diff -r 000000000000 -r f72a12da539e idlehomescreen/xmluicontroller/src/psobserver.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/xmluicontroller/src/psobserver.cpp	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,86 @@
+/*
+* Copyright (c) 2005-2008 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:  Observer for changes in Publish & Subscribe keys
+*
+*/
+
+
+#include "psobserver.h"
+#include "mpscallback.h"
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+using namespace AiXmlUiController;
+
+CPSObserver::CPSObserver( MPSCallback& aCallback, TUid aCategory, TInt aKey ) :
+    CActive( CActive::EPriorityStandard ),
+	iCallback( aCallback ),	
+	iCategory( aCategory ), 
+	iKey( aKey )
+    {
+    CActiveScheduler::Add( this );
+    }
+
+CPSObserver* CPSObserver::NewL( MPSCallback& aCallback, TUid aCategory, TInt aKey )
+    {
+    CPSObserver* self = new( ELeave ) CPSObserver( aCallback, aCategory, aKey );
+    CleanupStack::PushL( self );
+    self->ConstructL();    
+    CleanupStack::Pop( self );
+    return self;
+    }
+    
+CPSObserver::~CPSObserver()
+    {
+    Cancel();
+    }
+
+void CPSObserver::ConstructL()
+    {
+    // subscribe for changes
+    User::LeaveIfError( iProperty.Attach( iCategory, iKey ) );
+    iProperty.Subscribe( iStatus );
+    SetActive();
+    }
+
+void CPSObserver::RunL()
+	{
+    iProperty.Subscribe( iStatus );
+    SetActive();
+
+    TInt value;
+    if( iProperty.Get( iCategory, iKey, value ) != KErrNotFound )
+        {
+		iCallback.ValueUpdatedL( iKey, value );
+        }
+	}
+
+TInt CPSObserver::RunError()
+	{
+	Cancel();
+	return KErrNone;		
+	}
+
+void CPSObserver::DoCancel()
+	{
+    iProperty.Close();
+	}
+
+TInt CPSObserver::GetValue( TInt &aValue ) const
+    {
+    return iProperty.Get( iCategory, iKey, aValue );
+    }
+
+
+//  End of File