[gnome-shell] windowManager: Limit super-scroll handling to normal mode

[Marge Bot <marge-bot src gnome org>]

commit fb1ab4f20b6566d7715a1327b326def601b36aa3
Author: Florian Müllner <fmuellner gnome org>
Date:   Mon Mar 8 19:59:23 2021 +0100

    windowManager: Limit super-scroll handling to normal mode
    
    The overview has it's own workspace scroll handling, and we don't want
    to switch workspaces in other modes. Limiting the scroll-event handler
    to NORMAL mode matches the swipe tracker used by WorkspaceAnimation,
    and allows for other uses of scroll events (like scrolling in the
    alt-tab popup).
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3840
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1746>

 js/ui/windowManager.js | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/js/ui/windowManager.js b/js/ui/windowManager.js
index 93777db22e..34c54b61e1 100644
--- a/js/ui/windowManager.js
+++ b/js/ui/windowManager.js
@@ -864,6 +864,10 @@ var WindowManager = class {
                            this._switchToApplication.bind(this));
 
         global.stage.connect('scroll-event', (stage, event) => {
+            const allowedModes = Shell.ActionMode.NORMAL;
+            if ((allowedModes & Main.actionMode) === 0)
+                return Clutter.EVENT_PROPAGATE;
+
             if (this._workspaceAnimation.canHandleScrollEvent(event))
                 return Clutter.EVENT_PROPAGATE;