LCOV - code coverage report
Current view: directory - dom/power - PowerManagerService.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 60 2 3.3 %
Date: 2012-06-02 Functions: 18 2 11.1 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is mozilla.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Mozilla Foundation
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2011
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Kan-Ru Chen <kchen@mozilla.com> (Original Author)
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "mozilla/Hal.h"
      39                 : #include "mozilla/HalWakeLock.h"
      40                 : #include "mozilla/ClearOnShutdown.h"
      41                 : #include "nsIDOMWakeLockListener.h"
      42                 : #include "nsIDOMWindow.h"
      43                 : #include "PowerManagerService.h"
      44                 : #include "WakeLock.h"
      45                 : 
      46                 : namespace mozilla {
      47                 : namespace dom {
      48                 : namespace power {
      49                 : 
      50               0 : NS_IMPL_ISUPPORTS1(PowerManagerService, nsIPowerManagerService)
      51                 : 
      52            1464 : /* static */ nsRefPtr<PowerManagerService> PowerManagerService::sSingleton;
      53                 : 
      54                 : /* static */ already_AddRefed<nsIPowerManagerService>
      55               0 : PowerManagerService::GetInstance()
      56                 : {
      57               0 :   if (!sSingleton) {
      58               0 :     sSingleton = new PowerManagerService();
      59               0 :     sSingleton->Init();
      60               0 :     ClearOnShutdown(&sSingleton);
      61                 :   }
      62                 : 
      63               0 :   nsCOMPtr<nsIPowerManagerService> service(do_QueryInterface(sSingleton));
      64               0 :   return service.forget();
      65                 : }
      66                 : 
      67                 : void
      68               0 : PowerManagerService::Init()
      69                 : {
      70               0 :   hal::RegisterWakeLockObserver(this);
      71               0 : }
      72                 : 
      73               0 : PowerManagerService::~PowerManagerService()
      74                 : {
      75               0 :   hal::UnregisterWakeLockObserver(this);
      76               0 : }
      77                 : 
      78                 : void
      79               0 : PowerManagerService::ComputeWakeLockState(const hal::WakeLockInformation& aWakeLockInfo,
      80                 :                                           nsAString &aState)
      81                 : {
      82               0 :   hal::WakeLockState state = hal::ComputeWakeLockState(aWakeLockInfo.numLocks(),
      83               0 :                                                        aWakeLockInfo.numHidden());
      84               0 :   switch (state) {
      85                 :   case hal::WAKE_LOCK_STATE_UNLOCKED:
      86               0 :     aState.AssignLiteral("unlocked");
      87               0 :     break;
      88                 :   case hal::WAKE_LOCK_STATE_HIDDEN:
      89               0 :     aState.AssignLiteral("locked-background");
      90               0 :     break;
      91                 :   case hal::WAKE_LOCK_STATE_VISIBLE:
      92               0 :     aState.AssignLiteral("locked-foreground");
      93               0 :     break;
      94                 :   }
      95               0 : }
      96                 : 
      97                 : void
      98               0 : PowerManagerService::Notify(const hal::WakeLockInformation& aWakeLockInfo)
      99                 : {
     100               0 :   nsAutoString state;
     101               0 :   ComputeWakeLockState(aWakeLockInfo, state);
     102                 : 
     103                 :   /**
     104                 :    * Copy the listeners list before we walk through the callbacks
     105                 :    * because the callbacks may install new listeners. We expect no
     106                 :    * more than one listener per window, so it shouldn't be too long.
     107                 :    */
     108               0 :   nsAutoTArray<nsCOMPtr<nsIDOMMozWakeLockListener>, 2> listeners(mWakeLockListeners);
     109                 : 
     110               0 :   for (PRUint32 i = 0; i < listeners.Length(); ++i) {
     111               0 :     listeners[i]->Callback(aWakeLockInfo.topic(), state);
     112                 :   }
     113               0 : }
     114                 : 
     115                 : NS_IMETHODIMP
     116               0 : PowerManagerService::Reboot()
     117                 : {
     118               0 :   hal::Reboot();
     119               0 :   return NS_OK;
     120                 : }
     121                 : 
     122                 : NS_IMETHODIMP
     123               0 : PowerManagerService::PowerOff()
     124                 : {
     125               0 :   hal::PowerOff();
     126               0 :   return NS_OK;
     127                 : }
     128                 : 
     129                 : NS_IMETHODIMP
     130               0 : PowerManagerService::AddWakeLockListener(nsIDOMMozWakeLockListener *aListener)
     131                 : {
     132               0 :   if (mWakeLockListeners.Contains(aListener))
     133               0 :     return NS_OK;
     134                 : 
     135               0 :   mWakeLockListeners.AppendElement(aListener);
     136               0 :   return NS_OK;
     137                 : }
     138                 : 
     139                 : NS_IMETHODIMP
     140               0 : PowerManagerService::RemoveWakeLockListener(nsIDOMMozWakeLockListener *aListener)
     141                 : {
     142               0 :   mWakeLockListeners.RemoveElement(aListener);
     143               0 :   return NS_OK;
     144                 : }
     145                 : 
     146                 : NS_IMETHODIMP
     147               0 : PowerManagerService::GetWakeLockState(const nsAString &aTopic, nsAString &aState)
     148                 : {
     149               0 :   hal::WakeLockInformation info;
     150               0 :   hal::GetWakeLockInfo(aTopic, &info);
     151                 : 
     152               0 :   ComputeWakeLockState(info, aState);
     153                 : 
     154               0 :   return NS_OK;
     155                 : }
     156                 : 
     157                 : NS_IMETHODIMP
     158               0 : PowerManagerService::NewWakeLock(const nsAString &aTopic,
     159                 :                                  nsIDOMWindow *aWindow,
     160                 :                                  nsIDOMMozWakeLock **aWakeLock)
     161                 : {
     162               0 :   nsRefPtr<WakeLock> wakelock = new WakeLock();
     163               0 :   nsresult rv = wakelock->Init(aTopic, aWindow);
     164               0 :   NS_ENSURE_SUCCESS(rv, rv);
     165                 : 
     166                 :   nsCOMPtr<nsIDOMMozWakeLock> wl =
     167               0 :     do_QueryInterface(NS_ISUPPORTS_CAST(nsIDOMMozWakeLock*, wakelock));
     168               0 :   wl.forget(aWakeLock);
     169                 : 
     170               0 :   return NS_OK;
     171                 : }
     172                 : 
     173                 : } // power
     174                 : } // dom
     175            4392 : } // mozilla

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