[polari] Replace custom in-app notifications with Adw.Toast

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

commit 83660634d2e8d0ffa7a6e1ec53a47bdf6ebb0b9b
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Feb 16 17:35:15 2022 +0100

    Replace custom in-app notifications with Adw.Toast
    
    We finally have a standard widget for in-app notifications, so use
    those instead of our own (much less polished) implementation.
    
    Part-of: <https://gitlab.gnome.org/GNOME/polari/-/merge_requests/250>

 data/resources/main-window.ui |  2 +-
 src/application.js            | 23 ++++++++++++-----------
 src/mainWindow.js             | 11 +++--------
 src/utils.js                  |  9 +++++----
 4 files changed, 21 insertions(+), 24 deletions(-)
---
diff --git a/data/resources/main-window.ui b/data/resources/main-window.ui
index b64891a3..355f8d17 100644
--- a/data/resources/main-window.ui
+++ b/data/resources/main-window.ui
@@ -227,7 +227,7 @@
           </object>
         </child>
         <child>
-          <object class="GtkOverlay" id="overlay">
+          <object class="AdwToastOverlay" id="overlay">
             <property name="vexpand">True</property>
             <child>
               <object class="Gjs_RoomStack" id="roomStack">
diff --git a/src/application.js b/src/application.js
index db2ee31a..6d348afe 100644
--- a/src/application.js
+++ b/src/application.js
@@ -498,10 +498,10 @@ class Application extends Adw.Application {
             [,, server, port, room] = uri.match(IRC_SCHEMA_REGEX);
             success = true;
         } catch (e) {
-            let label = _('Failed to open link');
-            let n = new AppNotifications.MessageNotification(
-                label, 'dialog-error-symbolic');
-            this.active_window?.queueNotification(n);
+            const toast = new Adw.Toast({
+                title: _('Failed to open link'),
+            });
+            this.active_window?.addToast(toast);
         }
 
         return [success, server, port, room];
@@ -769,11 +769,13 @@ class Application extends Adw.Application {
         this._removedAccounts.add(account);
         account.visible = false;
 
-        const label = vprintf(_('%s removed.'), account.display_name);
-        const n = new AppNotifications.UndoNotification(label);
-        this?.active_window.queueNotification(n);
-
-        n.connect('closed', async () => {
+        const toast = new Adw.Toast({
+            title: vprintf(_('%s removed.'), account.display_name),
+            button_label: _('Undo'),
+            action_name: 'app.undo-remove-connection',
+            action_target: parameter,
+        });
+        toast.connect('dismissed', async () => {
             if (!this._removedAccounts.delete(account))
                 return;
 
@@ -782,8 +784,7 @@ class Application extends Adw.Application {
             Utils.clearAccountPassword(account);
             Utils.clearIdentifyPassword(account);
         });
-        n.connect('undo',
-            () => this.activate_action('undo-remove-connection', parameter));
+        this?.active_window.addToast(toast);
     }
 
     async _onUndoRemoveConnection(action, parameter) {
diff --git a/src/mainWindow.js b/src/mainWindow.js
index c7582eac..fa3bf59a 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -6,7 +6,6 @@ import Polari from 'gi://Polari';
 import Tp from 'gi://TelepathyGLib';
 
 import AccountsMonitor from './accountsMonitor.js';
-import * as AppNotifications from './appNotifications.js';
 import JoinDialog from './joinDialog.js';
 import RoomList_ from './roomList.js'; // used in template
 import RoomManager from './roomManager.js';
@@ -133,10 +132,6 @@ class MainWindow extends Gtk.ApplicationWindow {
 
         this._userListPopover.set_parent(this._showUserListButton);
 
-        this._notificationQueue = new AppNotifications.NotificationQueue();
-
-        this._overlay.add_overlay(this._notificationQueue);
-
         const app = this.application;
         if (app.isTestInstance)
             this.add_css_class('test-instance');
@@ -217,10 +212,10 @@ class MainWindow extends Gtk.ApplicationWindow {
     }
 
     /**
-     * @param {AppNotification} n - a notification
+     * @param {Adw.Toast} toast - a toast (cheers!)
      */
-    queueNotification(n) {
-        this._notificationQueue.addNotification(n);
+    addToast(toast) {
+        this._overlay.add_toast(toast);
     }
 
     _onAccountsReachableChanged() {
diff --git a/src/utils.js b/src/utils.js
index ba691219..4745c3e0 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -20,14 +20,13 @@
  *
  */
 
+import Adw from 'gi://Adw';
 import Gdk from 'gi://Gdk';
 import Gio from 'gi://Gio';
 import GLib from 'gi://GLib';
 import Gtk from 'gi://Gtk';
 import Secret from 'gi://Secret';
 
-import { MessageNotification } from './appNotifications.js';
-
 import gi from 'gi';
 let Soup;
 
@@ -316,8 +315,10 @@ export function openURL(url) {
             try {
                 Gtk.show_uri_full_finish(app.active_window, res);
             } catch (e) {
-                let n = new MessageNotification(_('Failed to open link'));
-                app.active_window?.queueNotification(n);
+                const toast = new Adw.Toast({
+                    title: _('Failed to open link'),
+                });
+                app.active_window?.addToast(toast);
                 console.debug(`Failed to open ${url}: %o`, e);
             }
         });