/*

* 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:  Client interface to haptics server for haptics bridge 

*                commands.

*

*/

#ifndef C_HAPTICSBRIDGECLIENT_H

#define C_HAPTICSBRIDGECLIENT_H

#include <e32base.h>

class CHWRMHapticsPacketizer;

class RHapticsBridgeClient : public RSessionBase

{

public:

    /**

     * Constructor

     */

     RHapticsBridgeClient();

     /**

      * Destructor

      */

     virtual ~RHapticsBridgeClient();

public:

    /**

     * Create a connection to haptics server.

     */

	TInt Connect();

    /**

     * Close the connection to haptics server.

     */

	void Close();

    /**

     * Send message to haptics server.

     * @param aReqData     Data request to be sent to haptics server.

     * @param aRetDataPckg Returned data from haptics server.

     * @return KErrNone if sent succesfully, otherwise system wide error code.

     */

	TInt SendBridgeBuffer( const TDesC8& aReqData, TDes8& aRetDataPckg );

    /**

     * Sends a message clean-up commend to haptics server.

     */

	void CleanUp();

private:

    /**

     * Returns the version of the haptics server.

     * @return Version.

     */

	TVersion ServerVersion() const;

    /**

     * Starts the server process if it is not already running.

     * @return KErrNone on success, otherwise a system error code.

     */

	TInt StartServer() const;

    /**

     * Handles the device opening request.

     * @param aResponse Reference to a descriptor containing the response

     *                  received from haptics server.

     */

	void HandleOpenDeviceResponseL( const TDesC8& aResponse );

	/**

	 * Opens the haptic effect ("vibra") device.

	 * @return KErrNone on success, otherwise a system error code.

	 */

    TInt OpenHapticsDevice();

private:

    /**

     * Haptic packetizer.

     * Owned.

     */

    CHWRMHapticsPacketizer* iPacketizer;     

};

#endif // C_HAPTICSBRIDGECLIENT_H