/*

* Copyright (c) 2009 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:  GetParitialObject operation

*

*/

#ifndef CGETPARTIALOBJECT_H

#define CGETPARTIALOBJECT_H

#include "crequestprocessor.h"

class CMTPTypeFile;

class CMmMtpDpMetadataAccessWrapper;

class MMmMtpDpConfig;

/**

* Defines GetPartialObject request processor

*/

class CGetPartialObject : public CRequestProcessor

    {

public:

    /**

    * Two-phase construction method

    * @param aFramework   The data provider framework

    * @param aConnection  The connection from which the request comes

    * @param aWrapper     medadata access interface

    * @return a pointer to the created request processor object

    */

    IMPORT_C static MMmRequestProcessor* NewL( MMTPDataProviderFramework& aFramework,

        MMTPConnection& aConnection,

        MMmMtpDpConfig& aDpConfig );

    /**

    * Destructor

    */

    IMPORT_C virtual ~CGetPartialObject();

protected:

    /**

    * Standard c++ constructor

    * @param aFramework   The data provider framework

    * @param aConnection  The connection from which the request comes

    */

    IMPORT_C CGetPartialObject( MMTPDataProviderFramework& aFramework,

        MMTPConnection& aConnection );

protected:

    // from CRequestProcessor

    /**

    * Check the GetPartialObject reqeust

    * @return EMTPRespCodeOK if the request is good, otherwise, one of the error response codes

    */

    IMPORT_C TMTPResponseCode CheckRequestL();

    /**

    * GetPartialObject request handler

    * Send the partial object data to the initiator

    */

    IMPORT_C void ServiceL();

    /**

    * Signal to the initiator how much data has been sent

    * @return EFalse

    */

    IMPORT_C TBool DoHandleResponsePhaseL();

private:

    /**

    * Second-phase construction

    */

    void ConstructL();

private:

    //helper

    /**

    * Verify if the parameter of the request (i.e. offset) is good.

    * @return ETrue if the parameter is good, otherwise, EFalse

    */

    TBool VerifyParametersL();

    /**

    * Populate the partial data object

    */

    void BuildPartialDataL();

private:

    MMTPDataProviderFramework& iFramework;

    TUint iOffset;

    TUint iPartialDataLength;

    CMTPTypeFile* iFileObject;

    TUint32 iObjectHandle;

    };

#endif // CGETPARTIALOBJECT_H