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extension.js
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extension.js
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/* Desktop Icons GNOME Shell extension
*
* Copyright (C) 2017 Carlos Soriano <[email protected]>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* 001 2018/04/02 Rolf Fritz Buser <[email protected]>
* This is an emergency fork for poeple who desperately need to provide
* application launching desktop functionality on systems running
* Gnome 3.28. The corresponding work was speedily done without having
* contacted any Gnome developers (yet) and without prior knowledge of
* the internals of the gnome-shell. The extension now provides the
* required minimal functionality. Applications can be launched by
* clicking on them (in two ways) and .desktop files are now interpreted,
* meaning that the values from the Icon= Exec= and Name= directives
* are used instead of the default values. The work is of course not
* completed yet and changes might have to be made to comply with some
* guidelines I am not aware of yet. For instance, not having any idea yet
* how to register on the event system (probably some dbus thing) for
* changes on the users DESKTOP directory, I have temporarely set in
* place a refresh menu item. As soon as I have time I will send the
* patch to the gnome developers to check, whether it should be in one
* way or another merged into mainstream.
* 002 2018/04/03 Support added for audio and pdf preview thumbnails.
* 003 2018/04/03 Removed all restrictions on the lookup for preview
thumbnails.
*/
/*
* 1.07.2018 [email protected]
* Fixed drag and drop errors
* Fixed inaccurate opening of files/folders
* Fixed interaction with "Dash to Dock" extension delaying the load (i know, this is a bad fix)
*/
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Lang = imports.lang;
const St = imports.gi.St;
const Pango = imports.gi.Pango;
const Meta = imports.gi.Meta;
const Signals = imports.signals;
const Mainloop = imports.mainloop;
const Animation = imports.ui.animation;
const Background = imports.ui.background;
const Layout = imports.ui.layout;
const Main = imports.ui.main;
const Tweener = imports.ui.tweener;
const BoxPointer = imports.ui.boxpointer;
const PopupMenu = imports.ui.popupMenu;
const DND = imports.ui.dnd;
const ExtensionUtils = imports.misc.extensionUtils;
const Me = ExtensionUtils.getCurrentExtension();
const Queue = Me.imports.queue;
const Util = imports.misc.util;
const Gtk = imports.gi.Gtk;
const GnomeDesktop = imports.gi.GnomeDesktop;
const Convenience = Me.imports.convenience;
const ICON_SIZE = 64;
const ICON_MAX_WIDTH = 130;
const DRAG_TRESHOLD = 8;
const FileContainer = new Lang.Class (
{
Name: 'FileContainer',
_init: function (file, fileInfo)
{
let scaleFactor = St.ThemeContext.get_for_stage(global.stage).scale_factor;
this.file = file;
let savedCoordinates = fileInfo.get_attribute_as_string('metadata::nautilus-icon-position');
if (savedCoordinates != null)
{
this._coordinates = savedCoordinates.split(',')
.map(function (x)
{
return Number(x);
});
}
else
{
this._coordinates = [0, 0]
}
this.actor = new St.Bin({ visible:true });
this.actor.set_height(ICON_MAX_WIDTH);
this.actor.set_width(ICON_MAX_WIDTH);
this.actor._delegate = this;
let containerLayout = new Clutter.BoxLayout({ orientation: Clutter.Orientation.VERTICAL });
this._container = new St.Widget ({ layout_manager: containerLayout,
reactive: true,
