--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipappsrv_plat/comms_event_api/inc/mcereferobserver.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,73 @@
+/*
+* Copyright (c) 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:    
+*
+*/
+
+
+
+
+#ifndef MMCEREFEROBSERVER_H
+#define MMCEREFEROBSERVER_H
+
+// INCLUDES
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class CMceRefer;
+class TMceTransactionDataContainer;
+
+// CLASS DECLARATION
+
+/**
+*  An interface to be implemented by users of MCE if they wish to use
+*  refers.
+*
+*  This observer is set using CMceManager::SetReferObserver function.
+*
+*  @lib mceclient.lib
+*/
+class MMceReferObserver
+    {
+    public: // New functions
+        
+		/**
+        * The state of the refer has changed.
+        * @param aRefer, the refer that has changed.
+	    * @param aContainer, if present, holds details of
+	    *        transaction causing state change.
+        */
+        virtual void ReferStateChanged(
+        			CMceRefer& aRefer,
+    				TMceTransactionDataContainer* aContainer ) = 0;
+			
+	    /**
+	    * The state of the connection used by the refer has changed.
+	    * @param aRefer, the refer that has changed.
+	    * @param aActive, ETrue if connection active, EFalse if connection inactive.
+	    */
+	    virtual void ReferConnectionStateChanged(
+	                CMceRefer& aRefer,
+	                TBool aActive ) = 0;
+                
+		/**
+		* An error has occurred concerning a specific SIP refer.
+		* Note, that each error causes the event state to be ETerminated.
+		* @param aRefer, The refer raising the error.
+		* @param aError, Error code
+		*/
+		virtual void Failed(CMceRefer& aRefer, TInt aError ) = 0;
+    };
+
+#endif