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/stacking_client.h"
  13
  14 namespace aura{
  15 class RootWindow;
  16 }
  17
  18 namespace ash {
  19
  20 namespace internal {
  21 class AlwaysOnTopController;
  22 }
  23
  24 class ASH_EXPORT StackingController : public aura::client::StackingClient {
  25  public:
  26   StackingController();
  27   virtual ~StackingController();
  28
  29   // Overridden from aura::client::StackingClient:
  30   virtual aura::Window* GetDefaultParent(aura::Window* context,
  31                                          aura::Window* window,
  32                                          const gfx::Rect& bounds) OVERRIDE;
  33
  34  private:
  35   // Returns corresponding system modal container for a modal window.
  36   // If screen lock is not active, all system modal windows are placed into the
  37   // normal modal container.
  38   // Otherwise those that originate from LockScreen container and above are
  39   // placed in the screen lock modal container.
  40   aura::Window* GetSystemModalContainer(aura::RootWindow* root,
  41                                         aura::Window* window) const;
  42
  43   // Returns the AlwaysOnTopController of the |root_window|.
  44   internal::AlwaysOnTopController* GetAlwaysOnTopController(
  45       aura::RootWindow* root_window);
  46
  47   DISALLOW_COPY_AND_ASSIGN(StackingController);
  48 };
  49
  50 }  // namespace ash
  51
  52 #endif  // ASH_WM_STACKING_CONTROLLER_H_