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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 RootWindow;
     12 class Window;
     13 }
     14 
     15 namespace ui {
     16 class Layer;
     17 }
     18 
     19 namespace views {
     20 class Widget;
     21 }
     22 
     23 namespace ash {
     24 
     25 class CleanupWidgetAfterAnimationObserver;
     26 
     27 // ScopedWindowCopy copies a window and will clean up the copied layers after
     28 // the class goes out of scope and the last animation has finished.
     29 class ScopedWindowCopy {
     30  public:
     31   ScopedWindowCopy(aura::Window* target_root, aura::Window* src_window);
     32   ~ScopedWindowCopy();
     33 
     34   aura::Window* GetWindow();
     35 
     36  private:
     37   // A weak pointer to a copy of the source window owned by cleanup_observer_.
     38   views::Widget* widget_;
     39 
     40   // A weak pointer to the deep copy of the source window's layers owned by
     41   // cleanup_observer_.
     42   ui::Layer* layer_;
     43 
     44   // A weak pointer to an animation observer which owns itself. When the
     45   // ScopedWindowCopy is destroyed The animation observer will clean up the
     46   // widget, layer and itself once any pending animations have completed.
     47   CleanupWidgetAfterAnimationObserver* cleanup_observer_;
     48 
     49   DISALLOW_COPY_AND_ASSIGN(ScopedWindowCopy);
     50 };
     51 
     52 }  // namespace ash
     53 
     54 #endif  // ASH_WM_OVERVIEW_SCOPED_WINDOW_COPY_H_
     55