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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_ARC_IDLE_MANAGER_ARC_DISPLAY_POWER_OBSERVER_H_
#define CHROME_BROWSER_ASH_ARC_IDLE_MANAGER_ARC_DISPLAY_POWER_OBSERVER_H_
#include "chromeos/ash/components/throttle/throttle_observer.h"
#include "ui/display/manager/display_configurator.h"
namespace arc {
inline constexpr char kArcDisplayPowerObserverName[] =
"ArcDisplayPowerObserver";
// Listens to ARC power events and enforces throttle when display is off.
// Enforcing throttle leads to idle state, ultimately leading to doze mode.
class ArcDisplayPowerObserver : public ash::ThrottleObserver,
public display::DisplayConfigurator::Observer {
public:
ArcDisplayPowerObserver();
ArcDisplayPowerObserver(const ArcDisplayPowerObserver&) = delete;
ArcDisplayPowerObserver& operator=(const ArcDisplayPowerObserver&) = delete;
~ArcDisplayPowerObserver() override = default;
// chromeos::ThrottleObserver:
void StartObserving(content::BrowserContext* context,
const ObserverStateChangedCallback& callback) override;
// Callers must call StopObserving() once for every use of StartObserving(),
// and must not destroy this object while in Observing state.
void StopObserving() override;
// DisplayConfigurator::Observer:
void OnPowerStateChanged(chromeos::DisplayPowerState power_state) override;
};
} // namespace arc
#endif // CHROME_BROWSER_ASH_ARC_IDLE_MANAGER_ARC_DISPLAY_POWER_OBSERVER_H_
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