/*

* Copyright (c) 2002 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:  MsgAttachmentModelObserver  declaration

*

*/

#ifndef INC_MSGATTACHMENTMODELOBSERVER_H

#define INC_MSGATTACHMENTMODELOBSERVER_H

// ========== INCLUDE FILES ================================

#include <f32file.h>

#include <cmsvattachment.h>

// ========== CONSTANTS ====================================

// ========== MACROS =======================================

// ========== DATA TYPES ===================================

// ========== FUNCTION PROTOTYPES ==========================

// ========== FORWARD DECLARATIONS =========================

class CMsgAttachmentInfo;

// ========== CLASS DECLARATION ============================

/**

 * Attachment model observer.

 *

 */

class MMsgAttachmentModelObserver

    {

    public:

        enum TMsgAttachmentCommand

            {

            EMsgAttachmentAdded = 0,

            EMsgAttachmentRemoved

            };

    public:

        /**

        * This function that is called when attachment model adds or removes

        * attachments from its list.

        * @param aCommand

        * @param aAttachmentInfo

        */

        virtual void NotifyChanges( TMsgAttachmentCommand aCommand, CMsgAttachmentInfo* aAttachmentInfo ) = 0;

        /**

        * This function that is called when attachment model needs to

        * get access to an attachment file

        * @param aId    Attachment id

        * @return       Open (read-only) file handle

        */

        virtual RFile GetAttachmentFileL( TMsvAttachmentId aId ) = 0;

    };

#endif

// End of File