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// Copyright 2013 The Chromium Authors
// 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/public/cpp/tablet_mode_observer.h"
#include "base/compiler_specific.h"
#include "base/memory/weak_ptr.h"
#include "ui/display/display_observer.h"
#include "ui/display/manager/display_manager_observer.h"
namespace display {
enum class TabletState;
} // namespace display
namespace ash {
// DisplayConfigurationObserver observes and saves
// the change of display configurations.
class ASH_EXPORT DisplayConfigurationObserver
: public display::DisplayManagerObserver,
public display::DisplayObserver {
public:
DisplayConfigurationObserver();
DisplayConfigurationObserver(const DisplayConfigurationObserver&) = delete;
DisplayConfigurationObserver& operator=(const DisplayConfigurationObserver&) =
delete;
~DisplayConfigurationObserver() override;
protected:
// display::DisplayManagerObserver:
void OnDisplaysInitialized() override;
void OnDidApplyDisplayChanges() override;
// display::DisplayObserver:
void OnDisplayTabletStateChanged(display::TabletState state) override;
private:
void StartMirrorMode();
void EndMirrorMode();
// True if the device was in mirror mode before siwtching to tablet mode.
bool was_in_mirror_mode_ = false;
display::ScopedDisplayObserver display_observer_{this};
base::WeakPtrFactory<DisplayConfigurationObserver> weak_ptr_factory_{this};
};
} // namespace ash
#endif // ASH_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_
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