messageTray: Add `notification-removed` signal to `Source`

This allows us to drop the `destroy` signal handler for each
notification in MessageTray.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3173>

diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index 0d03e254139a462cb2459baf05a4f56921365914..a861219a4b2038cf48411d35a72ae7331b4a5d86 100644 (file)
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -633,6 +633,7 @@ export const Source = GObject.registerClass({
     Signals: {
         'destroy': {param_types: [GObject.TYPE_UINT]},
         'notification-added': {param_types: [Notification.$gtype]},
+        'notification-removed': {param_types: [Notification.$gtype]},
         'notification-show': {param_types: [Notification.$gtype]},
     },
 }, class Source extends MessageList.Source {
@@ -687,6 +688,7 @@ export const Source = GObject.registerClass({
             return;
 
         this.notifications.splice(index, 1);
+        this.emit('notification-removed', notification);
         this.countUpdated();
 
         if (this.notifications.length === 0)