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workspaceThumbnail: clear the drop placeholder on pointer leave

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We add a drag monitor to check whether the pointer is inside
the workspace selector, and update the visibility of the drop
placeholder consequently.

https://bugzilla.gnome.org/show_bug.cgi?id=664201
This commit is contained in:
Stefano Facchini 2011-11-27 16:23:17 +01:00 committed by Florian Müllner
parent 235cb9c505
commit f59018f2d7
1 changed files with 53 additions and 0 deletions
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53
js/ui/workspaceThumbnail.js
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@ -528,6 +528,59 @@ const ThumbnailsBox = new Lang.Class({
this._stateCounts[ThumbnailState[key]] = 0;
this._thumbnails = [];
Main.overview.connect('item-drag-begin',
Lang.bind(this, this._onDragBegin));
Main.overview.connect('item-drag-end',
Lang.bind(this, this._onDragEnd));
Main.overview.connect('item-drag-cancelled',
Lang.bind(this, this._onDragCancelled));
Main.overview.connect('window-drag-begin',
Lang.bind(this, this._onDragBegin));
Main.overview.connect('window-drag-end',
Lang.bind(this, this._onDragEnd));
Main.overview.connect('window-drag-cancelled',
Lang.bind(this, this._onDragCancelled));
},
_onDragBegin: function() {
this._dragCancelled = false;
this._dragMonitor = {
dragMotion: Lang.bind(this, this._onDragMotion)
};
DND.addDragMonitor(this._dragMonitor);
},
_onDragEnd: function() {
if (this._dragCancelled)
return;
this._endDrag();
},
_onDragCancelled: function() {
this._dragCancelled = true;
this._endDrag();
},
_endDrag: function() {
this._clearDragPlaceholder();
DND.removeDragMonitor(this._dragMonitor);
},
_onDragMotion: function(dragEvent) {
if (!this.actor.contains(dragEvent.targetActor))
this._onLeave();
return DND.DragMotionResult.CONTINUE;
},
_onLeave: function() {
this._clearDragPlaceholder();
},
_clearDragPlaceholder: function() {
this._dropPlaceholderPos = -1;
this.actor.queue_relayout();
},
// Draggable target interface