1 files changed, 54 insertions, 0 deletions
diff --git a/chromium/ash/wm/overview/scoped_window_copy.h b/chromium/ash/wm/overview/scoped_window_copy.h
new file mode 100644
index 00000000000..d5da4458e92
--- /dev/null
+++ b/chromium/ash/wm/overview/scoped_window_copy.h
@@ -0,0 +1,54 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ASH_WM_OVERVIEW_SCOPED_WINDOW_COPY_H_
+#define ASH_WM_OVERVIEW_SCOPED_WINDOW_COPY_H_
+
+#include "base/basictypes.h"
+
+namespace aura {
+class RootWindow;
+class Window;
+}
+
+namespace ui {
+class Layer;
+}
+
+namespace views {
+class Widget;
+}
+
+namespace ash {
+
+class CleanupWidgetAfterAnimationObserver;
+
+// ScopedWindowCopy copies a window and will clean up the copied layers after
+// the class goes out of scope and the last animation has finished.
+class ScopedWindowCopy {
+ public:
+  ScopedWindowCopy(aura::Window* target_root, aura::Window* src_window);
+  ~ScopedWindowCopy();
+
+  aura::Window* GetWindow();
+
+ private:
+  // A weak pointer to a copy of the source window owned by cleanup_observer_.
+  views::Widget* widget_;
+
+  // A weak pointer to the deep copy of the source window's layers owned by
+  // cleanup_observer_.
+  ui::Layer* layer_;
+
+  // A weak pointer to an animation observer which owns itself. When the
+  // ScopedWindowCopy is destroyed The animation observer will clean up the
+  // widget, layer and itself once any pending animations have completed.
+  CleanupWidgetAfterAnimationObserver* cleanup_observer_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedWindowCopy);
+};
+
+}  // namespace ash
+
+#endif  // ASH_WM_OVERVIEW_SCOPED_WINDOW_COPY_H_