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select2.js
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/*
Copyright 2012 Igor Vaynberg
Version: @@ver@@ Timestamp: @@timestamp@@
This software is licensed under the Apache License, Version 2.0 (the "Apache License") or the GNU
General Public License version 2 (the "GPL License"). You may choose either license to govern your
use of this software only upon the condition that you accept all of the terms of either the Apache
License or the GPL License.
You may obtain a copy of the Apache License and the GPL License at:
http://www.apache.org/licenses/LICENSE-2.0
http://www.gnu.org/licenses/gpl-2.0.html
Unless required by applicable law or agreed to in writing, software distributed under the
Apache License or the GPL Licesnse is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the Apache License and the GPL License for
the specific language governing permissions and limitations under the Apache License and the GPL License.
*/
(function ($) {
if(typeof $.fn.each2 == "undefined") {
$.fn.extend({
/*
* 4-10 times faster .each replacement
* use it carefully, as it overrides jQuery context of element on each iteration
*/
each2 : function (c) {
var j = $([0]), i = -1, l = this.length;
while (
++i < l
&& (j.context = j[0] = this[i])
&& c.call(j[0], i, j) !== false //"this"=DOM, i=index, j=jQuery object
);
return this;
}
});
}
})(jQuery);
(function ($, undefined) {
"use strict";
/*global document, window, jQuery, console */
if (window.Select2 !== undefined) {
return;
}
var KEY, AbstractSelect2, SingleSelect2, MultiSelect2, nextUid, sizer,
lastMousePosition={x:0,y:0}, $document, scrollBarDimensions,
KEY = {
TAB: 9,
ENTER: 13,
ESC: 27,
SPACE: 32,
LEFT: 37,
UP: 38,
RIGHT: 39,
DOWN: 40,
SHIFT: 16,
CTRL: 17,
ALT: 18,
PAGE_UP: 33,
PAGE_DOWN: 34,
HOME: 36,
END: 35,
BACKSPACE: 8,
DELETE: 46,
isArrow: function (k) {
k = k.which ? k.which : k;
switch (k) {
case KEY.LEFT:
case KEY.RIGHT:
case KEY.UP:
case KEY.DOWN:
return true;
}
return false;
},
isControl: function (e) {
var k = e.which;
switch (k) {
case KEY.SHIFT:
case KEY.CTRL:
case KEY.ALT:
return true;
}
if (e.metaKey) return true;
return false;
},
isFunctionKey: function (k) {
k = k.which ? k.which : k;
return k >= 112 && k <= 123;
}
},
MEASURE_SCROLLBAR_TEMPLATE = "<div class='select2-measure-scrollbar'></div>",
DIACRITICS = 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function stripDiacritics(str) {
var ret, i, l, c;
if (!str || str.length < 1) return str;
ret = "";
for (i = 0, l = str.length; i < l; i++) {
c = str.charAt(i);
ret += DIACRITICS[c] || c;
}
return ret;
}
function indexOf(value, array) {
var i = 0, l = array.length;
for (; i < l; i = i + 1) {
if (equal(value, array[i])) return i;
}
return -1;
}
function measureScrollbar () {
var $template = $( MEASURE_SCROLLBAR_TEMPLATE );
$template.appendTo('body');
var dim = {
width: $template.width() - $template[0].clientWidth,
height: $template.height() - $template[0].clientHeight
};
$template.remove();
return dim;
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* @param b
*/
function equal(a, b) {
if (a === b) return true;
if (a === undefined || b === undefined) return false;
if (a === null || b === null) return false;
// Check whether 'a' or 'b' is a string (primitive or object).
// The concatenation of an empty string (+'') converts its argument to a string's primitive.
if (a.constructor === String) return a+'' === b+''; // a+'' - in case 'a' is a String object
if (b.constructor === String) return b+'' === a+''; // b+'' - in case 'b' is a String object
return false;
}
/**
* Splits the string into an array of values, trimming each value. An empty array is returned for nulls or empty
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* @param string
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*/
function splitVal(string, separator) {
var val, i, l;
if (string === null || string.length < 1) return [];
val = string.split(separator);
for (i = 0, l = val.length; i < l; i = i + 1) val[i] = $.trim(val[i]);
return val;
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function getSideBorderPadding(element) {
return element.outerWidth(false) - element.width();
}
function installKeyUpChangeEvent(element) {
var key="keyup-change-value";
element.on("keydown", function () {
if ($.data(element, key) === undefined) {
$.data(element, key, element.val());
}
});
element.on("keyup", function () {
var val= $.data(element, key);
if (val !== undefined && element.val() !== val) {
$.removeData(element, key);
element.trigger("keyup-change");
}
});
}
$document.on("mousemove", function (e) {
lastMousePosition.x = e.pageX;
lastMousePosition.y = e.pageY;
});
/**
* filters mouse events so an event is fired only if the mouse moved.
