/*

* Copyright (c) 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:      Metadata Harvester server's client header

*

*/

#ifndef CMMDHCLIENT_H

#define CMMDHCLIENT_H

//  INCLUDES

#include    <e32base.h>

#include    "mdhclientsession.h"

#include    "mmdhclient.h"

// FORWARD DECLARATION

class RCmMdhSession;

class MCmServiceObserver;

// CLASS DECLARATION

/**

*  Metadata Harvester client

*

*  @lib cmmdhclient.lib

*  @since S60 3.1

*/

class CCmMdhClient : public CActive,

                     public MCmMdhClient

    {

    public:

        enum TCmMdhClientState  

            {

            ECmMdhClientIdle = 0,

            ECmMdhClientSearching,

            ECmMdhClientHarvesting

            };

    public:

        /**

        * Two-phased constructor.

        */

        static CCmMdhClient* NewL( MCmServiceObserver& aServer );

        /**

        * Two-phased constructor.

        */       

        static CCmMdhClient* NewLC( MCmServiceObserver& aServer );

        /**

        * Destructor

        */            

        virtual ~CCmMdhClient();

    public:

        /**

        * Starts harvesting

        * @since S60 3.1

        * @return Error code

        */        

        TInt Harvest();

        /**

        * Cancels request

        * @since S60 3.1

        * @return Error code

        */        

        void Stop();

    /**

     * Deletes the object

     * @since S60 3.1

     */

		void Close();

    private:

        /**

         * From CActive

         * Callback function.

         * Invoked to handle responses from the server.

         */

        void RunL();

        /**

         * From CActive

         * Cancels any outstanding operation.

         */

        void DoCancel();

    private:

        /**

        * Default constructor

        */        

        CCmMdhClient( MCmServiceObserver& aServer );

        /**

        * ConstructL

        */        

        void ConstructL( );

    private:

        /** Instance of mdh session */

        RCmMdhSession iMdhSession;

        /** Observer */

        MCmServiceObserver& iServer;

        /** State of the client */

        TCmMdhClientState iState;

    };

#endif      // CMMDHCLIENT_H

// End of File