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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_WM_PUBLIC_TRANSIENT_WINDOW_CLIENT_H_
#define UI_WM_PUBLIC_TRANSIENT_WINDOW_CLIENT_H_
#include "base/basictypes.h"
#include "ui/wm/wm_export.h"
namespace aura {
class Window;
namespace client {
// 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.
// TODO(sky): nuke this class and replace with calls to TransientWindowManager.
// This is temporary until we start moving to ui/wm.
class WM_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;
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|.
WM_EXPORT void SetTransientWindowClient(TransientWindowClient* client);
WM_EXPORT TransientWindowClient* GetTransientWindowClient();
} // namespace client
} // namespace aura
#endif // UI_WM_PUBLIC_TRANSIENT_WINDOW_CLIENT_H_
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