/usr/share/gnome-shell/js/ui/xdndHandler.js is in gnome-shell-common 3.10.4-0ubuntu5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | // -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Lang = imports.lang;
const Main = imports.ui.main;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const DND = imports.ui.dnd;
const XdndHandler = new Lang.Class({
Name: 'XdndHandler',
_init: function() {
// Used to display a clone of the cursor window when the
// window group is hidden (like it happens in the overview)
this._cursorWindowClone = null;
// Used as a drag actor in case we don't have a cursor window clone
this._dummy = new Clutter.Actor({ width: 1, height: 1, opacity: 0 });
Main.uiGroup.add_actor(this._dummy);
this._dummy.hide();
if (!Meta.is_wayland_compositor())
global.init_xdnd();
global.connect('xdnd-enter', Lang.bind(this, this._onEnter));
global.connect('xdnd-position-changed', Lang.bind(this, this._onPositionChanged));
global.connect('xdnd-leave', Lang.bind(this, this._onLeave));
this._windowGroupVisibilityHandlerId = 0;
},
// Called when the user cancels the drag (i.e release the button)
_onLeave: function() {
if (this._windowGroupVisibilityHandlerId != 0) {
global.window_group.disconnect(this._windowGroupVisibilityHandlerId);
this._windowGroupVisibilityHandlerId = 0;
}
if (this._cursorWindowClone) {
this._cursorWindowClone.destroy();
this._cursorWindowClone = null;
}
this.emit('drag-end');
},
_onEnter: function() {
this._windowGroupVisibilityHandlerId =
global.window_group.connect('notify::visible',
Lang.bind(this, this._onWindowGroupVisibilityChanged));
this.emit('drag-begin', global.get_current_time());
},
_onWindowGroupVisibilityChanged: function() {
if (!global.window_group.visible) {
if (this._cursorWindowClone)
return;
let windows = global.get_window_actors();
let cursorWindow = windows[windows.length - 1];
// FIXME: more reliable way?
if (!cursorWindow.is_override_redirect())
return;
let constraint_position = new Clutter.BindConstraint({ coordinate : Clutter.BindCoordinate.POSITION,
source: cursorWindow});
this._cursorWindowClone = new Clutter.Clone({ source: cursorWindow });
Main.uiGroup.add_actor(this._cursorWindowClone);
// Make sure that the clone has the same position as the source
this._cursorWindowClone.add_constraint(constraint_position);
} else {
if (this._cursorWindowClone) {
this._cursorWindowClone.destroy();
this._cursorWindowClone = null;
}
}
},
_onPositionChanged: function(obj, x, y) {
let pickedActor = global.stage.get_actor_at_pos(Clutter.PickMode.REACTIVE, x, y);
// Make sure that the cursor window is on top
if (this._cursorWindowClone)
this._cursorWindowClone.raise_top();
let dragEvent = {
x: x,
y: y,
dragActor: this._cursorWindowClone ? this._cursorWindowClone : this._dummy,
source: this,
targetActor: pickedActor
};
for (let i = 0; i < DND.dragMonitors.length; i++) {
let motionFunc = DND.dragMonitors[i].dragMotion;
if (motionFunc) {
let result = motionFunc(dragEvent);
if (result != DND.DragMotionResult.CONTINUE)
return;
}
}
while (pickedActor) {
if (pickedActor._delegate && pickedActor._delegate.handleDragOver) {
let [r, targX, targY] = pickedActor.transform_stage_point(x, y);
let result = pickedActor._delegate.handleDragOver(this,
dragEvent.dragActor,
targX,
targY,
global.get_current_time());
if (result != DND.DragMotionResult.CONTINUE)
return;
}
pickedActor = pickedActor.get_parent();
}
}
});
Signals.addSignalMethods(XdndHandler.prototype);
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