is\n  // passed to the `TemplateCache` object to retrieve the\n  // template function. Override this method to provide your own\n  // custom rendering and template handling for all of Marionette.\n  render(template, data) {\n    if (!template) {\n      throw new MarionetteError({\n        name: 'TemplateNotFoundError',\n        message: 'Cannot render the template since its false, null or undefined.'\n      });\n    }\n\n    const templateFunc = _.isFunction(template) ? template : TemplateCache.get(template);\n\n    return templateFunc(data);\n  }\n};\n\nexport default Renderer;\n","// View\n// ---------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport ViewMixin from './mixins/view';\nimport RegionsMixin from './mixins/regions';\nimport Renderer from './config/renderer';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'regionClass',\n  'regions',\n  'template',\n  'templateContext',\n  'triggers',\n  'ui'\n];\n\n// The standard view. Includes view events, automatic rendering\n// of Underscore templates, nested views, and more.\nconst View = Backbone.View.extend({\n\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this._initRegions();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Serialize the view's model *or* collection, if\n  // it exists, for the template\n  serializeData() {\n    if (!this.model && !this.collection) {\n      return {};\n    }\n\n    // If we have a model, we serialize that\n    if (this.model) {\n      return this.serializeModel();\n    }\n\n    // Otherwise, we serialize the collection,\n    // making it available under the `items` property\n    return {\n      items: this.serializeCollection()\n    };\n  },\n\n  // Prepares the special `model` property of a view\n  // for being displayed in the template. By default\n  // we simply clone the attributes. Override this if\n  // you need a custom transformation for your view's model\n  serializeModel() {\n    if (!this.model) { return {}; }\n    return _.clone(this.model.attributes);\n  },\n\n  // Serialize a collection by cloning each of\n  // its model's attributes\n  serializeCollection() {\n    if (!this.collection) { return {}; }\n    return this.collection.map(function(model) { return _.clone(model.attributes); });\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // rendered or attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isRendered = this.Dom.hasContents(this.el);\n    this._isAttached = isNodeAttached(this.el);\n\n    if (this._isRendered) {\n      this.bindUIElements();\n    }\n\n    return this;\n  },\n\n  // Render the view, defaulting to underscore.js templates.\n  // You can override this in your view definition to provide\n  // a very specific rendering for your view. In general, though,\n  // you should override the `Marionette.Renderer` object to\n  // change how Marionette renders views.\n  // Subsequent renders after the first will re-render all nested\n  // views.\n  render() {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:render', this);\n\n    // If this is not the first render call, then we need to\n    // re-initialize the `el` for each region\n    if (this._isRendered) {\n      this._reInitRegions();\n    }\n\n    this._renderTemplate();\n    this.bindUIElements();\n\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n\n    return this;\n  },\n\n  // Internal method to render the template with the serialized data\n  // and template context via the `Marionette.Renderer` object.\n  _renderTemplate() {\n    const template = this.getTemplate();\n\n    // Allow template-less views\n    if (template === false) {\n      deprecate('template:false is deprecated.  Use _.noop.');\n      return;\n    }\n\n    // Add in entity data and template context\n    const data = this.mixinTemplateContext(this.serializeData());\n\n    // Render and add to el\n    const html = this._renderHtml(template, data);\n    this.attachElContent(html);\n  },\n\n  // Renders the data into the template\n  _renderHtml(template, data) {\n    return Renderer.render(template, data, this);\n  },\n\n  // Get the template for this view\n  // instance. You can set a `template` attribute in the view\n  // definition or pass a `template: \"whatever\"` parameter in\n  // to the constructor options.\n  getTemplate() {\n    return this.template;\n  },\n\n  // Mix in template context methods. Looks for a\n  // `templateContext` attribute, which can either be an\n  // object literal, or a function that returns an object\n  // literal. All methods and attributes from this object\n  // are copies to the object passed in.\n  mixinTemplateContext(target = {}) {\n    const templateContext = _.result(this, 'templateContext');\n    return _.extend(target, templateContext);\n  },\n\n  // Attaches the content of a given view.\n  // This method can be overridden to optimize rendering,\n  // or to render in a non standard way.\n  //\n  // For example, using `innerHTML` instead of `$el.html`\n  //\n  // ```js\n  // attachElContent(html) {\n  //   this.el.innerHTML = html;\n  //   return this;\n  // }\n  // ```\n  attachElContent(html) {\n    this.Dom.setContents(this.el, html, this.$el);\n\n    return this;\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this.removeRegions();\n  },\n\n  _getImmediateChildren() {\n    return _.chain(this._getRegions())\n      .map('currentView')\n      .compact()\n      .value();\n  }\n}, {\n  // Sets the renderer for the Marionette.View class\n  setRenderer(renderer) {\n    this.prototype._renderHtml = renderer;\n    return this;\n  },\n\n  setDomApi\n});\n\n_.extend(View.prototype, ViewMixin, RegionsMixin);\n\nexport default View;\n","// Mix in methods from Underscore, for iteration, and other\n// collection related features.\n// Borrowing this code from Backbone.Collection:\n// https://github.com/jashkenas/backbone/blob/1.1.2/backbone.js#L962\n\nimport _ from 'underscore';\n\nconst methods = ['forEach', 'each', 'map', 'find', 'detect', 'filter',\n                'select', 'reject', 'every', 'all', 'some', 'any', 'include',\n                'contains', 'invoke', 'toArray', 'first', 'initial', 'rest',\n                'last', 'without', 'isEmpty', 'pluck', 'reduce', 'partition'];\n\nconst emulateCollection = function(object, listProperty) {\n  _.each(methods, function(method) {\n    object[method] = function() {\n      const list = _.result(this, listProperty);\n      const args = Array.prototype.slice.call(arguments);\n      return _[method].apply(_, [list].concat(args));\n    };\n  });\n};\n\nexport default emulateCollection;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function(views) {\n  this._views = {};\n  this._indexByModel = {};\n  this._indexByCustom = {};\n  this._updateLength();\n\n  _.each(views, _.bind(this.add, this));\n};\n\nemulateCollection(Container.prototype, '_getViews');\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  _getViews() {\n    return _.values(this._views);\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Optionally specify\n  // a custom key to store an retrieve the view.\n  add(view, customIndex) {\n    return this._add(view, customIndex)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _add(view, customIndex) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._views[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // index by custom\n    if (customIndex) {\n      this._indexByCustom[customIndex] = viewCid;\n    }\n\n    return this;\n  },\n\n  // Find a view by the model that was attached to\n  // it. Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to\n  // it. Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by a custom indexer.\n  findByCustom(index) {\n    const viewCid = this._indexByCustom[index];\n    return this.findByCid(viewCid);\n  },\n\n  // Find by index. This is not guaranteed to be a\n  // stable index.\n  findByIndex(index) {\n    return _.values(this._views)[index];\n  },\n\n  // retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._views[cid];\n  },\n\n  // Remove a view\n  remove(view) {\n    return this._remove(view)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _remove(view) {\n    const viewCid = view.cid;\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // delete custom index\n    _.some(this._indexByCustom, _.bind(function(cid, key) {\n      if (cid === viewCid) {\n        delete this._indexByCustom[key];\n        return true;\n      }\n    }, this));\n\n    // remove the view from the container\n    delete this._views[viewCid];\n\n    return this;\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = _.size(this._views);\n\n    return this;\n  }\n});\n\nexport default Container;\n","// Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './child-view-container';\nimport MarionetteError from './error';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'filter',\n  'emptyView',\n  'emptyViewOptions',\n  'modelEvents',\n  'reorderOnSort',\n  'sort',\n  'triggers',\n  'ui',\n  'viewComparator'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n\n  // flag for maintaining the sorted order of the collection\n  sort: true,\n\n  // constructor\n  // option to pass `{sort: false}` to prevent the `CollectionView` from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  //\n  // option to pass `{viewComparator: compFunction()}` to allow the `CollectionView`\n  // to use a custom sort order for the collection.\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this.once('render', this._initialEvents);\n    this._initChildViewStorage();\n    this._bufferedChildren = [];\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Instead of inserting elements one by one into the page, it's much more performant to insert\n  // elements into a document fragment and then insert that document fragment into the page\n  _startBuffering() {\n    this._isBuffering = true;\n  },\n\n  _endBuffering() {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n    const triggerOnChildren = shouldTriggerAttach ? this._getImmediateChildren() : [];\n\n    this._isBuffering = false;\n\n    _.each(triggerOnChildren, child => {\n      triggerMethodOn(child, 'before:attach', child);\n    });\n\n    this.attachBuffer(this, this._createBuffer());\n\n    _.each(triggerOnChildren, child => {\n      child._isAttached = true;\n      triggerMethodOn(child, 'attach', child);\n    });\n\n    this._bufferedChildren = [];\n  },\n\n  _getImmediateChildren() {\n    return _.values(this.children._views);\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.render);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Handle a child added to the collection\n  _onCollectionAdd(child, collection, opts) {\n    // `index` is present when adding with `at` since BB 1.2; indexOf fallback for < 1.2\n    let index = opts.at !== undefined && (opts.index || collection.indexOf(child));\n\n    // When filtered or when there is no initial index, calculate index.\n    if (this.filter || index === false) {\n      index = _.indexOf(this._filteredSortedModels(index), child);\n    }\n\n    if (this._shouldAddChild(child, index)) {\n      this._destroyEmptyView();\n      this._addChild(child, index)\n    }\n  },\n\n  // Handle collection update model removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n    this._removeChildModels(changes.removed);\n  },\n\n  // Remove the child views and destroy them.\n  // This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  // \"models\" is an array of models and the corresponding views\n  // will be removed and destroyed from the CollectionView\n  _removeChildModels(models) {\n    // Used to determine where to update the remaining\n    // sibling view indices after these views are removed.\n    const removedViews = this._getRemovedViews(models);\n\n    if (!removedViews.length) {\n      return;\n    }\n\n    this.children._updateLength();\n\n    // decrement the index of views after this one\n    this._updateIndices(removedViews, false);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n  },\n\n  // Returns the views that will be used for re-indexing\n  // through CollectionView#_updateIndices.\n  _getRemovedViews(models) {\n\n    // Returning a view means something was removed.\n    return _.reduce(models, (removingViews, model) => {\n      const view = model && this.children.findByModel(model);\n\n      if (!view || view._isDestroyed) {\n        return removingViews;\n      }\n\n      this._removeChildView(view);\n\n      removingViews.push(view);\n\n      return removingViews;\n    }, []);\n  },\n\n  _removeChildView(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n\n    this.stopListening(view);\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views. Override this method to provide your own implementation of a\n  // render function for the collection view.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n    this._renderChildren();\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // An efficient rendering used for filtering. Instead of modifying the whole DOM for the\n  // collection view, we are only adding or removing the related childrenViews.\n  setFilter(filter, {preventRender} = {}) {\n    const canBeRendered = this._isRendered && !this._isDestroyed;\n    const filterChanged = this.filter !== filter;\n    const shouldRender = canBeRendered && filterChanged && !preventRender;\n\n    if (shouldRender) {\n      const previousModels = this._filteredSortedModels();\n      this.filter = filter;\n      const models = this._filteredSortedModels();\n      this._applyModelDeltas(models, previousModels);\n    } else {\n      this.filter = filter;\n    }\n\n    return this;\n  },\n\n  // `removeFilter` is actually an alias for removing filters.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  // Calculate and apply difference by cid between `models` and `previousModels`.\n  _applyModelDeltas(models, previousModels) {\n    const currentIds = {};\n    _.each(models, (model, index) => {\n      const addedChildNotExists = !this.children.findByModel(model);\n      if (addedChildNotExists) {\n        this._onCollectionAdd(model, this.collection, {at: index});\n      }\n      currentIds[model.cid] = true;\n    });\n\n    const removeModels = _.filter(previousModels, (prevModel) => {\n      return !currentIds[prevModel.cid] && this.children.findByModel(prevModel);\n    });\n\n    this._removeChildModels(removeModels);\n  },\n\n  // Reorder DOM after sorting. When your element's rendering do not use their index,\n  // you can pass reorderOnSort: true to only reorder the DOM after a sort instead of\n  // rendering all the collectionView.\n  reorder() {\n    const children = this.children;\n    const models = this._filteredSortedModels();\n\n    if (!models.length && this._showingEmptyView) { return this; }\n\n    const anyModelsAdded = _.some(models, function(model) {\n      return !children.findByModel(model);\n    });\n\n    // If there are any new models added due to filtering we need to add child views,\n    // so render as normal.\n    if (anyModelsAdded) {\n      this.render();\n    } else {\n\n      const filteredOutModels = [];\n\n      // Get the DOM nodes in the same order as the models and\n      // find the model that were children before but aren't in this new order.\n      const elsToReorder = _.reduce(this.children._views, function(viewEls, view) {\n        const index = _.indexOf(models, view.model);\n\n        if (index === -1) {\n          filteredOutModels.push(view.model);\n          return viewEls;\n        }\n\n        view._index = index;\n\n        viewEls[index] = view.el;\n\n        return viewEls;\n      }, new Array(models.length));\n\n      this.triggerMethod('before:reorder', this);\n\n      const elBuffer = this.Dom.createBuffer();\n\n      _.each(elsToReorder, (el) => {\n        this.Dom.appendContents(elBuffer, el);\n      });\n\n      // Since append moves elements that are already in the DOM, appending the elements\n      // will effectively reorder them.\n      this._appendReorderedChildren(elBuffer);\n\n      // remove any views that have been filtered out\n      this._removeChildModels(filteredOutModels);\n\n      this.triggerMethod('reorder', this);\n    }\n    return this;\n  },\n\n  // Render view after sorting. Override this method to change how the view renders\n  // after a `sort` on the collection.\n  resortView() {\n    if (this.reorderOnSort) {\n      this.reorder();\n    } else {\n      this._renderChildren();\n    }\n    return this;\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will render.\n  _sortViews() {\n    const models = this._filteredSortedModels();\n\n    // check for any changes in sort order of views\n    const orderChanged = _.find(models, (item, index) => {\n      const view = this.children.findByModel(item);\n      return !view || view._index !== index;\n    });\n\n    if (orderChanged) {\n      this.resortView();\n    }\n  },\n\n  // Internal reference to what index a `emptyView` is.\n  _emptyViewIndex: -1,\n\n  // Internal method. Separated so that CompositeView can append to the childViewContainer\n  // if necessary\n  _appendReorderedChildren(children) {\n    this.Dom.appendContents(this.el, children, {_$el: this.$el});\n  },\n\n  // Internal method. Separated so that CompositeView can have more control over events\n  // being triggered, around the rendering process\n  _renderChildren() {\n    if (this._isRendered) {\n      this._destroyEmptyView();\n      this._destroyChildren();\n    }\n\n    const models = this._filteredSortedModels();\n    if (this.isEmpty({processedModels: models})) {\n      this._showEmptyView();\n    } else {\n      this.triggerMethod('before:render:children', this);\n      this._startBuffering();\n      this._showCollection(models);\n      this._endBuffering();\n      this.triggerMethod('render:children', this);\n    }\n  },\n\n  _createView(model, index) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model, index);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n    return view;\n  },\n\n  _setupChildView(view, index) {\n    monitorViewEvents(view);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n\n    if (this.sort) {\n      view._index = index;\n    }\n  },\n\n  // Internal method to loop through collection and show each child view.\n  _showCollection(models) {\n    _.each(models, _.bind(this._addChild, this));\n    this.children._updateLength();\n  },\n\n  // Allow the collection to be sorted by a custom view comparator\n  _filteredSortedModels(addedAt) {\n    if (!this.collection || !this.collection.length) { return []; }\n\n    const viewComparator = this.getViewComparator();\n    let models = this.collection.models;\n    addedAt = Math.min(Math.max(addedAt, 0), models.length - 1);\n\n    if (viewComparator) {\n      let addedModel;\n      // Preserve `at` location, even for a sorted view\n      if (addedAt) {\n        addedModel = models[addedAt];\n        models = models.slice(0, addedAt).concat(models.slice(addedAt + 1));\n      }\n      models = this._sortModelsBy(models, viewComparator);\n      if (addedModel) {\n        models.splice(addedAt, 0, addedModel);\n      }\n    }\n\n    // Filter after sorting in case the filter uses the index\n    models = this._filterModels(models);\n\n    return models;\n  },\n\n  getViewComparator() {\n    return this.viewComparator;\n  },\n\n  // Filter an array of models, if a filter exists\n  _filterModels(models) {\n    if (this.filter) {\n      models = _.filter(models, (model, index) => {\n        return this._shouldAddChild(model, index);\n      });\n    }\n    return models;\n  },\n\n  _sortModelsBy(models, comparator) {\n    if (typeof comparator === 'string') {\n      return _.sortBy(models, (model) => {\n        return model.get(comparator);\n      });\n    } else if (comparator.length === 1) {\n      return _.sortBy(models, _.bind(comparator, this));\n    } else {\n      return _.clone(models).sort(_.bind(comparator, this));\n    }\n  },\n\n  // Internal method to show an empty view in place of a collection of child views,\n  // when the collection is empty\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (EmptyView && !this._showingEmptyView) {\n      this._showingEmptyView = true;\n\n      const model = new Backbone.Model();\n      let emptyViewOptions =\n        this.emptyViewOptions || this.childViewOptions;\n      if (_.isFunction(emptyViewOptions)) {\n        emptyViewOptions = emptyViewOptions.call(this, model, this._emptyViewIndex);\n      }\n\n      const view = this.buildChildView(model, EmptyView, emptyViewOptions);\n\n      this.triggerMethod('before:render:empty', this, view);\n      this.addChildView(view, 0);\n      this.triggerMethod('render:empty', this, view);\n    }\n  },\n\n  // Internal method to destroy an existing emptyView instance if one exists. Called when\n  // a collection view has been rendered empty, and then a child is added to the collection.\n  _destroyEmptyView() {\n    if (this._showingEmptyView) {\n      this.triggerMethod('before:remove:empty', this);\n\n      this._destroyChildren();\n      delete this._showingEmptyView;\n\n      this.triggerMethod('remove:empty', this);\n    }\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  // Internal method for building and adding a child view\n  _addChild(child, index) {\n    const view = this._createView(child, index);\n    this.addChildView(view, index);\n\n    return view;\n  },\n\n  _getChildViewOptions(child, index) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child, index);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index.\n  // This will also update the indices of later views in the collection in order to keep the\n  // children in sync with the collection.\n  addChildView(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n    this._setupChildView(view, index);\n\n    // Store the child view itself so we can properly remove and/or destroy it later\n    if (this._isBuffering) {\n      // Add to children, but don't update children's length.\n      this.children._add(view);\n    } else {\n      // increment indices of views after this one\n      this._updateIndices(view, true);\n      this.children.add(view);\n    }\n\n    renderView(view);\n\n    this._attachView(view, index);\n\n    this.triggerMethod('add:child', this, view);\n\n    return view;\n  },\n\n  // Internal method. This decrements or increments the indices of views after the added/removed\n  // view to keep in sync with the collection.\n  _updateIndices(views, increment) {\n    if (!this.sort) {\n      return;\n    }\n\n    if (!increment) {\n      _.each(_.sortBy(this.children._views, '_index'), (view, index) => {\n        view._index = index;\n      });\n\n      return;\n    }\n\n    const view = _.isArray(views) ? _.max(views, '_index') : views;\n\n    if (_.isObject(view)) {\n      // update the indexes of views after this one\n      _.each(this.children._views, (laterView) => {\n        if (laterView._index >= view._index) {\n          laterView._index += 1;\n        }\n      });\n    }\n  },\n\n  _attachView(view, index) {\n    // Only trigger attach if already attached and not buffering,\n    // otherwise _endBuffering() or Region#show() handles this.\n    const shouldTriggerAttach = !view._isAttached && !this._isBuffering && this._isAttached && this.monitorViewEvents !== false;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    this.attachHtml(this, view, index);\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  // Build a `childView` for a model in the collection.\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  // Remove the child view and destroy it. This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  removeChildView(view) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    this._removeChildView(view);\n    this.children._updateLength();\n    // decrement the index of views after this one\n    this._updateIndices(view, false);\n    return view;\n  },\n\n  // check if the collection is empty or optionally whether an array of pre-processed models is empty\n  isEmpty(options) {\n    let models;\n    if (_.result(options, 'processedModels')) {\n      models = options.processedModels;\n    } else {\n      models = this.collection ? this.collection.models : [];\n      models = this._filterModels(models);\n    }\n    return models.length === 0;\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(collectionView, buffer) {\n    this.Dom.appendContents(collectionView.el, buffer, {_$el: collectionView.$el});\n  },\n\n  // Create a fragment buffer from the currently buffered children\n  _createBuffer() {\n    const elBuffer = this.Dom.createBuffer();\n    _.each(this._bufferedChildren, (b) => {\n      this.Dom.appendContents(elBuffer, b.el, {_$contents: b.$el});\n    });\n    return elBuffer;\n  },\n\n  // Append the HTML to the collection's `el`. Override this method to do something other\n  // than `.append`.\n  attachHtml(collectionView, childView, index) {\n    if (collectionView._isBuffering) {\n      // buffering happens on reset events and initial renders\n      // in order to reduce the number of inserts into the\n      // document, which are expensive.\n      collectionView._bufferedChildren.splice(index, 0, childView);\n    } else {\n      // If we've already rendered the main collection, append\n      // the new child into the correct order if we need to. Otherwise\n      // append to the end.\n      if (!collectionView._insertBefore(childView, index)) {\n        collectionView._insertAfter(childView);\n      }\n    }\n  },\n\n  // Internal method. Check whether we need to insert the view into the correct position.\n  _insertBefore(childView, index) {\n    let currentView;\n    const findPosition = this.sort && (index < this.children.length - 1);\n    if (findPosition) {\n      // Find the view after this one\n      currentView = _.find(this.children._views, (view) => {\n        return view._index === index + 1;\n      });\n    }\n\n    if (currentView) {\n      this.beforeEl(currentView.el, childView.el);\n      return true;\n    }\n\n    return false;\n  },\n\n  // Override to handle DOM inserting differently\n  beforeEl(el, siblings) {\n    this.$(el).before(siblings);\n  },\n\n  // Internal method. Append a view to the end of the $el\n  _insertAfter(childView) {\n    this.Dom.appendContents(this.el, childView.el, {_$el: this.$el, _$contents: childView.$el});\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren(options) {\n    if (!this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.children._updateLength();\n    this.triggerMethod('destroy:children', this);\n  },\n\n  // Return true if the given child should be shown. Return false otherwise.\n  // The filter will be passed (child, index, collection), where\n  //  'child' is the given model\n  //  'index' is the index of that model in the collection\n  //  'collection' is the collection referenced by this CollectionView\n  _shouldAddChild(child, index) {\n    const filter = this.filter;\n    return !_.isFunction(filter) || filter.call(this, child, index, this.collection);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function() {\n  this._init();\n};\n\nemulateCollection(Container.prototype, '_views');\n\nfunction stringComparator(comparator, view) {\n  return view.model && view.model.get(comparator);\n}\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  // Initializes an empty container\n  _init() {\n    this._views = [];\n    this._viewsByCid = {};\n    this._indexByModel = {};\n    this._updateLength();\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Additionally it stores\n  // the view by index in the _views array\n  _add(view, index = this._views.length) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._viewsByCid[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // add to end by default\n    this._views.splice(index, 0, view);\n\n    this._updateLength();\n  },\n\n  // Sort (mutate) and return the array of the child views.\n  _sort(comparator, context) {\n    if (typeof comparator === 'string') {\n      comparator = _.partial(stringComparator, comparator);\n      return this._sortBy(comparator);\n    }\n\n    if (comparator.length === 1) {\n      return this._sortBy(_.bind(comparator, context));\n    }\n\n    return this._views.sort(_.bind(comparator, context));\n  },\n\n  // Makes `_.sortBy` mutate the array to match `this._views.sort`\n  _sortBy(comparator) {\n    const sortedViews = _.sortBy(this._views, comparator);\n\n    this._set(sortedViews);\n\n    return sortedViews;\n  },\n\n  // Replace array contents without overwriting the reference.\n  _set(views) {\n    this._views.length = 0;\n\n    this._views.push.apply(this._views, views.slice(0));\n\n    this._updateLength();\n  },\n\n  // Swap views by index\n  _swap(view1, view2) {\n    const view1Index = this.findIndexByView(view1);\n    const view2Index = this.findIndexByView(view2);\n\n    if (view1Index === -1 || view2Index === -1) {\n      return;\n    }\n\n    const swapView = this._views[view1Index];\n    this._views[view1Index] = this._views[view2Index];\n    this._views[view2Index] = swapView;\n  },\n\n  // Find a view by the model that was attached to it.\n  // Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to it.\n  // Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by index.\n  findByIndex(index) {\n    return this._views[index];\n  },\n\n  // Find the index of a view instance\n  findIndexByView(view) {\n    return this._views.indexOf(view);\n  },\n\n  // Retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._viewsByCid[cid];\n  },\n\n  hasView(view) {\n    return !!this.findByCid(view.cid);\n  },\n\n  // Remove a view and clean up index references.\n  _remove(view) {\n    if (!this._viewsByCid[view.cid]) {\n      return;\n    }\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // remove the view from the container\n    delete this._viewsByCid[view.cid];\n\n    const index = this.findIndexByView(view);\n    this._views.splice(index, 1);\n\n    this._updateLength();\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = this._views.length;\n  }\n});\n\nexport default Container;\n","// Next Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './next-child-view-container';\nimport MarionetteError from './error';\nimport Region from './region';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'emptyView',\n  'emptyViewOptions',\n  'events',\n  'modelEvents',\n  'sortWithCollection',\n  'triggers',\n  'ui',\n  'viewComparator',\n  'viewFilter'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n  // flag for maintaining the sorted order of the collection\n  sortWithCollection: true,\n\n  // constructor\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this.once('render', this._initialEvents);\n\n    // This children container isn't really used by a render, but it provides\n    // the ability to check `this.children.length` prior to rendering\n    // It also allows for cases where only addChildView is used\n    this._initChildViewStorage();\n    this._initBehaviors();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    // Init empty region\n    this.getEmptyRegion();\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // Create an region to show the emptyView\n  getEmptyRegion() {\n    if (this._emptyRegion && !this._emptyRegion.isDestroyed()) {\n      return this._emptyRegion;\n    }\n\n    this._emptyRegion = new Region({ el: this.el, replaceElement: false });\n\n    this._emptyRegion._parentView = this;\n\n    return this._emptyRegion;\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    this.listenTo(this.collection, {\n      'sort': this._onCollectionSort,\n      'reset': this._onCollectionReset,\n      'update': this._onCollectionUpdate\n    });\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will re-sort.\n  _onCollectionSort(collection, { add, merge, remove }) {\n    if (!this.sortWithCollection || this.viewComparator === false) {\n      return;\n    }\n\n    // If the data is changing we will handle the sort later in `_onCollectionUpdate`\n    if (add || remove || merge) {\n      return;\n    }\n\n    // If the only thing happening here is sorting, sort.\n    this.sort();\n  },\n\n  _onCollectionReset() {\n    this.render();\n  },\n\n  // Handle collection update model additions and  removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n\n    // Remove first since it'll be a shorter array lookup.\n    const removedViews = changes.removed.length && this._removeChildModels(changes.removed);\n\n    this._addedViews = changes.added.length && this._addChildModels(changes.added);\n\n    this._detachChildren(removedViews);\n\n    this._showChildren();\n\n    // Destroy removed child views after all of the render is complete\n    this._removeChildViews(removedViews);\n  },\n\n  _removeChildModels(models) {\n    return _.reduce(models, (views, model) => {\n      const removeView = this._removeChildModel(model);\n\n      if (removeView) { views.push(removeView); }\n\n      return views;\n    }, []);\n  },\n\n  _removeChildModel(model) {\n    const view = this.children.findByModel(model);\n\n    if (view) { this._removeChild(view); }\n\n    return view;\n  },\n\n  _removeChild(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Added views are returned for consistency with _removeChildModels\n  _addChildModels(models) {\n    return _.map(models, _.bind(this._addChildModel, this));\n  },\n\n  _addChildModel(model) {\n    const view = this._createChildView(model);\n\n    this._addChild(view);\n\n    return view;\n  },\n\n  _createChildView(model) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n\n    return view;\n  },\n\n  _addChild(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n\n    this._setupChildView(view);\n    this.children._add(view, index);\n\n    this.triggerMethod('add:child', this, view);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  _getChildViewOptions(child) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Build a `childView` for a model in the collection.\n  // Override to customize the build\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other\n    // than through the CollectionView.\n    // If this happens we need to remove the reference to the view\n    // since once a view has been destroyed we can not reuse it.\n    view.on('destroy', this.removeChildView, this);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n  },\n\n  // used by ViewMixin's `_childViewEventHandler`\n  _getImmediateChildren() {\n    return this.children._views;\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n\n    this._destroyChildren();\n\n    // After all children have been destroyed re-init the container\n    this.children._init();\n\n    if (this.collection) {\n      this._addChildModels(this.collection.models);\n    }\n\n    this._showChildren();\n\n    this._isRendered = true;\n\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // Sorts the children then filters and renders the results.\n  sort() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    this._showChildren();\n\n    return this;\n  },\n\n  _showChildren() {\n    if (this.isEmpty()) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._sortChildren();\n\n    this.filter();\n  },\n\n  // Returns true if the collectionView is considered empty.\n  // This is called twice during a render. Once to check the data,\n  // and again when views are filtered. Override this function to\n  // customize what empty means.\n  isEmpty(allViewsFiltered) {\n    return allViewsFiltered || !this.children.length;\n  },\n\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (!EmptyView) {\n      return;\n    }\n\n    const options = this._getEmptyViewOptions();\n\n    const emptyRegion = this.getEmptyRegion();\n\n    emptyRegion.show(new EmptyView(options));\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Remove the emptyView\n  _destroyEmptyView() {\n    const emptyRegion = this.getEmptyRegion();\n    // Only empty if a view is show so the region\n    // doesn't detach any other unrelated HTML\n    if (emptyRegion.hasView()) {\n      emptyRegion.empty();\n    }\n  },\n\n  //\n  _getEmptyViewOptions() {\n    const emptyViewOptions = this.emptyViewOptions || this.childViewOptions;\n\n    if (_.isFunction(emptyViewOptions)) {\n      return emptyViewOptions.call(this);\n    }\n\n    return emptyViewOptions;\n  },\n\n  // Sorts views by viewComparator and sets the children to the new order\n  _sortChildren() {\n    let viewComparator = this.getComparator();\n\n    if (!viewComparator) { return; }\n\n    // If children are sorted prevent added to end perf\n    delete this._addedViews;\n\n    this.triggerMethod('before:sort', this);\n\n    this.children._sort(viewComparator, this);\n\n    this.triggerMethod('sort', this);\n  },\n\n  // Sets the view's `viewComparator` and applies the sort if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setComparator(comparator, {preventRender} = {}) {\n    const comparatorChanged = this.viewComparator !== comparator;\n    const shouldSort = comparatorChanged && !preventRender;\n\n    this.viewComparator = comparator;\n\n    if (shouldSort) {\n      this.sort();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewComparator` and follows the same rules for rendering as `setComparator`.\n  removeComparator(options) {\n    return this.setComparator(null, options);\n  },\n\n  // If viewComparator is overriden it will be returned here.\n  // Additionally override this function to provide custom\n  // viewComparator logic\n  getComparator() {\n    if (this.viewComparator) { return this.viewComparator }\n\n    if (!this.sortWithCollection || this.viewComparator === false || !this.collection) {\n      return false;\n    }\n\n    return this._viewComparator;\n  },\n\n  // Default internal view comparator that order the views by\n  // the order of the collection\n  _viewComparator(view) {\n    return this.collection.indexOf(view.model);\n  },\n\n  // This method re-filters the children views and re-renders the results\n  filter() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    const filteredViews = this._filterChildren();\n\n    this._renderChildren(filteredViews);\n\n    return this;\n  },\n\n  _filterChildren() {\n    const viewFilter = this._getFilter();\n    const addedViews = this._addedViews;\n\n    delete this._addedViews;\n\n    if (!viewFilter) {\n      if (addedViews) { return addedViews; }\n\n      return this.children._views;\n    }\n\n    this.triggerMethod('before:filter', this);\n\n    const attachViews = [];\n    const detachViews = [];\n\n    _.each(this.children._views, (view, key, children) => {\n      (viewFilter.call(this, view, key, children) ? attachViews : detachViews).push(view);\n    });\n\n    this._detachChildren(detachViews);\n\n    this.triggerMethod('filter', this, attachViews, detachViews);\n\n    return attachViews;\n  },\n\n  // This method returns a function for the viewFilter\n  _getFilter() {\n    const viewFilter = this.getFilter();\n\n    if (!viewFilter) { return false; }\n\n    if (_.isFunction(viewFilter)) {\n      return viewFilter;\n    }\n\n    // Support filter predicates `{ fooFlag: true }`\n    if (_.isObject(viewFilter)) {\n      const matcher = _.matches(viewFilter);\n      return function(view) {\n        return matcher(view.model && view.model.attributes);\n      };\n    }\n\n    // Filter by model attribute\n    if (_.isString(viewFilter)) {\n      return function(view) {\n        return view.model && view.model.get(viewFilter);\n      };\n    }\n\n    throw new MarionetteError({\n      name: 'InvalidViewFilterError',\n      message: '\"viewFilter\" must be a function, predicate object literal, a string indicating a model attribute, or falsy'\n    });\n  },\n\n  // Override this function to provide custom\n  // viewFilter logic\n  getFilter() {\n    return this.viewFilter;\n  },\n\n  // Sets the view's `viewFilter` and applies the filter if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setFilter(filter, {preventRender} = {}) {\n    const filterChanged = this.viewFilter !== filter;\n    const shouldRender = filterChanged && !preventRender;\n\n    this.viewFilter = filter;\n\n    if (shouldRender) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewFilter` and follows the same rules for rendering as `setFilter`.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  _detachChildren(detachingViews) {\n    _.each(detachingViews, _.bind(this._detachChildView, this));\n  },\n\n  _detachChildView(view) {\n    const shouldTriggerDetach = view._isAttached && this.monitorViewEvents !== false;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    this.detachHtml(view);\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the collectionView detaches a child view\n  detachHtml(view) {\n    this.Dom.detachEl(view.el, view.$el);\n  },\n\n  _renderChildren(views) {\n    if (this.isEmpty(!views.length)) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._destroyEmptyView();\n\n    this.triggerMethod('before:render:children', this, views);\n\n    const els = this._getBuffer(views);\n\n    this._attachChildren(els, views);\n\n    this.triggerMethod('render:children', this, views);\n  },\n\n  _attachChildren(els, views) {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n\n    views = shouldTriggerAttach ? views : [];\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      triggerMethodOn(view, 'before:attach', view);\n    });\n\n    this.attachHtml(els);\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    });\n  },\n\n  // Renders each view in children and creates a fragment buffer from them\n  _getBuffer(views) {\n    const elBuffer = this.Dom.createBuffer();\n\n    _.each(views, view => {\n      renderView(view);\n      this.Dom.appendContents(elBuffer, view.el, {_$contents: view.$el});\n    });\n\n    return elBuffer;\n  },\n\n  // Override this method to do something other than `.append`.\n  // You can attach any HTML at this point including the els.\n  attachHtml(els) {\n    this.Dom.appendContents(this.el, els, {_$el: this.$el});\n  },\n\n  swapChildViews(view1, view2) {\n    if (!this.children.hasView(view1) || !this.children.hasView(view2)) {\n      throw new MarionetteError({\n        name: 'ChildSwapError',\n        message: 'Both views must be children of the collection view'\n      });\n    }\n\n    this.children._swap(view1, view2);\n    this.Dom.swapEl(view1.el, view2.el);\n\n    // If the views are not filtered the same, refilter\n    if (this.Dom.hasEl(this.el, view1.el) !== this.Dom.hasEl(this.el, view2.el)) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index, based on the current sort\n  addChildView(view, index) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    // Only cache views if added to the end\n    if (!index || index >= this.children.length) {\n      this._addedViews = [view];\n    }\n    this._addChild(view, index);\n    this._showChildren();\n\n    return view;\n  },\n\n  // Detach a view from the children.  Best used when adding a\n  // childView from `addChildView`\n  detachChildView(view) {\n    this.removeChildView(view, { shouldDetach: true });\n\n    return view;\n  },\n\n  // Remove the child view and destroy it.  Best used when adding a\n  // childView from `addChildView`\n  // The options argument is for internal use only\n  removeChildView(view, options) {\n    if (!view) {\n      return view;\n    }\n\n    this._removeChildView(view, options);\n\n    this._removeChild(view);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n\n    return view;\n  },\n\n  _removeChildViews(views) {\n    _.each(views, _.bind(this._removeChildView, this));\n  },\n\n  _removeChildView(view, {shouldDetach} = {}) {\n    view.off('destroy', this.removeChildView, this);\n\n    if (shouldDetach) {\n      this._detachChildView(view);\n    } else {\n      this._destroyChildView(view);\n    }\n\n    this.stopListening(view);\n  },\n\n  _destroyChildView(view) {\n    if (view._isDestroyed) {\n      return;\n    }\n\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n    const emptyRegion = this.getEmptyRegion();\n    emptyRegion.destroy();\n    delete this._addedViews;\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren() {\n    if (!this.children || !this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    if (this.monitorViewEvents === false) {\n      this.Dom.detachContents(this.el, this.$el);\n    }\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.triggerMethod('destroy:children', this);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","// Composite View\n// --------------\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport MarionetteError from './error';\nimport CollectionView from './collection-view';\nimport View from './view';\n\nconst ClassOptions = [\n  'childViewContainer',\n  'template',\n  'templateContext'\n];\n\n// Used for rendering a branch-leaf, hierarchical structure.\n// Extends directly from CollectionView\n// @deprecated\nconst CompositeView = CollectionView.extend({\n\n  // Setting up the inheritance chain which allows changes to\n  // Marionette.CollectionView.prototype.constructor which allows overriding\n  // option to pass '{sort: false}' to prevent the CompositeView from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  constructor(options) {\n    deprecate('CompositeView is deprecated. Convert to View at your earliest convenience');\n\n    this.mergeOptions(options, ClassOptions);\n\n    CollectionView.prototype.constructor.apply(this, arguments);\n  },\n\n  // Configured the initial events that the composite view\n  // binds to. Override this method to prevent the initial\n  // events, or to add your own initial events.\n  _initialEvents() {\n\n    // Bind only after composite view is rendered to avoid adding child views\n    // to nonexistent childViewContainer\n\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.renderChildren);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Retrieve the `childView` to be used when rendering each of\n  // the items in the collection. The default is to return\n  // `this.childView` or Marionette.CompositeView if no `childView`\n  // has been defined. As happens in CollectionView, `childView` can\n  // be a function (which should return a view class).\n  _getChildView(child) {\n    let childView = this.childView;\n\n    // for CompositeView, if `childView` is not specified, we'll get the same\n    // composite view class rendered for each child in the collection\n    // then check if the `childView` is a view class (the common case)\n    // finally check if it's a function (which we assume that returns a view class)\n    if (!childView) {\n      return this.constructor;\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // Return the serialized model\n  serializeData() {\n    return this.serializeModel();\n  },\n\n  // Renders the model and the collection.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this._isRendering = true;\n    this.resetChildViewContainer();\n\n    this.triggerMethod('before:render', this);\n\n    this._renderTemplate();\n    this.bindUIElements();\n    this.renderChildren();\n\n    this._isRendering = false;\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  renderChildren() {\n    if (this._isRendered || this._isRendering) {\n      CollectionView.prototype._renderChildren.call(this);\n    }\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(compositeView, buffer) {\n    const $container = this.getChildViewContainer(compositeView);\n    this.Dom.appendContents($container[0], buffer, {_$el: $container});\n  },\n\n  // Internal method. Append a view to the end of the $el.\n  // Overidden from CollectionView to ensure view is appended to\n  // childViewContainer\n  _insertAfter(childView) {\n    const $container = this.getChildViewContainer(this, childView);\n    this.Dom.appendContents($container[0], childView.el, {_$el: $container, _$contents: childView.$el});\n  },\n\n  // Internal method. Append reordered childView'.\n  // Overidden from CollectionView to ensure reordered views\n  // are appended to childViewContainer\n  _appendReorderedChildren(children) {\n    const $container = this.getChildViewContainer(this);\n    this.Dom.appendContents($container[0], children, {_$el: $container});\n  },\n\n  // Internal method to ensure an `$childViewContainer` exists, for the\n  // `attachHtml` method to use.\n  getChildViewContainer(containerView, childView) {\n    if (!!containerView.$childViewContainer) {\n      return containerView.$childViewContainer;\n    }\n\n    let container;\n    const childViewContainer = containerView.childViewContainer;\n    if (childViewContainer) {\n\n      const selector = _.result(containerView, 'childViewContainer');\n\n      if (selector.charAt(0) === '@' && containerView.ui) {\n        container = containerView.ui[selector.substr(4)];\n      } else {\n        container = this.$(selector);\n      }\n\n      if (container.length <= 0) {\n        throw new MarionetteError({\n          name: 'ChildViewContainerMissingError',\n          message: `The specified \"childViewContainer\" was not found: ${containerView.childViewContainer}`\n        });\n      }\n\n    } else {\n      container = containerView.$el;\n    }\n\n    containerView.$childViewContainer = container;\n    return container;\n  },\n\n  // Internal method to reset the `$childViewContainer` on render\n  resetChildViewContainer() {\n    if (this.$childViewContainer) {\n      this.$childViewContainer = undefined;\n    }\n  }\n});\n\n// To prevent duplication but allow the best View organization\n// Certain View methods are mixed directly into the deprecated CompositeView\nconst MixinFromView = _.pick(View.prototype, 'serializeModel', 'getTemplate', '_renderTemplate', '_renderHtml', 'mixinTemplateContext', 'attachElContent');\n_.extend(CompositeView.prototype, MixinFromView);\n\nexport default CompositeView;\n","// Behavior\n// --------\n\n// A Behavior is an isolated set of DOM /\n// user interactions that can be mixed into any View.\n// Behaviors allow you to blackbox View specific interactions\n// into portable logical chunks, keeping your views simple and your code DRY.\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport getNamespacedEventName from './utils/get-namespaced-event-name';\nimport MarionetteObject from './object';\nimport DelegateEntityEventsMixin from './mixins/delegate-entity-events';\nimport TriggersMixin from './mixins/triggers';\nimport UIMixin from './mixins/ui';\n\nconst ClassOptions = [\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'triggers',\n  'ui'\n];\n\nconst Behavior = MarionetteObject.extend({\n  cidPrefix: 'mnb',\n\n  constructor(options, view) {\n    // Setup reference to the view.\n    // this comes in handle when a behavior\n    // wants to directly talk up the chain\n    // to the view.\n    this.view = view;\n\n    if (this.defaults) {\n      deprecate('Behavior defaults are deprecated. For similar functionality set options on the Behavior class.');\n    }\n\n    this.defaults = _.clone(_.result(this, 'defaults', {}));\n\n    this._setOptions(_.extend({}, this.defaults, options));\n    this.mergeOptions(this.options, ClassOptions);\n\n    // Construct an internal UI hash using\n    // the behaviors UI hash and then the view UI hash.\n    // This allows the user to use UI hash elements\n    // defined in the parent view as well as those\n    // defined in the given behavior.\n    // This order will help the reuse and share of a behavior\n    // between multiple views, while letting a view override a\n    // selector under an UI key.\n    this.ui = _.extend({}, _.result(this, 'ui'), _.result(view, 'ui'));\n\n    MarionetteObject.apply(this, arguments);\n  },\n\n  // proxy behavior $ method to the view\n  // this is useful for doing jquery DOM lookups\n  // scoped to behaviors view.\n  $() {\n    return this.view.$.apply(this.view, arguments);\n  },\n\n  // Stops the behavior from listening to events.\n  // Overrides Object#destroy to prevent additional events from being triggered.\n  destroy() {\n    this.stopListening();\n\n    this.view._removeBehavior(this);\n\n    return this;\n  },\n\n  proxyViewProperties() {\n    this.$el = this.view.$el;\n    this.el = this.view.el;\n\n    return this;\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n\n    return this;\n  },\n\n  unbindUIElements() {\n    this._unbindUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  getEvents() {\n    // Normalize behavior events hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorEvents = this.normalizeUIKeys(_.result(this, 'events'));\n\n    // binds the handler to the behavior and builds a unique eventName\n    return _.reduce(behaviorEvents, (events, behaviorHandler, key) => {\n      if (!_.isFunction(behaviorHandler)) {\n        behaviorHandler = this[behaviorHandler];\n      }\n      if (!behaviorHandler) { return events; }\n      key = getNamespacedEventName(key, this.cid);\n      events[key] = _.bind(behaviorHandler, this);\n      return events;\n    }, {});\n  },\n\n  // Internal method to build all trigger handlers for a given behavior\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Normalize behavior triggers hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorTriggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    return this._getViewTriggers(this.view, behaviorTriggers);\n  }\n\n});\n\n_.extend(Behavior.prototype, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default Behavior;\n","// Application\n// -----------\nimport buildRegion from './common/build-region';\nimport MarionetteObject from './object';\nimport Region from './region';\n\nconst ClassOptions = [\n  'region',\n  'regionClass'\n];\n\n// A container for a Marionette application.\nconst Application = MarionetteObject.extend({\n  cidPrefix: 'mna',\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    this._initRegion();\n\n    MarionetteObject.prototype.constructor.apply(this, arguments);\n  },\n\n  regionClass: Region,\n\n  _initRegion() {\n    const region = this.region;\n\n    if (!region) { return; }\n\n    const defaults = {\n      regionClass: this.regionClass\n    };\n\n    this._region = buildRegion(region, defaults);\n  },\n\n  getRegion() {\n    return this._region;\n  },\n\n  showView(view, ...args) {\n    const region = this.getRegion();\n    return region.show(view, ...args);\n  },\n\n  getView() {\n    return this.getRegion().currentView;\n  },\n\n  // kick off all of the application's processes.\n  start(options) {\n    this.triggerMethod('before:start', this, options);\n    this.triggerMethod('start', this, options);\n    return this;\n  }\n\n});\n\nexport default Application;\n","// App Router\n// ----------\n\n// Reduce the boilerplate code of handling route events\n// and then calling a single method on another object,\n// called a controller.\n// Have your routers configured to call the method on\n// your controller, directly.\n//\n// Configure an AppRouter with `appRoutes`.\n//\n// App routers can only take one `controller` object.\n// It is recommended that you divide your controller\n// objects in to smaller pieces of related functionality\n// and have multiple routers / controllers, instead of\n// just one giant router and controller.\n//\n// You can also add standard routes to an AppRouter.\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from './common/trigger-method';\nimport MarionetteError from './error';\nimport CommonMixin from './mixins/common';\n\nconst ClassOptions = [\n  'appRoutes',\n  'controller'\n];\n\nconst AppRouter = Backbone.Router.extend({\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    Backbone.Router.apply(this, arguments);\n\n    const appRoutes = this.appRoutes;\n    const controller = this._getController();\n    this.processAppRoutes(controller, appRoutes);\n    this.on('route', this._processOnRoute, this);\n  },\n\n  // Similar to route method on a Backbone Router but\n  // method is called on the controller\n  appRoute(route, methodName) {\n    const controller = this._getController();\n    this._addAppRoute(controller, route, methodName);\n    return this;\n  },\n\n  // process the route event and trigger the onRoute\n  // method call, if it exists\n  _processOnRoute(routeName, routeArgs) {\n    // make sure an onRoute before trying to call it\n    if (_.isFunction(this.onRoute)) {\n      // find the path that matches the current route\n      const routePath = _.invert(this.appRoutes)[routeName];\n      this.onRoute(routeName, routePath, routeArgs);\n    }\n  },\n\n  // Internal method to process the `appRoutes` for the\n  // router, and turn them in to routes that trigger the\n  // specified method on the specified `controller`.\n  processAppRoutes(controller, appRoutes) {\n    if (!appRoutes) { return this; }\n\n    const routeNames = _.keys(appRoutes).reverse(); // Backbone requires reverted order of routes\n\n    _.each(routeNames, route => {\n      this._addAppRoute(controller, route, appRoutes[route]);\n    });\n\n    return this;\n  },\n\n  _getController() {\n    return this.controller;\n  },\n\n  _addAppRoute(controller, route, methodName) {\n    const method = controller[methodName];\n\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was not found on the controller`);\n    }\n\n    this.route(route, methodName, _.bind(method, controller));\n  },\n\n  triggerMethod: triggerMethod\n});\n\n_.extend(AppRouter.prototype, CommonMixin);\n\nexport default AppRouter;\n","import MarionetteError from '../error';\n\n// Placeholder method to be extended by the user.\n// The method should define the object that stores the behaviors.\n// i.e.\n//\n// ```js\n// Marionette.Behaviors.behaviorsLookup: function() {\n//   return App.Behaviors\n// }\n// ```\nexport default function behaviorsLookup() {\n  throw new MarionetteError({\n    message: 'You must define where your behaviors are stored.',\n    url: 'marionette.behaviors.md#behaviorslookup'\n  });\n}\n","import Backbone from 'backbone';\nimport {version} from '../package.json';\n\nimport proxy from './utils/proxy';\nimport extend from './utils/extend';\nimport deprecate from './utils/deprecate';\n\nimport isNodeAttached from './common/is-node-attached';\nimport mergeOptions from './common/merge-options';\nimport getOption from './common/get-option';\nimport normalizeMethods from './common/normalize-methods';\nimport monitorViewEvents from './common/monitor-view-events';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from './common/bind-events';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from './common/bind-requests';\n\nimport {\n  triggerMethod,\n  triggerMethodOn\n} from './common/trigger-method';\n\n\nimport MarionetteObject from './object';\nimport TemplateCache from './template-cache';\nimport View from './view';\nimport CollectionView from './collection-view';\nimport NextCollectionView from './next-collection-view';\nimport CompositeView from './composite-view';\nimport Behavior from './behavior';\nimport Region from './region';\nimport Application from './application';\nimport AppRouter from './app-router';\nimport MarionetteError from './error';\n\nimport behaviorsLookup from './config/behaviors-lookup';\nimport DomApi from './config/dom';\nimport Renderer from './config/renderer';\n\nimport {\n  FEATURES,\n  isEnabled,\n  setEnabled\n} from './config/features';\n\nconst previousMarionette = Backbone.Marionette;\nconst Marionette = Backbone.Marionette = {};\n\n// This allows you to run multiple instances of Marionette on the same\n// webapp. After loading the new version, call `noConflict()` to\n// get a reference to it. At the same time the old version will be\n// returned to Backbone.Marionette.