1 /*

     2 * ===========================================================================

     3 *  Name        : HgPropListener.cpp

     4 *  Part of     : Hg

     5 *  Description : Active class to get notifications about changes to a P&S property

     6 *

     7 *  Copyright © 2008 Nokia Corporation.

     8 *  This material, including documentation and any related 

     9 *  computer programs, is protected by copyright controlled by 

    10 *  Nokia Corporation. All rights are reserved. Copying, 

    11 *  including reproducing, storing, adapting or translating, any 

    12 *  or all of this material requires the prior written consent   of 

    13 *  Nokia Corporation. This material also contains confidential 

    14 *  information which may not be disclosed to others without the 

    15 *  prior written consent of Nokia Corporation.

    16 * ===========================================================================

    17 */

    18 

    19 #include <e32cmn.h>

    20 

    21 #include "hgproplistener.h"

    22 

    23 EXPORT_C CHgPropertyListener::CHgPropertyListener(

    24         TUid aCategory, TUint aKey, MHgPropertyChangeObserver& aObserver )

    25 	: CActive( CActive::EPriorityStandard),

    26 	    iObserver( aObserver ), iCategory( aCategory ), iKey( aKey )

    27 	{

    28 	CActiveScheduler::Add( this );

    29 	TInt err = iProperty.Attach( iCategory, iKey );

    30 	if ( err == KErrNone )

    31 		{

    32 		iProperty.Subscribe( iStatus );

    33 		SetActive();

    34 		}

    35 	}

    36 

    37 EXPORT_C CHgPropertyListener::~CHgPropertyListener()

    38 	{

    39 	Cancel();

    40 	iProperty.Close();

    41 	}

    42 

    43 void CHgPropertyListener::DoCancel()

    44 	{

    45 	iProperty.Cancel();

    46 	}

    47     

    48 void CHgPropertyListener::RunL()

    49 	{

    50 	if ( iStatus.Int() != KErrCancel ) // when cancelling the subscribe it completes with KErrCancel

    51 		{

    52 		iObserver.PropertyChanged( iCategory, iKey );

    53 		iProperty.Subscribe( iStatus );

    54 		SetActive();

    55 		}

    56 	}    

    57 

    58 TInt CHgPropertyListener::RunError( TInt /*aError*/ )

    59 	{

    60 	iProperty.Subscribe( iStatus );

    61 	SetActive();

    62 	return KErrNone;

    63 	}

    64 

    65 	

    66 // end of file