dom/power/PowerManagerService.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6 #ifndef mozilla_dom_power_PowerManagerService_h
   7 #define mozilla_dom_power_PowerManagerService_h
   8
   9 #include "nsCOMPtr.h"
  10 #include "nsHashKeys.h"
  11 #include "nsTArray.h"
  12 #include "nsIDOMWakeLockListener.h"
  13 #include "nsIPowerManagerService.h"
  14 #include "mozilla/HalWakeLockInformation.h"
  15 #include "mozilla/StaticPtr.h"
  16 #include "mozilla/dom/WakeLock.h"
  17
  18 namespace mozilla::dom {
  19
  20 class ContentParent;
  21
  22 namespace power {
  23
  24 class PowerManagerService : public nsIPowerManagerService,
  25                             public hal::WakeLockObserver {
  26  public:
  27   NS_DECL_ISUPPORTS
  28   NS_DECL_NSIPOWERMANAGERSERVICE
  29
  30   PowerManagerService() = default;
  31
  32   static already_AddRefed<PowerManagerService> GetInstance();
  33
  34   void Init();
  35
  36   // Implement WakeLockObserver
  37   void Notify(const hal::WakeLockInformation& aWakeLockInfo) override;
  38
  39   already_AddRefed<WakeLock> NewWakeLock(const nsAString& aTopic,
  40                                          nsPIDOMWindowInner* aWindow,
  41                                          mozilla::ErrorResult& aRv);
  42
  43  private:
  44   ~PowerManagerService();
  45
  46   void ComputeWakeLockState(const hal::WakeLockInformation& aWakeLockInfo,
  47                             nsAString& aState);
  48
  49   static StaticRefPtr<PowerManagerService> sSingleton;
  50
  51   nsTArray<nsCOMPtr<nsIDOMMozWakeLockListener>> mWakeLockListeners;
  52 };
  53
  54 }  // namespace power
  55 }  // namespace mozilla::dom
  56
  57 #endif  // mozilla_dom_power_PowerManagerService_h