\nMarionette.noConflict = function() {\n  Backbone.Marionette = previousMarionette;\n  return this;\n};\n\n// Utilities\nMarionette.bindEvents = proxy(bindEvents);\nMarionette.unbindEvents = proxy(unbindEvents);\nMarionette.bindRequests = proxy(bindRequests);\nMarionette.unbindRequests = proxy(unbindRequests);\nMarionette.mergeOptions = proxy(mergeOptions);\nMarionette.getOption = proxy(getOption);\nMarionette.normalizeMethods = proxy(normalizeMethods);\nMarionette.extend = extend;\nMarionette.isNodeAttached = isNodeAttached;\nMarionette.deprecate = deprecate;\nMarionette.triggerMethod = proxy(triggerMethod);\nMarionette.triggerMethodOn = triggerMethodOn;\nMarionette.isEnabled = isEnabled;\nMarionette.setEnabled = setEnabled;\nMarionette.monitorViewEvents = monitorViewEvents;\n\nMarionette.Behaviors = {};\nMarionette.Behaviors.behaviorsLookup = behaviorsLookup;\n\n// Classes\nMarionette.Application = Application;\nMarionette.AppRouter = AppRouter;\nMarionette.Renderer = Renderer;\nMarionette.TemplateCache = TemplateCache;\nMarionette.View = View;\nMarionette.CollectionView = CollectionView;\nMarionette.NextCollectionView = NextCollectionView;\nMarionette.CompositeView = CompositeView;\nMarionette.Behavior = Behavior;\nMarionette.Region = Region;\nMarionette.Error = MarionetteError;\nMarionette.Object = MarionetteObject;\n\n// Configuration\nMarionette.DEV_MODE = false;\nMarionette.FEATURES = FEATURES;\nMarionette.VERSION = version;\nMarionette.DomApi = DomApi;\nMarionette.setDomApi = function(mixin) {\n  CollectionView.setDomApi(mixin);\n  CompositeView.setDomApi(mixin);\n  NextCollectionView.setDomApi(mixin);\n  Region.setDomApi(mixin);\n  View.setDomApi(mixin);\n};\n\nexport default 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+{"version":3,"file":"backbone.marionette.js","sources":["src/utils/proxy.js","src/utils/extend.js","src/utils/deprecate.js","src/common/is-node-attached.js","src/common/merge-options.js","src/common/get-option.js","src/common/normalize-methods.js","src/common/trigger-method.js","src/common/monitor-view-events.js","src/error.js","src/common/bind-events.js","src/common/bind-requests.js","src/utils/set-options.js","src/mixins/common.js","src/mixins/radio.js","src/object.js","src/template-cache.js","src/utils/invoke.js","src/mixins/behaviors.js","src/mixins/delegate-entity-events.js","src/utils/get-namespaced-event-name.js","src/config/features.js","src/mixins/triggers.js","src/mixins/ui.js","src/config/dom.js","src/mixins/view.js","src/common/view.js","src/region.js","src/common/build-region.js","src/mixins/regions.js","src/config/renderer.js","src/view.js","src/utils/emulate-collection.js","src/child-view-container.js","src/collection-view.js","src/next-child-view-container.js","src/next-collection-view.js","src/composite-view.js","src/behavior.js","src/application.js","src/app-router.js","src/config/behaviors-lookup.js","src/backbone.marionette.js"],"sourcesContent":["//Internal utility for creating context style global utils\nconst proxy = function(method) {\n  return function(context, ...args) {\n    return method.apply(context, args);\n  };\n};\n\nexport default proxy;\n","// Marionette.extend\n// -----------------\n\nimport Backbone from 'backbone';\n\n// Borrow the Backbone `extend` method so we can use it as needed\nconst extend = Backbone.Model.extend;\n\nexport default extend;\n","/* global console */\n\nimport _ from 'underscore';\n\nimport Marionette from '../backbone.marionette';\n\nconst deprecate = function(message, test) {\n  if (_.isObject(message)) {\n    message = (\n      message.prev + ' is going to be removed in the future. ' +\n      'Please use ' + message.next + ' instead.' +\n      (message.url ? ' See: ' + message.url : '')\n    );\n  }\n\n  if (!Marionette.DEV_MODE) {\n    return;\n  }\n\n  if ((test === undefined || !test) && !deprecate._cache[message]) {\n    deprecate._warn('Deprecation warning: ' + message);\n    deprecate._cache[message] = true;\n  }\n};\n\n/* istanbul ignore next: can't clear console */\ndeprecate._console = typeof console !== 'undefined' ? console : {};\ndeprecate._warn = function() {\n  const warn = deprecate._console.warn || deprecate._console.log || _.noop;\n  return warn.apply(deprecate._console, arguments);\n};\ndeprecate._cache = {};\n\nexport default deprecate;\n","// Marionette.isNodeAttached\n// -------------------------\n\n// Determine if `el` is a child of the document\nconst isNodeAttached = function(el) {\n  return document.documentElement.contains(el && el.parentNode);\n};\n\nexport default isNodeAttached;\n","import _ from 'underscore';\n\n// Merge `keys` from `options` onto `this`\nconst mergeOptions = function(options, keys) {\n  if (!options) { return; }\n\n  _.each(keys, (key) => {\n    const option = options[key];\n    if (option !== undefined) {\n      this[key] = option;\n    }\n  });\n};\n\nexport default mergeOptions;\n","// Marionette.getOption\n// --------------------\n\n// Retrieve an object, function or other value from the\n// object or its `options`, with `options` taking precedence.\nconst getOption = function(optionName) {\n  if (!optionName) { return; }\n  if (this.options && (this.options[optionName] !== undefined)) {\n    return this.options[optionName];\n  } else {\n    return this[optionName];\n  }\n};\n\nexport default getOption;\n","import _ from 'underscore';\n\n// Marionette.normalizeMethods\n// ----------------------\n\n// Pass in a mapping of events => functions or function names\n// and return a mapping of events => functions\nconst normalizeMethods = function(hash) {\n  return _.reduce(hash, (normalizedHash, method, name) => {\n    if (!_.isFunction(method)) {\n      method = this[method];\n    }\n    if (method) {\n      normalizedHash[name] = method;\n    }\n    return normalizedHash;\n  }, {});\n};\n\nexport default normalizeMethods;\n","// Trigger Method\n// --------------\n\nimport _ from 'underscore';\nimport getOption from './get-option';\n\n// split the event name on the \":\"\nconst splitter = /(^|:)(\\w)/gi;\n\n// take the event section (\"section1:section2:section3\")\n// and turn it in to uppercase name onSection1Section2Section3\nfunction getEventName(match, prefix, eventName) {\n  return eventName.toUpperCase();\n}\n\nconst getOnMethodName = _.memoize(function(event) {\n  return 'on' + event.replace(splitter, getEventName);\n});\n\n// Trigger an event and/or a corresponding method name. Examples:\n//\n// `this.triggerMethod(\"foo\")` will trigger the \"foo\" event and\n// call the \"onFoo\" method.\n//\n// `this.triggerMethod(\"foo:bar\")` will trigger the \"foo:bar\" event and\n// call the \"onFooBar\" method.\nexport function triggerMethod(event, ...args) {\n  // get the method name from the event name\n  const methodName = getOnMethodName(event);\n  const method = getOption.call(this, methodName);\n  let result;\n\n  // call the onMethodName if it exists\n  if (_.isFunction(method)) {\n    // pass all args, except the event name\n    result = method.apply(this, args);\n  }\n\n  // trigger the event\n  this.trigger.apply(this, arguments);\n\n  return result;\n}\n\n// triggerMethodOn invokes triggerMethod on a specific context\n//\n// e.g. `Marionette.triggerMethodOn(view, 'show')`\n// will trigger a \"show\" event or invoke onShow the view.\nexport function triggerMethodOn(context, ...args) {\n  if (_.isFunction(context.triggerMethod)) {\n    return context.triggerMethod.apply(context, args);\n  }\n\n  return triggerMethod.apply(context, args);\n}\n","// DOM Refresh\n// -----------\n\nimport _ from 'underscore';\nimport { triggerMethodOn } from './trigger-method';\n\n// Trigger method on children unless a pure Backbone.View\nfunction triggerMethodChildren(view, event, shouldTrigger) {\n  if (!view._getImmediateChildren) { return; }\n  _.each(view._getImmediateChildren(), child => {\n    if (!shouldTrigger(child)) { return; }\n    triggerMethodOn(child, event, child);\n  });\n}\n\nfunction shouldTriggerAttach(view) {\n  return !view._isAttached;\n}\n\nfunction shouldAttach(view) {\n  if (!shouldTriggerAttach(view)) { return false; }\n  view._isAttached = true;\n  return true;\n}\n\nfunction shouldTriggerDetach(view) {\n  return view._isAttached;\n}\n\nfunction shouldDetach(view) {\n  if (!shouldTriggerDetach(view)) { return false; }\n  view._isAttached = false;\n  return true;\n}\n\nfunction triggerDOMRefresh(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:refresh', view);\n  }\n}\n\nfunction triggerDOMRemove(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:remove', view);\n  }\n}\n\nfunction handleBeforeAttach() {\n  triggerMethodChildren(this, 'before:attach', shouldTriggerAttach);\n}\n\nfunction handleAttach() {\n  triggerMethodChildren(this, 'attach', shouldAttach);\n  triggerDOMRefresh(this);\n}\n\nfunction handleBeforeDetach() {\n  triggerMethodChildren(this, 'before:detach', shouldTriggerDetach);\n  triggerDOMRemove(this);\n}\n\nfunction handleDetach() {\n  triggerMethodChildren(this, 'detach', shouldDetach);\n}\n\nfunction handleBeforeRender() {\n  triggerDOMRemove(this);\n}\n\nfunction handleRender() {\n  triggerDOMRefresh(this);\n}\n\n// Monitor a view's state, propagating attach/detach events to children and firing dom:refresh\n// whenever a rendered view is attached or an attached view is rendered.\nfunction monitorViewEvents(view) {\n  if (view._areViewEventsMonitored || view.monitorViewEvents === false) { return; }\n\n  view._areViewEventsMonitored = true;\n\n  view.on({\n    'before:attach': handleBeforeAttach,\n    'attach': handleAttach,\n    'before:detach': handleBeforeDetach,\n    'detach': handleDetach,\n    'before:render': handleBeforeRender,\n    'render': handleRender\n  });\n}\n\nexport default monitorViewEvents;\n","// Error\n// -----\n\nimport _ from 'underscore';\nimport extend from './utils/extend';\nimport {version} from '../package.json';\n\nconst errorProps = ['description', 'fileName', 'lineNumber', 'name', 'message', 'number'];\n\nconst MarionetteError = extend.call(Error, {\n  urlRoot: `http://marionettejs.com/docs/v${version}/`,\n\n  constructor(message, options) {\n    if (_.isObject(message)) {\n      options = message;\n      message = options.message;\n    } else if (!options) {\n      options = {};\n    }\n\n    const error = Error.call(this, message);\n    _.extend(this, _.pick(error, errorProps), _.pick(options, errorProps));\n\n    this.captureStackTrace();\n\n    if (options.url) {\n      this.url = this.urlRoot + options.url;\n    }\n  },\n\n  captureStackTrace() {\n    if (Error.captureStackTrace) {\n      Error.captureStackTrace(this, MarionetteError);\n    }\n  },\n\n  toString() {\n    return this.name + ': ' + this.message + (this.url ? ' See: ' + this.url : '');\n  }\n});\n\nMarionetteError.extend = extend;\n\nexport default MarionetteError;\n","// Bind Entity Events & Unbind Entity Events\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone \"entity\" (e.g. collection/model)\n// to methods on a target object.\n//\n// The first parameter, `target`, must have the Backbone.Events module mixed in.\n//\n// The second parameter is the `entity` (Backbone.Model, Backbone.Collection or\n// any object that has Backbone.Events mixed in) to bind the events from.\n//\n// The third parameter is a hash of { \"event:name\": \"eventHandler\" }\n// configuration. Multiple handlers can be separated by a space. A\n// function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\n\n// Bind/unbind the event to handlers specified as a string of\n// handler names on the target object\nfunction bindFromStrings(target, entity, evt, methods, actionName) {\n  const methodNames = methods.split(/\\s+/);\n\n  if (methodNames.length > 1) {\n    deprecate('Multiple handlers for a single event are deprecated. If needed, use a single handler to call multiple methods.')\n  }\n\n  _.each(methodNames, function(methodName) {\n    const method = target[methodName];\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was configured as an event handler, but does not exist.`);\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\n// generic looping function\nfunction iterateEvents(target, entity, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindevents'\n    });\n  }\n\n  // iterate the bindings and bind/unbind them\n  _.each(bindings, function(method, evt) {\n\n    // allow for a list of method names as a string\n    if (_.isString(method)) {\n      bindFromStrings(target, entity, evt, method, actionName);\n      return;\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\nfunction bindEvents(entity, bindings) {\n  if (!entity || !bindings) { return this; }\n\n  iterateEvents(this, entity, bindings, 'listenTo');\n  return this;\n}\n\nfunction unbindEvents(entity, bindings) {\n  if (!entity) { return this; }\n\n  if (!bindings) {\n    this.stopListening(entity);\n    return this;\n  }\n\n  iterateEvents(this, entity, bindings, 'stopListening');\n  return this;\n}\n\n// Export Public API\nexport {\n  bindEvents,\n  unbindEvents\n};\n","// Bind/Unbind Radio Requests\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone.radio request\n// to methods on a target object.\n//\n// The first parameter, `target`, will set the context of the reply method\n//\n// The second parameter is the `Radio.channel` to bind the reply to.\n//\n// The third parameter is a hash of { \"request:name\": \"replyHandler\" }\n// configuration. A function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport normalizeMethods from './normalize-methods';\nimport MarionetteError from '../error';\n\nfunction iterateReplies(target, channel, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindrequests'\n    });\n  }\n\n  const normalizedRadioRequests = normalizeMethods.call(target, bindings);\n\n  channel[actionName](normalizedRadioRequests, target);\n}\n\nfunction bindRequests(channel, bindings) {\n  if (!channel || !bindings) { return this; }\n\n  iterateReplies(this, channel, bindings, 'reply');\n  return this;\n}\n\nfunction unbindRequests(channel, bindings) {\n  if (!channel) { return this; }\n\n  if (!bindings) {\n    channel.stopReplying(null, null, this);\n    return this;\n  }\n\n  iterateReplies(this, channel, bindings, 'stopReplying');\n  return this;\n}\n\nexport {\n  bindRequests,\n  unbindRequests\n};\n","import _ from 'underscore';\n\n// Internal utility for setting options consistently across Mn\nconst setOptions = function(options) {\n  this.options = _.extend({}, _.result(this, 'options'), options);\n};\n\nexport default setOptions;\n","import _setOptions from '../utils/set-options';\nimport getOption from '../common/get-option';\nimport mergeOptions from '../common/merge-options';\nimport normalizeMethods from '../common/normalize-methods';\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nexport default {\n\n  // Imports the \"normalizeMethods\" to transform hashes of\n  // events=>function references/names to a hash of events=>function references\n  normalizeMethods,\n\n  _setOptions,\n\n  // A handy way to merge passed-in options onto the instance\n  mergeOptions,\n\n  // Enable getting options from this or this.options by name.\n  getOption,\n\n  // Enable binding view's events from another entity.\n  bindEvents,\n\n  // Enable unbinding view's events from another entity.\n  unbindEvents\n};\n","import _ from 'underscore';\nimport Radio from 'backbone.radio';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from '../common/bind-requests';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nimport MarionetteError from '../error';\n\n// MixinOptions\n// - channelName\n// - radioEvents\n// - radioRequests\n\nexport default {\n\n  _initRadio() {\n    const channelName = _.result(this, 'channelName');\n\n    if (!channelName) {\n      return;\n    }\n\n    /* istanbul ignore next */\n    if (!Radio) {\n      throw new MarionetteError({\n        name: 'BackboneRadioMissing',\n        message: 'The dependency \"backbone.radio\" is missing.'\n      });\n    }\n\n    const channel = this._channel = Radio.channel(channelName);\n\n    const radioEvents = _.result(this, 'radioEvents');\n    this.bindEvents(channel, radioEvents);\n\n    const radioRequests = _.result(this, 'radioRequests');\n    this.bindRequests(channel, radioRequests);\n\n    this.on('destroy', this._destroyRadio);\n  },\n\n  _destroyRadio() {\n    this._channel.stopReplying(null, null, this);\n  },\n\n  getChannel() {\n    return this._channel;\n  },\n\n  // Proxy `bindEvents`\n  bindEvents: bindEvents,\n\n  // Proxy `unbindEvents`\n  unbindEvents: unbindEvents,\n\n  // Proxy `bindRequests`\n  bindRequests: bindRequests,\n\n  // Proxy `unbindRequests`\n  unbindRequests: unbindRequests\n\n};\n","// Object\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport extend from './utils/extend';\nimport { triggerMethod } from './common/trigger-method';\nimport CommonMixin from './mixins/common';\nimport RadioMixin from './mixins/radio';\n\nconst ClassOptions = [\n  'channelName',\n  'radioEvents',\n  'radioRequests'\n];\n\n// A Base Class that other Classes should descend from.\n// Object borrows many conventions and utilities from Backbone.\nconst MarionetteObject = function(options) {\n  if (!this.hasOwnProperty('options')) {\n    this._setOptions(options);\n  }\n  this.mergeOptions(options, ClassOptions);\n  this._setCid();\n  this._initRadio();\n  this.initialize.apply(this, arguments);\n};\n\nMarionetteObject.extend = extend;\n\n// Object Methods\n// --------------\n\n// Ensure it can trigger events with Backbone.Events\n_.extend(MarionetteObject.prototype, Backbone.Events, CommonMixin, RadioMixin, {\n  cidPrefix: 'mno',\n\n  // for parity with Marionette.AbstractView lifecyle\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return this._isDestroyed;\n  },\n\n  //this is a noop method intended to be overridden by classes that extend from this base\n  initialize() {},\n\n  _setCid() {\n    if (this.cid) { return; }\n    this.cid = _.uniqueId(this.cidPrefix);\n  },\n\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:destroy', this, ...args);\n\n    this._isDestroyed = true;\n    this.triggerMethod('destroy', this, ...args);\n    this.stopListening();\n\n    return this;\n  },\n\n  triggerMethod\n});\n\nexport default MarionetteObject;\n","// Template Cache\n// --------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport MarionetteError from './error';\n\n// Manage templates stored in `<script>` blocks,\n// caching them for faster access.\nconst TemplateCache = function(templateId) {\n  this.templateId = templateId;\n};\n\n// TemplateCache object-level methods. Manage the template\n// caches from these method calls instead of creating\n// your own TemplateCache instances\n_.extend(TemplateCache, {\n\n  templateCaches: {},\n\n  // Get the specified template by id. Either\n  // retrieves the cached version, or loads it\n  // from the DOM.\n  get(templateId, options) {\n    let cachedTemplate = this.templateCaches[templateId];\n\n    if (!cachedTemplate) {\n      cachedTemplate = new TemplateCache(templateId);\n      this.templateCaches[templateId] = cachedTemplate;\n    }\n\n    return cachedTemplate.load(options);\n  },\n\n  // Clear templates from the cache. If no arguments\n  // are specified, clears all templates:\n  // `clear()`\n  //\n  // If arguments are specified, clears each of the\n  // specified templates from the cache:\n  // `clear(\"#t1\", \"#t2\", \"...\")`\n  clear(...args) {\n    let i;\n    const length = args.length;\n\n    if (length > 0) {\n      for (i = 0; i < length; i++) {\n        delete this.templateCaches[args[i]];\n      }\n    } else {\n      this.templateCaches = {};\n    }\n  }\n});\n\n// TemplateCache instance methods, allowing each\n// template cache object to manage its own state\n// and know whether or not it has been loaded\n_.extend(TemplateCache.prototype, {\n\n  // Internal method to load the template\n  load(options) {\n    // Guard clause to prevent loading this template more than once\n    if (this.compiledTemplate) {\n      return this.compiledTemplate;\n    }\n\n    // Load the template and compile it\n    const template = this.loadTemplate(this.templateId, options);\n    this.compiledTemplate = this.compileTemplate(template, options);\n\n    return this.compiledTemplate;\n  },\n\n  // Load a template from the DOM, by default. Override\n  // this method to provide your own template retrieval\n  // For asynchronous loading with AMD/RequireJS, consider\n  // using a template-loader plugin as described here:\n  // https://github.com/marionettejs/backbone.marionette/wiki/Using-marionette-with-requirejs\n  loadTemplate(templateId, options) {\n    const $template = Backbone.$(templateId);\n\n    if (!$template.length) {\n      throw new MarionetteError({\n        name: 'NoTemplateError',\n        message: `Could not find template: \"${templateId}\"`\n      });\n    }\n    return $template.html();\n  },\n\n  // Pre-compile the template before caching it. Override\n  // this method if you do not need to pre-compile a template\n  // (JST / RequireJS for example) or if you want to change\n  // the template engine used (Handebars, etc).\n  compileTemplate(rawTemplate, options) {\n    return _.template(rawTemplate, options);\n  }\n});\n\nexport default TemplateCache;\n","// Implementation of the invoke method (http://underscorejs.org/#invoke) with support for\n// lodash v3, v4, and underscore.js\nimport _ from 'underscore';\n\nexport default _.invokeMap || _.invoke;\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport { triggerMethod } from '../common/trigger-method';\nimport Marionette from '../backbone.marionette';\n\n// MixinOptions\n// - behaviors\n\n// Takes care of getting the behavior class\n// given options and a key.\n// If a user passes in options.behaviorClass\n// default to using that.\n// If a user passes in a Behavior Class directly, use that\n// Otherwise delegate the lookup to the users `behaviorsLookup` implementation.\nfunction getBehaviorClass(options, key) {\n  if (options.behaviorClass) {\n    return options.behaviorClass;\n    //treat functions as a Behavior constructor\n  } else if (_.isFunction(options)) {\n    return options;\n  }\n\n  // behaviorsLookup can be either a flat object or a method\n  if (_.isFunction(Marionette.Behaviors.behaviorsLookup)) {\n    return Marionette.Behaviors.behaviorsLookup(options, key)[key];\n  }\n\n  return Marionette.Behaviors.behaviorsLookup[key];\n}\n\n// Iterate over the behaviors object, for each behavior\n// instantiate it and get its grouped behaviors.\n// This accepts a list of behaviors in either an object or array form\nfunction parseBehaviors(view, behaviors) {\n  return _.chain(behaviors).map(function(options, key) {\n    const BehaviorClass = getBehaviorClass(options, key);\n    //if we're passed a class directly instead of an object\n    const _options = options === BehaviorClass ? {} : options;\n    const behavior = new BehaviorClass(_options, view);\n    const nestedBehaviors = parseBehaviors(view, _.result(behavior, 'behaviors'));\n\n    return [behavior].concat(nestedBehaviors);\n  }).flatten().value();\n}\n\nexport default {\n  _initBehaviors() {\n    this._behaviors = this._getBehaviors();\n  },\n\n  _getBehaviors() {\n    const behaviors = _.result(this, 'behaviors');\n\n    // Behaviors defined on a view can be a flat object literal\n    // or it can be a function that returns an object.\n    return _.isObject(behaviors) ? parseBehaviors(this, behaviors) : {};\n  },\n\n  _getBehaviorTriggers() {\n    const triggers = _invoke(this._behaviors, 'getTriggers');\n    return _.reduce(triggers, function(memo, _triggers) {\n      return _.extend(memo, _triggers);\n    }, {});\n  },\n\n  _getBehaviorEvents() {\n    const events = _invoke(this._behaviors, 'getEvents');\n    return _.reduce(events, function(memo, _events) {\n      return _.extend(memo, _events);\n    }, {});\n  },\n\n  // proxy behavior $el to the view's $el.\n  _proxyBehaviorViewProperties() {\n    _invoke(this._behaviors, 'proxyViewProperties');\n  },\n\n  // delegate modelEvents and collectionEvents\n  _delegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'delegateEntityEvents');\n  },\n\n  // undelegate modelEvents and collectionEvents\n  _undelegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'undelegateEntityEvents');\n  },\n\n  _destroyBehaviors(...args) {\n    // Call destroy on each behavior after\n    // destroying the view.\n    // This unbinds event listeners\n    // that behaviors have registered for.\n    _invoke(this._behaviors, 'destroy', ...args);\n  },\n\n  // Remove a behavior\n  _removeBehavior(behavior) {\n    // Don't worry about the clean up if the view is destroyed\n    if (this._isDestroyed) { return; }\n\n    // Remove behavior-only triggers and events\n    this.undelegate(`.trig${ behavior.cid } .${ behavior.cid }`);\n\n    this._behaviors = _.without(this._behaviors, behavior);\n  },\n\n  _bindBehaviorUIElements() {\n    _invoke(this._behaviors, 'bindUIElements');\n  },\n\n  _unbindBehaviorUIElements() {\n    _invoke(this._behaviors, 'unbindUIElements');\n  },\n\n  _triggerEventOnBehaviors() {\n    const behaviors = this._behaviors;\n    // Use good ol' for as this is a very hot function\n    for (let i = 0, length = behaviors && behaviors.length; i < length; i++) {\n      triggerMethod.apply(behaviors[i], arguments);\n    }\n  }\n};\n","import _ from 'underscore';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\n// MixinOptions\n// - collectionEvents\n// - modelEvents\n\nexport default {\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  _delegateEntityEvents(model, collection) {\n    const modelEvents = _.result(this, 'modelEvents');\n\n    if (modelEvents) {\n      unbindEvents.call(this, model, modelEvents);\n      bindEvents.call(this, model, modelEvents);\n    }\n\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n\n    if (collectionEvents) {\n      unbindEvents.call(this, collection, collectionEvents);\n      bindEvents.call(this, collection, collectionEvents);\n    }\n  },\n\n  _undelegateEntityEvents(model, collection) {\n    const modelEvents = _.result(this, 'modelEvents');\n    unbindEvents.call(this, model, modelEvents);\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n    unbindEvents.call(this, collection, collectionEvents);\n  }\n};\n","// Borrow event splitter from Backbone\nconst delegateEventSplitter = /^(\\S+)\\s*(.*)$/;\n\n// Set event name to be namespaced using a unique index\n// to generate a non colliding event namespace\n// http://api.jquery.com/event.namespace/\nconst getNamespacedEventName = function(eventName, namespace) {\n  const match = eventName.match(delegateEventSplitter);\n  return `${ match[1] }.${ namespace } ${ match[2] }`;\n};\n\nexport default getNamespacedEventName;\n","// Add Feature flags here\n// e.g. 'class' => false\nconst FEATURES = {\n  childViewEventPrefix: true,\n  triggersStopPropagation: true,\n  triggersPreventDefault: true\n};\n\nfunction isEnabled(name) {\n  return !!FEATURES[name];\n}\n\nfunction setEnabled(name, state) {\n  return FEATURES[name] = state;\n}\n\nexport {\n  FEATURES,\n  setEnabled,\n  isEnabled\n};\n","import _ from 'underscore';\nimport getNamespacedEventName from '../utils/get-namespaced-event-name';\nimport { isEnabled } from '../config/features';\n\n// Internal method to create an event handler for a given `triggerDef` like\n// 'click:foo'\nfunction buildViewTrigger(view, triggerDef) {\n  if (_.isString(triggerDef)) {\n    triggerDef = {event: triggerDef};\n  }\n\n  const eventName = triggerDef.event;\n\n  let shouldPreventDefault = !!triggerDef.preventDefault;\n\n  if (isEnabled('triggersPreventDefault')) {\n    shouldPreventDefault = triggerDef.preventDefault !== false;\n  }\n\n  let shouldStopPropagation = !!triggerDef.stopPropagation;\n\n  if (isEnabled('triggersStopPropagation')) {\n    shouldStopPropagation = triggerDef.stopPropagation !== false;\n  }\n\n  return function(event) {\n    if (shouldPreventDefault) {\n      event.preventDefault();\n    }\n\n    if (shouldStopPropagation) {\n      event.stopPropagation();\n    }\n\n    view.triggerMethod(eventName, view, event);\n  };\n}\n\nexport default {\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  _getViewTriggers(view, triggers) {\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return _.reduce(triggers, (events, value, key) => {\n      key = getNamespacedEventName(key, `trig${ this.cid }`);\n      events[key] = buildViewTrigger(view, value);\n      return events;\n    }, {});\n  }\n\n};\n","import _ from 'underscore';\n// allows for the use of the @ui. syntax within\n// a given key for triggers and events\n// swaps the @ui with the associated selector.\n// Returns a new, non-mutated, parsed events hash.\nconst normalizeUIKeys = function(hash, ui) {\n  return _.reduce(hash, (memo, val, key) => {\n    const normalizedKey = normalizeUIString(key, ui);\n    memo[normalizedKey] = val;\n    return memo;\n  }, {});\n};\n\n// utility method for parsing @ui. syntax strings\n// into associated selector\nconst normalizeUIString = function(uiString, ui) {\n  return uiString.replace(/@ui\\.[a-zA-Z-_$0-9]*/g, (r) => {\n    return ui[r.slice(4)];\n  });\n};\n\n// allows for the use of the @ui. syntax within\n// a given value for regions\n// swaps the @ui with the associated selector\nconst normalizeUIValues = function(hash, ui, properties) {\n  _.each(hash, (val, key) => {\n    if (_.isString(val)) {\n      hash[key] = normalizeUIString(val, ui);\n    } else if (_.isObject(val) && _.isArray(properties)) {\n      _.extend(val, normalizeUIValues(_.pick(val, properties), ui));\n      /* Value is an object, and we got an array of embedded property names to normalize. */\n      _.each(properties, (property) => {\n        const propertyVal = val[property];\n        if (_.isString(propertyVal)) {\n          val[property] = normalizeUIString(propertyVal, ui);\n        }\n      });\n    }\n  });\n  return hash;\n};\n\nexport default {\n\n  // normalize the keys of passed hash with the views `ui` selectors.\n  // `{\"@ui.foo\": \"bar\"}`\n  normalizeUIKeys(hash) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIKeys(hash, uiBindings);\n  },\n\n  // normalize the passed string with the views `ui` selectors.\n  // `\"@ui.bar\"`\n  normalizeUIString(uiString) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIString(uiString, uiBindings);\n  },\n\n  // normalize the values of passed hash with the views `ui` selectors.\n  // `{foo: \"@ui.bar\"}`\n  normalizeUIValues(hash, properties) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIValues(hash, uiBindings, properties);\n  },\n\n  _getUIBindings() {\n    const uiBindings = _.result(this, '_uiBindings');\n    const ui = _.result(this, 'ui');\n    return uiBindings || ui;\n  },\n\n  // This method binds the elements specified in the \"ui\" hash inside the view's code with\n  // the associated jQuery selectors.\n  _bindUIElements() {\n    if (!this.ui) { return; }\n\n    // store the ui hash in _uiBindings so they can be reset later\n    // and so re-rendering the view will be able to find the bindings\n    if (!this._uiBindings) {\n      this._uiBindings = this.ui;\n    }\n\n    // get the bindings result, as a function or otherwise\n    const bindings = _.result(this, '_uiBindings');\n\n    // empty the ui so we don't have anything to start with\n    this._ui = {};\n\n    // bind each of the selectors\n    _.each(bindings, (selector, key) => {\n      this._ui[key] = this.$(selector);\n    });\n\n    this.ui = this._ui;\n  },\n\n  _unbindUIElements() {\n    if (!this.ui || !this._uiBindings) { return; }\n\n    // delete all of the existing ui bindings\n    _.each(this.ui, ($el, name) => {\n      delete this.ui[name];\n    });\n\n    // reset the ui element to the original bindings configuration\n    this.ui = this._uiBindings;\n    delete this._uiBindings;\n    delete this._ui;\n  },\n\n  _getUI(name) {\n    return this._ui[name];\n  }\n};\n","// DomApi\n//  ---------\nimport _ from 'underscore';\nimport Backbone from 'backbone';\n\n// Performant method for returning the jQuery instance\nfunction getEl(el) {\n  return el instanceof Backbone.$ ? el : Backbone.$(el);\n}\n\n// Static setter\nexport function setDomApi(mixin) {\n  this.prototype.Dom = _.extend({}, this.prototype.Dom, mixin);\n  return this;\n}\n\nexport default {\n\n  // Returns a new HTML DOM node instance\n  createBuffer() {\n    return document.createDocumentFragment();\n  },\n\n  // Lookup the `selector` string\n  // Selector may also be a DOM element\n  // Returns an array-like object of nodes\n  getEl(selector) {\n    return getEl(selector);\n  },\n\n  // Finds the `selector` string with the el\n  // Returns an array-like object of nodes\n  findEl(el, selector, _$el = getEl(el)) {\n    return _$el.find(selector);\n  },\n\n  // Returns true if the el contains the node childEl\n  hasEl(el, childEl) {\n    return el.contains(childEl && childEl.parentNode);\n  },\n\n  // Detach `el` from the DOM without removing listeners\n  detachEl(el, _$el = getEl(el)) {\n    _$el.detach();\n  },\n\n  // Remove `oldEl` from the DOM and put `newEl` in its place\n  replaceEl(newEl, oldEl) {\n    if (newEl === oldEl) {\n      return;\n    }\n\n    const parent = oldEl.parentNode;\n\n    if (!parent) {\n      return;\n    }\n\n    parent.replaceChild(newEl, oldEl);\n  },\n\n  // Swaps the location of `el1` and `el2` in the DOM\n  swapEl(el1, el2) {\n    if (el1 === el2) {\n      return;\n    }\n\n    const parent1 = el1.parentNode;\n    const parent2 = el2.parentNode;\n\n    if (!parent1 || !parent2) {\n      return;\n    }\n\n    const next1 = el1.nextSibling;\n    const next2 = el2.nextSibling;\n\n    parent1.insertBefore(el2, next1);\n    parent2.insertBefore(el1, next2);\n  },\n\n  // Replace the contents of `el` with the HTML string of `html`\n  setContents(el, html, _$el = getEl(el)) {\n    _$el.html(html);\n  },\n\n  // Takes the DOM node `el` and appends the DOM node `contents`\n  // to the end of the element's contents.\n  appendContents(el, contents, {_$el = getEl(el), _$contents = getEl(contents)} = {}) {\n    _$el.append(_$contents);\n  },\n\n  // Does the el have child nodes\n  hasContents(el) {\n    return !!el && el.hasChildNodes();\n  },\n\n  // Remove the inner contents of `el` from the DOM while leaving\n  // `el` itself in the DOM.\n  detachContents(el, _$el = getEl(el)) {\n    _$el.contents().detach();\n  }\n};\n","// ViewMixin\n//  ---------\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from '../common/trigger-method';\nimport BehaviorsMixin from './behaviors';\nimport CommonMixin from './common';\nimport DelegateEntityEventsMixin from './delegate-entity-events';\nimport TriggersMixin from './triggers';\nimport UIMixin from './ui';\nimport { isEnabled } from '../config/features';\nimport DomApi from '../config/dom';\n\n// MixinOptions\n// - behaviors\n// - childViewEventPrefix\n// - childViewEvents\n// - childViewTriggers\n// - collectionEvents\n// - modelEvents\n// - triggers\n// - ui\n\n\nconst ViewMixin = {\n  Dom: DomApi,\n\n  supportsRenderLifecycle: true,\n  supportsDestroyLifecycle: true,\n\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return !!this._isDestroyed;\n  },\n\n  _isRendered: false,\n\n  isRendered() {\n    return !!this._isRendered;\n  },\n\n  _isAttached: false,\n\n  isAttached() {\n    return !!this._isAttached;\n  },\n\n  // Overriding Backbone.View's `delegateEvents` to handle\n  // `events` and `triggers`\n  delegateEvents(eventsArg) {\n\n    this._proxyBehaviorViewProperties();\n    this._buildEventProxies();\n\n    const viewEvents = this._getEvents(eventsArg);\n\n    if (typeof eventsArg === 'undefined') {\n      this.events = viewEvents;\n    }\n\n    const combinedEvents = _.extend({},\n      this._getBehaviorEvents(),\n      viewEvents,\n      this._getBehaviorTriggers(),\n      this.getTriggers()\n    );\n\n    Backbone.View.prototype.delegateEvents.call(this, combinedEvents);\n\n    return this;\n  },\n\n  _getEvents(eventsArg) {\n    const events = eventsArg || this.events;\n\n    if (_.isFunction(events)) {\n      return this.normalizeUIKeys(events.call(this));\n    }\n\n    return this.normalizeUIKeys(events);\n  },\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Allow `triggers` to be configured as a function\n    const triggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return this._getViewTriggers(this, triggers);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.model, this.collection);\n\n    // bind each behaviors model and collection events\n    this._delegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle unbinding `modelEvents`, and `collectionEvents` configuration\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.model, this.collection);\n\n    // unbind each behaviors model and collection events\n    this._undelegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle destroying the view and its children.\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n    const shouldTriggerDetach = this._isAttached && !this._shouldDisableEvents;\n\n    this.triggerMethod('before:destroy', this, ...args);\n    if (shouldTriggerDetach) {\n      this.triggerMethod('before:detach', this);\n    }\n\n    // unbind UI elements\n    this.unbindUIElements();\n\n    // remove the view from the DOM\n    this._removeElement();\n\n    if (shouldTriggerDetach) {\n      this._isAttached = false;\n      this.triggerMethod('detach', this);\n    }\n\n    // remove children after the remove to prevent extra paints\n    this._removeChildren();\n\n    this._isDestroyed = true;\n    this._isRendered = false;\n\n    // Destroy behaviors after _isDestroyed flag\n    this._destroyBehaviors(...args);\n\n    this.triggerMethod('destroy', this, ...args);\n\n    this.stopListening();\n\n    return this;\n  },\n\n  // Equates to this.$el.remove\n  _removeElement() {\n    this.$el.off().removeData();\n    this.Dom.detachEl(this.el, this.$el);\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n    this._bindBehaviorUIElements();\n\n    return this;\n  },\n\n  // This method unbinds the elements specified in the \"ui\" hash\n  unbindUIElements() {\n    this._unbindUIElements();\n    this._unbindBehaviorUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // used as the prefix for child view events\n  // that are forwarded through the layoutview\n  childViewEventPrefix() {\n    return isEnabled('childViewEventPrefix') ? 'childview' : false;\n  },\n\n  // import the `triggerMethod` to trigger events with corresponding\n  // methods if the method exists\n  triggerMethod() {\n    const ret = triggerMethod.apply(this, arguments);\n\n    this._triggerEventOnBehaviors.apply(this, arguments);\n\n    return ret;\n  },\n\n  // Cache `childViewEvents` and `childViewTriggers`\n  _buildEventProxies() {\n    this._childViewEvents = _.result(this, 'childViewEvents');\n    this._childViewTriggers = _.result(this, 'childViewTriggers');\n  },\n\n  _proxyChildViewEvents(view) {\n    this.listenTo(view, 'all', this._childViewEventHandler);\n  },\n\n  _childViewEventHandler(eventName, ...args) {\n    const childViewEvents = this.normalizeMethods(this._childViewEvents);\n\n    // call collectionView childViewEvent if defined\n    if (typeof childViewEvents !== 'undefined' && _.isFunction(childViewEvents[eventName])) {\n      childViewEvents[eventName].apply(this, args);\n    }\n\n    // use the parent view's proxyEvent handlers\n    const childViewTriggers = this._childViewTriggers;\n\n    // Call the event with the proxy name on the parent layout\n    if (childViewTriggers && _.isString(childViewTriggers[eventName])) {\n      this.triggerMethod(childViewTriggers[eventName], ...args);\n    }\n\n    const prefix = _.result(this, 'childViewEventPrefix');\n\n    if (prefix !== false) {\n      const childEventName = prefix + ':' + eventName;\n\n      this.triggerMethod(childEventName, ...args);\n    }\n  }\n};\n\n_.extend(ViewMixin, BehaviorsMixin, CommonMixin, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default ViewMixin;\n","import { triggerMethodOn } from '../common/trigger-method';\n\nexport function renderView(view) {\n  if (view._isRendered) {\n    return;\n  }\n\n  if (!view.supportsRenderLifecycle) {\n    triggerMethodOn(view, 'before:render', view);\n  }\n\n  view.render();\n\n  if (!view.supportsRenderLifecycle) {\n    view._isRendered = true;\n    triggerMethodOn(view, 'render', view);\n  }\n}\n\nexport function destroyView(view) {\n  if (view.destroy) {\n    view.destroy();\n    return;\n  }\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'before:destroy', view);\n  }\n\n  const shouldTriggerDetach = view._isAttached && !view._shouldDisableEvents;\n\n  if (shouldTriggerDetach) {\n    triggerMethodOn(view, 'before:detach', view);\n  }\n\n  view.remove();\n\n  if (shouldTriggerDetach) {\n    view._isAttached = false;\n    triggerMethodOn(view, 'detach', view);\n  }\n\n  view._isDestroyed = true;\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'destroy', view);\n  }\n}\n","// Region\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport { renderView, destroyView } from './common/view';\nimport monitorViewEvents from './common/monitor-view-events';\nimport isNodeAttached from './common/is-node-attached';\nimport { triggerMethodOn } from './common/trigger-method';\nimport MarionetteObject from './object';\nimport MarionetteError from './error';\nimport View from './view';\nimport DomApi, { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'allowMissingEl',\n  'parentEl',\n  'replaceElement'\n];\n\nconst Region = MarionetteObject.extend({\n  Dom: DomApi,\n\n  cidPrefix: 'mnr',\n  replaceElement: false,\n  _isReplaced: false,\n  _isSwappingView: false,\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    // getOption necessary because options.el may be passed as undefined\n    this._initEl = this.el = this.getOption('el');\n\n    // Handle when this.el is passed in as a $ wrapped element.\n    this.el = this.el instanceof Backbone.$ ? this.el[0] : this.el;\n\n    if (!this.el) {\n      throw new MarionetteError({\n        name: 'NoElError',\n        message: 'An \"el\" must be specified for a region.'\n      });\n    }\n\n    this.$el = this.getEl(this.el);\n    MarionetteObject.call(this, options);\n  },\n\n  // Displays a backbone view instance inside of the region. Handles calling the `render`\n  // method for you. Reads content directly from the `el` attribute. The `preventDestroy`\n  // option can be used to prevent a view from the old view being destroyed on show.\n  show(view, options) {\n    if (!this._ensureElement(options)) {\n      return;\n    }\n\n    view = this._getView(view, options);\n\n    if (view === this.currentView) { return this; }\n\n    this._isSwappingView = !!this.currentView;\n\n    this.triggerMethod('before:show', this, view, options);\n\n    // Assume an attached view is already in the region for pre-existing DOM\n    if (!view._isAttached) {\n      this.empty(options);\n    }\n\n    this._setupChildView(view);\n\n    this.currentView = view;\n\n    renderView(view);\n\n    this._attachView(view, options);\n\n    this.triggerMethod('show', this, view, options);\n\n    this._isSwappingView = false;\n\n    return this;\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    this._proxyChildViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other than through the region.\n    // If this happens we need to remove the reference to the currentView since once a view\n    // has been destroyed we can not reuse it.\n    view.on('destroy', this._empty, this);\n  },\n\n  _proxyChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    parentView._proxyChildViewEvents(view);\n  },\n\n  // If the regions parent view is not monitoring its attach/detach events\n  _shouldDisableMonitoring() {\n    return this._parentView && this._parentView.monitorViewEvents === false;\n  },\n\n  _attachView(view, options = {}) {\n    const shouldTriggerAttach = !view._isAttached && isNodeAttached(this.el) && !this._shouldDisableMonitoring();\n    const shouldReplaceEl = typeof options.replaceElement === 'undefined' ? !!_.result(this, 'replaceElement') : !!options.replaceElement;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    if (shouldReplaceEl) {\n      this._replaceEl(view);\n    } else {\n      this.attachHtml(view);\n    }\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  _ensureElement(options = {}) {\n    if (!_.isObject(this.el)) {\n      this.$el = this.getEl(this.el);\n      this.el = this.$el[0];\n      // Make sure the $el contains only the el\n      this.$el = this.Dom.getEl(this.el);\n    }\n\n    if (!this.$el || this.$el.length === 0) {\n      const allowMissingEl = typeof options.allowMissingEl === 'undefined' ? !!_.result(this, 'allowMissingEl') : !!options.allowMissingEl;\n\n      if (allowMissingEl) {\n        return false;\n      } else {\n        throw new MarionetteError(`An \"el\" must exist in DOM for this region ${this.cid}`);\n      }\n    }\n    return true;\n  },\n\n  _getView(view) {\n    if (!view) {\n      throw new MarionetteError({\n        name: 'ViewNotValid',\n        message: 'The view passed is undefined and therefore invalid. You must pass a view instance to show.'\n      });\n    }\n\n    if (view._isDestroyed) {\n      throw new MarionetteError({\n        name: 'ViewDestroyedError',\n        message: `View (cid: \"${view.cid}\") has already been destroyed and cannot be used.`\n      });\n    }\n\n    if (view instanceof Backbone.View) {\n      return view;\n    }\n\n    const viewOptions = this._getViewOptions(view);\n\n    return new View(viewOptions);\n  },\n\n  // This allows for a template or a static string to be\n  // used as a template\n  _getViewOptions(viewOptions) {\n    if (_.isFunction(viewOptions)) {\n      return { template: viewOptions };\n    }\n\n    if (_.isObject(viewOptions)) {\n      return viewOptions;\n    }\n\n    const template = function() { return viewOptions; };\n\n    return { template };\n  },\n\n  // Override this method to change how the region finds the DOM element that it manages. Return\n  // a jQuery selector object scoped to a provided parent el or the document if none exists.\n  getEl(el) {\n    const context = _.result(this, 'parentEl');\n\n    if (context && _.isString(el)) {\n      return this.Dom.findEl(context, el);\n    }\n\n    return this.Dom.getEl(el);\n  },\n\n  _replaceEl(view) {\n    // always restore the el to ensure the regions el is present before replacing\n    this._restoreEl();\n\n    view.on('before:destroy', this._restoreEl, this);\n\n    this.Dom.replaceEl(view.el, this.el);\n\n    this._isReplaced = true;\n  },\n\n  // Restore the region's element in the DOM.\n  _restoreEl() {\n    // There is nothing to replace\n    if (!this._isReplaced) {\n      return;\n    }\n\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._detachView(view);\n\n    this._isReplaced = false;\n  },\n\n  // Check to see if the region's el was replaced.\n  isReplaced() {\n    return !!this._isReplaced;\n  },\n\n  // Check to see if a view is being swapped by another\n  isSwappingView() {\n    return !!this._isSwappingView;\n  },\n\n  // Override this method to change how the new view is appended to the `$el` that the\n  // region is managing\n  attachHtml(view) {\n    this.Dom.appendContents(this.el, view.el, {_$el: this.$el, _$contents: view.$el});\n  },\n\n  // Destroy the current view, if there is one. If there is no current view, it does\n  // nothing and returns immediately.\n  empty(options = { allowMissingEl: true }) {\n    const view = this.currentView;\n\n    // If there is no view in the region we should only detach current html\n    if (!view) {\n      if (this._ensureElement(options)) {\n        this.detachHtml();\n      }\n      return this;\n    }\n\n    const shouldDestroy = !options.preventDestroy;\n\n    if (!shouldDestroy) {\n      deprecate('The preventDestroy option is deprecated. Use Region#detachView');\n    }\n\n    this._empty(view, shouldDestroy);\n    return this;\n  },\n\n  _empty(view, shouldDestroy) {\n    view.off('destroy', this._empty, this);\n    this.triggerMethod('before:empty', this, view);\n\n    this._restoreEl();\n\n    delete this.currentView;\n\n    if (!view._isDestroyed) {\n      if (shouldDestroy) {\n        this.removeView(view);\n      } else {\n        this._detachView(view);\n      }\n      this._stopChildViewEvents(view);\n    }\n\n    this.triggerMethod('empty', this, view);\n  },\n\n  _stopChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    this._parentView.stopListening(view);\n  },\n\n  destroyView(view) {\n    if (view._isDestroyed) {\n      return view;\n    }\n\n    view._shouldDisableEvents = this._shouldDisableMonitoring();\n    destroyView(view);\n    return view;\n  },\n\n  removeView(view) {\n    this.destroyView(view);\n  },\n\n  // Empties the Region without destroying the view\n  // Returns the detached view\n  detachView() {\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._empty(view);\n\n    return view;\n  },\n\n  _detachView(view) {\n    const shouldTriggerDetach = view._isAttached && !this._shouldDisableMonitoring();;\n    const shouldRestoreEl = this._isReplaced;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    if (shouldRestoreEl) {\n      this.Dom.replaceEl(this.el, view.el);\n    } else {\n      this.detachHtml();\n    }\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the region detaches current content\n  detachHtml() {\n    this.Dom.detachContents(this.el, this.$el);\n  },\n\n  // Checks whether a view is currently present within the region. Returns `true` if there is\n  // and `false` if no view is present.\n  hasView() {\n    return !!this.currentView;\n  },\n\n  // Reset the region by destroying any existing view and clearing out the cached `$el`.\n  // The next time a view is shown via this region, the region will re-query the DOM for\n  // the region's `el`.\n  reset(options) {\n    this.empty(options);\n\n    if (this.$el) {\n      this.el = this._initEl;\n    }\n\n    delete this.$el;\n    return this;\n  },\n\n  destroy(options) {\n    if (this._isDestroyed) { return this; }\n\n    this.reset(options);\n\n    if (this._name) {\n      this._parentView._removeReferences(this._name);\n    }\n    delete this._parentView;\n    delete this._name;\n\n    return MarionetteObject.prototype.destroy.apply(this, arguments);\n  }\n}, {\n  setDomApi\n});\n\nexport default Region;\n","import _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\nimport Region from '../region';\n\n// return the region instance from the definition\nexport default function(definition, defaults) {\n  if (definition instanceof Region) {\n    return definition;\n  }\n\n  return buildRegionFromDefinition(definition, defaults);\n}\n\nfunction buildRegionFromDefinition(definition, defaults) {\n  const opts = _.extend({}, defaults);\n\n  if (_.isString(definition)) {\n    _.extend(opts, { el: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isFunction(definition)) {\n    _.extend(opts, { regionClass: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isObject(definition)) {\n    if (definition.selector) {\n      deprecate('The selector option on a Region definition object is deprecated. Use el to pass a selector string');\n    }\n\n    _.extend(opts, { el: definition.selector }, definition);\n\n    return buildRegionFromObject(opts);\n  }\n\n  throw new MarionetteError({\n    message: 'Improper region configuration type.',\n    url: 'marionette.region.html#region-configuration-types'\n  });\n}\n\nfunction buildRegionFromObject(definition) {\n  const RegionClass = definition.regionClass\n\n  const options = _.omit(definition, 'regionClass');\n\n  return new RegionClass(options);\n}\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport buildRegion from '../common/build-region';\nimport Region from '../region';\n\n// MixinOptions\n// - regions\n// - regionClass\n\nexport default {\n  regionClass: Region,\n\n  // Internal method to initialize the regions that have been defined in a\n  // `regions` attribute on this View.\n  _initRegions() {\n\n    // init regions hash\n    this.regions = this.regions || {};\n    this._regions = {};\n\n    this.addRegions(_.result(this, 'regions'));\n  },\n\n  // Internal method to re-initialize all of the regions by updating\n  // the `el` that they point to\n  _reInitRegions() {\n    _invoke(this._regions, 'reset');\n  },\n\n  // Add a single region, by name, to the View\n  addRegion(name, definition) {\n    const regions = {};\n    regions[name] = definition;\n    return this.addRegions(regions)[name];\n  },\n\n  // Add multiple regions as a {name: definition, name2: def2} object literal\n  addRegions(regions) {\n    // If there's nothing to add, stop here.\n    if (_.isEmpty(regions)) {\n      return;\n    }\n\n    // Normalize region selectors hash to allow\n    // a user to use the @ui. syntax.\n    regions = this.normalizeUIValues(regions, ['selector', 'el']);\n\n    // Add the regions definitions to the regions property\n    this.regions = _.extend({}, this.regions, regions);\n\n    return this._addRegions(regions);\n  },\n\n  // internal method to build and add regions\n  _addRegions(regionDefinitions) {\n    const defaults = {\n      regionClass: this.regionClass,\n      parentEl: _.partial(_.result, this, 'el')\n    };\n\n    return _.reduce(regionDefinitions, (regions, definition, name) => {\n      regions[name] = buildRegion(definition, defaults);\n      this._addRegion(regions[name], name);\n      return regions;\n    }, {});\n  },\n\n  _addRegion(region, name) {\n    this.triggerMethod('before:add:region', this, name, region);\n\n    region._parentView = this;\n    region._name = name;\n\n    this._regions[name] = region;\n\n    this.triggerMethod('add:region', this, name, region);\n  },\n\n  // Remove a single region from the View, by name\n  removeRegion(name) {\n    const region = this._regions[name];\n\n    this._removeRegion(region, name);\n\n    return region;\n  },\n\n  // Remove all regions from the View\n  removeRegions() {\n    const regions = this._getRegions();\n\n    _.each(this._regions, _.bind(this._removeRegion, this));\n\n    return regions;\n  },\n\n  _removeRegion(region, name) {\n    this.triggerMethod('before:remove:region', this, name, region);\n\n    region.destroy();\n\n    this.triggerMethod('remove:region', this, name, region);\n  },\n\n  // Called in a region's destroy\n  _removeReferences(name) {\n    delete this.regions[name];\n    delete this._regions[name];\n  },\n\n  // Empty all regions in the region manager, but\n  // leave them attached\n  emptyRegions() {\n    const regions = this.getRegions();\n    _invoke(regions, 'empty');\n    return regions;\n  },\n\n  // Checks to see if view contains region\n  // Accepts the region name\n  // hasRegion('main')\n  hasRegion(name) {\n    return !!this.getRegion(name);\n  },\n\n  // Provides access to regions\n  // Accepts the region name\n  // getRegion('main')\n  getRegion(name) {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._regions[name];\n  },\n\n  // Get all regions\n  _getRegions() {\n    return _.clone(this._regions);\n  },\n\n  getRegions() {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._getRegions();\n  },\n\n  showChildView(name, view, ...args) {\n    const region = this.getRegion(name);\n    return region.show(view, ...args);\n  },\n\n  detachChildView(name) {\n    return this.getRegion(name).detachView();\n  },\n\n  getChildView(name) {\n    return this.getRegion(name).currentView;\n  }\n\n};\n","// Renderer\n// --------\n\nimport _ from 'underscore';\nimport MarionetteError from '../error';\nimport TemplateCache from '../template-cache';\n\n// Render a template with data by passing in the template\n// selector and the data to render.\nconst Renderer = {\n\n  // Render a template with data. The `template` parameter is\n  // passed to the `TemplateCache` object to retrieve the\n  // template function. Override this method to provide your own\n  // custom rendering and template handling for all of Marionette.\n  render(template, data) {\n    if (!template) {\n      throw new MarionetteError({\n        name: 'TemplateNotFoundError',\n        message: 'Cannot render the template since its false, null or undefined.'\n      });\n    }\n\n    const templateFunc = _.isFunction(template) ? template : TemplateCache.get(template);\n\n    return templateFunc(data);\n  }\n};\n\nexport default Renderer;\n","// View\n// ---------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport ViewMixin from './mixins/view';\nimport RegionsMixin from './mixins/regions';\nimport Renderer from './config/renderer';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'regionClass',\n  'regions',\n  'template',\n  'templateContext',\n  'triggers',\n  'ui'\n];\n\n// The standard view. Includes view events, automatic rendering\n// of Underscore templates, nested views, and more.\nconst View = Backbone.View.extend({\n\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this._initRegions();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Serialize the view's model *or* collection, if\n  // it exists, for the template\n  serializeData() {\n    if (!this.model && !this.collection) {\n      return {};\n    }\n\n    // If we have a model, we serialize that\n    if (this.model) {\n      return this.serializeModel();\n    }\n\n    // Otherwise, we serialize the collection,\n    // making it available under the `items` property\n    return {\n      items: this.serializeCollection()\n    };\n  },\n\n  // Prepares the special `model` property of a view\n  // for being displayed in the template. By default\n  // we simply clone the attributes. Override this if\n  // you need a custom transformation for your view's model\n  serializeModel() {\n    if (!this.model) { return {}; }\n    return _.clone(this.model.attributes);\n  },\n\n  // Serialize a collection by cloning each of\n  // its model's attributes\n  serializeCollection() {\n    if (!this.collection) { return {}; }\n    return this.collection.map(function(model) { return _.clone(model.attributes); });\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // rendered or attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isRendered = this.Dom.hasContents(this.el);\n    this._isAttached = isNodeAttached(this.el);\n\n    if (this._isRendered) {\n      this.bindUIElements();\n    }\n\n    return this;\n  },\n\n  // Render the view, defaulting to underscore.js templates.