/*

* Copyright (c) 2006-2009 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: 

*

*/

#ifndef __TMREFORMAT_H__

#define __TMREFORMAT_H__

#include <e32base.h>

#include "TmLayoutImp.h"

#include "TMINTERP.H"

#include "TMSTD.H"

class CTmTextLayout;

class TTmReformatParam;

class TBidirectionalContext;

class TTmFormatParamBase;

class TTmReformatParam;

NONSHARABLE_CLASS(CTmReformat) : public CBase

	{

public:

	static CTmReformat* NewLC(CTmTextLayout& aTextLayout, const TTmFormatParamBase& aFormatParam, 

		const TTmReformatParam& aReformatParam);

	~CTmReformat();

	void ReformatL();

	CTmCode& NewCode();

	const CTmFormatContext::TInfo& FormatInfo() const;

	const TTmByteCodeFinder::TInfo& ReformatRange() const;

	TBool BidirectionalStateChanged();

	const TBidirectionalContext& BidirectionalStateAtEnd() const;

private:

	CTmReformat(CTmTextLayout& aTextLayout,  const TTmFormatParamBase& aFormatParam, 

		const TTmReformatParam& aReformatParam);

	void ConstructL();

//helper functions for ReformatL

	void GetReformatRangeL(TBool aToParagraphStart, TBool aToParagraphEnd);

	void GenerateNewCodeL(TBool aToParagraphStart, TBool aToParagraphEnd);

//query functions for ReformatL

	TBool ReformatRangeExtendsToParagraphStart() const;

	TBool ReformatRangeExtendsToParagraphEnd() const;

	TBool BidirectionalityChangedAtStart();

	TBool BidirectionalityChangedAtEnd();

	TBool LineEndingsChangedAtEnd() const;

//input	

	CTmTextLayout& iTextLayout;

	const TTmFormatParamBase& iFormatParam;

	const TTmReformatParam& iReformatParam;

//temporary state

	TBidirectionalContext* iOldStartBDContext;

	TBidirectionalContext* iOldEndBDContext;

	TBidirectionalContext* iNewEndBDContext;

	TBidirectionalEndOfLineContext iEndOfPreviousLine;

//output

	CTmCode* iNewCode;	

	CTmFormatContext::TInfo iFormatInfo;

	TTmByteCodeFinder::TInfo iReformatRange;

	TBool iBidirectionalStateChanged;

	};

#endif