/*

* 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:  Delete object operation

*

*/

#ifndef CDELETEOBJECT_H

#define CDELETEOBJECT_H

#include <d32dbms.h>

#include "crequestprocessor.h"

//forward declaration

class MMmMtpDpConfig;

/**

* Defines DeleteObject request processor

*/

class CDeleteObject : 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 ~CDeleteObject();

private:

    /**

    * Standard c++ constructor

    * @param aFramework    The data provider framework

    * @param aConnection    The connection from which the request comes

    * @param aWrapper    medadata access interface

    */

    CDeleteObject( MMTPDataProviderFramework& aFramework,

        MMTPConnection& aConnection,

        MMmMtpDpConfig& aDpConfig );

protected:

    //from CRequestProcessor

    /**

    * DeleteObject request handler

    */

    IMPORT_C void ServiceL();

    //from CActive

    /**

    * AO Run method, deletes a selection of files on the system

    */

    IMPORT_C void RunL();

    /**

    * Used to cancel the deletion of the files

    */

    IMPORT_C void DoCancel();

private:

    void ConstructL();

    /**

    * Control the deletion

    */

    void StartL();

    /**

    * Delete all child objects of an association recursively.

    */

    void DeleteAllChildrenL();

    /**

    * Delete all of the associations if file deletion was successful

    * Then signals that the deletion has been completed

    */

    void ProcessFinalPhaseL();

    /**

    * Gets all object handles (for GetObjectHandlesL)

    */

    void GetObjectHandlesL( TUint32 aStorageId, TUint32 aParentHandle );

    /**

    * Deletes an object from the file system and the object store

    */

    void DeleteObjectL( const CMTPObjectMetaData& aObjectInfo );

private:

    //  Array of all the objects to delete

    RArray<TUint> iObjectsToDelete;

    // Keeps track of any errors that occur

    TInt iDeleteError;

    // Keeps track of whether any files where deleted

    TBool iIsMultiDelete;

    // Accessor of DB

    MMmMtpDpConfig& iDpConfig;

    };

#endif // CDELETEOBJECT_H