appDisplay: Consider drag events during page-switching as invalid

While there's an ongoing animation to switch pages, we should ignore all
drag events as those will end up moving the drag item to an unwanted
position.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2348>

diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 0d0b1e56aa01cc025a99edf09dd6c568986fe5ff..3c7d2f3d40c1402da27f950dfeee6de606d7613b 100644 (file)
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -798,6 +798,7 @@ var BaseAppView = GObject.registerClass({
 
         // Dragging over invalid parts of the grid cancels the timeout
         if (item === source ||
+            this._adjustment.get_transition('value') !== null ||
             page !== this._grid.currentPage ||
             dragLocation === IconGrid.DragLocation.INVALID ||
             dragLocation === IconGrid.DragLocation.ON_ICON) {