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- // Copyright 2014 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_TRANSIENT_WINDOW_CLIENT_H_
- #define UI_AURA_CLIENT_TRANSIENT_WINDOW_CLIENT_H_
- #include <vector>
- #include "ui/aura/aura_export.h"
- namespace aura {
- class Window;
- namespace client {
- class TransientWindowClientObserver;
- // TransientWindowClient is used to add or remove transient windows. Transient
- // children get the following behavior:
- // . The transient parent destroys any transient children when it is
- // destroyed. This means a transient child is destroyed if either its parent
- // or transient parent is destroyed.
- // . If a transient child and its transient parent share the same parent, then
- // transient children are always ordered above the transient parent.
- // Transient windows are typically used for popups and menus.
- class AURA_EXPORT TransientWindowClient {
- public:
- virtual void AddTransientChild(Window* parent, Window* child) = 0;
- virtual void RemoveTransientChild(Window* parent, Window* child) = 0;
- virtual Window* GetTransientParent(Window* window) = 0;
- virtual const Window* GetTransientParent(const Window* window) = 0;
- virtual std::vector<Window*> GetTransientChildren(const Window* parent) = 0;
- virtual void AddObserver(TransientWindowClientObserver* observer) = 0;
- virtual void RemoveObserver(TransientWindowClientObserver* observer) = 0;
- protected:
- virtual ~TransientWindowClient() {}
- };
- // Sets/gets the TransientWindowClient. This does *not* take ownership of
- // |client|. It is assumed the caller will invoke SetTransientWindowClient(NULL)
- // before deleting |client|.
- AURA_EXPORT void SetTransientWindowClient(TransientWindowClient* client);
- AURA_EXPORT TransientWindowClient* GetTransientWindowClient();
- } // namespace client
- } // namespace aura
- #endif // UI_AURA_CLIENT_TRANSIENT_WINDOW_CLIENT_H_
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