track_hover: true,
can_focus: true,
style_class: 'file-container',
x_expand: true,
y_expand: true,
x_align: Clutter.ActorAlign.CENTER });
this.actor.add_actor(this._container);
let myIcon;
let labelName;
if (this.file.get_basename().slice(-8) == ".desktop"
&& GLib.file_test(this.file.get_path(),GLib.FileTest.IS_EXECUTABLE))
{
let iconFromIcon = findValueOf("Icon", String(this.file.load_contents(null)),false);
labelName = findValueOf("Name", String(this.file.load_contents(null)),false);
if(iconFromIcon != undefined)
{
let theme = Gtk.IconTheme.get_default();
if(theme.has_icon(iconFromIcon))
{
myIcon = Gio.ThemedIcon.new(iconFromIcon);
// this._icon.set_gicon(myIcon);
}
else
{
myIcon = Gio.icon_new_for_string(iconFromIcon);
}
}
}
else
{
for(let i=0;i<2 && myIcon==undefined;i++)
{
let tP = GnomeDesktop.desktop_thumbnail_path_for_uri(this.file.get_uri(),i);
let tF = Gio.File.new_for_path(tP);
if (tF.query_exists(null))
{
myIcon = Gio.icon_new_for_string(tP);
}
}
if(myIcon == undefined)
{
// we can help ourselves if images haven't been thumbnailed yet
let info = this.file.query_info("standard::icon,standard::content-type", 0, null);
if(info.get_content_type().indexOf("image") != -1)
{
myIcon=Gio.icon_new_for_string(this.file.get_path());
}
}
}
if(myIcon == undefined) myIcon = fileInfo.get_icon()
this._icon = new St.Icon({gicon: myIcon, icon_size: ICON_SIZE});
this._container.add_actor(this._icon);
if(labelName == undefined)
{
this._label = new St.Label({ text: fileInfo.get_attribute_as_string("standard::display-name"),
style_class: "name-label" });
}
else
{
this._label = new St.Label({ text: labelName,
style_class: "name-label" });
}
/* DEBUG
this._label = new St.Label({ text: JSON.stringify(this._coordinates),
style_class: "name-label" });
*/
this._container.add_actor(this._label);
let clutterText = this._label.get_clutter_text();
clutterText.set_line_wrap(true);
clutterText.set_line_wrap_mode(Pango.WrapMode.WORD_CHAR)
clutterText.set_ellipsize(Pango.EllipsizeMode.END);
this._container.connect("button-press-event", Lang.bind(this, this._onButtonPress));
this._container.connect("motion-event", Lang.bind(this, this._onMotion));
this._container.connect("button-release-event", Lang.bind(this, this._onButtonRelease));
this._createMenu();
this._selected = false;
},
_onOpenClicked: function()
{
if (this.file.get_basename().slice(-8) == ".desktop"
&& GLib.file_test(this.file.get_path(),GLib.FileTest.IS_EXECUTABLE))
{
let theProg = findValueOf("Exec", String(this.file.load_contents(null)),true);
if(theProg != undefined)
{
theProg = "sh -c '" + theProg + "'";
Util.spawnCommandLine(theProg);
return;
}
}
//Gio.app_info_launch_default_for_uri(this.file.get_uri(), global.create_app_launch_context(0,-1));
Gio.app_info_launch_default_for_uri(this.file.get_uri(), null);
},
/*
_onCopyClicked: function()
{
desktopManager.fileCopyClicked();
},
*/
_createMenu: function()
{
this._menuManager = new PopupMenu.PopupMenuManager({ actor: this.actor });
let side = St.Side.LEFT;
if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL)
{
side = St.Side.RIGHT;
}
this._menu = new PopupMenu.PopupMenu(this.actor, 0.5, side);
this._menu.addAction(_("Open"), Lang.bind(this, this._onOpenClicked));
/*
this._menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
this._menu.addAction(_("Copy"), Lang.bind(this, this._onCopyClicked));
*/
this._menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
this._menuManager.addMenu(this._menu);
