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+// Copyright (c) 2011 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 UI_AURA_DESKTOP_DELEGATE_H_
+#define UI_AURA_DESKTOP_DELEGATE_H_
+#pragma once
+
+namespace aura {
+
+class Window;
+
+class DesktopDelegate {
+ public:
+ virtual ~DesktopDelegate() {}
+
+ // Called by the Window when its parent is set to NULL. The delegate is given
+ // an opportunity to inspect the window and add it to a default parent window
+ // of its choosing.
+ virtual void AddChildToDefaultParent(Window* window) = 0;
+
+ // Returns the window that should be activated other than |ignore|.
+ virtual Window* GetTopmostWindowToActivate(Window* ignore) const = 0;
+};
+
+} // namespace aura
+
+#endif // UI_AURA_DESKTOP_DELEGATE_H_