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ash / public / cpp / night_light_controller.h [blame]
// Copyright 2019 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_PUBLIC_CPP_NIGHT_LIGHT_CONTROLLER_H_
#define ASH_PUBLIC_CPP_NIGHT_LIGHT_CONTROLLER_H_
#include "ash/public/cpp/ash_public_export.h"
#include "base/observer_list.h"
namespace ash {
class ASH_PUBLIC_EXPORT NightLightController {
public:
class Observer {
public:
// Emitted when the NightLight status is changed.
virtual void OnNightLightEnabledChanged(bool enabled) {}
protected:
virtual ~Observer() {}
};
static NightLightController* GetInstance();
NightLightController(const NightLightController&) = delete;
NightLightController& operator=(const NightLightController&) = delete;
// Whether Night Light is enabled.
virtual bool IsNightLightEnabled() const = 0;
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
protected:
NightLightController();
virtual ~NightLightController();
base::ObserverList<Observer>::Unchecked observers_;
};
} // namespace ash
#endif // ASH_PUBLIC_CPP_NIGHT_LIGHT_CONTROLLER_H_