stacking_controller.h revision 1e9bf3e0803691d0a228da41fc608347b6db4340 
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 ASH_WM_STACKING_CONTROLLER_H_
6#define ASH_WM_STACKING_CONTROLLER_H_
7
8#include "ash/ash_export.h"
9#include "base/basictypes.h"
10#include "base/compiler_specific.h"
11#include "base/memory/scoped_ptr.h"
12#include "ui/aura/client/window_tree_client.h"
13
14namespace ash {
15namespace internal {
16class AlwaysOnTopController;
17}
18
19class ASH_EXPORT StackingController : public aura::client::WindowTreeClient {
20 public:
21  StackingController();
22  virtual ~StackingController();
23
24  // Overridden from aura::client::WindowTreeClient:
25  virtual aura::Window* GetDefaultParent(aura::Window* context,
26                                         aura::Window* window,
27                                         const gfx::Rect& bounds) OVERRIDE;
28
29 private:
30  // Returns corresponding system modal container for a modal window.
31  // If screen lock is not active, all system modal windows are placed into the
32  // normal modal container.
33  // Otherwise those that originate from LockScreen container and above are
34  // placed in the screen lock modal container.
35  aura::Window* GetSystemModalContainer(aura::Window* root,
36                                        aura::Window* window) const;
37
38  DISALLOW_COPY_AND_ASSIGN(StackingController);
39};
40
41}  // namespace ash
42
43#endif  // ASH_WM_STACKING_CONTROLLER_H_
44