| // Copyright (c) 2013 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 ASH_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_ |
| #define ASH_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_ |
| |
| #include "ash/ash_export.h" |
| #include "ash/display/window_tree_host_manager.h" |
| #include "ash/wm/tablet_mode/tablet_mode_observer.h" |
| #include "base/compiler_specific.h" |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| |
| namespace ash { |
| |
| // DisplayConfigurationObserver observes and saves |
| // the change of display configurations. |
| class ASH_EXPORT DisplayConfigurationObserver |
| : public WindowTreeHostManager::Observer, |
| public TabletModeObserver { |
| public: |
| DisplayConfigurationObserver(); |
| ~DisplayConfigurationObserver() override; |
| |
| bool save_preference() const { return save_preference_; } |
| |
| protected: |
| // WindowTreeHostManager::Observer: |
| void OnDisplaysInitialized() override; |
| void OnDisplayConfigurationChanged() override; |
| |
| // TabletModeObserver: |
| void OnTabletModeStarted() override; |
| void OnTabletModeEnded() override; |
| |
| private: |
| void StartMirrorMode(); |
| void EndMirrorMode(); |
| |
| bool save_preference_ = true; |
| |
| // True if the device was in mirror mode before siwtching to tablet mode. |
| bool was_in_mirror_mode_ = false; |
| |
| base::WeakPtrFactory<DisplayConfigurationObserver> weak_ptr_factory_{this}; |
| |
| DISALLOW_COPY_AND_ASSIGN(DisplayConfigurationObserver); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_ |