--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/iptel_plat/vccpropertyhandler_api/inc/vccuipspropertylistener.h	Mon Jan 18 20:12:36 2010 +0200
@@ -0,0 +1,160 @@
+/*
+* 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:   Active object that tracks changes on a PS property.
+*
+*/
+
+
+
+#ifndef C_VCCPSPROPERTYLISTENER_H
+#define C_VCCPSPROPERTYLISTENER_H
+
+#include <e32base.h>
+#include <e32property.h>
+
+#include "mvccpspropertylistenerobserver.h"
+
+/*
+ *  CVccUiPsPropertyListener notes its observers when the value of the VCC
+ *  property changes.
+ *
+ *  This class can get notifications about the VCC properties.
+ *
+ *  @code
+ *  void CExampleClass::ConstructL()
+ *  {
+ *   CVccUiPsPropertyListener* iHoStatusListener =
+ *              CVccUiPsPropertyListener::NewL( KVccPropKeyHoStatus );
+ *   iHoStatusListener.AddObserver( this );
+ *   iHoStatusListener.Start();
+ *  }
+ *
+ *  void CExampleClass::VccPropertyChangedL( const TUint aKeyId,
+            const TInt aValue )
+ *  {
+ *      if( aKeyId )
+ *          {
+ *          switch( aValue )
+ *              {
+ *              case EVccCsToPsHoStarted:
+ *                  // show UI notification
+ *                  break;
+ *              default:
+ *                  break;
+ *              }
+ *          }
+ *  }
+ *
+ *  @endcode
+ *
+ *  @lib vccuipropertyhandler.lib
+ *  @since S60 v3.2
+ */
+class CVccUiPsPropertyListener : public CActive
+    {
+public:
+
+    /**
+     * Symbian two-phased constructor.
+     *
+     * @param aKeyId Id of a key of the property.
+     */
+    IMPORT_C static CVccUiPsPropertyListener* NewL( const TUint aKeyId );
+
+    /**
+     * Destructor.
+     */
+    IMPORT_C virtual ~CVccUiPsPropertyListener();
+
+    /**
+     * Add an observer
+     * @param aObserver Reference to observer object 
+     */
+    IMPORT_C void AddObserverL( MVccPsPropertyListenerObserver& aObserver );
+
+    /**
+     * Remove an observer.
+     * @param aObserver Reference to observer object
+     */
+    IMPORT_C void RemoveObserver( MVccPsPropertyListenerObserver& aObserver );
+
+    /**
+     * Get the current value of the property.
+     * @return Property value
+     */
+    IMPORT_C TInt CurrentValue();
+
+    /**
+     * Start the listener. The listener subscribes to the given property.
+     */
+    IMPORT_C void Start();
+
+private:
+    
+    /**
+     * Constructor.
+     *
+     * @param aKeyId Id of a key of the property.
+     */
+    CVccUiPsPropertyListener( const TUint aKeyId );
+
+    /**
+     * Symbian 2nd phase constructor
+     */
+    void ConstructL();
+    
+    /**
+     * Notifies the observers about the Ho state change.
+     */
+    void NotifyObserversL();
+
+// from base class CActive.
+
+    /**
+     * @see CActive::RunL()
+     */
+    void RunL();
+
+    /**
+     * @see CActive::DoCancel()
+     */
+    void DoCancel();
+
+private: //data
+
+    /**
+     * The uid of the property category to be watched.
+     */
+    TUid iCategoryId;
+
+    /**
+     * The property key uid to be watched.
+     */
+    TUint iKeyId;
+
+    /**
+     * the property category.
+     */
+    RProperty iProperty;
+
+    /**
+     * Obsevers for callback from this.
+     * Observers are not owned.
+     */
+    RPointerArray<MVccPsPropertyListenerObserver> iObservers;
+
+    };
+
+#endif // C_VCCPSPROPERTYLISTENER_H
+