/*

* Copyright (c) 1999-2009 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 __PARSELST_H__

#define __PARSELST_H__

#include <e32std.h>

#include <mparser.h>

#include <txtrich.h>

//++ sort out definitive hash includes

NONSHARABLE_CLASS(CParserList) : public CBase

/**

@internalComponent

*/

	{

	enum TParserTagValues

		{

		EReformatOnRecogniseFlag = (TInt)0x80000000,

		EReformatOnRolloverFlag = 0x40000000,

		EDefaultParserFlag = 0x20000000,

		EParserTagMask = 0x3FFFFFFF,

		EMaxParserIndex = 0x1FFFFFFF

		};

	enum TParserListPanic

		{

		EParserNoneActive,

		EParserNullPtr,

		EParserInstanceNotActive,

		EParserNoSuchTag,

		EParserIgnoringAllowFlag,

		EParserIndexRollover

		};

private:

	class CParserItem : public CBase

		{

	public:

		CParserItem(MParser* aParser, const TUint aTagIndex);

		~CParserItem() {}

		inline MParser* Parser() const {return iParser;}

		inline TUint TagIndex() const {return iTagIndex;}

	private:

		MParser* iParser;

		TUint iTagIndex;

		};

public:

	CParserList();

	~CParserList();

	void ActivateParserL(MParser* aParser);

	void DeactivateParser(MParser* aParser);

	void ActivateDefaultParserL(MParser* aParser);

	void DeactivateParserDefaults();

	TBool ParseThisText(CRichText& aTextObj,TInt aStartScan,TInt aScanLength,TInt& aStartOfTags,TInt& aLength);

	MParser* ParserWithThisTag(const TUint aTagIndex) const;

	TUint TagForThisParser(const MParser *const aParser) const;

	static inline TBool ReformatOnRollover(const TUint aTagIndex) {return (aTagIndex & EReformatOnRolloverFlag);}

private:

	static inline TBool ReformatOnRecognise(const TUint aTagIndex) {return (aTagIndex & static_cast<TUint>( EReformatOnRecogniseFlag ) );}

	static inline TBool DefaultParser(const TUint aTagIndex) {return (aTagIndex & EDefaultParserFlag);}

	static inline TUint MaskedTag(const TUint32 aTagIndex) {return (aTagIndex & EParserTagMask);}

	void ActivateAParserL(MParser* aParser, const TBool aDefaultParser);

	TBool LoopOneParser(MParser* aParser, const TUint aTagIndex, CRichText& aTextObj,

						const TInt aStartScan, const TInt aScanLength,

						TInt& aStartOfTags, TInt& aLength);

	void Panic(TParserListPanic aPanic) const;

private:

	RPointerArray<CParserItem> iParserList;	// List of active parsers (specific and default)

	TUint iHighestIndex;

public:

	TInt iNumberInList;

	TInt iRefCount;

	};

NONSHARABLE_CLASS(CParserData) : public CBase

/**

@internalComponent

*/

	{

public:

	CParserData(TInt aEndParse);

	~CParserData();

	TBool HaveRange() const { return iStartParse != -1; }

	void MergeRange(TInt aStart,TInt aOldLength,TInt aNewLength);

	void KillRange() { iStartParse = -1; }

	TInt StartParse() const { return iStartParse; }

	TInt EndParse() const { return iEndParse; }

	CParserList* iActiveParserList;	// local copy because access to Dll::Tls is slow

	MEditObserver* iEditObserver;

	TInt iLastKnownCursor;

private:

	TInt iStartParse;				// start of text to be parsed; -1 means none

	TInt iEndParse;					// end of text to be parsed

	};

#endif