chrome/browser/chromeos/display/display_configuration_observer.h

   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/window_tree_host_manager.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
  17     : public ash::WindowTreeHostManager::Observer {
  18  public:
  19   DisplayConfigurationObserver();
  20   ~DisplayConfigurationObserver() override;
  21
  22  protected:
  23   // ash::WindowTreeHostManager::Observer overrides:
  24   void OnDisplaysInitialized() override;
  25   void OnDisplayConfigurationChanged() override;
  26
  27   DISALLOW_COPY_AND_ASSIGN(DisplayConfigurationObserver);
  28 };
  29
  30 }  // namespace chromeos
  31
  32 #endif  // CHROME_BROWSER_CHROMEOS_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_