15f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Copyright 2014 The Chromium Authors. All rights reserved. 25f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// found in the LICENSE file. 45f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 55f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#ifndef UI_GFX_DISPLAY_CHANGE_NOTIFIER_H_ 65f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#define UI_GFX_DISPLAY_CHANGE_NOTIFIER_H_ 75f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 85f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#include <vector> 95f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 105f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#include "base/observer_list.h" 115f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#include "ui/gfx/gfx_export.h" 125f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 135f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)namespace gfx { 145f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 155f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)class Display; 165f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)class DisplayObserver; 175f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 185f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// DisplayChangeNotifier is a class implementing the handling of DisplayObserver 195f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// notification for Screen. 205f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)class GFX_EXPORT DisplayChangeNotifier { 215f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) public: 225f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) DisplayChangeNotifier(); 235f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) ~DisplayChangeNotifier(); 245f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 255f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) void AddObserver(DisplayObserver* observer); 265f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 275f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) void RemoveObserver(DisplayObserver* observer); 285f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 295f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) void NotifyDisplaysChanged(const std::vector<Display>& old_displays, 305f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) const std::vector<Display>& new_displays); 315f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 325f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) private: 335f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) // The observers that need to be notified when a display is modified, added 345f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) // or removed. 355f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) ObserverList<DisplayObserver> observer_list_; 365f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 375f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(DisplayChangeNotifier); 385f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)}; 395f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 405f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)} // namespace gfx 415f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 425f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#endif // UI_GFX_DISPLAY_CHANGE_NOTIFIER_H_ 435f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 44