diff -r fb3763350a08 -r 4d54b72983ae taskswitcher/contextengine/tsctxutils/src/tsproplistener.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/taskswitcher/contextengine/tsctxutils/src/tsproplistener.cpp	Tue Jan 26 11:48:23 2010 +0200
@@ -0,0 +1,83 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+#include <e32cmn.h>
+#include "tsproplistener.h"
+
+// --------------------------------------------------------------------------
+// CTsPropertyListener::CTsPropertyListener
+// --------------------------------------------------------------------------
+//
+EXPORT_C CTsPropertyListener::CTsPropertyListener(
+        TUid aCategory, TUint aKey, MTsPropertyChangeObserver& 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();
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CTsPropertyListener::~CTsPropertyListener
+// --------------------------------------------------------------------------
+//
+EXPORT_C CTsPropertyListener::~CTsPropertyListener()
+    {
+    Cancel();
+    iProperty.Close();
+    }
+
+// --------------------------------------------------------------------------
+// CTsPropertyListener::DoCancel
+// --------------------------------------------------------------------------
+//
+void CTsPropertyListener::DoCancel()
+    {
+    iProperty.Cancel();
+    }
+    
+// --------------------------------------------------------------------------
+// CTsPropertyListener::RunL
+// --------------------------------------------------------------------------
+//
+void CTsPropertyListener::RunL()
+    {
+    if ( iStatus.Int() != KErrCancel ) // when cancelling the subscribe it completes with KErrCancel
+        {
+        iObserver.PropertyChanged( iCategory, iKey );
+        iProperty.Subscribe( iStatus );
+        SetActive();
+        }
+    }    
+
+// --------------------------------------------------------------------------
+// CTsPropertyListener::RunError
+// --------------------------------------------------------------------------
+//
+TInt CTsPropertyListener::RunError( TInt /*aError*/ )
+    {
+    iProperty.Subscribe( iStatus );
+    SetActive();
+    return KErrNone;
+    }
+    
+// end of file