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 class AlwaysOnTopController;
  16
  17 class ASH_EXPORT StackingController : public aura::client::WindowTreeClient {
  18  public:
  19   StackingController();
  20   ~StackingController() override;
  21
  22   // Overridden from aura::client::WindowTreeClient:
  23   aura::Window* GetDefaultParent(aura::Window* context,
  24                                  aura::Window* window,
  25                                  const gfx::Rect& bounds) override;
  26
  27  private:
  28   // Returns corresponding system modal container for a modal window.
  29   // If screen lock is not active, all system modal windows are placed into the
  30   // normal modal container.
  31   // Otherwise those that originate from LockScreen container and above are
  32   // placed in the screen lock modal container.
  33   aura::Window* GetSystemModalContainer(aura::Window* root,
  34                                         aura::Window* window) const;
  35
  36   DISALLOW_COPY_AND_ASSIGN(StackingController);
  37 };
  38
  39 }  // namespace ash
  40
  41 #endif  // ASH_WM_STACKING_CONTROLLER_H_