*
* filters out mouse events that occur when mouse is stationary but
* the elements under the pointer are scrolled.
*/
function installFilteredMouseMove(element) {
element.on("mousemove", function (e) {
var lastpos = lastMousePosition;
if (lastpos === undefined || lastpos.x !== e.pageX || lastpos.y !== e.pageY) {
$(e.target).trigger("mousemove-filtered", e);
}
});
}
/**
* Debounces a function. Returns a function that calls the original fn function only if no invocations have been made
* within the last quietMillis milliseconds.
*
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* @param fn function to be debounced
* @param ctx object to be used as this reference within fn
* @return debounced version of fn
*/
function debounce(quietMillis, fn, ctx) {
ctx = ctx || undefined;
var timeout;
return function () {
var args = arguments;
window.clearTimeout(timeout);
timeout = window.setTimeout(function() {
fn.apply(ctx, args);
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/**
* A simple implementation of a thunk
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* @return {Function}
*/
function thunk(formula) {
var evaluated = false,
value;
return function() {
if (evaluated === false) { value = formula(); evaluated = true; }
return value;
};
};
function installDebouncedScroll(threshold, element) {
var notify = debounce(threshold, function (e) { element.trigger("scroll-debounced", e);});
element.on("scroll", function (e) {
if (indexOf(e.target, element.get()) >= 0) notify(e);
});
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function focus($el) {
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of the current event has finished - which seems like the only reliable way
to set focus */
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$el.focus();
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sometimes modals or others listeners may steal it after its set */
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var length = 0;
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length = el.selectionEnd - offset;
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el.focus();
var sel = document.selection.createRange();
length = document.selection.createRange().text.length;
sel.moveStart('character', -el.value.length);
offset = sel.text.length - length;
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}
function killEvent(event) {
event.preventDefault();
event.stopPropagation();
}
function killEventImmediately(event) {
event.preventDefault();
event.stopImmediatePropagation();
}
function measureTextWidth(e) {
if (!sizer){
var style = e[0].currentStyle || window.getComputedStyle(e[0], null);
sizer = $(document.createElement("div")).css({
position: "absolute",
left: "-10000px",
top: "-10000px",
display: "none",
fontSize: style.fontSize,
fontFamily: style.fontFamily,
fontStyle: style.fontStyle,
fontWeight: style.fontWeight,
letterSpacing: style.letterSpacing,
textTransform: style.textTransform,
whiteSpace: "nowrap"
});
sizer.attr("class","select2-sizer");
$("body").append(sizer);
}
sizer.text(e.val());
return sizer.width();
}
function syncCssClasses(dest, src, adapter) {
var classes, replacements = [], adapted;
classes = dest.attr("class");
if (classes) {
classes = '' + classes; // for IE which returns object
$(classes.split(" ")).each2(function() {
if (this.indexOf("select2-") === 0) {
replacements.push(this);
}
});
}
classes = src.attr("class");
if (classes) {
classes = '' + classes; // for IE which returns object
$(classes.split(" ")).each2(function() {
if (this.indexOf("select2-") !== 0) {
adapted = adapter(this);
if (adapted) {
replacements.push(this);
}
}
});
}
dest.attr("class", replacements.join(" "));
}
function markMatch(text, term, markup, escapeMarkup) {
var match=stripDiacritics(text.toUpperCase()).indexOf(stripDiacritics(term.toUpperCase())),
tl=term.length;
if (match<0) {
markup.push(escapeMarkup(text));
return;
}
markup.push(escapeMarkup(text.substring(0, match)));
markup.push("<span class='select2-match'>");
markup.push(escapeMarkup(text.substring(match, match + tl)));
markup.push("</span>");
markup.push(escapeMarkup(text.substring(match + tl, text.length)));
}
function defaultEscapeMarkup(markup) {
var replace_map = {
'\\': '\',
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": ''',
"/": '/'
};
return String(markup).replace(/[&<>"'\/\\]/g, function (match) {
return replace_map[match];
});
}
/**
* Produces an ajax-based query function
*
* @param options object containing configuration paramters
* @param options.params parameter map for the transport ajax call, can contain such options as cache, jsonpCallback, etc. see $.ajax
* @param options.transport function that will be used to execute the ajax request. must be compatible with parameters supported by $.ajax
* @param options.url url for the data
* @param options.data a function(searchTerm, pageNumber, context) that should return an object containing query string parameters for the above url.
