Add Notification Portal v2

data/pantheon.portal

@@ -1,4 +1,4 @@
 [portal]
 DBusName=org.freedesktop.impl.portal.desktop.pantheon
-Interfaces=org.freedesktop.impl.portal.Access;org.freedesktop.impl.portal.AppChooser;org.freedesktop.impl.portal.Background;org.freedesktop.impl.portal.Screenshot;org.freedesktop.impl.portal.Wallpaper;org.freedesktop.impl.portal.ScreenCast
+Interfaces=org.freedesktop.impl.portal.Access;org.freedesktop.impl.portal.AppChooser;org.freedesktop.impl.portal.Background;org.freedesktop.impl.portal.Notification;org.freedesktop.impl.portal.Screenshot;org.freedesktop.impl.portal.Wallpaper;org.freedesktop.impl.portal.ScreenCast
 UseIn=pantheon

src/Notification/Portal.vala

@@ -0,0 +1,47 @@
+/*
+ * SPDX-FileCopyrightText: 2025 elementary, Inc. (https://elementary.io)
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+[DBus (name = "org.freedesktop.impl.portal.Notification")]
+public class Notification.Portal : Object {
+    [DBus (name = "io.elementary.notifications.PortalProxy")]
+    private interface PortalProxy : Object {
+        public abstract HashTable<string, Variant> supported_options { owned get; }
+        public abstract uint version { owned get; }
+
+        public signal void action_invoked (string app_id, string id, string action_name, Variant[] action_parameters);
+
+        public abstract void add_notification (string app_id, string id, HashTable<string, Variant> data) throws Error;
+        public abstract void remove_notification (string app_id, string id) throws Error;
+    }
+
+    public signal void action_invoked (string app_id, string id, string action_name, Variant[] parameters);
+
+    public HashTable<string, Variant> supported_options { owned get { return proxy.supported_options; } }
+
+    public uint version { get { return proxy.version; } }
+
+    private PortalProxy proxy;
+
+    construct {
+        try {
+            proxy = Bus.get_proxy_sync<PortalProxy> (
+                SESSION, "io.elementary.notifications.PortalProxy", "/io/elementary/notifications/PortalProxy"
+            );
+            proxy.action_invoked.connect (
+                (app_id, id, action, parameters) => action_invoked (app_id, id, action, parameters)
+            );
+        } catch (Error e) {
+            critical ("Couldn't connect to notifications portal proxy: %s", e.message);
+        }
+    }
+
+    public void add_notification (string app_id, string id, HashTable<string, Variant> data) throws Error {
+        proxy.add_notification (app_id, id, data);
+    }
+
+    public void remove_notification (string app_id, string id) throws Error {
+        proxy.remove_notification (app_id, id);
+    }
+}

src/XdgDesktopPortalPantheon.vala

@@ -41,6 +41,9 @@ private void on_bus_acquired (DBusConnection connection, string name) {
         connection.register_object ("/org/freedesktop/portal/desktop", new Background.Portal (connection));
         debug ("Background Portal registered!");
 
+        connection.register_object ("/org/freedesktop/portal/desktop", new Notification.Portal ());
+        debug ("Notification Portal registered!");
+
         connection.register_object ("/org/freedesktop/portal/desktop", new Screenshot.Portal (connection));
         debug ("Screenshot Portal registered!");
 

src/meson.build

@@ -8,6 +8,7 @@ executable(
     'AppChooser/Portal.vala',
     'Background/NotificationRequest.vala',
     'Background/Portal.vala',
+    'Notification/Portal.vala',
     'ScreenCast/MonitorTracker/Interface.vala',
     'ScreenCast/MonitorTracker/Monitor.vala',
     'ScreenCast/MonitorTracker/MonitorTracker.vala',