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      1 // Copyright 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 ASH_WM_OVERVIEW_SCOPED_WINDOW_COPY_H_
      6 #define ASH_WM_OVERVIEW_SCOPED_WINDOW_COPY_H_
      7 
      8 #include "base/basictypes.h"
      9 
     10 namespace aura {
     11 class Window;
     12 }
     13 
     14 namespace views {
     15 class Widget;
     16 }
     17 
     18 namespace ash {
     19 
     20 class CleanupWidgetAfterAnimationObserver;
     21 
     22 // ScopedWindowCopy copies a window and will clean up the copied layers after
     23 // the class goes out of scope and the last animation has finished.
     24 class ScopedWindowCopy {
     25  public:
     26   ScopedWindowCopy(aura::Window* target_root, aura::Window* src_window);
     27   ~ScopedWindowCopy();
     28 
     29   aura::Window* GetWindow();
     30 
     31  private:
     32   // A weak pointer to a copy of the source window owned by cleanup_observer_.
     33   views::Widget* widget_;
     34 
     35   // A weak pointer to an animation observer which owns itself. When the
     36   // ScopedWindowCopy is destroyed The animation observer will clean up the
     37   // widget, layer and itself once any pending animations have completed.
     38   CleanupWidgetAfterAnimationObserver* cleanup_observer_;
     39 
     40   DISALLOW_COPY_AND_ASSIGN(ScopedWindowCopy);
     41 };
     42 
     43 }  // namespace ash
     44 
     45 #endif  // ASH_WM_OVERVIEW_SCOPED_WINDOW_COPY_H_
     46