* @param options.dataType request data type: ajax, jsonp, other datatatypes supported by jQuery's $.ajax function or the transport function if specified
* @param options.quietMillis (optional) milliseconds to wait before making the ajaxRequest, helps debounce the ajax function if invoked too often
* @param options.results a function(remoteData, pageNumber) that converts data returned form the remote request to the format expected by Select2.
* The expected format is an object containing the following keys:
* results array of objects that will be used as choices
* more (optional) boolean indicating whether there are more results available
* Example: {results:[{id:1, text:'Red'},{id:2, text:'Blue'}], more:true}
*/
function ajax(options) {
var timeout, // current scheduled but not yet executed request
handler = null,
quietMillis = options.quietMillis || 100,
ajaxUrl = options.url,
self = this;
return function (query) {
window.clearTimeout(timeout);
timeout = window.setTimeout(function () {
var data = options.data, // ajax data function
url = ajaxUrl, // ajax url string or function
transport = options.transport || $.fn.select2.ajaxDefaults.transport,
// deprecated - to be removed in 4.0 - use params instead
deprecated = {
type: options.type || 'GET', // set type of request (GET or POST)
cache: options.cache || false,
jsonpCallback: options.jsonpCallback||undefined,
dataType: options.dataType||"json"
},
params = $.extend({}, $.fn.select2.ajaxDefaults.params, deprecated);
data = data ? data.call(self, query.term, query.page, query.context) : null;
url = (typeof url === 'function') ? url.call(self, query.term, query.page, query.context) : url;
if (handler) { handler.abort(); }
if (options.params) {
if ($.isFunction(options.params)) {
$.extend(params, options.params.call(self));
} else {
$.extend(params, options.params);
}
}
$.extend(params, {
url: url,
dataType: options.dataType,
data: data,
success: function (data) {
// TODO - replace query.page with query so users have access to term, page, etc.
var results = options.results(data, query.page);
query.callback(results);
}
});
handler = transport.call(self, params);
}, quietMillis);
};
}
/**
* Produces a query function that works with a local array
*
* @param options object containing configuration parameters. The options parameter can either be an array or an
* object.
*
* If the array form is used it is assumed that it contains objects with 'id' and 'text' keys.
*
* If the object form is used ti is assumed that it contains 'data' and 'text' keys. The 'data' key should contain
* an array of objects that will be used as choices. These objects must contain at least an 'id' key. The 'text'
* key can either be a String in which case it is expected that each element in the 'data' array has a key with the
* value of 'text' which will be used to match choices. Alternatively, text can be a function(item) that can extract
* the text.
*/
function local(options) {
var data = options, // data elements
dataText,
tmp,
text = function (item) { return ""+item.text; }; // function used to retrieve the text portion of a data item that is matched against the search
if ($.isArray(data)) {
tmp = data;
data = { results: tmp };
}
if ($.isFunction(data) === false) {
tmp = data;
data = function() { return tmp; };
}
var dataItem = data();
if (dataItem.text) {
text = dataItem.text;
// if text is not a function we assume it to be a key name
if (!$.isFunction(text)) {
dataText = dataItem.text; // we need to store this in a separate variable because in the next step data gets reset and data.text is no longer available
text = function (item) { return item[dataText]; };
}
}
return function (query) {
var t = query.term, filtered = { results: [] }, process;
if (t === "") {
query.callback(data());
return;
}
process = function(datum, collection) {
var group, attr;
datum = datum[0];
if (datum.children) {
group = {};
for (attr in datum) {
if (datum.hasOwnProperty(attr)) group[attr]=datum[attr];
}
group.children=[];
$(datum.children).each2(function(i, childDatum) { process(childDatum, group.children); });
if (group.children.length || query.matcher(t, text(group), datum)) {
collection.push(group);
}
} else {
if (query.matcher(t, text(datum), datum)) {
collection.push(datum);
}
}
};
$(data().results).each2(function(i, datum) { process(datum, filtered.results); });
query.callback(filtered);
};
}
// TODO javadoc
function tags(data) {
var isFunc = $.isFunction(data);
return function (query) {
var t = query.term, filtered = {results: []};
$(isFunc ? data() : data).each(function () {
var isObject = this.text !== undefined,
text = isObject ? this.text : this;
if (t === "" || query.matcher(t, text)) {
filtered.results.push(isObject ? this : {id: this, text: this});
}
});
query.callback(filtered);
};
}
/**
* Checks if the formatter function should be used.