\n  // You can override this in your view definition to provide\n  // a very specific rendering for your view. In general, though,\n  // you should override the `Marionette.Renderer` object to\n  // change how Marionette renders views.\n  // Subsequent renders after the first will re-render all nested\n  // views.\n  render() {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:render', this);\n\n    // If this is not the first render call, then we need to\n    // re-initialize the `el` for each region\n    if (this._isRendered) {\n      this._reInitRegions();\n    }\n\n    this._renderTemplate();\n    this.bindUIElements();\n\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n\n    return this;\n  },\n\n  // Internal method to render the template with the serialized data\n  // and template context via the `Marionette.Renderer` object.\n  _renderTemplate() {\n    const template = this.getTemplate();\n\n    // Allow template-less views\n    if (template === false) {\n      deprecate('template:false is deprecated.  Use _.noop.');\n      return;\n    }\n\n    // Add in entity data and template context\n    const data = this.mixinTemplateContext(this.serializeData());\n\n    // Render and add to el\n    const html = this._renderHtml(template, data);\n    this.attachElContent(html);\n  },\n\n  // Renders the data into the template\n  _renderHtml(template, data) {\n    return Renderer.render(template, data, this);\n  },\n\n  // Get the template for this view\n  // instance. You can set a `template` attribute in the view\n  // definition or pass a `template: \"whatever\"` parameter in\n  // to the constructor options.\n  getTemplate() {\n    return this.template;\n  },\n\n  // Mix in template context methods. Looks for a\n  // `templateContext` attribute, which can either be an\n  // object literal, or a function that returns an object\n  // literal. All methods and attributes from this object\n  // are copies to the object passed in.\n  mixinTemplateContext(target = {}) {\n    const templateContext = _.result(this, 'templateContext');\n    return _.extend(target, templateContext);\n  },\n\n  // Attaches the content of a given view.\n  // This method can be overridden to optimize rendering,\n  // or to render in a non standard way.\n  //\n  // For example, using `innerHTML` instead of `$el.html`\n  //\n  // ```js\n  // attachElContent(html) {\n  //   this.el.innerHTML = html;\n  //   return this;\n  // }\n  // ```\n  attachElContent(html) {\n    this.Dom.setContents(this.el, html, this.$el);\n\n    return this;\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this.removeRegions();\n  },\n\n  _getImmediateChildren() {\n    return _.chain(this._getRegions())\n      .map('currentView')\n      .compact()\n      .value();\n  }\n}, {\n  // Sets the renderer for the Marionette.View class\n  setRenderer(renderer) {\n    this.prototype._renderHtml = renderer;\n    return this;\n  },\n\n  setDomApi\n});\n\n_.extend(View.prototype, ViewMixin, RegionsMixin);\n\nexport default View;\n","// Mix in methods from Underscore, for iteration, and other\n// collection related features.\n// Borrowing this code from Backbone.Collection:\n// https://github.com/jashkenas/backbone/blob/1.1.2/backbone.js#L962\n\nimport _ from 'underscore';\n\nconst methods = ['forEach', 'each', 'map', 'find', 'detect', 'filter',\n                'select', 'reject', 'every', 'all', 'some', 'any', 'include',\n                'contains', 'invoke', 'toArray', 'first', 'initial', 'rest',\n                'last', 'without', 'isEmpty', 'pluck', 'reduce', 'partition'];\n\nconst emulateCollection = function(object, listProperty) {\n  _.each(methods, function(method) {\n    object[method] = function() {\n      const list = _.result(this, listProperty);\n      const args = Array.prototype.slice.call(arguments);\n      return _[method].apply(_, [list].concat(args));\n    };\n  });\n};\n\nexport default emulateCollection;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function(views) {\n  this._views = {};\n  this._indexByModel = {};\n  this._indexByCustom = {};\n  this._updateLength();\n\n  _.each(views, _.bind(this.add, this));\n};\n\nemulateCollection(Container.prototype, '_getViews');\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  _getViews() {\n    return _.values(this._views);\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Optionally specify\n  // a custom key to store an retrieve the view.\n  add(view, customIndex) {\n    return this._add(view, customIndex)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _add(view, customIndex) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._views[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // index by custom\n    if (customIndex) {\n      this._indexByCustom[customIndex] = viewCid;\n    }\n\n    return this;\n  },\n\n  // Find a view by the model that was attached to\n  // it. Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to\n  // it. Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by a custom indexer.\n  findByCustom(index) {\n    const viewCid = this._indexByCustom[index];\n    return this.findByCid(viewCid);\n  },\n\n  // Find by index. This is not guaranteed to be a\n  // stable index.\n  findByIndex(index) {\n    return _.values(this._views)[index];\n  },\n\n  // retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._views[cid];\n  },\n\n  // Remove a view\n  remove(view) {\n    return this._remove(view)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _remove(view) {\n    const viewCid = view.cid;\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // delete custom index\n    _.some(this._indexByCustom, _.bind(function(cid, key) {\n      if (cid === viewCid) {\n        delete this._indexByCustom[key];\n        return true;\n      }\n    }, this));\n\n    // remove the view from the container\n    delete this._views[viewCid];\n\n    return this;\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = _.size(this._views);\n\n    return this;\n  }\n});\n\nexport default Container;\n","// Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './child-view-container';\nimport MarionetteError from './error';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'filter',\n  'emptyView',\n  'emptyViewOptions',\n  'modelEvents',\n  'reorderOnSort',\n  'sort',\n  'triggers',\n  'ui',\n  'viewComparator'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n\n  // flag for maintaining the sorted order of the collection\n  sort: true,\n\n  // constructor\n  // option to pass `{sort: false}` to prevent the `CollectionView` from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  //\n  // option to pass `{viewComparator: compFunction()}` to allow the `CollectionView`\n  // to use a custom sort order for the collection.\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this.once('render', this._initialEvents);\n    this._initChildViewStorage();\n    this._bufferedChildren = [];\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Instead of inserting elements one by one into the page, it's much more performant to insert\n  // elements into a document fragment and then insert that document fragment into the page\n  _startBuffering() {\n    this._isBuffering = true;\n  },\n\n  _endBuffering() {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n    const triggerOnChildren = shouldTriggerAttach ? this._getImmediateChildren() : [];\n\n    this._isBuffering = false;\n\n    _.each(triggerOnChildren, child => {\n      triggerMethodOn(child, 'before:attach', child);\n    });\n\n    this.attachBuffer(this, this._createBuffer());\n\n    _.each(triggerOnChildren, child => {\n      child._isAttached = true;\n      triggerMethodOn(child, 'attach', child);\n    });\n\n    this._bufferedChildren = [];\n  },\n\n  _getImmediateChildren() {\n    return _.values(this.children._views);\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.render);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Handle a child added to the collection\n  _onCollectionAdd(child, collection, opts) {\n    // `index` is present when adding with `at` since BB 1.2; indexOf fallback for < 1.2\n    let index = opts.at !== undefined && (opts.index || collection.indexOf(child));\n\n    // When filtered or when there is no initial index, calculate index.\n    if (this.filter || index === false) {\n      index = _.indexOf(this._filteredSortedModels(index), child);\n    }\n\n    if (this._shouldAddChild(child, index)) {\n      this._destroyEmptyView();\n      this._addChild(child, index)\n    }\n  },\n\n  // Handle collection update model removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n    this._removeChildModels(changes.removed);\n  },\n\n  // Remove the child views and destroy them.\n  // This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  // \"models\" is an array of models and the corresponding views\n  // will be removed and destroyed from the CollectionView\n  _removeChildModels(models) {\n    // Used to determine where to update the remaining\n    // sibling view indices after these views are removed.\n    const removedViews = this._getRemovedViews(models);\n\n    if (!removedViews.length) {\n      return;\n    }\n\n    this.children._updateLength();\n\n    // decrement the index of views after this one\n    this._updateIndices(removedViews, false);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n  },\n\n  // Returns the views that will be used for re-indexing\n  // through CollectionView#_updateIndices.\n  _getRemovedViews(models) {\n\n    // Returning a view means something was removed.\n    return _.reduce(models, (removingViews, model) => {\n      const view = model && this.children.findByModel(model);\n\n      if (!view || view._isDestroyed) {\n        return removingViews;\n      }\n\n      this._removeChildView(view);\n\n      removingViews.push(view);\n\n      return removingViews;\n    }, []);\n  },\n\n  _removeChildView(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n\n    this.stopListening(view);\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views. Override this method to provide your own implementation of a\n  // render function for the collection view.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n    this._renderChildren();\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // An efficient rendering used for filtering. Instead of modifying the whole DOM for the\n  // collection view, we are only adding or removing the related childrenViews.\n  setFilter(filter, {preventRender} = {}) {\n    const canBeRendered = this._isRendered && !this._isDestroyed;\n    const filterChanged = this.filter !== filter;\n    const shouldRender = canBeRendered && filterChanged && !preventRender;\n\n    if (shouldRender) {\n      const previousModels = this._filteredSortedModels();\n      this.filter = filter;\n      const models = this._filteredSortedModels();\n      this._applyModelDeltas(models, previousModels);\n    } else {\n      this.filter = filter;\n    }\n\n    return this;\n  },\n\n  // `removeFilter` is actually an alias for removing filters.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  // Calculate and apply difference by cid between `models` and `previousModels`.\n  _applyModelDeltas(models, previousModels) {\n    const currentIds = {};\n    _.each(models, (model, index) => {\n      const addedChildNotExists = !this.children.findByModel(model);\n      if (addedChildNotExists) {\n        this._onCollectionAdd(model, this.collection, {at: index});\n      }\n      currentIds[model.cid] = true;\n    });\n\n    const removeModels = _.filter(previousModels, (prevModel) => {\n      return !currentIds[prevModel.cid] && this.children.findByModel(prevModel);\n    });\n\n    this._removeChildModels(removeModels);\n  },\n\n  // Reorder DOM after sorting. When your element's rendering do not use their index,\n  // you can pass reorderOnSort: true to only reorder the DOM after a sort instead of\n  // rendering all the collectionView.\n  reorder() {\n    const children = this.children;\n    const models = this._filteredSortedModels();\n\n    if (!models.length && this._showingEmptyView) { return this; }\n\n    const anyModelsAdded = _.some(models, function(model) {\n      return !children.findByModel(model);\n    });\n\n    // If there are any new models added due to filtering we need to add child views,\n    // so render as normal.\n    if (anyModelsAdded) {\n      this.render();\n    } else {\n\n      const filteredOutModels = [];\n\n      // Get the DOM nodes in the same order as the models and\n      // find the model that were children before but aren't in this new order.\n      const elsToReorder = _.reduce(this.children._views, function(viewEls, view) {\n        const index = _.indexOf(models, view.model);\n\n        if (index === -1) {\n          filteredOutModels.push(view.model);\n          return viewEls;\n        }\n\n        view._index = index;\n\n        viewEls[index] = view.el;\n\n        return viewEls;\n      }, new Array(models.length));\n\n      this.triggerMethod('before:reorder', this);\n\n      const elBuffer = this.Dom.createBuffer();\n\n      _.each(elsToReorder, (el) => {\n        this.Dom.appendContents(elBuffer, el);\n      });\n\n      // Since append moves elements that are already in the DOM, appending the elements\n      // will effectively reorder them.\n      this._appendReorderedChildren(elBuffer);\n\n      // remove any views that have been filtered out\n      this._removeChildModels(filteredOutModels);\n\n      this.triggerMethod('reorder', this);\n    }\n    return this;\n  },\n\n  // Render view after sorting. Override this method to change how the view renders\n  // after a `sort` on the collection.\n  resortView() {\n    if (this.reorderOnSort) {\n      this.reorder();\n    } else {\n      this._renderChildren();\n    }\n    return this;\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will render.\n  _sortViews() {\n    const models = this._filteredSortedModels();\n\n    // check for any changes in sort order of views\n    const orderChanged = _.find(models, (item, index) => {\n      const view = this.children.findByModel(item);\n      return !view || view._index !== index;\n    });\n\n    if (orderChanged) {\n      this.resortView();\n    }\n  },\n\n  // Internal reference to what index a `emptyView` is.\n  _emptyViewIndex: -1,\n\n  // Internal method. Separated so that CompositeView can append to the childViewContainer\n  // if necessary\n  _appendReorderedChildren(children) {\n    this.Dom.appendContents(this.el, children, {_$el: this.$el});\n  },\n\n  // Internal method. Separated so that CompositeView can have more control over events\n  // being triggered, around the rendering process\n  _renderChildren() {\n    if (this._isRendered) {\n      this._destroyEmptyView();\n      this._destroyChildren();\n    }\n\n    const models = this._filteredSortedModels();\n    if (this.isEmpty({processedModels: models})) {\n      this._showEmptyView();\n    } else {\n      this.triggerMethod('before:render:children', this);\n      this._startBuffering();\n      this._showCollection(models);\n      this._endBuffering();\n      this.triggerMethod('render:children', this);\n    }\n  },\n\n  _createView(model, index) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model, index);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n    return view;\n  },\n\n  _setupChildView(view, index) {\n    monitorViewEvents(view);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n\n    if (this.sort) {\n      view._index = index;\n    }\n  },\n\n  // Internal method to loop through collection and show each child view.\n  _showCollection(models) {\n    _.each(models, _.bind(this._addChild, this));\n    this.children._updateLength();\n  },\n\n  // Allow the collection to be sorted by a custom view comparator\n  _filteredSortedModels(addedAt) {\n    if (!this.collection || !this.collection.length) { return []; }\n\n    const viewComparator = this.getViewComparator();\n    let models = this.collection.models;\n    addedAt = Math.min(Math.max(addedAt, 0), models.length - 1);\n\n    if (viewComparator) {\n      let addedModel;\n      // Preserve `at` location, even for a sorted view\n      if (addedAt) {\n        addedModel = models[addedAt];\n        models = models.slice(0, addedAt).concat(models.slice(addedAt + 1));\n      }\n      models = this._sortModelsBy(models, viewComparator);\n      if (addedModel) {\n        models.splice(addedAt, 0, addedModel);\n      }\n    }\n\n    // Filter after sorting in case the filter uses the index\n    models = this._filterModels(models);\n\n    return models;\n  },\n\n  getViewComparator() {\n    return this.viewComparator;\n  },\n\n  // Filter an array of models, if a filter exists\n  _filterModels(models) {\n    if (this.filter) {\n      models = _.filter(models, (model, index) => {\n        return this._shouldAddChild(model, index);\n      });\n    }\n    return models;\n  },\n\n  _sortModelsBy(models, comparator) {\n    if (typeof comparator === 'string') {\n      return _.sortBy(models, (model) => {\n        return model.get(comparator);\n      });\n    } else if (comparator.length === 1) {\n      return _.sortBy(models, _.bind(comparator, this));\n    } else {\n      return _.clone(models).sort(_.bind(comparator, this));\n    }\n  },\n\n  // Internal method to show an empty view in place of a collection of child views,\n  // when the collection is empty\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (EmptyView && !this._showingEmptyView) {\n      this._showingEmptyView = true;\n\n      const model = new Backbone.Model();\n      let emptyViewOptions =\n        this.emptyViewOptions || this.childViewOptions;\n      if (_.isFunction(emptyViewOptions)) {\n        emptyViewOptions = emptyViewOptions.call(this, model, this._emptyViewIndex);\n      }\n\n      const view = this.buildChildView(model, EmptyView, emptyViewOptions);\n\n      this.triggerMethod('before:render:empty', this, view);\n      this.addChildView(view, 0);\n      this.triggerMethod('render:empty', this, view);\n    }\n  },\n\n  // Internal method to destroy an existing emptyView instance if one exists. Called when\n  // a collection view has been rendered empty, and then a child is added to the collection.\n  _destroyEmptyView() {\n    if (this._showingEmptyView) {\n      this.triggerMethod('before:remove:empty', this);\n\n      this._destroyChildren();\n      delete this._showingEmptyView;\n\n      this.triggerMethod('remove:empty', this);\n    }\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  // Internal method for building and adding a child view\n  _addChild(child, index) {\n    const view = this._createView(child, index);\n    this.addChildView(view, index);\n\n    return view;\n  },\n\n  _getChildViewOptions(child, index) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child, index);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index.\n  // This will also update the indices of later views in the collection in order to keep the\n  // children in sync with the collection.\n  addChildView(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n    this._setupChildView(view, index);\n\n    // Store the child view itself so we can properly remove and/or destroy it later\n    if (this._isBuffering) {\n      // Add to children, but don't update children's length.\n      this.children._add(view);\n    } else {\n      // increment indices of views after this one\n      this._updateIndices(view, true);\n      this.children.add(view);\n    }\n\n    renderView(view);\n\n    this._attachView(view, index);\n\n    this.triggerMethod('add:child', this, view);\n\n    return view;\n  },\n\n  // Internal method. This decrements or increments the indices of views after the added/removed\n  // view to keep in sync with the collection.\n  _updateIndices(views, increment) {\n    if (!this.sort) {\n      return;\n    }\n\n    if (!increment) {\n      _.each(_.sortBy(this.children._views, '_index'), (view, index) => {\n        view._index = index;\n      });\n\n      return;\n    }\n\n    const view = _.isArray(views) ? _.max(views, '_index') : views;\n\n    if (_.isObject(view)) {\n      // update the indexes of views after this one\n      _.each(this.children._views, (laterView) => {\n        if (laterView._index >= view._index) {\n          laterView._index += 1;\n        }\n      });\n    }\n  },\n\n  _attachView(view, index) {\n    // Only trigger attach if already attached and not buffering,\n    // otherwise _endBuffering() or Region#show() handles this.\n    const shouldTriggerAttach = !view._isAttached && !this._isBuffering && this._isAttached && this.monitorViewEvents !== false;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    this.attachHtml(this, view, index);\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  // Build a `childView` for a model in the collection.\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  // Remove the child view and destroy it. This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  removeChildView(view) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    this._removeChildView(view);\n    this.children._updateLength();\n    // decrement the index of views after this one\n    this._updateIndices(view, false);\n    return view;\n  },\n\n  // check if the collection is empty or optionally whether an array of pre-processed models is empty\n  isEmpty(options) {\n    let models;\n    if (_.result(options, 'processedModels')) {\n      models = options.processedModels;\n    } else {\n      models = this.collection ? this.collection.models : [];\n      models = this._filterModels(models);\n    }\n    return models.length === 0;\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(collectionView, buffer) {\n    this.Dom.appendContents(collectionView.el, buffer, {_$el: collectionView.$el});\n  },\n\n  // Create a fragment buffer from the currently buffered children\n  _createBuffer() {\n    const elBuffer = this.Dom.createBuffer();\n    _.each(this._bufferedChildren, (b) => {\n      this.Dom.appendContents(elBuffer, b.el, {_$contents: b.$el});\n    });\n    return elBuffer;\n  },\n\n  // Append the HTML to the collection's `el`. Override this method to do something other\n  // than `.append`.\n  attachHtml(collectionView, childView, index) {\n    if (collectionView._isBuffering) {\n      // buffering happens on reset events and initial renders\n      // in order to reduce the number of inserts into the\n      // document, which are expensive.\n      collectionView._bufferedChildren.splice(index, 0, childView);\n    } else {\n      // If we've already rendered the main collection, append\n      // the new child into the correct order if we need to. Otherwise\n      // append to the end.\n      if (!collectionView._insertBefore(childView, index)) {\n        collectionView._insertAfter(childView);\n      }\n    }\n  },\n\n  // Internal method. Check whether we need to insert the view into the correct position.\n  _insertBefore(childView, index) {\n    let currentView;\n    const findPosition = this.sort && (index < this.children.length - 1);\n    if (findPosition) {\n      // Find the view after this one\n      currentView = _.find(this.children._views, (view) => {\n        return view._index === index + 1;\n      });\n    }\n\n    if (currentView) {\n      this.beforeEl(currentView.el, childView.el);\n      return true;\n    }\n\n    return false;\n  },\n\n  // Override to handle DOM inserting differently\n  beforeEl(el, siblings) {\n    this.$(el).before(siblings);\n  },\n\n  // Internal method. Append a view to the end of the $el\n  _insertAfter(childView) {\n    this.Dom.appendContents(this.el, childView.el, {_$el: this.$el, _$contents: childView.$el});\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren(options) {\n    if (!this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.children._updateLength();\n    this.triggerMethod('destroy:children', this);\n  },\n\n  // Return true if the given child should be shown. Return false otherwise.\n  // The filter will be passed (child, index, collection), where\n  //  'child' is the given model\n  //  'index' is the index of that model in the collection\n  //  'collection' is the collection referenced by this CollectionView\n  _shouldAddChild(child, index) {\n    const filter = this.filter;\n    return !_.isFunction(filter) || filter.call(this, child, index, this.collection);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function() {\n  this._init();\n};\n\nemulateCollection(Container.prototype, '_views');\n\nfunction stringComparator(comparator, view) {\n  return view.model && view.model.get(comparator);\n}\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  // Initializes an empty container\n  _init() {\n    this._views = [];\n    this._viewsByCid = {};\n    this._indexByModel = {};\n    this._updateLength();\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Additionally it stores\n  // the view by index in the _views array\n  _add(view, index = this._views.length) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._viewsByCid[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // add to end by default\n    this._views.splice(index, 0, view);\n\n    this._updateLength();\n  },\n\n  // Sort (mutate) and return the array of the child views.\n  _sort(comparator, context) {\n    if (typeof comparator === 'string') {\n      comparator = _.partial(stringComparator, comparator);\n      return this._sortBy(comparator);\n    }\n\n    if (comparator.length === 1) {\n      return this._sortBy(_.bind(comparator, context));\n    }\n\n    return this._views.sort(_.bind(comparator, context));\n  },\n\n  // Makes `_.sortBy` mutate the array to match `this._views.sort`\n  _sortBy(comparator) {\n    const sortedViews = _.sortBy(this._views, comparator);\n\n    this._set(sortedViews);\n\n    return sortedViews;\n  },\n\n  // Replace array contents without overwriting the reference.\n  _set(views) {\n    this._views.length = 0;\n\n    this._views.push.apply(this._views, views.slice(0));\n\n    this._updateLength();\n  },\n\n  // Swap views by index\n  _swap(view1, view2) {\n    const view1Index = this.findIndexByView(view1);\n    const view2Index = this.findIndexByView(view2);\n\n    if (view1Index === -1 || view2Index === -1) {\n      return;\n    }\n\n    const swapView = this._views[view1Index];\n    this._views[view1Index] = this._views[view2Index];\n    this._views[view2Index] = swapView;\n  },\n\n  // Find a view by the model that was attached to it.\n  // Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to it.\n  // Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by index.\n  findByIndex(index) {\n    return this._views[index];\n  },\n\n  // Find the index of a view instance\n  findIndexByView(view) {\n    return this._views.indexOf(view);\n  },\n\n  // Retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._viewsByCid[cid];\n  },\n\n  hasView(view) {\n    return !!this.findByCid(view.cid);\n  },\n\n  // Remove a view and clean up index references.\n  _remove(view) {\n    if (!this._viewsByCid[view.cid]) {\n      return;\n    }\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // remove the view from the container\n    delete this._viewsByCid[view.cid];\n\n    const index = this.findIndexByView(view);\n    this._views.splice(index, 1);\n\n    this._updateLength();\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = this._views.length;\n  }\n});\n\nexport default Container;\n","// Next Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './next-child-view-container';\nimport MarionetteError from './error';\nimport Region from './region';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'emptyView',\n  'emptyViewOptions',\n  'events',\n  'modelEvents',\n  'sortWithCollection',\n  'triggers',\n  'ui',\n  'viewComparator',\n  'viewFilter'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n  // flag for maintaining the sorted order of the collection\n  sortWithCollection: true,\n\n  // constructor\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this.once('render', this._initialEvents);\n\n    // This children container isn't really used by a render, but it provides\n    // the ability to check `this.children.length` prior to rendering\n    // It also allows for cases where only addChildView is used\n    this._initChildViewStorage();\n    this._initBehaviors();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    // Init empty region\n    this.getEmptyRegion();\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // Create an region to show the emptyView\n  getEmptyRegion() {\n    if (this._emptyRegion && !this._emptyRegion.isDestroyed()) {\n      return this._emptyRegion;\n    }\n\n    this._emptyRegion = new Region({ el: this.el, replaceElement: false });\n\n    this._emptyRegion._parentView = this;\n\n    return this._emptyRegion;\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    this.listenTo(this.collection, {\n      'sort': this._onCollectionSort,\n      'reset': this._onCollectionReset,\n      'update': this._onCollectionUpdate\n    });\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will re-sort.\n  _onCollectionSort(collection, { add, merge, remove }) {\n    if (!this.sortWithCollection || this.viewComparator === false) {\n      return;\n    }\n\n    // If the data is changing we will handle the sort later in `_onCollectionUpdate`\n    if (add || remove || merge) {\n      return;\n    }\n\n    // If the only thing happening here is sorting, sort.\n    this.sort();\n  },\n\n  _onCollectionReset() {\n    this.render();\n  },\n\n  // Handle collection update model additions and  removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n\n    // Remove first since it'll be a shorter array lookup.\n    const removedViews = changes.removed.length && this._removeChildModels(changes.removed);\n\n    this._addedViews = changes.added.length && this._addChildModels(changes.added);\n\n    this._detachChildren(removedViews);\n\n    this._showChildren();\n\n    // Destroy removed child views after all of the render is complete\n    this._removeChildViews(removedViews);\n  },\n\n  _removeChildModels(models) {\n    return _.reduce(models, (views, model) => {\n      const removeView = this._removeChildModel(model);\n\n      if (removeView) { views.push(removeView); }\n\n      return views;\n    }, []);\n  },\n\n  _removeChildModel(model) {\n    const view = this.children.findByModel(model);\n\n    if (view) { this._removeChild(view); }\n\n    return view;\n  },\n\n  _removeChild(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Added views are returned for consistency with _removeChildModels\n  _addChildModels(models) {\n    return _.map(models, _.bind(this._addChildModel, this));\n  },\n\n  _addChildModel(model) {\n    const view = this._createChildView(model);\n\n    this._addChild(view);\n\n    return view;\n  },\n\n  _createChildView(model) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n\n    return view;\n  },\n\n  _addChild(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n\n    this._setupChildView(view);\n    this.children._add(view, index);\n\n    this.triggerMethod('add:child', this, view);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  _getChildViewOptions(child) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Build a `childView` for a model in the collection.\n  // Override to customize the build\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other\n    // than through the CollectionView.\n    // If this happens we need to remove the reference to the view\n    // since once a view has been destroyed we can not reuse it.\n    view.on('destroy', this.removeChildView, this);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n  },\n\n  // used by ViewMixin's `_childViewEventHandler`\n  _getImmediateChildren() {\n    return this.children._views;\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n\n    this._destroyChildren();\n\n    // After all children have been destroyed re-init the container\n    this.children._init();\n\n    if (this.collection) {\n      this._addChildModels(this.collection.models);\n    }\n\n    this._showChildren();\n\n    this._isRendered = true;\n\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // Sorts the children then filters and renders the results.\n  sort() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    this._showChildren();\n\n    return this;\n  },\n\n  _showChildren() {\n    if (this.isEmpty()) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._sortChildren();\n\n    this.filter();\n  },\n\n  // Returns true if the collectionView is considered empty.\n  // This is called twice during a render. Once to check the data,\n  // and again when views are filtered. Override this function to\n  // customize what empty means.\n  isEmpty(allViewsFiltered) {\n    return allViewsFiltered || !this.children.length;\n  },\n\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (!EmptyView) {\n      return;\n    }\n\n    const options = this._getEmptyViewOptions();\n\n    const emptyRegion = this.getEmptyRegion();\n\n    emptyRegion.show(new EmptyView(options));\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Remove the emptyView\n  _destroyEmptyView() {\n    const emptyRegion = this.getEmptyRegion();\n    // Only empty if a view is show so the region\n    // doesn't detach any other unrelated HTML\n    if (emptyRegion.hasView()) {\n      emptyRegion.empty();\n    }\n  },\n\n  //\n  _getEmptyViewOptions() {\n    const emptyViewOptions = this.emptyViewOptions || this.childViewOptions;\n\n    if (_.isFunction(emptyViewOptions)) {\n      return emptyViewOptions.call(this);\n    }\n\n    return emptyViewOptions;\n  },\n\n  // Sorts views by viewComparator and sets the children to the new order\n  _sortChildren() {\n    let viewComparator = this.getComparator();\n\n    if (!viewComparator) { return; }\n\n    // If children are sorted prevent added to end perf\n    delete this._addedViews;\n\n    this.triggerMethod('before:sort', this);\n\n    this.children._sort(viewComparator, this);\n\n    this.triggerMethod('sort', this);\n  },\n\n  // Sets the view's `viewComparator` and applies the sort if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setComparator(comparator, {preventRender} = {}) {\n    const comparatorChanged = this.viewComparator !== comparator;\n    const shouldSort = comparatorChanged && !preventRender;\n\n    this.viewComparator = comparator;\n\n    if (shouldSort) {\n      this.sort();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewComparator` and follows the same rules for rendering as `setComparator`.\n  removeComparator(options) {\n    return this.setComparator(null, options);\n  },\n\n  // If viewComparator is overriden it will be returned here.\n  // Additionally override this function to provide custom\n  // viewComparator logic\n  getComparator() {\n    if (this.viewComparator) { return this.viewComparator }\n\n    if (!this.sortWithCollection || this.viewComparator === false || !this.collection) {\n      return false;\n    }\n\n    return this._viewComparator;\n  },\n\n  // Default internal view comparator that order the views by\n  // the order of the collection\n  _viewComparator(view) {\n    return this.collection.indexOf(view.model);\n  },\n\n  // This method re-filters the children views and re-renders the results\n  filter() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    const filteredViews = this._filterChildren();\n\n    this._renderChildren(filteredViews);\n\n    return this;\n  },\n\n  _filterChildren() {\n    const viewFilter = this._getFilter();\n    const addedViews = this._addedViews;\n\n    delete this._addedViews;\n\n    if (!viewFilter) {\n      if (addedViews) { return addedViews; }\n\n      return this.children._views;\n    }\n\n    this.triggerMethod('before:filter', this);\n\n    const attachViews = [];\n    const detachViews = [];\n\n    _.each(this.children._views, (view, key, children) => {\n      (viewFilter.call(this, view, key, children) ? attachViews : detachViews).push(view);\n    });\n\n    this._detachChildren(detachViews);\n\n    this.triggerMethod('filter', this, attachViews, detachViews);\n\n    return attachViews;\n  },\n\n  // This method returns a function for the viewFilter\n  _getFilter() {\n    const viewFilter = this.getFilter();\n\n    if (!viewFilter) { return false; }\n\n    if (_.isFunction(viewFilter)) {\n      return viewFilter;\n    }\n\n    // Support filter predicates `{ fooFlag: true }`\n    if (_.isObject(viewFilter)) {\n      const matcher = _.matches(viewFilter);\n      return function(view) {\n        return matcher(view.model && view.model.attributes);\n      };\n    }\n\n    // Filter by model attribute\n    if (_.isString(viewFilter)) {\n      return function(view) {\n        return view.model && view.model.get(viewFilter);\n      };\n    }\n\n    throw new MarionetteError({\n      name: 'InvalidViewFilterError',\n      message: '\"viewFilter\" must be a function, predicate object literal, a string indicating a model attribute, or falsy'\n    });\n  },\n\n  // Override this function to provide custom\n  // viewFilter logic\n  getFilter() {\n    return this.viewFilter;\n  },\n\n  // Sets the view's `viewFilter` and applies the filter if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setFilter(filter, {preventRender} = {}) {\n    const filterChanged = this.viewFilter !== filter;\n    const shouldRender = filterChanged && !preventRender;\n\n    this.viewFilter = filter;\n\n    if (shouldRender) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewFilter` and follows the same rules for rendering as `setFilter`.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  _detachChildren(detachingViews) {\n    _.each(detachingViews, _.bind(this._detachChildView, this));\n  },\n\n  _detachChildView(view) {\n    const shouldTriggerDetach = view._isAttached && this.monitorViewEvents !== false;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    this.detachHtml(view);\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the collectionView detaches a child view\n  detachHtml(view) {\n    this.Dom.detachEl(view.el, view.$el);\n  },\n\n  _renderChildren(views) {\n    if (this.isEmpty(!views.length)) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._destroyEmptyView();\n\n    this.triggerMethod('before:render:children', this, views);\n\n    const els = this._getBuffer(views);\n\n    this._attachChildren(els, views);\n\n    this.triggerMethod('render:children', this, views);\n  },\n\n  _attachChildren(els, views) {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n\n    views = shouldTriggerAttach ? views : [];\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      triggerMethodOn(view, 'before:attach', view);\n    });\n\n    this.attachHtml(els);\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    });\n  },\n\n  // Renders each view in children and creates a fragment buffer from them\n  _getBuffer(views) {\n    const elBuffer = this.Dom.createBuffer();\n\n    _.each(views, view => {\n      renderView(view);\n      this.Dom.appendContents(elBuffer, view.el, {_$contents: view.$el});\n    });\n\n    return elBuffer;\n  },\n\n  // Override this method to do something other than `.append`.\n  // You can attach any HTML at this point including the els.\n  attachHtml(els) {\n    this.Dom.appendContents(this.el, els, {_$el: this.$el});\n  },\n\n  swapChildViews(view1, view2) {\n    if (!this.children.hasView(view1) || !this.children.hasView(view2)) {\n      throw new MarionetteError({\n        name: 'ChildSwapError',\n        message: 'Both views must be children of the collection view'\n      });\n    }\n\n    this.children._swap(view1, view2);\n    this.Dom.swapEl(view1.el, view2.el);\n\n    // If the views are not filtered the same, refilter\n    if (this.Dom.hasEl(this.el, view1.el) !== this.Dom.hasEl(this.el, view2.el)) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index, based on the current sort\n  addChildView(view, index) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    // Only cache views if added to the end\n    if (!index || index >= this.children.length) {\n      this._addedViews = [view];\n    }\n    this._addChild(view, index);\n    this._showChildren();\n\n    return view;\n  },\n\n  // Detach a view from the children.  Best used when adding a\n  // childView from `addChildView`\n  detachChildView(view) {\n    this.removeChildView(view, { shouldDetach: true });\n\n    return view;\n  },\n\n  // Remove the child view and destroy it.  Best used when adding a\n  // childView from `addChildView`\n  // The options argument is for internal use only\n  removeChildView(view, options) {\n    if (!view) {\n      return view;\n    }\n\n    this._removeChildView(view, options);\n\n    this._removeChild(view);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n\n    return view;\n  },\n\n  _removeChildViews(views) {\n    _.each(views, _.bind(this._removeChildView, this));\n  },\n\n  _removeChildView(view, {shouldDetach} = {}) {\n    view.off('destroy', this.removeChildView, this);\n\n    if (shouldDetach) {\n      this._detachChildView(view);\n    } else {\n      this._destroyChildView(view);\n    }\n\n    this.stopListening(view);\n  },\n\n  _destroyChildView(view) {\n    if (view._isDestroyed) {\n      return;\n    }\n\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n    const emptyRegion = this.getEmptyRegion();\n    emptyRegion.destroy();\n    delete this._addedViews;\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren() {\n    if (!this.children || !this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    if (this.monitorViewEvents === false) {\n      this.Dom.detachContents(this.el, this.$el);\n    }\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.triggerMethod('destroy:children', this);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","// Composite View\n// --------------\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport MarionetteError from './error';\nimport CollectionView from './collection-view';\nimport View from './view';\n\nconst ClassOptions = [\n  'childViewContainer',\n  'template',\n  'templateContext'\n];\n\n// Used for rendering a branch-leaf, hierarchical structure.\n// Extends directly from CollectionView\n// @deprecated\nconst CompositeView = CollectionView.extend({\n\n  // Setting up the inheritance chain which allows changes to\n  // Marionette.CollectionView.prototype.constructor which allows overriding\n  // option to pass '{sort: false}' to prevent the CompositeView from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  constructor(options) {\n    deprecate('CompositeView is deprecated. Convert to View at your earliest convenience');\n\n    this.mergeOptions(options, ClassOptions);\n\n    CollectionView.prototype.constructor.apply(this, arguments);\n  },\n\n  // Configured the initial events that the composite view\n  // binds to. Override this method to prevent the initial\n  // events, or to add your own initial events.\n  _initialEvents() {\n\n    // Bind only after composite view is rendered to avoid adding child views\n    // to nonexistent childViewContainer\n\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.renderChildren);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Retrieve the `childView` to be used when rendering each of\n  // the items in the collection. The default is to return\n  // `this.childView` or Marionette.CompositeView if no `childView`\n  // has been defined. As happens in CollectionView, `childView` can\n  // be a function (which should return a view class).\n  _getChildView(child) {\n    let childView = this.childView;\n\n    // for CompositeView, if `childView` is not specified, we'll get the same\n    // composite view class rendered for each child in the collection\n    // then check if the `childView` is a view class (the common case)\n    // finally check if it's a function (which we assume that returns a view class)\n    if (!childView) {\n      return this.constructor;\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // Return the serialized model\n  serializeData() {\n    return this.serializeModel();\n  },\n\n  // Renders the model and the collection.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this._isRendering = true;\n    this.resetChildViewContainer();\n\n    this.triggerMethod('before:render', this);\n\n    this._renderTemplate();\n    this.bindUIElements();\n    this.renderChildren();\n\n    this._isRendering = false;\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  renderChildren() {\n    if (this._isRendered || this._isRendering) {\n      CollectionView.prototype._renderChildren.call(this);\n    }\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(compositeView, buffer) {\n    const $container = this.getChildViewContainer(compositeView);\n    this.Dom.appendContents($container[0], buffer, {_$el: $container});\n  },\n\n  // Internal method. Append a view to the end of the $el.\n  // Overidden from CollectionView to ensure view is appended to\n  // childViewContainer\n  _insertAfter(childView) {\n    const $container = this.getChildViewContainer(this, childView);\n    this.Dom.appendContents($container[0], childView.el, {_$el: $container, _$contents: childView.$el});\n  },\n\n  // Internal method. Append reordered childView'.\n  // Overidden from CollectionView to ensure reordered views\n  // are appended to childViewContainer\n  _appendReorderedChildren(children) {\n    const $container = this.getChildViewContainer(this);\n    this.Dom.appendContents($container[0], children, {_$el: $container});\n  },\n\n  // Internal method to ensure an `$childViewContainer` exists, for the\n  // `attachHtml` method to use.\n  getChildViewContainer(containerView, childView) {\n    if (!!containerView.$childViewContainer) {\n      return containerView.$childViewContainer;\n    }\n\n    let container;\n    const childViewContainer = containerView.childViewContainer;\n    if (childViewContainer) {\n\n      const selector = _.result(containerView, 'childViewContainer');\n\n      if (selector.charAt(0) === '@' && containerView.ui) {\n        container = containerView.ui[selector.substr(4)];\n      } else {\n        container = this.$(selector);\n      }\n\n      if (container.length <= 0) {\n        throw new MarionetteError({\n          name: 'ChildViewContainerMissingError',\n          message: `The specified \"childViewContainer\" was not found: ${containerView.childViewContainer}`\n        });\n      }\n\n    } else {\n      container = containerView.$el;\n    }\n\n    containerView.$childViewContainer = container;\n    return container;\n  },\n\n  // Internal method to reset the `$childViewContainer` on render\n  resetChildViewContainer() {\n    if (this.$childViewContainer) {\n      this.$childViewContainer = undefined;\n    }\n  }\n});\n\n// To prevent duplication but allow the best View organization\n// Certain View methods are mixed directly into the deprecated CompositeView\nconst MixinFromView = _.pick(View.prototype, 'serializeModel', 'getTemplate', '_renderTemplate', '_renderHtml', 'mixinTemplateContext', 'attachElContent');\n_.extend(CompositeView.prototype, MixinFromView);\n\nexport default CompositeView;\n","// Behavior\n// --------\n\n// A Behavior is an isolated set of DOM /\n// user interactions that can be mixed into any View.\n// Behaviors allow you to blackbox View specific interactions\n// into portable logical chunks, keeping your views simple and your code DRY.\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport getNamespacedEventName from './utils/get-namespaced-event-name';\nimport MarionetteObject from './object';\nimport DelegateEntityEventsMixin from './mixins/delegate-entity-events';\nimport TriggersMixin from './mixins/triggers';\nimport UIMixin from './mixins/ui';\n\nconst ClassOptions = [\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'triggers',\n  'ui'\n];\n\nconst Behavior = MarionetteObject.extend({\n  cidPrefix: 'mnb',\n\n  constructor(options, view) {\n    // Setup reference to the view.\n    // this comes in handle when a behavior\n    // wants to directly talk up the chain\n    // to the view.\n    this.view = view;\n\n    if (this.defaults) {\n      deprecate('Behavior defaults are deprecated. For similar functionality set options on the Behavior class.');\n    }\n\n    this.defaults = _.clone(_.result(this, 'defaults', {}));\n\n    this._setOptions(_.extend({}, this.defaults, options));\n    this.mergeOptions(this.options, ClassOptions);\n\n    // Construct an internal UI hash using\n    // the behaviors UI hash and then the view UI hash.\n    // This allows the user to use UI hash elements\n    // defined in the parent view as well as those\n    // defined in the given behavior.\n    // This order will help the reuse and share of a behavior\n    // between multiple views, while letting a view override a\n    // selector under an UI key.\n    this.ui = _.extend({}, _.result(this, 'ui'), _.result(view, 'ui'));\n\n    MarionetteObject.apply(this, arguments);\n  },\n\n  // proxy behavior $ method to the view\n  // this is useful for doing jquery DOM lookups\n  // scoped to behaviors view.\n  $() {\n    return this.view.$.apply(this.view, arguments);\n  },\n\n  // Stops the behavior from listening to events.\n  // Overrides Object#destroy to prevent additional events from being triggered.\n  destroy() {\n    this.stopListening();\n\n    this.view._removeBehavior(this);\n\n    return this;\n  },\n\n  proxyViewProperties() {\n    this.$el = this.view.$el;\n    this.el = this.view.el;\n\n    return this;\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n\n    return this;\n  },\n\n  unbindUIElements() {\n    this._unbindUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  getEvents() {\n    // Normalize behavior events hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorEvents = this.normalizeUIKeys(_.result(this, 'events'));\n\n    // binds the handler to the behavior and builds a unique eventName\n    return _.reduce(behaviorEvents, (events, behaviorHandler, key) => {\n      if (!_.isFunction(behaviorHandler)) {\n        behaviorHandler = this[behaviorHandler];\n      }\n      if (!behaviorHandler) { return events; }\n      key = getNamespacedEventName(key, this.cid);\n      events[key] = _.bind(behaviorHandler, this);\n      return events;\n    }, {});\n  },\n\n  // Internal method to build all trigger handlers for a given behavior\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Normalize behavior triggers hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorTriggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    return this._getViewTriggers(this.view, behaviorTriggers);\n  }\n\n});\n\n_.extend(Behavior.prototype, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default Behavior;\n","// Application\n// -----------\nimport buildRegion from './common/build-region';\nimport MarionetteObject from './object';\nimport Region from './region';\n\nconst ClassOptions = [\n  'region',\n  'regionClass'\n];\n\n// A container for a Marionette application.\nconst Application = MarionetteObject.extend({\n  cidPrefix: 'mna',\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    this._initRegion();\n\n    MarionetteObject.prototype.constructor.apply(this, arguments);\n  },\n\n  regionClass: Region,\n\n  _initRegion() {\n    const region = this.region;\n\n    if (!region) { return; }\n\n    const defaults = {\n      regionClass: this.regionClass\n    };\n\n    this._region = buildRegion(region, defaults);\n  },\n\n  getRegion() {\n    return this._region;\n  },\n\n  showView(view, ...args) {\n    const region = this.getRegion();\n    return region.show(view, ...args);\n  },\n\n  getView() {\n    return this.getRegion().currentView;\n  },\n\n  // kick off all of the application's processes.\n  start(options) {\n    this.triggerMethod('before:start', this, options);\n    this.triggerMethod('start', this, options);\n    return this;\n  }\n\n});\n\nexport default Application;\n","// App Router\n// ----------\n\n// Reduce the boilerplate code of handling route events\n// and then calling a single method on another object,\n// called a controller.\n// Have your routers configured to call the method on\n// your controller, directly.\n//\n// Configure an AppRouter with `appRoutes`.\n//\n// App routers can only take one `controller` object.\n// It is recommended that you divide your controller\n// objects in to smaller pieces of related functionality\n// and have multiple routers / controllers, instead of\n// just one giant router and controller.\n//\n// You can also add standard routes to an AppRouter.\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from './common/trigger-method';\nimport MarionetteError from './error';\nimport CommonMixin from './mixins/common';\n\nconst ClassOptions = [\n  'appRoutes',\n  'controller'\n];\n\nconst AppRouter = Backbone.Router.extend({\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    Backbone.Router.apply(this, arguments);\n\n    const appRoutes = this.appRoutes;\n    const controller = this._getController();\n    this.processAppRoutes(controller, appRoutes);\n    this.on('route', this._processOnRoute, this);\n  },\n\n  // Similar to route method on a Backbone Router but\n  // method is called on the controller\n  appRoute(route, methodName) {\n    const controller = this._getController();\n    this._addAppRoute(controller, route, methodName);\n    return this;\n  },\n\n  // process the route event and trigger the onRoute\n  // method call, if it exists\n  _processOnRoute(routeName, routeArgs) {\n    // make sure an onRoute before trying to call it\n    if (_.isFunction(this.onRoute)) {\n      // find the path that matches the current route\n      const routePath = _.invert(this.appRoutes)[routeName];\n      this.onRoute(routeName, routePath, routeArgs);\n    }\n  },\n\n  // Internal method to process the `appRoutes` for the\n  // router, and turn them in to routes that trigger the\n  // specified method on the specified `controller`.\n  processAppRoutes(controller, appRoutes) {\n    if (!appRoutes) { return this; }\n\n    const routeNames = _.keys(appRoutes).reverse(); // Backbone requires reverted order of routes\n\n    _.each(routeNames, route => {\n      this._addAppRoute(controller, route, appRoutes[route]);\n    });\n\n    return this;\n  },\n\n  _getController() {\n    return this.controller;\n  },\n\n  _addAppRoute(controller, route, methodName) {\n    const method = controller[methodName];\n\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was not found on the controller`);\n    }\n\n    this.route(route, methodName, _.bind(method, controller));\n  },\n\n  triggerMethod: triggerMethod\n});\n\n_.extend(AppRouter.prototype, CommonMixin);\n\nexport default AppRouter;\n","import MarionetteError from '../error';\n\n// Placeholder method to be extended by the user.\n// The method should define the object that stores the behaviors.\n// i.e.\n//\n// ```js\n// Marionette.Behaviors.behaviorsLookup: function() {\n//   return App.Behaviors\n// }\n// ```\nexport default function behaviorsLookup() {\n  throw new MarionetteError({\n    message: 'You must define where your behaviors are stored.',\n    url: 'marionette.behaviors.md#behaviorslookup'\n  });\n}\n","import Backbone from 'backbone';\nimport {version} from '../package.json';\n\nimport proxy from './utils/proxy';\nimport extend from './utils/extend';\nimport deprecate from './utils/deprecate';\n\nimport isNodeAttached from './common/is-node-attached';\nimport mergeOptions from './common/merge-options';\nimport getOption from './common/get-option';\nimport normalizeMethods from './common/normalize-methods';\nimport monitorViewEvents from './common/monitor-view-events';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from './common/bind-events';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from './common/bind-requests';\n\nimport {\n  triggerMethod,\n  triggerMethodOn\n} from './common/trigger-method';\n\n\nimport MarionetteObject from './object';\nimport TemplateCache from './template-cache';\nimport View from './view';\nimport CollectionView from './collection-view';\nimport NextCollectionView from './next-collection-view';\nimport CompositeView from './composite-view';\nimport Behavior from './behavior';\nimport Region from './region';\nimport Application from './application';\nimport AppRouter from './app-router';\nimport MarionetteError from './error';\n\nimport behaviorsLookup from './config/behaviors-lookup';\nimport DomApi from './config/dom';\nimport Renderer from './config/renderer';\n\nimport {\n  FEATURES,\n  isEnabled,\n  setEnabled\n} from './config/features';\n\nconst previousMarionette = Backbone.Marionette;\nconst Marionette = Backbone.Marionette = {};\n\n// This allows you to run multiple instances of Marionette on the same\n// webapp. After loading the new version, call `noConflict()` to\n// get a reference to it. At the same time the old version will be\n// returned to Backbone.Marionette.\nMarionette.noConflict = function() {\n  Backbone.Marionette = previousMarionette;\n  return this;\n};\n\n// Utilities\nMarionette.bindEvents = proxy(bindEvents);\nMarionette.unbindEvents = proxy(unbindEvents);\nMarionette.bindRequests = proxy(bindRequests);\nMarionette.unbindRequests = proxy(unbindRequests);\nMarionette.mergeOptions = proxy(mergeOptions);\nMarionette.getOption = proxy(getOption);\nMarionette.normalizeMethods = proxy(normalizeMethods);\nMarionette.extend = extend;\nMarionette.isNodeAttached = isNodeAttached;\nMarionette.deprecate = deprecate;\nMarionette.triggerMethod = proxy(triggerMethod);\nMarionette.triggerMethodOn = triggerMethodOn;\nMarionette.isEnabled = isEnabled;\nMarionette.setEnabled = setEnabled;\nMarionette.monitorViewEvents = monitorViewEvents;\n\nMarionette.Behaviors = {};\nMarionette.Behaviors.behaviorsLookup = behaviorsLookup;\n\n// Classes\nMarionette.Application = Application;\nMarionette.AppRouter = AppRouter;\nMarionette.Renderer = Renderer;\nMarionette.TemplateCache = TemplateCache;\nMarionette.View = View;\nMarionette.CollectionView = CollectionView;\nMarionette.NextCollectionView = NextCollectionView;\nMarionette.CompositeView = CompositeView;\nMarionette.Behavior = Behavior;\nMarionette.Region = Region;\nMarionette.Error = MarionetteError;\nMarionette.Object = MarionetteObject;\n\n// Configuration\nMarionette.DEV_MODE = false;\nMarionette.FEATURES = FEATURES;\nMarionette.VERSION = version;\nMarionette.DomApi = DomApi;\nMarionette.setDomApi = function(mixin) {\n  CollectionView.setDomApi(mixin);\n  CompositeView.setDomApi(mixin);\n  NextCollectionView.setDomApi(mixin);\n  Region.setDomApi(mixin);\n  View.setDomApi(mixin);\n};\n\nexport default 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diff --git a/lib/backbone.marionette.min.js b/lib/backbone.marionette.min.js
index 82a50240de..9f8c7f703f 100644
--- a/lib/backbone.marionette.min.js
+++ b/lib/backbone.marionette.min.js
@@ -2,12 +2,12 @@
 * @license
 * MarionetteJS (Backbone.Marionette)
 * ----------------------------------
-* v3.5.0
+* v3.5.1
 *
 * Copyright (c)2017 Derick Bailey, Muted Solutions, LLC.
