1 /*

     2 * Copyright (c) 2008-2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Monitors the file system for changes in a file.

    15 *

    16 */

    17 

    18 

    19 #include <mpxlog.h>

    20 #include <mpxconstants.h>

    21 

    22 #include "pnsmonitor.h"

    23 #include "pnsmonitorobserver.h"

    24 

    25 // RProperty key to identify the case when Music Player launching

    26 // in the background

    27 const TInt KMPXLaunchingOnBackground( 100 );

    28 

    29 // ---------------------------------------------------------------------------

    30 // Constructor

    31 // ---------------------------------------------------------------------------

    32 //

    33 CPNSMonitor::CPNSMonitor( MPNSMonitorObserver& aObserver )

    34         : CActive( CActive::EPriorityLow ),

    35         iObserver( aObserver )

    36     {

    37     }

    38 

    39 // ---------------------------------------------------------------------------

    40 // Second Phase Constructor

    41 // ---------------------------------------------------------------------------

    42 //

    43 void CPNSMonitor::ConstructL()

    44     {

    45     User::LeaveIfError( iPropertyHandler.Attach( KAppUidMusicPlayerX,

    46             KMPXLaunchingOnBackground ) );

    47     CActiveScheduler::Add( this );

    48     }

    49 

    50 // ---------------------------------------------------------------------------

    51 // Two-phased constructor

    52 // ---------------------------------------------------------------------------

    53 //

    54 CPNSMonitor* CPNSMonitor::NewL( MPNSMonitorObserver& aObserver )

    55     {

    56     CPNSMonitor* self = new( ELeave ) CPNSMonitor( aObserver );

    57     CleanupStack::PushL( self );

    58     self->ConstructL();

    59     CleanupStack::Pop( self );

    60     return self;

    61     }

    62 

    63 // ---------------------------------------------------------------------------

    64 // Destructor

    65 // ---------------------------------------------------------------------------

    66 //

    67 CPNSMonitor::~CPNSMonitor()

    68     {

    69     Cancel();

    70     iPropertyHandler.Close();

    71     }

    72 

    73 // ---------------------------------------------------------------------------

    74 // Starts monitoring

    75 // ---------------------------------------------------------------------------

    76 //

    77 void CPNSMonitor::Start()

    78     {

    79     MPX_DEBUG1("CPNSMonitor::Start <---");

    80     iPropertyHandler.Subscribe( iStatus );

    81     SetActive();

    82     MPX_DEBUG1("CPNSMonitor::Start --->");

    83     }

    84 

    85 // ---------------------------------------------------------------------------

    86 // RunL callback

    87 // ---------------------------------------------------------------------------

    88 //

    89 void CPNSMonitor::RunL()

    90     {

    91     MPX_DEBUG1("CPNSMonitor::RunL <---");

    92     TInt ret( 0 );

    93     TInt err = RProperty::Get( KAppUidMusicPlayerX,

    94                 KMPXLaunchingOnBackground,

    95                 ret );

    96 

    97     if ( ret )

    98         {

    99         iObserver.OpeningMusicPlayer();

   100         MPX_DEBUG1("CPNSMonitor::RunL - Opening Music Player on the background");

   101         }

   102     

   103 	// Listen again

   104     Start();

   105     

   106     MPX_DEBUG1("CPNSMonitor::RunL --->");

   107     }

   108 

   109 // ---------------------------------------------------------------------------

   110 // Handle Cancelling

   111 // ---------------------------------------------------------------------------

   112 //

   113 void CPNSMonitor::DoCancel()

   114     {

   115     MPX_DEBUG1("CPNSMonitor::DoCancel <---");

   116     // Stop monitoring

   117     iPropertyHandler.Cancel();

   118     MPX_DEBUG1("CPNSMonitor::DoCancel --->");

   119     }

   120 

   121 // ----------------------------------------------------------------------------

   122 // Handles a leave occurring in the request completion event handler RunL()

   123 // ----------------------------------------------------------------------------

   124 //

   125 TInt CPNSMonitor::RunError( TInt aError )

   126     {

   127     MPX_DEBUG2("CPNSMonitor::RunError(%d)", aError );

   128    

   129     // Listen again

   130     Start();

   131     return KErrNone;

   132     }