The Tor Browser: dom/power/PowerManagerService.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #ifndef mozilla_dom_power_PowerManagerService_h

     6 #define mozilla_dom_power_PowerManagerService_h

     8 #include "nsCOMPtr.h"

     9 #include "nsDataHashtable.h"

    10 #include "nsHashKeys.h"

    11 #include "nsTArray.h"

    12 #include "nsIPowerManagerService.h"

    13 #include "mozilla/Observer.h"

    14 #include "Types.h"

    15 #include "mozilla/StaticPtr.h"

    16 #include "mozilla/dom/WakeLock.h"

    18 namespace mozilla {

    19 namespace dom {

    21 class ContentParent;

    23 namespace power {

    25 class PowerManagerService

    26   : public nsIPowerManagerService

    27   , public WakeLockObserver

    28 {

    29 public:

    30   NS_DECL_ISUPPORTS

    31   NS_DECL_NSIPOWERMANAGERSERVICE

    33   static already_AddRefed<PowerManagerService> GetInstance();

    35   void Init();

    37   // Implement WakeLockObserver

    38   void Notify(const hal::WakeLockInformation& aWakeLockInfo);

    40   /**

    41    * Acquire a wake lock on behalf of a given process (aContentParent).

    42    *

    43    * This method stands in contrast to nsIPowerManagerService::NewWakeLock,

    44    * which acquires a wake lock on behalf of the /current/ process.

    45    *

    46    * NewWakeLockOnBehalfOfProcess is different from NewWakeLock in that

    47    *

    48    *  - The wake lock unlocks itself if the /given/ process dies, and

    49    *  - The /given/ process shows up in WakeLockInfo::lockingProcesses.

    50    *

    51    */

    52   already_AddRefed<WakeLock>

    53   NewWakeLockOnBehalfOfProcess(const nsAString& aTopic,

    54                                ContentParent* aContentParent);

    56   already_AddRefed<WakeLock>

    57   NewWakeLock(const nsAString& aTopic, nsIDOMWindow* aWindow,

    58               mozilla::ErrorResult& aRv);

    60 private:

    62   ~PowerManagerService();

    64   void ComputeWakeLockState(const hal::WakeLockInformation& aWakeLockInfo,

    65                             nsAString &aState);

    67   void SyncProfile();

    69   static StaticRefPtr<PowerManagerService> sSingleton;

    71   nsTArray<nsCOMPtr<nsIDOMMozWakeLockListener> > mWakeLockListeners;

    73   int32_t mWatchdogTimeoutSecs;

    74 };

    76 } // namespace power

    77 } // namespace dom

    78 } // namespace mozilla

    80 #endif // mozilla_dom_power_PowerManagerService_h

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