 * Distributed under MIT license
 *
 * http://marionettejs.com
 */
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t.extend(e,i)},{})},_getBehaviorEvents:function(){var e=ee(this._behaviors,"getEvents");return t.reduce(e,function(e,i){return t.extend(e,i)},{})},_proxyBehaviorViewProperties:function(){ee(this._behaviors,"proxyViewProperties")},_delegateBehaviorEntityEvents:function(){ee(this._behaviors,"delegateEntityEvents")},_undelegateBehaviorEntityEvents:function(){ee(this._behaviors,"undelegateEntityEvents")},_destroyBehaviors:function(){for(var e=arguments.length,t=Array(e),i=0;i<e;i++)t[i]=arguments[i];ee.apply(void 0,[this._behaviors,"destroy"].concat(t))},_removeBehavior:function(e){this._isDestroyed||(this.undelegate(".trig"+e.cid+" ."+e.cid),this._behaviors=t.without(this._behaviors,e))},_bindBehaviorUIElements:function(){ee(this._behaviors,"bindUIElements")},_unbindBehaviorUIElements:function(){ee(this._behaviors,"unbindUIElements")},_triggerEventOnBehaviors:function(){for(var e=this._behaviors,t=0,i=e&&e.length;t<i;t++)s.apply(e[t],arguments)}},ie={_delegateEntityEvents:function(e,i){this._undelegateEntityEvents(e,i);var n=t.result(this,"modelEvents");V.call(this,e,n);var s=t.result(this,"collectionEvents");V.call(this,i,s)},_undelegateEntityEvents:function(e,i){var n=t.result(this,"modelEvents");E.call(this,e,n);var s=t.result(this,"collectionEvents");E.call(this,i,s)}},ne=/^(\S+)\s*(.*)$/,se=function(e,t){var i=e.match(ne);return i[1]+"."+t+" "+i[2]},re={childViewEventPrefix:!0,triggersStopPropagation:!0,triggersPreventDefault:!0},oe={_getViewTriggers:function(e,i){var n=this;return t.reduce(i,function(t,i,s){return s=se(s,"trig"+n.cid),t[s]=A(e,i),t},{})}},he=function(e,i){return t.reduce(e,function(e,t,n){return e[de(n,i)]=t,e},{})},de=function(e,t){return e.replace(/@ui\.[a-zA-Z-_$0-9]*/g,function(e){return t[e.slice(4)]})},le=function e(i,n,s){return t.each(i,function(r,o){t.isString(r)?i[o]=de(r,n):t.isObject(r)&&t.isArray(s)&&(t.extend(r,e(t.pick(r,s),n)),t.each(s,function(e){var i=r[e];t.isString(i)&&(r[e]=de(i,n))}))}),i},ae={normalizeUIKeys:function(e){var t=this._getUIBindings();return he(e,t)},normalizeUIString:function(e){var t=this._getUIBindings();return de(e,t)},normalizeUIValues:function(e,t){var i=this._getUIBindings();return le(e,i,t)},_getUIBindings:function(){var e=t.result(this,"_uiBindings"),i=t.result(this,"ui");return e||i},_bindUIElements:function(){var e=this;if(this.ui){this._uiBindings||(this._uiBindings=this.ui);var i=t.result(this,"_uiBindings");this._ui={},t.each(i,function(t,i){e._ui[i]=e.$(t)}),this.ui=this._ui}},_unbindUIElements:function(){var e=this;this.ui&&this._uiBindings&&(t.each(this.ui,function(t,i){delete e.ui[i]}),this.ui=this._uiBindings,delete this._uiBindings,delete this._ui)},_getUI:function(e){return this._ui[e]}},ce={createBuffer:function(){return document.createDocumentFragment()},getEl:function(e){return O(e)},findEl:function(e,t){return(arguments.length>2&&void 0!==arguments[2]?arguments[2]:O(e)).find(t)},hasEl:function(e,t){return e.contains(t&&t.parentNode)},detachEl:function(e){(arguments.length>1&&void 0!==arguments[1]?arguments[1]:O(e)).detach()},replaceEl:function(e,t){if(e!==t){var i=t.parentNode;i&&i.replaceChild(e,t)}},swapEl:function(e,t){if(e!==t){var i=e.parentNode,n=t.parentNode;if(i&&n){var s=e.nextSibling,r=t.nextSibling;i.insertBefore(t,s),n.insertBefore(e,r)}}},setContents:function(e,t){(arguments.length>2&&void 0!==arguments[2]?arguments[2]:O(e)).html(t)},appendContents:function(e,t){var i=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},n=i._$el,s=void 0===n?O(e):n,r=i._$contents,o=void 0===r?O(t):r;s.append(o)},hasContents:function(e){return!!e&&e.hasChildNodes()},detachContents:function(e){(arguments.length>1&&void 0!==arguments[1]?arguments[1]:O(e)).contents().detach()}},ue={Dom:ce,supportsRenderLifecycle:!0,supportsDestroyLifecycle:!0,_isDestroyed:!1,isDestroyed:function(){return!!this._isDestroyed},_isRendered:!1,isRendered:function(){return!!this._isRendered},_isAttached:!1,isAttached:function(){return!!this._isAttached},delegateEvents:function(i){this._proxyBehaviorViewProperties(),this._buildEventProxies();var n=this._getEvents(i);void 0===i&&(this.events=n);var s=t.extend({},this._getBehaviorEvents(),n,this._getBehaviorTriggers(),this.getTriggers());return e.View.prototype.delegateEvents.call(this,s),this},_getEvents:function(e){var i=e||this.events;return t.isFunction(i)?this.normalizeUIKeys(i.call(this)):this.normalizeUIKeys(i)},getTriggers:function(){if(this.triggers){var e=this.normalizeUIKeys(t.result(this,"triggers"));return this._getViewTriggers(this,e)}},delegateEntityEvents:function(){return this._delegateEntityEvents(this.model,this.collection),this._delegateBehaviorEntityEvents(),this},undelegateEntityEvents:function(){return this._undelegateEntityEvents(this.model,this.collection),this._undelegateBehaviorEntityEvents(),this},destroy:function(){if(this._isDestroyed)return this;for(var e=this._isAttached&&!this._shouldDisableEvents,t=arguments.length,i=Array(t),n=0;n<t;n++)i[n]=arguments[n];return this.triggerMethod.apply(this,["before:destroy",this].concat(i)),e&&this.triggerMethod("before:detach",this),this.unbindUIElements(),this._removeElement(),e&&(this._isAttached=!1,this.triggerMethod("detach",this)),this._removeChildren(),this._isDestroyed=!0,this._isRendered=!1,this._destroyBehaviors.apply(this,i),this.triggerMethod.apply(this,["destroy",this].concat(i)),this.stopListening(),this},_removeElement:function(){this.$el.off().removeData(),this.Dom.detachEl(this.el,this.$el)},bindUIElements:function(){return this._bindUIElements(),this._bindBehaviorUIElements(),this},unbindUIElements:function(){return this._unbindUIElements(),this._unbindBehaviorUIElements(),this},getUI:function(e){return this._getUI(e)},childViewEventPrefix:function(){return!!D("childViewEventPrefix")&&"childview"},triggerMethod:function(){var e=s.apply(this,arguments);return this._triggerEventOnBehaviors.apply(this,arguments),e},_buildEventProxies:function(){this._childViewEvents=t.result(this,"childViewEvents"),this._childViewTriggers=t.result(this,"childViewTriggers")},_proxyChildViewEvents:function(e){this.listenTo(e,"all",this._childViewEventHandler)},_childViewEventHandler:function(e){for(var i=this.normalizeMethods(this._childViewEvents),n=arguments.length,s=Array(n>1?n-1:0),r=1;r<n;r++)s[r-1]=arguments[r];void 0!==i&&t.isFunction(i[e])&&i[e].apply(this,s);var o=this._childViewTriggers;o&&t.isString(o[e])&&this.triggerMethod.apply(this,[o[e]].concat(s));var h=t.result(this,"childViewEventPrefix");if(!1!==h){var d=h+":"+e;this.triggerMethod.apply(this,[d].concat(s))}}};t.extend(ue,te,Z,ie,oe,ae);var fe=["allowMissingEl","parentEl","replaceElement"],_e=Q.extend({Dom:ce,cidPrefix:"mnr",replaceElement:!1,_isReplaced:!1,_isSwappingView:!1,constructor:function(t){if(this._setOptions(t),this.mergeOptions(t,fe),this._initEl=this.el=this.getOption("el"),this.el=this.el instanceof e.$?this.el[0]:this.el,!this.el)throw new Y({name:"NoElError",message:'An "el" must be specified for a region.'});this.$el=this.getEl(this.el),Q.call(this,t)},show:function(e,t){if(this._ensureElement(t))return(e=this._getView(e,t))===this.currentView?this:(this._isSwappingView=!!this.currentView,this.triggerMethod("before:show",this,e,t),e._isAttached||this.empty(t),this._setupChildView(e),this.currentView=e,$(e),this._attachView(e,t),this.triggerMethod("show",this,e,t),this._isSwappingView=!1,this)},_setupChildView:function(e){w(e),this._proxyChildViewEvents(e),e.on("destroy",this._empty,this)},_proxyChildViewEvents:function(e){var t=this._parentView;t&&t._proxyChildViewEvents(e)},_shouldDisableMonitoring:function(){return this._parentView&&!1===this._parentView.monitorViewEvents},_attachView:function(e){var i=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},n=!e._isAttached&&k(this.el)&&!this._shouldDisableMonitoring(),s=void 0===i.replaceElement?!!t.result(this,"replaceElement"):!!i.replaceElement;n&&r(e,"before:attach",e),s?this._replaceEl(e):this.attachHtml(e),n&&(e._isAttached=!0,r(e,"attach",e))},_ensureElement:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};if(t.isObject(this.el)||(this.$el=this.getEl(this.el),this.el=this.$el[0],this.$el=this.Dom.getEl(this.el)),!this.$el||0===this.$el.length){if(void 0===e.allowMissingEl?!!t.result(this,"allowMissingEl"):!!e.allowMissingEl)return!1;throw new Y('An "el" must exist in DOM for this region '+this.cid)}return!0},_getView:function(t){if(!t)throw new Y({name:"ViewNotValid",message:"The view passed is undefined and therefore invalid. You must pass a view instance to show."});if(t._isDestroyed)throw new Y({name:"ViewDestroyedError",message:'View (cid: "'+t.cid+'") has already been destroyed and cannot be used.'});if(t instanceof e.View)return t;var i=this._getViewOptions(t);return new we(i)},_getViewOptions:function(e){if(t.isFunction(e))return{template:e};if(t.isObject(e))return e;return{template:function(){return e}}},getEl:function(e){var i=t.result(this,"parentEl");return i&&t.isString(e)?this.Dom.findEl(i,e):this.Dom.getEl(e)},_replaceEl:function(e){this._restoreEl(),e.on("before:destroy",this._restoreEl,this),this.Dom.replaceEl(e.el,this.el),this._isReplaced=!0},_restoreEl:function(){if(this._isReplaced){var e=this.currentView;e&&(this._detachView(e),this._isReplaced=!1)}},isReplaced:function(){return!!this._isReplaced},isSwappingView:function(){return!!this._isSwappingView},attachHtml:function(e){this.Dom.appendContents(this.el,e.el,{_$el:this.$el,_$contents:e.$el})},empty:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{allowMissingEl:!0},t=this.currentView;if(!t)return this._ensureElement(e)&&this.detachHtml(),this;var i=!e.preventDestroy;return i||z("The preventDestroy option is deprecated. Use Region#detachView"),this._empty(t,i),this},_empty:function(e,t){e.off("destroy",this._empty,this),this.triggerMethod("before:empty",this,e),this._restoreEl(),delete this.currentView,e._isDestroyed||(t?this.removeView(e):this._detachView(e),this._stopChildViewEvents(e)),this.triggerMethod("empty",this,e)},_stopChildViewEvents:function(e){this._parentView&&this._parentView.stopListening(e)},destroyView:function(e){return e._isDestroyed?e:(e._shouldDisableEvents=this._shouldDisableMonitoring(),T(e),e)},removeView:function(e){this.destroyView(e)},detachView:function(){var e=this.currentView;if(e)return this._empty(e),e},_detachView:function(e){var t=e._isAttached&&!this._shouldDisableMonitoring(),i=this._isReplaced;t&&r(e,"before:detach",e),i?this.Dom.replaceEl(this.el,e.el):this.detachHtml(),t&&(e._isAttached=!1,r(e,"detach",e))},detachHtml:function(){this.Dom.detachContents(this.el,this.$el)},hasView:function(){return!!this.currentView},reset:function(e){return this.empty(e),this.$el&&(this.el=this._initEl),delete this.$el,this},destroy:function(e){return this._isDestroyed?this:(this.reset(e),this._name&&this._parentView._removeReferences(this._name),delete this._parentView,delete this._name,Q.prototype.destroy.apply(this,arguments))}},{setDomApi:I}),pe=function(e,t){return e instanceof _e?e:U(e,t)},ge={regionClass:_e,_initRegions:function(){this.regions=this.regions||{},this._regions={},this.addRegions(t.result(this,"regions"))},_reInitRegions:function(){ee(this._regions,"reset")},addRegion:function(e,t){var i={};return i[e]=t,this.addRegions(i)[e]},addRegions:function(e){if(!t.isEmpty(e))return e=this.normalizeUIValues(e,["selector","el"]),this.regions=t.extend({},this.regions,e),this._addRegions(e)},_addRegions:function(e){var i=this,n={regionClass:this.regionClass,parentEl:t.partial(t.result,this,"el")};return t.reduce(e,function(e,t,s){return e[s]=pe(t,n),i._addRegion(e[s],s),e},{})},_addRegion:function(e,t){this.triggerMethod("before:add:region",this,t,e),e._parentView=this,e._name=t,this._regions[t]=e,this.triggerMethod("add:region",this,t,e)},removeRegion:function(e){var t=this._regions[e];return this._removeRegion(t,e),t},removeRegions:function(){var e=this._getRegions();return t.each(this._regions,t.bind(this._removeRegion,this)),e},_removeRegion:function(e,t){this.triggerMethod("before:remove:region",this,t,e),e.destroy(),this.triggerMethod("remove:region",this,t,e)},_removeReferences:function(e){delete this.regions[e],delete this._regions[e]},emptyRegions:function(){var e=this.getRegions();return ee(e,"empty"),e},hasRegion:function(e){return!!this.getRegion(e)},getRegion:function(e){return this._isRendered||this.render(),this._regions[e]},_getRegions:function(){return t.clone(this._regions)},getRegions:function(){return this._isRendered||this.render(),this._getRegions()},showChildView:function(e,t){for(var i=this.getRegion(e),n=arguments.length,s=Array(n>2?n-2:0),r=2;r<n;r++)s[r-2]=arguments[r];return i.show.apply(i,[t].concat(s))},detachChildView:function(e){return this.getRegion(e).detachView()},getChildView:function(e){return this.getRegion(e).currentView}},ve={render:function(e,i){if(!e)throw new Y({name:"TemplateNotFoundError",message:"Cannot render the template since its false, null or undefined."});return(t.isFunction(e)?e:X.get(e))(i)}},me=["behaviors","childViewEventPrefix","childViewEvents","childViewTriggers","collectionEvents","events","modelEvents","regionClass","regions","template","templateContext","triggers","ui"],we=e.View.extend({constructor:function(i){this.render=t.bind(this.render,this),this._setOptions(i),this.mergeOptions(i,me),w(this),this._initBehaviors(),this._initRegions();var n=Array.prototype.slice.call(arguments);n[0]=this.options,e.View.prototype.constructor.apply(this,n),this.delegateEntityEvents(),this._triggerEventOnBehaviors("initialize",this)},serializeData:function(){return this.model||this.collection?this.model?this.serializeModel():{items:this.serializeCollection()}:{}},serializeModel:function(){return this.model?t.clone(this.model.attributes):{}},serializeCollection:function(){return this.collection?this.collection.map(function(e){return t.clone(e.attributes)}):{}},setElement:function(){return e.View.prototype.setElement.apply(this,arguments),this._isRendered=this.Dom.hasContents(this.el),this._isAttached=k(this.el),this._isRendered&&this.bindUIElements(),this},render:function(){return this._isDestroyed?this:(this.triggerMethod("before:render",this),this._isRendered&&this._reInitRegions(),this._renderTemplate(),this.bindUIElements(),this._isRendered=!0,this.triggerMethod("render",this),this)},_renderTemplate:function(){var e=this.getTemplate();if(!1!==e){var t=this.mixinTemplateContext(this.serializeData()),i=this._renderHtml(e,t);this.attachElContent(i)}else z("template:false is deprecated.  Use _.noop.")},_renderHtml:function(e,t){return ve.render(e,t,this)},getTemplate:function(){return this.template},mixinTemplateContext:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},i=t.result(this,"templateContext");return t.extend(e,i)},attachElContent:function(e){return this.Dom.setContents(this.el,e,this.$el),this},_removeChildren:function(){this.removeRegions()},_getImmediateChildren:function(){return t.chain(this._getRegions()).map("currentView").compact().value()}},{setRenderer:function(e){return this.prototype._renderHtml=e,this},setDomApi:I});t.extend(we.prototype,ue,ge);var ye=["forEach","each","map","find","detect","filter","select","reject","every","all","some","any","include","contains","invoke","toArray","first","initial","rest","last","without","isEmpty","pluck","reduce","partition"],Ce=function(e,i){t.each(ye,function(n){e[n]=function(){var e=t.result(this,i),s=Array.prototype.slice.call(arguments);return t[n].apply(t,[e].concat(s))}})},Ve=function(e){this._views={},this._indexByModel={},this._indexByCustom={},this._updateLength(),t.each(e,t.bind(this.add,this))};Ce(Ve.prototype,"_getViews"),t.extend(Ve.prototype,{_getViews:function(){return t.values(this._views)},add:function(e,t){return this._add(e,t)._updateLength()},_add:function(e,t){var i=e.cid;return this._views[i]=e,e.model&&(this._indexByModel[e.model.cid]=i),t&&(this._indexByCustom[t]=i),this},findByModel:function(e){return this.findByModelCid(e.cid)},findByModelCid:function(e){var t=this._indexByModel[e];return this.findByCid(t)},findByCustom:function(e){var t=this._indexByCustom[e];return this.findByCid(t)},findByIndex:function(e){return t.values(this._views)[e]},findByCid:function(e){return this._views[e]},remove:function(e){return this._remove(e)._updateLength()},_remove:function(e){var i=e.cid;return e.model&&delete this._indexByModel[e.model.cid],t.some(this._indexByCustom,t.bind(function(e,t){if(e===i)return delete this._indexByCustom[t],!0},this)),delete this._views[i],this},_updateLength:function(){return this.length=t.size(this._views),this}});var Ee=["behaviors","childView","childViewEventPrefix","childViewEvents","childViewOptions","childViewTriggers","collectionEvents","events","filter","emptyView","emptyViewOptions","modelEvents","reorderOnSort","sort","triggers","ui","viewComparator"],be=e.View.extend({sort:!0,constructor:function(i){this.render=t.bind(this.render,this),this._setOptions(i),this.mergeOptions(i,Ee),w(this),this._initBehaviors(),this.once("render",this._initialEvents),this._initChildViewStorage(),this._bufferedChildren=[];var n=Array.prototype.slice.call(arguments);n[0]=this.options,e.View.prototype.constructor.apply(this,n),this.delegateEntityEvents(),this._triggerEventOnBehaviors("initialize",this)},_startBuffering:function(){this._isBuffering=!0},_endBuffering:function(){var e=this._isAttached&&!1!==this.monitorViewEvents?this._getImmediateChildren():[];this._isBuffering=!1,t.each(e,function(e){r(e,"before:attach",e)}),this.attachBuffer(this,this._createBuffer()),t.each(e,function(e){e._isAttached=!0,r(e,"attach",e)}),this._bufferedChildren=[]},_getImmediateChildren:function(){return t.values(this.children._views)},_initialEvents:function(){this.collection&&(this.listenTo(this.collection,"add",this._onCollectionAdd),this.listenTo(this.collection,"update",this._onCollectionUpdate),this.listenTo(this.collection,"reset",this.render),this.sort&&this.listenTo(this.collection,"sort",this._sortViews))},_onCollectionAdd:function(e,i,n){var s=void 0!==n.at&&(n.index||i.indexOf(e));(this.filter||!1===s)&&(s=t.indexOf(this._filteredSortedModels(s),e)),this._shouldAddChild(e,s)&&(this._destroyEmptyView(),this._addChild(e,s))},_onCollectionUpdate:function(e,t){var i=t.changes;this._removeChildModels(i.removed)},_removeChildModels:function(e){var t=this._getRemovedViews(e);t.length&&(this.children._updateLength(),this._updateIndices(t,!1),this.isEmpty()&&this._showEmptyView())},_getRemovedViews:function(e){var i=this;return t.reduce(e,function(e,t){var n=t&&i.children.findByModel(t);return!n||n._isDestroyed?e:(i._removeChildView(n),e.push(n),e)},[])},_removeChildView:function(e){this.triggerMethod("before:remove:child",this,e),this.children._remove(e),e._shouldDisableEvents=!1===this.monitorViewEvents,T(e),this.stopListening(e),this.triggerMethod("remove:child",this,e)},setElement:function(){return e.View.prototype.setElement.apply(this,arguments),this._isAttached=k(this.el),this},render:function(){return this._isDestroyed?this:(this.triggerMethod("before:render",this),this._renderChildren(),this._isRendered=!0,this.triggerMethod("render",this),this)},setFilter:function(e){var t=(arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}).preventRender,i=this._isRendered&&!this._isDestroyed,n=this.filter!==e;if(i&&n&&!t){var s=this._filteredSortedModels();this.filter=e;var r=this._filteredSortedModels();this._applyModelDeltas(r,s)}else this.filter=e;return this},removeFilter:function(e){return this.setFilter(null,e)},_applyModelDeltas:function(e,i){var n=this,s={};t.each(e,function(e,t){!n.children.findByModel(e)&&n._onCollectionAdd(e,n.collection,{at:t}),s[e.cid]=!0});var r=t.filter(i,function(e){return!s[e.cid]&&n.children.findByModel(e)});this._removeChildModels(r)},reorder:function(){var e=this,i=this.children,n=this._filteredSortedModels();if(!n.length&&this._showingEmptyView)return this;if(t.some(n,function(e){return!i.findByModel(e)}))this.render();else{var s=[],r=t.reduce(this.children._views,function(e,i){var r=t.indexOf(n,i.model);return-1===r?(s.push(i.model),e):(i._index=r,e[r]=i.el,e)},new Array(n.length));this.triggerMethod("before:reorder",this);var o=this.Dom.createBuffer();t.each(r,function(t){e.Dom.appendContents(o,t)}),this._appendReorderedChildren(o),this._removeChildModels(s),this.triggerMethod("reorder",this)}return this},resortView:function(){return this.reorderOnSort?this.reorder():this._renderChildren(),this},_sortViews:function(){var e=this,i=this._filteredSortedModels();t.find(i,function(t,i){var n=e.children.findByModel(t);return!n||n._index!==i})&&this.resortView()},_emptyViewIndex:-1,_appendReorderedChildren:function(e){this.Dom.appendContents(this.el,e,{_$el:this.$el})},_renderChildren:function(){this._isRendered&&(this._destroyEmptyView(),this._destroyChildren());var e=this._filteredSortedModels();this.isEmpty({processedModels:e})?this._showEmptyView():(this.triggerMethod("before:render:children",this),this._startBuffering(),this._showCollection(e),this._endBuffering(),this.triggerMethod("render:children",this))},_createView:function(e,t){var i=this._getChildView(e),n=this._getChildViewOptions(e,t);return this.buildChildView(e,i,n)},_setupChildView:function(e,t){w(e),this._proxyChildViewEvents(e),this.sort&&(e._index=t)},_showCollection:function(e){t.each(e,t.bind(this._addChild,this)),this.children._updateLength()},_filteredSortedModels:function(e){if(!this.collection||!this.collection.length)return[];var t=this.getViewComparator(),i=this.collection.models;if(e=Math.min(Math.max(e,0),i.length-1),t){var n=void 0;e&&(n=i[e],i=i.slice(0,e).concat(i.slice(e+1))),i=this._sortModelsBy(i,t),n&&i.splice(e,0,n)}return i=this._filterModels(i)},getViewComparator:function(){return this.viewComparator},_filterModels:function(e){var i=this;return this.filter&&(e=t.filter(e,function(e,t){return i._shouldAddChild(e,t)})),e},_sortModelsBy:function(e,i){return"string"==typeof i?t.sortBy(e,function(e){return e.get(i)}):1===i.length?t.sortBy(e,t.bind(i,this)):t.clone(e).sort(t.bind(i,this))},_showEmptyView:function(){var i=this._getEmptyView();if(i&&!this._showingEmptyView){this._showingEmptyView=!0;var n=new e.Model,s=this.emptyViewOptions||this.childViewOptions;t.isFunction(s)&&(s=s.call(this,n,this._emptyViewIndex));var r=this.buildChildView(n,i,s);this.triggerMethod("before:render:empty",this,r),this.addChildView(r,0),this.triggerMethod("render:empty",this,r)}},_destroyEmptyView:function(){this._showingEmptyView&&(this.triggerMethod("before:remove:empty",this),this._destroyChildren(),delete this._showingEmptyView,this.triggerMethod("remove:empty",this))},_getEmptyView:function(){var e=this.emptyView;if(e)return this._getView(e)},_getChildView:function(e){var t=this.childView;if(!t)throw new Y({name:"NoChildViewError",message:'A "childView" must be specified'});if(!(t=this._getView(t,e)))throw new Y({name:"InvalidChildViewError",message:'"childView" must be a view class or a function that returns a view class'});return t},_getView:function(i,n){return i.prototype instanceof e.View||i===e.View?i:t.isFunction(i)?i.call(this,n):void 0},_addChild:function(e,t){var i=this._createView(e,t);return this.addChildView(i,t),i},_getChildViewOptions:function(e,i){return t.isFunction(this.childViewOptions)?this.childViewOptions(e,i):this.childViewOptions},addChildView:function(e,t){return this.triggerMethod("before:add:child",this,e),this._setupChildView(e,t),this._isBuffering?this.children._add(e):(this._updateIndices(e,!0),this.children.add(e)),$(e),this._attachView(e,t),this.triggerMethod("add:child",this,e),e},_updateIndices:function(e,i){if(this.sort)if(i){var n=t.isArray(e)?t.max(e,"_index"):e;t.isObject(n)&&t.each(this.children._views,function(e){e._index>=n._index&&(e._index+=1)})}else t.each(t.sortBy(this.children._views,"_index"),function(e,t){e._index=t})},_attachView:function(e,t){var i=!e._isAttached&&!this._isBuffering&&this._isAttached&&!1!==this.monitorViewEvents;i&&r(e,"before:attach",e),this.attachHtml(this,e,t),i&&(e._isAttached=!0,r(e,"attach",e))},buildChildView:function(e,i,n){return new i(t.extend({model:e},n))},removeChildView:function(e){return!e||e._isDestroyed?e:(this._removeChildView(e),this.children._updateLength(),this._updateIndices(e,!1),e)},isEmpty:function(e){var i=void 0;return t.result(e,"processedModels")?i=e.processedModels:(i=this.collection?this.collection.models:[],i=this._filterModels(i)),0===i.length},attachBuffer:function(e,t){this.Dom.appendContents(e.el,t,{_$el:e.$el})},_createBuffer:function(){var e=this,i=this.Dom.createBuffer();return t.each(this._bufferedChildren,function(t){e.Dom.appendContents(i,t.el,{_$contents:t.$el})}),i},attachHtml:function(e,t,i){e._isBuffering?e._bufferedChildren.splice(i,0,t):e._insertBefore(t,i)||e._insertAfter(t)},_insertBefore:function(e,i){var n=void 0;return this.sort&&i<this.children.length-1&&(n=t.find(this.children._views,function(e){return e._index===i+1})),!!n&&(this.beforeEl(n.el,e.el),!0)},beforeEl:function(e,t){this.$(e).before(t)},_insertAfter:function(e){this.Dom.appendContents(this.el,e.el,{_$el:this.$el,_$contents:e.$el})},_initChildViewStorage:function(){this.children=new Ve},_removeChildren:function(){this._destroyChildren()},_destroyChildren:function(e){this.children.length&&(this.triggerMethod("before:destroy:children",this),t.each(this.children._views,t.bind(this._removeChildView,this)),this.children._updateLength(),this.triggerMethod("destroy:children",this))},_shouldAddChild:function(e,i){var n=this.filter;return!t.isFunction(n)||n.call(this,e,i,this.collection)}},{setDomApi:I});t.extend(be.prototype,ue);var Me=function(){this._init()};Ce(Me.prototype,"_views"),t.extend(Me.prototype,{_init:function(){this._views=[],this._viewsByCid={},this._indexByModel={},this._updateLength()},_add:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this._views.length,i=e.cid;this._viewsByCid[i]=e,e.model&&(this._indexByModel[e.model.cid]=i),this._views.splice(t,0,e),this._updateLength()},_sort:function(e,i){return"string"==typeof e?(e=t.partial(F,e),this._sortBy(e)):1===e.length?this._sortBy(t.bind(e,i)):this._views.sort(t.bind(e,i))},_sortBy:function(e){var i=t.sortBy(this._views,e);return this._set(i),i},_set:function(e){this._views.length=0,this._views.push.apply(this._views,e.slice(0)),this._updateLength()},_swap:function(e,t){var i=this.findIndexByView(e),n=this.findIndexByView(t);if(-1!==i&&-1!==n){var s=this._views[i];this._views[i]=this._views[n],this._views[n]=s}},findByModel:function(e){return this.findByModelCid(e.cid)},findByModelCid:function(e){var t=this._indexByModel[e];return this.findByCid(t)},findByIndex:function(e){return this._views[e]},findIndexByView:function(e){return this._views.indexOf(e)},findByCid:function(e){return this._viewsByCid[e]},hasView:function(e){return!!this.findByCid(e.cid)},_remove:function(e){if(this._viewsByCid[e.cid]){e.model&&delete this._indexByModel[e.model.cid],delete this._viewsByCid[e.cid];var t=this.findIndexByView(e);this._views.splice(t,1),this._updateLength()}},_updateLength:function(){this.length=this._views.length}});var Re=["behaviors","childView","childViewEventPrefix","childViewEvents","childViewOptions","childViewTriggers","collectionEvents","emptyView","emptyViewOptions","events","modelEvents","sortWithCollection","triggers","ui","viewComparator","viewFilter"],Be=e.View.extend({sortWithCollection:!0,constructor:function(t){this._setOptions(t),this.mergeOptions(t,Re),w(this),this.once("render",this._initialEvents),this._initChildViewStorage(),this._initBehaviors();var i=Array.prototype.slice.call(arguments);i[0]=this.options,e.View.prototype.constructor.apply(this,i),this.getEmptyRegion(),this.delegateEntityEvents(),this._triggerEventOnBehaviors("initialize",this)},_initChildViewStorage:function(){this.children=new Me},getEmptyRegion:function(){return this._emptyRegion&&!this._emptyRegion.isDestroyed()?this._emptyRegion:(this._emptyRegion=new _e({el:this.el,replaceElement:!1}),this._emptyRegion._parentView=this,this._emptyRegion)},_initialEvents:function(){this.listenTo(this.collection,{sort:this._onCollectionSort,reset:this._onCollectionReset,update:this._onCollectionUpdate})},_onCollectionSort:function(e,t){var i=t.add,n=t.merge,s=t.remove;this.sortWithCollection&&!1!==this.viewComparator&&(i||s||n||this.sort())},_onCollectionReset:function(){this.render()},_onCollectionUpdate:function(e,t){var i=t.changes,n=i.removed.length&&this._removeChildModels(i.removed);this._addedViews=i.added.length&&this._addChildModels(i.added),this._detachChildren(n),this._showChildren(),this._removeChildViews(n)},_removeChildModels:function(e){var i=this;return t.reduce(e,function(e,t){var n=i._removeChildModel(t);return n&&e.push(n),e},[])},_removeChildModel:function(e){var t=this.children.findByModel(e);return t&&this._removeChild(t),t},_removeChild:function(e){this.triggerMethod("before:remove:child",this,e),this.children._remove(e),this.triggerMethod("remove:child",this,e)},_addChildModels:function(e){return t.map(e,t.bind(this._addChildModel,this))},_addChildModel:function(e){var t=this._createChildView(e);return this._addChild(t),t},_createChildView:function(e){var t=this._getChildView(e),i=this._getChildViewOptions(e);return this.buildChildView(e,t,i)},_addChild:function(e,t){this.triggerMethod("before:add:child",this,e),this._setupChildView(e),this.children._add(e,t),this.triggerMethod("add:child",this,e)},_getChildView:function(e){var t=this.childView;if(!t)throw new Y({name:"NoChildViewError",message:'A "childView" must be specified'});if(!(t=this._getView(t,e)))throw new Y({name:"InvalidChildViewError",message:'"childView" must be a view class or a function that returns a view class'});return t},_getView:function(i,n){return i.prototype instanceof e.View||i===e.View?i:t.isFunction(i)?i.call(this,n):void 0},_getChildViewOptions:function(e){return t.isFunction(this.childViewOptions)?this.childViewOptions(e):this.childViewOptions},buildChildView:function(e,i,n){return new i(t.extend({model:e},n))},_setupChildView:function(e){w(e),e.on("destroy",this.removeChildView,this),this._proxyChildViewEvents(e)},_getImmediateChildren:function(){return this.children._views},setElement:function(){return e.View.prototype.setElement.apply(this,arguments),this._isAttached=k(this.el),this},render:function(){return this._isDestroyed?this:(this.triggerMethod("before:render",this),this._destroyChildren(),this.children._init(),this.collection&&this._addChildModels(this.collection.models),this._showChildren(),this._isRendered=!0,this.triggerMethod("render",this),this)},sort:function(){return this._isDestroyed?this:this.children.length?(this._showChildren(),this):this},_showChildren:function(){this.isEmpty()?this._showEmptyView():(this._sortChildren(),this.filter())},isEmpty:function(e){return e||!this.children.length},_showEmptyView:function(){var e=this._getEmptyView();if(e){var t=this._getEmptyViewOptions();this.getEmptyRegion().show(new e(t))}},_getEmptyView:function(){var e=this.emptyView;if(e)return this._getView(e)},_destroyEmptyView:function(){var e=this.getEmptyRegion();e.hasView()&&e.empty()},_getEmptyViewOptions:function(){var e=this.emptyViewOptions||this.childViewOptions;return t.isFunction(e)?e.call(this):e},_sortChildren:function(){var e=this.getComparator();e&&(delete this._addedViews,this.triggerMethod("before:sort",this),this.children._sort(e,this),this.triggerMethod("sort",this))},setComparator:function(e){var t=(arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}).preventRender,i=this.viewComparator!==e&&!t;return this.viewComparator=e,i&&this.sort(),this},removeComparator:function(e){return this.setComparator(null,e)},getComparator:function(){return this.viewComparator?this.viewComparator:!(!this.sortWithCollection||!1===this.viewComparator||!this.collection)&&this._viewComparator},_viewComparator:function(e){return this.collection.indexOf(e.model)},filter:function(){if(this._isDestroyed)return this;if(!this.children.length)return this;var e=this._filterChildren();return this._renderChildren(e),this},_filterChildren:function(){var e=this,i=this._getFilter(),n=this._addedViews;if(delete this._addedViews,!i)return n||this.children._views;this.triggerMethod("before:filter",this);var s=[],r=[];return t.each(this.children._views,function(t,n,o){(i.call(e,t,n,o)?s:r).push(t)}),this._detachChildren(r),this.triggerMethod("filter",this,s,r),s},_getFilter:function(){var e=this.getFilter();if(!e)return!1;if(t.isFunction(e))return e;if(t.isObject(e)){var i=t.matches(e);return function(e){return i(e.model&&e.model.attributes)}}if(t.isString(e))return function(t){return t.model&&t.model.get(e)};throw new Y({name:"InvalidViewFilterError",message:'"viewFilter" must be a function, predicate object literal, a string indicating a model attribute, or falsy'})},getFilter:function(){return this.viewFilter},setFilter:function(e){var t=(arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}).preventRender,i=this.viewFilter!==e&&!t;return this.viewFilter=e,i&&this.filter(),this},removeFilter:function(e){return this.setFilter(null,e)},_detachChildren:function(e){t.each(e,t.bind(this._detachChildView,this))},_detachChildView:function(e){var t=e._isAttached&&!1!==this.monitorViewEvents;t&&r(e,"before:detach",e),this.detachHtml(e),t&&(e._isAttached=!1,r(e,"detach",e))},detachHtml:function(e){this.Dom.detachEl(e.el,e.$el)},_renderChildren:function(e){if(this.isEmpty(!e.length))this._showEmptyView();else{this._destroyEmptyView(),this.triggerMethod("before:render:children",this,e);var t=this._getBuffer(e);this._attachChildren(t,e),this.triggerMethod("render:children",this,e)}},_attachChildren:function(e,i){i=this._isAttached&&!1!==this.monitorViewEvents?i:[],t.each(i,function(e){e._isAttached||r(e,"before:attach",e)}),this.attachHtml(e),t.each(i,function(e){e._isAttached||(e._isAttached=!0,r(e,"attach",e))})},_getBuffer:function(e){var i=this,n=this.Dom.createBuffer();return t.each(e,function(e){$(e),i.Dom.appendContents(n,e.el,{_$contents:e.$el})}),n},attachHtml:function(e){this.Dom.appendContents(this.el,e,{_$el:this.$el})},swapChildViews:function(e,t){if(!this.children.hasView(e)||!this.children.hasView(t))throw new Y({name:"ChildSwapError",message:"Both views must be children of the collection view"});return this.children._swap(e,t),this.Dom.swapEl(e.el,t.el),this.Dom.hasEl(this.el,e.el)!==this.Dom.hasEl(this.el,t.el)&&this.filter(),this},addChildView:function(e,t){return!e||e._isDestroyed?e:((!t||t>=this.children.length)&&(this._addedViews=[e]),this._addChild(e,t),this._showChildren(),e)},detachChildView:function(e){return this.removeChildView(e,{shouldDetach:!0}),e},removeChildView:function(e,t){return e?(this._removeChildView(e,t),this._removeChild(e),this.isEmpty()&&this._showEmptyView(),e):e},_removeChildViews:function(e){t.each(e,t.bind(this._removeChildView,this))},_removeChildView:function(e){var t=(arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}).shouldDetach;e.off("destroy",this.removeChildView,this),t?this._detachChildView(e):this._destroyChildView(e),this.stopListening(e)},_destroyChildView:function(e){e._isDestroyed||(e._shouldDisableEvents=!1===this.monitorViewEvents,T(e))},_removeChildren:function(){this._destroyChildren(),this.getEmptyRegion().destroy(),delete this._addedViews},_destroyChildren:function(){this.children&&this.children.length&&(this.triggerMethod("before:destroy:children",this),!1===this.monitorViewEvents&&this.Dom.detachContents(this.el,this.$el),t.each(this.children._views,t.bind(this._removeChildView,this)),this.triggerMethod("destroy:children",this))}},{setDomApi:I});t.extend(Be.prototype,ue);var xe=["childViewContainer","template","templateContext"],De=be.extend({constructor:function(e){z("CompositeView is deprecated. Convert to View at your earliest convenience"),this.mergeOptions(e,xe),be.prototype.constructor.apply(this,arguments)},_initialEvents:function(){this.collection&&(this.listenTo(this.collection,"add",this._onCollectionAdd),this.listenTo(this.collection,"update",this._onCollectionUpdate),this.listenTo(this.collection,"reset",this.renderChildren),this.sort&&this.listenTo(this.collection,"sort",this._sortViews))},_getChildView:function(e){var t=this.childView;if(!t)return this.constructor;if(!(t=this._getView(t,e)))throw new Y({name:"InvalidChildViewError",message:'"childView" must be a view class or a function that returns a view class'});return t},serializeData:function(){return this.serializeModel()},render:function(){return this._isDestroyed?this:(this._isRendering=!0,this.resetChildViewContainer(),this.triggerMethod("before:render",this),this._renderTemplate(),this.bindUIElements(),this.renderChildren(),this._isRendering=!1,this._isRendered=!0,this.triggerMethod("render",this),this)},renderChildren:function(){(this._isRendered||this._isRendering)&&be.prototype._renderChildren.call(this)},attachBuffer:function(e,t){var i=this.getChildViewContainer(e);this.Dom.appendContents(i[0],t,{_$el:i})},_insertAfter:function(e){var t=this.getChildViewContainer(this,e);this.Dom.appendContents(t[0],e.el,{_$el:t,_$contents:e.$el})},_appendReorderedChildren:function(e){var t=this.getChildViewContainer(this);this.Dom.appendContents(t[0],e,{_$el:t})},getChildViewContainer:function(e,i){if(e.$childViewContainer)return e.$childViewContainer;var n=void 0;if(e.childViewContainer){var s=t.result(e,"childViewContainer");if((n="@"===s.charAt(0)&&e.ui?e.ui[s.substr(4)]:this.$(s)).length<=0)throw new Y({name:"ChildViewContainerMissingError",message:'The specified "childViewContainer" was not found: '+e.childViewContainer})}else n=e.$el;return e.$childViewContainer=n,n},resetChildViewContainer:function(){this.$childViewContainer&&(this.$childViewContainer=void 0)}}),Ae=t.pick(we.prototype,"serializeModel","getTemplate","_renderTemplate","_renderHtml","mixinTemplateContext","attachElContent");t.extend(De.prototype,Ae);var Oe=["collectionEvents","events","modelEvents","triggers","ui"],Ie=Q.extend({cidPrefix:"mnb",constructor:function(e,i){this.view=i,this.defaults&&z("Behavior defaults are deprecated. 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this._delegateEntityEvents(this.model,this.collection),this._delegateBehaviorEntityEvents(),this},undelegateEntityEvents:function(){return this._undelegateEntityEvents(this.model,this.collection),this._undelegateBehaviorEntityEvents(),this},destroy:function(){if(this._isDestroyed)return this;for(var e=this._isAttached&&!this._shouldDisableEvents,t=arguments.length,i=Array(t),n=0;n<t;n++)i[n]=arguments[n];return this.triggerMethod.apply(this,["before:destroy",this].concat(i)),e&&this.triggerMethod("before:detach",this),this.unbindUIElements(),this._removeElement(),e&&(this._isAttached=!1,this.triggerMethod("detach",this)),this._removeChildren(),this._isDestroyed=!0,this._isRendered=!1,this._destroyBehaviors.apply(this,i),this.triggerMethod.apply(this,["destroy",this].concat(i)),this.stopListening(),this},_removeElement:function(){this.$el.off().removeData(),this.Dom.detachEl(this.el,this.$el)},bindUIElements:function(){return this._bindUIElements(),this._bindBehaviorUIElements(),this},unbindUIElements:function(){return this._unbindUIElements(),this._unbindBehaviorUIElements(),this},getUI:function(e){return this._getUI(e)},childViewEventPrefix:function(){return!!D("childViewEventPrefix")&&"childview"},triggerMethod:function(){var e=s.apply(this,arguments);return this._triggerEventOnBehaviors.apply(this,arguments),e},_buildEventProxies:function(){this._childViewEvents=t.result(this,"childViewEvents"),this._childViewTriggers=t.result(this,"childViewTriggers")},_proxyChildViewEvents:function(e){this.listenTo(e,"all",this._childViewEventHandler)},_childViewEventHandler:function(e){for(var i=this.normalizeMethods(this._childViewEvents),n=arguments.length,s=Array(n>1?n-1:0),r=1;r<n;r++)s[r-1]=arguments[r];void 0!==i&&t.isFunction(i[e])&&i[e].apply(this,s);var o=this._childViewTriggers;o&&t.isString(o[e])&&this.triggerMethod.apply(this,[o[e]].concat(s));var h=t.result(this,"childViewEventPrefix");if(!1!==h){var d=h+":"+e;this.triggerMethod.apply(this,[d].concat(s))}}};t.extend(ue,te,Z,ie,oe,ae);var fe=["allowMissingEl","parentEl","replaceElement"],_e=Q.extend({Dom:ce,cidPrefix:"mnr",replaceElement:!1,_isReplaced:!1,_isSwappingView:!1,constructor:function(t){if(this._setOptions(t),this.mergeOptions(t,fe),this._initEl=this.el=this.getOption("el"),this.el=this.el instanceof e.$?this.el[0]:this.el,!this.el)throw new Y({name:"NoElError",message:'An "el" must be specified for a region.'});this.$el=this.getEl(this.el),Q.call(this,t)},show:function(e,t){if(this._ensureElement(t))return(e=this._getView(e,t))===this.currentView?this:(this._isSwappingView=!!this.currentView,this.triggerMethod("before:show",this,e,t),e._isAttached||this.empty(t),this._setupChildView(e),this.currentView=e,$(e),this._attachView(e,t),this.triggerMethod("show",this,e,t),this._isSwappingView=!1,this)},_setupChildView:function(e){w(e),this._proxyChildViewEvents(e),e.on("destroy",this._empty,this)},_proxyChildViewEvents:function(e){var t=this._parentView;t&&t._proxyChildViewEvents(e)},_shouldDisableMonitoring:function(){return this._parentView&&!1===this._parentView.monitorViewEvents},_attachView:function(e){var i=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},n=!e._isAttached&&k(this.el)&&!this._shouldDisableMonitoring(),s=void 0===i.replaceElement?!!t.result(this,"replaceElement"):!!i.replaceElement;n&&r(e,"before:attach",e),s?this._replaceEl(e):this.attachHtml(e),n&&(e._isAttached=!0,r(e,"attach",e))},_ensureElement:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};if(t.isObject(this.el)||(this.$el=this.getEl(this.el),this.el=this.$el[0],this.$el=this.Dom.getEl(this.el)),!this.$el||0===this.$el.length){if(void 0===e.allowMissingEl?!!t.result(this,"allowMissingEl"):!!e.allowMissingEl)return!1;throw new Y('An "el" must exist in DOM for this region '+this.cid)}return!0},_getView:function(t){if(!t)throw new Y({name:"ViewNotValid",message:"The view passed is undefined and therefore invalid. You must pass a view instance to show."});if(t._isDestroyed)throw new Y({name:"ViewDestroyedError",message:'View (cid: "'+t.cid+'") has already been destroyed and cannot be used.'});if(t instanceof e.View)return t;var i=this._getViewOptions(t);return new we(i)},_getViewOptions:function(e){if(t.isFunction(e))return{template:e};if(t.isObject(e))return e;return{template:function(){return e}}},getEl:function(e){var i=t.result(this,"parentEl");return i&&t.isString(e)?this.Dom.findEl(i,e):this.Dom.getEl(e)},_replaceEl:function(e){this._restoreEl(),e.on("before:destroy",this._restoreEl,this),this.Dom.replaceEl(e.el,this.el),this._isReplaced=!0},_restoreEl:function(){if(this._isReplaced){var e=this.currentView;e&&(this._detachView(e),this._isReplaced=!1)}},isReplaced:function(){return!!this._isReplaced},isSwappingView:function(){return!!this._isSwappingView},attachHtml:function(e){this.Dom.appendContents(this.el,e.el,{_$el:this.$el,_$contents:e.$el})},empty:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{allowMissingEl:!0},t=this.currentView;if(!t)return this._ensureElement(e)&&this.detachHtml(),this;var i=!e.preventDestroy;return i||z("The preventDestroy option is deprecated. Use Region#detachView"),this._empty(t,i),this},_empty:function(e,t){e.off("destroy",this._empty,this),this.triggerMethod("before:empty",this,e),this._restoreEl(),delete this.currentView,e._isDestroyed||(t?this.removeView(e):this._detachView(e),this._stopChildViewEvents(e)),this.triggerMethod("empty",this,e)},_stopChildViewEvents:function(e){this._parentView&&this._parentView.stopListening(e)},destroyView:function(e){return e._isDestroyed?e:(e._shouldDisableEvents=this._shouldDisableMonitoring(),T(e),e)},removeView:function(e){this.destroyView(e)},detachView:function(){var e=this.currentView;if(e)return this._empty(e),e},_detachView:function(e){var t=e._isAttached&&!this._shouldDisableMonitoring(),i=this._isReplaced;t&&r(e,"before:detach",e),i?this.Dom.replaceEl(this.el,e.el):this.detachHtml(),t&&(e._isAttached=!1,r(e,"detach",e))},detachHtml:function(){this.Dom.detachContents(this.el,this.$el)},hasView:function(){return!!this.currentView},reset:function(e){return this.empty(e),this.$el&&(this.el=this._initEl),delete this.$el,this},destroy:function(e){return this._isDestroyed?this:(this.reset(e),this._name&&this._parentView._removeReferences(this._name),delete this._parentView,delete this._name,Q.prototype.destroy.apply(this,arguments))}},{setDomApi:I}),pe=function(e,t){return e instanceof _e?e:U(e,t)},ge={regionClass:_e,_initRegions:function(){this.regions=this.regions||{},this._regions={},this.addRegions(t.result(this,"regions"))},_reInitRegions:function(){ee(this._regions,"reset")},addRegion:function(e,t){var i={};return i[e]=t,this.addRegions(i)[e]},addRegions:function(e){if(!t.isEmpty(e))return e=this.normalizeUIValues(e,["selector","el"]),this.regions=t.extend({},this.regions,e),this._addRegions(e)},_addRegions:function(e){var i=this,n={regionClass:this.regionClass,parentEl:t.partial(t.result,this,"el")};return t.reduce(e,function(e,t,s){return e[s]=pe(t,n),i._addRegion(e[s],s),e},{})},_addRegion:function(e,t){this.triggerMethod("before:add:region",this,t,e),e._parentView=this,e._name=t,this._regions[t]=e,this.triggerMethod("add:region",this,t,e)},removeRegion:function(e){var t=this._regions[e];return this._removeRegion(t,e),t},removeRegions:function(){var e=this._getRegions();return t.each(this._regions,t.bind(this._removeRegion,this)),e},_removeRegion:function(e,t){this.triggerMethod("before:remove:region",this,t,e),e.destroy(),this.triggerMethod("remove:region",this,t,e)},_removeReferences:function(e){delete this.regions[e],delete this._regions[e]},emptyRegions:function(){var e=this.getRegions();return ee(e,"empty"),e},hasRegion:function(e){return!!this.getRegion(e)},getRegion:function(e){return this._isRendered||this.render(),this._regions[e]},_getRegions:function(){return t.clone(this._regions)},getRegions:function(){return this._isRendered||this.render(),this._getRegions()},showChildView:function(e,t){for(var i=this.getRegion(e),n=arguments.length,s=Array(n>2?n-2:0),r=2;r<n;r++)s[r-2]=arguments[r];return i.show.apply(i,[t].concat(s))},detachChildView:function(e){return this.getRegion(e).detachView()},getChildView:function(e){return this.getRegion(e).currentView}},ve={render:function(e,i){if(!e)throw new Y({name:"TemplateNotFoundError",message:"Cannot render the template since its false, null or undefined."});return(t.isFunction(e)?e:X.get(e))(i)}},me=["behaviors","childViewEventPrefix","childViewEvents","childViewTriggers","collectionEvents","events","modelEvents","regionClass","regions","template","templateContext","triggers","ui"],we=e.View.extend({constructor:function(i){this.render=t.bind(this.render,this),this._setOptions(i),this.mergeOptions(i,me),w(this),this._initBehaviors(),this._initRegions();var n=Array.prototype.slice.call(arguments);n[0]=this.options,e.View.prototype.constructor.apply(this,n),this.delegateEntityEvents(),this._triggerEventOnBehaviors("initialize",this)},serializeData:function(){return this.model||this.collection?this.model?this.serializeModel():{items:this.serializeCollection()}:{}},serializeModel:function(){return this.model?t.clone(this.model.attributes):{}},serializeCollection:function(){return this.collection?this.collection.map(function(e){return t.clone(e.attributes)}):{}},setElement:function(){return e.View.prototype.setElement.apply(this,arguments),this._isRendered=this.Dom.hasContents(this.el),this._isAttached=k(this.el),this._isRendered&&this.bindUIElements(),this},render:function(){return this._isDestroyed?this:(this.triggerMethod("before:render",this),this._isRendered&&this._reInitRegions(),this._renderTemplate(),this.bindUIElements(),this._isRendered=!0,this.triggerMethod("render",this),this)},_renderTemplate:function(){var e=this.getTemplate();if(!1!==e){var t=this.mixinTemplateContext(this.serializeData()),i=this._renderHtml(e,t);this.attachElContent(i)}else z("template:false is deprecated.  Use _.noop.")},_renderHtml:function(e,t){return ve.render(e,t,this)},getTemplate:function(){return this.template},mixinTemplateContext:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},i=t.result(this,"templateContext");return t.extend(e,i)},attachElContent:function(e){return this.Dom.setContents(this.el,e,this.$el),this},_removeChildren:function(){this.removeRegions()},_getImmediateChildren:function(){return t.chain(this._getRegions()).map("currentView").compact().value()}},{setRenderer:function(e){return this.prototype._renderHtml=e,this},setDomApi:I});t.extend(we.prototype,ue,ge);var ye=["forEach","each","map","find","detect","filter","select","reject","every","all","some","any","include","contains","invoke","toArray","first","initial","rest","last","without","isEmpty","pluck","reduce","partition"],Ce=function(e,i){t.each(ye,function(n){e[n]=function(){var e=t.result(this,i),s=Array.prototype.slice.call(arguments);return t[n].apply(t,[e].concat(s))}})},Ve=function(e){this._views={},this._indexByModel={},this._indexByCustom={},this._updateLength(),t.each(e,t.bind(this.add,this))};Ce(Ve.prototype,"_getViews"),t.extend(Ve.prototype,{_getViews:function(){return t.values(this._views)},add:function(e,t){return this._add(e,t)._updateLength()},_add:function(e,t){var i=e.cid;return this._views[i]=e,e.model&&(this._indexByModel[e.model.cid]=i),t&&(this._indexByCustom[t]=i),this},findByModel:function(e){return this.findByModelCid(e.cid)},findByModelCid:function(e){var t=this._indexByModel[e];return this.findByCid(t)},findByCustom:function(e){var t=this._indexByCustom[e];return this.findByCid(t)},findByIndex:function(e){return t.values(this._views)[e]},findByCid:function(e){return this._views[e]},remove:function(e){return this._remove(e)._updateLength()},_remove:function(e){var i=e.cid;return e.model&&delete this._indexByModel[e.model.cid],t.some(this._indexByCustom,t.bind(function(e,t){if(e===i)return delete this._indexByCustom[t],!0},this)),delete this._views[i],this},_updateLength:function(){return this.length=t.size(this._views),this}});var Ee=["behaviors","childView","childViewEventPrefix","childViewEvents","childViewOptions","childViewTriggers","collectionEvents","events","filter","emptyView","emptyViewOptions","modelEvents","reorderOnSort","sort","triggers","ui","viewComparator"],be=e.View.extend({sort:!0,constructor:function(i){this.render=t.bind(this.render,this),this._setOptions(i),this.mergeOptions(i,Ee),w(this),this._initBehaviors(),this.once("render",this._initialEvents),this._initChildViewStorage(),this._bufferedChildren=[];var n=Array.prototype.slice.call(arguments);n[0]=this.options,e.View.prototype.constructor.apply(this,n),this.delegateEntityEvents(),this._triggerEventOnBehaviors("initialize",this)},_startBuffering:function(){this._isBuffering=!0},_endBuffering:function(){var e=this._isAttached&&!1!==this.monitorViewEvents?this._getImmediateChildren():[];this._isBuffering=!1,t.each(e,function(e){r(e,"before:attach",e)}),this.attachBuffer(this,this._createBuffer()),t.each(e,function(e){e._isAttached=!0,r(e,"attach",e)}),this._bufferedChildren=[]},_getImmediateChildren:function(){return t.values(this.children._views)},_initialEvents:function(){this.collection&&(this.listenTo(this.collection,"add",this._onCollectionAdd),this.listenTo(this.collection,"update",this._onCollectionUpdate),this.listenTo(this.collection,"reset",this.render),this.sort&&this.listenTo(this.collection,"sort",this._sortViews))},_onCollectionAdd:function(e,i,n){var s=void 0!==n.at&&(n.index||i.indexOf(e));(this.filter||!1===s)&&(s=t.indexOf(this._filteredSortedModels(s),e)),this._shouldAddChild(e,s)&&(this._destroyEmptyView(),this._addChild(e,s))},_onCollectionUpdate:function(e,t){var i=t.changes;this._removeChildModels(i.removed)},_removeChildModels:function(e){var t=this._getRemovedViews(e);t.length&&(this.children._updateLength(),this._updateIndices(t,!1),this.isEmpty()&&this._showEmptyView())},_getRemovedViews:function(e){var i=this;return t.reduce(e,function(e,t){var n=t&&i.children.findByModel(t);return!n||n._isDestroyed?e:(i._removeChildView(n),e.push(n),e)},[])},_removeChildView:function(e){this.triggerMethod("before:remove:child",this,e),this.children._remove(e),e._shouldDisableEvents=!1===this.monitorViewEvents,T(e),this.stopListening(e),this.triggerMethod("remove:child",this,e)},setElement:function(){return e.View.prototype.setElement.apply(this,arguments),this._isAttached=k(this.el),this},render:function(){return this._isDestroyed?this:(this.triggerMethod("before:render",this),this._renderChildren(),this._isRendered=!0,this.triggerMethod("render",this),this)},setFilter:function(e){var t=(arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}).preventRender,i=this._isRendered&&!this._isDestroyed,n=this.filter!==e;if(i&&n&&!t){var s=this._filteredSortedModels();this.filter=e;var r=this._filteredSortedModels();this._applyModelDeltas(r,s)}else this.filter=e;return this},removeFilter:function(e){return this.setFilter(null,e)},_applyModelDeltas:function(e,i){var n=this,s={};t.each(e,function(e,t){!n.children.findByModel(e)&&n._onCollectionAdd(e,n.collection,{at:t}),s[e.cid]=!0});var r=t.filter(i,function(e){return!s[e.cid]&&n.children.findByModel(e)});this._removeChildModels(r)},reorder:function(){var e=this,i=this.children,n=this._filteredSortedModels();if(!n.length&&this._showingEmptyView)return this;if(t.some(n,function(e){return!i.findByModel(e)}))this.render();else{var s=[],r=t.reduce(this.children._views,function(e,i){var r=t.indexOf(n,i.model);return-1===r?(s.push(i.model),e):(i._index=r,e[r]=i.el,e)},new Array(n.length));this.triggerMethod("before:reorder",this);var o=this.Dom.createBuffer();t.each(r,function(t){e.Dom.appendContents(o,t)}),this._appendReorderedChildren(o),this._removeChildModels(s),this.triggerMethod("reorder",this)}return this},resortView:function(){return this.reorderOnSort?this.reorder():this._renderChildren(),this},_sortViews:function(){var e=this,i=this._filteredSortedModels();t.find(i,function(t,i){var n=e.children.findByModel(t);return!n||n._index!==i})&&this.resortView()},_emptyViewIndex:-1,_appendReorderedChildren:function(e){this.Dom.appendContents(this.el,e,{_$el:this.$el})},_renderChildren:function(){this._isRendered&&(this._destroyEmptyView(),this._destroyChildren());var e=this._filteredSortedModels();this.isEmpty({processedModels:e})?this._showEmptyView():(this.triggerMethod("before:render:children",this),this._startBuffering(),this._showCollection(e),this._endBuffering(),this.triggerMethod("render:children",this))},_createView:function(e,t){var i=this._getChildView(e),n=this._getChildViewOptions(e,t);return this.buildChildView(e,i,n)},_setupChildView:function(e,t){w(e),this._proxyChildViewEvents(e),this.sort&&(e._index=t)},_showCollection:function(e){t.each(e,t.bind(this._addChild,this)),this.children._updateLength()},_filteredSortedModels:function(e){if(!this.collection||!this.collection.length)return[];var t=this.getViewComparator(),i=this.collection.models;if(e=Math.min(Math.max(e,0),i.length-1),t){var n=void 0;e&&(n=i[e],i=i.slice(0,e).concat(i.slice(e+1))),i=this._sortModelsBy(i,t),n&&i.splice(e,0,n)}return i=this._filterModels(i)},getViewComparator:function(){return this.viewComparator},_filterModels:function(e){var i=this;return this.filter&&(e=t.filter(e,function(e,t){return i._shouldAddChild(e,t)})),e},_sortModelsBy:function(e,i){return"string"==typeof i?t.sortBy(e,function(e){return e.get(i)}):1===i.length?t.sortBy(e,t.bind(i,this)):t.clone(e).sort(t.bind(i,this))},_showEmptyView:function(){var i=this._getEmptyView();if(i&&!this._showingEmptyView){this._showingEmptyView=!0;var n=new e.Model,s=this.emptyViewOptions||this.childViewOptions;t.isFunction(s)&&(s=s.call(this,n,this._emptyViewIndex));var r=this.buildChildView(n,i,s);this.triggerMethod("before:render:empty",this,r),this.addChildView(r,0),this.triggerMethod("render:empty",this,r)}},_destroyEmptyView:function(){this._showingEmptyView&&(this.triggerMethod("before:remove:empty",this),this._destroyChildren(),delete this._showingEmptyView,this.triggerMethod("remove:empty",this))},_getEmptyView:function(){var e=this.emptyView;if(e)return this._getView(e)},_getChildView:function(e){var t=this.childView;if(!t)throw new Y({name:"NoChildViewError",message:'A "childView" must be specified'});if(!(t=this._getView(t,e)))throw new Y({name:"InvalidChildViewError",message:'"childView" must be a view class or a function that returns a view class'});return t},_getView:function(i,n){return i.prototype instanceof e.View||i===e.View?i:t.isFunction(i)?i.call(this,n):void 0},_addChild:function(e,t){var i=this._createView(e,t);return this.addChildView(i,t),i},_getChildViewOptions:function(e,i){return t.isFunction(this.childViewOptions)?this.childViewOptions(e,i):this.childViewOptions},addChildView:function(e,t){return this.triggerMethod("before:add:child",this,e),this._setupChildView(e,t),this._isBuffering?this.children._add(e):(this._updateIndices(e,!0),this.children.add(e)),$(e),this._attachView(e,t),this.triggerMethod("add:child",this,e),e},_updateIndices:function(e,i){if(this.sort)if(i){var n=t.isArray(e)?t.max(e,"_index"):e;t.isObject(n)&&t.each(this.children._views,function(e){e._index>=n._index&&(e._index+=1)})}else t.each(t.sortBy(this.children._views,"_index"),function(e,t){e._index=t})},_attachView:function(e,t){var i=!e._isAttached&&!this._isBuffering&&this._isAttached&&!1!==this.monitorViewEvents;i&&r(e,"before:attach",e),this.attachHtml(this,e,t),i&&(e._isAttached=!0,r(e,"attach",e))},buildChildView:function(e,i,n){return new i(t.extend({model:e},n))},removeChildView:function(e){return!e||e._isDestroyed?e:(this._removeChildView(e),this.children._updateLength(),this._updateIndices(e,!1),e)},isEmpty:function(e){var i=void 0;return t.result(e,"processedModels")?i=e.processedModels:(i=this.collection?this.collection.models:[],i=this._filterModels(i)),0===i.length},attachBuffer:function(e,t){this.Dom.appendContents(e.el,t,{_$el:e.$el})},_createBuffer:function(){var e=this,i=this.Dom.createBuffer();return t.each(this._bufferedChildren,function(t){e.Dom.appendContents(i,t.el,{_$contents:t.$el})}),i},attachHtml:function(e,t,i){e._isBuffering?e._bufferedChildren.splice(i,0,t):e._insertBefore(t,i)||e._insertAfter(t)},_insertBefore:function(e,i){var n=void 0;return this.sort&&i<this.children.length-1&&(n=t.find(this.children._views,function(e){return e._index===i+1})),!!n&&(this.beforeEl(n.el,e.el),!0)},beforeEl:function(e,t){this.$(e).before(t)},_insertAfter:function(e){this.Dom.appendContents(this.el,e.el,{_$el:this.$el,_$contents:e.$el})},_initChildViewStorage:function(){this.children=new Ve},_removeChildren:function(){this._destroyChildren()},_destroyChildren:function(e){this.children.length&&(this.triggerMethod("before:destroy:children",this),t.each(this.children._views,t.bind(this._removeChildView,this)),this.children._updateLength(),this.triggerMethod("destroy:children",this))},_shouldAddChild:function(e,i){var n=this.filter;return!t.isFunction(n)||n.call(this,e,i,this.collection)}},{setDomApi:I});t.extend(be.prototype,ue);var Me=function(){this._init()};Ce(Me.prototype,"_views"),t.extend(Me.prototype,{_init:function(){this._views=[],this._viewsByCid={},this._indexByModel={},this._updateLength()},_add:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this._views.length,i=e.cid;this._viewsByCid[i]=e,e.model&&(this._indexByModel[e.model.cid]=i),this._views.splice(t,0,e),this._updateLength()},_sort:function(e,i){return"string"==typeof e?(e=t.partial(F,e),this._sortBy(e)):1===e.length?this._sortBy(t.bind(e,i)):this._views.sort(t.bind(e,i))},_sortBy:function(e){var i=t.sortBy(this._views,e);return this._set(i),i},_set:function(e){this._views.length=0,this._views.push.apply(this._views,e.slice(0)),this._updateLength()},_swap:function(e,t){var i=this.findIndexByView(e),n=this.findIndexByView(t);if(-1!==i&&-1!==n){var s=this._views[i];this._views[i]=this._views[n],this._views[n]=s}},findByModel:function(e){return this.findByModelCid(e.cid)},findByModelCid:function(e){var t=this._indexByModel[e];return this.findByCid(t)},findByIndex:function(e){return this._views[e]},findIndexByView:function(e){return this._views.indexOf(e)},findByCid:function(e){return this._viewsByCid[e]},hasView:function(e){return!!this.findByCid(e.cid)},_remove:function(e){if(this._viewsByCid[e.cid]){e.model&&delete this._indexByModel[e.model.cid],delete this._viewsByCid[e.cid];var t=this.findIndexByView(e);this._views.splice(t,1),this._updateLength()}},_updateLength:function(){this.length=this._views.length}});var Re=["behaviors","childView","childViewEventPrefix","childViewEvents","childViewOptions","childViewTriggers","collectionEvents","emptyView","emptyViewOptions","events","modelEvents","sortWithCollection","triggers","ui","viewComparator","viewFilter"],Be=e.View.extend({sortWithCollection:!0,constructor:function(t){this._setOptions(t),this.mergeOptions(t,Re),w(this),this.once("render",this._initialEvents),this._initChildViewStorage(),this._initBehaviors();var i=Array.prototype.slice.call(arguments);i[0]=this.options,e.View.prototype.constructor.apply(this,i),this.getEmptyRegion(),this.delegateEntityEvents(),this._triggerEventOnBehaviors("initialize",this)},_initChildViewStorage:function(){this.children=new Me},getEmptyRegion:function(){return this._emptyRegion&&!this._emptyRegion.isDestroyed()?this._emptyRegion:(this._emptyRegion=new _e({el:this.el,replaceElement:!1}),this._emptyRegion._parentView=this,this._emptyRegion)},_initialEvents:function(){this.listenTo(this.collection,{sort:this._onCollectionSort,reset:this._onCollectionReset,update:this._onCollectionUpdate})},_onCollectionSort:function(e,t){var i=t.add,n=t.merge,s=t.remove;this.sortWithCollection&&!1!==this.viewComparator&&(i||s||n||this.sort())},_onCollectionReset:function(){this.render()},_onCollectionUpdate:function(e,t){var i=t.changes,n=i.removed.length&&this._removeChildModels(i.removed);this._addedViews=i.added.length&&this._addChildModels(i.added),this._detachChildren(n),this._showChildren(),this._removeChildViews(n)},_removeChildModels:function(e){var i=this;return t.reduce(e,function(e,t){var n=i._removeChildModel(t);return n&&e.push(n),e},[])},_removeChildModel:function(e){var t=this.children.findByModel(e);return t&&this._removeChild(t),t},_removeChild:function(e){this.triggerMethod("before:remove:child",this,e),this.children._remove(e),this.triggerMethod("remove:child",this,e)},_addChildModels:function(e){return t.map(e,t.bind(this._addChildModel,this))},_addChildModel:function(e){var t=this._createChildView(e);return this._addChild(t),t},_createChildView:function(e){var t=this._getChildView(e),i=this._getChildViewOptions(e);return this.buildChildView(e,t,i)},_addChild:function(e,t){this.triggerMethod("before:add:child",this,e),this._setupChildView(e),this.children._add(e,t),this.triggerMethod("add:child",this,e)},_getChildView:function(e){var t=this.childView;if(!t)throw new Y({name:"NoChildViewError",message:'A "childView" must be specified'});if(!