LCOV - code coverage report
Current view: directory - dom/network/src - Connection.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 61 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                 :  *   Mounir Lamouri <mounir.lamouri@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 <limits>
      39                 : #include "mozilla/Hal.h"
      40                 : #include "Connection.h"
      41                 : #include "nsIDOMClassInfo.h"
      42                 : #include "mozilla/Preferences.h"
      43                 : #include "nsDOMEvent.h"
      44                 : #include "Constants.h"
      45                 : 
      46                 : /**
      47                 :  * We have to use macros here because our leak analysis tool things we are
      48                 :  * leaking strings when we have |static const nsString|. Sad :(
      49                 :  */
      50                 : #define CHANGE_EVENT_NAME NS_LITERAL_STRING("change")
      51                 : 
      52                 : DOMCI_DATA(MozConnection, mozilla::dom::network::Connection)
      53                 : 
      54                 : namespace mozilla {
      55                 : namespace dom {
      56                 : namespace network {
      57                 : 
      58                 : const char* Connection::sMeteredPrefName     = "dom.network.metered";
      59                 : const bool  Connection::sMeteredDefaultValue = false;
      60                 : 
      61            1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(Connection)
      62                 : 
      63               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(Connection,
      64                 :                                                   nsDOMEventTargetHelper)
      65               0 :   NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(change)
      66               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
      67                 : 
      68               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(Connection,
      69                 :                                                 nsDOMEventTargetHelper)
      70               0 :   NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(change)
      71               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
      72                 : 
      73               0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(Connection)
      74               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMMozConnection)
      75               0 :   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMMozConnection)
      76               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(MozConnection)
      77               0 : NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
      78                 : 
      79               0 : NS_IMPL_ADDREF_INHERITED(Connection, nsDOMEventTargetHelper)
      80               0 : NS_IMPL_RELEASE_INHERITED(Connection, nsDOMEventTargetHelper)
      81                 : 
      82               0 : Connection::Connection()
      83                 :   : mCanBeMetered(kDefaultCanBeMetered)
      84               0 :   , mBandwidth(kDefaultBandwidth)
      85                 : {
      86               0 : }
      87                 : 
      88                 : void
      89               0 : Connection::Init(nsPIDOMWindow* aWindow)
      90                 : {
      91               0 :   BindToOwner(aWindow);
      92                 : 
      93               0 :   hal::RegisterNetworkObserver(this);
      94                 : 
      95               0 :   hal::NetworkInformation networkInfo;
      96               0 :   hal::GetCurrentNetworkInformation(&networkInfo);
      97                 : 
      98               0 :   UpdateFromNetworkInfo(networkInfo);
      99               0 : }
     100                 : 
     101                 : void
     102               0 : Connection::Shutdown()
     103                 : {
     104               0 :   hal::UnregisterNetworkObserver(this);
     105               0 : }
     106                 : 
     107                 : NS_IMETHODIMP
     108               0 : Connection::GetBandwidth(double* aBandwidth)
     109                 : {
     110               0 :   if (mBandwidth == kDefaultBandwidth) {
     111               0 :     *aBandwidth = std::numeric_limits<double>::infinity();
     112               0 :     return NS_OK;
     113                 :   }
     114                 : 
     115               0 :   *aBandwidth = mBandwidth;
     116               0 :   return NS_OK;
     117                 : }
     118                 : 
     119                 : NS_IMETHODIMP
     120               0 : Connection::GetMetered(bool* aMetered)
     121                 : {
     122               0 :   if (!mCanBeMetered) {
     123               0 :     *aMetered = false;
     124               0 :     return NS_OK;
     125                 :   }
     126                 : 
     127                 :   *aMetered = Preferences::GetBool(sMeteredPrefName,
     128               0 :                                    sMeteredDefaultValue);
     129               0 :   return NS_OK;
     130                 : }
     131                 : 
     132               0 : NS_IMPL_EVENT_HANDLER(Connection, change)
     133                 : 
     134                 : nsresult
     135               0 : Connection::DispatchTrustedEventToSelf(const nsAString& aEventName)
     136                 : {
     137               0 :   nsRefPtr<nsDOMEvent> event = new nsDOMEvent(nsnull, nsnull);
     138               0 :   nsresult rv = event->InitEvent(aEventName, false, false);
     139               0 :   NS_ENSURE_SUCCESS(rv, rv);
     140                 : 
     141               0 :   rv = event->SetTrusted(PR_TRUE);
     142               0 :   NS_ENSURE_SUCCESS(rv, rv);
     143                 : 
     144                 :   bool dummy;
     145               0 :   rv = DispatchEvent(event, &dummy);
     146               0 :   NS_ENSURE_SUCCESS(rv, rv);
     147                 : 
     148               0 :   return NS_OK;
     149                 : }
     150                 : 
     151                 : void
     152               0 : Connection::UpdateFromNetworkInfo(const hal::NetworkInformation& aNetworkInfo)
     153                 : {
     154               0 :   mBandwidth = aNetworkInfo.bandwidth();
     155               0 :   mCanBeMetered = aNetworkInfo.canBeMetered();
     156               0 : }
     157                 : 
     158                 : void
     159               0 : Connection::Notify(const hal::NetworkInformation& aNetworkInfo)
     160                 : {
     161               0 :   double previousBandwidth = mBandwidth;
     162               0 :   bool previousCanBeMetered = mCanBeMetered;
     163                 : 
     164               0 :   UpdateFromNetworkInfo(aNetworkInfo);
     165                 : 
     166               0 :   if (previousBandwidth == mBandwidth &&
     167                 :       previousCanBeMetered == mCanBeMetered) {
     168               0 :     return;
     169                 :   }
     170                 : 
     171               0 :   DispatchTrustedEventToSelf(CHANGE_EVENT_NAME);
     172                 : }
     173                 : 
     174                 : } // namespace network
     175                 : } // namespace dom
     176            4392 : } // namespace mozilla
     177                 : 

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