gecko-dev/dom/power/PowerManagerService.h

76 lines
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsIPowerManagerService.h"
#include "mozilla/Observer.h"
#include "Types.h"
#include "mozilla/StaticPtr.h"
namespace mozilla {
namespace dom {
class ContentParent;
namespace power {
class PowerManagerService
: public nsIPowerManagerService
, public WakeLockObserver
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIPOWERMANAGERSERVICE
static already_AddRefed<PowerManagerService> GetInstance();
void Init();
// Implement WakeLockObserver
void Notify(const hal::WakeLockInformation& aWakeLockInfo);
/**
* 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<nsIDOMMozWakeLock>
NewWakeLockOnBehalfOfProcess(const nsAString& aTopic,
ContentParent* aContentParent);
private:
~PowerManagerService();
void ComputeWakeLockState(const hal::WakeLockInformation& aWakeLockInfo,
nsAString &aState);
void SyncProfile();
static StaticRefPtr<PowerManagerService> sSingleton;
nsTArray<nsCOMPtr<nsIDOMMozWakeLockListener> > mWakeLockListeners;
int32_t mWatchdogTimeoutSecs;
};
} // namespace power
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_power_PowerManagerService_h