File: PowerManagerService.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_power_PowerManagerService_h
#define mozilla_dom_power_PowerManagerService_h

#include "mozilla/HalWakeLockInformation.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/dom/WakeLock.h"
#include "nsCOMPtr.h"
#include "nsHashKeys.h"
#include "nsIDOMWakeLockListener.h"
#include "nsIPowerManagerService.h"
#include "nsTArray.h"

namespace mozilla::dom {

class ContentParent;

namespace power {

class PowerManagerService : public nsIPowerManagerService,
                            public hal::WakeLockObserver {
 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIPOWERMANAGERSERVICE

  PowerManagerService() = default;

  static already_AddRefed<PowerManagerService> GetInstance();

  void Init();

  // Implement WakeLockObserver
  void Notify(const hal::WakeLockInformation& aWakeLockInfo) override;

  already_AddRefed<WakeLock> NewWakeLock(const nsAString& aTopic,
                                         nsPIDOMWindowInner* aWindow,
                                         mozilla::ErrorResult& aRv);

 private:
  ~PowerManagerService();

  void ComputeWakeLockState(const hal::WakeLockInformation& aWakeLockInfo,
                            nsAString& aState);

  static StaticRefPtr<PowerManagerService> sSingleton;

  nsTArray<nsCOMPtr<nsIDOMMozWakeLockListener>> mWakeLockListeners;
};

}  // namespace power
}  // namespace mozilla::dom

#endif  // mozilla_dom_power_PowerManagerService_h