(t=this._getView(t,e)))throw new Y({name:"InvalidChildViewError",message:'"childView" must be a view class or a function that returns a view class'});return t},_getView:function(i,n){return i.prototype instanceof e.View||i===e.View?i:t.isFunction(i)?i.call(this,n):void 0},_getChildViewOptions:function(e){return t.isFunction(this.childViewOptions)?this.childViewOptions(e):this.childViewOptions},buildChildView:function(e,i,n){return new i(t.extend({model:e},n))},_setupChildView:function(e){w(e),e.on("destroy",this.removeChildView,this),this._proxyChildViewEvents(e)},_getImmediateChildren:function(){return this.children._views},setElement:function(){return e.View.prototype.setElement.apply(this,arguments),this._isAttached=k(this.el),this},render:function(){return this._isDestroyed?this:(this.triggerMethod("before:render",this),this._destroyChildren(),this.children._init(),this.collection&&this._addChildModels(this.collection.models),this._showChildren(),this._isRendered=!0,this.triggerMethod("render",this),this)},sort:function(){return this._isDestroyed?this:this.children.length?(this._showChildren(),this):this},_showChildren:function(){this.isEmpty()?this._showEmptyView():(this._sortChildren(),this.filter())},isEmpty:function(e){return e||!this.children.length},_showEmptyView:function(){var e=this._getEmptyView();if(e){var t=this._getEmptyViewOptions();this.getEmptyRegion().show(new e(t))}},_getEmptyView:function(){var e=this.emptyView;if(e)return this._getView(e)},_destroyEmptyView:function(){var e=this.getEmptyRegion();e.hasView()&&e.empty()},_getEmptyViewOptions:function(){var e=this.emptyViewOptions||this.childViewOptions;return t.isFunction(e)?e.call(this):e},_sortChildren:function(){var e=this.getComparator();e&&(delete this._addedViews,this.triggerMethod("before:sort",this),this.children._sort(e,this),this.triggerMethod("sort",this))},setComparator:function(e){var t=(arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}).preventRender,i=this.viewComparator!==e&&!t;return this.viewComparator=e,i&&this.sort(),this},removeComparator:function(e){return this.setComparator(null,e)},getComparator:function(){return this.viewComparator?this.viewComparator:!(!this.sortWithCollection||!1===this.viewComparator||!this.collection)&&this._viewComparator},_viewComparator:function(e){return this.collection.indexOf(e.model)},filter:function(){if(this._isDestroyed)return this;if(!this.children.length)return this;var e=this._filterChildren();return this._renderChildren(e),this},_filterChildren:function(){var e=this,i=this._getFilter(),n=this._addedViews;if(delete this._addedViews,!i)return n||this.children._views;this.triggerMethod("before:filter",this);var s=[],r=[];return t.each(this.children._views,function(t,n,o){(i.call(e,t,n,o)?s:r).push(t)}),this._detachChildren(r),this.triggerMethod("filter",this,s,r),s},_getFilter:function(){var e=this.getFilter();if(!e)return!1;if(t.isFunction(e))return e;if(t.isObject(e)){var i=t.matches(e);return function(e){return i(e.model&&e.model.attributes)}}if(t.isString(e))return function(t){return t.model&&t.model.get(e)};throw new Y({name:"InvalidViewFilterError",message:'"viewFilter" must be a function, predicate object literal, a string indicating a model attribute, or falsy'})},getFilter:function(){return this.viewFilter},setFilter:function(e){var t=(arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}).preventRender,i=this.viewFilter!==e&&!t;return this.viewFilter=e,i&&this.filter(),this},removeFilter:function(e){return this.setFilter(null,e)},_detachChildren:function(e){t.each(e,t.bind(this._detachChildView,this))},_detachChildView:function(e){var t=e._isAttached&&!1!==this.monitorViewEvents;t&&r(e,"before:detach",e),this.detachHtml(e),t&&(e._isAttached=!1,r(e,"detach",e))},detachHtml:function(e){this.Dom.detachEl(e.el,e.$el)},_renderChildren:function(e){if(this.isEmpty(!e.length))this._showEmptyView();else{this._destroyEmptyView(),this.triggerMethod("before:render:children",this,e);var t=this._getBuffer(e);this._attachChildren(t,e),this.triggerMethod("render:children",this,e)}},_attachChildren:function(e,i){i=this._isAttached&&!1!==this.monitorViewEvents?i:[],t.each(i,function(e){e._isAttached||r(e,"before:attach",e)}),this.attachHtml(e),t.each(i,function(e){e._isAttached||(e._isAttached=!0,r(e,"attach",e))})},_getBuffer:function(e){var i=this,n=this.Dom.createBuffer();return t.each(e,function(e){$(e),i.Dom.appendContents(n,e.el,{_$contents:e.$el})}),n},attachHtml:function(e){this.Dom.appendContents(this.el,e,{_$el:this.$el})},swapChildViews:function(e,t){if(!this.children.hasView(e)||!this.children.hasView(t))throw new Y({name:"ChildSwapError",message:"Both views must be children of the collection view"});return this.children._swap(e,t),this.Dom.swapEl(e.el,t.el),this.Dom.hasEl(this.el,e.el)!==this.Dom.hasEl(this.el,t.el)&&this.filter(),this},addChildView:function(e,t){return!e||e._isDestroyed?e:((!t||t>=this.children.length)&&(this._addedViews=[e]),this._addChild(e,t),this._showChildren(),e)},detachChildView:function(e){return this.removeChildView(e,{shouldDetach:!0}),e},removeChildView:function(e,t){return e?(this._removeChildView(e,t),this._removeChild(e),this.isEmpty()&&this._showEmptyView(),e):e},_removeChildViews:function(e){t.each(e,t.bind(this._removeChildView,this))},_removeChildView:function(e){var t=(arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}).shouldDetach;e.off("destroy",this.removeChildView,this),t?this._detachChildView(e):this._destroyChildView(e),this.stopListening(e)},_destroyChildView:function(e){e._isDestroyed||(e._shouldDisableEvents=!1===this.monitorViewEvents,T(e))},_removeChildren:function(){this._destroyChildren(),this.getEmptyRegion().destroy(),delete this._addedViews},_destroyChildren:function(){this.children&&this.children.length&&(this.triggerMethod("before:destroy:children",this),!1===this.monitorViewEvents&&this.Dom.detachContents(this.el,this.$el),t.each(this.children._views,t.bind(this._removeChildView,this)),this.triggerMethod("destroy:children",this))}},{setDomApi:I});t.extend(Be.prototype,ue);var xe=["childViewContainer","template","templateContext"],De=be.extend({constructor:function(e){z("CompositeView is deprecated. Convert to View at your earliest convenience"),this.mergeOptions(e,xe),be.prototype.constructor.apply(this,arguments)},_initialEvents:function(){this.collection&&(this.listenTo(this.collection,"add",this._onCollectionAdd),this.listenTo(this.collection,"update",this._onCollectionUpdate),this.listenTo(this.collection,"reset",this.renderChildren),this.sort&&this.listenTo(this.collection,"sort",this._sortViews))},_getChildView:function(e){var t=this.childView;if(!t)return this.constructor;if(!(t=this._getView(t,e)))throw new Y({name:"InvalidChildViewError",message:'"childView" must be a view class or a function that returns a view class'});return t},serializeData:function(){return this.serializeModel()},render:function(){return this._isDestroyed?this:(this._isRendering=!0,this.resetChildViewContainer(),this.triggerMethod("before:render",this),this._renderTemplate(),this.bindUIElements(),this.renderChildren(),this._isRendering=!1,this._isRendered=!0,this.triggerMethod("render",this),this)},renderChildren:function(){(this._isRendered||this._isRendering)&&be.prototype._renderChildren.call(this)},attachBuffer:function(e,t){var i=this.getChildViewContainer(e);this.Dom.appendContents(i[0],t,{_$el:i})},_insertAfter:function(e){var t=this.getChildViewContainer(this,e);this.Dom.appendContents(t[0],e.el,{_$el:t,_$contents:e.$el})},_appendReorderedChildren:function(e){var t=this.getChildViewContainer(this);this.Dom.appendContents(t[0],e,{_$el:t})},getChildViewContainer:function(e,i){if(e.$childViewContainer)return e.$childViewContainer;var n=void 0;if(e.childViewContainer){var s=t.result(e,"childViewContainer");if((n="@"===s.charAt(0)&&e.ui?e.ui[s.substr(4)]:this.$(s)).length<=0)throw new Y({name:"ChildViewContainerMissingError",message:'The specified "childViewContainer" was not found: '+e.childViewContainer})}else n=e.$el;return e.$childViewContainer=n,n},resetChildViewContainer:function(){this.$childViewContainer&&(this.$childViewContainer=void 0)}}),Ae=t.pick(we.prototype,"serializeModel","getTemplate","_renderTemplate","_renderHtml","mixinTemplateContext","attachElContent");t.extend(De.prototype,Ae);var Oe=["collectionEvents","events","modelEvents","triggers","ui"],Ie=Q.extend({cidPrefix:"mnb",constructor:function(e,i){this.view=i,this.defaults&&z("Behavior defaults are deprecated. For similar functionality set options on the Behavior class."),this.defaults=t.clone(t.result(this,"defaults",{})),this._setOptions(t.extend({},this.defaults,e)),this.mergeOptions(this.options,Oe),this.ui=t.extend({},t.result(this,"ui"),t.result(i,"ui")),Q.apply(this,arguments)},$:function(){return this.view.$.apply(this.view,arguments)},destroy:function(){return this.stopListening(),this.view._removeBehavior(this),this},proxyViewProperties:function(){return this.$el=this.view.$el,this.el=this.view.el,this},bindUIElements:function(){return this._bindUIElements(),this},unbindUIElements:function(){return this._unbindUIElements(),this},getUI:function(e){return this._getUI(e)},delegateEntityEvents:function(){return this._delegateEntityEvents(this.view.model,this.view.collection),this},undelegateEntityEvents:function(){return this._undelegateEntityEvents(this.view.model,this.view.collection),this},getEvents:function(){var e=this,i=this.normalizeUIKeys(t.result(this,"events"));return t.reduce(i,function(i,n,s){return t.isFunction(n)||(n=e[n]),n?(s=se(s,e.cid),i[s]=t.bind(n,e),i):i},{})},getTriggers:function(){if(this.triggers){var e=this.normalizeUIKeys(t.result(this,"triggers"));return this._getViewTriggers(this.view,e)}}});t.extend(Ie.prototype,ie,oe,ae);var $e=["region","regionClass"],Te=Q.extend({cidPrefix:"mna",constructor:function(e){this._setOptions(e),this.mergeOptions(e,$e),this._initRegion(),Q.prototype.constructor.apply(this,arguments)},regionClass:_e,_initRegion:function(){var e=this.region;if(e){var t={regionClass:this.regionClass};this._region=pe(e,t)}},getRegion:function(){return this._region},showView:function(e){for(var t=this.getRegion(),i=arguments.length,n=Array(i>1?i-1:0),s=1;s<i;s++)n[s-1]=arguments[s];return t.show.apply(t,[e].concat(n))},getView:function(){return this.getRegion().currentView},start:function(e){return this.triggerMethod("before:start",this,e),this.triggerMethod("start",this,e),this}}),Ue=["appRoutes","controller"],Se=e.Router.extend({constructor:function(t){this._setOptions(t),this.mergeOptions(t,Ue),e.Router.apply(this,arguments);var i=this.appRoutes,n=this._getController();this.processAppRoutes(n,i),this.on("route",this._processOnRoute,this)},appRoute:function(e,t){var i=this._getController();return this._addAppRoute(i,e,t),this},_processOnRoute:function(e,i){if(t.isFunction(this.onRoute)){var n=t.invert(this.appRoutes)[e];this.onRoute(e,n,i)}},processAppRoutes:function(e,i){var n=this;if(!i)return this;var s=t.keys(i).reverse();return t.each(s,function(t){n._addAppRoute(e,t,i[t])}),this},_getController:function(){return this.controller},_addAppRoute:function(e,i,n){var s=e[n];if(!s)throw new Y('Method "'+n+'" was not found on the controller');this.route(i,n,t.bind(s,e))},triggerMethod:s});t.extend(Se.prototype,Z);var Fe=e.Marionette,Le=e.Marionette={};return Le.noConflict=function(){return e.Marionette=Fe,this},Le.bindEvents=L(V),Le.unbindEvents=L(E),Le.bindRequests=L(M),Le.unbindRequests=L(R),Le.mergeOptions=L(j),Le.getOption=L(N),Le.normalizeMethods=L(H),Le.extend=P,Le.isNodeAttached=k,Le.deprecate=z,Le.triggerMethod=L(s),Le.triggerMethodOn=r,Le.isEnabled=D,Le.setEnabled=function(e,t){return re[e]=t},Le.monitorViewEvents=w,Le.Behaviors={},Le.Behaviors.behaviorsLookup=function(){throw new Y({message:"You must define where your behaviors are stored.",url:"marionette.behaviors.md#behaviorslookup"})},Le.Application=Te,Le.AppRouter=Se,Le.Renderer=ve,Le.TemplateCache=X,Le.View=we,Le.CollectionView=be,Le.NextCollectionView=Be,Le.CompositeView=De,Le.Behavior=Ie,Le.Region=_e,Le.Error=Y,Le.Object=Q,Le.DEV_MODE=!1,Le.FEATURES=re,Le.VERSION="3.5.1",Le.DomApi=ce,Le.setDomApi=function(e){be.setDomApi(e),De.setDomApi(e),Be.setDomApi(e),_e.setDomApi(e),we.setDomApi(e)},Le}),this&&this.Marionette&&(this.Mn=this.Marionette);
 //# sourceMappingURL=backbone.marionette.min.js.map
\ No newline at end of file
diff --git a/lib/backbone.marionette.min.js.map b/lib/backbone.marionette.min.js.map
index 5127e111da..7ae393b001 100644
--- a/lib/backbone.marionette.min.js.map
+++ b/lib/backbone.marionette.min.js.map
@@ -1 +1 @@
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Trigger Method\n// --------------\n\nimport _ from 'underscore';\nimport getOption from './get-option';\n\n// split the event name on the \":\"\nconst splitter = /(^|:)(\\w)/gi;\n\n// take the event section (\"section1:section2:section3\")\n// and turn it in to uppercase name onSection1Section2Section3\nfunction getEventName(match, prefix, eventName) {\n  return eventName.toUpperCase();\n}\n\nconst getOnMethodName = _.memoize(function(event) {\n  return 'on' + event.replace(splitter, getEventName);\n});\n\n// Trigger an event and/or a corresponding method name. Examples:\n//\n// `this.triggerMethod(\"foo\")` will trigger the \"foo\" event and\n// call the \"onFoo\" method.\n//\n// `this.triggerMethod(\"foo:bar\")` will trigger the \"foo:bar\" event and\n// call the \"onFooBar\" method.\nexport function triggerMethod(event, ...args) {\n  // get the method name from the event name\n  const methodName = getOnMethodName(event);\n  const method = getOption.call(this, methodName);\n  let result;\n\n  // call the onMethodName if it exists\n  if (_.isFunction(method)) {\n    // pass all args, except the event name\n    result = method.apply(this, args);\n  }\n\n  // trigger the event\n  this.trigger.apply(this, arguments);\n\n  return result;\n}\n\n// triggerMethodOn invokes triggerMethod on a specific context\n//\n// e.g. `Marionette.triggerMethodOn(view, 'show')`\n// will trigger a \"show\" event or invoke onShow the view.\nexport function triggerMethodOn(context, ...args) {\n  if (_.isFunction(context.triggerMethod)) {\n    return context.triggerMethod.apply(context, args);\n  }\n\n  return triggerMethod.apply(context, args);\n}\n","// DOM Refresh\n// -----------\n\nimport _ from 'underscore';\nimport { triggerMethodOn } from './trigger-method';\n\n// Trigger method on children unless a pure Backbone.View\nfunction triggerMethodChildren(view, event, shouldTrigger) {\n  if (!view._getImmediateChildren) { return; }\n  _.each(view._getImmediateChildren(), child => {\n    if (!shouldTrigger(child)) { return; }\n    triggerMethodOn(child, event, child);\n  });\n}\n\nfunction shouldTriggerAttach(view) {\n  return !view._isAttached;\n}\n\nfunction shouldAttach(view) {\n  if (!shouldTriggerAttach(view)) { return false; }\n  view._isAttached = true;\n  return true;\n}\n\nfunction shouldTriggerDetach(view) {\n  return view._isAttached;\n}\n\nfunction shouldDetach(view) {\n  if (!shouldTriggerDetach(view)) { return false; }\n  view._isAttached = false;\n  return true;\n}\n\nfunction triggerDOMRefresh(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:refresh', view);\n  }\n}\n\nfunction triggerDOMRemove(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:remove', view);\n  }\n}\n\nfunction handleBeforeAttach() {\n  triggerMethodChildren(this, 'before:attach', shouldTriggerAttach);\n}\n\nfunction handleAttach() {\n  triggerMethodChildren(this, 'attach', shouldAttach);\n  triggerDOMRefresh(this);\n}\n\nfunction handleBeforeDetach() {\n  triggerMethodChildren(this, 'before:detach', shouldTriggerDetach);\n  triggerDOMRemove(this);\n}\n\nfunction handleDetach() {\n  triggerMethodChildren(this, 'detach', shouldDetach);\n}\n\nfunction handleBeforeRender() {\n  triggerDOMRemove(this);\n}\n\nfunction handleRender() {\n  triggerDOMRefresh(this);\n}\n\n// Monitor a view's state, propagating attach/detach events to children and firing dom:refresh\n// whenever a rendered view is attached or an attached view is rendered.\nfunction monitorViewEvents(view) {\n  if (view._areViewEventsMonitored || view.monitorViewEvents === false) { return; }\n\n  view._areViewEventsMonitored = true;\n\n  view.on({\n    'before:attach': handleBeforeAttach,\n    'attach': handleAttach,\n    'before:detach': handleBeforeDetach,\n    'detach': handleDetach,\n    'before:render': handleBeforeRender,\n    'render': handleRender\n  });\n}\n\nexport default monitorViewEvents;\n","// Bind Entity Events & Unbind Entity Events\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone \"entity\" (e.g. collection/model)\n// to methods on a target object.\n//\n// The first parameter, `target`, must have the Backbone.Events module mixed in.\n//\n// The second parameter is the `entity` (Backbone.Model, Backbone.Collection or\n// any object that has Backbone.Events mixed in) to bind the events from.\n//\n// The third parameter is a hash of { \"event:name\": \"eventHandler\" }\n// configuration. Multiple handlers can be separated by a space. A\n// function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\n\n// Bind/unbind the event to handlers specified as a string of\n// handler names on the target object\nfunction bindFromStrings(target, entity, evt, methods, actionName) {\n  const methodNames = methods.split(/\\s+/);\n\n  if (methodNames.length > 1) {\n    deprecate('Multiple handlers for a single event are deprecated. If needed, use a single handler to call multiple methods.')\n  }\n\n  _.each(methodNames, function(methodName) {\n    const method = target[methodName];\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was configured as an event handler, but does not exist.`);\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\n// generic looping function\nfunction iterateEvents(target, entity, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindevents'\n    });\n  }\n\n  // iterate the bindings and bind/unbind them\n  _.each(bindings, function(method, evt) {\n\n    // allow for a list of method names as a string\n    if (_.isString(method)) {\n      bindFromStrings(target, entity, evt, method, actionName);\n      return;\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\nfunction bindEvents(entity, bindings) {\n  if (!entity || !bindings) { return this; }\n\n  iterateEvents(this, entity, bindings, 'listenTo');\n  return this;\n}\n\nfunction unbindEvents(entity, bindings) {\n  if (!entity) { return this; }\n\n  if (!bindings) {\n    this.stopListening(entity);\n    return this;\n  }\n\n  iterateEvents(this, entity, bindings, 'stopListening');\n  return this;\n}\n\n// Export Public API\nexport {\n  bindEvents,\n  unbindEvents\n};\n","// Bind/Unbind Radio Requests\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone.radio request\n// to methods on a target object.\n//\n// The first parameter, `target`, will set the context of the reply method\n//\n// The second parameter is the `Radio.channel` to bind the reply to.\n//\n// The third parameter is a hash of { \"request:name\": \"replyHandler\" }\n// configuration. A function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport normalizeMethods from './normalize-methods';\nimport MarionetteError from '../error';\n\nfunction iterateReplies(target, channel, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindrequests'\n    });\n  }\n\n  const normalizedRadioRequests = normalizeMethods.call(target, bindings);\n\n  channel[actionName](normalizedRadioRequests, target);\n}\n\nfunction bindRequests(channel, bindings) {\n  if (!channel || !bindings) { return this; }\n\n  iterateReplies(this, channel, bindings, 'reply');\n  return this;\n}\n\nfunction unbindRequests(channel, bindings) {\n  if (!channel) { return this; }\n\n  if (!bindings) {\n    channel.stopReplying(null, null, this);\n    return this;\n  }\n\n  iterateReplies(this, channel, bindings, 'stopReplying');\n  return this;\n}\n\nexport {\n  bindRequests,\n  unbindRequests\n};\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport { triggerMethod } from '../common/trigger-method';\nimport Marionette from '../backbone.marionette';\n\n// MixinOptions\n// - behaviors\n\n// Takes care of getting the behavior class\n// given options and a key.\n// If a user passes in options.behaviorClass\n// default to using that.\n// If a user passes in a Behavior Class directly, use that\n// Otherwise delegate the lookup to the users `behaviorsLookup` implementation.\nfunction getBehaviorClass(options, key) {\n  if (options.behaviorClass) {\n    return options.behaviorClass;\n    //treat functions as a Behavior constructor\n  } else if (_.isFunction(options)) {\n    return options;\n  }\n\n  // behaviorsLookup can be either a flat object or a method\n  if (_.isFunction(Marionette.Behaviors.behaviorsLookup)) {\n    return Marionette.Behaviors.behaviorsLookup(options, key)[key];\n  }\n\n  return Marionette.Behaviors.behaviorsLookup[key];\n}\n\n// Iterate over the behaviors object, for each behavior\n// instantiate it and get its grouped behaviors.\n// This accepts a list of behaviors in either an object or array form\nfunction parseBehaviors(view, behaviors) {\n  return _.chain(behaviors).map(function(options, key) {\n    const BehaviorClass = getBehaviorClass(options, key);\n    //if we're passed a class directly instead of an object\n    const _options = options === BehaviorClass ? {} : options;\n    const behavior = new BehaviorClass(_options, view);\n    const nestedBehaviors = parseBehaviors(view, _.result(behavior, 'behaviors'));\n\n    return [behavior].concat(nestedBehaviors);\n  }).flatten().value();\n}\n\nexport default {\n  _initBehaviors() {\n    this._behaviors = this._getBehaviors();\n  },\n\n  _getBehaviors() {\n    const behaviors = _.result(this, 'behaviors');\n\n    // Behaviors defined on a view can be a flat object literal\n    // or it can be a function that returns an object.\n    return _.isObject(behaviors) ? parseBehaviors(this, behaviors) : {};\n  },\n\n  _getBehaviorTriggers() {\n    const triggers = _invoke(this._behaviors, 'getTriggers');\n    return _.reduce(triggers, function(memo, _triggers) {\n      return _.extend(memo, _triggers);\n    }, {});\n  },\n\n  _getBehaviorEvents() {\n    const events = _invoke(this._behaviors, 'getEvents');\n    return _.reduce(events, function(memo, _events) {\n      return _.extend(memo, _events);\n    }, {});\n  },\n\n  // proxy behavior $el to the view's $el.\n  _proxyBehaviorViewProperties() {\n    _invoke(this._behaviors, 'proxyViewProperties');\n  },\n\n  // delegate modelEvents and collectionEvents\n  _delegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'delegateEntityEvents');\n  },\n\n  // undelegate modelEvents and collectionEvents\n  _undelegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'undelegateEntityEvents');\n  },\n\n  _destroyBehaviors(...args) {\n    // Call destroy on each behavior after\n    // destroying the view.\n    // This unbinds event listeners\n    // that behaviors have registered for.\n    _invoke(this._behaviors, 'destroy', ...args);\n  },\n\n  // Remove a behavior\n  _removeBehavior(behavior) {\n    // Don't worry about the clean up if the view is destroyed\n    if (this._isDestroyed) { return; }\n\n    // Remove behavior-only triggers and events\n    this.undelegate(`.trig${ behavior.cid } .${ behavior.cid }`);\n\n    this._behaviors = _.without(this._behaviors, behavior);\n  },\n\n  _bindBehaviorUIElements() {\n    _invoke(this._behaviors, 'bindUIElements');\n  },\n\n  _unbindBehaviorUIElements() {\n    _invoke(this._behaviors, 'unbindUIElements');\n  },\n\n  _triggerEventOnBehaviors() {\n    const behaviors = this._behaviors;\n    // Use good ol' for as this is a very hot function\n    for (let i = 0, length = behaviors && behaviors.length; i < length; i++) {\n      triggerMethod.apply(behaviors[i], arguments);\n    }\n  }\n};\n","// Add Feature flags here\n// e.g. 'class' => false\nconst FEATURES = {\n  childViewEventPrefix: true,\n  triggersStopPropagation: true,\n  triggersPreventDefault: true\n};\n\nfunction isEnabled(name) {\n  return !!FEATURES[name];\n}\n\nfunction setEnabled(name, state) {\n  return FEATURES[name] = state;\n}\n\nexport {\n  FEATURES,\n  setEnabled,\n  isEnabled\n};\n","import _ from 'underscore';\nimport getNamespacedEventName from '../utils/get-namespaced-event-name';\nimport { isEnabled } from '../config/features';\n\n// Internal method to create an event handler for a given `triggerDef` like\n// 'click:foo'\nfunction buildViewTrigger(view, triggerDef) {\n  if (_.isString(triggerDef)) {\n    triggerDef = {event: triggerDef};\n  }\n\n  const eventName = triggerDef.event;\n\n  let shouldPreventDefault = !!triggerDef.preventDefault;\n\n  if (isEnabled('triggersPreventDefault')) {\n    shouldPreventDefault = triggerDef.preventDefault !== false;\n  }\n\n  let shouldStopPropagation = !!triggerDef.stopPropagation;\n\n  if (isEnabled('triggersStopPropagation')) {\n    shouldStopPropagation = triggerDef.stopPropagation !== false;\n  }\n\n  return function(event) {\n    if (shouldPreventDefault) {\n      event.preventDefault();\n    }\n\n    if (shouldStopPropagation) {\n      event.stopPropagation();\n    }\n\n    view.triggerMethod(eventName, view, event);\n  };\n}\n\nexport default {\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  _getViewTriggers(view, triggers) {\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return _.reduce(triggers, (events, value, key) => {\n      key = getNamespacedEventName(key, `trig${ this.cid }`);\n      events[key] = buildViewTrigger(view, value);\n      return events;\n    }, {});\n  }\n\n};\n","// DomApi\n//  ---------\nimport _ from 'underscore';\nimport Backbone from 'backbone';\n\n// Performant method for returning the jQuery instance\nfunction getEl(el) {\n  return el instanceof Backbone.$ ? el : Backbone.$(el);\n}\n\n// Static setter\nexport function setDomApi(mixin) {\n  this.prototype.Dom = _.extend({}, this.prototype.Dom, mixin);\n  return this;\n}\n\nexport default {\n\n  // Returns a new HTML DOM node instance\n  createBuffer() {\n    return document.createDocumentFragment();\n  },\n\n  // Lookup the `selector` string\n  // Selector may also be a DOM element\n  // Returns an array-like object of nodes\n  getEl(selector) {\n    return getEl(selector);\n  },\n\n  // Finds the `selector` string with the el\n  // Returns an array-like object of nodes\n  findEl(el, selector, _$el = getEl(el)) {\n    return _$el.find(selector);\n  },\n\n  // Returns true if the el contains the node childEl\n  hasEl(el, childEl) {\n    return el.contains(childEl && childEl.parentNode);\n  },\n\n  // Detach `el` from the DOM without removing listeners\n  detachEl(el, _$el = getEl(el)) {\n    _$el.detach();\n  },\n\n  // Remove `oldEl` from the DOM and put `newEl` in its place\n  replaceEl(newEl, oldEl) {\n    if (newEl === oldEl) {\n      return;\n    }\n\n    const parent = oldEl.parentNode;\n\n    if (!parent) {\n      return;\n    }\n\n    parent.replaceChild(newEl, oldEl);\n  },\n\n  // Swaps the location of `el1` and `el2` in the DOM\n  swapEl(el1, el2) {\n    if (el1 === el2) {\n      return;\n    }\n\n    const parent1 = el1.parentNode;\n    const parent2 = el2.parentNode;\n\n    if (!parent1 || !parent2) {\n      return;\n    }\n\n    const next1 = el1.nextSibling;\n    const next2 = el2.nextSibling;\n\n    parent1.insertBefore(el2, next1);\n    parent2.insertBefore(el1, next2);\n  },\n\n  // Replace the contents of `el` with the HTML string of `html`\n  setContents(el, html, _$el = getEl(el)) {\n    _$el.html(html);\n  },\n\n  // Takes the DOM node `el` and appends the DOM node `contents`\n  // to the end of the element's contents.\n  appendContents(el, contents, {_$el = getEl(el), _$contents = getEl(contents)} = {}) {\n    _$el.append(_$contents);\n  },\n\n  // Does the el have child nodes\n  hasContents(el) {\n    return !!el && el.hasChildNodes();\n  },\n\n  // Remove the inner contents of `el` from the DOM while leaving\n  // `el` itself in the DOM.\n  detachContents(el, _$el = getEl(el)) {\n    _$el.contents().detach();\n  }\n};\n","import { triggerMethodOn } from '../common/trigger-method';\n\nexport function renderView(view) {\n  if (view._isRendered) {\n    return;\n  }\n\n  if (!view.supportsRenderLifecycle) {\n    triggerMethodOn(view, 'before:render', view);\n  }\n\n  view.render();\n\n  if (!view.supportsRenderLifecycle) {\n    view._isRendered = true;\n    triggerMethodOn(view, 'render', view);\n  }\n}\n\nexport function destroyView(view) {\n  if (view.destroy) {\n    view.destroy();\n    return;\n  }\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'before:destroy', view);\n  }\n\n  const shouldTriggerDetach = view._isAttached && !view._shouldDisableEvents;\n\n  if (shouldTriggerDetach) {\n    triggerMethodOn(view, 'before:detach', view);\n  }\n\n  view.remove();\n\n  if (shouldTriggerDetach) {\n    view._isAttached = false;\n    triggerMethodOn(view, 'detach', view);\n  }\n\n  view._isDestroyed = true;\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'destroy', view);\n  }\n}\n","import _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\nimport Region from '../region';\n\n// return the region instance from the definition\nexport default function(definition, defaults) {\n  if (definition instanceof Region) {\n    return definition;\n  }\n\n  return buildRegionFromDefinition(definition, defaults);\n}\n\nfunction buildRegionFromDefinition(definition, defaults) {\n  const opts = _.extend({}, defaults);\n\n  if (_.isString(definition)) {\n    _.extend(opts, { el: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isFunction(definition)) {\n    _.extend(opts, { regionClass: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isObject(definition)) {\n    if (definition.selector) {\n      deprecate('The selector option on a Region definition object is deprecated. Use el to pass a selector string');\n    }\n\n    _.extend(opts, { el: definition.selector }, definition);\n\n    return buildRegionFromObject(opts);\n  }\n\n  throw new MarionetteError({\n    message: 'Improper region configuration type.',\n    url: 'marionette.region.html#region-configuration-types'\n  });\n}\n\nfunction buildRegionFromObject(definition) {\n  const RegionClass = definition.regionClass\n\n  const options = _.omit(definition, 'regionClass');\n\n  return new RegionClass(options);\n}\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function() {\n  this._init();\n};\n\nemulateCollection(Container.prototype, '_views');\n\nfunction stringComparator(comparator, view) {\n  return view.model && view.model.get(comparator);\n}\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  // Initializes an empty container\n  _init() {\n    this._views = [];\n    this._viewsByCid = {};\n    this._indexByModel = {};\n    this._updateLength();\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Additionally it stores\n  // the view by index in the _views array\n  _add(view, index = this._views.length) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._viewsByCid[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // add to end by default\n    this._views.splice(index, 0, view);\n\n    this._updateLength();\n  },\n\n  // Sort (mutate) and return the array of the child views.\n  _sort(comparator, context) {\n    if (typeof comparator === 'string') {\n      comparator = _.partial(stringComparator, comparator);\n      return this._sortBy(comparator);\n    }\n\n    if (comparator.length === 1) {\n      return this._sortBy(_.bind(comparator, context));\n    }\n\n    return this._views.sort(_.bind(comparator, context));\n  },\n\n  // Makes `_.sortBy` mutate the array to match `this._views.sort`\n  _sortBy(comparator) {\n    const sortedViews = _.sortBy(this._views, comparator);\n\n    this._set(sortedViews);\n\n    return sortedViews;\n  },\n\n  // Replace array contents without overwriting the reference.\n  _set(views) {\n    this._views.length = 0;\n\n    this._views.push.apply(this._views, views.slice(0));\n\n    this._updateLength();\n  },\n\n  // Swap views by index\n  _swap(view1, view2) {\n    const view1Index = this.findIndexByView(view1);\n    const view2Index = this.findIndexByView(view2);\n\n    if (view1Index === -1 || view2Index === -1) {\n      return;\n    }\n\n    const swapView = this._views[view1Index];\n    this._views[view1Index] = this._views[view2Index];\n    this._views[view2Index] = swapView;\n  },\n\n  // Find a view by the model that was attached to it.\n  // Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to it.\n  // Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by index.\n  findByIndex(index) {\n    return this._views[index];\n  },\n\n  // Find the index of a view instance\n  findIndexByView(view) {\n    return this._views.indexOf(view);\n  },\n\n  // Retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._viewsByCid[cid];\n  },\n\n  hasView(view) {\n    return !!this.findByCid(view.cid);\n  },\n\n  // Remove a view and clean up index references.\n  _remove(view) {\n    if (!this._viewsByCid[view.cid]) {\n      return;\n    }\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // remove the view from the container\n    delete this._viewsByCid[view.cid];\n\n    const index = this.findIndexByView(view);\n    this._views.splice(index, 1);\n\n    this._updateLength();\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = this._views.length;\n  }\n});\n\nexport default Container;\n","//Internal utility for creating context style global utils\nconst proxy = function(method) {\n  return function(context, ...args) {\n    return method.apply(context, args);\n  };\n};\n\nexport default proxy;\n","// Marionette.extend\n// -----------------\n\nimport Backbone from 'backbone';\n\n// Borrow the Backbone `extend` method so we can use it as needed\nconst extend = Backbone.Model.extend;\n\nexport default extend;\n","/* global console */\n\nimport _ from 'underscore';\n\nimport Marionette from '../backbone.marionette';\n\nconst deprecate = function(message, test) {\n  if (_.isObject(message)) {\n    message = (\n      message.prev + ' is going to be removed in the future. ' +\n      'Please use ' + message.next + ' instead.' +\n      (message.url ? ' See: ' + message.url : '')\n    );\n  }\n\n  if (!Marionette.DEV_MODE) {\n    return;\n  }\n\n  if ((test === undefined || !test) && !deprecate._cache[message]) {\n    deprecate._warn('Deprecation warning: ' + message);\n    deprecate._cache[message] = true;\n  }\n};\n\n/* istanbul ignore next: can't clear console */\ndeprecate._console = typeof console !== 'undefined' ? console : {};\ndeprecate._warn = function() {\n  const warn = deprecate._console.warn || deprecate._console.log || _.noop;\n  return warn.apply(deprecate._console, arguments);\n};\ndeprecate._cache = {};\n\nexport default deprecate;\n","// Marionette.isNodeAttached\n// -------------------------\n\n// Determine if `el` is a child of the document\nconst isNodeAttached = function(el) {\n  return document.documentElement.contains(el && el.parentNode);\n};\n\nexport default isNodeAttached;\n","import _ from 'underscore';\n\n// Merge `keys` from `options` onto `this`\nconst mergeOptions = function(options, keys) {\n  if (!options) { return; }\n\n  _.each(keys, (key) => {\n    const option = options[key];\n    if (option !== undefined) {\n      this[key] = option;\n    }\n  });\n};\n\nexport default mergeOptions;\n","// Marionette.getOption\n// --------------------\n\n// Retrieve an object, function or other value from the\n// object or its `options`, with `options` taking precedence.\nconst getOption = function(optionName) {\n  if (!optionName) { return; }\n  if (this.options && (this.options[optionName] !== undefined)) {\n    return this.options[optionName];\n  } else {\n    return this[optionName];\n  }\n};\n\nexport default getOption;\n","import _ from 'underscore';\n\n// Marionette.normalizeMethods\n// ----------------------\n\n// Pass in a mapping of events => functions or function names\n// and return a mapping of events => functions\nconst normalizeMethods = function(hash) {\n  return _.reduce(hash, (normalizedHash, method, name) => {\n    if (!_.isFunction(method)) {\n      method = this[method];\n    }\n    if (method) {\n      normalizedHash[name] = method;\n    }\n    return normalizedHash;\n  }, {});\n};\n\nexport default normalizeMethods;\n","// Error\n// -----\n\nimport _ from 'underscore';\nimport extend from './utils/extend';\nimport {version} from '../package.json';\n\nconst errorProps = ['description', 'fileName', 'lineNumber', 'name', 'message', 'number'];\n\nconst MarionetteError = extend.call(Error, {\n  urlRoot: `http://marionettejs.com/docs/v${version}/`,\n\n  constructor(message, options) {\n    if (_.isObject(message)) {\n      options = message;\n      message = options.message;\n    } else if (!options) {\n      options = {};\n    }\n\n    const error = Error.call(this, message);\n    _.extend(this, _.pick(error, errorProps), _.pick(options, errorProps));\n\n    this.captureStackTrace();\n\n    if (options.url) {\n      this.url = this.urlRoot + options.url;\n    }\n  },\n\n  captureStackTrace() {\n    if (Error.captureStackTrace) {\n      Error.captureStackTrace(this, MarionetteError);\n    }\n  },\n\n  toString() {\n    return this.name + ': ' + this.message + (this.url ? ' See: ' + this.url : '');\n  }\n});\n\nMarionetteError.extend = extend;\n\nexport default MarionetteError;\n","import _ from 'underscore';\n\n// Internal utility for setting options consistently across Mn\nconst setOptions = function(options) {\n  this.options = _.extend({}, _.result(this, 'options'), options);\n};\n\nexport default setOptions;\n","import _setOptions from '../utils/set-options';\nimport getOption from '../common/get-option';\nimport mergeOptions from '../common/merge-options';\nimport normalizeMethods from '../common/normalize-methods';\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nexport default {\n\n  // Imports the \"normalizeMethods\" to transform hashes of\n  // events=>function references/names to a hash of events=>function references\n  normalizeMethods,\n\n  _setOptions,\n\n  // A handy way to merge passed-in options onto the instance\n  mergeOptions,\n\n  // Enable getting options from this or this.options by name.\n  getOption,\n\n  // Enable binding view's events from another entity.\n  bindEvents,\n\n  // Enable unbinding view's events from another entity.\n  unbindEvents\n};\n","import _ from 'underscore';\nimport Radio from 'backbone.radio';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from '../common/bind-requests';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nimport MarionetteError from '../error';\n\n// MixinOptions\n// - channelName\n// - radioEvents\n// - radioRequests\n\nexport default {\n\n  _initRadio() {\n    const channelName = _.result(this, 'channelName');\n\n    if (!channelName) {\n      return;\n    }\n\n    /* istanbul ignore next */\n    if (!Radio) {\n      throw new MarionetteError({\n        name: 'BackboneRadioMissing',\n        message: 'The dependency \"backbone.radio\" is missing.'\n      });\n    }\n\n    const channel = this._channel = Radio.channel(channelName);\n\n    const radioEvents = _.result(this, 'radioEvents');\n    this.bindEvents(channel, radioEvents);\n\n    const radioRequests = _.result(this, 'radioRequests');\n    this.bindRequests(channel, radioRequests);\n\n    this.on('destroy', this._destroyRadio);\n  },\n\n  _destroyRadio() {\n    this._channel.stopReplying(null, null, this);\n  },\n\n  getChannel() {\n    return this._channel;\n  },\n\n  // Proxy `bindEvents`\n  bindEvents: bindEvents,\n\n  // Proxy `unbindEvents`\n  unbindEvents: unbindEvents,\n\n  // Proxy `bindRequests`\n  bindRequests: bindRequests,\n\n  // Proxy `unbindRequests`\n  unbindRequests: unbindRequests\n\n};\n","// Object\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport extend from './utils/extend';\nimport { triggerMethod } from './common/trigger-method';\nimport CommonMixin from './mixins/common';\nimport RadioMixin from './mixins/radio';\n\nconst ClassOptions = [\n  'channelName',\n  'radioEvents',\n  'radioRequests'\n];\n\n// A Base Class that other Classes should descend from.\n// Object borrows many conventions and utilities from Backbone.\nconst MarionetteObject = function(options) {\n  if (!this.hasOwnProperty('options')) {\n    this._setOptions(options);\n  }\n  this.mergeOptions(options, ClassOptions);\n  this._setCid();\n  this._initRadio();\n  this.initialize.apply(this, arguments);\n};\n\nMarionetteObject.extend = extend;\n\n// Object Methods\n// --------------\n\n// Ensure it can trigger events with Backbone.Events\n_.extend(MarionetteObject.prototype, Backbone.Events, CommonMixin, RadioMixin, {\n  cidPrefix: 'mno',\n\n  // for parity with Marionette.AbstractView lifecyle\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return this._isDestroyed;\n  },\n\n  //this is a noop method intended to be overridden by classes that extend from this base\n  initialize() {},\n\n  _setCid() {\n    if (this.cid) { return; }\n    this.cid = _.uniqueId(this.cidPrefix);\n  },\n\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:destroy', this, ...args);\n\n    this._isDestroyed = true;\n    this.triggerMethod('destroy', this, ...args);\n    this.stopListening();\n\n    return this;\n  },\n\n  triggerMethod\n});\n\nexport default MarionetteObject;\n","// Template Cache\n// --------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport MarionetteError from './error';\n\n// Manage templates stored in `<script>` blocks,\n// caching them for faster access.\nconst TemplateCache = function(templateId) {\n  this.templateId = templateId;\n};\n\n// TemplateCache object-level methods. Manage the template\n// caches from these method calls instead of creating\n// your own TemplateCache instances\n_.extend(TemplateCache, {\n\n  templateCaches: {},\n\n  // Get the specified template by id. Either\n  // retrieves the cached version, or loads it\n  // from the DOM.\n  get(templateId, options) {\n    let cachedTemplate = this.templateCaches[templateId];\n\n    if (!cachedTemplate) {\n      cachedTemplate = new TemplateCache(templateId);\n      this.templateCaches[templateId] = cachedTemplate;\n    }\n\n    return cachedTemplate.load(options);\n  },\n\n  // Clear templates from the cache. If no arguments\n  // are specified, clears all templates:\n  // `clear()`\n  //\n  // If arguments are specified, clears each of the\n  // specified templates from the cache:\n  // `clear(\"#t1\", \"#t2\", \"...\")`\n  clear(...args) {\n    let i;\n    const length = args.length;\n\n    if (length > 0) {\n      for (i = 0; i < length; i++) {\n        delete this.templateCaches[args[i]];\n      }\n    } else {\n      this.templateCaches = {};\n    }\n  }\n});\n\n// TemplateCache instance methods, allowing each\n// template cache object to manage its own state\n// and know whether or not it has been loaded\n_.extend(TemplateCache.prototype, {\n\n  // Internal method to load the template\n  load(options) {\n    // Guard clause to prevent loading this template more than once\n    if (this.compiledTemplate) {\n      return this.compiledTemplate;\n    }\n\n    // Load the template and compile it\n    const template = this.loadTemplate(this.templateId, options);\n    this.compiledTemplate = this.compileTemplate(template, options);\n\n    return this.compiledTemplate;\n  },\n\n  // Load a template from the DOM, by default. Override\n  // this method to provide your own template retrieval\n  // For asynchronous loading with AMD/RequireJS, consider\n  // using a template-loader plugin as described here:\n  // https://github.com/marionettejs/backbone.marionette/wiki/Using-marionette-with-requirejs\n  loadTemplate(templateId, options) {\n    const $template = Backbone.$(templateId);\n\n    if (!$template.length) {\n      throw new MarionetteError({\n        name: 'NoTemplateError',\n        message: `Could not find template: \"${templateId}\"`\n      });\n    }\n    return $template.html();\n  },\n\n  // Pre-compile the template before caching it. Override\n  // this method if you do not need to pre-compile a template\n  // (JST / RequireJS for example) or if you want to change\n  // the template engine used (Handebars, etc).\n  compileTemplate(rawTemplate, options) {\n    return _.template(rawTemplate, options);\n  }\n});\n\nexport default TemplateCache;\n","// Implementation of the invoke method (http://underscorejs.org/#invoke) with support for\n// lodash v3, v4, and underscore.js\nimport _ from 'underscore';\n\nexport default _.invokeMap || _.invoke;\n","import _ from 'underscore';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\n// MixinOptions\n// - collectionEvents\n// - modelEvents\n\nexport default {\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  _delegateEntityEvents(model, collection) {\n    this._undelegateEntityEvents(model, collection);\n\n    const modelEvents = _.result(this, 'modelEvents');\n    bindEvents.call(this, model, modelEvents);\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n    bindEvents.call(this, collection, collectionEvents);\n  },\n\n  _undelegateEntityEvents(model, collection) {\n    const modelEvents = _.result(this, 'modelEvents');\n    unbindEvents.call(this, model, modelEvents);\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n    unbindEvents.call(this, collection, collectionEvents);\n  }\n};\n","// Borrow event splitter from Backbone\nconst delegateEventSplitter = /^(\\S+)\\s*(.*)$/;\n\n// Set event name to be namespaced using a unique index\n// to generate a non colliding event namespace\n// http://api.jquery.com/event.namespace/\nconst getNamespacedEventName = function(eventName, namespace) {\n  const match = eventName.match(delegateEventSplitter);\n  return `${ match[1] }.${ namespace } ${ match[2] }`;\n};\n\nexport default getNamespacedEventName;\n","import _ from 'underscore';\n// allows for the use of the @ui. syntax within\n// a given key for triggers and events\n// swaps the @ui with the associated selector.\n// Returns a new, non-mutated, parsed events hash.\nconst normalizeUIKeys = function(hash, ui) {\n  return _.reduce(hash, (memo, val, key) => {\n    const normalizedKey = normalizeUIString(key, ui);\n    memo[normalizedKey] = val;\n    return memo;\n  }, {});\n};\n\n// utility method for parsing @ui. syntax strings\n// into associated selector\nconst normalizeUIString = function(uiString, ui) {\n  return uiString.replace(/@ui\\.[a-zA-Z-_$0-9]*/g, (r) => {\n    return ui[r.slice(4)];\n  });\n};\n\n// allows for the use of the @ui. syntax within\n// a given value for regions\n// swaps the @ui with the associated selector\nconst normalizeUIValues = function(hash, ui, properties) {\n  _.each(hash, (val, key) => {\n    if (_.isString(val)) {\n      hash[key] = normalizeUIString(val, ui);\n    } else if (_.isObject(val) && _.isArray(properties)) {\n      _.extend(val, normalizeUIValues(_.pick(val, properties), ui));\n      /* Value is an object, and we got an array of embedded property names to normalize. */\n      _.each(properties, (property) => {\n        const propertyVal = val[property];\n        if (_.isString(propertyVal)) {\n          val[property] = normalizeUIString(propertyVal, ui);\n        }\n      });\n    }\n  });\n  return hash;\n};\n\nexport default {\n\n  // normalize the keys of passed hash with the views `ui` selectors.\n  // `{\"@ui.foo\": \"bar\"}`\n  normalizeUIKeys(hash) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIKeys(hash, uiBindings);\n  },\n\n  // normalize the passed string with the views `ui` selectors.\n  // `\"@ui.bar\"`\n  normalizeUIString(uiString) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIString(uiString, uiBindings);\n  },\n\n  // normalize the values of passed hash with the views `ui` selectors.\n  // `{foo: \"@ui.bar\"}`\n  normalizeUIValues(hash, properties) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIValues(hash, uiBindings, properties);\n  },\n\n  _getUIBindings() {\n    const uiBindings = _.result(this, '_uiBindings');\n    const ui = _.result(this, 'ui');\n    return uiBindings || ui;\n  },\n\n  // This method binds the elements specified in the \"ui\" hash inside the view's code with\n  // the associated jQuery selectors.\n  _bindUIElements() {\n    if (!this.ui) { return; }\n\n    // store the ui hash in _uiBindings so they can be reset later\n    // and so re-rendering the view will be able to find the bindings\n    if (!this._uiBindings) {\n      this._uiBindings = this.ui;\n    }\n\n    // get the bindings result, as a function or otherwise\n    const bindings = _.result(this, '_uiBindings');\n\n    // empty the ui so we don't have anything to start with\n    this._ui = {};\n\n    // bind each of the selectors\n    _.each(bindings, (selector, key) => {\n      this._ui[key] = this.$(selector);\n    });\n\n    this.ui = this._ui;\n  },\n\n  _unbindUIElements() {\n    if (!this.ui || !this._uiBindings) { return; }\n\n    // delete all of the existing ui bindings\n    _.each(this.ui, ($el, name) => {\n      delete this.ui[name];\n    });\n\n    // reset the ui element to the original bindings configuration\n    this.ui = this._uiBindings;\n    delete this._uiBindings;\n    delete this._ui;\n  },\n\n  _getUI(name) {\n    return this._ui[name];\n  }\n};\n","// ViewMixin\n//  ---------\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from '../common/trigger-method';\nimport BehaviorsMixin from './behaviors';\nimport CommonMixin from './common';\nimport DelegateEntityEventsMixin from './delegate-entity-events';\nimport TriggersMixin from './triggers';\nimport UIMixin from './ui';\nimport { isEnabled } from '../config/features';\nimport DomApi from '../config/dom';\n\n// MixinOptions\n// - behaviors\n// - childViewEventPrefix\n// - childViewEvents\n// - childViewTriggers\n// - collectionEvents\n// - modelEvents\n// - triggers\n// - ui\n\n\nconst ViewMixin = {\n  Dom: DomApi,\n\n  supportsRenderLifecycle: true,\n  supportsDestroyLifecycle: true,\n\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return !!this._isDestroyed;\n  },\n\n  _isRendered: false,\n\n  isRendered() {\n    return !!this._isRendered;\n  },\n\n  _isAttached: false,\n\n  isAttached() {\n    return !!this._isAttached;\n  },\n\n  // Overriding Backbone.View's `delegateEvents` to handle\n  // `events` and `triggers`\n  delegateEvents(eventsArg) {\n\n    this._proxyBehaviorViewProperties();\n    this._buildEventProxies();\n\n    const viewEvents = this._getEvents(eventsArg);\n\n    if (typeof eventsArg === 'undefined') {\n      this.events = viewEvents;\n    }\n\n    const combinedEvents = _.extend({},\n      this._getBehaviorEvents(),\n      viewEvents,\n      this._getBehaviorTriggers(),\n      this.getTriggers()\n    );\n\n    Backbone.View.prototype.delegateEvents.call(this, combinedEvents);\n\n    return this;\n  },\n\n  _getEvents(eventsArg) {\n    const events = eventsArg || this.events;\n\n    if (_.isFunction(events)) {\n      return this.normalizeUIKeys(events.call(this));\n    }\n\n    return this.normalizeUIKeys(events);\n  },\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Allow `triggers` to be configured as a function\n    const triggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return this._getViewTriggers(this, triggers);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.model, this.collection);\n\n    // bind each behaviors model and collection events\n    this._delegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle unbinding `modelEvents`, and `collectionEvents` configuration\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.model, this.collection);\n\n    // unbind each behaviors model and collection events\n    this._undelegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle destroying the view and its children.\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n    const shouldTriggerDetach = this._isAttached && !this._shouldDisableEvents;\n\n    this.triggerMethod('before:destroy', this, ...args);\n    if (shouldTriggerDetach) {\n      this.triggerMethod('before:detach', this);\n    }\n\n    // unbind UI elements\n    this.unbindUIElements();\n\n    // remove the view from the DOM\n    this._removeElement();\n\n    if (shouldTriggerDetach) {\n      this._isAttached = false;\n      this.triggerMethod('detach', this);\n    }\n\n    // remove children after the remove to prevent extra paints\n    this._removeChildren();\n\n    this._isDestroyed = true;\n    this._isRendered = false;\n\n    // Destroy behaviors after _isDestroyed flag\n    this._destroyBehaviors(...args);\n\n    this.triggerMethod('destroy', this, ...args);\n\n    this.stopListening();\n\n    return this;\n  },\n\n  // Equates to this.$el.remove\n  _removeElement() {\n    this.$el.off().removeData();\n    this.Dom.detachEl(this.el, this.$el);\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n    this._bindBehaviorUIElements();\n\n    return this;\n  },\n\n  // This method unbinds the elements specified in the \"ui\" hash\n  unbindUIElements() {\n    this._unbindUIElements();\n    this._unbindBehaviorUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // used as the prefix for child view events\n  // that are forwarded through the layoutview\n  childViewEventPrefix() {\n    return isEnabled('childViewEventPrefix') ? 'childview' : false;\n  },\n\n  // import the `triggerMethod` to trigger events with corresponding\n  // methods if the method exists\n  triggerMethod() {\n    const ret = triggerMethod.apply(this, arguments);\n\n    this._triggerEventOnBehaviors.apply(this, arguments);\n\n    return ret;\n  },\n\n  // Cache `childViewEvents` and `childViewTriggers`\n  _buildEventProxies() {\n    this._childViewEvents = _.result(this, 'childViewEvents');\n    this._childViewTriggers = _.result(this, 'childViewTriggers');\n  },\n\n  _proxyChildViewEvents(view) {\n    this.listenTo(view, 'all', this._childViewEventHandler);\n  },\n\n  _childViewEventHandler(eventName, ...args) {\n    const childViewEvents = this.normalizeMethods(this._childViewEvents);\n\n    // call collectionView childViewEvent if defined\n    if (typeof childViewEvents !== 'undefined' && _.isFunction(childViewEvents[eventName])) {\n      childViewEvents[eventName].apply(this, args);\n    }\n\n    // use the parent view's proxyEvent handlers\n    const childViewTriggers = this._childViewTriggers;\n\n    // Call the event with the proxy name on the parent layout\n    if (childViewTriggers && _.isString(childViewTriggers[eventName])) {\n      this.triggerMethod(childViewTriggers[eventName], ...args);\n    }\n\n    const prefix = _.result(this, 'childViewEventPrefix');\n\n    if (prefix !== false) {\n      const childEventName = prefix + ':' + eventName;\n\n      this.triggerMethod(childEventName, ...args);\n    }\n  }\n};\n\n_.extend(ViewMixin, BehaviorsMixin, CommonMixin, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default ViewMixin;\n","// Region\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport { renderView, destroyView } from './common/view';\nimport monitorViewEvents from './common/monitor-view-events';\nimport isNodeAttached from './common/is-node-attached';\nimport { triggerMethodOn } from './common/trigger-method';\nimport MarionetteObject from './object';\nimport MarionetteError from './error';\nimport View from './view';\nimport DomApi, { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'allowMissingEl',\n  'parentEl',\n  'replaceElement'\n];\n\nconst Region = MarionetteObject.extend({\n  Dom: DomApi,\n\n  cidPrefix: 'mnr',\n  replaceElement: false,\n  _isReplaced: false,\n  _isSwappingView: false,\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    // getOption necessary because options.el may be passed as undefined\n    this._initEl = this.el = this.getOption('el');\n\n    // Handle when this.el is passed in as a $ wrapped element.\n    this.el = this.el instanceof Backbone.$ ? this.el[0] : this.el;\n\n    if (!this.el) {\n      throw new MarionetteError({\n        name: 'NoElError',\n        message: 'An \"el\" must be specified for a region.'\n      });\n    }\n\n    this.$el = this.getEl(this.el);\n    MarionetteObject.call(this, options);\n  },\n\n  // Displays a backbone view instance inside of the region. Handles calling the `render`\n  // method for you. Reads content directly from the `el` attribute. The `preventDestroy`\n  // option can be used to prevent a view from the old view being destroyed on show.\n  show(view, options) {\n    if (!this._ensureElement(options)) {\n      return;\n    }\n\n    view = this._getView(view, options);\n\n    if (view === this.currentView) { return this; }\n\n    this._isSwappingView = !!this.currentView;\n\n    this.triggerMethod('before:show', this, view, options);\n\n    // Assume an attached view is already in the region for pre-existing DOM\n    if (!view._isAttached) {\n      this.empty(options);\n    }\n\n    this._setupChildView(view);\n\n    this.currentView = view;\n\n    renderView(view);\n\n    this._attachView(view, options);\n\n    this.triggerMethod('show', this, view, options);\n\n    this._isSwappingView = false;\n\n    return this;\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    this._proxyChildViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other than through the region.\n    // If this happens we need to remove the reference to the currentView since once a view\n    // has been destroyed we can not reuse it.\n    view.on('destroy', this._empty, this);\n  },\n\n  _proxyChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    parentView._proxyChildViewEvents(view);\n  },\n\n  // If the regions parent view is not monitoring its attach/detach events\n  _shouldDisableMonitoring() {\n    return this._parentView && this._parentView.monitorViewEvents === false;\n  },\n\n  _attachView(view, options = {}) {\n    const shouldTriggerAttach = !view._isAttached && isNodeAttached(this.el) && !this._shouldDisableMonitoring();\n    const shouldReplaceEl = typeof options.replaceElement === 'undefined' ? !!_.result(this, 'replaceElement') : !!options.replaceElement;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    if (shouldReplaceEl) {\n      this._replaceEl(view);\n    } else {\n      this.attachHtml(view);\n    }\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  _ensureElement(options = {}) {\n    if (!_.isObject(this.el)) {\n      this.$el = this.getEl(this.el);\n      this.el = this.$el[0];\n      // Make sure the $el contains only the el\n      this.$el = this.Dom.getEl(this.el);\n    }\n\n    if (!this.$el || this.$el.length === 0) {\n      const allowMissingEl = typeof options.allowMissingEl === 'undefined' ? !!_.result(this, 'allowMissingEl') : !!options.allowMissingEl;\n\n      if (allowMissingEl) {\n        return false;\n      } else {\n        throw new MarionetteError(`An \"el\" must exist in DOM for this region ${this.cid}`);\n      }\n    }\n    return true;\n  },\n\n  _getView(view) {\n    if (!view) {\n      throw new MarionetteError({\n        name: 'ViewNotValid',\n        message: 'The view passed is undefined and therefore invalid. You must pass a view instance to show.'\n      });\n    }\n\n    if (view._isDestroyed) {\n      throw new MarionetteError({\n        name: 'ViewDestroyedError',\n        message: `View (cid: \"${view.cid}\") has already been destroyed and cannot be used.`\n      });\n    }\n\n    if (view instanceof Backbone.View) {\n      return view;\n    }\n\n    const viewOptions = this._getViewOptions(view);\n\n    return new View(viewOptions);\n  },\n\n  // This allows for a template or a static string to be\n  // used as a template\n  _getViewOptions(viewOptions) {\n    if (_.isFunction(viewOptions)) {\n      return { template: viewOptions };\n    }\n\n    if (_.isObject(viewOptions)) {\n      return viewOptions;\n    }\n\n    const template = function() { return viewOptions; };\n\n    return { template };\n  },\n\n  // Override this method to change how the region finds the DOM element that it manages. Return\n  // a jQuery selector object scoped to a provided parent el or the document if none exists.\n  getEl(el) {\n    const context = _.result(this, 'parentEl');\n\n    if (context && _.isString(el)) {\n      return this.Dom.findEl(context, el);\n    }\n\n    return this.Dom.getEl(el);\n  },\n\n  _replaceEl(view) {\n    // always restore the el to ensure the regions el is present before replacing\n    this._restoreEl();\n\n    view.on('before:destroy', this._restoreEl, this);\n\n    this.Dom.replaceEl(view.el, this.el);\n\n    this._isReplaced = true;\n  },\n\n  // Restore the region's element in the DOM.\n  _restoreEl() {\n    // There is nothing to replace\n    if (!this._isReplaced) {\n      return;\n    }\n\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._detachView(view);\n\n    this._isReplaced = false;\n  },\n\n  // Check to see if the region's el was replaced.\n  isReplaced() {\n    return !!this._isReplaced;\n  },\n\n  // Check to see if a view is being swapped by another\n  isSwappingView() {\n    return !!this._isSwappingView;\n  },\n\n  // Override this method to change how the new view is appended to the `$el` that the\n  // region is managing\n  attachHtml(view) {\n    this.Dom.appendContents(this.el, view.el, {_$el: this.$el, _$contents: view.$el});\n  },\n\n  // Destroy the current view, if there is one. If there is no current view, it does\n  // nothing and returns immediately.