/*

* Copyright (c) 2010 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: 

 *

*/

#ifndef CFILEHARVESTER_H

#define CFILEHARVESTER_H

//  INCLUDES 

#include <e32base.h>

#include "cfileplugin.h"

class CFilePlugin;

class CFileHarvester : public CActive

    {

    public:

    	enum TFileHarvesterState

    		{

    		EHarvesterIdleState,

    		EHarvesterStartHarvest,

    		EHarvesterGetFileId

    		};

        /**

        * Construction

        * @return Harvester image plugin

        */

        static CFileHarvester* NewL(CFilePlugin& aFilePlugin, RFs& aFs);

        /**

        * Destruction

        */

        virtual ~CFileHarvester();

        /**

        * Start harvesting File items

        * @param aDriveNumber drive to start harvesting

        */

        void StartL( const TDriveNumber aDriveNumber );

        /**

        * Add ignore paths

        * @param aDriveNumber drive to add the ignore paths

        */

        void AddIgnorePathsL( const TDriveNumber aDriveNumber );

        /**

        * Remove ignore paths

        * @param aDriveNumber drive to remove the paths from

        */

        void RemoveIgnorePaths( const TDriveNumber aDriveNumber );

    private:  //From CActive

	    /**

	     * From CACtive.

	     */

        void DoCancel();

        /**

	     * From CACtive.

         */

        void RunL();

        /**

	     * From CACtive.

	     * @param aError Leave code from RunL()

	     * @return Error code, KErrNone if error was handled successfully.

         */

        TInt RunError( TInt aError );

    private:

        /**

        * Private constructor

        */    

        CFileHarvester( CFilePlugin& aFilePlugin, RFs& aFs );

        /**

        * 2nd phase construction

        */    

        void ConstructL();

        /**

        * Get next messaging folder 

        */

        void GetNextFolderL();

        /**

        * Get File identifier

        */ 

        void GetFileIdL();

        /**

        * Checks if harvesting is ready or not.

        * @return ETrue, if ready.

        */

        void SetNextRequest( TFileHarvesterState aState );

        TInt AddIgnorePathL( const TFileName& aIgnorePath );

        TInt RemoveIgnorePath( const TFileName& aIgnorePath );

        TBool CheckPath( const TFileName& aFileName );

    private:

        // File plugin for observing

        CFilePlugin& iFilePlugin; 

        // File harvester state.

        TFileHarvesterState iHarvestState;

        // RFs

        RFs& iFs;

        // The drive being harvested now

        TDriveNumber iCurrentHarvestDrive;

        CDir* iDir;

        CDirScan* iDirscan;

        TInt iCurrentIndex;

        TInt iStepNumber;

        RPointerArray<TFileName> iIgnorePaths;

    };

#endif // CFILEHARVESTER_H

// End of File