ash/wm/stacking_controller.h

   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
  14 namespace ash {
  15 namespace internal {
  16 class AlwaysOnTopController;
  17 }
  18
  19 class 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_