\n  empty(options = { allowMissingEl: true }) {\n    const view = this.currentView;\n\n    // If there is no view in the region we should only detach current html\n    if (!view) {\n      if (this._ensureElement(options)) {\n        this.detachHtml();\n      }\n      return this;\n    }\n\n    const shouldDestroy = !options.preventDestroy;\n\n    if (!shouldDestroy) {\n      deprecate('The preventDestroy option is deprecated. Use Region#detachView');\n    }\n\n    this._empty(view, shouldDestroy);\n    return this;\n  },\n\n  _empty(view, shouldDestroy) {\n    view.off('destroy', this._empty, this);\n    this.triggerMethod('before:empty', this, view);\n\n    this._restoreEl();\n\n    delete this.currentView;\n\n    if (!view._isDestroyed) {\n      if (shouldDestroy) {\n        this.removeView(view);\n      } else {\n        this._detachView(view);\n      }\n      this._stopChildViewEvents(view);\n    }\n\n    this.triggerMethod('empty', this, view);\n  },\n\n  _stopChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    this._parentView.stopListening(view);\n  },\n\n  destroyView(view) {\n    if (view._isDestroyed) {\n      return view;\n    }\n\n    view._shouldDisableEvents = this._shouldDisableMonitoring();\n    destroyView(view);\n    return view;\n  },\n\n  removeView(view) {\n    this.destroyView(view);\n  },\n\n  // Empties the Region without destroying the view\n  // Returns the detached view\n  detachView() {\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._empty(view);\n\n    return view;\n  },\n\n  _detachView(view) {\n    const shouldTriggerDetach = view._isAttached && !this._shouldDisableMonitoring();;\n    const shouldRestoreEl = this._isReplaced;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    if (shouldRestoreEl) {\n      this.Dom.replaceEl(this.el, view.el);\n    } else {\n      this.detachHtml();\n    }\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the region detaches current content\n  detachHtml() {\n    this.Dom.detachContents(this.el, this.$el);\n  },\n\n  // Checks whether a view is currently present within the region. Returns `true` if there is\n  // and `false` if no view is present.\n  hasView() {\n    return !!this.currentView;\n  },\n\n  // Reset the region by destroying any existing view and clearing out the cached `$el`.\n  // The next time a view is shown via this region, the region will re-query the DOM for\n  // the region's `el`.\n  reset(options) {\n    this.empty(options);\n\n    if (this.$el) {\n      this.el = this._initEl;\n    }\n\n    delete this.$el;\n    return this;\n  },\n\n  destroy(options) {\n    if (this._isDestroyed) { return this; }\n\n    this.reset(options);\n\n    if (this._name) {\n      this._parentView._removeReferences(this._name);\n    }\n    delete this._parentView;\n    delete this._name;\n\n    return MarionetteObject.prototype.destroy.apply(this, arguments);\n  }\n}, {\n  setDomApi\n});\n\nexport default Region;\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport buildRegion from '../common/build-region';\nimport Region from '../region';\n\n// MixinOptions\n// - regions\n// - regionClass\n\nexport default {\n  regionClass: Region,\n\n  // Internal method to initialize the regions that have been defined in a\n  // `regions` attribute on this View.\n  _initRegions() {\n\n    // init regions hash\n    this.regions = this.regions || {};\n    this._regions = {};\n\n    this.addRegions(_.result(this, 'regions'));\n  },\n\n  // Internal method to re-initialize all of the regions by updating\n  // the `el` that they point to\n  _reInitRegions() {\n    _invoke(this._regions, 'reset');\n  },\n\n  // Add a single region, by name, to the View\n  addRegion(name, definition) {\n    const regions = {};\n    regions[name] = definition;\n    return this.addRegions(regions)[name];\n  },\n\n  // Add multiple regions as a {name: definition, name2: def2} object literal\n  addRegions(regions) {\n    // If there's nothing to add, stop here.\n    if (_.isEmpty(regions)) {\n      return;\n    }\n\n    // Normalize region selectors hash to allow\n    // a user to use the @ui. syntax.\n    regions = this.normalizeUIValues(regions, ['selector', 'el']);\n\n    // Add the regions definitions to the regions property\n    this.regions = _.extend({}, this.regions, regions);\n\n    return this._addRegions(regions);\n  },\n\n  // internal method to build and add regions\n  _addRegions(regionDefinitions) {\n    const defaults = {\n      regionClass: this.regionClass,\n      parentEl: _.partial(_.result, this, 'el')\n    };\n\n    return _.reduce(regionDefinitions, (regions, definition, name) => {\n      regions[name] = buildRegion(definition, defaults);\n      this._addRegion(regions[name], name);\n      return regions;\n    }, {});\n  },\n\n  _addRegion(region, name) {\n    this.triggerMethod('before:add:region', this, name, region);\n\n    region._parentView = this;\n    region._name = name;\n\n    this._regions[name] = region;\n\n    this.triggerMethod('add:region', this, name, region);\n  },\n\n  // Remove a single region from the View, by name\n  removeRegion(name) {\n    const region = this._regions[name];\n\n    this._removeRegion(region, name);\n\n    return region;\n  },\n\n  // Remove all regions from the View\n  removeRegions() {\n    const regions = this._getRegions();\n\n    _.each(this._regions, _.bind(this._removeRegion, this));\n\n    return regions;\n  },\n\n  _removeRegion(region, name) {\n    this.triggerMethod('before:remove:region', this, name, region);\n\n    region.destroy();\n\n    this.triggerMethod('remove:region', this, name, region);\n  },\n\n  // Called in a region's destroy\n  _removeReferences(name) {\n    delete this.regions[name];\n    delete this._regions[name];\n  },\n\n  // Empty all regions in the region manager, but\n  // leave them attached\n  emptyRegions() {\n    const regions = this.getRegions();\n    _invoke(regions, 'empty');\n    return regions;\n  },\n\n  // Checks to see if view contains region\n  // Accepts the region name\n  // hasRegion('main')\n  hasRegion(name) {\n    return !!this.getRegion(name);\n  },\n\n  // Provides access to regions\n  // Accepts the region name\n  // getRegion('main')\n  getRegion(name) {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._regions[name];\n  },\n\n  // Get all regions\n  _getRegions() {\n    return _.clone(this._regions);\n  },\n\n  getRegions() {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._getRegions();\n  },\n\n  showChildView(name, view, ...args) {\n    const region = this.getRegion(name);\n    return region.show(view, ...args);\n  },\n\n  detachChildView(name) {\n    return this.getRegion(name).detachView();\n  },\n\n  getChildView(name) {\n    return this.getRegion(name).currentView;\n  }\n\n};\n","// Renderer\n// --------\n\nimport _ from 'underscore';\nimport MarionetteError from '../error';\nimport TemplateCache from '../template-cache';\n\n// Render a template with data by passing in the template\n// selector and the data to render.\nconst Renderer = {\n\n  // Render a template with data. The `template` parameter is\n  // passed to the `TemplateCache` object to retrieve the\n  // template function. Override this method to provide your own\n  // custom rendering and template handling for all of Marionette.\n  render(template, data) {\n    if (!template) {\n      throw new MarionetteError({\n        name: 'TemplateNotFoundError',\n        message: 'Cannot render the template since its false, null or undefined.'\n      });\n    }\n\n    const templateFunc = _.isFunction(template) ? template : TemplateCache.get(template);\n\n    return templateFunc(data);\n  }\n};\n\nexport default Renderer;\n","// View\n// ---------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport ViewMixin from './mixins/view';\nimport RegionsMixin from './mixins/regions';\nimport Renderer from './config/renderer';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'regionClass',\n  'regions',\n  'template',\n  'templateContext',\n  'triggers',\n  'ui'\n];\n\n// The standard view. Includes view events, automatic rendering\n// of Underscore templates, nested views, and more.\nconst View = Backbone.View.extend({\n\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this._initRegions();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Serialize the view's model *or* collection, if\n  // it exists, for the template\n  serializeData() {\n    if (!this.model && !this.collection) {\n      return {};\n    }\n\n    // If we have a model, we serialize that\n    if (this.model) {\n      return this.serializeModel();\n    }\n\n    // Otherwise, we serialize the collection,\n    // making it available under the `items` property\n    return {\n      items: this.serializeCollection()\n    };\n  },\n\n  // Prepares the special `model` property of a view\n  // for being displayed in the template. By default\n  // we simply clone the attributes. Override this if\n  // you need a custom transformation for your view's model\n  serializeModel() {\n    if (!this.model) { return {}; }\n    return _.clone(this.model.attributes);\n  },\n\n  // Serialize a collection by cloning each of\n  // its model's attributes\n  serializeCollection() {\n    if (!this.collection) { return {}; }\n    return this.collection.map(function(model) { return _.clone(model.attributes); });\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // rendered or attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isRendered = this.Dom.hasContents(this.el);\n    this._isAttached = isNodeAttached(this.el);\n\n    if (this._isRendered) {\n      this.bindUIElements();\n    }\n\n    return this;\n  },\n\n  // Render the view, defaulting to underscore.js templates.\n  // You can override this in your view definition to provide\n  // a very specific rendering for your view. In general, though,\n  // you should override the `Marionette.Renderer` object to\n  // change how Marionette renders views.\n  // Subsequent renders after the first will re-render all nested\n  // views.\n  render() {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:render', this);\n\n    // If this is not the first render call, then we need to\n    // re-initialize the `el` for each region\n    if (this._isRendered) {\n      this._reInitRegions();\n    }\n\n    this._renderTemplate();\n    this.bindUIElements();\n\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n\n    return this;\n  },\n\n  // Internal method to render the template with the serialized data\n  // and template context via the `Marionette.Renderer` object.\n  _renderTemplate() {\n    const template = this.getTemplate();\n\n    // Allow template-less views\n    if (template === false) {\n      deprecate('template:false is deprecated.  Use _.noop.');\n      return;\n    }\n\n    // Add in entity data and template context\n    const data = this.mixinTemplateContext(this.serializeData());\n\n    // Render and add to el\n    const html = this._renderHtml(template, data);\n    this.attachElContent(html);\n  },\n\n  // Renders the data into the template\n  _renderHtml(template, data) {\n    return Renderer.render(template, data, this);\n  },\n\n  // Get the template for this view\n  // instance. You can set a `template` attribute in the view\n  // definition or pass a `template: \"whatever\"` parameter in\n  // to the constructor options.\n  getTemplate() {\n    return this.template;\n  },\n\n  // Mix in template context methods. Looks for a\n  // `templateContext` attribute, which can either be an\n  // object literal, or a function that returns an object\n  // literal. All methods and attributes from this object\n  // are copies to the object passed in.\n  mixinTemplateContext(target = {}) {\n    const templateContext = _.result(this, 'templateContext');\n    return _.extend(target, templateContext);\n  },\n\n  // Attaches the content of a given view.\n  // This method can be overridden to optimize rendering,\n  // or to render in a non standard way.\n  //\n  // For example, using `innerHTML` instead of `$el.html`\n  //\n  // ```js\n  // attachElContent(html) {\n  //   this.el.innerHTML = html;\n  //   return this;\n  // }\n  // ```\n  attachElContent(html) {\n    this.Dom.setContents(this.el, html, this.$el);\n\n    return this;\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this.removeRegions();\n  },\n\n  _getImmediateChildren() {\n    return _.chain(this._getRegions())\n      .map('currentView')\n      .compact()\n      .value();\n  }\n}, {\n  // Sets the renderer for the Marionette.View class\n  setRenderer(renderer) {\n    this.prototype._renderHtml = renderer;\n    return this;\n  },\n\n  setDomApi\n});\n\n_.extend(View.prototype, ViewMixin, RegionsMixin);\n\nexport default View;\n","// Mix in methods from Underscore, for iteration, and other\n// collection related features.\n// Borrowing this code from Backbone.Collection:\n// https://github.com/jashkenas/backbone/blob/1.1.2/backbone.js#L962\n\nimport _ from 'underscore';\n\nconst methods = ['forEach', 'each', 'map', 'find', 'detect', 'filter',\n                'select', 'reject', 'every', 'all', 'some', 'any', 'include',\n                'contains', 'invoke', 'toArray', 'first', 'initial', 'rest',\n                'last', 'without', 'isEmpty', 'pluck', 'reduce', 'partition'];\n\nconst emulateCollection = function(object, listProperty) {\n  _.each(methods, function(method) {\n    object[method] = function() {\n      const list = _.result(this, listProperty);\n      const args = Array.prototype.slice.call(arguments);\n      return _[method].apply(_, [list].concat(args));\n    };\n  });\n};\n\nexport default emulateCollection;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function(views) {\n  this._views = {};\n  this._indexByModel = {};\n  this._indexByCustom = {};\n  this._updateLength();\n\n  _.each(views, _.bind(this.add, this));\n};\n\nemulateCollection(Container.prototype, '_getViews');\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  _getViews() {\n    return _.values(this._views);\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Optionally specify\n  // a custom key to store an retrieve the view.\n  add(view, customIndex) {\n    return this._add(view, customIndex)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _add(view, customIndex) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._views[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // index by custom\n    if (customIndex) {\n      this._indexByCustom[customIndex] = viewCid;\n    }\n\n    return this;\n  },\n\n  // Find a view by the model that was attached to\n  // it. Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to\n  // it. Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by a custom indexer.\n  findByCustom(index) {\n    const viewCid = this._indexByCustom[index];\n    return this.findByCid(viewCid);\n  },\n\n  // Find by index. This is not guaranteed to be a\n  // stable index.\n  findByIndex(index) {\n    return _.values(this._views)[index];\n  },\n\n  // retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._views[cid];\n  },\n\n  // Remove a view\n  remove(view) {\n    return this._remove(view)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _remove(view) {\n    const viewCid = view.cid;\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // delete custom index\n    _.some(this._indexByCustom, _.bind(function(cid, key) {\n      if (cid === viewCid) {\n        delete this._indexByCustom[key];\n        return true;\n      }\n    }, this));\n\n    // remove the view from the container\n    delete this._views[viewCid];\n\n    return this;\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = _.size(this._views);\n\n    return this;\n  }\n});\n\nexport default Container;\n","// Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './child-view-container';\nimport MarionetteError from './error';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'filter',\n  'emptyView',\n  'emptyViewOptions',\n  'modelEvents',\n  'reorderOnSort',\n  'sort',\n  'triggers',\n  'ui',\n  'viewComparator'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n\n  // flag for maintaining the sorted order of the collection\n  sort: true,\n\n  // constructor\n  // option to pass `{sort: false}` to prevent the `CollectionView` from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  //\n  // option to pass `{viewComparator: compFunction()}` to allow the `CollectionView`\n  // to use a custom sort order for the collection.\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this.once('render', this._initialEvents);\n    this._initChildViewStorage();\n    this._bufferedChildren = [];\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Instead of inserting elements one by one into the page, it's much more performant to insert\n  // elements into a document fragment and then insert that document fragment into the page\n  _startBuffering() {\n    this._isBuffering = true;\n  },\n\n  _endBuffering() {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n    const triggerOnChildren = shouldTriggerAttach ? this._getImmediateChildren() : [];\n\n    this._isBuffering = false;\n\n    _.each(triggerOnChildren, child => {\n      triggerMethodOn(child, 'before:attach', child);\n    });\n\n    this.attachBuffer(this, this._createBuffer());\n\n    _.each(triggerOnChildren, child => {\n      child._isAttached = true;\n      triggerMethodOn(child, 'attach', child);\n    });\n\n    this._bufferedChildren = [];\n  },\n\n  _getImmediateChildren() {\n    return _.values(this.children._views);\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.render);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Handle a child added to the collection\n  _onCollectionAdd(child, collection, opts) {\n    // `index` is present when adding with `at` since BB 1.2; indexOf fallback for < 1.2\n    let index = opts.at !== undefined && (opts.index || collection.indexOf(child));\n\n    // When filtered or when there is no initial index, calculate index.\n    if (this.filter || index === false) {\n      index = _.indexOf(this._filteredSortedModels(index), child);\n    }\n\n    if (this._shouldAddChild(child, index)) {\n      this._destroyEmptyView();\n      this._addChild(child, index)\n    }\n  },\n\n  // Handle collection update model removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n    this._removeChildModels(changes.removed);\n  },\n\n  // Remove the child views and destroy them.\n  // This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  // \"models\" is an array of models and the corresponding views\n  // will be removed and destroyed from the CollectionView\n  _removeChildModels(models) {\n    // Used to determine where to update the remaining\n    // sibling view indices after these views are removed.\n    const removedViews = this._getRemovedViews(models);\n\n    if (!removedViews.length) {\n      return;\n    }\n\n    this.children._updateLength();\n\n    // decrement the index of views after this one\n    this._updateIndices(removedViews, false);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n  },\n\n  // Returns the views that will be used for re-indexing\n  // through CollectionView#_updateIndices.\n  _getRemovedViews(models) {\n\n    // Returning a view means something was removed.\n    return _.reduce(models, (removingViews, model) => {\n      const view = model && this.children.findByModel(model);\n\n      if (!view || view._isDestroyed) {\n        return removingViews;\n      }\n\n      this._removeChildView(view);\n\n      removingViews.push(view);\n\n      return removingViews;\n    }, []);\n  },\n\n  _removeChildView(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n\n    this.stopListening(view);\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views. Override this method to provide your own implementation of a\n  // render function for the collection view.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n    this._renderChildren();\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // An efficient rendering used for filtering. Instead of modifying the whole DOM for the\n  // collection view, we are only adding or removing the related childrenViews.\n  setFilter(filter, {preventRender} = {}) {\n    const canBeRendered = this._isRendered && !this._isDestroyed;\n    const filterChanged = this.filter !== filter;\n    const shouldRender = canBeRendered && filterChanged && !preventRender;\n\n    if (shouldRender) {\n      const previousModels = this._filteredSortedModels();\n      this.filter = filter;\n      const models = this._filteredSortedModels();\n      this._applyModelDeltas(models, previousModels);\n    } else {\n      this.filter = filter;\n    }\n\n    return this;\n  },\n\n  // `removeFilter` is actually an alias for removing filters.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  // Calculate and apply difference by cid between `models` and `previousModels`.\n  _applyModelDeltas(models, previousModels) {\n    const currentIds = {};\n    _.each(models, (model, index) => {\n      const addedChildNotExists = !this.children.findByModel(model);\n      if (addedChildNotExists) {\n        this._onCollectionAdd(model, this.collection, {at: index});\n      }\n      currentIds[model.cid] = true;\n    });\n\n    const removeModels = _.filter(previousModels, (prevModel) => {\n      return !currentIds[prevModel.cid] && this.children.findByModel(prevModel);\n    });\n\n    this._removeChildModels(removeModels);\n  },\n\n  // Reorder DOM after sorting. When your element's rendering do not use their index,\n  // you can pass reorderOnSort: true to only reorder the DOM after a sort instead of\n  // rendering all the collectionView.\n  reorder() {\n    const children = this.children;\n    const models = this._filteredSortedModels();\n\n    if (!models.length && this._showingEmptyView) { return this; }\n\n    const anyModelsAdded = _.some(models, function(model) {\n      return !children.findByModel(model);\n    });\n\n    // If there are any new models added due to filtering we need to add child views,\n    // so render as normal.\n    if (anyModelsAdded) {\n      this.render();\n    } else {\n\n      const filteredOutModels = [];\n\n      // Get the DOM nodes in the same order as the models and\n      // find the model that were children before but aren't in this new order.\n      const elsToReorder = _.reduce(this.children._views, function(viewEls, view) {\n        const index = _.indexOf(models, view.model);\n\n        if (index === -1) {\n          filteredOutModels.push(view.model);\n          return viewEls;\n        }\n\n        view._index = index;\n\n        viewEls[index] = view.el;\n\n        return viewEls;\n      }, new Array(models.length));\n\n      this.triggerMethod('before:reorder', this);\n\n      const elBuffer = this.Dom.createBuffer();\n\n      _.each(elsToReorder, (el) => {\n        this.Dom.appendContents(elBuffer, el);\n      });\n\n      // Since append moves elements that are already in the DOM, appending the elements\n      // will effectively reorder them.\n      this._appendReorderedChildren(elBuffer);\n\n      // remove any views that have been filtered out\n      this._removeChildModels(filteredOutModels);\n\n      this.triggerMethod('reorder', this);\n    }\n    return this;\n  },\n\n  // Render view after sorting. Override this method to change how the view renders\n  // after a `sort` on the collection.\n  resortView() {\n    if (this.reorderOnSort) {\n      this.reorder();\n    } else {\n      this._renderChildren();\n    }\n    return this;\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will render.\n  _sortViews() {\n    const models = this._filteredSortedModels();\n\n    // check for any changes in sort order of views\n    const orderChanged = _.find(models, (item, index) => {\n      const view = this.children.findByModel(item);\n      return !view || view._index !== index;\n    });\n\n    if (orderChanged) {\n      this.resortView();\n    }\n  },\n\n  // Internal reference to what index a `emptyView` is.\n  _emptyViewIndex: -1,\n\n  // Internal method. Separated so that CompositeView can append to the childViewContainer\n  // if necessary\n  _appendReorderedChildren(children) {\n    this.Dom.appendContents(this.el, children, {_$el: this.$el});\n  },\n\n  // Internal method. Separated so that CompositeView can have more control over events\n  // being triggered, around the rendering process\n  _renderChildren() {\n    if (this._isRendered) {\n      this._destroyEmptyView();\n      this._destroyChildren();\n    }\n\n    const models = this._filteredSortedModels();\n    if (this.isEmpty({processedModels: models})) {\n      this._showEmptyView();\n    } else {\n      this.triggerMethod('before:render:children', this);\n      this._startBuffering();\n      this._showCollection(models);\n      this._endBuffering();\n      this.triggerMethod('render:children', this);\n    }\n  },\n\n  _createView(model, index) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model, index);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n    return view;\n  },\n\n  _setupChildView(view, index) {\n    monitorViewEvents(view);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n\n    if (this.sort) {\n      view._index = index;\n    }\n  },\n\n  // Internal method to loop through collection and show each child view.\n  _showCollection(models) {\n    _.each(models, _.bind(this._addChild, this));\n    this.children._updateLength();\n  },\n\n  // Allow the collection to be sorted by a custom view comparator\n  _filteredSortedModels(addedAt) {\n    if (!this.collection || !this.collection.length) { return []; }\n\n    const viewComparator = this.getViewComparator();\n    let models = this.collection.models;\n    addedAt = Math.min(Math.max(addedAt, 0), models.length - 1);\n\n    if (viewComparator) {\n      let addedModel;\n      // Preserve `at` location, even for a sorted view\n      if (addedAt) {\n        addedModel = models[addedAt];\n        models = models.slice(0, addedAt).concat(models.slice(addedAt + 1));\n      }\n      models = this._sortModelsBy(models, viewComparator);\n      if (addedModel) {\n        models.splice(addedAt, 0, addedModel);\n      }\n    }\n\n    // Filter after sorting in case the filter uses the index\n    models = this._filterModels(models);\n\n    return models;\n  },\n\n  getViewComparator() {\n    return this.viewComparator;\n  },\n\n  // Filter an array of models, if a filter exists\n  _filterModels(models) {\n    if (this.filter) {\n      models = _.filter(models, (model, index) => {\n        return this._shouldAddChild(model, index);\n      });\n    }\n    return models;\n  },\n\n  _sortModelsBy(models, comparator) {\n    if (typeof comparator === 'string') {\n      return _.sortBy(models, (model) => {\n        return model.get(comparator);\n      });\n    } else if (comparator.length === 1) {\n      return _.sortBy(models, _.bind(comparator, this));\n    } else {\n      return _.clone(models).sort(_.bind(comparator, this));\n    }\n  },\n\n  // Internal method to show an empty view in place of a collection of child views,\n  // when the collection is empty\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (EmptyView && !this._showingEmptyView) {\n      this._showingEmptyView = true;\n\n      const model = new Backbone.Model();\n      let emptyViewOptions =\n        this.emptyViewOptions || this.childViewOptions;\n      if (_.isFunction(emptyViewOptions)) {\n        emptyViewOptions = emptyViewOptions.call(this, model, this._emptyViewIndex);\n      }\n\n      const view = this.buildChildView(model, EmptyView, emptyViewOptions);\n\n      this.triggerMethod('before:render:empty', this, view);\n      this.addChildView(view, 0);\n      this.triggerMethod('render:empty', this, view);\n    }\n  },\n\n  // Internal method to destroy an existing emptyView instance if one exists. Called when\n  // a collection view has been rendered empty, and then a child is added to the collection.\n  _destroyEmptyView() {\n    if (this._showingEmptyView) {\n      this.triggerMethod('before:remove:empty', this);\n\n      this._destroyChildren();\n      delete this._showingEmptyView;\n\n      this.triggerMethod('remove:empty', this);\n    }\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  // Internal method for building and adding a child view\n  _addChild(child, index) {\n    const view = this._createView(child, index);\n    this.addChildView(view, index);\n\n    return view;\n  },\n\n  _getChildViewOptions(child, index) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child, index);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index.\n  // This will also update the indices of later views in the collection in order to keep the\n  // children in sync with the collection.\n  addChildView(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n    this._setupChildView(view, index);\n\n    // Store the child view itself so we can properly remove and/or destroy it later\n    if (this._isBuffering) {\n      // Add to children, but don't update children's length.\n      this.children._add(view);\n    } else {\n      // increment indices of views after this one\n      this._updateIndices(view, true);\n      this.children.add(view);\n    }\n\n    renderView(view);\n\n    this._attachView(view, index);\n\n    this.triggerMethod('add:child', this, view);\n\n    return view;\n  },\n\n  // Internal method. This decrements or increments the indices of views after the added/removed\n  // view to keep in sync with the collection.\n  _updateIndices(views, increment) {\n    if (!this.sort) {\n      return;\n    }\n\n    if (!increment) {\n      _.each(_.sortBy(this.children._views, '_index'), (view, index) => {\n        view._index = index;\n      });\n\n      return;\n    }\n\n    const view = _.isArray(views) ? _.max(views, '_index') : views;\n\n    if (_.isObject(view)) {\n      // update the indexes of views after this one\n      _.each(this.children._views, (laterView) => {\n        if (laterView._index >= view._index) {\n          laterView._index += 1;\n        }\n      });\n    }\n  },\n\n  _attachView(view, index) {\n    // Only trigger attach if already attached and not buffering,\n    // otherwise _endBuffering() or Region#show() handles this.\n    const shouldTriggerAttach = !view._isAttached && !this._isBuffering && this._isAttached && this.monitorViewEvents !== false;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    this.attachHtml(this, view, index);\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  // Build a `childView` for a model in the collection.\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  // Remove the child view and destroy it. This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  removeChildView(view) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    this._removeChildView(view);\n    this.children._updateLength();\n    // decrement the index of views after this one\n    this._updateIndices(view, false);\n    return view;\n  },\n\n  // check if the collection is empty or optionally whether an array of pre-processed models is empty\n  isEmpty(options) {\n    let models;\n    if (_.result(options, 'processedModels')) {\n      models = options.processedModels;\n    } else {\n      models = this.collection ? this.collection.models : [];\n      models = this._filterModels(models);\n    }\n    return models.length === 0;\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(collectionView, buffer) {\n    this.Dom.appendContents(collectionView.el, buffer, {_$el: collectionView.$el});\n  },\n\n  // Create a fragment buffer from the currently buffered children\n  _createBuffer() {\n    const elBuffer = this.Dom.createBuffer();\n    _.each(this._bufferedChildren, (b) => {\n      this.Dom.appendContents(elBuffer, b.el, {_$contents: b.$el});\n    });\n    return elBuffer;\n  },\n\n  // Append the HTML to the collection's `el`. Override this method to do something other\n  // than `.append`.\n  attachHtml(collectionView, childView, index) {\n    if (collectionView._isBuffering) {\n      // buffering happens on reset events and initial renders\n      // in order to reduce the number of inserts into the\n      // document, which are expensive.\n      collectionView._bufferedChildren.splice(index, 0, childView);\n    } else {\n      // If we've already rendered the main collection, append\n      // the new child into the correct order if we need to. Otherwise\n      // append to the end.\n      if (!collectionView._insertBefore(childView, index)) {\n        collectionView._insertAfter(childView);\n      }\n    }\n  },\n\n  // Internal method. Check whether we need to insert the view into the correct position.\n  _insertBefore(childView, index) {\n    let currentView;\n    const findPosition = this.sort && (index < this.children.length - 1);\n    if (findPosition) {\n      // Find the view after this one\n      currentView = _.find(this.children._views, (view) => {\n        return view._index === index + 1;\n      });\n    }\n\n    if (currentView) {\n      this.beforeEl(currentView.el, childView.el);\n      return true;\n    }\n\n    return false;\n  },\n\n  // Override to handle DOM inserting differently\n  beforeEl(el, siblings) {\n    this.$(el).before(siblings);\n  },\n\n  // Internal method. Append a view to the end of the $el\n  _insertAfter(childView) {\n    this.Dom.appendContents(this.el, childView.el, {_$el: this.$el, _$contents: childView.$el});\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren(options) {\n    if (!this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.children._updateLength();\n    this.triggerMethod('destroy:children', this);\n  },\n\n  // Return true if the given child should be shown. Return false otherwise.\n  // The filter will be passed (child, index, collection), where\n  //  'child' is the given model\n  //  'index' is the index of that model in the collection\n  //  'collection' is the collection referenced by this CollectionView\n  _shouldAddChild(child, index) {\n    const filter = this.filter;\n    return !_.isFunction(filter) || filter.call(this, child, index, this.collection);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","// Next Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './next-child-view-container';\nimport MarionetteError from './error';\nimport Region from './region';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'emptyView',\n  'emptyViewOptions',\n  'events',\n  'modelEvents',\n  'sortWithCollection',\n  'triggers',\n  'ui',\n  'viewComparator',\n  'viewFilter'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n  // flag for maintaining the sorted order of the collection\n  sortWithCollection: true,\n\n  // constructor\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this.once('render', this._initialEvents);\n\n    // This children container isn't really used by a render, but it provides\n    // the ability to check `this.children.length` prior to rendering\n    // It also allows for cases where only addChildView is used\n    this._initChildViewStorage();\n    this._initBehaviors();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    // Init empty region\n    this.getEmptyRegion();\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // Create an region to show the emptyView\n  getEmptyRegion() {\n    if (this._emptyRegion && !this._emptyRegion.isDestroyed()) {\n      return this._emptyRegion;\n    }\n\n    this._emptyRegion = new Region({ el: this.el, replaceElement: false });\n\n    this._emptyRegion._parentView = this;\n\n    return this._emptyRegion;\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    this.listenTo(this.collection, {\n      'sort': this._onCollectionSort,\n      'reset': this._onCollectionReset,\n      'update': this._onCollectionUpdate\n    });\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will re-sort.\n  _onCollectionSort(collection, { add, merge, remove }) {\n    if (!this.sortWithCollection || this.viewComparator === false) {\n      return;\n    }\n\n    // If the data is changing we will handle the sort later in `_onCollectionUpdate`\n    if (add || remove || merge) {\n      return;\n    }\n\n    // If the only thing happening here is sorting, sort.\n    this.sort();\n  },\n\n  _onCollectionReset() {\n    this.render();\n  },\n\n  // Handle collection update model additions and  removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n\n    // Remove first since it'll be a shorter array lookup.\n    const removedViews = changes.removed.length && this._removeChildModels(changes.removed);\n\n    this._addedViews = changes.added.length && this._addChildModels(changes.added);\n\n    this._detachChildren(removedViews);\n\n    this._showChildren();\n\n    // Destroy removed child views after all of the render is complete\n    this._removeChildViews(removedViews);\n  },\n\n  _removeChildModels(models) {\n    return _.reduce(models, (views, model) => {\n      const removeView = this._removeChildModel(model);\n\n      if (removeView) { views.push(removeView); }\n\n      return views;\n    }, []);\n  },\n\n  _removeChildModel(model) {\n    const view = this.children.findByModel(model);\n\n    if (view) { this._removeChild(view); }\n\n    return view;\n  },\n\n  _removeChild(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Added views are returned for consistency with _removeChildModels\n  _addChildModels(models) {\n    return _.map(models, _.bind(this._addChildModel, this));\n  },\n\n  _addChildModel(model) {\n    const view = this._createChildView(model);\n\n    this._addChild(view);\n\n    return view;\n  },\n\n  _createChildView(model) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n\n    return view;\n  },\n\n  _addChild(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n\n    this._setupChildView(view);\n    this.children._add(view, index);\n\n    this.triggerMethod('add:child', this, view);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  _getChildViewOptions(child) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Build a `childView` for a model in the collection.\n  // Override to customize the build\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other\n    // than through the CollectionView.\n    // If this happens we need to remove the reference to the view\n    // since once a view has been destroyed we can not reuse it.\n    view.on('destroy', this.removeChildView, this);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n  },\n\n  // used by ViewMixin's `_childViewEventHandler`\n  _getImmediateChildren() {\n    return this.children._views;\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n\n    this._destroyChildren();\n\n    // After all children have been destroyed re-init the container\n    this.children._init();\n\n    if (this.collection) {\n      this._addChildModels(this.collection.models);\n    }\n\n    this._showChildren();\n\n    this._isRendered = true;\n\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // Sorts the children then filters and renders the results.\n  sort() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    this._showChildren();\n\n    return this;\n  },\n\n  _showChildren() {\n    if (this.isEmpty()) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._sortChildren();\n\n    this.filter();\n  },\n\n  // Returns true if the collectionView is considered empty.\n  // This is called twice during a render. Once to check the data,\n  // and again when views are filtered. Override this function to\n  // customize what empty means.\n  isEmpty(allViewsFiltered) {\n    return allViewsFiltered || !this.children.length;\n  },\n\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (!EmptyView) {\n      return;\n    }\n\n    const options = this._getEmptyViewOptions();\n\n    const emptyRegion = this.getEmptyRegion();\n\n    emptyRegion.show(new EmptyView(options));\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Remove the emptyView\n  _destroyEmptyView() {\n    const emptyRegion = this.getEmptyRegion();\n    // Only empty if a view is show so the region\n    // doesn't detach any other unrelated HTML\n    if (emptyRegion.hasView()) {\n      emptyRegion.empty();\n    }\n  },\n\n  //\n  _getEmptyViewOptions() {\n    const emptyViewOptions = this.emptyViewOptions || this.childViewOptions;\n\n    if (_.isFunction(emptyViewOptions)) {\n      return emptyViewOptions.call(this);\n    }\n\n    return emptyViewOptions;\n  },\n\n  // Sorts views by viewComparator and sets the children to the new order\n  _sortChildren() {\n    let viewComparator = this.getComparator();\n\n    if (!viewComparator) { return; }\n\n    // If children are sorted prevent added to end perf\n    delete this._addedViews;\n\n    this.triggerMethod('before:sort', this);\n\n    this.children._sort(viewComparator, this);\n\n    this.triggerMethod('sort', this);\n  },\n\n  // Sets the view's `viewComparator` and applies the sort if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setComparator(comparator, {preventRender} = {}) {\n    const comparatorChanged = this.viewComparator !== comparator;\n    const shouldSort = comparatorChanged && !preventRender;\n\n    this.viewComparator = comparator;\n\n    if (shouldSort) {\n      this.sort();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewComparator` and follows the same rules for rendering as `setComparator`.\n  removeComparator(options) {\n    return this.setComparator(null, options);\n  },\n\n  // If viewComparator is overriden it will be returned here.\n  // Additionally override this function to provide custom\n  // viewComparator logic\n  getComparator() {\n    if (this.viewComparator) { return this.viewComparator }\n\n    if (!this.sortWithCollection || this.viewComparator === false || !this.collection) {\n      return false;\n    }\n\n    return this._viewComparator;\n  },\n\n  // Default internal view comparator that order the views by\n  // the order of the collection\n  _viewComparator(view) {\n    return this.collection.indexOf(view.model);\n  },\n\n  // This method re-filters the children views and re-renders the results\n  filter() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    const filteredViews = this._filterChildren();\n\n    this._renderChildren(filteredViews);\n\n    return this;\n  },\n\n  _filterChildren() {\n    const viewFilter = this._getFilter();\n    const addedViews = this._addedViews;\n\n    delete this._addedViews;\n\n    if (!viewFilter) {\n      if (addedViews) { return addedViews; }\n\n      return this.children._views;\n    }\n\n    this.triggerMethod('before:filter', this);\n\n    const attachViews = [];\n    const detachViews = [];\n\n    _.each(this.children._views, (view, key, children) => {\n      (viewFilter.call(this, view, key, children) ? attachViews : detachViews).push(view);\n    });\n\n    this._detachChildren(detachViews);\n\n    this.triggerMethod('filter', this, attachViews, detachViews);\n\n    return attachViews;\n  },\n\n  // This method returns a function for the viewFilter\n  _getFilter() {\n    const viewFilter = this.getFilter();\n\n    if (!viewFilter) { return false; }\n\n    if (_.isFunction(viewFilter)) {\n      return viewFilter;\n    }\n\n    // Support filter predicates `{ fooFlag: true }`\n    if (_.isObject(viewFilter)) {\n      const matcher = _.matches(viewFilter);\n      return function(view) {\n        return matcher(view.model && view.model.attributes);\n      };\n    }\n\n    // Filter by model attribute\n    if (_.isString(viewFilter)) {\n      return function(view) {\n        return view.model && view.model.get(viewFilter);\n      };\n    }\n\n    throw new MarionetteError({\n      name: 'InvalidViewFilterError',\n      message: '\"viewFilter\" must be a function, predicate object literal, a string indicating a model attribute, or falsy'\n    });\n  },\n\n  // Override this function to provide custom\n  // viewFilter logic\n  getFilter() {\n    return this.viewFilter;\n  },\n\n  // Sets the view's `viewFilter` and applies the filter if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setFilter(filter, {preventRender} = {}) {\n    const filterChanged = this.viewFilter !== filter;\n    const shouldRender = filterChanged && !preventRender;\n\n    this.viewFilter = filter;\n\n    if (shouldRender) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewFilter` and follows the same rules for rendering as `setFilter`.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  _detachChildren(detachingViews) {\n    _.each(detachingViews, _.bind(this._detachChildView, this));\n  },\n\n  _detachChildView(view) {\n    const shouldTriggerDetach = view._isAttached && this.monitorViewEvents !== false;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    this.detachHtml(view);\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the collectionView detaches a child view\n  detachHtml(view) {\n    this.Dom.detachEl(view.el, view.$el);\n  },\n\n  _renderChildren(views) {\n    if (this.isEmpty(!views.length)) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._destroyEmptyView();\n\n    this.triggerMethod('before:render:children', this, views);\n\n    const els = this._getBuffer(views);\n\n    this._attachChildren(els, views);\n\n    this.triggerMethod('render:children', this, views);\n  },\n\n  _attachChildren(els, views) {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n\n    views = shouldTriggerAttach ? views : [];\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      triggerMethodOn(view, 'before:attach', view);\n    });\n\n    this.attachHtml(els);\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    });\n  },\n\n  // Renders each view in children and creates a fragment buffer from them\n  _getBuffer(views) {\n    const elBuffer = this.Dom.createBuffer();\n\n    _.each(views, view => {\n      renderView(view);\n      this.Dom.appendContents(elBuffer, view.el, {_$contents: view.$el});\n    });\n\n    return elBuffer;\n  },\n\n  // Override this method to do something other than `.append`.\n  // You can attach any HTML at this point including the els.\n  attachHtml(els) {\n    this.Dom.appendContents(this.el, els, {_$el: this.$el});\n  },\n\n  swapChildViews(view1, view2) {\n    if (!this.children.hasView(view1) || !this.children.hasView(view2)) {\n      throw new MarionetteError({\n        name: 'ChildSwapError',\n        message: 'Both views must be children of the collection view'\n      });\n    }\n\n    this.children._swap(view1, view2);\n    this.Dom.swapEl(view1.el, view2.el);\n\n    // If the views are not filtered the same, refilter\n    if (this.Dom.hasEl(this.el, view1.el) !== this.Dom.hasEl(this.el, view2.el)) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index, based on the current sort\n  addChildView(view, index) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    // Only cache views if added to the end\n    if (!index || index >= this.children.length) {\n      this._addedViews = [view];\n    }\n    this._addChild(view, index);\n    this._showChildren();\n\n    return view;\n  },\n\n  // Detach a view from the children.  Best used when adding a\n  // childView from `addChildView`\n  detachChildView(view) {\n    this.removeChildView(view, { shouldDetach: true });\n\n    return view;\n  },\n\n  // Remove the child view and destroy it.  Best used when adding a\n  // childView from `addChildView`\n  // The options argument is for internal use only\n  removeChildView(view, options) {\n    if (!view) {\n      return view;\n    }\n\n    this._removeChildView(view, options);\n\n    this._removeChild(view);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n\n    return view;\n  },\n\n  _removeChildViews(views) {\n    _.each(views, _.bind(this._removeChildView, this));\n  },\n\n  _removeChildView(view, {shouldDetach} = {}) {\n    view.off('destroy', this.removeChildView, this);\n\n    if (shouldDetach) {\n      this._detachChildView(view);\n    } else {\n      this._destroyChildView(view);\n    }\n\n    this.stopListening(view);\n  },\n\n  _destroyChildView(view) {\n    if (view._isDestroyed) {\n      return;\n    }\n\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n    const emptyRegion = this.getEmptyRegion();\n    emptyRegion.destroy();\n    delete this._addedViews;\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren() {\n    if (!this.children || !this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    if (this.monitorViewEvents === false) {\n      this.Dom.detachContents(this.el, this.$el);\n    }\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.triggerMethod('destroy:children', this);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","// Composite View\n// --------------\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport MarionetteError from './error';\nimport CollectionView from './collection-view';\nimport View from './view';\n\nconst ClassOptions = [\n  'childViewContainer',\n  'template',\n  'templateContext'\n];\n\n// Used for rendering a branch-leaf, hierarchical structure.\n// Extends directly from CollectionView\n// @deprecated\nconst CompositeView = CollectionView.extend({\n\n  // Setting up the inheritance chain which allows changes to\n  // Marionette.CollectionView.prototype.constructor which allows overriding\n  // option to pass '{sort: false}' to prevent the CompositeView from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  constructor(options) {\n    deprecate('CompositeView is deprecated. Convert to View at your earliest convenience');\n\n    this.mergeOptions(options, ClassOptions);\n\n    CollectionView.prototype.constructor.apply(this, arguments);\n  },\n\n  // Configured the initial events that the composite view\n  // binds to. Override this method to prevent the initial\n  // events, or to add your own initial events.\n  _initialEvents() {\n\n    // Bind only after composite view is rendered to avoid adding child views\n    // to nonexistent childViewContainer\n\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.renderChildren);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Retrieve the `childView` to be used when rendering each of\n  // the items in the collection. The default is to return\n  // `this.childView` or Marionette.CompositeView if no `childView`\n  // has been defined. As happens in CollectionView, `childView` can\n  // be a function (which should return a view class).\n  _getChildView(child) {\n    let childView = this.childView;\n\n    // for CompositeView, if `childView` is not specified, we'll get the same\n    // composite view class rendered for each child in the collection\n    // then check if the `childView` is a view class (the common case)\n    // finally check if it's a function (which we assume that returns a view class)\n    if (!childView) {\n      return this.constructor;\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // Return the serialized model\n  serializeData() {\n    return this.serializeModel();\n  },\n\n  // Renders the model and the collection.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this._isRendering = true;\n    this.resetChildViewContainer();\n\n    this.triggerMethod('before:render', this);\n\n    this._renderTemplate();\n    this.bindUIElements();\n    this.renderChildren();\n\n    this._isRendering = false;\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  renderChildren() {\n    if (this._isRendered || this._isRendering) {\n      CollectionView.prototype._renderChildren.call(this);\n    }\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(compositeView, buffer) {\n    const $container = this.getChildViewContainer(compositeView);\n    this.Dom.appendContents($container[0], buffer, {_$el: $container});\n  },\n\n  // Internal method. Append a view to the end of the $el.\n  // Overidden from CollectionView to ensure view is appended to\n  // childViewContainer\n  _insertAfter(childView) {\n    const $container = this.getChildViewContainer(this, childView);\n    this.Dom.appendContents($container[0], childView.el, {_$el: $container, _$contents: childView.$el});\n  },\n\n  // Internal method. Append reordered childView'.\n  // Overidden from CollectionView to ensure reordered views\n  // are appended to childViewContainer\n  _appendReorderedChildren(children) {\n    const $container = this.getChildViewContainer(this);\n    this.Dom.appendContents($container[0], children, {_$el: $container});\n  },\n\n  // Internal method to ensure an `$childViewContainer` exists, for the\n  // `attachHtml` method to use.\n  getChildViewContainer(containerView, childView) {\n    if (!!containerView.$childViewContainer) {\n      return containerView.$childViewContainer;\n    }\n\n    let container;\n    const childViewContainer = containerView.childViewContainer;\n    if (childViewContainer) {\n\n      const selector = _.result(containerView, 'childViewContainer');\n\n      if (selector.charAt(0) === '@' && containerView.ui) {\n        container = containerView.ui[selector.substr(4)];\n      } else {\n        container = this.$(selector);\n      }\n\n      if (container.length <= 0) {\n        throw new MarionetteError({\n          name: 'ChildViewContainerMissingError',\n          message: `The specified \"childViewContainer\" was not found: ${containerView.childViewContainer}`\n        });\n      }\n\n    } else {\n      container = containerView.$el;\n    }\n\n    containerView.$childViewContainer = container;\n    return container;\n  },\n\n  // Internal method to reset the `$childViewContainer` on render\n  resetChildViewContainer() {\n    if (this.$childViewContainer) {\n      this.$childViewContainer = undefined;\n    }\n  }\n});\n\n// To prevent duplication but allow the best View organization\n// Certain View methods are mixed directly into the deprecated CompositeView\nconst MixinFromView = _.pick(View.prototype, 'serializeModel', 'getTemplate', '_renderTemplate', '_renderHtml', 'mixinTemplateContext', 'attachElContent');\n_.extend(CompositeView.prototype, MixinFromView);\n\nexport default CompositeView;\n","// Behavior\n// --------\n\n// A Behavior is an isolated set of DOM /\n// user interactions that can be mixed into any View.\n// Behaviors allow you to blackbox View specific interactions\n// into portable logical chunks, keeping your views simple and your code DRY.\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport getNamespacedEventName from './utils/get-namespaced-event-name';\nimport MarionetteObject from './object';\nimport DelegateEntityEventsMixin from './mixins/delegate-entity-events';\nimport TriggersMixin from './mixins/triggers';\nimport UIMixin from './mixins/ui';\n\nconst ClassOptions = [\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'triggers',\n  'ui'\n];\n\nconst Behavior = MarionetteObject.extend({\n  cidPrefix: 'mnb',\n\n  constructor(options, view) {\n    // Setup reference to the view.\n    // this comes in handle when a behavior\n    // wants to directly talk up the chain\n    // to the view.\n    this.view = view;\n\n    if (this.defaults) {\n      deprecate('Behavior defaults are deprecated. For similar functionality set options on the Behavior class.');\n    }\n\n    this.defaults = _.clone(_.result(this, 'defaults', {}));\n\n    this._setOptions(_.extend({}, this.defaults, options));\n    this.mergeOptions(this.options, ClassOptions);\n\n    // Construct an internal UI hash using\n    // the behaviors UI hash and then the view UI hash.\n    // This allows the user to use UI hash elements\n    // defined in the parent view as well as those\n    // defined in the given behavior.\n    // This order will help the reuse and share of a behavior\n    // between multiple views, while letting a view override a\n    // selector under an UI key.\n    this.ui = _.extend({}, _.result(this, 'ui'), _.result(view, 'ui'));\n\n    MarionetteObject.apply(this, arguments);\n  },\n\n  // proxy behavior $ method to the view\n  // this is useful for doing jquery DOM lookups\n  // scoped to behaviors view.\n  $() {\n    return this.view.$.apply(this.view, arguments);\n  },\n\n  // Stops the behavior from listening to events.\n  // Overrides Object#destroy to prevent additional events from being triggered.\n  destroy() {\n    this.stopListening();\n\n    this.view._removeBehavior(this);\n\n    return this;\n  },\n\n  proxyViewProperties() {\n    this.$el = this.view.$el;\n    this.el = this.view.el;\n\n    return this;\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n\n    return this;\n  },\n\n  unbindUIElements() {\n    this._unbindUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  getEvents() {\n    // Normalize behavior events hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorEvents = this.normalizeUIKeys(_.result(this, 'events'));\n\n    // binds the handler to the behavior and builds a unique eventName\n    return _.reduce(behaviorEvents, (events, behaviorHandler, key) => {\n      if (!_.isFunction(behaviorHandler)) {\n        behaviorHandler = this[behaviorHandler];\n      }\n      if (!behaviorHandler) { return events; }\n      key = getNamespacedEventName(key, this.cid);\n      events[key] = _.bind(behaviorHandler, this);\n      return events;\n    }, {});\n  },\n\n  // Internal method to build all trigger handlers for a given behavior\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Normalize behavior triggers hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorTriggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    return this._getViewTriggers(this.view, behaviorTriggers);\n  }\n\n});\n\n_.extend(Behavior.prototype, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default Behavior;\n","// Application\n// -----------\nimport buildRegion from './common/build-region';\nimport MarionetteObject from './object';\nimport Region from './region';\n\nconst ClassOptions = [\n  'region',\n  'regionClass'\n];\n\n// A container for a Marionette application.\nconst Application = MarionetteObject.extend({\n  cidPrefix: 'mna',\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    this._initRegion();\n\n    MarionetteObject.prototype.constructor.apply(this, arguments);\n  },\n\n  regionClass: Region,\n\n  _initRegion() {\n    const region = this.region;\n\n    if (!region) { return; }\n\n    const defaults = {\n      regionClass: this.regionClass\n    };\n\n    this._region = buildRegion(region, defaults);\n  },\n\n  getRegion() {\n    return this._region;\n  },\n\n  showView(view, ...args) {\n    const region = this.getRegion();\n    return region.show(view, ...args);\n  },\n\n  getView() {\n    return this.getRegion().currentView;\n  },\n\n  // kick off all of the application's processes.\n  start(options) {\n    this.triggerMethod('before:start', this, options);\n    this.triggerMethod('start', this, options);\n    return this;\n  }\n\n});\n\nexport default Application;\n","// App Router\n// ----------\n\n// Reduce the boilerplate code of handling route events\n// and then calling a single method on another object,\n// called a controller.\n// Have your routers configured to call the method on\n// your controller, directly.\n//\n// Configure an AppRouter with `appRoutes`.\n//\n// App routers can only take one `controller` object.\n// It is recommended that you divide your controller\n// objects in to smaller pieces of related functionality\n// and have multiple routers / controllers, instead of\n// just one giant router and controller.\n//\n// You can also add standard routes to an AppRouter.\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from './common/trigger-method';\nimport MarionetteError from './error';\nimport CommonMixin from './mixins/common';\n\nconst ClassOptions = [\n  'appRoutes',\n  'controller'\n];\n\nconst AppRouter = Backbone.Router.extend({\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    Backbone.Router.apply(this, arguments);\n\n    const appRoutes = this.appRoutes;\n    const controller = this._getController();\n    this.processAppRoutes(controller, appRoutes);\n    this.on('route', this._processOnRoute, this);\n  },\n\n  // Similar to route method on a Backbone Router but\n  // method is called on the controller\n  appRoute(route, methodName) {\n    const controller = this._getController();\n    this._addAppRoute(controller, route, methodName);\n    return this;\n  },\n\n  // process the route event and trigger the onRoute\n  // method call, if it exists\n  _processOnRoute(routeName, routeArgs) {\n    // make sure an onRoute before trying to call it\n    if (_.isFunction(this.onRoute)) {\n      // find the path that matches the current route\n      const routePath = _.invert(this.appRoutes)[routeName];\n      this.onRoute(routeName, routePath, routeArgs);\n    }\n  },\n\n  // Internal method to process the `appRoutes` for the\n  // router, and turn them in to routes that trigger the\n  // specified method on the specified `controller`.\n  processAppRoutes(controller, appRoutes) {\n    if (!appRoutes) { return this; }\n\n    const routeNames = _.keys(appRoutes).reverse(); // Backbone requires reverted order of routes\n\n    _.each(routeNames, route => {\n      this._addAppRoute(controller, route, appRoutes[route]);\n    });\n\n    return this;\n  },\n\n  _getController() {\n    return this.controller;\n  },\n\n  _addAppRoute(controller, route, methodName) {\n    const method = controller[methodName];\n\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was not found on the controller`);\n    }\n\n    this.route(route, methodName, _.bind(method, controller));\n  },\n\n  triggerMethod: triggerMethod\n});\n\n_.extend(AppRouter.prototype, CommonMixin);\n\nexport default AppRouter;\n","import Backbone from 'backbone';\nimport {version} from '../package.json';\n\nimport proxy from './utils/proxy';\nimport extend from './utils/extend';\nimport deprecate from './utils/deprecate';\n\nimport isNodeAttached from './common/is-node-attached';\nimport mergeOptions from './common/merge-options';\nimport getOption from './common/get-option';\nimport normalizeMethods from './common/normalize-methods';\nimport monitorViewEvents from './common/monitor-view-events';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from './common/bind-events';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from './common/bind-requests';\n\nimport {\n  triggerMethod,\n  triggerMethodOn\n} from './common/trigger-method';\n\n\nimport MarionetteObject from './object';\nimport TemplateCache from './template-cache';\nimport View from './view';\nimport CollectionView from './collection-view';\nimport NextCollectionView from './next-collection-view';\nimport CompositeView from './composite-view';\nimport Behavior from './behavior';\nimport Region from './region';\nimport Application from './application';\nimport AppRouter from './app-router';\nimport MarionetteError from './error';\n\nimport behaviorsLookup from './config/behaviors-lookup';\nimport DomApi from './config/dom';\nimport Renderer from './config/renderer';\n\nimport {\n  FEATURES,\n  isEnabled,\n  setEnabled\n} from './config/features';\n\nconst previousMarionette = Backbone.Marionette;\nconst Marionette = Backbone.Marionette = {};\n\n// This allows you to run multiple instances of Marionette on the same\n// webapp. After loading the new version, call `noConflict()` to\n// get a reference to it. At the same time the old version will be\n// returned to Backbone.Marionette.\nMarionette.noConflict = function() {\n  Backbone.Marionette = previousMarionette;\n  return this;\n};\n\n// Utilities\nMarionette.bindEvents = proxy(bindEvents);\nMarionette.unbindEvents = proxy(unbindEvents);\nMarionette.bindRequests = proxy(bindRequests);\nMarionette.unbindRequests = proxy(unbindRequests);\nMarionette.mergeOptions = proxy(mergeOptions);\nMarionette.getOption = proxy(getOption);\nMarionette.normalizeMethods = proxy(normalizeMethods);\nMarionette.extend = extend;\nMarionette.isNodeAttached = isNodeAttached;\nMarionette.deprecate = deprecate;\nMarionette.triggerMethod = proxy(triggerMethod);\nMarionette.triggerMethodOn = triggerMethodOn;\nMarionette.isEnabled = isEnabled;\nMarionette.setEnabled = setEnabled;\nMarionette.monitorViewEvents = monitorViewEvents;\n\nMarionette.Behaviors = {};\nMarionette.Behaviors.behaviorsLookup = behaviorsLookup;\n\n// Classes\nMarionette.Application = Application;\nMarionette.AppRouter = AppRouter;\nMarionette.Renderer = Renderer;\nMarionette.TemplateCache = TemplateCache;\nMarionette.View = View;\nMarionette.CollectionView = CollectionView;\nMarionette.NextCollectionView = NextCollectionView;\nMarionette.CompositeView = CompositeView;\nMarionette.Behavior = Behavior;\nMarionette.Region = Region;\nMarionette.Error = MarionetteError;\nMarionette.Object = MarionetteObject;\n\n// Configuration\nMarionette.DEV_MODE = false;\nMarionette.FEATURES = FEATURES;\nMarionette.VERSION = version;\nMarionette.DomApi = DomApi;\nMarionette.setDomApi = function(mixin) {\n  CollectionView.setDomApi(mixin);\n  CompositeView.setDomApi(mixin);\n  NextCollectionView.setDomApi(mixin);\n  Region.setDomApi(mixin);\n  View.setDomApi(mixin);\n};\n\nexport default Marionette;\n","import MarionetteError from '../error';\n\n// Placeholder method to be extended by the user.\n// The method should define the object that stores the behaviors.\n// i.e.\n//\n// ```js\n// Marionette.Behaviors.behaviorsLookup: function() {\n//   return App.Behaviors\n// }\n// ```\nexport default function behaviorsLookup() {\n  throw new MarionetteError({\n    message: 'You must define where your behaviors are stored.',\n    url: 'marionette.behaviors.md#behaviorslookup'\n  });\n}\n"]}
