michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: #ifndef mozilla_dom_power_PowerManagerService_h
michael@0: #define mozilla_dom_power_PowerManagerService_h
michael@0: 
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsDataHashtable.h"
michael@0: #include "nsHashKeys.h"
michael@0: #include "nsTArray.h"
michael@0: #include "nsIPowerManagerService.h"
michael@0: #include "mozilla/Observer.h"
michael@0: #include "Types.h"
michael@0: #include "mozilla/StaticPtr.h"
michael@0: #include "mozilla/dom/WakeLock.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: class ContentParent;
michael@0: 
michael@0: namespace power {
michael@0: 
michael@0: class PowerManagerService
michael@0:   : public nsIPowerManagerService
michael@0:   , public WakeLockObserver
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS
michael@0:   NS_DECL_NSIPOWERMANAGERSERVICE
michael@0: 
michael@0:   static already_AddRefed<PowerManagerService> GetInstance();
michael@0: 
michael@0:   void Init();
michael@0: 
michael@0:   // Implement WakeLockObserver
michael@0:   void Notify(const hal::WakeLockInformation& aWakeLockInfo);
michael@0: 
michael@0:   /**
michael@0:    * Acquire a wake lock on behalf of a given process (aContentParent).
michael@0:    *
michael@0:    * This method stands in contrast to nsIPowerManagerService::NewWakeLock,
michael@0:    * which acquires a wake lock on behalf of the /current/ process.
michael@0:    *
michael@0:    * NewWakeLockOnBehalfOfProcess is different from NewWakeLock in that
michael@0:    *
michael@0:    *  - The wake lock unlocks itself if the /given/ process dies, and
michael@0:    *  - The /given/ process shows up in WakeLockInfo::lockingProcesses.
michael@0:    *
michael@0:    */
michael@0:   already_AddRefed<WakeLock>
michael@0:   NewWakeLockOnBehalfOfProcess(const nsAString& aTopic,
michael@0:                                ContentParent* aContentParent);
michael@0: 
michael@0:   already_AddRefed<WakeLock>
michael@0:   NewWakeLock(const nsAString& aTopic, nsIDOMWindow* aWindow,
michael@0:               mozilla::ErrorResult& aRv);
michael@0: 
michael@0: private:
michael@0: 
michael@0:   ~PowerManagerService();
michael@0: 
michael@0:   void ComputeWakeLockState(const hal::WakeLockInformation& aWakeLockInfo,
michael@0:                             nsAString &aState);
michael@0: 
michael@0:   void SyncProfile();
michael@0: 
michael@0:   static StaticRefPtr<PowerManagerService> sSingleton;
michael@0: 
michael@0:   nsTArray<nsCOMPtr<nsIDOMMozWakeLockListener> > mWakeLockListeners;
michael@0:   
michael@0:   int32_t mWatchdogTimeoutSecs;
michael@0: };
michael@0: 
michael@0: } // namespace power
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // mozilla_dom_power_PowerManagerService_h