diff -r f742655b05bf -r d38647835c2e callcontinuity/vccpropertyhandler/src/vccuipspropertylistener.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/callcontinuity/vccpropertyhandler/src/vccuipspropertylistener.cpp	Wed Sep 01 12:29:57 2010 +0100
@@ -0,0 +1,209 @@
+/*
+* Copyright (c) 2007-2008 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:   Observes the state of a Vcc P&S property
+*
+*/
+
+
+#include <e32cmn.h>
+#include <e32debug.h>
+#include <vccsubscribekeys.h>
+
+#include "vccuipspropertylistener.h"
+#include "rubydebug.h"
+
+// ======== MEMBER FUNCTIONS ========
+// -----------------------------------------------------------------------------
+// C++ constructor
+// -----------------------------------------------------------------------------
+//
+CVccUiPsPropertyListener::CVccUiPsPropertyListener( const TUint aKeyId )
+    :CActive( EPriorityStandard ),
+     iCategoryId( KPSVccPropertyCategory ),
+     iKeyId( aKeyId )
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// 2nd phase constructor
+// -----------------------------------------------------------------------------
+//
+void CVccUiPsPropertyListener::ConstructL()
+    {
+    RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::ConstructL" );
+    // Attach to categroy and key.
+    User::LeaveIfError( iProperty.Attach( iCategoryId, iKeyId ) );
+    // Add to active scheduler
+    CActiveScheduler::Add( this );
+    }
+
+// -----------------------------------------------------------------------------
+// Constructor
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CVccUiPsPropertyListener* CVccUiPsPropertyListener::NewL(
+    const TUint aKeyId )
+    {
+    RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::NewL" );
+
+    CVccUiPsPropertyListener* self = new ( ELeave ) CVccUiPsPropertyListener(
+                                                    aKeyId );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CVccUiPsPropertyListener::~CVccUiPsPropertyListener()
+    {
+    RUBY_DEBUG0( "CVccUiPsPropertyListener::~CVccUiPsPropertyListener() - ENTER" );
+    Cancel();
+    iProperty.Close();
+    iObservers.Close();
+    RUBY_DEBUG0( "CVccUiPsPropertyListener::~CVccUiPsPropertyListener() - EXIT" );
+    }
+
+// -----------------------------------------------------------------------------
+// Adds a Vcc property observer to the list of observers
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CVccUiPsPropertyListener::AddObserverL(
+    MVccPsPropertyListenerObserver& aObserver )
+    {
+    RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::AddObserverL" );
+
+    if ( iObservers.Find( &aObserver ) == KErrNotFound )
+        {
+        User::LeaveIfError( iObservers.Append( &aObserver ) );
+        }
+    
+    // And then start. Start() do not start if there are no observers
+    // so we must also try to start here after adding an observer
+    // (if somebody has called Start() before this method).
+    Start();
+    }
+
+// -----------------------------------------------------------------------------
+// Removes observer
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CVccUiPsPropertyListener::RemoveObserver(
+    MVccPsPropertyListenerObserver& aObserver )
+    {
+    RUBY_DEBUG_BLOCK( "CVccUiPsPropertyListener::RemoveObserver" );
+    TInt index = iObservers.Find( &aObserver );
+
+    if ( index != KErrNotFound )
+        {
+        iObservers.Remove( index );
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// Fetches the current value of the key
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TInt CVccUiPsPropertyListener::CurrentValue()
+    {
+    RUBY_DEBUG_BLOCK( "CVccUiPsPropertyListener::CurrentValue" );
+    TInt value( KErrNotFound );
+    iProperty.Get( iCategoryId, iKeyId, value );
+    return value;
+    }
+
+// -----------------------------------------------------------------------------
+// Subscribes to property
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CVccUiPsPropertyListener::Start()
+    {
+    RUBY_DEBUG_BLOCK( "CVccUiPsPropertyListener::Start" );
+
+    // If no obsevers, do not start.
+    if ( iObservers.Count() == 0 )
+        {
+        return;
+        }
+    
+    // Subscribe to get updates.
+    if ( !IsActive() )
+        {
+        iProperty.Subscribe( iStatus );       
+        SetActive();
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// Cancels the outstanding subsription request
+// -----------------------------------------------------------------------------
+//
+void CVccUiPsPropertyListener::DoCancel()
+    {
+    RUBY_DEBUG0( "CVccUiPsPropertyListener::DoCancel - ENTER" );
+    iProperty.Cancel();
+    RUBY_DEBUG0( "CVccUiPsPropertyListener::DoCancel - EXIT" );
+    }
+
+// -----------------------------------------------------------------------------
+// Handles the request completion event
+// -----------------------------------------------------------------------------
+//
+void CVccUiPsPropertyListener::RunL()
+    {
+    RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::RunL" );
+    TInt err = iStatus.Int();
+
+    // Re-issue the subscription request if there are observers.
+    // Do this before notifying our observser so that we get all
+    // notifications (if the rest of the RunL takes some time).
+    
+    if ( iObservers.Count() > 0 )
+        {
+        Start();
+        }
+     
+    if ( KErrNone == err )
+        {
+        // Notify property changes to observers.
+        NotifyObserversL();
+        }    
+     }
+
+// -----------------------------------------------------------------------------
+// Notifies all observers about the changed value
+// -----------------------------------------------------------------------------
+//
+void CVccUiPsPropertyListener::NotifyObserversL()
+    {
+    RUBY_DEBUG_BLOCKL( "CVccUiPsPropertyListener::NotifyObserversL" );
+
+    TInt value = CurrentValue();
+
+    RUBY_DEBUG1( " -value[%d]", value);
+
+    for ( TInt i(0) ; i < iObservers.Count() ; i++ )
+        {
+        MVccPsPropertyListenerObserver* observer = iObservers[i];
+
+        if ( observer )
+            {
+            observer->VccPropertyChangedL( iKeyId, value );
+            }
+        }
+    }