Main.layoutManager.uiGroup.add_actor(this._menu.actor);
this._menu.actor.hide();
},
_onButtonPress: function(actor, event)
{
let button = event.get_button();
if (button == 3)
{
desktopManager.fileRightClickClicked(this);
this._menu.toggle();
return Clutter.EVENT_STOP;
}
if (button == 1)
{
desktopManager.fileLeftClickPressed(this, event);
let [x, y] = event.get_coords();
this._buttonPressed = true;
this._buttonPressInitialX = x;
this._buttonPressInitialY = y;
let clickTime = new Date().getTime();
if (clickTime - lastTime < clickPeriod && lastItem == this)
{
this._onOpenClicked();
lastItem = null;
lastTime = clickTime;
return Clutter.EVENT_STOP;
}
lastItem = this;
lastTime = clickTime;
return Clutter.EVENT_STOP;
}
return Clutter.EVENT_PROPAGATE;
},
_onMotion: function(actor, event)
{
let [x, y] = event.get_coords();
if(this._buttonPressed)
{
let xDiff = x - this._buttonPressInitialX;
let yDiff = y - this._buttonPressInitialY;
let distance = Math.sqrt(Math.pow(xDiff, 2) + Math.pow(yDiff, 2));
if(distance > DRAG_TRESHOLD)
{
// Don't need to track anymore this if we start drag, and also
// avoids reentrance here
this._buttonPressed = false
let event = Clutter.get_current_event();
let [x, y] = event.get_coords();
desktopManager.dragStart();
}
}
return Clutter.EVENT_PROPAGATE;
},
_onButtonRelease: function(event, actor)
{
this._buttonPressed = false
desktopManager.fileLeftClickReleased(this);
return Clutter.EVENT_PROPAGATE;
},
getCoordinates: function ()
{
return this._coordinates;
},
setCoordinates: function (x, y)
{
this._coordinates = [x, y];
/* DEBUG
this._label.set_text(JSON.stringify(this._coordinates));
*/
},
getInnerIconPosition: function()
{
return this._container.get_transformed_position();
},
getInnerSize: function()
{
return [this._container.width, this._container.height];
},
setSelected: function(selected)
{
if(selected)
{
this._container.add_style_pseudo_class('selected');
}
else
{
this._container.remove_style_pseudo_class('selected');
}
this._selected = selected;
}
});
Signals.addSignalMethods(FileContainer.prototype);
const DesktopContainer = new Lang.Class(
{
Name: 'DesktopContainer',
_init: function(bgManager)
{
this._bgManager = bgManager;
this._layout = new Clutter.GridLayout({ orientation: Clutter.Orientation.VERTICAL,
column_homogeneous: true,
row_homogeneous: true });
this.actor = new St.Widget({ name: "DesktopContainer",
layout_manager: this._layout,
reactive: true,
x_expand: true,
y_expand: true,
opacity: 255 });
this.actor._delegate = this;
this._bgManager._container.add_actor(this.actor);
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
let monitorIndex = bgManager._monitorIndex;
this._monitorConstraint = new Layout.MonitorConstraint({ index: monitorIndex,
work_area: true });
this.actor.add_constraint(this._monitorConstraint);
this._addDesktopBackgroundMenu();
this._bgDestroyedId = bgManager.backgroundActor.connect('destroy',
Lang.bind(this, this._backgroundDestroyed));
this.actor.connect('button-press-event', Lang.bind(this, this._onButtonPress));
this.actor.connect('button-release-event', Lang.bind(this, this._onButtonRelease));
this.actor.connect('motion-event', Lang.bind(this, this._onMotion));
this._rubberBand = new St.Widget({ style_class: "rubber-band" });
this._rubberBand.hide();
Main.layoutManager.uiGroup.add_actor(this._rubberBand);
this._fileContainers = [];
this._createPlaceholders();
},
_createPlaceholders: function()
{
let workarea = Main.layoutManager.getWorkAreaForMonitor(this._monitorConstraint.index);
