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// Copyright (c) 2012 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_FOCUS_MANAGER_H_
#define UI_AURA_FOCUS_MANAGER_H_
#include "base/basictypes.h"
#include "base/observer_list.h"
#include "ui/aura/aura_export.h"
namespace ui {
class Event;
}
namespace aura {
class FocusChangeObserver;
class Window;
// An interface implemented by the Desktop to expose the focused window and
// allow for it to be changed.
class AURA_EXPORT FocusManager {
public:
FocusManager();
~FocusManager();
void AddObserver(FocusChangeObserver* observer);
void RemoveObserver(FocusChangeObserver* observer);
// Sets the currently focused window. Before the currently focused window is
// changed, the previous focused window's delegate is sent a blur
// notification, and after it is changed the new focused window is sent a
// focused notification. Nothing happens if |window| and GetFocusedWindow()
// match.
void SetFocusedWindow(Window* window, const ui::Event* event);
// Returns the currently focused window or NULL if there is none.
Window* GetFocusedWindow();
// Returns true if |window| is the focused window.
bool IsFocusedWindow(const Window* window) const;
protected:
aura::Window* focused_window_;
ObserverList<FocusChangeObserver> observers_;
DISALLOW_COPY_AND_ASSIGN(FocusManager);
};
} // namespace aura
#endif // UI_AURA_FOCUS_MANAGER_H_
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