diff -r 000000000000 -r 2f259fa3e83a uifw/AvKon/AknTransitionUtils/src/aknpsobserver.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uifw/AvKon/AknTransitionUtils/src/aknpsobserver.cpp	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,113 @@
+/*
+* Copyright (c) 2007 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:  Transition utilities.
+*
+*/
+
+
+#include <e32property.h>
+
+#include "aknpsobserver.h"
+
+//----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+//
+CAknPsObserver* CAknPsObserver::NewL( MAknPsObserver* aClient, 
+                                      const TUid aCategory, 
+                                      const TUint aKey )
+    {
+    CAknPsObserver* self = new ( ELeave ) CAknPsObserver( aClient, aCategory, 
+                                                          aKey);
+    CleanupStack::PushL( self );
+    self->Construct( aCategory, aKey );
+    CleanupStack::Pop();
+    return self;
+    }
+
+//----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+//
+CAknPsObserver* CAknPsObserver::New( MAknPsObserver* aClient, 
+                                     const TUid aCategory, 
+                                     const TUint aKey )
+    {
+    CAknPsObserver* self = new CAknPsObserver( aClient, aCategory, aKey);
+    if(self)
+    	{
+	    self->Construct( aCategory, aKey );
+    	}
+    return self;
+    }
+    
+//----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+//
+CAknPsObserver::~CAknPsObserver()
+    {
+    Cancel();
+    iProperty.Close();
+    }
+    
+//----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+//
+void CAknPsObserver::DoCancel()
+    {
+    iProperty.Cancel();
+    }
+    
+//----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+//
+void CAknPsObserver::RunL()
+    {
+    if ( iStatus.Int() == KErrNone)
+        {
+        TInt val;
+        iProperty.Subscribe( iStatus );
+        iProperty.Get( val );
+        SetActive();
+        iClient->PsValueUpdated( iCategory, iKey, val );
+        }
+    }
+
+//----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+//
+void CAknPsObserver::Construct( const TUid aCategory, const TUint aKey )
+    {
+    CActiveScheduler::Add( this );
+    iProperty.Attach( aCategory, aKey );
+    iProperty.Subscribe( iStatus );
+    SetActive();
+    }
+
+//----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+//
+TInt CAknPsObserver::GetCurrentValue( TInt& aValue )
+    {
+    return iProperty.Get( aValue );
+    }
+
+//----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+//
+CAknPsObserver::CAknPsObserver( MAknPsObserver* aClient, const TUid aCategory,
+                                const TUint aKey )
+    : CActive( EPriorityStandard ), iClient( aClient ),
+      iCategory( aCategory ), iKey( aKey )
+    {
+    }
+