ui/wm/core/transient_window_stacking_client.h

   1 // Copyright (c) 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 UI_WM_CORE_TRANSIENT_WINDOW_STACKING_CLIENT_H_
   6 #define UI_WM_CORE_TRANSIENT_WINDOW_STACKING_CLIENT_H_
   7
   8 #include "ui/aura/client/window_stacking_client.h"
   9 #include "ui/wm/wm_export.h"
  10
  11 namespace wm {
  12
  13 class TransientWindowManager;
  14
  15 class WM_EXPORT TransientWindowStackingClient
  16     : public aura::client::WindowStackingClient {
  17  public:
  18   TransientWindowStackingClient();
  19   ~TransientWindowStackingClient() override;
  20
  21   // WindowStackingClient:
  22   bool AdjustStacking(aura::Window** child,
  23                       aura::Window** target,
  24                       aura::Window::StackDirection* direction) override;
  25
  26  private:
  27   // Purely for DCHECKs.
  28   friend class TransientWindowManager;
  29
  30   static TransientWindowStackingClient* instance_;
  31
  32   DISALLOW_COPY_AND_ASSIGN(TransientWindowStackingClient);
  33 };
  34
  35 }  // namespace wm
  36
  37 #endif  // UI_WM_CORE_TRANSIENT_WINDOW_STACKING_CLIENT_H_