Converted Observatory nav-notify element

runtime/observatory/lib/src/mocks/repositories/notification.dart

+// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file
+
+part of mocks;
+
+class NotificationChangeEventMock implements M.NotificationChangeEvent {
+  final NotificationRepositoryMock repository;
+  const NotificationChangeEventMock({this.repository});
+}
+
+typedef void NotificationRepositoryMockCallback(M.Notification notification);
+
+class NotificationRepositoryMock implements M.NotificationRepository {
+  final StreamController<M.NotificationChangeEvent> _onChange =
+      new StreamController<M.NotificationChangeEvent>.broadcast();
+  Stream<M.NotificationChangeEvent> get onChange => _onChange.stream;
+
+  bool get hasListeners => _onChange.hasListener;
+
+  final Iterable<M.Notification> _list;
+  final NotificationRepositoryMockCallback _add;
+  final NotificationRepositoryMockCallback _delete;
+
+  bool addInvoked = false;
+  bool listInvoked = false;
+  bool deleteInvoked = false;
+  bool deleteAllInvoked = false;
+
+
+  void add(M.Notification notification) {
+    addInvoked = true;
+    if (_add != null) _add(notification);
+  }
+
+  Iterable<M.Notification> list() {
+    listInvoked = true;
+    return _list;
+  }
+
+  void delete(M.Notification notification) {
+    deleteInvoked = true;
+    if (_add != null) _delete(notification);
+  }
+
+  void deleteAll() { deleteAllInvoked = true; }
+
+  void triggerChangeEvent() {
+    _onChange.add(new NotificationChangeEventMock(repository: this));
+  }
+
+  NotificationRepositoryMock({Iterable<M.Notification> list : const [],
+      NotificationRepositoryMockCallback add,
+      NotificationRepositoryMockCallback delete})
+    : _list = list,
+      _add = add,
+      _delete = delete;
+}