*
* Throws an error if it is not a function. Returns true if it should be used,
* false if no formatting should be performed.
*
* @param formatter
*/
function checkFormatter(formatter, formatterName) {
if ($.isFunction(formatter)) return true;
if (!formatter) return false;
throw new Error(formatterName +" must be a function or a falsy value");
}
function evaluate(val) {
return $.isFunction(val) ? val() : val;
}
function countResults(results) {
var count = 0;
$.each(results, function(i, item) {
if (item.children) {
count += countResults(item.children);
} else {
count++;
}
});
return count;
}
/**
* Default tokenizer. This function uses breaks the input on substring match of any string from the
* opts.tokenSeparators array and uses opts.createSearchChoice to create the choice object. Both of those
* two options have to be defined in order for the tokenizer to work.
*
* @param input text user has typed so far or pasted into the search field
* @param selection currently selected choices
* @param selectCallback function(choice) callback tho add the choice to selection
* @param opts select2's opts
* @return undefined/null to leave the current input unchanged, or a string to change the input to the returned value
*/
function defaultTokenizer(input, selection, selectCallback, opts) {
var original = input, // store the original so we can compare and know if we need to tell the search to update its text
dupe = false, // check for whether a token we extracted represents a duplicate selected choice
token, // token
index, // position at which the separator was found
i, l, // looping variables
separator; // the matched separator
if (!opts.createSearchChoice || !opts.tokenSeparators || opts.tokenSeparators.length < 1) return undefined;
while (true) {
index = -1;
for (i = 0, l = opts.tokenSeparators.length; i < l; i++) {
separator = opts.tokenSeparators[i];
index = input.indexOf(separator);
if (index >= 0) break;
}
if (index < 0) break; // did not find any token separator in the input string, bail
token = input.substring(0, index);
input = input.substring(index + separator.length);
if (token.length > 0) {
token = opts.createSearchChoice.call(this, token, selection);
if (token !== undefined && token !== null && opts.id(token) !== undefined && opts.id(token) !== null) {
dupe = false;
for (i = 0, l = selection.length; i < l; i++) {
if (equal(opts.id(token), opts.id(selection[i]))) {
dupe = true; break;
}
}
if (!dupe) selectCallback(token);
}
}
}
if (original!==input) return input;
}
/**
* Creates a new class
*
* @param superClass
* @param methods
*/
function clazz(SuperClass, methods) {
var constructor = function () {};
constructor.prototype = new SuperClass;
constructor.prototype.constructor = constructor;
constructor.prototype.parent = SuperClass.prototype;
constructor.prototype = $.extend(constructor.prototype, methods);
return constructor;
}
AbstractSelect2 = clazz(Object, {
// abstract
bind: function (func) {
var self = this;
return function () {
func.apply(self, arguments);
};
},
// abstract
init: function (opts) {
var results, search, resultsSelector = ".select2-results", disabled, readonly;
// prepare options
this.opts = opts = this.prepareOpts(opts);
this.id=opts.id;
// destroy if called on an existing component
if (opts.element.data("select2") !== undefined &&
opts.element.data("select2") !== null) {
opts.element.data("select2").destroy();
}
this.container = this.createContainer();
this.containerId="s2id_"+(opts.element.attr("id") || "autogen"+nextUid());
this.containerSelector="#"+this.containerId.replace(/([;&,\.\+\*\~':"\!\^#$%@\[\]\(\)=>\|])/g, '\\$1');
this.container.attr("id", this.containerId);
// cache the body so future lookups are cheap
this.body = thunk(function() { return opts.element.closest("body"); });
syncCssClasses(this.container, this.opts.element, this.opts.adaptContainerCssClass);
this.container.attr("style", opts.element.attr("style"));
this.container.css(evaluate(opts.containerCss));
this.container.addClass(evaluate(opts.containerCssClass));
this.elementTabIndex = this.opts.element.attr("tabindex");
// swap container for the element
this.opts.element
.data("select2", this)
.attr("tabindex", "-1")
.before(this.container);
this.container.data("select2", this);
this.dropdown = this.container.find(".select2-drop");
this.dropdown.addClass(evaluate(opts.dropdownCssClass));
this.dropdown.data("select2", this);
