taskswitcher/contextengine/tsctxutils/src/tsproplistener.cpp
changeset 4 4d54b72983ae
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3:fb3763350a08 4:4d54b72983ae
       
     1 /*
       
     2 * Copyright (c) 2009 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: 
       
    15 *
       
    16 */
       
    17 
       
    18 #include <e32cmn.h>
       
    19 #include "tsproplistener.h"
       
    20 
       
    21 // --------------------------------------------------------------------------
       
    22 // CTsPropertyListener::CTsPropertyListener
       
    23 // --------------------------------------------------------------------------
       
    24 //
       
    25 EXPORT_C CTsPropertyListener::CTsPropertyListener(
       
    26         TUid aCategory, TUint aKey, MTsPropertyChangeObserver& aObserver )
       
    27     : CActive( CActive::EPriorityStandard),
       
    28         iObserver( aObserver ), iCategory( aCategory ), iKey( aKey )
       
    29     {
       
    30     CActiveScheduler::Add( this );
       
    31     TInt err = iProperty.Attach( iCategory, iKey );
       
    32     if ( err == KErrNone )
       
    33         {
       
    34         iProperty.Subscribe( iStatus );
       
    35         SetActive();
       
    36         }
       
    37     }
       
    38 
       
    39 // --------------------------------------------------------------------------
       
    40 // CTsPropertyListener::~CTsPropertyListener
       
    41 // --------------------------------------------------------------------------
       
    42 //
       
    43 EXPORT_C CTsPropertyListener::~CTsPropertyListener()
       
    44     {
       
    45     Cancel();
       
    46     iProperty.Close();
       
    47     }
       
    48 
       
    49 // --------------------------------------------------------------------------
       
    50 // CTsPropertyListener::DoCancel
       
    51 // --------------------------------------------------------------------------
       
    52 //
       
    53 void CTsPropertyListener::DoCancel()
       
    54     {
       
    55     iProperty.Cancel();
       
    56     }
       
    57     
       
    58 // --------------------------------------------------------------------------
       
    59 // CTsPropertyListener::RunL
       
    60 // --------------------------------------------------------------------------
       
    61 //
       
    62 void CTsPropertyListener::RunL()
       
    63     {
       
    64     if ( iStatus.Int() != KErrCancel ) // when cancelling the subscribe it completes with KErrCancel
       
    65         {
       
    66         iObserver.PropertyChanged( iCategory, iKey );
       
    67         iProperty.Subscribe( iStatus );
       
    68         SetActive();
       
    69         }
       
    70     }    
       
    71 
       
    72 // --------------------------------------------------------------------------
       
    73 // CTsPropertyListener::RunError
       
    74 // --------------------------------------------------------------------------
       
    75 //
       
    76 TInt CTsPropertyListener::RunError( TInt /*aError*/ )
       
    77     {
       
    78     iProperty.Subscribe( iStatus );
       
    79     SetActive();
       
    80     return KErrNone;
       
    81     }
       
    82     
       
    83 // end of file