// 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:

//

#if !defined(__CHAT_H__)

#define __CHAT_H__

#ifndef	_NOECONS

#define	_NOECONS

#endif

#include <e32base.h>

class CCommChatString;

class MCommChatNotify

/**

@internalComponent

*/

	{

public:

	virtual void ChatStringMatch(CCommChatString* aString)=0;

	virtual void ChatTimeout()=0;

	};

class CCommChatter : public CTimer

/**

@internalComponent

*/

	{

public:

	CCommChatter(MCommChatNotify* aNotify, TInt aPriority);

	virtual ~CCommChatter();	

	void CreateL(TInt aBufferSize);

	TBool Match(const CCommChatString* aString) const;

	TBool MatchF(const CCommChatString* aString) const;

	void AddChar(TText8 aChar);

	void ClearHistory();

	void AddString(CCommChatString* aString);

	void RemoveString(CCommChatString* aString);

	void StartTimer(TTimeIntervalMicroSeconds32 aTimeout);

	void StopTimer();

	void DeleteAllAndStop();

protected:

	virtual void RunL();

protected:

	MCommChatNotify* iNotify;

	TDblQue<CCommChatString> iList;

	TText8* iBuffer;

	TText8* iBufferEnd;

	TText8* iLastChar;	// Last character added

	TInt iCount;		// No of chars added to buffer

	};

class CCommChatString : public CBase

/**

@internalComponent

*/

	{

public:

	static CCommChatString* NewL(const TDesC8& aDes, TBool aIsFolded);

	CCommChatString();

	virtual ~CCommChatString();

	void CreateL(const TDesC8& aDes, TBool aIsFolded);

	inline TText8 LastChar() const { return *iLastChar; }

	inline TInt Length() const { return (iLastChar-iString)+1; }

	inline const TText8* Ptr() const { return iString; }

	inline const TText8* EndPtr() const { return iLastChar; }

	inline TBool IsFolded() const { return iIsFolded; }

	inline TPtrC8 Des() { return TPtrC8(Ptr(), Length()); }

protected:

	TBool iIsFolded;

	TText8* iString;

	TText8* iLastChar;

private:

	friend class CCommChatter;

	TDblQueLink iLink;

	};

#endif