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workspace: Fix tab navigation order

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By default the focus chain uses the same order as the list returned
by clutter_actor_get_children(), which corresponds to the z-order.
This doesn't work well in the window picker, where clones follow
the stacking of windows to ensure a correct overview transition,
but previews are laid out purely based on space efficiency. As
a result, the order in which window previews are navigated when
tabbing around is essentially random. Fix this by providing a
focus chain implementation that is based on the visual layout
of the previews rather than the stacking.

https://bugzilla.gnome.org/show_bug.cgi?id=786546
This commit is contained in:
Florian Müllner 2017-08-20 11:19:39 +02:00
parent 156032a7ec
commit 8143f734f8
1 changed files with 18 additions and 1 deletions
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19
js/ui/workspace.js
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@ -132,6 +132,7 @@ var WindowClone = new Lang.Class({
this.actor._delegate = this;
this.slotId = 0;
this._slot = [0, 0, 0, 0];
this._dragSlot = [0, 0, 0, 0];
this._stackAbove = null;
@ -1068,6 +1069,22 @@ function rectEqual(one, two) {
one.height == two.height);
}
const WorkspaceActor = new Lang.Class({
Name: 'WorkspaceActor',
Extends: St.Widget,
vfunc_get_focus_chain: function() {
return this.get_children().filter(c => c.visible).sort((a,b) => {
let cloneA = (a._delegate && a._delegate instanceof WindowClone) ? a._delegate: null;
let cloneB = (b._delegate && b._delegate instanceof WindowClone) ? b._delegate: null;
if (cloneA && cloneB)
return cloneA.slotId - cloneB.slotId;
return 0;
});
}
});
/**
* @metaWorkspace: a #Meta.Workspace, or null
*/
@ -1100,7 +1117,7 @@ var Workspace = new Lang.Class({
// Without this the drop area will be overlapped.
this._windowOverlaysGroup.set_size(0, 0);
this.actor = new St.Widget({ style_class: 'window-picker' });
this.actor = new WorkspaceActor({ style_class: 'window-picker' });
if (monitorIndex != Main.layoutManager.primaryIndex)
this.actor.add_style_class_name('external-monitor');
this.actor.set_size(0, 0);