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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 "nsCOMPtr.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
#include "nsTArray.h"
#include "nsIDOMWakeLockListener.h"
#include "nsIPowerManagerService.h"
#include "mozilla/HalWakeLockInformation.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/dom/WakeLock.h"
namespace mozilla {
namespace 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;
/**
* Acquire a wake lock on behalf of a given process (aContentParent).
*
* This method stands in contrast to nsIPowerManagerService::NewWakeLock,
* which acquires a wake lock on behalf of the /current/ process.
*
* NewWakeLockOnBehalfOfProcess is different from NewWakeLock in that
*
* - The wake lock unlocks itself if the /given/ process dies, and
* - The /given/ process shows up in WakeLockInfo::lockingProcesses.
*
*/
already_AddRefed<WakeLock> NewWakeLockOnBehalfOfProcess(
const nsAString& aTopic, ContentParent* aContentParent);
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 dom
} // namespace mozilla
#endif // mozilla_dom_power_PowerManagerService_h