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- // Copyright (c) 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 UI_AURA_CLIENT_WINDOW_STACKING_CLIENT_H_
- #define UI_AURA_CLIENT_WINDOW_STACKING_CLIENT_H_
- #include "ui/aura/aura_export.h"
- #include "ui/aura/window.h"
- namespace aura {
- namespace client {
- class AURA_EXPORT WindowStackingClient {
- public:
- // Invoked from the various Window stacking functions. Allows the
- // WindowStackingClient to alter the source, target and/or direction to stack.
- // Returns true if stacking should continue; false if the stacking should not
- // happen.
- virtual bool AdjustStacking(Window** child,
- Window** target,
- Window::StackDirection* direction) = 0;
- protected:
- virtual ~WindowStackingClient() {}
- };
- // Sets/gets the WindowStackingClient. This does *not* take ownership of
- // |client|. It is assumed the caller will invoke SetWindowStackingClient(NULL)
- // before deleting |client|.
- AURA_EXPORT void SetWindowStackingClient(WindowStackingClient* client);
- AURA_EXPORT WindowStackingClient* GetWindowStackingClient();
- } // namespace client
- } // namespace aura
- #endif // UI_AURA_CLIENT_WINDOW_STACKING_CLIENT_H_
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