usbengines/usbdevcon/inc/cep0writer.h
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/*
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* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  State, while waiting for requests
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*
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*/
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#ifndef CEP0WRITER_H
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#define CEP0WRITER_H
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#include "cusbdevcon.h"
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class CStateMachine;    // gets notifications on events happened on EP0
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/**
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 *  EP0 Writer
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 *
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 *  @lib usbdevcon.lib
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 *  @since S60 v.5.0 
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 */
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class CEP0Writer : public CActive 
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    {
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public:
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    /**
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     * Two-phased constructor.
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     *
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     * @since S60 v.5.0
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     * @param aObserver Gets notification when Read request is completed
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     * @param aLdd Link to services for reading EP0
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     * @return Constructed instance
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     */
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    static CEP0Writer* NewL(CStateMachine& aObserver, RDevUsbcClient& aLdd);
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    /**
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    * Destructor.
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    *
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    * @since S60 v.5.0
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    */
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    virtual ~CEP0Writer();
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    /**
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     * Set request to write EP0 data
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     *
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     * @since S60 v.5.0
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     * @param aBuffer Data to write
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     * @param aDataLength Max length of data to write
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     */
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    void Write(const RBuf8& aBuffer, TUint aDataLength);
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private:
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    /**
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     * Default construction
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     *
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     * @since S60 v.5.0
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     * @param aObserver Gets notification when Read request is completed
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     * @param aLdd Link to services for writing EP0
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     */
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    CEP0Writer(CStateMachine& aObserver, RDevUsbcClient& aLdd);
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    /**
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     * Two-phased construction.
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     *
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     */
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    void ConstructL();
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    // from CActive
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    /**
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     * From CActive.
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     *
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     */
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    void RunL();
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    /**
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     * From CActive.
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     *
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     */ 
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    void DoCancel();
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     /**
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     * From CActive.
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     *
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     */ 
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     TInt RunError( TInt /*aError*/ );
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private: // data
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    /**
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     * Gets notifications
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     * Not own.  
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     */
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    CStateMachine& iObserver;
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    /**
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     * LDD
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     * Not own.  
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     */
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    RDevUsbcClient& iLdd;
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    /**
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     * Write data
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     * 
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     */
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    RBuf8 iBuffer;
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    };
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#endif // CEP0WRITER_H