--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailservices/psmruadapter/inc/CPsMruAdapter.h	Thu Dec 17 08:39:21 2009 +0200
@@ -0,0 +1,188 @@
+/*
+* Copyright (c) 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:  Predictive Search MRU ADapter 
+*
+*/
+
+
+#ifndef C_PS_MRU_ADAPTER_H
+#define C_PS_MRU_ADAPTER_H
+
+// INCLUDES
+#include <CPsDataPlugin.h>
+//<cmail>
+#include "MFSMailEventObserver.h"
+//</cmail>
+
+// FORWARD DECLARATION
+class CPsData;
+class CFSMailClient;
+
+// CLASS DECLARATION
+
+/**
+* MRU Data Store
+* This class acts as a MRU Data store, which allows access to 
+* FS Email Framework MRU data 
+* 
+* @since S60 v3.2
+*/
+class CPsMruAdapter : public CPsDataPlugin, public MFSMailEventObserver
+	{
+	public: 
+	
+	    /**
+	     * Two phase construction
+	     */
+	    static CPsMruAdapter* NewL(TAny* aPsDataPluginParameters);
+
+	    /**
+	     * Destructor
+	     */
+	    virtual ~CPsMruAdapter();
+
+	    /**
+	     * Returns the additional data for given item id
+	     * Returns NULL (in current implementation)
+	     */
+	    TAny* RequestForDataExtensionL( TInt ItemId );
+
+// from base class CPsDataPlugin
+
+        /**
+         * Requests for data from this store
+         * The adapters need to pass an instance of the observer. The data 
+         * to the algorithm is provided via the observer callback 
+         */
+        void  RequestForDataL( TDesC& aDataStoreURI );      
+
+        /**
+         * Gets the supported data stores URIs
+         * 
+         * @param aDataStores supported data stores URIs
+         */  
+        void GetSupportedDataStoresL( RPointerArray<TDesC>& aDataStoresURIs );
+
+        /**
+         * Checks if the given data store is supported.
+         * 
+         * @param aDataStoreURI data store
+         * @return True if this store is supported        
+         */  
+        TBool IsDataStoresSupportedL( TDesC& aDataStoreURI ) ;
+
+        /**
+         * Gets the supported data fields for specific stores URIs
+         * 
+         * @param aDataFields supported data fields for aStoreURI         
+         */ 
+        void GetSupportedDataFieldsL( RArray<TInt>& aDataFields );
+
+// from base class MFSMailEventObserver
+
+        /**
+         * Handles mailbox events from plugins.
+         */
+        void EventL( TFSMailEvent aEvent, TFSMailMsgId aMailbox, 
+            TAny* aParam1, TAny* aParam2, TAny* aParam3 );
+
+	private:
+
+	    /**
+	     * Constructor
+	     */
+		CPsMruAdapter();
+
+		/**
+		 * 2nd phase construtor
+		 */
+		void ConstructL(MDataStoreObserver* aObserverForDataStore,
+		    MStoreListObserver* aStoreListObserver);
+
+		/**
+		 * Updates given data store
+		 */  	    
+		TBool FillDataStoreL( TDesC& aDataStoreURI );
+
+		/**
+		 * Updates given data store
+		 */  	    	    
+		TBool FillDataStoreL( TFSMailMsgId& aId );
+
+		/**
+		 * Updates a list of supported data stores
+		 */  	    
+		void UpdateSupportedDataStoresList();	    
+
+		/**
+		 * Starts observing mailbox
+		 */
+		TBool AddMailboxObserverL( TFSMailMsgId& aId );
+		
+		/**
+		 * Stops observing mailbox
+		 */
+	    TBool RemoveMailboxObserver( TFSMailMsgId& aId );
+	    
+		/**
+		 * Stops all mailbox observers
+		 */
+	    void RemoveAllMailboxObservers();
+		
+		/**
+		 * Converts Uri to TFsMailMsgId
+		 */
+		TBool GetMailboxIdentifierFromUri( TDesC& aUri, TFSMailMsgId& aId );
+
+		/**
+		 * Converts TFsMailMsgId to Uri
+		 */
+	    TBool GetUriFromMailboxIdentifier( TFSMailMsgId& aId, HBufC& aUri );
+	    
+		/**
+	    * Updates given data store
+	    */  	    	    
+	    TBool FillDataStoreL( TFSMailMsgId& aId, TDesC& aDataStoreURI );	    
+
+    private: // data
+
+		/**
+		 * Holds the observer object to communicate add/modify/delete of contacts
+		 * Not owned.
+		 */
+		MDataStoreObserver* iDataStoreObserver;
+		
+		/**
+	    * An observer instance used to send the datastore to the adapter
+	    */
+		MStoreListObserver* iStoreListObserver;		
+			
+		/**
+        * Supported Uris(data stores)
+        */
+    	RPointerArray<HBufC> iSupportedUris;	
+    	
+    	/**
+    	 * List of mailboxes currently being observed
+    	 */
+    	RArray<TFSMailMsgId> iObservedMailboxes;
+    	
+		/**
+        * Fs Email framework client
+        */
+	    CFSMailClient* iMailClient;
+	};
+	
+
+#endif // C_PS_MRU_ADAPTER_H