window_state_observer.h revision 4e180b6a0b4720a9b8e9e959a882386f690f08ff 
1// Copyright 2013 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 ASH_WM_WINDOW_STATE_OBSERVER_H_
6#define ASH_WM_WINDOW_STATE_OBSERVER_H_
7
8#include "ash/wm/wm_types.h"
9
10namespace ash {
11namespace wm {
12class WindowState;
13
14class ASH_EXPORT WindowStateObserver {
15 public:
16  // Called when the tracked_by_workspace has changed.
17  virtual void OnTrackedByWorkspaceChanged(
18      WindowState* window,
19      bool old_value) {}
20
21  // Called when the window's show type has changed. This is different from
22  // kWindowShowStatekey property change as this will be invoked when the window
23  // gets left/right maximized, and auto positioned. |old_type| is the value
24  // before the change.
25  virtual void OnWindowShowTypeChanged(WindowState* window_state,
26                                       WindowShowType old_type) {}
27};
28
29}  // namespace wm
30}  // namespace ash
31
32#endif  // ASH_WM_WINDOW_STATE_OBSERVER_H_
33