let maxRows = Math.ceil(workarea.height / ICON_MAX_WIDTH);
let maxColumns = Math.ceil(workarea.width / ICON_MAX_WIDTH);
for (let i = 0; i < maxColumns; i++)
{
for (let j = 0; j < maxRows; j++)
{
let placeholder = new St.Bin({ width: ICON_MAX_WIDTH, height: ICON_MAX_WIDTH });
/* DEBUG
let icon = new St.Icon({ icon_name: 'window-restore-symbolic' });
placeholder.add_actor(icon);
*/
this._layout.attach(placeholder, i, j, 1, 1);
}
}
},
_backgroundDestroyed: function()
{
this._bgDestroyedId = 0;
if (this._bgManager == null)
{
return;
}
if (this._bgManager._backgroundSource) // background swapped
{
this._bgDestroyedId = this._bgManager.backgroundActor.connect('destroy',
Lang.bind(this, this._backgroundDestroyed));
}
else // bgManager destroyed
{
this.actor.destroy();
}
},
_onDestroy: function()
{
if (this._bgDestroyedId)
{
this._bgManager.backgroundActor.disconnect(this._bgDestroyedId);
}
this._bgDestroyedId = 0;
this._bgManager = null;
this._rubberBand.destroy();
},
/*
_onNewFolderClicked: function()
{
log("New folder clicked");
},
_onPasteClicked: function()
{
log("Paste clicked");
},
_onSelectAllClicked: function()
{
log("Select All clicked");
},
_onPropertiesClicked: function()
{
log("Properties clicked");
},
*/
_onRefreshClicked: function()
{
reload();
},
_createDesktopBackgroundMenu: function()
{
let menu = new PopupMenu.PopupMenu(Main.layoutManager.dummyCursor,
0, St.Side.TOP);
/*
menu.addAction(_("New Folder"), Lang.bind(this, this._onNewFolderClicked));
menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
menu.addAction(_("Paste"), Lang.bind(this, this._onPasteClicked));
menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
menu.addAction(_("Select All"), Lang.bind(this, this._onSelectAllClicked));
menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
menu.addAction(_("Properties"), Lang.bind(this, this._onPropertiesClicked));
*/
menu.addAction(_("Refresh"), Lang.bind(this, this._onRefreshClicked));
menu.actor.add_style_class_name('background-menu');
Main.layoutManager.uiGroup.add_actor(menu.actor);
menu.actor.hide();
return menu;
},
_openMenu: function(x, y)
{
Main.layoutManager.setDummyCursorGeometry(x, y, 0, 0);
this.actor._desktopBackgroundMenu.open(BoxPointer.PopupAnimation.NONE);
//TODO: Why does it need ignoreRelease?
this.actor._desktopBackgroundManager.ignoreRelease();
},
_drawRubberBand: function(currentX, currentY)
{
let x = this._rubberBandInitialX < currentX ? this._rubberBandInitialX
: currentX;
let y = this._rubberBandInitialY < currentY ? this._rubberBandInitialY
: currentY;
let width = Math.abs(this._rubberBandInitialX - currentX);
let height = Math.abs(this._rubberBandInitialY - currentY);
this._rubberBand.set_position(x, y);
this._rubberBand.set_size(width, height);
this._rubberBand.show();
},
_selectFromRubberband: function(currentX, currentY)
{
let rubberX = this._rubberBandInitialX < currentX ? this._rubberBandInitialX
: currentX;
let rubberY = this._rubberBandInitialY < currentY ? this._rubberBandInitialY
: currentY;
let rubberWidth = Math.abs(this._rubberBandInitialX - currentX);
let rubberHeight = Math.abs(this._rubberBandInitialY - currentY);
let selection = [];
for(let i = 0; i < this._fileContainers.length; i++)
{
let fileContainer = this._fileContainers[i];
let [containerX, containerY] = fileContainer.getInnerIconPosition();
let [containerWidth, containerHeight] = fileContainer.getInnerSize();
