// Copyright (c) 1997-2009 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:

// Comms IO Mixin

// 

//

/**

 @file

 @internalAll 

*/

#ifndef __SCOMM_H__

#define __SCOMM_H__

#include <c32comm.h>

class CCommWriter;

class CCommReader;

class MComm

/**

@internalComponent

*/

	{

protected:

	MComm();

	virtual ~MComm();

	void CommConstructL(TInt aReadPriority, TInt aWritePriority);

	 TInt CommOpen(const TDesC& aName, TCommAccess aAccess);

	 TInt CommOpen(const TDesC& aDll, const TDesC& aName, TCommAccess aAccess);

	 void CommClose();

	 void CommCancel();

	 void CommWrite(const TDesC8& aDes);

	 void CommWriteReady();

	 void CommWriteCancel();

	 void CommRead(TDes8& aDes);

	 void CommReadOneOrMore(TDes8& aDes);

	 void CommReadReady();

	 void CommReadCancel();

	virtual void CommReadComplete(TInt aStatus)=0;

	virtual void CommWriteComplete(TInt aStatus)=0;

protected:

	friend class CCommWriter;

	friend class CCommReader;

	RCommServ iCommServer;

	RComm iCommPort;

	CCommReader* iCommReader;

	CCommWriter* iCommWriter;

	TBuf8<1> iBuf;

	};

class CCommReader : public CActive

/**

@internalComponent

*/

	{

public:

	CCommReader(MComm* aComm, TInt aPriority);

	virtual ~CCommReader();

	inline void Activate() { SetActive(); }

	inline TRequestStatus& StatusRef() { return iStatus; }

protected:

	virtual void RunL();

	virtual void DoCancel();

private:

	MComm *iComm;

	};

class CCommWriter : public CActive

/**

@internalComponent

*/

	{

public:

	CCommWriter(MComm* aComm, TInt aPriority);

	virtual ~CCommWriter();

	inline void Activate() { SetActive(); }

	inline TRequestStatus& StatusRef() { return iStatus; }

protected:

	virtual void RunL();

	virtual void DoCancel();

private:

	MComm *iComm;

	};

#endif