[gnome-shell/gbsneto/icon-grid-dnd: 13/18] appIcon: End running drag operations on destroy

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 7f12bd8c30cfeb0d8d04b282cada6d1c3e5f0cb8
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Jun 29 01:32:40 2019 -0300

    appIcon: End running drag operations on destroy
    
    AppIcon makes itself draggable, and handles the various DnD
    routines such as 'drag-begin' and 'drag-end' by making the
    Overview emit the appropriate signals.
    
    However, when destroyed, the AppIcon does not try to finish
    any drag operations that started. That causes the event
    blocker in AllView not to be updated correctly when dragging
    icons to outside folders.
    
    Make AppIcon emit 'item-drag-end' when a drag operation
    started and it's destroyed.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/603

 js/ui/appDisplay.js | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index fd29338c0..9ad105f51 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -1665,13 +1665,16 @@ var AppIcon = class AppIcon {
         if (isDraggable) {
             this._draggable = DND.makeDraggable(this.actor);
             this._draggable.connect('drag-begin', () => {
+                this._dragging = true;
                 this._removeMenuTimeout();
                 Main.overview.beginItemDrag(this);
             });
             this._draggable.connect('drag-cancelled', () => {
+                this._dragging = false;
                 Main.overview.cancelledItemDrag(this);
             });
             this._draggable.connect('drag-end', () => {
+                this._dragging = false;
                Main.overview.endItemDrag(this);
             });
         }
@@ -1688,6 +1691,10 @@ var AppIcon = class AppIcon {
     _onDestroy() {
         if (this._stateChangedId > 0)
             this.app.disconnect(this._stateChangedId);
+        if (this._draggable && this._dragging) {
+            Main.overview.endItemDrag(this);
+            this.draggable = null;
+        }
         this._stateChangedId = 0;
         this._removeMenuTimeout();
     }