1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef ASH_WM_ALWAYS_ON_TOP_CONTROLLER_H_ 6#define ASH_WM_ALWAYS_ON_TOP_CONTROLLER_H_ 7 8#include "base/basictypes.h" 9#include "base/compiler_specific.h" 10#include "ui/aura/window_observer.h" 11 12namespace aura { 13class Window; 14} 15 16namespace ash { 17 18// AlwaysOnTopController puts window into proper containers based on its 19// 'AlwaysOnTop' property. That is, putting a window into the worskpace 20// container if its "AlwaysOnTop" property is false. Otherwise, put it in 21// |always_on_top_container_|. 22class AlwaysOnTopController : public aura::WindowObserver { 23 public: 24 AlwaysOnTopController(); 25 virtual ~AlwaysOnTopController(); 26 27 // Sets the container for always on top windows. 28 void SetAlwaysOnTopContainer(aura::Window* always_on_top_container); 29 30 // Gets container for given |window| based on its "AlwaysOnTop" property. 31 aura::Window* GetContainer(aura::Window* window) const; 32 33 private: 34 // Overridden from aura::WindowObserver: 35 virtual void OnWindowAdded(aura::Window* child) OVERRIDE; 36 virtual void OnWillRemoveWindow(aura::Window* child) OVERRIDE; 37 virtual void OnWindowPropertyChanged(aura::Window* window, 38 const void* key, 39 intptr_t old) OVERRIDE; 40 virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE; 41 42 aura::Window* always_on_top_container_; 43 44 DISALLOW_COPY_AND_ASSIGN(AlwaysOnTopController); 45}; 46 47} // namepsace ash 48 49#endif // ASH_WM_ALWAYS_ON_TOP_CONTROLLER_H_ 50