/*

* ===========================================================================

*  Name        : HgPropListener.cpp

*  Part of     : Hg

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

*

*  Copyright © 2008 Nokia Corporation.

*  This material, including documentation and any related 

*  computer programs, is protected by copyright controlled by 

*  Nokia Corporation. All rights are reserved. Copying, 

*  including reproducing, storing, adapting or translating, any 

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

*  Nokia Corporation. This material also contains confidential 

*  information which may not be disclosed to others without the 

*  prior written consent of Nokia Corporation.

* ===========================================================================

*/

#include <e32cmn.h>

#include "hgproplistener.h"

EXPORT_C CHgPropertyListener::CHgPropertyListener(

        TUid aCategory, TUint aKey, MHgPropertyChangeObserver& aObserver )

	: CActive( CActive::EPriorityStandard),

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

	{

	CActiveScheduler::Add( this );

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

	if ( err == KErrNone )

		{

		iProperty.Subscribe( iStatus );

		SetActive();

		}

	}

EXPORT_C CHgPropertyListener::~CHgPropertyListener()

	{

	Cancel();

	iProperty.Close();

	}

void CHgPropertyListener::DoCancel()

	{

	iProperty.Cancel();

	}

void CHgPropertyListener::RunL()

	{

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

		{

		iObserver.PropertyChanged( iCategory, iKey );

		iProperty.Subscribe( iStatus );

		SetActive();

		}

	}    

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

	{

	iProperty.Subscribe( iStatus );

	SetActive();

	return KErrNone;

	}

// end of file