/*

* Copyright (c) 2002-2007 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:  State machine -based operation for restoring sinle attachment.

*

*/

#ifndef CMSGMAILRESTOREATTAOP_H

#define CMSGMAILRESTOREATTAOP_H

//  INCLUDES

#include "cmsgmailbaseop.h"

#include <msvapi.h>

// DATA TYPES

// FORWARD DECLARATIONS

class MsgMailDRMHandler;

class MMsvAttachmentManager;

// CLASS DECLARATION

/**

* State machine -based operation for restoring sinle attachment.

* This class is used by it's parent CMsgMailRestoreAttaOp.

* This operation modifies the attachment model as necessary.

*/

NONSHARABLE_CLASS( CMsgMailRestoreAttaOp ) : public CMsgMailBaseOp

    {

    protected:

        enum TLaunchState

            {

            ECheckAttaMime = EFirstFreeState, // check & update mime type

            ECheckAttaDRM, // check DRM status

            EFinalize // finalize operation

            };

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        * @aIndex attachment's index

        * @param aDocument Editor's document

        */

        static CMsgMailRestoreAttaOp* NewL(

            TInt aIndex,

            CMsgMailEditorDocument& aDocument );

        /**

        * Destructor. Cancels operation.

        */

        ~CMsgMailRestoreAttaOp();

    protected: // from CMsgMailBaseOp

        void SetNextState();

        void HandleStateActionL();

        void HandleOperationCancel();

    private:  // Implementation

        void CheckAttaMimeL();

        void CheckAttaDRML();

        void Finalize();

    private:

        /**

        * Constructor.

        * @aIndex attachment's index

        * @param aDocument Editor's document        

        */

        CMsgMailRestoreAttaOp( TInt aIndex,

                               CMsgMailEditorDocument& aDocument );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

    private:

        // Boolean which tells if DRM check noticed that attachment is

        // forward locked and thereby removed from attachment list

        TBool iIsFLAtta;

        // Index of this attachment

        TInt iIndex;

        // Attachment manager, not own

        MMsvAttachmentManager* iManager;    

        // DRM handler, own

        MsgMailDRMHandler* iDrmHandler;

    };

#endif      // CMSGMAILRESTOREATTAOP_H

// End of File