diff -r 000000000000 -r 5e5d6b214f4f imstutils/imconversationview/imcvuiengine/inc/mimcvenginechatinterface.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imstutils/imconversationview/imcvuiengine/inc/mimcvenginechatinterface.h	Tue Feb 02 10:12:18 2010 +0200
@@ -0,0 +1,164 @@
+/*
+* Copyright (c) 2007-2008 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:  chat interface 
+*
+*/
+
+
+#ifndef MIMCVENGINECHATINTERFACE_H
+#define MIMCVENGINECHATINTERFACE_H
+
+#include "mimcvenginemessagesreadinterface.h"
+
+//	FORWARD CLASS DECLERATIONS
+class MIMCVEngineMessageWriteInterface;
+class MIMCVEngineNewMsgObserver;
+class MIMCVEngineMessageReadInterface;
+class MIMCVEngineBufferMemoryHandler;
+class MIMCVEngineChatListObserver;
+
+
+/**
+ * Internal buffer ids, these must be specified so that they can't appear in
+ * wireless village ids. And they must also be non-matchable to KNullDesC when
+ * comparing with neutral compare.
+ *
+ * From WV_CSP_v1.1.pdf:
+ *   As per URI [RFC2396], certain reserved characters must be escaped if they 
+ *   occur within the User-ID, Resource,. This includes the characters 
+ *   ";", "?", ":", "&", "=", "+", "$" and ",".
+ *
+ * When using neutral compare, atleast ";", "?", ":", "&", "=", "+", "#" and "," 
+ * are invalid.
+ */
+_LIT( KSendBufferId, "$" );
+
+// CLASS DECLARATION
+
+/**
+ *  Interface for getting access to message containers.
+ *
+ *  @lib imcvengine.dll
+ *  @since 5.0
+ */
+class MIMCVEngineChatInterface
+	{	    	
+	public: // Interface
+	
+		/**
+		 * Provide access to chat messages. If messageContainer does not exists
+		 * creates one. 
+		 * @param aServiceId Part of identifier to identify container.
+		 * @param aTargetId Part of identifier to identify container.		 
+		 * @param aType. Preferred type of container. If ENoneContainer, 
+		 *               resolved by container.
+		 * @return Read interface to container
+		 */
+		virtual MIMCVEngineMessageReadInterface& MessageReadInterfaceL(
+            TInt aServiceId, 
+            const TDesC& aTargetId = KSendBufferId,
+            const TDesC& aDisplayName = KNullDesC ,
+            const TDesC8& aContactLink = KNullDesC8,
+            MIMCVEngineMessageReadInterface::TContainerType aType = MIMCVEngineMessageReadInterface::ENoneContainer
+            ) = 0;
+
+		/**
+		 * Provide access to append chat messages. 
+		 * If messageContainer does not exists, creates one. 
+		 * @param aServiceId Part of identifier to identify container.
+		 * @param aTargetId Part of identifier to identify container.		 
+		 * @param aType. Preferred type of container. If ENoneContainer, 
+		 *               resolved by container.		 
+		 * @return Write interface to container
+		 */
+		virtual MIMCVEngineMessageWriteInterface& MessageWriteInterfaceL(
+            TInt aServiceId, 
+            const TDesC& aTargetId = KSendBufferId,
+            const TDesC& aDisplayName = KNullDesC ,
+            const TDesC8& aContactLink = KNullDesC8 ,
+            MIMCVEngineMessageReadInterface::TContainerType aType = 
+                        MIMCVEngineMessageReadInterface::ENoneContainer ) = 0;
+		
+                    
+        /**
+         * Delete identified chat container		 
+		 * @param aServiceId Part of identifier to identify container.
+		 * @param aTargetId Part of identifier to identify container.		 
+         */		
+		virtual void DeleteChatL( TInt aServiceId,
+		                          const TDesC& aTargetId = KSendBufferId ) = 0;
+		                          
+
+			
+		/**
+		 * @see MIMCVEngineNewMsgObserver
+		 */ 
+		virtual TInt ChatCount() const = 0 ;
+		
+        /**
+         * Close all open containers.
+         */
+        virtual void CloseAllContainers() = 0;
+        
+        
+        /**
+         * Returns the Memory Handler
+         * @return Reference to MIMCVEngineBufferMemoryHandler
+         */
+        virtual MIMCVEngineBufferMemoryHandler& MemoryHandler() = 0;
+        
+        /**
+		 * Register observer for chat events. Remember to unregister 
+		 * when not needed
+		 * @param aObserver Observer which is registered.
+		 * @return KErrNone if succeed.
+		 */
+		virtual void RegisterNewMsgObserver( MIMCVEngineNewMsgObserver* aObserver ) = 0;
+
+		/**
+		 * Unregister observer for chat events.
+		 * @param aObserver Observer which is unregistered
+		 * @return KErrNone if found and unregistered.
+		 */
+		virtual void UnregisterNewMsgObserver() = 0;
+
+		
+		/**
+		 * Register observer for conversations added/deleted events. Remember to unregister 
+		 * when not needed
+		 * @param aObserver Observer which is registered.
+		 * @return KErrNone if succeed.
+		 */
+		virtual TInt RegisterChatListObserver( MIMCVEngineChatListObserver* aObserver ) = 0;
+
+		/**
+		 * Unregister observer for conversations added/deleted.
+		 * @param aObserver Observer which is unregistered
+		 * @return KErrNone if found and unregistered.
+		 */
+		virtual TInt UnregisterChatListObserver( MIMCVEngineChatListObserver* aObserver ) = 0;
+			                     
+        	/**
+		 * @see MIMCVEngineChatInterface
+		 */ 
+		virtual ~MIMCVEngineChatInterface()
+			{
+				
+			};
+
+	};
+
+#endif      // MIMCVENGINECHATINTERFACE_H
+
+// End of File