if(rectanglesIntersect(rubberX, rubberY, rubberWidth, rubberHeight,
containerX, containerY, containerWidth, containerHeight))
{
selection.push(fileContainer);
}
}
desktopManager.setSelection(selection);
},
addFileContainer: function(fileContainer, top, left)
{
this._fileContainers.push(fileContainer);
this._layout.attach(fileContainer.actor, top, left, 1, 1);
},
removeFileContainer: function(fileContainer)
{
let index = this._fileContainers.indexOf(fileContainer);
if(index > -1)
{
this._fileContainers.splice(index, 1);
}
else
{
log('Error removing children from container');
}
this.actor.remove_child(fileContainer.actor);
},
reset: function()
{
this._fileContainers = [];
this.actor.remove_all_children();
this._createPlaceholders();
},
_onMotion: function(actor, event)
{
let [x, y] = event.get_coords();
if(this._drawingRubberBand)
{
this._drawRubberBand(x, y);
this._selectFromRubberband(x, y);
}
},
_onButtonPress: function(actor, event)
{
let button = event.get_button();
let [x, y] = event.get_coords();
if (button == 1)
{
desktopManager.setSelection([]);
this._rubberBandInitialX = x;
this._rubberBandInitialY = y;
this._drawingRubberBand = true;
this._drawRubberBand(x, y);
return Clutter.EVENT_STOP;
}
if (button == 3)
{
this._openMenu(x, y);
return Clutter.EVENT_STOP;
}
return Clutter.EVENT_PROPAGATE;
},
_onButtonRelease: function(actor, event)
{
let button = event.get_button();
if (button == 1)
{
this._drawingRubberBand = false;
this._rubberBand.hide();
return Clutter.EVENT_STOP;
}
return Clutter.EVENT_PROPAGATE;
},
_addDesktopBackgroundMenu: function()
{
this.actor._desktopBackgroundMenu = this._createDesktopBackgroundMenu();
this.actor._desktopBackgroundManager = new PopupMenu.PopupMenuManager({ actor: this.actor });
this.actor._desktopBackgroundManager.addMenu(this.actor._desktopBackgroundMenu);
let grabOpBeginId = global.display.connect('grab-op-begin', Lang.bind(this, function () {
// this._iconsContainer._desktopBackgroundMenu.close(BoxPointer.PopupAnimation.NONE);
}));
this.actor.connect('destroy', Lang.bind (this, function() {
this.actor._desktopBackgroundMenu.destroy();
this.actor._desktopBackgroundMenu = null;
this.actor._desktopBackgroundManager = null;
global.display.disconnect(grabOpBeginId);
}));
},
findEmptyPlace: function(left, top)
{
let workarea = Main.layoutManager.getWorkAreaForMonitor(this._monitorConstraint.index);
let maxRows = Math.ceil(workarea.height / ICON_MAX_WIDTH);
let maxColumns = Math.ceil(workarea.width / ICON_MAX_WIDTH);
let bfsQueue = new Queue.Queue();
bfsQueue.enqueue([left, top]);
let bfsToVisit = [JSON.stringify([left, top])];
let iterations = 0;
while(!bfsQueue.isEmpty() && iterations < 1000)
{
let current = bfsQueue.dequeue();
let currentChild = this._layout.get_child_at(current[0], current[1]);
if(currentChild._delegate == undefined ||
!(currentChild._delegate instanceof FileContainer))
{
return [currentChild, current[0], current[1]];
}
let adjacents = [];
if(current[0] + 1 < maxColumns)
{
adjacents.push([current[0] + 1, current[1]]);
}
if(current[1] + 1 < maxRows)
{
adjacents.push([current[0], current[1] + 1]);
}
if(current[0] - 1 >= 0)
{
adjacents.push([current[0] - 1, current[1]]);
}
if(current[1] - 1 >= 0)
{
adjacents.push([current[0], current[1] - 1]);
}
for(let i = 0; i < adjacents.length; i++)
{
if(bfsToVisit.indexOf(JSON.stringify(adjacents[i])) < 0)
{
bfsQueue.enqueue(adjacents[i]);
bfsToVisit.push(JSON.stringify(adjacents[i]));
}
}
iterations++;
}
return null;
},
