refactor dialogs

app/lib/features/geckoview/features/pwa/presentation/dialogs/pwa_install_dialog.dart

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2024-2026 Fabian Freund.
+ *
+ * This file is part of WebLibre
+ * (see https://weblibre.eu).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+import 'package:flutter/material.dart';
+
+/// Shows a dialog asking the user to confirm adding a PWA to the home screen.
+///
+/// Returns true if the user confirms, false if cancelled.
+Future<bool?> showPwaInstallConfirmDialog(BuildContext context, String name) {
+  return showDialog<bool>(
+    context: context,
+    builder: (context) => AlertDialog(
+      title: const Text('Add to Home Screen'),
+      content: Text('Add "$name" to your home screen?'),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.of(context).pop(false),
+          child: const Text('Cancel'),
+        ),
+        FilledButton(
+          onPressed: () => Navigator.of(context).pop(true),
+          child: const Text('Add'),
+        ),
+      ],
+    ),
+  );
+}

app/lib/features/geckoview/features/pwa/presentation/widgets/pwa_install_button.dart

@@ -22,29 +22,14 @@ import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:weblibre/core/logger.dart';
 import 'package:weblibre/features/geckoview/features/pwa/domain/providers.dart';
+import 'package:weblibre/features/geckoview/features/pwa/presentation/dialogs/pwa_install_dialog.dart';
 import 'package:weblibre/utils/ui_helper.dart';
 
 Future<void> showPwaInstallDialog(BuildContext context, WidgetRef ref) async {
   final manifest = ref.read(currentTabManifestProvider);
   final name = manifest?.name ?? manifest?.shortName ?? 'this web app';
 
-  final confirmed = await showDialog<bool>(
-    context: context,
-    builder: (context) => AlertDialog(
-      title: const Text('Add to Home Screen'),
-      content: Text('Add "$name" to your home screen?'),
-      actions: [
-        TextButton(
-          onPressed: () => Navigator.of(context).pop(false),
-          child: const Text('Cancel'),
-        ),
-        FilledButton(
-          onPressed: () => Navigator.of(context).pop(true),
-          child: const Text('Add'),
-        ),
-      ],
-    ),
-  );
+  final confirmed = await showPwaInstallConfirmDialog(context, name);
 
   if (confirmed == true) {
     try {