--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/taskswitcher/contextengine/hgctxutils/src/hgproplistener.cpp	Mon Jan 18 20:10:36 2010 +0200
@@ -0,0 +1,66 @@
+/*
+* ===========================================================================
+*  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