/*

* 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:  Handles messaging between file system and haptics 

*                client interface.

*

*/

#ifndef C_HAPTICSMSGHANDLER_H

#define C_HAPTICSMSGHANDLER_H

#include <e32base.h>

#include <e32debug.h>

#include <f32file.h>

#include "hapticsbridgeclient.h"

class CHapticsConnTimer;

/**

 * Interface to notify about connection timeout.

 */

class MHapticsConnectionShutdown

    {

    public:

        /**

         * Called to notify about connection timeout.

         */

        virtual void NotifyShutdown() = 0;

    };

/**

 * Helper class for Bridge functionality for handling RFs (File Session)

 * change notifications for VibeTonz request file.

 *

 * @since S60 5.1

 */

class CHapticsMsgHandler : public CActive,

                           public MHapticsConnectionShutdown

    {        

public:    

    /**

     * 2-phased constructor.

     */

    static CHapticsMsgHandler* NewL();

    /**

     * Destructor

     */

    virtual ~CHapticsMsgHandler();

    /**

     * Method for starting the listening for change notifications    

     */

    void StartNotifier();

    /**

     * From MHapticsConnectionShutdown.

     * Called to notify about connection timeout.

     */        

    void NotifyShutdown();   

protected: // From CActive.    

    /**

     * @see CActive

     */

    void RunL();

    /**

     * @see CActive

     */    

    TInt RunError(TInt aError);

    /**

     * @see CActive

     */    

    void DoCancel();

private:

    /**

     * Constructor

     */

    CHapticsMsgHandler();

    /**

     * Two-phase construction ConstructL

     */

    void ConstructL();

    /**

     * Method for connecting to file system. Also sets the paths and

     * creates directories (if not already exists).

     */

    void ConnectToFilesystemL();            	

    /**

     * Helper for clearing the possible left-over request file from

     * previous runs.

     */

    void ClearRequestFile();

private: // data

    /**

     * File server session through which all file server related 

     * services are requested.

     */

    RFs iFs;

    /**

     * Buffer for the request file data

     */

    HBufC8* iReqBuf;    

    /**

     * The RHapticsBridgeClient object that is responsible for further

     * handling of received Bridge commands

     */

    RHapticsBridgeClient iClient;

    CHapticsConnTimer* iConnectionTimeout;

  };

#endif // C_HAPTICSMSGHANDLER_H