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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_SHELL_ALWAYS_ON_TOP_CONTROLLER_H_
#define UI_AURA_SHELL_ALWAYS_ON_TOP_CONTROLLER_H_
#pragma once
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "ui/aura/window_observer.h"
namespace aura {
class Window;
}
namespace aura_shell {
namespace internal {
// AlwaysOnTopController puts window into proper containers based on its
// 'AlwaysOnTop' property. That is, putting a window to |default_container_|
// if its "AlwaysOnTop" property is false. Otherwise, put it in
// |always_on_top_container_|.
class AlwaysOnTopController : public aura::WindowObserver {
public:
AlwaysOnTopController();
virtual ~AlwaysOnTopController();
// Sets the two top level window containers.
void SetContainers(aura::Window* default_container,
aura::Window* always_on_top_container);
// Gets container for given |window| based on its "AlwaysOnTop" property.
aura::Window* GetContainer(aura::Window* window) const;
private:
// Overridden from aura::WindowObserver:
virtual void OnWindowAdded(aura::Window* child) OVERRIDE;
virtual void OnWillRemoveWindow(aura::Window* child) OVERRIDE;
virtual void OnWindowPropertyChanged(aura::Window* window,
const char* name,
void* old) OVERRIDE;
virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
aura::Window* default_container_;
aura::Window* always_on_top_container_;
DISALLOW_COPY_AND_ASSIGN(AlwaysOnTopController);
};
} // namepsace aura_shell
} // namepsace internal
#endif // UI_AURA_SHELL_ALWAYS_ON_TOP_CONTROLLER_H_
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