1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_EXTENSIONS_WINDOW_CONTROLLER_LIST_OBSERVER_H_
6#define CHROME_BROWSER_EXTENSIONS_WINDOW_CONTROLLER_LIST_OBSERVER_H_
7
8namespace extensions {
9
10class WindowController;
11
12// Implementations must not change the contents of the WindowControllerList
13// inside any of these methods.
14class WindowControllerListObserver {
15  public:
16  // Called immediately after a window controller is added to the list
17  virtual void OnWindowControllerAdded(WindowController* window_controller) {}
18
19  // Called immediately after a window controller is removed from the list
20  virtual void OnWindowControllerRemoved(WindowController* window_controller) {}
21
22 protected:
23  virtual ~WindowControllerListObserver() {}
24};
25
26}  // namespace extensions
27
28#endif  // CHROME_BROWSER_EXTENSIONS_WINDOW_CONTROLLER_LIST_OBSERVER_H_
29