// 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_ #pragma once #include "base/basictypes.h" #include "base/observer_list.h" #include "ui/aura/aura_export.h" namespace aura { class Event; 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 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_