acceptDrop : function(source, actor, x, y, time)
{
desktopManager.acceptDrop(source, actor, x, y, time);
return true;
},
getPosOfFileContainer: function(childToFind)
{
if (childToFind == null)
{
log("Error at getPosOfFileContainer: child cannot be null");
return [false, -1, -1];
}
let children = this.actor.get_children();
let transformedPosition = this.actor.get_transformed_position();
let currentRow = 0;
let currentColumn = 0;
let child = this._layout.get_child_at(currentColumn, currentRow);
let found = false
while(child != null)
{
if (child._delegate != undefined &&
child._delegate.file.get_uri() == childToFind.file.get_uri())
{
found = true;
break;
}
currentColumn++;
child = this._layout.get_child_at(currentColumn, currentRow);
if(child == null)
{
currentColumn = 0;
currentRow++;
child = this._layout.get_child_at(currentColumn, currentRow);
}
}
return [found, currentColumn, currentRow];
},
});
const DesktopManager = new Lang.Class(
{
Name: 'DesktopManager',
_init: function()
{
this._settings = Convenience.getSettings();
this._loadSettings();
this._connectSettings();
this._layoutChildrenId = 0;
this._desktopEnumerateCancellable = null;
this._desktopContainers = [];
this._dragCancelled = false;
this._monitorsChangedId = Main.layoutManager.connect('monitors-changed', Lang.bind(this, this._addDesktopIcons));
this._startupPreparedId = Main.layoutManager.connect('startup-prepared', Lang.bind(this, this._addDesktopIcons));
this._addDesktopIcons();
this._selection = [];
this._onDrag = false;
this._dragXStart = Number.POSITIVE_INFINITY;
this._dragYStart = Number.POSITIVE_INFINITY;
this._setMetadataCancellable = new Gio.Cancellable();
},
_connectSettings: function() {
this._settings.connect(
'changed::hide-dotfiles', Lang.bind(this, this._toggleDotfiles)
);
},
_loadSettings: function() {
this._hidedotfiles = this._settings.get_boolean('hide-dotfiles');
},
_toggleDotfiles: function() {
this._loadSettings();
this._destroyDesktopIcons();
this._addDesktopIcons();
},
_addDesktopIcons: function()
{
this._destroyDesktopIcons();
forEachBackgroundManager(Lang.bind(this, function(bgManager)
{
this._desktopContainers.push(new DesktopContainer(bgManager));
}));
this._addFiles();
},
_destroyDesktopIcons: function()
{
this._desktopContainers.forEach(function(l) { l.actor.destroy(); });
this._desktopContainers = [];
},
_addFiles: function()
{
this._fileContainers = [];
if (this._desktopEnumerateCancellable)
{
this._desktopEnumerateCancellable.cancel();
}
this._desktopEnumerateCancellable = new Gio.Cancellable();
let desktopPath = GLib.get_user_special_dir(GLib.UserDirectory.DIRECTORY_DESKTOP)
let desktopDir = Gio.File.new_for_commandline_arg(desktopPath);
desktopDir.enumerate_children_async("metadata::*, standard::name,standard::type,standard::icon,standard::display-name",
Gio.FileQueryInfoFlags.NONE,
GLib.PRIORITY_DEFAULT,
this._desktopEnumerateCancellable,
Lang.bind (this, this._onDesktopEnumerateChildren));
},
_onDesktopEnumerateChildren: function(source, res)
{
let fileEnum;
try
{
fileEnum = source.enumerate_children_finish(res);
}
catch(error)
{
if(error.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED))
{
return;
}
else
{
log("Error loading Desktop files");
return;
}
}
let info;
while ((info = fileEnum.next_file(null)))
{
let file = fileEnum.get_child(info);
if(file!=null)
{
let fileContainer = new FileContainer(file, info);
if (!this._hidedotfiles)
this._fileContainers.push(fileContainer);
else if (!info.get_name().startsWith("."))
