forked from mirrors/gecko-dev
feb58414e5
Depends on D65182 Differential Revision: https://phabricator.services.mozilla.com/D65183 --HG-- extra : moz-landing-system : lando
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_power_PowerManagerService_h
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#define mozilla_dom_power_PowerManagerService_h
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#include "nsCOMPtr.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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#include "nsTArray.h"
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#include "nsIDOMWakeLockListener.h"
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#include "nsIPowerManagerService.h"
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#include "mozilla/HalWakeLockInformation.h"
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#include "mozilla/StaticPtr.h"
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#include "mozilla/dom/WakeLock.h"
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namespace mozilla {
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namespace dom {
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class ContentParent;
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namespace power {
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class PowerManagerService : public nsIPowerManagerService,
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public hal::WakeLockObserver {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIPOWERMANAGERSERVICE
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PowerManagerService() = default;
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static already_AddRefed<PowerManagerService> GetInstance();
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void Init();
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// Implement WakeLockObserver
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void Notify(const hal::WakeLockInformation& aWakeLockInfo) override;
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/**
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* Acquire a wake lock on behalf of a given process (aContentParent).
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*
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* This method stands in contrast to nsIPowerManagerService::NewWakeLock,
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* which acquires a wake lock on behalf of the /current/ process.
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*
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* NewWakeLockOnBehalfOfProcess is different from NewWakeLock in that
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*
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* - The wake lock unlocks itself if the /given/ process dies, and
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* - The /given/ process shows up in WakeLockInfo::lockingProcesses.
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*
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*/
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already_AddRefed<WakeLock> NewWakeLockOnBehalfOfProcess(
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const nsAString& aTopic, ContentParent* aContentParent);
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already_AddRefed<WakeLock> NewWakeLock(const nsAString& aTopic,
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nsPIDOMWindowInner* aWindow,
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mozilla::ErrorResult& aRv);
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private:
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~PowerManagerService();
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void ComputeWakeLockState(const hal::WakeLockInformation& aWakeLockInfo,
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nsAString& aState);
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static StaticRefPtr<PowerManagerService> sSingleton;
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nsTArray<nsCOMPtr<nsIDOMMozWakeLockListener>> mWakeLockListeners;
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};
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} // namespace power
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_power_PowerManagerService_h
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