this.results = results = this.container.find(resultsSelector);
this.search = search = this.container.find("input.select2-input");
this.queryCount = 0;
this.resultsPage = 0;
this.context = null;
// initialize the container
this.initContainer();
installFilteredMouseMove(this.results);
this.dropdown.on("mousemove-filtered touchstart touchmove touchend", resultsSelector, this.bind(this.highlightUnderEvent));
installDebouncedScroll(80, this.results);
this.dropdown.on("scroll-debounced", resultsSelector, this.bind(this.loadMoreIfNeeded));
// do not propagate change event from the search field out of the component
$(this.container).on("change", ".select2-input", function(e) {e.stopPropagation();});
$(this.dropdown).on("change", ".select2-input", function(e) {e.stopPropagation();});
// if jquery.mousewheel plugin is installed we can prevent out-of-bounds scrolling of results via mousewheel
if ($.fn.mousewheel) {
results.mousewheel(function (e, delta, deltaX, deltaY) {
var top = results.scrollTop(), height;
if (deltaY > 0 && top - deltaY <= 0) {
results.scrollTop(0);
killEvent(e);
} else if (deltaY < 0 && results.get(0).scrollHeight - results.scrollTop() + deltaY <= results.height()) {
results.scrollTop(results.get(0).scrollHeight - results.height());
killEvent(e);
}
});
}
installKeyUpChangeEvent(search);
search.on("keyup-change input paste", this.bind(this.updateResults));
search.on("focus", function () { search.addClass("select2-focused"); });
search.on("blur", function () { search.removeClass("select2-focused");});
this.dropdown.on("mouseup", resultsSelector, this.bind(function (e) {
if ($(e.target).closest(".select2-result-selectable").length > 0) {
this.highlightUnderEvent(e);
this.selectHighlighted(e);
}
}));
// trap all mouse events from leaving the dropdown. sometimes there may be a modal that is listening
// for mouse events outside of itself so it can close itself. since the dropdown is now outside the select2's
// dom it will trigger the popup close, which is not what we want
this.dropdown.on("click mouseup mousedown", function (e) { e.stopPropagation(); });
if ($.isFunction(this.opts.initSelection)) {
// initialize selection based on the current value of the source element
this.initSelection();
// if the user has provided a function that can set selection based on the value of the source element
// we monitor the change event on the element and trigger it, allowing for two way synchronization
this.monitorSource();
}
if (opts.maximumInputLength !== null) {
this.search.attr("maxlength", opts.maximumInputLength);
}
var disabled = opts.element.prop("disabled");
if (disabled === undefined) disabled = false;
this.enable(!disabled);
var readonly = opts.element.prop("readonly");
if (readonly === undefined) readonly = false;
this.readonly(readonly);
// Calculate size of scrollbar
scrollBarDimensions = scrollBarDimensions || measureScrollbar();
this.autofocus = opts.element.prop("autofocus");
opts.element.prop("autofocus", false);
if (this.autofocus) this.focus();
},
// abstract
destroy: function () {
var element=this.opts.element, select2 = element.data("select2");
if (this.propertyObserver) { delete this.propertyObserver; this.propertyObserver = null; }
if (select2 !== undefined) {
select2.container.remove();
select2.dropdown.remove();
element
.removeClass("select2-offscreen")
.removeData("select2")
.off(".select2")
.prop("autofocus", this.autofocus || false);
if (this.elementTabIndex) {
element.attr({tabindex: this.elementTabIndex});
} else {
element.removeAttr("tabindex");
}
element.show();
}
},
// abstract
optionToData: function(element) {
if (element.is("option")) {
return {
id:element.prop("value"),
text:element.text(),
element: element.get(),
css: element.attr("class"),
disabled: element.prop("disabled"),
locked: equal(element.attr("locked"), "locked") || equal(element.data("locked"), true)
};
} else if (element.is("optgroup")) {
return {
text:element.attr("label"),
children:[],
element: element.get(),
css: element.attr("class")
};
}
},
// abstract
prepareOpts: function (opts) {
var element, select, idKey, ajaxUrl, self = this;
element = opts.element;
if (element.get(0).tagName.toLowerCase() === "select") {
this.select = select = opts.element;
}
if (select) {
// these options are not allowed when attached to a select because they are picked up off the element itself
$.each(["id", "multiple", "ajax", "query", "createSearchChoice", "initSelection", "data", "tags"], function () {