\ No newline at end of file
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Trigger Method\n// --------------\n\nimport _ from 'underscore';\nimport getOption from './get-option';\n\n// split the event name on the \":\"\nconst splitter = /(^|:)(\\w)/gi;\n\n// take the event section (\"section1:section2:section3\")\n// and turn it in to uppercase name onSection1Section2Section3\nfunction getEventName(match, prefix, eventName) {\n  return eventName.toUpperCase();\n}\n\nconst getOnMethodName = _.memoize(function(event) {\n  return 'on' + event.replace(splitter, getEventName);\n});\n\n// Trigger an event and/or a corresponding method name. Examples:\n//\n// `this.triggerMethod(\"foo\")` will trigger the \"foo\" event and\n// call the \"onFoo\" method.\n//\n// `this.triggerMethod(\"foo:bar\")` will trigger the \"foo:bar\" event and\n// call the \"onFooBar\" method.\nexport function triggerMethod(event, ...args) {\n  // get the method name from the event name\n  const methodName = getOnMethodName(event);\n  const method = getOption.call(this, methodName);\n  let result;\n\n  // call the onMethodName if it exists\n  if (_.isFunction(method)) {\n    // pass all args, except the event name\n    result = method.apply(this, args);\n  }\n\n  // trigger the event\n  this.trigger.apply(this, arguments);\n\n  return result;\n}\n\n// triggerMethodOn invokes triggerMethod on a specific context\n//\n// e.g. `Marionette.triggerMethodOn(view, 'show')`\n// will trigger a \"show\" event or invoke onShow the view.\nexport function triggerMethodOn(context, ...args) {\n  if (_.isFunction(context.triggerMethod)) {\n    return context.triggerMethod.apply(context, args);\n  }\n\n  return triggerMethod.apply(context, args);\n}\n","// DOM Refresh\n// -----------\n\nimport _ from 'underscore';\nimport { triggerMethodOn } from './trigger-method';\n\n// Trigger method on children unless a pure Backbone.View\nfunction triggerMethodChildren(view, event, shouldTrigger) {\n  if (!view._getImmediateChildren) { return; }\n  _.each(view._getImmediateChildren(), child => {\n    if (!shouldTrigger(child)) { return; }\n    triggerMethodOn(child, event, child);\n  });\n}\n\nfunction shouldTriggerAttach(view) {\n  return !view._isAttached;\n}\n\nfunction shouldAttach(view) {\n  if (!shouldTriggerAttach(view)) { return false; }\n  view._isAttached = true;\n  return true;\n}\n\nfunction shouldTriggerDetach(view) {\n  return view._isAttached;\n}\n\nfunction shouldDetach(view) {\n  if (!shouldTriggerDetach(view)) { return false; }\n  view._isAttached = false;\n  return true;\n}\n\nfunction triggerDOMRefresh(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:refresh', view);\n  }\n}\n\nfunction triggerDOMRemove(view) {\n  if (view._isAttached && view._isRendered) {\n    triggerMethodOn(view, 'dom:remove', view);\n  }\n}\n\nfunction handleBeforeAttach() {\n  triggerMethodChildren(this, 'before:attach', shouldTriggerAttach);\n}\n\nfunction handleAttach() {\n  triggerMethodChildren(this, 'attach', shouldAttach);\n  triggerDOMRefresh(this);\n}\n\nfunction handleBeforeDetach() {\n  triggerMethodChildren(this, 'before:detach', shouldTriggerDetach);\n  triggerDOMRemove(this);\n}\n\nfunction handleDetach() {\n  triggerMethodChildren(this, 'detach', shouldDetach);\n}\n\nfunction handleBeforeRender() {\n  triggerDOMRemove(this);\n}\n\nfunction handleRender() {\n  triggerDOMRefresh(this);\n}\n\n// Monitor a view's state, propagating attach/detach events to children and firing dom:refresh\n// whenever a rendered view is attached or an attached view is rendered.\nfunction monitorViewEvents(view) {\n  if (view._areViewEventsMonitored || view.monitorViewEvents === false) { return; }\n\n  view._areViewEventsMonitored = true;\n\n  view.on({\n    'before:attach': handleBeforeAttach,\n    'attach': handleAttach,\n    'before:detach': handleBeforeDetach,\n    'detach': handleDetach,\n    'before:render': handleBeforeRender,\n    'render': handleRender\n  });\n}\n\nexport default monitorViewEvents;\n","// Bind Entity Events & Unbind Entity Events\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone \"entity\" (e.g. collection/model)\n// to methods on a target object.\n//\n// The first parameter, `target`, must have the Backbone.Events module mixed in.\n//\n// The second parameter is the `entity` (Backbone.Model, Backbone.Collection or\n// any object that has Backbone.Events mixed in) to bind the events from.\n//\n// The third parameter is a hash of { \"event:name\": \"eventHandler\" }\n// configuration. Multiple handlers can be separated by a space. A\n// function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\n\n// Bind/unbind the event to handlers specified as a string of\n// handler names on the target object\nfunction bindFromStrings(target, entity, evt, methods, actionName) {\n  const methodNames = methods.split(/\\s+/);\n\n  if (methodNames.length > 1) {\n    deprecate('Multiple handlers for a single event are deprecated. If needed, use a single handler to call multiple methods.')\n  }\n\n  _.each(methodNames, function(methodName) {\n    const method = target[methodName];\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was configured as an event handler, but does not exist.`);\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\n// generic looping function\nfunction iterateEvents(target, entity, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindevents'\n    });\n  }\n\n  // iterate the bindings and bind/unbind them\n  _.each(bindings, function(method, evt) {\n\n    // allow for a list of method names as a string\n    if (_.isString(method)) {\n      bindFromStrings(target, entity, evt, method, actionName);\n      return;\n    }\n\n    target[actionName](entity, evt, method);\n  });\n}\n\nfunction bindEvents(entity, bindings) {\n  if (!entity || !bindings) { return this; }\n\n  iterateEvents(this, entity, bindings, 'listenTo');\n  return this;\n}\n\nfunction unbindEvents(entity, bindings) {\n  if (!entity) { return this; }\n\n  if (!bindings) {\n    this.stopListening(entity);\n    return this;\n  }\n\n  iterateEvents(this, entity, bindings, 'stopListening');\n  return this;\n}\n\n// Export Public API\nexport {\n  bindEvents,\n  unbindEvents\n};\n","// Bind/Unbind Radio Requests\n// -----------------------------------------\n//\n// These methods are used to bind/unbind a backbone.radio request\n// to methods on a target object.\n//\n// The first parameter, `target`, will set the context of the reply method\n//\n// The second parameter is the `Radio.channel` to bind the reply to.\n//\n// The third parameter is a hash of { \"request:name\": \"replyHandler\" }\n// configuration. A function can be supplied instead of a string handler name.\n\nimport _ from 'underscore';\nimport normalizeMethods from './normalize-methods';\nimport MarionetteError from '../error';\n\nfunction iterateReplies(target, channel, bindings, actionName) {\n  // type-check bindings\n  if (!_.isObject(bindings)) {\n    throw new MarionetteError({\n      message: 'Bindings must be an object.',\n      url: 'marionette.functions.html#marionettebindrequests'\n    });\n  }\n\n  const normalizedRadioRequests = normalizeMethods.call(target, bindings);\n\n  channel[actionName](normalizedRadioRequests, target);\n}\n\nfunction bindRequests(channel, bindings) {\n  if (!channel || !bindings) { return this; }\n\n  iterateReplies(this, channel, bindings, 'reply');\n  return this;\n}\n\nfunction unbindRequests(channel, bindings) {\n  if (!channel) { return this; }\n\n  if (!bindings) {\n    channel.stopReplying(null, null, this);\n    return this;\n  }\n\n  iterateReplies(this, channel, bindings, 'stopReplying');\n  return this;\n}\n\nexport {\n  bindRequests,\n  unbindRequests\n};\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport { triggerMethod } from '../common/trigger-method';\nimport Marionette from '../backbone.marionette';\n\n// MixinOptions\n// - behaviors\n\n// Takes care of getting the behavior class\n// given options and a key.\n// If a user passes in options.behaviorClass\n// default to using that.\n// If a user passes in a Behavior Class directly, use that\n// Otherwise delegate the lookup to the users `behaviorsLookup` implementation.\nfunction getBehaviorClass(options, key) {\n  if (options.behaviorClass) {\n    return options.behaviorClass;\n    //treat functions as a Behavior constructor\n  } else if (_.isFunction(options)) {\n    return options;\n  }\n\n  // behaviorsLookup can be either a flat object or a method\n  if (_.isFunction(Marionette.Behaviors.behaviorsLookup)) {\n    return Marionette.Behaviors.behaviorsLookup(options, key)[key];\n  }\n\n  return Marionette.Behaviors.behaviorsLookup[key];\n}\n\n// Iterate over the behaviors object, for each behavior\n// instantiate it and get its grouped behaviors.\n// This accepts a list of behaviors in either an object or array form\nfunction parseBehaviors(view, behaviors) {\n  return _.chain(behaviors).map(function(options, key) {\n    const BehaviorClass = getBehaviorClass(options, key);\n    //if we're passed a class directly instead of an object\n    const _options = options === BehaviorClass ? {} : options;\n    const behavior = new BehaviorClass(_options, view);\n    const nestedBehaviors = parseBehaviors(view, _.result(behavior, 'behaviors'));\n\n    return [behavior].concat(nestedBehaviors);\n  }).flatten().value();\n}\n\nexport default {\n  _initBehaviors() {\n    this._behaviors = this._getBehaviors();\n  },\n\n  _getBehaviors() {\n    const behaviors = _.result(this, 'behaviors');\n\n    // Behaviors defined on a view can be a flat object literal\n    // or it can be a function that returns an object.\n    return _.isObject(behaviors) ? parseBehaviors(this, behaviors) : {};\n  },\n\n  _getBehaviorTriggers() {\n    const triggers = _invoke(this._behaviors, 'getTriggers');\n    return _.reduce(triggers, function(memo, _triggers) {\n      return _.extend(memo, _triggers);\n    }, {});\n  },\n\n  _getBehaviorEvents() {\n    const events = _invoke(this._behaviors, 'getEvents');\n    return _.reduce(events, function(memo, _events) {\n      return _.extend(memo, _events);\n    }, {});\n  },\n\n  // proxy behavior $el to the view's $el.\n  _proxyBehaviorViewProperties() {\n    _invoke(this._behaviors, 'proxyViewProperties');\n  },\n\n  // delegate modelEvents and collectionEvents\n  _delegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'delegateEntityEvents');\n  },\n\n  // undelegate modelEvents and collectionEvents\n  _undelegateBehaviorEntityEvents() {\n    _invoke(this._behaviors, 'undelegateEntityEvents');\n  },\n\n  _destroyBehaviors(...args) {\n    // Call destroy on each behavior after\n    // destroying the view.\n    // This unbinds event listeners\n    // that behaviors have registered for.\n    _invoke(this._behaviors, 'destroy', ...args);\n  },\n\n  // Remove a behavior\n  _removeBehavior(behavior) {\n    // Don't worry about the clean up if the view is destroyed\n    if (this._isDestroyed) { return; }\n\n    // Remove behavior-only triggers and events\n    this.undelegate(`.trig${ behavior.cid } .${ behavior.cid }`);\n\n    this._behaviors = _.without(this._behaviors, behavior);\n  },\n\n  _bindBehaviorUIElements() {\n    _invoke(this._behaviors, 'bindUIElements');\n  },\n\n  _unbindBehaviorUIElements() {\n    _invoke(this._behaviors, 'unbindUIElements');\n  },\n\n  _triggerEventOnBehaviors() {\n    const behaviors = this._behaviors;\n    // Use good ol' for as this is a very hot function\n    for (let i = 0, length = behaviors && behaviors.length; i < length; i++) {\n      triggerMethod.apply(behaviors[i], arguments);\n    }\n  }\n};\n","// Add Feature flags here\n// e.g. 'class' => false\nconst FEATURES = {\n  childViewEventPrefix: true,\n  triggersStopPropagation: true,\n  triggersPreventDefault: true\n};\n\nfunction isEnabled(name) {\n  return !!FEATURES[name];\n}\n\nfunction setEnabled(name, state) {\n  return FEATURES[name] = state;\n}\n\nexport {\n  FEATURES,\n  setEnabled,\n  isEnabled\n};\n","import _ from 'underscore';\nimport getNamespacedEventName from '../utils/get-namespaced-event-name';\nimport { isEnabled } from '../config/features';\n\n// Internal method to create an event handler for a given `triggerDef` like\n// 'click:foo'\nfunction buildViewTrigger(view, triggerDef) {\n  if (_.isString(triggerDef)) {\n    triggerDef = {event: triggerDef};\n  }\n\n  const eventName = triggerDef.event;\n\n  let shouldPreventDefault = !!triggerDef.preventDefault;\n\n  if (isEnabled('triggersPreventDefault')) {\n    shouldPreventDefault = triggerDef.preventDefault !== false;\n  }\n\n  let shouldStopPropagation = !!triggerDef.stopPropagation;\n\n  if (isEnabled('triggersStopPropagation')) {\n    shouldStopPropagation = triggerDef.stopPropagation !== false;\n  }\n\n  return function(event) {\n    if (shouldPreventDefault) {\n      event.preventDefault();\n    }\n\n    if (shouldStopPropagation) {\n      event.stopPropagation();\n    }\n\n    view.triggerMethod(eventName, view, event);\n  };\n}\n\nexport default {\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  _getViewTriggers(view, triggers) {\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return _.reduce(triggers, (events, value, key) => {\n      key = getNamespacedEventName(key, `trig${ this.cid }`);\n      events[key] = buildViewTrigger(view, value);\n      return events;\n    }, {});\n  }\n\n};\n","// DomApi\n//  ---------\nimport _ from 'underscore';\nimport Backbone from 'backbone';\n\n// Performant method for returning the jQuery instance\nfunction getEl(el) {\n  return el instanceof Backbone.$ ? el : Backbone.$(el);\n}\n\n// Static setter\nexport function setDomApi(mixin) {\n  this.prototype.Dom = _.extend({}, this.prototype.Dom, mixin);\n  return this;\n}\n\nexport default {\n\n  // Returns a new HTML DOM node instance\n  createBuffer() {\n    return document.createDocumentFragment();\n  },\n\n  // Lookup the `selector` string\n  // Selector may also be a DOM element\n  // Returns an array-like object of nodes\n  getEl(selector) {\n    return getEl(selector);\n  },\n\n  // Finds the `selector` string with the el\n  // Returns an array-like object of nodes\n  findEl(el, selector, _$el = getEl(el)) {\n    return _$el.find(selector);\n  },\n\n  // Returns true if the el contains the node childEl\n  hasEl(el, childEl) {\n    return el.contains(childEl && childEl.parentNode);\n  },\n\n  // Detach `el` from the DOM without removing listeners\n  detachEl(el, _$el = getEl(el)) {\n    _$el.detach();\n  },\n\n  // Remove `oldEl` from the DOM and put `newEl` in its place\n  replaceEl(newEl, oldEl) {\n    if (newEl === oldEl) {\n      return;\n    }\n\n    const parent = oldEl.parentNode;\n\n    if (!parent) {\n      return;\n    }\n\n    parent.replaceChild(newEl, oldEl);\n  },\n\n  // Swaps the location of `el1` and `el2` in the DOM\n  swapEl(el1, el2) {\n    if (el1 === el2) {\n      return;\n    }\n\n    const parent1 = el1.parentNode;\n    const parent2 = el2.parentNode;\n\n    if (!parent1 || !parent2) {\n      return;\n    }\n\n    const next1 = el1.nextSibling;\n    const next2 = el2.nextSibling;\n\n    parent1.insertBefore(el2, next1);\n    parent2.insertBefore(el1, next2);\n  },\n\n  // Replace the contents of `el` with the HTML string of `html`\n  setContents(el, html, _$el = getEl(el)) {\n    _$el.html(html);\n  },\n\n  // Takes the DOM node `el` and appends the DOM node `contents`\n  // to the end of the element's contents.\n  appendContents(el, contents, {_$el = getEl(el), _$contents = getEl(contents)} = {}) {\n    _$el.append(_$contents);\n  },\n\n  // Does the el have child nodes\n  hasContents(el) {\n    return !!el && el.hasChildNodes();\n  },\n\n  // Remove the inner contents of `el` from the DOM while leaving\n  // `el` itself in the DOM.\n  detachContents(el, _$el = getEl(el)) {\n    _$el.contents().detach();\n  }\n};\n","import { triggerMethodOn } from '../common/trigger-method';\n\nexport function renderView(view) {\n  if (view._isRendered) {\n    return;\n  }\n\n  if (!view.supportsRenderLifecycle) {\n    triggerMethodOn(view, 'before:render', view);\n  }\n\n  view.render();\n\n  if (!view.supportsRenderLifecycle) {\n    view._isRendered = true;\n    triggerMethodOn(view, 'render', view);\n  }\n}\n\nexport function destroyView(view) {\n  if (view.destroy) {\n    view.destroy();\n    return;\n  }\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'before:destroy', view);\n  }\n\n  const shouldTriggerDetach = view._isAttached && !view._shouldDisableEvents;\n\n  if (shouldTriggerDetach) {\n    triggerMethodOn(view, 'before:detach', view);\n  }\n\n  view.remove();\n\n  if (shouldTriggerDetach) {\n    view._isAttached = false;\n    triggerMethodOn(view, 'detach', view);\n  }\n\n  view._isDestroyed = true;\n\n  if (!view.supportsDestroyLifecycle) {\n    triggerMethodOn(view, 'destroy', view);\n  }\n}\n","import _ from 'underscore';\nimport deprecate from '../utils/deprecate';\nimport MarionetteError from '../error';\nimport Region from '../region';\n\n// return the region instance from the definition\nexport default function(definition, defaults) {\n  if (definition instanceof Region) {\n    return definition;\n  }\n\n  return buildRegionFromDefinition(definition, defaults);\n}\n\nfunction buildRegionFromDefinition(definition, defaults) {\n  const opts = _.extend({}, defaults);\n\n  if (_.isString(definition)) {\n    _.extend(opts, { el: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isFunction(definition)) {\n    _.extend(opts, { regionClass: definition });\n\n    return buildRegionFromObject(opts);\n  }\n\n  if (_.isObject(definition)) {\n    if (definition.selector) {\n      deprecate('The selector option on a Region definition object is deprecated. Use el to pass a selector string');\n    }\n\n    _.extend(opts, { el: definition.selector }, definition);\n\n    return buildRegionFromObject(opts);\n  }\n\n  throw new MarionetteError({\n    message: 'Improper region configuration type.',\n    url: 'marionette.region.html#region-configuration-types'\n  });\n}\n\nfunction buildRegionFromObject(definition) {\n  const RegionClass = definition.regionClass\n\n  const options = _.omit(definition, 'regionClass');\n\n  return new RegionClass(options);\n}\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function() {\n  this._init();\n};\n\nemulateCollection(Container.prototype, '_views');\n\nfunction stringComparator(comparator, view) {\n  return view.model && view.model.get(comparator);\n}\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  // Initializes an empty container\n  _init() {\n    this._views = [];\n    this._viewsByCid = {};\n    this._indexByModel = {};\n    this._updateLength();\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Additionally it stores\n  // the view by index in the _views array\n  _add(view, index = this._views.length) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._viewsByCid[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // add to end by default\n    this._views.splice(index, 0, view);\n\n    this._updateLength();\n  },\n\n  // Sort (mutate) and return the array of the child views.\n  _sort(comparator, context) {\n    if (typeof comparator === 'string') {\n      comparator = _.partial(stringComparator, comparator);\n      return this._sortBy(comparator);\n    }\n\n    if (comparator.length === 1) {\n      return this._sortBy(_.bind(comparator, context));\n    }\n\n    return this._views.sort(_.bind(comparator, context));\n  },\n\n  // Makes `_.sortBy` mutate the array to match `this._views.sort`\n  _sortBy(comparator) {\n    const sortedViews = _.sortBy(this._views, comparator);\n\n    this._set(sortedViews);\n\n    return sortedViews;\n  },\n\n  // Replace array contents without overwriting the reference.\n  _set(views) {\n    this._views.length = 0;\n\n    this._views.push.apply(this._views, views.slice(0));\n\n    this._updateLength();\n  },\n\n  // Swap views by index\n  _swap(view1, view2) {\n    const view1Index = this.findIndexByView(view1);\n    const view2Index = this.findIndexByView(view2);\n\n    if (view1Index === -1 || view2Index === -1) {\n      return;\n    }\n\n    const swapView = this._views[view1Index];\n    this._views[view1Index] = this._views[view2Index];\n    this._views[view2Index] = swapView;\n  },\n\n  // Find a view by the model that was attached to it.\n  // Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to it.\n  // Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by index.\n  findByIndex(index) {\n    return this._views[index];\n  },\n\n  // Find the index of a view instance\n  findIndexByView(view) {\n    return this._views.indexOf(view);\n  },\n\n  // Retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._viewsByCid[cid];\n  },\n\n  hasView(view) {\n    return !!this.findByCid(view.cid);\n  },\n\n  // Remove a view and clean up index references.\n  _remove(view) {\n    if (!this._viewsByCid[view.cid]) {\n      return;\n    }\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // remove the view from the container\n    delete this._viewsByCid[view.cid];\n\n    const index = this.findIndexByView(view);\n    this._views.splice(index, 1);\n\n    this._updateLength();\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = this._views.length;\n  }\n});\n\nexport default Container;\n","//Internal utility for creating context style global utils\nconst proxy = function(method) {\n  return function(context, ...args) {\n    return method.apply(context, args);\n  };\n};\n\nexport default proxy;\n","// Marionette.extend\n// -----------------\n\nimport Backbone from 'backbone';\n\n// Borrow the Backbone `extend` method so we can use it as needed\nconst extend = Backbone.Model.extend;\n\nexport default extend;\n","/* global console */\n\nimport _ from 'underscore';\n\nimport Marionette from '../backbone.marionette';\n\nconst deprecate = function(message, test) {\n  if (_.isObject(message)) {\n    message = (\n      message.prev + ' is going to be removed in the future. ' +\n      'Please use ' + message.next + ' instead.' +\n      (message.url ? ' See: ' + message.url : '')\n    );\n  }\n\n  if (!Marionette.DEV_MODE) {\n    return;\n  }\n\n  if ((test === undefined || !test) && !deprecate._cache[message]) {\n    deprecate._warn('Deprecation warning: ' + message);\n    deprecate._cache[message] = true;\n  }\n};\n\n/* istanbul ignore next: can't clear console */\ndeprecate._console = typeof console !== 'undefined' ? console : {};\ndeprecate._warn = function() {\n  const warn = deprecate._console.warn || deprecate._console.log || _.noop;\n  return warn.apply(deprecate._console, arguments);\n};\ndeprecate._cache = {};\n\nexport default deprecate;\n","// Marionette.isNodeAttached\n// -------------------------\n\n// Determine if `el` is a child of the document\nconst isNodeAttached = function(el) {\n  return document.documentElement.contains(el && el.parentNode);\n};\n\nexport default isNodeAttached;\n","import _ from 'underscore';\n\n// Merge `keys` from `options` onto `this`\nconst mergeOptions = function(options, keys) {\n  if (!options) { return; }\n\n  _.each(keys, (key) => {\n    const option = options[key];\n    if (option !== undefined) {\n      this[key] = option;\n    }\n  });\n};\n\nexport default mergeOptions;\n","// Marionette.getOption\n// --------------------\n\n// Retrieve an object, function or other value from the\n// object or its `options`, with `options` taking precedence.\nconst getOption = function(optionName) {\n  if (!optionName) { return; }\n  if (this.options && (this.options[optionName] !== undefined)) {\n    return this.options[optionName];\n  } else {\n    return this[optionName];\n  }\n};\n\nexport default getOption;\n","import _ from 'underscore';\n\n// Marionette.normalizeMethods\n// ----------------------\n\n// Pass in a mapping of events => functions or function names\n// and return a mapping of events => functions\nconst normalizeMethods = function(hash) {\n  return _.reduce(hash, (normalizedHash, method, name) => {\n    if (!_.isFunction(method)) {\n      method = this[method];\n    }\n    if (method) {\n      normalizedHash[name] = method;\n    }\n    return normalizedHash;\n  }, {});\n};\n\nexport default normalizeMethods;\n","// Error\n// -----\n\nimport _ from 'underscore';\nimport extend from './utils/extend';\nimport {version} from '../package.json';\n\nconst errorProps = ['description', 'fileName', 'lineNumber', 'name', 'message', 'number'];\n\nconst MarionetteError = extend.call(Error, {\n  urlRoot: `http://marionettejs.com/docs/v${version}/`,\n\n  constructor(message, options) {\n    if (_.isObject(message)) {\n      options = message;\n      message = options.message;\n    } else if (!options) {\n      options = {};\n    }\n\n    const error = Error.call(this, message);\n    _.extend(this, _.pick(error, errorProps), _.pick(options, errorProps));\n\n    this.captureStackTrace();\n\n    if (options.url) {\n      this.url = this.urlRoot + options.url;\n    }\n  },\n\n  captureStackTrace() {\n    if (Error.captureStackTrace) {\n      Error.captureStackTrace(this, MarionetteError);\n    }\n  },\n\n  toString() {\n    return this.name + ': ' + this.message + (this.url ? ' See: ' + this.url : '');\n  }\n});\n\nMarionetteError.extend = extend;\n\nexport default MarionetteError;\n","import _ from 'underscore';\n\n// Internal utility for setting options consistently across Mn\nconst setOptions = function(options) {\n  this.options = _.extend({}, _.result(this, 'options'), options);\n};\n\nexport default setOptions;\n","import _setOptions from '../utils/set-options';\nimport getOption from '../common/get-option';\nimport mergeOptions from '../common/merge-options';\nimport normalizeMethods from '../common/normalize-methods';\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nexport default {\n\n  // Imports the \"normalizeMethods\" to transform hashes of\n  // events=>function references/names to a hash of events=>function references\n  normalizeMethods,\n\n  _setOptions,\n\n  // A handy way to merge passed-in options onto the instance\n  mergeOptions,\n\n  // Enable getting options from this or this.options by name.\n  getOption,\n\n  // Enable binding view's events from another entity.\n  bindEvents,\n\n  // Enable unbinding view's events from another entity.\n  unbindEvents\n};\n","import _ from 'underscore';\nimport Radio from 'backbone.radio';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from '../common/bind-requests';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\nimport MarionetteError from '../error';\n\n// MixinOptions\n// - channelName\n// - radioEvents\n// - radioRequests\n\nexport default {\n\n  _initRadio() {\n    const channelName = _.result(this, 'channelName');\n\n    if (!channelName) {\n      return;\n    }\n\n    /* istanbul ignore next */\n    if (!Radio) {\n      throw new MarionetteError({\n        name: 'BackboneRadioMissing',\n        message: 'The dependency \"backbone.radio\" is missing.'\n      });\n    }\n\n    const channel = this._channel = Radio.channel(channelName);\n\n    const radioEvents = _.result(this, 'radioEvents');\n    this.bindEvents(channel, radioEvents);\n\n    const radioRequests = _.result(this, 'radioRequests');\n    this.bindRequests(channel, radioRequests);\n\n    this.on('destroy', this._destroyRadio);\n  },\n\n  _destroyRadio() {\n    this._channel.stopReplying(null, null, this);\n  },\n\n  getChannel() {\n    return this._channel;\n  },\n\n  // Proxy `bindEvents`\n  bindEvents: bindEvents,\n\n  // Proxy `unbindEvents`\n  unbindEvents: unbindEvents,\n\n  // Proxy `bindRequests`\n  bindRequests: bindRequests,\n\n  // Proxy `unbindRequests`\n  unbindRequests: unbindRequests\n\n};\n","// Object\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport extend from './utils/extend';\nimport { triggerMethod } from './common/trigger-method';\nimport CommonMixin from './mixins/common';\nimport RadioMixin from './mixins/radio';\n\nconst ClassOptions = [\n  'channelName',\n  'radioEvents',\n  'radioRequests'\n];\n\n// A Base Class that other Classes should descend from.\n// Object borrows many conventions and utilities from Backbone.\nconst MarionetteObject = function(options) {\n  if (!this.hasOwnProperty('options')) {\n    this._setOptions(options);\n  }\n  this.mergeOptions(options, ClassOptions);\n  this._setCid();\n  this._initRadio();\n  this.initialize.apply(this, arguments);\n};\n\nMarionetteObject.extend = extend;\n\n// Object Methods\n// --------------\n\n// Ensure it can trigger events with Backbone.Events\n_.extend(MarionetteObject.prototype, Backbone.Events, CommonMixin, RadioMixin, {\n  cidPrefix: 'mno',\n\n  // for parity with Marionette.AbstractView lifecyle\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return this._isDestroyed;\n  },\n\n  //this is a noop method intended to be overridden by classes that extend from this base\n  initialize() {},\n\n  _setCid() {\n    if (this.cid) { return; }\n    this.cid = _.uniqueId(this.cidPrefix);\n  },\n\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:destroy', this, ...args);\n\n    this._isDestroyed = true;\n    this.triggerMethod('destroy', this, ...args);\n    this.stopListening();\n\n    return this;\n  },\n\n  triggerMethod\n});\n\nexport default MarionetteObject;\n","// Template Cache\n// --------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport MarionetteError from './error';\n\n// Manage templates stored in `<script>` blocks,\n// caching them for faster access.\nconst TemplateCache = function(templateId) {\n  this.templateId = templateId;\n};\n\n// TemplateCache object-level methods. Manage the template\n// caches from these method calls instead of creating\n// your own TemplateCache instances\n_.extend(TemplateCache, {\n\n  templateCaches: {},\n\n  // Get the specified template by id. Either\n  // retrieves the cached version, or loads it\n  // from the DOM.\n  get(templateId, options) {\n    let cachedTemplate = this.templateCaches[templateId];\n\n    if (!cachedTemplate) {\n      cachedTemplate = new TemplateCache(templateId);\n      this.templateCaches[templateId] = cachedTemplate;\n    }\n\n    return cachedTemplate.load(options);\n  },\n\n  // Clear templates from the cache. If no arguments\n  // are specified, clears all templates:\n  // `clear()`\n  //\n  // If arguments are specified, clears each of the\n  // specified templates from the cache:\n  // `clear(\"#t1\", \"#t2\", \"...\")`\n  clear(...args) {\n    let i;\n    const length = args.length;\n\n    if (length > 0) {\n      for (i = 0; i < length; i++) {\n        delete this.templateCaches[args[i]];\n      }\n    } else {\n      this.templateCaches = {};\n    }\n  }\n});\n\n// TemplateCache instance methods, allowing each\n// template cache object to manage its own state\n// and know whether or not it has been loaded\n_.extend(TemplateCache.prototype, {\n\n  // Internal method to load the template\n  load(options) {\n    // Guard clause to prevent loading this template more than once\n    if (this.compiledTemplate) {\n      return this.compiledTemplate;\n    }\n\n    // Load the template and compile it\n    const template = this.loadTemplate(this.templateId, options);\n    this.compiledTemplate = this.compileTemplate(template, options);\n\n    return this.compiledTemplate;\n  },\n\n  // Load a template from the DOM, by default. Override\n  // this method to provide your own template retrieval\n  // For asynchronous loading with AMD/RequireJS, consider\n  // using a template-loader plugin as described here:\n  // https://github.com/marionettejs/backbone.marionette/wiki/Using-marionette-with-requirejs\n  loadTemplate(templateId, options) {\n    const $template = Backbone.$(templateId);\n\n    if (!$template.length) {\n      throw new MarionetteError({\n        name: 'NoTemplateError',\n        message: `Could not find template: \"${templateId}\"`\n      });\n    }\n    return $template.html();\n  },\n\n  // Pre-compile the template before caching it. Override\n  // this method if you do not need to pre-compile a template\n  // (JST / RequireJS for example) or if you want to change\n  // the template engine used (Handebars, etc).\n  compileTemplate(rawTemplate, options) {\n    return _.template(rawTemplate, options);\n  }\n});\n\nexport default TemplateCache;\n","// Implementation of the invoke method (http://underscorejs.org/#invoke) with support for\n// lodash v3, v4, and underscore.js\nimport _ from 'underscore';\n\nexport default _.invokeMap || _.invoke;\n","import _ from 'underscore';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from '../common/bind-events';\n\n// MixinOptions\n// - collectionEvents\n// - modelEvents\n\nexport default {\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  _delegateEntityEvents(model, collection) {\n    const modelEvents = _.result(this, 'modelEvents');\n\n    if (modelEvents) {\n      unbindEvents.call(this, model, modelEvents);\n      bindEvents.call(this, model, modelEvents);\n    }\n\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n\n    if (collectionEvents) {\n      unbindEvents.call(this, collection, collectionEvents);\n      bindEvents.call(this, collection, collectionEvents);\n    }\n  },\n\n  _undelegateEntityEvents(model, collection) {\n    const modelEvents = _.result(this, 'modelEvents');\n    unbindEvents.call(this, model, modelEvents);\n\n    const collectionEvents = _.result(this, 'collectionEvents');\n    unbindEvents.call(this, collection, collectionEvents);\n  }\n};\n","// Borrow event splitter from Backbone\nconst delegateEventSplitter = /^(\\S+)\\s*(.*)$/;\n\n// Set event name to be namespaced using a unique index\n// to generate a non colliding event namespace\n// http://api.jquery.com/event.namespace/\nconst getNamespacedEventName = function(eventName, namespace) {\n  const match = eventName.match(delegateEventSplitter);\n  return `${ match[1] }.${ namespace } ${ match[2] }`;\n};\n\nexport default getNamespacedEventName;\n","import _ from 'underscore';\n// allows for the use of the @ui. syntax within\n// a given key for triggers and events\n// swaps the @ui with the associated selector.\n// Returns a new, non-mutated, parsed events hash.\nconst normalizeUIKeys = function(hash, ui) {\n  return _.reduce(hash, (memo, val, key) => {\n    const normalizedKey = normalizeUIString(key, ui);\n    memo[normalizedKey] = val;\n    return memo;\n  }, {});\n};\n\n// utility method for parsing @ui. syntax strings\n// into associated selector\nconst normalizeUIString = function(uiString, ui) {\n  return uiString.replace(/@ui\\.[a-zA-Z-_$0-9]*/g, (r) => {\n    return ui[r.slice(4)];\n  });\n};\n\n// allows for the use of the @ui. syntax within\n// a given value for regions\n// swaps the @ui with the associated selector\nconst normalizeUIValues = function(hash, ui, properties) {\n  _.each(hash, (val, key) => {\n    if (_.isString(val)) {\n      hash[key] = normalizeUIString(val, ui);\n    } else if (_.isObject(val) && _.isArray(properties)) {\n      _.extend(val, normalizeUIValues(_.pick(val, properties), ui));\n      /* Value is an object, and we got an array of embedded property names to normalize. */\n      _.each(properties, (property) => {\n        const propertyVal = val[property];\n        if (_.isString(propertyVal)) {\n          val[property] = normalizeUIString(propertyVal, ui);\n        }\n      });\n    }\n  });\n  return hash;\n};\n\nexport default {\n\n  // normalize the keys of passed hash with the views `ui` selectors.\n  // `{\"@ui.foo\": \"bar\"}`\n  normalizeUIKeys(hash) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIKeys(hash, uiBindings);\n  },\n\n  // normalize the passed string with the views `ui` selectors.\n  // `\"@ui.bar\"`\n  normalizeUIString(uiString) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIString(uiString, uiBindings);\n  },\n\n  // normalize the values of passed hash with the views `ui` selectors.\n  // `{foo: \"@ui.bar\"}`\n  normalizeUIValues(hash, properties) {\n    const uiBindings = this._getUIBindings();\n    return normalizeUIValues(hash, uiBindings, properties);\n  },\n\n  _getUIBindings() {\n    const uiBindings = _.result(this, '_uiBindings');\n    const ui = _.result(this, 'ui');\n    return uiBindings || ui;\n  },\n\n  // This method binds the elements specified in the \"ui\" hash inside the view's code with\n  // the associated jQuery selectors.\n  _bindUIElements() {\n    if (!this.ui) { return; }\n\n    // store the ui hash in _uiBindings so they can be reset later\n    // and so re-rendering the view will be able to find the bindings\n    if (!this._uiBindings) {\n      this._uiBindings = this.ui;\n    }\n\n    // get the bindings result, as a function or otherwise\n    const bindings = _.result(this, '_uiBindings');\n\n    // empty the ui so we don't have anything to start with\n    this._ui = {};\n\n    // bind each of the selectors\n    _.each(bindings, (selector, key) => {\n      this._ui[key] = this.$(selector);\n    });\n\n    this.ui = this._ui;\n  },\n\n  _unbindUIElements() {\n    if (!this.ui || !this._uiBindings) { return; }\n\n    // delete all of the existing ui bindings\n    _.each(this.ui, ($el, name) => {\n      delete this.ui[name];\n    });\n\n    // reset the ui element to the original bindings configuration\n    this.ui = this._uiBindings;\n    delete this._uiBindings;\n    delete this._ui;\n  },\n\n  _getUI(name) {\n    return this._ui[name];\n  }\n};\n","// ViewMixin\n//  ---------\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from '../common/trigger-method';\nimport BehaviorsMixin from './behaviors';\nimport CommonMixin from './common';\nimport DelegateEntityEventsMixin from './delegate-entity-events';\nimport TriggersMixin from './triggers';\nimport UIMixin from './ui';\nimport { isEnabled } from '../config/features';\nimport DomApi from '../config/dom';\n\n// MixinOptions\n// - behaviors\n// - childViewEventPrefix\n// - childViewEvents\n// - childViewTriggers\n// - collectionEvents\n// - modelEvents\n// - triggers\n// - ui\n\n\nconst ViewMixin = {\n  Dom: DomApi,\n\n  supportsRenderLifecycle: true,\n  supportsDestroyLifecycle: true,\n\n  _isDestroyed: false,\n\n  isDestroyed() {\n    return !!this._isDestroyed;\n  },\n\n  _isRendered: false,\n\n  isRendered() {\n    return !!this._isRendered;\n  },\n\n  _isAttached: false,\n\n  isAttached() {\n    return !!this._isAttached;\n  },\n\n  // Overriding Backbone.View's `delegateEvents` to handle\n  // `events` and `triggers`\n  delegateEvents(eventsArg) {\n\n    this._proxyBehaviorViewProperties();\n    this._buildEventProxies();\n\n    const viewEvents = this._getEvents(eventsArg);\n\n    if (typeof eventsArg === 'undefined') {\n      this.events = viewEvents;\n    }\n\n    const combinedEvents = _.extend({},\n      this._getBehaviorEvents(),\n      viewEvents,\n      this._getBehaviorTriggers(),\n      this.getTriggers()\n    );\n\n    Backbone.View.prototype.delegateEvents.call(this, combinedEvents);\n\n    return this;\n  },\n\n  _getEvents(eventsArg) {\n    const events = eventsArg || this.events;\n\n    if (_.isFunction(events)) {\n      return this.normalizeUIKeys(events.call(this));\n    }\n\n    return this.normalizeUIKeys(events);\n  },\n\n  // Configure `triggers` to forward DOM events to view\n  // events. `triggers: {\"click .foo\": \"do:foo\"}`\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Allow `triggers` to be configured as a function\n    const triggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    // Configure the triggers, prevent default\n    // action and stop propagation of DOM events\n    return this._getViewTriggers(this, triggers);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.model, this.collection);\n\n    // bind each behaviors model and collection events\n    this._delegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle unbinding `modelEvents`, and `collectionEvents` configuration\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.model, this.collection);\n\n    // unbind each behaviors model and collection events\n    this._undelegateBehaviorEntityEvents();\n\n    return this;\n  },\n\n  // Handle destroying the view and its children.\n  destroy(...args) {\n    if (this._isDestroyed) { return this; }\n    const shouldTriggerDetach = this._isAttached && !this._shouldDisableEvents;\n\n    this.triggerMethod('before:destroy', this, ...args);\n    if (shouldTriggerDetach) {\n      this.triggerMethod('before:detach', this);\n    }\n\n    // unbind UI elements\n    this.unbindUIElements();\n\n    // remove the view from the DOM\n    this._removeElement();\n\n    if (shouldTriggerDetach) {\n      this._isAttached = false;\n      this.triggerMethod('detach', this);\n    }\n\n    // remove children after the remove to prevent extra paints\n    this._removeChildren();\n\n    this._isDestroyed = true;\n    this._isRendered = false;\n\n    // Destroy behaviors after _isDestroyed flag\n    this._destroyBehaviors(...args);\n\n    this.triggerMethod('destroy', this, ...args);\n\n    this.stopListening();\n\n    return this;\n  },\n\n  // Equates to this.$el.remove\n  _removeElement() {\n    this.$el.off().removeData();\n    this.Dom.detachEl(this.el, this.$el);\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n    this._bindBehaviorUIElements();\n\n    return this;\n  },\n\n  // This method unbinds the elements specified in the \"ui\" hash\n  unbindUIElements() {\n    this._unbindUIElements();\n    this._unbindBehaviorUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // used as the prefix for child view events\n  // that are forwarded through the layoutview\n  childViewEventPrefix() {\n    return isEnabled('childViewEventPrefix') ? 'childview' : false;\n  },\n\n  // import the `triggerMethod` to trigger events with corresponding\n  // methods if the method exists\n  triggerMethod() {\n    const ret = triggerMethod.apply(this, arguments);\n\n    this._triggerEventOnBehaviors.apply(this, arguments);\n\n    return ret;\n  },\n\n  // Cache `childViewEvents` and `childViewTriggers`\n  _buildEventProxies() {\n    this._childViewEvents = _.result(this, 'childViewEvents');\n    this._childViewTriggers = _.result(this, 'childViewTriggers');\n  },\n\n  _proxyChildViewEvents(view) {\n    this.listenTo(view, 'all', this._childViewEventHandler);\n  },\n\n  _childViewEventHandler(eventName, ...args) {\n    const childViewEvents = this.normalizeMethods(this._childViewEvents);\n\n    // call collectionView childViewEvent if defined\n    if (typeof childViewEvents !== 'undefined' && _.isFunction(childViewEvents[eventName])) {\n      childViewEvents[eventName].apply(this, args);\n    }\n\n    // use the parent view's proxyEvent handlers\n    const childViewTriggers = this._childViewTriggers;\n\n    // Call the event with the proxy name on the parent layout\n    if (childViewTriggers && _.isString(childViewTriggers[eventName])) {\n      this.triggerMethod(childViewTriggers[eventName], ...args);\n    }\n\n    const prefix = _.result(this, 'childViewEventPrefix');\n\n    if (prefix !== false) {\n      const childEventName = prefix + ':' + eventName;\n\n      this.triggerMethod(childEventName, ...args);\n    }\n  }\n};\n\n_.extend(ViewMixin, BehaviorsMixin, CommonMixin, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default ViewMixin;\n","// Region\n// ------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport { renderView, destroyView } from './common/view';\nimport monitorViewEvents from './common/monitor-view-events';\nimport isNodeAttached from './common/is-node-attached';\nimport { triggerMethodOn } from './common/trigger-method';\nimport MarionetteObject from './object';\nimport MarionetteError from './error';\nimport View from './view';\nimport DomApi, { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'allowMissingEl',\n  'parentEl',\n  'replaceElement'\n];\n\nconst Region = MarionetteObject.extend({\n  Dom: DomApi,\n\n  cidPrefix: 'mnr',\n  replaceElement: false,\n  _isReplaced: false,\n  _isSwappingView: false,\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    // getOption necessary because options.el may be passed as undefined\n    this._initEl = this.el = this.getOption('el');\n\n    // Handle when this.el is passed in as a $ wrapped element.\n    this.el = this.el instanceof Backbone.$ ? this.el[0] : this.el;\n\n    if (!this.el) {\n      throw new MarionetteError({\n        name: 'NoElError',\n        message: 'An \"el\" must be specified for a region.'\n      });\n    }\n\n    this.$el = this.getEl(this.el);\n    MarionetteObject.call(this, options);\n  },\n\n  // Displays a backbone view instance inside of the region. Handles calling the `render`\n  // method for you. Reads content directly from the `el` attribute. The `preventDestroy`\n  // option can be used to prevent a view from the old view being destroyed on show.\n  show(view, options) {\n    if (!this._ensureElement(options)) {\n      return;\n    }\n\n    view = this._getView(view, options);\n\n    if (view === this.currentView) { return this; }\n\n    this._isSwappingView = !!this.currentView;\n\n    this.triggerMethod('before:show', this, view, options);\n\n    // Assume an attached view is already in the region for pre-existing DOM\n    if (!view._isAttached) {\n      this.empty(options);\n    }\n\n    this._setupChildView(view);\n\n    this.currentView = view;\n\n    renderView(view);\n\n    this._attachView(view, options);\n\n    this.triggerMethod('show', this, view, options);\n\n    this._isSwappingView = false;\n\n    return this;\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    this._proxyChildViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other than through the region.\n    // If this happens we need to remove the reference to the currentView since once a view\n    // has been destroyed we can not reuse it.\n    view.on('destroy', this._empty, this);\n  },\n\n  _proxyChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    parentView._proxyChildViewEvents(view);\n  },\n\n  // If the regions parent view is not monitoring its attach/detach events\n  _shouldDisableMonitoring() {\n    return this._parentView && this._parentView.monitorViewEvents === false;\n  },\n\n  _attachView(view, options = {}) {\n    const shouldTriggerAttach = !view._isAttached && isNodeAttached(this.el) && !this._shouldDisableMonitoring();\n    const shouldReplaceEl = typeof options.replaceElement === 'undefined' ? !!_.result(this, 'replaceElement') : !!options.replaceElement;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    if (shouldReplaceEl) {\n      this._replaceEl(view);\n    } else {\n      this.attachHtml(view);\n    }\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  _ensureElement(options = {}) {\n    if (!_.isObject(this.el)) {\n      this.$el = this.getEl(this.el);\n      this.el = this.$el[0];\n      // Make sure the $el contains only the el\n      this.$el = this.Dom.getEl(this.el);\n    }\n\n    if (!this.$el || this.$el.length === 0) {\n      const allowMissingEl = typeof options.allowMissingEl === 'undefined' ? !!_.result(this, 'allowMissingEl') : !!options.allowMissingEl;\n\n      if (allowMissingEl) {\n        return false;\n      } else {\n        throw new MarionetteError(`An \"el\" must exist in DOM for this region ${this.cid}`);\n      }\n    }\n    return true;\n  },\n\n  _getView(view) {\n    if (!view) {\n      throw new MarionetteError({\n        name: 'ViewNotValid',\n        message: 'The view passed is undefined and therefore invalid. You must pass a view instance to show.'\n      });\n    }\n\n    if (view._isDestroyed) {\n      throw new MarionetteError({\n        name: 'ViewDestroyedError',\n        message: `View (cid: \"${view.cid}\") has already been destroyed and cannot be used.`\n      });\n    }\n\n    if (view instanceof Backbone.View) {\n      return view;\n    }\n\n    const viewOptions = this._getViewOptions(view);\n\n    return new View(viewOptions);\n  },\n\n  // This allows for a template or a static string to be\n  // used as a template\n  _getViewOptions(viewOptions) {\n    if (_.isFunction(viewOptions)) {\n      return { template: viewOptions };\n    }\n\n    if (_.isObject(viewOptions)) {\n      return viewOptions;\n    }\n\n    const template = function() { return viewOptions; };\n\n    return { template };\n  },\n\n  // Override this method to change how the region finds the DOM element that it manages. Return\n  // a jQuery selector object scoped to a provided parent el or the document if none exists.\n  getEl(el) {\n    const context = _.result(this, 'parentEl');\n\n    if (context && _.isString(el)) {\n      return this.Dom.findEl(context, el);\n    }\n\n    return this.Dom.getEl(el);\n  },\n\n  _replaceEl(view) {\n    // always restore the el to ensure the regions el is present before replacing\n    this._restoreEl();\n\n    view.on('before:destroy', this._restoreEl, this);\n\n    this.Dom.replaceEl(view.el, this.el);\n\n    this._isReplaced = true;\n  },\n\n  // Restore the region's element in the DOM.\n  _restoreEl() {\n    // There is nothing to replace\n    if (!this._isReplaced) {\n      return;\n    }\n\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._detachView(view);\n\n    this._isReplaced = false;\n  },\n\n  // Check to see if the region's el was replaced.\n  isReplaced() {\n    return !!this._isReplaced;\n  },\n\n  // Check to see if a view is being swapped by another\n  isSwappingView() {\n    return !!this._isSwappingView;\n  },\n\n  // Override this method to change how the new view is appended to the `$el` that the\n  // region is managing\n  attachHtml(view) {\n    this.Dom.appendContents(this.el, view.el, {_$el: this.$el, _$contents: view.$el});\n  },\n\n  // Destroy the current view, if there is one. If there is no current view, it does\n  // nothing and returns immediately.\n  empty(options = { allowMissingEl: true }) {\n    const view = this.currentView;\n\n    // If there is no view in the region we should only detach current html\n    if (!view) {\n      if (this._ensureElement(options)) {\n        this.detachHtml();\n      }\n      return this;\n    }\n\n    const shouldDestroy = !options.preventDestroy;\n\n    if (!shouldDestroy) {\n      deprecate('The preventDestroy option is deprecated. Use Region#detachView');\n    }\n\n    this._empty(view, shouldDestroy);\n    return this;\n  },\n\n  _empty(view, shouldDestroy) {\n    view.off('destroy', this._empty, this);\n    this.triggerMethod('before:empty', this, view);\n\n    this._restoreEl();\n\n    delete this.currentView;\n\n    if (!view._isDestroyed) {\n      if (shouldDestroy) {\n        this.removeView(view);\n      } else {\n        this._detachView(view);\n      }\n      this._stopChildViewEvents(view);\n    }\n\n    this.triggerMethod('empty', this, view);\n  },\n\n  _stopChildViewEvents(view) {\n    const parentView = this._parentView;\n\n    if (!parentView) { return; }\n\n    this._parentView.stopListening(view);\n  },\n\n  destroyView(view) {\n    if (view._isDestroyed) {\n      return view;\n    }\n\n    view._shouldDisableEvents = this._shouldDisableMonitoring();\n    destroyView(view);\n    return view;\n  },\n\n  removeView(view) {\n    this.destroyView(view);\n  },\n\n  // Empties the Region without destroying the view\n  // Returns the detached view\n  detachView() {\n    const view = this.currentView;\n\n    if (!view) {\n      return;\n    }\n\n    this._empty(view);\n\n    return view;\n  },\n\n  _detachView(view) {\n    const shouldTriggerDetach = view._isAttached && !this._shouldDisableMonitoring();;\n    const shouldRestoreEl = this._isReplaced;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    if (shouldRestoreEl) {\n      this.Dom.replaceEl(this.el, view.el);\n    } else {\n      this.detachHtml();\n    }\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the region detaches current content\n  detachHtml() {\n    this.Dom.detachContents(this.el, this.$el);\n  },\n\n  // Checks whether a view is currently present within the region. Returns `true` if there is\n  // and `false` if no view is present.\n  hasView() {\n    return !!this.currentView;\n  },\n\n  // Reset the region by destroying any existing view and clearing out the cached `$el`.\n  // The next time a view is shown via this region, the region will re-query the DOM for\n  // the region's `el`.\n  reset(options) {\n    this.empty(options);\n\n    if (this.$el) {\n      this.el = this._initEl;\n    }\n\n    delete this.$el;\n    return this;\n  },\n\n  destroy(options) {\n    if (this._isDestroyed) { return this; }\n\n    this.reset(options);\n\n    if (this._name) {\n      this._parentView._removeReferences(this._name);\n    }\n    delete this._parentView;\n    delete this._name;\n\n    return MarionetteObject.prototype.destroy.apply(this, arguments);\n  }\n}, {\n  setDomApi\n});\n\nexport default Region;\n","import _ from 'underscore';\nimport _invoke from '../utils/invoke';\nimport buildRegion from '../common/build-region';\nimport Region from '../region';\n\n// MixinOptions\n// - regions\n// - regionClass\n\nexport default {\n  regionClass: Region,\n\n  // Internal method to initialize the regions that have been defined in a\n  // `regions` attribute on this View.\n  _initRegions() {\n\n    // init regions hash\n    this.regions = this.regions || {};\n    this._regions = {};\n\n    this.addRegions(_.result(this, 'regions'));\n  },\n\n  // Internal method to re-initialize all of the regions by updating\n  // the `el` that they point to\n  _reInitRegions() {\n    _invoke(this._regions, 'reset');\n  },\n\n  // Add a single region, by name, to the View\n  addRegion(name, definition) {\n    const regions = {};\n    regions[name] = definition;\n    return this.addRegions(regions)[name];\n  },\n\n  // Add multiple regions as a {name: definition, name2: def2} object literal\n  addRegions(regions) {\n    // If there's nothing to add, stop here.\n    if (_.isEmpty(regions)) {\n      return;\n    }\n\n    // Normalize region selectors hash to allow\n    // a user to use the @ui. syntax.\n    regions = this.normalizeUIValues(regions, ['selector', 'el']);\n\n    // Add the regions definitions to the regions property\n    this.regions = _.extend({}, this.regions, regions);\n\n    return this._addRegions(regions);\n  },\n\n  // internal method to build and add regions\n  _addRegions(regionDefinitions) {\n    const defaults = {\n      regionClass: this.regionClass,\n      parentEl: _.partial(_.result, this, 'el')\n    };\n\n    return _.reduce(regionDefinitions, (regions, definition, name) => {\n      regions[name] = buildRegion(definition, defaults);\n      this._addRegion(regions[name], name);\n      return regions;\n    }, {});\n  },\n\n  _addRegion(region, name) {\n    this.triggerMethod('before:add:region', this, name, region);\n\n    region._parentView = this;\n    region._name = name;\n\n    this._regions[name] = region;\n\n    this.triggerMethod('add:region', this, name, region);\n  },\n\n  // Remove a single region from the View, by name\n  removeRegion(name) {\n    const region = this._regions[name];\n\n    this._removeRegion(region, name);\n\n    return region;\n  },\n\n  // Remove all regions from the View\n  removeRegions() {\n    const regions = this._getRegions();\n\n    _.each(this._regions, _.bind(this._removeRegion, this));\n\n    return regions;\n  },\n\n  _removeRegion(region, name) {\n    this.triggerMethod('before:remove:region', this, name, region);\n\n    region.destroy();\n\n    this.triggerMethod('remove:region', this, name, region);\n  },\n\n  // Called in a region's destroy\n  _removeReferences(name) {\n    delete this.regions[name];\n    delete this._regions[name];\n  },\n\n  // Empty all regions in the region manager, but\n  // leave them attached\n  emptyRegions() {\n    const regions = this.getRegions();\n    _invoke(regions, 'empty');\n    return regions;\n  },\n\n  // Checks to see if view contains region\n  // Accepts the region name\n  // hasRegion('main')\n  hasRegion(name) {\n    return !!this.getRegion(name);\n  },\n\n  // Provides access to regions\n  // Accepts the region name\n  // getRegion('main')\n  getRegion(name) {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._regions[name];\n  },\n\n  // Get all regions\n  _getRegions() {\n    return _.clone(this._regions);\n  },\n\n  getRegions() {\n    if (!this._isRendered) {\n      this.render();\n    }\n    return this._getRegions();\n  },\n\n  showChildView(name, view, ...args) {\n    const region = this.getRegion(name);\n    return region.show(view, ...args);\n  },\n\n  detachChildView(name) {\n    return this.getRegion(name).detachView();\n  },\n\n  getChildView(name) {\n    return this.getRegion(name).currentView;\n  }\n\n};\n","// Renderer\n// --------\n\nimport _ from 'underscore';\nimport MarionetteError from '../error';\nimport TemplateCache from '../template-cache';\n\n// Render a template with data by passing in the template\n// selector and the data to render.\nconst Renderer = {\n\n  // Render a template with data. The `template` parameter is\n  // passed to the `TemplateCache` object to retrieve the\n  // template function. Override this method to provide your own\n  // custom rendering and template handling for all of Marionette.\n  render(template, data) {\n    if (!template) {\n      throw new MarionetteError({\n        name: 'TemplateNotFoundError',\n        message: 'Cannot render the template since its false, null or undefined.'\n      });\n    }\n\n    const templateFunc = _.isFunction(template) ? template : TemplateCache.get(template);\n\n    return templateFunc(data);\n  }\n};\n\nexport default Renderer;\n","// View\n// ---------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport deprecate from './utils/deprecate';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport ViewMixin from './mixins/view';\nimport RegionsMixin from './mixins/regions';\nimport Renderer from './config/renderer';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'regionClass',\n  'regions',\n  'template',\n  'templateContext',\n  'triggers',\n  'ui'\n];\n\n// The standard view. Includes view events, automatic rendering\n// of Underscore templates, nested views, and more.\nconst View = Backbone.View.extend({\n\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this._initRegions();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Serialize the view's model *or* collection, if\n  // it exists, for the template\n  serializeData() {\n    if (!this.model && !this.collection) {\n      return {};\n    }\n\n    // If we have a model, we serialize that\n    if (this.model) {\n      return this.serializeModel();\n    }\n\n    // Otherwise, we serialize the collection,\n    // making it available under the `items` property\n    return {\n      items: this.serializeCollection()\n    };\n  },\n\n  // Prepares the special `model` property of a view\n  // for being displayed in the template. By default\n  // we simply clone the attributes. Override this if\n  // you need a custom transformation for your view's model\n  serializeModel() {\n    if (!this.model) { return {}; }\n    return _.clone(this.model.attributes);\n  },\n\n  // Serialize a collection by cloning each of\n  // its model's attributes\n  serializeCollection() {\n    if (!this.collection) { return {}; }\n    return this.collection.map(function(model) { return _.clone(model.attributes); });\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // rendered or attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isRendered = this.Dom.hasContents(this.el);\n    this._isAttached = isNodeAttached(this.el);\n\n    if (this._isRendered) {\n      this.bindUIElements();\n    }\n\n    return this;\n  },\n\n  // Render the view, defaulting to underscore.js templates.\n  // You can override this in your view definition to provide\n  // a very specific rendering for your view. In general, though,\n  // you should override the `Marionette.Renderer` object to\n  // change how Marionette renders views.