If multiple menu applets have the same toggle overlay key binding, prioritize the menu on the monitor with the mouse cursor.

Author: samw-26

files/usr/share/cinnamon/applets/[email protected]/applet.js

@@ -1322,15 +1322,41 @@ class CinnamonMenuApplet extends Applet.TextIconApplet {
 
     _updateKeybinding() {
         Main.keybindingManager.addHotKey("overlay-key-" + this.instance_id, this.overlayKey, Lang.bind(this, function() {
-            if (!Main.overview.visible && !Main.expo.visible) {
-                if (this.forceShowPanel && !this.isOpen) {
-                    this.panel.peekPanel();
-                }
-                this.menu.toggle_with_options(this.enableAnimation);
+            const instancesWithSameBinding = this._getInstancesWithSameOverlayBinding();
+            if (!instancesWithSameBinding.length || this._mouseOnSameMonitor(this.actor)) {
+                this.toggleOverlay();
+                return;
             }
+            const matchingInstance = instancesWithSameBinding.find(instance => this._mouseOnSameMonitor(instance.actor));
+            (matchingInstance ?? this).toggleOverlay();
         }));
     }
 
+    _getInstancesWithSameOverlayBinding() {
+        const instances = Main.AppletManager.getRunningInstancesForUuid("[email protected]");
+        const binds = this.overlayKey.split('::');
+        return instances.filter(instance => {
+            if (instance === this) return false;
+            const instance_binds = instance.overlayKey.split('::');
+            return instance_binds.some(bind => bind && binds.includes(bind));
+        });
+    }
+
+    _mouseOnSameMonitor(actor) {
+        const mouseMonitor = Main.layoutManager.currentMonitor.index;
+        const actorMonitor = Main.layoutManager.findMonitorIndexForActor(actor);
+        return mouseMonitor === actorMonitor;
+    }
+
+    toggleOverlay() {
+        if (!Main.overview.visible && !Main.expo.visible) {
+            if (this.forceShowPanel && !this.isOpen) {
+                this.panel.peekPanel();
+            }
+            this.menu.toggle_with_options(this.enableAnimation);
+        }
+    }
+
     _updateCategoryHover() {
         this.categoriesBox.get_children().forEach(child => {
             if (child._delegate.actor_motion_id > 0) {