--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wvuing/wvaudiomanager/Src/CCAPropertyObserver.cpp	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,141 @@
+/*
+* Copyright (c) 2004-2005 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:  Publish & Subscribe property change observer implementation
+*
+*/
+
+
+// INCLUDE FILES
+#include "CCAPropertyObserver.h"
+#include "MCAPropertyNotificationObserver.h"
+
+#include <bautils.h>
+#include <barsc.h>
+#include <e32property.h>
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CCAPropertyObserver::CCAPropertyObserver
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CCAPropertyObserver::CCAPropertyObserver(
+    MCAPropertyNotificationObserver& aObserver )
+        : CActive( CActive::EPriorityLow ),
+        iObserver( aObserver )
+    {
+    CActiveScheduler::Add( this );
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCAPropertyObserver::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CCAPropertyObserver* CCAPropertyObserver::NewL(
+    MCAPropertyNotificationObserver& aObserver )
+    {
+    CCAPropertyObserver* self = new( ELeave ) CCAPropertyObserver( aObserver );
+    return self;
+    }
+
+
+// Destructor
+CCAPropertyObserver::~CCAPropertyObserver()
+    {
+    if ( IsActive() )
+        {
+        Cancel();
+        }
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCAPropertyObserver::ObservePropertyChangeL
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCAPropertyObserver::ObservePropertyChangeL( TUid aCategory, TUint aKey )
+    {
+    if ( IsActive() )
+        {
+        return;
+        }
+    User::LeaveIfError( iProperty.Attach( aCategory, aKey ) );
+    iKey = aKey;
+    iCategory = aCategory;
+    iProperty.Subscribe( iStatus );
+    SetActive();
+    }
+
+// -----------------------------------------------------------------------------
+// CCAPropertyObserver::CancelObserve
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCAPropertyObserver::CancelObserve()
+    {
+    if ( IsActive() )
+        {
+        Cancel();
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CCAPropertyObserver::RunL
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCAPropertyObserver::RunL()
+    {
+    iProperty.Subscribe( iStatus );
+    SetActive();
+    iObserver.HandlePropertyNotificationEventL( iCategory, iKey );
+    }
+
+// -----------------------------------------------------------------------------
+// CCAPropertyObserver::DoCancel
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCAPropertyObserver::DoCancel()
+    {
+    iProperty.Cancel();
+    }
+
+// -----------------------------------------------------------------------------
+// CCAPropertyObserver::Category
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TUid CCAPropertyObserver::Category()
+    {
+    return iCategory;
+    }
+
+// -----------------------------------------------------------------------------
+// CCAPropertyObserver::Key
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TUint CCAPropertyObserver::Key()
+    {
+    return iKey;
+    }
+
+//  End of File