--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmsharing/mmshavailability/inc/mmusavacapabilityqueryobserver.h	Thu Dec 17 08:44:37 2009 +0200
@@ -0,0 +1,74 @@
+/*
+* Copyright (c) 2005-2007 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:  Capability query observer 
+*
+*/
+
+#ifndef MMUSAVACAPABILITYQUERYOBSERVER_H
+#define MMUSAVACAPABILITYQUERYOBSERVER_H
+
+#include <sipstrconsts.h>
+#include <bamdesca.h>
+
+class CMusAvaCapabilityQueryBase;
+
+
+
+/**
+ * Capability Query Observer
+ *
+ * @lib musavailabilityplugin.lib
+ */
+class MMusAvaCapabilityQueryObserver
+    {
+public: 
+
+    virtual void CapabilitiesResolved( const CMusAvaCapabilityQueryBase& aSentQuery ) = 0;
+    
+    virtual void CapabilitiesResolvedL( const TDesC& aUri ) = 0;
+    
+    virtual void SetCapabilitiesResolvedForCingular() = 0;
+    
+    virtual TBool CapabilitiesResolvedForCingular() = 0;
+
+    /**
+     * This is to advertise MMusAvaCapabilityQueryObserver implementors
+     * about sip header change. It is mainly used in below scneraio but could
+     * be used in future if anyother sip headers has to be set.
+     * 
+     * Incase if we receive OPTIONS request already and 
+     * P-Asserted-Identity Header is present then OPTIONS
+     * request should be sent to this ID. This function should be
+     * called to configure this id in CMusAvaSettingsImp& iSettings
+     *
+     * @aHeaders Array of SIP Headers.    
+     * @aHeaderType Type of the header.
+     * Leavs if Array is empty or pointer is NULL.
+     * Ownership Transferred.
+     */
+    virtual void SipHeadersL(const MDesCArray& aHeaders,
+                          SipStrConsts::TStrings aHeaderType)=0;
+    
+    /**
+     * Advertise about video codec capabilities     
+     */
+    virtual void VideoCodecsResolvedL( const MDesCArray& aVideoCodecs ) = 0;
+    
+    virtual TBool CapabilityQueryAnswered( TBool aAnswered = EFalse ) = 0;
+    
+    };
+
+
+#endif //MMUSAVACAPABILITYQUERYOBSERVER_H
+