/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: cellfml.hxx,v $
 * $Revision: 1.8 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#ifndef _CELLFML_HXX
#define _CELLFML_HXX

#ifndef _STRING_HXX //autogen
#include <tools/string.hxx>
#endif
namespace binfilter {

class SwTable;
class SwNode;
class SwTableSortBoxes;
class SwSelBoxes;
class SwCalc;
class SwTableBox;
class SwTableFmlUpdate;

class SwTblCalcPara
{
	const SwTableBox* pLastTblBox;
	USHORT nStackCnt, nMaxSize;

public:
	SwTableSortBoxes *pBoxStk;	// Stack fuers erkennen von Rekursionen !
	SwCalc& rCalc;				// akt. Calculator
	const SwTable* pTbl;        // akt. Tabelle

	SwTblCalcPara( SwCalc& rCalculator, const SwTable& rTable );
	~SwTblCalcPara();

	BOOL IsStackOverFlow() const 		{ return nMaxSize == nStackCnt; }
	BOOL IncStackCnt() 					{ return nMaxSize == ++nStackCnt; }
	void DecStackCnt() 					{ if( nStackCnt ) --nStackCnt; }
	void SetLastTblBox( const SwTableBox* pBox )	{ pLastTblBox = pBox; }
};



class SwTableFormula
{
typedef void (SwTableFormula:: *FnScanFormel)( const SwTable&, String&,
											String&, String*, void* ) const;

	void BoxNmsToPtr( const SwTable&, String&, String&, String* = 0,
						void* pPara = 0 ) const;
	void PtrToBoxNms( const SwTable&, String&, String&, String* = 0,
						void* pPara = 0 ) const;
	void _MakeFormel( const SwTable&, String&, String&, String* = 0,
						void* pPara = 0 ) const;
	void _SplitMergeBoxNm( const SwTable&, String&, String&, String* = 0,
						void* pPara = 0 ) const{DBG_BF_ASSERT(0, "STRIP");} //STRIP001 void* pPara = 0 ) const;

	void GetBoxes( const SwTableBox& rStt, const SwTableBox& rEnd,
					SwSelBoxes& rBoxes ) const;
	String ScanString( FnScanFormel fnFormel, const SwTable& rTbl,
						void* = 0 ) const;


protected:
	enum NameType { EXTRNL_NAME, INTRNL_NAME, REL_NAME };

	String 		sFormel;			// akt. Formel
	NameType 	eNmType;			// akt. Darstellungs Art
	BOOL 		bValidValue;		// TRUE: Formel neu berechnen

	// suche den Node, in dem die Formel steht:
	//	TextFeld	-> TextNode,
	//	BoxAttribut	-> BoxStartNode
	// !!! MUSS VON JEDER ABLEITUNG UEBERLADEN WERDEN !!!
	virtual const SwNode* GetNodeOfFormula() const = 0;

	SwTableFormula( const String& rFormel );

	String MakeFormel( SwTblCalcPara& rCalcPara ) const
	{
		return ScanString( &SwTableFormula::_MakeFormel,
							*rCalcPara.pTbl, &rCalcPara );
	}

public:

	SwTableFormula( const SwTableFormula& rCpy )	{ *this = rCpy; }
	SwTableFormula& operator=( const SwTableFormula& rCpy )
		{
									sFormel = rCpy.sFormel;
									eNmType = rCpy.eNmType;
									bValidValue = rCpy.bValidValue;
									return *this;
		}

	// erzeuge aus der internen (fuer CORE) die externe (fuer UI) Formel
	void PtrToBoxNm( const SwTable* pTbl );
	// erzeuge aus der externen (fuer UI) die interne (fuer CORE) Formel
	void BoxNmToPtr( const SwTable* pTbl );

	// ist gerade eine intern Darstellung aktiv
	BOOL IsIntrnlName() const			{ return eNmType == INTRNL_NAME; }
	// erfrage die akt. Darstellung der Formel
	NameType GetNameType() const		{ return eNmType; }

	// erfrage/setze das Flag, ob der akt. Wert gueltig ist
	BOOL 		IsValid() const				{ return bValidValue; }
	inline void	ChgValid( BOOL bNew )		{ bValidValue = bNew; }

	const String& GetFormula() const 		{ return sFormel; }
	void SetFormula( const String& rNew )
		{
			sFormel = rNew;
			bValidValue = FALSE;
			eNmType = EXTRNL_NAME;
		}

	// sind alle Boxen gueltig, auf die sich die Formel bezieht?
};



} //namespace binfilter
#endif