this._fileContainers.push(fileContainer);
}
else
{
log("Skipping unexpected null file");
}
}
this._desktopContainers.forEach(Lang.bind(this,
function(item, index)
{
item.actor.connect('allocation-changed', Lang.bind(this, this._scheduleLayoutChildren));
}));
this._scheduleLayoutChildren();
},
_setupDnD: function()
{
this._draggableContainer = new St.Widget({ layout_manager: new Clutter.FixedLayout(),
visible: true ,
width: 1,
height: 1,
x: 0,
y: 0,
style_class: 'dragabble' });
this._draggableContainer._delegate = this;
this._draggable = DND.makeDraggable(this._draggableContainer,
{ manualMode: true,
dragActorOpacity: 100 });
this._draggable.connect("drag-cancelled", Lang.bind(this, this._onDragCancelled));
this._draggable.connect("drag-end", Lang.bind(this, this._onDragEnd));
this._draggable['_dragActorDropped'] = Lang.bind(this, this._dragActorDropped);
this._draggable['_finishAnimation'] = Lang.bind(this, this._finishAnimation);
},
dragStart: function()
{
if(this._onDrag)
{
return;
}
this._setupDnD();
let event = Clutter.get_current_event();
let [x, y] = event.get_coords();
[this._dragXStart, this._dragYStart] = event.get_coords();
this._onDrag = true;
for(let i = 0; i < this._selection.length; i++)
{
let fileContainer = this._selection[i];
let clone = new Clutter.Clone({ source: this._selection[i].actor,
reactive: false });
clone.x = this._selection[i].actor.get_transformed_position()[0];
clone.y = this._selection[i].actor.get_transformed_position()[1];
this._draggableContainer.add_actor(clone);
}
let desktopContainer = null;
for(let i = 0; i < this._desktopContainers.length; i++)
{
let children = this._desktopContainers[i].actor.get_children();
if(this._selection.length > 0 && children.indexOf(this._selection[0].actor) != -1)
{
desktopContainer = this._desktopContainers[i];
break;
}
}
if(desktopContainer == null)
{
log("Error in DnD searching for the container of the dragged item");
return;
}
Main.layoutManager.uiGroup.add_child(this._draggableContainer);
this._draggable.startDrag(x, y, global.get_current_time(), event.get_event_sequence());
},
_onDragCancelled: function()
{
let event = Clutter.get_current_event();
let [x, y] = event.get_coords();
this._dragCancelled = true;
},
_onDragEnd: function()
{
this._onDrag = false;
Main.layoutManager.uiGroup.remove_child(this._draggableContainer);
},
_finishAnimation : function () {
if (!this._draggable._animationInProgress)
return;
this._draggable._animationInProgress = false;
if (!this._draggable._buttonDown)
this._draggable._dragComplete();
global.screen.set_cursor(Meta.Cursor.DEFAULT);
},
_dragActorDropped: function(event) {
let [dropX, dropY] = event.get_coords();
let target = this._draggable._dragActor.get_stage().get_actor_at_pos(Clutter.PickMode.ALL,
dropX, dropY);
// We call observers only once per motion with the innermost
// target actor. If necessary, the observer can walk the
// parent itself.
let dropEvent = {
dropActor: this._draggable._dragActor,
targetActor: target,
clutterEvent: event
};
for (let i = 0; i < DND.dragMonitors.length; i++) {
let dropFunc = DND.dragMonitors[i].dragDrop;
if (dropFunc)
switch (dropFunc(dropEvent)) {
case DragDropResult.FAILURE:
case DragDropResult.SUCCESS:
return true;
case DragDropResult.CONTINUE:
continue;
}
}
// At this point it is too late to cancel a drag by destroying
// the actor, the fate of which is decided by acceptDrop and its
// side-effects
this._draggable._dragCancellable = false;
let destroyActor = false;
while (target) {
if (target._delegate && target._delegate.acceptDrop) {
let [r, targX, targY] = target.transform_stage_point(dropX, dropY);
if (target._delegate.acceptDrop(this._draggable.actor._delegate,
this._draggable._dragActor,
targX,
targY,
event.get_time())) {
// If it accepted the drop without taking the actor,
// handle it ourselves.
if (this._draggable._dragActor.get_parent() == Main.uiGroup) {
if (this._draggable._restoreOnSuccess) {
this._draggable._restoreDragActor(event.get_time());
return true;
} else {
// We need this in order to make sure drag-end is fired
destroyActor = true;
}
}
this._draggable._dragInProgress = false;
global.screen.set_cursor(Meta.Cursor.DEFAULT);
this._draggable.emit('drag-end', event.get_time(), true);