/*

* 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:  email list iterator

*

*/

#ifndef MFSMAILITERATOR_H

#define MFSMAILITERATOR_H

//  INCLUDES

//<cmail>

#include "cfsmailmessage.h"

//</cmail>

/**

 *  Email framework list iterator. First call should contain NULL id as begin id :

 *  eg. NextL(TFSMailId(), count, messages);

 *

 *  @lib FSFWCommonLib

 *  @since S60 v3.1

 */

class MFSMailIterator

    {

public:

    /**

     * Lists user given count of email objects located after user

     * given start point.

     *

     * @param aCurrentMessageId start point is id of the first message

     *        to be listed

     * @param aCount email object count to be listed

     * @param aMessages user given and owned table where plugin stores

     *        email objects

     *

     * @return true if more email objects follows after listed objects

     */

     virtual TBool NextL( TFSMailMsgId aCurrentMessageId, 

                           TUint aCount, 

                           RPointerArray<CFSMailMessage>& aMessages) = 0;

    /**

      * Lists user given count of email objects located after user

      * given start point.

     *

      * @param aStartWith start point is user given string to match

      * @param aCount email object count to be listed

      * @param aMessages user given and owned table where

      *        plugin stores email objects

     *

      * @return true if more email objects follows after listed objects

     */

     virtual TBool NextL( const TDesC&  aStartWith, 

                           TUint aCount, 

                           RPointerArray<CFSMailMessage>& aMessages) = 0;

    /**

      * Lists user given count of email objects located before user

      * given point.

     *

      * @param aCurrentMessageId end pointer is id of the last message

      *        to be listed

      * @param aCount email object count to be listed

      * @param aMessages user given and owned table where plugin stores

      *        email objects

     *

      * @return true if more email objects exists before listed objects

     */

     virtual TBool PreviousL( TFSMailMsgId aCurrentMessageId, 

                               TUint aCount, 

                               RPointerArray<CFSMailMessage>& aMessages) = 0;

    /**

      * Lists user given count of email objects located before user

      * given point.

     *

      * @param aStartWith end point is user given string to match

      * @param aCount email object count to be listed

      * @param aMessages user given and owned table where plugin stores email

      *        objects

     *

      * @return true if more email objects exists before listed objects

     */

     virtual TBool PreviousL( const TDesC&  aStartWith, 

                              TUint aCount, 

                              RPointerArray<CFSMailMessage>& aMessages) = 0;

    /**

     * Destructor.

     */  

   	 virtual ~MFSMailIterator() { }; 

   	};

#endif  // MFSMAILITERATOR_H

// End of File