\n  // Subsequent renders after the first will re-render all nested\n  // views.\n  render() {\n    if (this._isDestroyed) { return this; }\n\n    this.triggerMethod('before:render', this);\n\n    // If this is not the first render call, then we need to\n    // re-initialize the `el` for each region\n    if (this._isRendered) {\n      this._reInitRegions();\n    }\n\n    this._renderTemplate();\n    this.bindUIElements();\n\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n\n    return this;\n  },\n\n  // Internal method to render the template with the serialized data\n  // and template context via the `Marionette.Renderer` object.\n  _renderTemplate() {\n    const template = this.getTemplate();\n\n    // Allow template-less views\n    if (template === false) {\n      deprecate('template:false is deprecated.  Use _.noop.');\n      return;\n    }\n\n    // Add in entity data and template context\n    const data = this.mixinTemplateContext(this.serializeData());\n\n    // Render and add to el\n    const html = this._renderHtml(template, data);\n    this.attachElContent(html);\n  },\n\n  // Renders the data into the template\n  _renderHtml(template, data) {\n    return Renderer.render(template, data, this);\n  },\n\n  // Get the template for this view\n  // instance. You can set a `template` attribute in the view\n  // definition or pass a `template: \"whatever\"` parameter in\n  // to the constructor options.\n  getTemplate() {\n    return this.template;\n  },\n\n  // Mix in template context methods. Looks for a\n  // `templateContext` attribute, which can either be an\n  // object literal, or a function that returns an object\n  // literal. All methods and attributes from this object\n  // are copies to the object passed in.\n  mixinTemplateContext(target = {}) {\n    const templateContext = _.result(this, 'templateContext');\n    return _.extend(target, templateContext);\n  },\n\n  // Attaches the content of a given view.\n  // This method can be overridden to optimize rendering,\n  // or to render in a non standard way.\n  //\n  // For example, using `innerHTML` instead of `$el.html`\n  //\n  // ```js\n  // attachElContent(html) {\n  //   this.el.innerHTML = html;\n  //   return this;\n  // }\n  // ```\n  attachElContent(html) {\n    this.Dom.setContents(this.el, html, this.$el);\n\n    return this;\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this.removeRegions();\n  },\n\n  _getImmediateChildren() {\n    return _.chain(this._getRegions())\n      .map('currentView')\n      .compact()\n      .value();\n  }\n}, {\n  // Sets the renderer for the Marionette.View class\n  setRenderer(renderer) {\n    this.prototype._renderHtml = renderer;\n    return this;\n  },\n\n  setDomApi\n});\n\n_.extend(View.prototype, ViewMixin, RegionsMixin);\n\nexport default View;\n","// Mix in methods from Underscore, for iteration, and other\n// collection related features.\n// Borrowing this code from Backbone.Collection:\n// https://github.com/jashkenas/backbone/blob/1.1.2/backbone.js#L962\n\nimport _ from 'underscore';\n\nconst methods = ['forEach', 'each', 'map', 'find', 'detect', 'filter',\n                'select', 'reject', 'every', 'all', 'some', 'any', 'include',\n                'contains', 'invoke', 'toArray', 'first', 'initial', 'rest',\n                'last', 'without', 'isEmpty', 'pluck', 'reduce', 'partition'];\n\nconst emulateCollection = function(object, listProperty) {\n  _.each(methods, function(method) {\n    object[method] = function() {\n      const list = _.result(this, listProperty);\n      const args = Array.prototype.slice.call(arguments);\n      return _[method].apply(_, [list].concat(args));\n    };\n  });\n};\n\nexport default emulateCollection;\n","import _ from 'underscore';\nimport emulateCollection from './utils/emulate-collection';\n\n// Provide a container to store, retrieve and\n// shut down child views.\nconst Container = function(views) {\n  this._views = {};\n  this._indexByModel = {};\n  this._indexByCustom = {};\n  this._updateLength();\n\n  _.each(views, _.bind(this.add, this));\n};\n\nemulateCollection(Container.prototype, '_getViews');\n\n// Container Methods\n// -----------------\n\n_.extend(Container.prototype, {\n\n  _getViews() {\n    return _.values(this._views);\n  },\n\n  // Add a view to this container. Stores the view\n  // by `cid` and makes it searchable by the model\n  // cid (and model itself). Optionally specify\n  // a custom key to store an retrieve the view.\n  add(view, customIndex) {\n    return this._add(view, customIndex)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _add(view, customIndex) {\n    const viewCid = view.cid;\n\n    // store the view\n    this._views[viewCid] = view;\n\n    // index it by model\n    if (view.model) {\n      this._indexByModel[view.model.cid] = viewCid;\n    }\n\n    // index by custom\n    if (customIndex) {\n      this._indexByCustom[customIndex] = viewCid;\n    }\n\n    return this;\n  },\n\n  // Find a view by the model that was attached to\n  // it. Uses the model's `cid` to find it.\n  findByModel(model) {\n    return this.findByModelCid(model.cid);\n  },\n\n  // Find a view by the `cid` of the model that was attached to\n  // it. Uses the model's `cid` to find the view `cid` and\n  // retrieve the view using it.\n  findByModelCid(modelCid) {\n    const viewCid = this._indexByModel[modelCid];\n    return this.findByCid(viewCid);\n  },\n\n  // Find a view by a custom indexer.\n  findByCustom(index) {\n    const viewCid = this._indexByCustom[index];\n    return this.findByCid(viewCid);\n  },\n\n  // Find by index. This is not guaranteed to be a\n  // stable index.\n  findByIndex(index) {\n    return _.values(this._views)[index];\n  },\n\n  // retrieve a view by its `cid` directly\n  findByCid(cid) {\n    return this._views[cid];\n  },\n\n  // Remove a view\n  remove(view) {\n    return this._remove(view)._updateLength();\n  },\n\n  // To be used when avoiding call _updateLength\n  // When you are done adding all your new views\n  // call _updateLength\n  _remove(view) {\n    const viewCid = view.cid;\n\n    // delete model index\n    if (view.model) {\n      delete this._indexByModel[view.model.cid];\n    }\n\n    // delete custom index\n    _.some(this._indexByCustom, _.bind(function(cid, key) {\n      if (cid === viewCid) {\n        delete this._indexByCustom[key];\n        return true;\n      }\n    }, this));\n\n    // remove the view from the container\n    delete this._views[viewCid];\n\n    return this;\n  },\n\n  // Update the `.length` attribute on this container\n  _updateLength() {\n    this.length = _.size(this._views);\n\n    return this;\n  }\n});\n\nexport default Container;\n","// Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './child-view-container';\nimport MarionetteError from './error';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'events',\n  'filter',\n  'emptyView',\n  'emptyViewOptions',\n  'modelEvents',\n  'reorderOnSort',\n  'sort',\n  'triggers',\n  'ui',\n  'viewComparator'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n\n  // flag for maintaining the sorted order of the collection\n  sort: true,\n\n  // constructor\n  // option to pass `{sort: false}` to prevent the `CollectionView` from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  //\n  // option to pass `{viewComparator: compFunction()}` to allow the `CollectionView`\n  // to use a custom sort order for the collection.\n  constructor(options) {\n    this.render = _.bind(this.render, this);\n\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this._initBehaviors();\n    this.once('render', this._initialEvents);\n    this._initChildViewStorage();\n    this._bufferedChildren = [];\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Instead of inserting elements one by one into the page, it's much more performant to insert\n  // elements into a document fragment and then insert that document fragment into the page\n  _startBuffering() {\n    this._isBuffering = true;\n  },\n\n  _endBuffering() {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n    const triggerOnChildren = shouldTriggerAttach ? this._getImmediateChildren() : [];\n\n    this._isBuffering = false;\n\n    _.each(triggerOnChildren, child => {\n      triggerMethodOn(child, 'before:attach', child);\n    });\n\n    this.attachBuffer(this, this._createBuffer());\n\n    _.each(triggerOnChildren, child => {\n      child._isAttached = true;\n      triggerMethodOn(child, 'attach', child);\n    });\n\n    this._bufferedChildren = [];\n  },\n\n  _getImmediateChildren() {\n    return _.values(this.children._views);\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.render);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Handle a child added to the collection\n  _onCollectionAdd(child, collection, opts) {\n    // `index` is present when adding with `at` since BB 1.2; indexOf fallback for < 1.2\n    let index = opts.at !== undefined && (opts.index || collection.indexOf(child));\n\n    // When filtered or when there is no initial index, calculate index.\n    if (this.filter || index === false) {\n      index = _.indexOf(this._filteredSortedModels(index), child);\n    }\n\n    if (this._shouldAddChild(child, index)) {\n      this._destroyEmptyView();\n      this._addChild(child, index)\n    }\n  },\n\n  // Handle collection update model removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n    this._removeChildModels(changes.removed);\n  },\n\n  // Remove the child views and destroy them.\n  // This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  // \"models\" is an array of models and the corresponding views\n  // will be removed and destroyed from the CollectionView\n  _removeChildModels(models) {\n    // Used to determine where to update the remaining\n    // sibling view indices after these views are removed.\n    const removedViews = this._getRemovedViews(models);\n\n    if (!removedViews.length) {\n      return;\n    }\n\n    this.children._updateLength();\n\n    // decrement the index of views after this one\n    this._updateIndices(removedViews, false);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n  },\n\n  // Returns the views that will be used for re-indexing\n  // through CollectionView#_updateIndices.\n  _getRemovedViews(models) {\n\n    // Returning a view means something was removed.\n    return _.reduce(models, (removingViews, model) => {\n      const view = model && this.children.findByModel(model);\n\n      if (!view || view._isDestroyed) {\n        return removingViews;\n      }\n\n      this._removeChildView(view);\n\n      removingViews.push(view);\n\n      return removingViews;\n    }, []);\n  },\n\n  _removeChildView(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n\n    this.stopListening(view);\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views. Override this method to provide your own implementation of a\n  // render function for the collection view.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n    this._renderChildren();\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // An efficient rendering used for filtering. Instead of modifying the whole DOM for the\n  // collection view, we are only adding or removing the related childrenViews.\n  setFilter(filter, {preventRender} = {}) {\n    const canBeRendered = this._isRendered && !this._isDestroyed;\n    const filterChanged = this.filter !== filter;\n    const shouldRender = canBeRendered && filterChanged && !preventRender;\n\n    if (shouldRender) {\n      const previousModels = this._filteredSortedModels();\n      this.filter = filter;\n      const models = this._filteredSortedModels();\n      this._applyModelDeltas(models, previousModels);\n    } else {\n      this.filter = filter;\n    }\n\n    return this;\n  },\n\n  // `removeFilter` is actually an alias for removing filters.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  // Calculate and apply difference by cid between `models` and `previousModels`.\n  _applyModelDeltas(models, previousModels) {\n    const currentIds = {};\n    _.each(models, (model, index) => {\n      const addedChildNotExists = !this.children.findByModel(model);\n      if (addedChildNotExists) {\n        this._onCollectionAdd(model, this.collection, {at: index});\n      }\n      currentIds[model.cid] = true;\n    });\n\n    const removeModels = _.filter(previousModels, (prevModel) => {\n      return !currentIds[prevModel.cid] && this.children.findByModel(prevModel);\n    });\n\n    this._removeChildModels(removeModels);\n  },\n\n  // Reorder DOM after sorting. When your element's rendering do not use their index,\n  // you can pass reorderOnSort: true to only reorder the DOM after a sort instead of\n  // rendering all the collectionView.\n  reorder() {\n    const children = this.children;\n    const models = this._filteredSortedModels();\n\n    if (!models.length && this._showingEmptyView) { return this; }\n\n    const anyModelsAdded = _.some(models, function(model) {\n      return !children.findByModel(model);\n    });\n\n    // If there are any new models added due to filtering we need to add child views,\n    // so render as normal.\n    if (anyModelsAdded) {\n      this.render();\n    } else {\n\n      const filteredOutModels = [];\n\n      // Get the DOM nodes in the same order as the models and\n      // find the model that were children before but aren't in this new order.\n      const elsToReorder = _.reduce(this.children._views, function(viewEls, view) {\n        const index = _.indexOf(models, view.model);\n\n        if (index === -1) {\n          filteredOutModels.push(view.model);\n          return viewEls;\n        }\n\n        view._index = index;\n\n        viewEls[index] = view.el;\n\n        return viewEls;\n      }, new Array(models.length));\n\n      this.triggerMethod('before:reorder', this);\n\n      const elBuffer = this.Dom.createBuffer();\n\n      _.each(elsToReorder, (el) => {\n        this.Dom.appendContents(elBuffer, el);\n      });\n\n      // Since append moves elements that are already in the DOM, appending the elements\n      // will effectively reorder them.\n      this._appendReorderedChildren(elBuffer);\n\n      // remove any views that have been filtered out\n      this._removeChildModels(filteredOutModels);\n\n      this.triggerMethod('reorder', this);\n    }\n    return this;\n  },\n\n  // Render view after sorting. Override this method to change how the view renders\n  // after a `sort` on the collection.\n  resortView() {\n    if (this.reorderOnSort) {\n      this.reorder();\n    } else {\n      this._renderChildren();\n    }\n    return this;\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will render.\n  _sortViews() {\n    const models = this._filteredSortedModels();\n\n    // check for any changes in sort order of views\n    const orderChanged = _.find(models, (item, index) => {\n      const view = this.children.findByModel(item);\n      return !view || view._index !== index;\n    });\n\n    if (orderChanged) {\n      this.resortView();\n    }\n  },\n\n  // Internal reference to what index a `emptyView` is.\n  _emptyViewIndex: -1,\n\n  // Internal method. Separated so that CompositeView can append to the childViewContainer\n  // if necessary\n  _appendReorderedChildren(children) {\n    this.Dom.appendContents(this.el, children, {_$el: this.$el});\n  },\n\n  // Internal method. Separated so that CompositeView can have more control over events\n  // being triggered, around the rendering process\n  _renderChildren() {\n    if (this._isRendered) {\n      this._destroyEmptyView();\n      this._destroyChildren();\n    }\n\n    const models = this._filteredSortedModels();\n    if (this.isEmpty({processedModels: models})) {\n      this._showEmptyView();\n    } else {\n      this.triggerMethod('before:render:children', this);\n      this._startBuffering();\n      this._showCollection(models);\n      this._endBuffering();\n      this.triggerMethod('render:children', this);\n    }\n  },\n\n  _createView(model, index) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model, index);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n    return view;\n  },\n\n  _setupChildView(view, index) {\n    monitorViewEvents(view);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n\n    if (this.sort) {\n      view._index = index;\n    }\n  },\n\n  // Internal method to loop through collection and show each child view.\n  _showCollection(models) {\n    _.each(models, _.bind(this._addChild, this));\n    this.children._updateLength();\n  },\n\n  // Allow the collection to be sorted by a custom view comparator\n  _filteredSortedModels(addedAt) {\n    if (!this.collection || !this.collection.length) { return []; }\n\n    const viewComparator = this.getViewComparator();\n    let models = this.collection.models;\n    addedAt = Math.min(Math.max(addedAt, 0), models.length - 1);\n\n    if (viewComparator) {\n      let addedModel;\n      // Preserve `at` location, even for a sorted view\n      if (addedAt) {\n        addedModel = models[addedAt];\n        models = models.slice(0, addedAt).concat(models.slice(addedAt + 1));\n      }\n      models = this._sortModelsBy(models, viewComparator);\n      if (addedModel) {\n        models.splice(addedAt, 0, addedModel);\n      }\n    }\n\n    // Filter after sorting in case the filter uses the index\n    models = this._filterModels(models);\n\n    return models;\n  },\n\n  getViewComparator() {\n    return this.viewComparator;\n  },\n\n  // Filter an array of models, if a filter exists\n  _filterModels(models) {\n    if (this.filter) {\n      models = _.filter(models, (model, index) => {\n        return this._shouldAddChild(model, index);\n      });\n    }\n    return models;\n  },\n\n  _sortModelsBy(models, comparator) {\n    if (typeof comparator === 'string') {\n      return _.sortBy(models, (model) => {\n        return model.get(comparator);\n      });\n    } else if (comparator.length === 1) {\n      return _.sortBy(models, _.bind(comparator, this));\n    } else {\n      return _.clone(models).sort(_.bind(comparator, this));\n    }\n  },\n\n  // Internal method to show an empty view in place of a collection of child views,\n  // when the collection is empty\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (EmptyView && !this._showingEmptyView) {\n      this._showingEmptyView = true;\n\n      const model = new Backbone.Model();\n      let emptyViewOptions =\n        this.emptyViewOptions || this.childViewOptions;\n      if (_.isFunction(emptyViewOptions)) {\n        emptyViewOptions = emptyViewOptions.call(this, model, this._emptyViewIndex);\n      }\n\n      const view = this.buildChildView(model, EmptyView, emptyViewOptions);\n\n      this.triggerMethod('before:render:empty', this, view);\n      this.addChildView(view, 0);\n      this.triggerMethod('render:empty', this, view);\n    }\n  },\n\n  // Internal method to destroy an existing emptyView instance if one exists. Called when\n  // a collection view has been rendered empty, and then a child is added to the collection.\n  _destroyEmptyView() {\n    if (this._showingEmptyView) {\n      this.triggerMethod('before:remove:empty', this);\n\n      this._destroyChildren();\n      delete this._showingEmptyView;\n\n      this.triggerMethod('remove:empty', this);\n    }\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  // Internal method for building and adding a child view\n  _addChild(child, index) {\n    const view = this._createView(child, index);\n    this.addChildView(view, index);\n\n    return view;\n  },\n\n  _getChildViewOptions(child, index) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child, index);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index.\n  // This will also update the indices of later views in the collection in order to keep the\n  // children in sync with the collection.\n  addChildView(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n    this._setupChildView(view, index);\n\n    // Store the child view itself so we can properly remove and/or destroy it later\n    if (this._isBuffering) {\n      // Add to children, but don't update children's length.\n      this.children._add(view);\n    } else {\n      // increment indices of views after this one\n      this._updateIndices(view, true);\n      this.children.add(view);\n    }\n\n    renderView(view);\n\n    this._attachView(view, index);\n\n    this.triggerMethod('add:child', this, view);\n\n    return view;\n  },\n\n  // Internal method. This decrements or increments the indices of views after the added/removed\n  // view to keep in sync with the collection.\n  _updateIndices(views, increment) {\n    if (!this.sort) {\n      return;\n    }\n\n    if (!increment) {\n      _.each(_.sortBy(this.children._views, '_index'), (view, index) => {\n        view._index = index;\n      });\n\n      return;\n    }\n\n    const view = _.isArray(views) ? _.max(views, '_index') : views;\n\n    if (_.isObject(view)) {\n      // update the indexes of views after this one\n      _.each(this.children._views, (laterView) => {\n        if (laterView._index >= view._index) {\n          laterView._index += 1;\n        }\n      });\n    }\n  },\n\n  _attachView(view, index) {\n    // Only trigger attach if already attached and not buffering,\n    // otherwise _endBuffering() or Region#show() handles this.\n    const shouldTriggerAttach = !view._isAttached && !this._isBuffering && this._isAttached && this.monitorViewEvents !== false;\n\n    if (shouldTriggerAttach) {\n      triggerMethodOn(view, 'before:attach', view);\n    }\n\n    this.attachHtml(this, view, index);\n\n    if (shouldTriggerAttach) {\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    }\n  },\n\n  // Build a `childView` for a model in the collection.\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  // Remove the child view and destroy it. This function also updates the indices of later views\n  // in the collection in order to keep the children in sync with the collection.\n  removeChildView(view) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    this._removeChildView(view);\n    this.children._updateLength();\n    // decrement the index of views after this one\n    this._updateIndices(view, false);\n    return view;\n  },\n\n  // check if the collection is empty or optionally whether an array of pre-processed models is empty\n  isEmpty(options) {\n    let models;\n    if (_.result(options, 'processedModels')) {\n      models = options.processedModels;\n    } else {\n      models = this.collection ? this.collection.models : [];\n      models = this._filterModels(models);\n    }\n    return models.length === 0;\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(collectionView, buffer) {\n    this.Dom.appendContents(collectionView.el, buffer, {_$el: collectionView.$el});\n  },\n\n  // Create a fragment buffer from the currently buffered children\n  _createBuffer() {\n    const elBuffer = this.Dom.createBuffer();\n    _.each(this._bufferedChildren, (b) => {\n      this.Dom.appendContents(elBuffer, b.el, {_$contents: b.$el});\n    });\n    return elBuffer;\n  },\n\n  // Append the HTML to the collection's `el`. Override this method to do something other\n  // than `.append`.\n  attachHtml(collectionView, childView, index) {\n    if (collectionView._isBuffering) {\n      // buffering happens on reset events and initial renders\n      // in order to reduce the number of inserts into the\n      // document, which are expensive.\n      collectionView._bufferedChildren.splice(index, 0, childView);\n    } else {\n      // If we've already rendered the main collection, append\n      // the new child into the correct order if we need to. Otherwise\n      // append to the end.\n      if (!collectionView._insertBefore(childView, index)) {\n        collectionView._insertAfter(childView);\n      }\n    }\n  },\n\n  // Internal method. Check whether we need to insert the view into the correct position.\n  _insertBefore(childView, index) {\n    let currentView;\n    const findPosition = this.sort && (index < this.children.length - 1);\n    if (findPosition) {\n      // Find the view after this one\n      currentView = _.find(this.children._views, (view) => {\n        return view._index === index + 1;\n      });\n    }\n\n    if (currentView) {\n      this.beforeEl(currentView.el, childView.el);\n      return true;\n    }\n\n    return false;\n  },\n\n  // Override to handle DOM inserting differently\n  beforeEl(el, siblings) {\n    this.$(el).before(siblings);\n  },\n\n  // Internal method. Append a view to the end of the $el\n  _insertAfter(childView) {\n    this.Dom.appendContents(this.el, childView.el, {_$el: this.$el, _$contents: childView.$el});\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren(options) {\n    if (!this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.children._updateLength();\n    this.triggerMethod('destroy:children', this);\n  },\n\n  // Return true if the given child should be shown. Return false otherwise.\n  // The filter will be passed (child, index, collection), where\n  //  'child' is the given model\n  //  'index' is the index of that model in the collection\n  //  'collection' is the collection referenced by this CollectionView\n  _shouldAddChild(child, index) {\n    const filter = this.filter;\n    return !_.isFunction(filter) || filter.call(this, child, index, this.collection);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","// Next Collection View\n// ---------------\n\nimport _ from 'underscore';\nimport Backbone from 'backbone';\nimport { renderView, destroyView } from './common/view';\nimport isNodeAttached from './common/is-node-attached';\nimport monitorViewEvents from './common/monitor-view-events';\nimport { triggerMethodOn } from './common/trigger-method';\nimport ChildViewContainer from './next-child-view-container';\nimport MarionetteError from './error';\nimport Region from './region';\nimport ViewMixin from './mixins/view';\nimport { setDomApi } from './config/dom';\n\nconst ClassOptions = [\n  'behaviors',\n  'childView',\n  'childViewEventPrefix',\n  'childViewEvents',\n  'childViewOptions',\n  'childViewTriggers',\n  'collectionEvents',\n  'emptyView',\n  'emptyViewOptions',\n  'events',\n  'modelEvents',\n  'sortWithCollection',\n  'triggers',\n  'ui',\n  'viewComparator',\n  'viewFilter'\n];\n\n// A view that iterates over a Backbone.Collection\n// and renders an individual child view for each model.\nconst CollectionView = Backbone.View.extend({\n  // flag for maintaining the sorted order of the collection\n  sortWithCollection: true,\n\n  // constructor\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    monitorViewEvents(this);\n\n    this.once('render', this._initialEvents);\n\n    // This children container isn't really used by a render, but it provides\n    // the ability to check `this.children.length` prior to rendering\n    // It also allows for cases where only addChildView is used\n    this._initChildViewStorage();\n    this._initBehaviors();\n\n    const args = Array.prototype.slice.call(arguments);\n    args[0] = this.options;\n    Backbone.View.prototype.constructor.apply(this, args);\n\n    // Init empty region\n    this.getEmptyRegion();\n\n    this.delegateEntityEvents();\n\n    this._triggerEventOnBehaviors('initialize', this);\n  },\n\n  // Internal method to set up the `children` object for storing all of the child views\n  _initChildViewStorage() {\n    this.children = new ChildViewContainer();\n  },\n\n  // Create an region to show the emptyView\n  getEmptyRegion() {\n    if (this._emptyRegion && !this._emptyRegion.isDestroyed()) {\n      return this._emptyRegion;\n    }\n\n    this._emptyRegion = new Region({ el: this.el, replaceElement: false });\n\n    this._emptyRegion._parentView = this;\n\n    return this._emptyRegion;\n  },\n\n  // Configured the initial events that the collection view binds to.\n  _initialEvents() {\n    this.listenTo(this.collection, {\n      'sort': this._onCollectionSort,\n      'reset': this._onCollectionReset,\n      'update': this._onCollectionUpdate\n    });\n  },\n\n  // Internal method. This checks for any changes in the order of the collection.\n  // If the index of any view doesn't match, it will re-sort.\n  _onCollectionSort(collection, { add, merge, remove }) {\n    if (!this.sortWithCollection || this.viewComparator === false) {\n      return;\n    }\n\n    // If the data is changing we will handle the sort later in `_onCollectionUpdate`\n    if (add || remove || merge) {\n      return;\n    }\n\n    // If the only thing happening here is sorting, sort.\n    this.sort();\n  },\n\n  _onCollectionReset() {\n    this.render();\n  },\n\n  // Handle collection update model additions and  removals\n  _onCollectionUpdate(collection, options) {\n    const changes = options.changes;\n\n    // Remove first since it'll be a shorter array lookup.\n    const removedViews = changes.removed.length && this._removeChildModels(changes.removed);\n\n    this._addedViews = changes.added.length && this._addChildModels(changes.added);\n\n    this._detachChildren(removedViews);\n\n    this._showChildren();\n\n    // Destroy removed child views after all of the render is complete\n    this._removeChildViews(removedViews);\n  },\n\n  _removeChildModels(models) {\n    return _.reduce(models, (views, model) => {\n      const removeView = this._removeChildModel(model);\n\n      if (removeView) { views.push(removeView); }\n\n      return views;\n    }, []);\n  },\n\n  _removeChildModel(model) {\n    const view = this.children.findByModel(model);\n\n    if (view) { this._removeChild(view); }\n\n    return view;\n  },\n\n  _removeChild(view) {\n    this.triggerMethod('before:remove:child', this, view);\n\n    this.children._remove(view);\n\n    this.triggerMethod('remove:child', this, view);\n  },\n\n  // Added views are returned for consistency with _removeChildModels\n  _addChildModels(models) {\n    return _.map(models, _.bind(this._addChildModel, this));\n  },\n\n  _addChildModel(model) {\n    const view = this._createChildView(model);\n\n    this._addChild(view);\n\n    return view;\n  },\n\n  _createChildView(model) {\n    const ChildView = this._getChildView(model);\n    const childViewOptions = this._getChildViewOptions(model);\n    const view = this.buildChildView(model, ChildView, childViewOptions);\n\n    return view;\n  },\n\n  _addChild(view, index) {\n    this.triggerMethod('before:add:child', this, view);\n\n    this._setupChildView(view);\n    this.children._add(view, index);\n\n    this.triggerMethod('add:child', this, view);\n  },\n\n  // Retrieve the `childView` class\n  // The `childView` property can be either a view class or a function that\n  // returns a view class. If it is a function, it will receive the model that\n  // will be passed to the view instance (created from the returned view class)\n  _getChildView(child) {\n    let childView = this.childView;\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'NoChildViewError',\n        message: 'A \"childView\" must be specified'\n      });\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // First check if the `view` is a view class (the common case)\n  // Then check if it's a function (which we assume that returns a view class)\n  _getView(view, child) {\n    if (view.prototype instanceof Backbone.View || view === Backbone.View) {\n      return view;\n    } else if (_.isFunction(view)) {\n      return view.call(this, child);\n    }\n  },\n\n  _getChildViewOptions(child) {\n    if (_.isFunction(this.childViewOptions)) {\n      return this.childViewOptions(child);\n    }\n\n    return this.childViewOptions;\n  },\n\n  // Build a `childView` for a model in the collection.\n  // Override to customize the build\n  buildChildView(child, ChildViewClass, childViewOptions) {\n    const options = _.extend({model: child}, childViewOptions);\n    return new ChildViewClass(options);\n  },\n\n  _setupChildView(view) {\n    monitorViewEvents(view);\n\n    // We need to listen for if a view is destroyed in a way other\n    // than through the CollectionView.\n    // If this happens we need to remove the reference to the view\n    // since once a view has been destroyed we can not reuse it.\n    view.on('destroy', this.removeChildView, this);\n\n    // set up the child view event forwarding\n    this._proxyChildViewEvents(view);\n  },\n\n  // used by ViewMixin's `_childViewEventHandler`\n  _getImmediateChildren() {\n    return this.children._views;\n  },\n\n  // Overriding Backbone.View's `setElement` to handle\n  // if an el was previously defined. If so, the view might be\n  // attached on setElement.\n  setElement() {\n    Backbone.View.prototype.setElement.apply(this, arguments);\n\n    this._isAttached = isNodeAttached(this.el);\n\n    return this;\n  },\n\n  // Render children views.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this.triggerMethod('before:render', this);\n\n    this._destroyChildren();\n\n    // After all children have been destroyed re-init the container\n    this.children._init();\n\n    if (this.collection) {\n      this._addChildModels(this.collection.models);\n    }\n\n    this._showChildren();\n\n    this._isRendered = true;\n\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  // Sorts the children then filters and renders the results.\n  sort() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    this._showChildren();\n\n    return this;\n  },\n\n  _showChildren() {\n    if (this.isEmpty()) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._sortChildren();\n\n    this.filter();\n  },\n\n  // Returns true if the collectionView is considered empty.\n  // This is called twice during a render. Once to check the data,\n  // and again when views are filtered. Override this function to\n  // customize what empty means.\n  isEmpty(allViewsFiltered) {\n    return allViewsFiltered || !this.children.length;\n  },\n\n  _showEmptyView() {\n    const EmptyView = this._getEmptyView();\n\n    if (!EmptyView) {\n      return;\n    }\n\n    const options = this._getEmptyViewOptions();\n\n    const emptyRegion = this.getEmptyRegion();\n\n    emptyRegion.show(new EmptyView(options));\n  },\n\n  // Retrieve the empty view class\n  _getEmptyView() {\n    const emptyView = this.emptyView;\n\n    if (!emptyView) { return; }\n\n    return this._getView(emptyView);\n  },\n\n  // Remove the emptyView\n  _destroyEmptyView() {\n    const emptyRegion = this.getEmptyRegion();\n    // Only empty if a view is show so the region\n    // doesn't detach any other unrelated HTML\n    if (emptyRegion.hasView()) {\n      emptyRegion.empty();\n    }\n  },\n\n  //\n  _getEmptyViewOptions() {\n    const emptyViewOptions = this.emptyViewOptions || this.childViewOptions;\n\n    if (_.isFunction(emptyViewOptions)) {\n      return emptyViewOptions.call(this);\n    }\n\n    return emptyViewOptions;\n  },\n\n  // Sorts views by viewComparator and sets the children to the new order\n  _sortChildren() {\n    let viewComparator = this.getComparator();\n\n    if (!viewComparator) { return; }\n\n    // If children are sorted prevent added to end perf\n    delete this._addedViews;\n\n    this.triggerMethod('before:sort', this);\n\n    this.children._sort(viewComparator, this);\n\n    this.triggerMethod('sort', this);\n  },\n\n  // Sets the view's `viewComparator` and applies the sort if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setComparator(comparator, {preventRender} = {}) {\n    const comparatorChanged = this.viewComparator !== comparator;\n    const shouldSort = comparatorChanged && !preventRender;\n\n    this.viewComparator = comparator;\n\n    if (shouldSort) {\n      this.sort();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewComparator` and follows the same rules for rendering as `setComparator`.\n  removeComparator(options) {\n    return this.setComparator(null, options);\n  },\n\n  // If viewComparator is overriden it will be returned here.\n  // Additionally override this function to provide custom\n  // viewComparator logic\n  getComparator() {\n    if (this.viewComparator) { return this.viewComparator }\n\n    if (!this.sortWithCollection || this.viewComparator === false || !this.collection) {\n      return false;\n    }\n\n    return this._viewComparator;\n  },\n\n  // Default internal view comparator that order the views by\n  // the order of the collection\n  _viewComparator(view) {\n    return this.collection.indexOf(view.model);\n  },\n\n  // This method re-filters the children views and re-renders the results\n  filter() {\n    if (this._isDestroyed) { return this; }\n\n    if (!this.children.length) { return this; }\n\n    const filteredViews = this._filterChildren();\n\n    this._renderChildren(filteredViews);\n\n    return this;\n  },\n\n  _filterChildren() {\n    const viewFilter = this._getFilter();\n    const addedViews = this._addedViews;\n\n    delete this._addedViews;\n\n    if (!viewFilter) {\n      if (addedViews) { return addedViews; }\n\n      return this.children._views;\n    }\n\n    this.triggerMethod('before:filter', this);\n\n    const attachViews = [];\n    const detachViews = [];\n\n    _.each(this.children._views, (view, key, children) => {\n      (viewFilter.call(this, view, key, children) ? attachViews : detachViews).push(view);\n    });\n\n    this._detachChildren(detachViews);\n\n    this.triggerMethod('filter', this, attachViews, detachViews);\n\n    return attachViews;\n  },\n\n  // This method returns a function for the viewFilter\n  _getFilter() {\n    const viewFilter = this.getFilter();\n\n    if (!viewFilter) { return false; }\n\n    if (_.isFunction(viewFilter)) {\n      return viewFilter;\n    }\n\n    // Support filter predicates `{ fooFlag: true }`\n    if (_.isObject(viewFilter)) {\n      const matcher = _.matches(viewFilter);\n      return function(view) {\n        return matcher(view.model && view.model.attributes);\n      };\n    }\n\n    // Filter by model attribute\n    if (_.isString(viewFilter)) {\n      return function(view) {\n        return view.model && view.model.get(viewFilter);\n      };\n    }\n\n    throw new MarionetteError({\n      name: 'InvalidViewFilterError',\n      message: '\"viewFilter\" must be a function, predicate object literal, a string indicating a model attribute, or falsy'\n    });\n  },\n\n  // Override this function to provide custom\n  // viewFilter logic\n  getFilter() {\n    return this.viewFilter;\n  },\n\n  // Sets the view's `viewFilter` and applies the filter if the view is ready.\n  // To prevent the render pass `{ preventRender: true }` as the 2nd argument.\n  setFilter(filter, {preventRender} = {}) {\n    const filterChanged = this.viewFilter !== filter;\n    const shouldRender = filterChanged && !preventRender;\n\n    this.viewFilter = filter;\n\n    if (shouldRender) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Clears the `viewFilter` and follows the same rules for rendering as `setFilter`.\n  removeFilter(options) {\n    return this.setFilter(null, options);\n  },\n\n  _detachChildren(detachingViews) {\n    _.each(detachingViews, _.bind(this._detachChildView, this));\n  },\n\n  _detachChildView(view) {\n    const shouldTriggerDetach = view._isAttached && this.monitorViewEvents !== false;\n    if (shouldTriggerDetach) {\n      triggerMethodOn(view, 'before:detach', view);\n    }\n\n    this.detachHtml(view);\n\n    if (shouldTriggerDetach) {\n      view._isAttached = false;\n      triggerMethodOn(view, 'detach', view);\n    }\n  },\n\n  // Override this method to change how the collectionView detaches a child view\n  detachHtml(view) {\n    this.Dom.detachEl(view.el, view.$el);\n  },\n\n  _renderChildren(views) {\n    if (this.isEmpty(!views.length)) {\n      this._showEmptyView();\n      return;\n    }\n\n    this._destroyEmptyView();\n\n    this.triggerMethod('before:render:children', this, views);\n\n    const els = this._getBuffer(views);\n\n    this._attachChildren(els, views);\n\n    this.triggerMethod('render:children', this, views);\n  },\n\n  _attachChildren(els, views) {\n    const shouldTriggerAttach = this._isAttached && this.monitorViewEvents !== false;\n\n    views = shouldTriggerAttach ? views : [];\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      triggerMethodOn(view, 'before:attach', view);\n    });\n\n    this.attachHtml(els);\n\n    _.each(views, view => {\n      if (view._isAttached) { return; }\n      view._isAttached = true;\n      triggerMethodOn(view, 'attach', view);\n    });\n  },\n\n  // Renders each view in children and creates a fragment buffer from them\n  _getBuffer(views) {\n    const elBuffer = this.Dom.createBuffer();\n\n    _.each(views, view => {\n      renderView(view);\n      this.Dom.appendContents(elBuffer, view.el, {_$contents: view.$el});\n    });\n\n    return elBuffer;\n  },\n\n  // Override this method to do something other than `.append`.\n  // You can attach any HTML at this point including the els.\n  attachHtml(els) {\n    this.Dom.appendContents(this.el, els, {_$el: this.$el});\n  },\n\n  swapChildViews(view1, view2) {\n    if (!this.children.hasView(view1) || !this.children.hasView(view2)) {\n      throw new MarionetteError({\n        name: 'ChildSwapError',\n        message: 'Both views must be children of the collection view'\n      });\n    }\n\n    this.children._swap(view1, view2);\n    this.Dom.swapEl(view1.el, view2.el);\n\n    // If the views are not filtered the same, refilter\n    if (this.Dom.hasEl(this.el, view1.el) !== this.Dom.hasEl(this.el, view2.el)) {\n      this.filter();\n    }\n\n    return this;\n  },\n\n  // Render the child's view and add it to the HTML for the collection view at a given index, based on the current sort\n  addChildView(view, index) {\n    if (!view || view._isDestroyed) {\n      return view;\n    }\n\n    // Only cache views if added to the end\n    if (!index || index >= this.children.length) {\n      this._addedViews = [view];\n    }\n    this._addChild(view, index);\n    this._showChildren();\n\n    return view;\n  },\n\n  // Detach a view from the children.  Best used when adding a\n  // childView from `addChildView`\n  detachChildView(view) {\n    this.removeChildView(view, { shouldDetach: true });\n\n    return view;\n  },\n\n  // Remove the child view and destroy it.  Best used when adding a\n  // childView from `addChildView`\n  // The options argument is for internal use only\n  removeChildView(view, options) {\n    if (!view) {\n      return view;\n    }\n\n    this._removeChildView(view, options);\n\n    this._removeChild(view);\n\n    if (this.isEmpty()) {\n      this._showEmptyView();\n    }\n\n    return view;\n  },\n\n  _removeChildViews(views) {\n    _.each(views, _.bind(this._removeChildView, this));\n  },\n\n  _removeChildView(view, {shouldDetach} = {}) {\n    view.off('destroy', this.removeChildView, this);\n\n    if (shouldDetach) {\n      this._detachChildView(view);\n    } else {\n      this._destroyChildView(view);\n    }\n\n    this.stopListening(view);\n  },\n\n  _destroyChildView(view) {\n    if (view._isDestroyed) {\n      return;\n    }\n\n    view._shouldDisableEvents = this.monitorViewEvents === false;\n    destroyView(view);\n  },\n\n  // called by ViewMixin destroy\n  _removeChildren() {\n    this._destroyChildren();\n    const emptyRegion = this.getEmptyRegion();\n    emptyRegion.destroy();\n    delete this._addedViews;\n  },\n\n  // Destroy the child views that this collection view is holding on to, if any\n  _destroyChildren() {\n    if (!this.children || !this.children.length) {\n      return;\n    }\n\n    this.triggerMethod('before:destroy:children', this);\n    if (this.monitorViewEvents === false) {\n      this.Dom.detachContents(this.el, this.$el);\n    }\n    _.each(this.children._views, _.bind(this._removeChildView, this));\n    this.triggerMethod('destroy:children', this);\n  }\n}, {\n  setDomApi\n});\n\n_.extend(CollectionView.prototype, ViewMixin);\n\nexport default CollectionView;\n","// Composite View\n// --------------\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport MarionetteError from './error';\nimport CollectionView from './collection-view';\nimport View from './view';\n\nconst ClassOptions = [\n  'childViewContainer',\n  'template',\n  'templateContext'\n];\n\n// Used for rendering a branch-leaf, hierarchical structure.\n// Extends directly from CollectionView\n// @deprecated\nconst CompositeView = CollectionView.extend({\n\n  // Setting up the inheritance chain which allows changes to\n  // Marionette.CollectionView.prototype.constructor which allows overriding\n  // option to pass '{sort: false}' to prevent the CompositeView from\n  // maintaining the sorted order of the collection.\n  // This will fallback onto appending childView's to the end.\n  constructor(options) {\n    deprecate('CompositeView is deprecated. Convert to View at your earliest convenience');\n\n    this.mergeOptions(options, ClassOptions);\n\n    CollectionView.prototype.constructor.apply(this, arguments);\n  },\n\n  // Configured the initial events that the composite view\n  // binds to. Override this method to prevent the initial\n  // events, or to add your own initial events.\n  _initialEvents() {\n\n    // Bind only after composite view is rendered to avoid adding child views\n    // to nonexistent childViewContainer\n\n    if (this.collection) {\n      this.listenTo(this.collection, 'add', this._onCollectionAdd);\n      this.listenTo(this.collection, 'update', this._onCollectionUpdate);\n      this.listenTo(this.collection, 'reset', this.renderChildren);\n\n      if (this.sort) {\n        this.listenTo(this.collection, 'sort', this._sortViews);\n      }\n    }\n  },\n\n  // Retrieve the `childView` to be used when rendering each of\n  // the items in the collection. The default is to return\n  // `this.childView` or Marionette.CompositeView if no `childView`\n  // has been defined. As happens in CollectionView, `childView` can\n  // be a function (which should return a view class).\n  _getChildView(child) {\n    let childView = this.childView;\n\n    // for CompositeView, if `childView` is not specified, we'll get the same\n    // composite view class rendered for each child in the collection\n    // then check if the `childView` is a view class (the common case)\n    // finally check if it's a function (which we assume that returns a view class)\n    if (!childView) {\n      return this.constructor;\n    }\n\n    childView = this._getView(childView, child);\n\n    if (!childView) {\n      throw new MarionetteError({\n        name: 'InvalidChildViewError',\n        message: '\"childView\" must be a view class or a function that returns a view class'\n      });\n    }\n\n    return childView;\n  },\n\n  // Return the serialized model\n  serializeData() {\n    return this.serializeModel();\n  },\n\n  // Renders the model and the collection.\n  render() {\n    if (this._isDestroyed) { return this; }\n    this._isRendering = true;\n    this.resetChildViewContainer();\n\n    this.triggerMethod('before:render', this);\n\n    this._renderTemplate();\n    this.bindUIElements();\n    this.renderChildren();\n\n    this._isRendering = false;\n    this._isRendered = true;\n    this.triggerMethod('render', this);\n    return this;\n  },\n\n  renderChildren() {\n    if (this._isRendered || this._isRendering) {\n      CollectionView.prototype._renderChildren.call(this);\n    }\n  },\n\n  // You might need to override this if you've overridden attachHtml\n  attachBuffer(compositeView, buffer) {\n    const $container = this.getChildViewContainer(compositeView);\n    this.Dom.appendContents($container[0], buffer, {_$el: $container});\n  },\n\n  // Internal method. Append a view to the end of the $el.\n  // Overidden from CollectionView to ensure view is appended to\n  // childViewContainer\n  _insertAfter(childView) {\n    const $container = this.getChildViewContainer(this, childView);\n    this.Dom.appendContents($container[0], childView.el, {_$el: $container, _$contents: childView.$el});\n  },\n\n  // Internal method. Append reordered childView'.\n  // Overidden from CollectionView to ensure reordered views\n  // are appended to childViewContainer\n  _appendReorderedChildren(children) {\n    const $container = this.getChildViewContainer(this);\n    this.Dom.appendContents($container[0], children, {_$el: $container});\n  },\n\n  // Internal method to ensure an `$childViewContainer` exists, for the\n  // `attachHtml` method to use.\n  getChildViewContainer(containerView, childView) {\n    if (!!containerView.$childViewContainer) {\n      return containerView.$childViewContainer;\n    }\n\n    let container;\n    const childViewContainer = containerView.childViewContainer;\n    if (childViewContainer) {\n\n      const selector = _.result(containerView, 'childViewContainer');\n\n      if (selector.charAt(0) === '@' && containerView.ui) {\n        container = containerView.ui[selector.substr(4)];\n      } else {\n        container = this.$(selector);\n      }\n\n      if (container.length <= 0) {\n        throw new MarionetteError({\n          name: 'ChildViewContainerMissingError',\n          message: `The specified \"childViewContainer\" was not found: ${containerView.childViewContainer}`\n        });\n      }\n\n    } else {\n      container = containerView.$el;\n    }\n\n    containerView.$childViewContainer = container;\n    return container;\n  },\n\n  // Internal method to reset the `$childViewContainer` on render\n  resetChildViewContainer() {\n    if (this.$childViewContainer) {\n      this.$childViewContainer = undefined;\n    }\n  }\n});\n\n// To prevent duplication but allow the best View organization\n// Certain View methods are mixed directly into the deprecated CompositeView\nconst MixinFromView = _.pick(View.prototype, 'serializeModel', 'getTemplate', '_renderTemplate', '_renderHtml', 'mixinTemplateContext', 'attachElContent');\n_.extend(CompositeView.prototype, MixinFromView);\n\nexport default CompositeView;\n","// Behavior\n// --------\n\n// A Behavior is an isolated set of DOM /\n// user interactions that can be mixed into any View.\n// Behaviors allow you to blackbox View specific interactions\n// into portable logical chunks, keeping your views simple and your code DRY.\n\nimport _ from 'underscore';\nimport deprecate from './utils/deprecate';\nimport getNamespacedEventName from './utils/get-namespaced-event-name';\nimport MarionetteObject from './object';\nimport DelegateEntityEventsMixin from './mixins/delegate-entity-events';\nimport TriggersMixin from './mixins/triggers';\nimport UIMixin from './mixins/ui';\n\nconst ClassOptions = [\n  'collectionEvents',\n  'events',\n  'modelEvents',\n  'triggers',\n  'ui'\n];\n\nconst Behavior = MarionetteObject.extend({\n  cidPrefix: 'mnb',\n\n  constructor(options, view) {\n    // Setup reference to the view.\n    // this comes in handle when a behavior\n    // wants to directly talk up the chain\n    // to the view.\n    this.view = view;\n\n    if (this.defaults) {\n      deprecate('Behavior defaults are deprecated. For similar functionality set options on the Behavior class.');\n    }\n\n    this.defaults = _.clone(_.result(this, 'defaults', {}));\n\n    this._setOptions(_.extend({}, this.defaults, options));\n    this.mergeOptions(this.options, ClassOptions);\n\n    // Construct an internal UI hash using\n    // the behaviors UI hash and then the view UI hash.\n    // This allows the user to use UI hash elements\n    // defined in the parent view as well as those\n    // defined in the given behavior.\n    // This order will help the reuse and share of a behavior\n    // between multiple views, while letting a view override a\n    // selector under an UI key.\n    this.ui = _.extend({}, _.result(this, 'ui'), _.result(view, 'ui'));\n\n    MarionetteObject.apply(this, arguments);\n  },\n\n  // proxy behavior $ method to the view\n  // this is useful for doing jquery DOM lookups\n  // scoped to behaviors view.\n  $() {\n    return this.view.$.apply(this.view, arguments);\n  },\n\n  // Stops the behavior from listening to events.\n  // Overrides Object#destroy to prevent additional events from being triggered.\n  destroy() {\n    this.stopListening();\n\n    this.view._removeBehavior(this);\n\n    return this;\n  },\n\n  proxyViewProperties() {\n    this.$el = this.view.$el;\n    this.el = this.view.el;\n\n    return this;\n  },\n\n  bindUIElements() {\n    this._bindUIElements();\n\n    return this;\n  },\n\n  unbindUIElements() {\n    this._unbindUIElements();\n\n    return this;\n  },\n\n  getUI(name) {\n    return this._getUI(name);\n  },\n\n  // Handle `modelEvents`, and `collectionEvents` configuration\n  delegateEntityEvents() {\n    this._delegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  undelegateEntityEvents() {\n    this._undelegateEntityEvents(this.view.model, this.view.collection);\n\n    return this;\n  },\n\n  getEvents() {\n    // Normalize behavior events hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorEvents = this.normalizeUIKeys(_.result(this, 'events'));\n\n    // binds the handler to the behavior and builds a unique eventName\n    return _.reduce(behaviorEvents, (events, behaviorHandler, key) => {\n      if (!_.isFunction(behaviorHandler)) {\n        behaviorHandler = this[behaviorHandler];\n      }\n      if (!behaviorHandler) { return events; }\n      key = getNamespacedEventName(key, this.cid);\n      events[key] = _.bind(behaviorHandler, this);\n      return events;\n    }, {});\n  },\n\n  // Internal method to build all trigger handlers for a given behavior\n  getTriggers() {\n    if (!this.triggers) { return; }\n\n    // Normalize behavior triggers hash to allow\n    // a user to use the @ui. syntax.\n    const behaviorTriggers = this.normalizeUIKeys(_.result(this, 'triggers'));\n\n    return this._getViewTriggers(this.view, behaviorTriggers);\n  }\n\n});\n\n_.extend(Behavior.prototype, DelegateEntityEventsMixin, TriggersMixin, UIMixin);\n\nexport default Behavior;\n","// Application\n// -----------\nimport buildRegion from './common/build-region';\nimport MarionetteObject from './object';\nimport Region from './region';\n\nconst ClassOptions = [\n  'region',\n  'regionClass'\n];\n\n// A container for a Marionette application.\nconst Application = MarionetteObject.extend({\n  cidPrefix: 'mna',\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    this._initRegion();\n\n    MarionetteObject.prototype.constructor.apply(this, arguments);\n  },\n\n  regionClass: Region,\n\n  _initRegion() {\n    const region = this.region;\n\n    if (!region) { return; }\n\n    const defaults = {\n      regionClass: this.regionClass\n    };\n\n    this._region = buildRegion(region, defaults);\n  },\n\n  getRegion() {\n    return this._region;\n  },\n\n  showView(view, ...args) {\n    const region = this.getRegion();\n    return region.show(view, ...args);\n  },\n\n  getView() {\n    return this.getRegion().currentView;\n  },\n\n  // kick off all of the application's processes.\n  start(options) {\n    this.triggerMethod('before:start', this, options);\n    this.triggerMethod('start', this, options);\n    return this;\n  }\n\n});\n\nexport default Application;\n","// App Router\n// ----------\n\n// Reduce the boilerplate code of handling route events\n// and then calling a single method on another object,\n// called a controller.\n// Have your routers configured to call the method on\n// your controller, directly.\n//\n// Configure an AppRouter with `appRoutes`.\n//\n// App routers can only take one `controller` object.\n// It is recommended that you divide your controller\n// objects in to smaller pieces of related functionality\n// and have multiple routers / controllers, instead of\n// just one giant router and controller.\n//\n// You can also add standard routes to an AppRouter.\n\nimport Backbone from 'backbone';\nimport _ from 'underscore';\nimport { triggerMethod } from './common/trigger-method';\nimport MarionetteError from './error';\nimport CommonMixin from './mixins/common';\n\nconst ClassOptions = [\n  'appRoutes',\n  'controller'\n];\n\nconst AppRouter = Backbone.Router.extend({\n\n  constructor(options) {\n    this._setOptions(options);\n\n    this.mergeOptions(options, ClassOptions);\n\n    Backbone.Router.apply(this, arguments);\n\n    const appRoutes = this.appRoutes;\n    const controller = this._getController();\n    this.processAppRoutes(controller, appRoutes);\n    this.on('route', this._processOnRoute, this);\n  },\n\n  // Similar to route method on a Backbone Router but\n  // method is called on the controller\n  appRoute(route, methodName) {\n    const controller = this._getController();\n    this._addAppRoute(controller, route, methodName);\n    return this;\n  },\n\n  // process the route event and trigger the onRoute\n  // method call, if it exists\n  _processOnRoute(routeName, routeArgs) {\n    // make sure an onRoute before trying to call it\n    if (_.isFunction(this.onRoute)) {\n      // find the path that matches the current route\n      const routePath = _.invert(this.appRoutes)[routeName];\n      this.onRoute(routeName, routePath, routeArgs);\n    }\n  },\n\n  // Internal method to process the `appRoutes` for the\n  // router, and turn them in to routes that trigger the\n  // specified method on the specified `controller`.\n  processAppRoutes(controller, appRoutes) {\n    if (!appRoutes) { return this; }\n\n    const routeNames = _.keys(appRoutes).reverse(); // Backbone requires reverted order of routes\n\n    _.each(routeNames, route => {\n      this._addAppRoute(controller, route, appRoutes[route]);\n    });\n\n    return this;\n  },\n\n  _getController() {\n    return this.controller;\n  },\n\n  _addAppRoute(controller, route, methodName) {\n    const method = controller[methodName];\n\n    if (!method) {\n      throw new MarionetteError(`Method \"${methodName}\" was not found on the controller`);\n    }\n\n    this.route(route, methodName, _.bind(method, controller));\n  },\n\n  triggerMethod: triggerMethod\n});\n\n_.extend(AppRouter.prototype, CommonMixin);\n\nexport default AppRouter;\n","import Backbone from 'backbone';\nimport {version} from '../package.json';\n\nimport proxy from './utils/proxy';\nimport extend from './utils/extend';\nimport deprecate from './utils/deprecate';\n\nimport isNodeAttached from './common/is-node-attached';\nimport mergeOptions from './common/merge-options';\nimport getOption from './common/get-option';\nimport normalizeMethods from './common/normalize-methods';\nimport monitorViewEvents from './common/monitor-view-events';\n\nimport {\n  bindEvents,\n  unbindEvents\n} from './common/bind-events';\n\nimport {\n  bindRequests,\n  unbindRequests\n} from './common/bind-requests';\n\nimport {\n  triggerMethod,\n  triggerMethodOn\n} from './common/trigger-method';\n\n\nimport MarionetteObject from './object';\nimport TemplateCache from './template-cache';\nimport View from './view';\nimport CollectionView from './collection-view';\nimport NextCollectionView from './next-collection-view';\nimport CompositeView from './composite-view';\nimport Behavior from './behavior';\nimport Region from './region';\nimport Application from './application';\nimport AppRouter from './app-router';\nimport MarionetteError from './error';\n\nimport behaviorsLookup from './config/behaviors-lookup';\nimport DomApi from './config/dom';\nimport Renderer from './config/renderer';\n\nimport {\n  FEATURES,\n  isEnabled,\n  setEnabled\n} from './config/features';\n\nconst previousMarionette = Backbone.Marionette;\nconst Marionette = Backbone.Marionette = {};\n\n// This allows you to run multiple instances of Marionette on the same\n// webapp. After loading the new version, call `noConflict()` to\n// get a reference to it. At the same time the old version will be\n// returned to Backbone.Marionette.\nMarionette.noConflict = function() {\n  Backbone.Marionette = previousMarionette;\n  return this;\n};\n\n// Utilities\nMarionette.bindEvents = proxy(bindEvents);\nMarionette.unbindEvents = proxy(unbindEvents);\nMarionette.bindRequests = proxy(bindRequests);\nMarionette.unbindRequests = proxy(unbindRequests);\nMarionette.mergeOptions = proxy(mergeOptions);\nMarionette.getOption = proxy(getOption);\nMarionette.normalizeMethods = proxy(normalizeMethods);\nMarionette.extend = extend;\nMarionette.isNodeAttached = isNodeAttached;\nMarionette.deprecate = deprecate;\nMarionette.triggerMethod = proxy(triggerMethod);\nMarionette.triggerMethodOn = triggerMethodOn;\nMarionette.isEnabled = isEnabled;\nMarionette.setEnabled = setEnabled;\nMarionette.monitorViewEvents = monitorViewEvents;\n\nMarionette.Behaviors = {};\nMarionette.Behaviors.behaviorsLookup = behaviorsLookup;\n\n// Classes\nMarionette.Application = Application;\nMarionette.AppRouter = AppRouter;\nMarionette.Renderer = Renderer;\nMarionette.TemplateCache = TemplateCache;\nMarionette.View = View;\nMarionette.CollectionView = CollectionView;\nMarionette.NextCollectionView = NextCollectionView;\nMarionette.CompositeView = CompositeView;\nMarionette.Behavior = Behavior;\nMarionette.Region = Region;\nMarionette.Error = MarionetteError;\nMarionette.Object = MarionetteObject;\n\n// Configuration\nMarionette.DEV_MODE = false;\nMarionette.FEATURES = FEATURES;\nMarionette.VERSION = version;\nMarionette.DomApi = DomApi;\nMarionette.setDomApi = function(mixin) {\n  CollectionView.setDomApi(mixin);\n  CompositeView.setDomApi(mixin);\n  NextCollectionView.setDomApi(mixin);\n  Region.setDomApi(mixin);\n  View.setDomApi(mixin);\n};\n\nexport default Marionette;\n","import MarionetteError from '../error';\n\n// Placeholder method to be extended by the user.\n// The method should define the object that stores the behaviors.\n// i.e.\n//\n// ```js\n// Marionette.Behaviors.behaviorsLookup: function() {\n//   return App.Behaviors\n// }\n// ```\nexport default function behaviorsLookup() {\n  throw new MarionetteError({\n    message: 'You must define where your behaviors are stored.',\n    url: 'marionette.behaviors.md#behaviorslookup'\n  });\n}\n"]}
\ No newline at end of file
diff --git a/package.json b/package.json
index 4c531c1669..a29d94f889 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "backbone.marionette",
   "description": "The Backbone Framework",
-  "version": "3.5.0",
+  "version": "3.5.1",
   "homepage": "https://marionettejs.com/",
   "main": "lib/backbone.marionette.js",
   "keywords": [