--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wvuing/wvuieng/EngInc/MCAInviteObserver.h	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,80 @@
+/*
+* Copyright (c) 2002-2005 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:  Invitation handling interface for UI
+*
+*/
+
+#ifndef MCAINVITEOBSERVER_H
+#define MCAINVITEOBSERVER_H
+
+// INCLUDES
+#include "MCAInvitation.h"
+
+#include <e32std.h>
+
+// CLASS DECLARATION
+
+/**
+*  Invitation handling interface for UI. Receiving of invites is serialized
+*  in engine, so client will receive only one invite per time through this
+*  interface. If engine receives several invites, it will cache those invites
+*  and call appropriate methods from this interface after client has returned
+*  control from HandleInvitation.
+*
+*
+*  @lib CAEngine.lib
+*  @since 1.2
+*/
+class MCAInviteObserver
+    {
+    public:
+        enum TInviteEventType
+            {
+            ENewInvite,
+            EInviteExpired,
+            EInviteCancel,
+            EInviteRead
+            };
+
+        /**
+         * Gets called when invite event occurs.
+         * @param aEvent Type of event.
+         * @param aInvitation specifies the invitation message.
+         */
+        virtual void HandleInvitationEventL( TInviteEventType aEvent,
+                                             const MCAInvitation* aInvitation ) = 0;
+
+        /**
+         * Gets called when we received response to our invitation
+         * @since 2.1
+         * @param aAcceptance Accepted or rejected
+         * @param aUserId User Id of the response sender
+         * @param aGroupName group name
+         * @param aResponse response text
+         */
+        virtual void HandleInvitationResponse( TBool aAcceptance,
+                                               const TDesC& aUserId,
+                                               const TDesC& aGroupName,
+                                               const TDesC& aResponse ) = 0;
+    protected:
+
+        /**
+        * Destructor.
+        */
+        virtual ~MCAInviteObserver() {};
+    };
+
+#endif      // MCAINVITEOBSERVER_H
+
+// End of File