if (this in opts) {
throw new Error("Option '" + this + "' is not allowed for Select2 when attached to a <select> element.");
}
});
}
opts = $.extend({}, {
populateResults: function(container, results, query) {
var populate, data, result, children, id=this.opts.id;
populate=function(results, container, depth) {
var i, l, result, selectable, disabled, compound, node, label, innerContainer, formatted;
results = opts.sortResults(results, container, query);
for (i = 0, l = results.length; i < l; i = i + 1) {
result=results[i];
disabled = (result.disabled === true);
selectable = (!disabled) && (id(result) !== undefined);
compound=result.children && result.children.length > 0;
node=$("<li></li>");
node.addClass("select2-results-dept-"+depth);
node.addClass("select2-result");
node.addClass(selectable ? "select2-result-selectable" : "select2-result-unselectable");
if (disabled) { node.addClass("select2-disabled"); }
if (compound) { node.addClass("select2-result-with-children"); }
node.addClass(self.opts.formatResultCssClass(result));
label=$(document.createElement("div"));
label.addClass("select2-result-label");
formatted=opts.formatResult(result, label, query, self.opts.escapeMarkup);
if (formatted!==undefined) {
label.html(formatted);
}
node.append(label);
if (compound) {
innerContainer=$("<ul></ul>");
innerContainer.addClass("select2-result-sub");
populate(result.children, innerContainer, depth+1);
node.append(innerContainer);
}
node.data("select2-data", result);
container.append(node);
}
};
populate(results, container, 0);
}
}, $.fn.select2.defaults, opts);
if (typeof(opts.id) !== "function") {
idKey = opts.id;
opts.id = function (e) { return e[idKey]; };
}
if ($.isArray(opts.element.data("select2Tags"))) {
if ("tags" in opts) {
throw "tags specified as both an attribute 'data-select2-tags' and in options of Select2 " + opts.element.attr("id");
}
opts.tags=opts.element.data("select2Tags");
}
if (select) {
opts.query = this.bind(function (query) {
var data = { results: [], more: false },
term = query.term,
children, placeholderOption, process;
process=function(element, collection) {
var group;
if (element.is("option")) {
if (query.matcher(term, element.text(), element)) {
collection.push(self.optionToData(element));
}
} else if (element.is("optgroup")) {
group=self.optionToData(element);
element.children().each2(function(i, elm) { process(elm, group.children); });
if (group.children.length>0) {
collection.push(group);
}
}
};
children=element.children();
// ignore the placeholder option if there is one
if (this.getPlaceholder() !== undefined && children.length > 0) {
placeholderOption = this.getPlaceholderOption();
if (placeholderOption) {
children=children.not(placeholderOption);
}
}
children.each2(function(i, elm) { process(elm, data.results); });
query.callback(data);
});
// this is needed because inside val() we construct choices from options and there id is hardcoded
opts.id=function(e) { return e.id; };
opts.formatResultCssClass = function(data) { return data.css; };
} else {
if (!("query" in opts)) {
if ("ajax" in opts) {
ajaxUrl = opts.element.data("ajax-url");
if (ajaxUrl && ajaxUrl.length > 0) {
opts.ajax.url = ajaxUrl;
}
opts.query = ajax.call(opts.element, opts.ajax);
} else if ("data" in opts) {
opts.query = local(opts.data);
} else if ("tags" in opts) {
opts.query = tags(opts.tags);
if (opts.createSearchChoice === undefined) {
opts.createSearchChoice = function (term) { return {id: $.trim(term), text: $.trim(term)}; };
}
if (opts.initSelection === undefined) {
opts.initSelection = function (element, callback) {
var data = [];
$(splitVal(element.val(), opts.separator)).each(function () {
var id = this, text = this, tags=opts.tags;
if ($.isFunction(tags)) tags=tags();
$(tags).each(function() { if (equal(this.id, id)) { text = this.text; return false; } });
data.push({id: id, text: text});
});
callback(data);
};
}
}
}
}
if (typeof(opts.query) !== "function") {
throw "query function not defined for Select2 " + opts.element.attr("id");
}
return opts;
},
/**
* Monitor the original element for changes and update select2 accordingly
*/
// abstract
monitorSource: function () {
var el = this.opts.element, sync;
el.on("change.select2", this.bind(function (e) {
if (this.opts.element.data("select2-change-triggered") !== true) {
this.initSelection();
}
}));
sync = this.bind(function () {
var enabled, readonly, self = this;