1 // Copyright (c) 2013 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 CHROME_BROWSER_CHROMEOS_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_ 6 #define CHROME_BROWSER_CHROMEOS_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_ 7 8 #include "ash/display/display_controller.h" 9 #include "base/basictypes.h" 10 #include "base/compiler_specific.h" 11 12 namespace chromeos { 13 14 // DisplayConfigurationObserver observes and saves 15 // the change of display configurations. 16 class DisplayConfigurationObserver : public ash::DisplayController::Observer { 17 public: 18 DisplayConfigurationObserver(); 19 virtual ~DisplayConfigurationObserver(); 20 21 protected: 22 // ash::DisplayController::Observer overrides: 23 virtual void OnDisplaysInitialized() OVERRIDE; 24 virtual void OnDisplayConfigurationChanged() OVERRIDE; 25 26 DISALLOW_COPY_AND_ASSIGN(DisplayConfigurationObserver); 27 }; 28 29 } // namespace chromeos 30 31 #endif // CHROME_BROWSER_CHROMEOS_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_ 32