/*
** A program to convert the XML rendered by KWord into LATEX.
**
** Copyright (C) 2000 Robert JACOLIN
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Library General Public
** License as published by the Free Software Foundation; either
** version 2 of the License, or (at your option) any later version.
**
** This library 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
** Library General Public License for more details.
**
** To receive a copy of the GNU Library General Public License, write to the
** Free Software Foundation, Inc., 59 Temple Place - Suite 330,
** Boston, MA  02111-1307, USA.
**
*/

#include <stdlib.h>		/* for atoi function */
#include <kdebug.h>		/* for kdDebug() stream */
#include <qptrstack.h>		/* for getFormula() */
#include <qdom.h>
#include "formula.h"
#include <kapplication.h>

#include <kformuladocument.h>
#include <kformulamimesource.h>

/*******************************************/
/* Constructor                             */
/*******************************************/
Formula::Formula()
{
	_left              = 0;
	_right             = 0;
	_top               = 0;
	_bottom            = 0;
	_runaround         = TA_NONE;
	_runaroundGap      = 0;
	_autoCreate        = TC_EXTEND;
	_newFrameBehaviour = TF_RECONNECT;

}

/*******************************************/
/* analyse                                 */
/*******************************************/
void Formula::analyse(const QDomNode balise)
{

	/* MARKUP TYPE : FRAMESET INFO = TEXTE, ENTETE CONNUE */

	/* Parameters Analyse */
	Element::analyse(balise);

	kdDebug(30522) << "FRAME ANALYSE (Formula)" << endl;

	/* Chlidren markups Analyse */
	for(int index= 0; index < getNbChild(balise); index++)
	{
		if(getChildName(balise, index).compare("FRAME")== 0)
		{
			analyseParamFrame(balise);
		}
		else if(getChildName(balise, index).compare("FORMULA")== 0)
		{
			getFormula(getChild(getChild(balise, "FORMULA"), "FORMULA"), 0);
			kdDebug(30522) << _formula << endl;
		}

	}
	kdDebug(30522) << "END OF A FRAME" << endl;
}

/*******************************************/
/* getFormula                              */
/*******************************************/
/* Get back the xml markup tree.           */
/*******************************************/
void Formula::getFormula(QDomNode p, int indent)
{
	switch( p.nodeType() )
	{
		case QDomNode::TextNode:
			_formula = _formula + QString(p.toText().data()) + " ";
			break;
	/*	case TT_Space:
			_formula = _formula + p->zText;
			//printf("%*s\"%s\"\n", indent, "", p->zText);
			break;
		case TT_EOL:
			_formula = _formula + "\n";
			//printf("%*s\n", indent, "");
			break;*/
		case QDomNode::ElementNode:
			_formula = _formula + "<" + p.nodeName();
			QDomNamedNodeMap attr = p.attributes();
			for(unsigned int index = 0; index < attr.length(); index++)
			{ // The attributes
				_formula = _formula + " " + attr.item(index).nodeName();
				_formula = _formula + "=\"" + attr.item(index).nodeValue() + "\"";
			}
			if(p.childNodes().length() == 0)
				_formula = _formula + "/>\n";
			else
			{
				_formula = _formula + ">\n";
				QDomNodeList child = p.childNodes();
				for(unsigned int index = 0; index < child.length(); index++)
				{
					getFormula(child.item(index), indent + 3); // The child elements
				}
				_formula = _formula + "</" + p.nodeName() + ">\n";
			}
			break;
		/*case QDomNode::AttributeNode:
		case QDomNode::CDATASectionNode:
		case QDomNode::EntityReferenceNode:
		case QDomNode::EntityNode:
		case QDomNode::ProcessingInstructionNode:
		case QDomNode::CommentNode:
		case QDomNode::DocumentNode:
		case QDomNode::DocumentTypeNode:
		case QDomNode::DocumentFragmentNode:
		case QDomNode::NotationNode:
		case QDomNode::BaseNode:
		case QDomNode::CharacterDataNode:
			break;*/
                        //default:
                        //kdError(30522) << "Can't happen" << endl;
                        //break;

	}
}

/*******************************************/
/* analyseParamFrame                       */
/*******************************************/
void Formula::analyseParamFrame(const QDomNode balise)
{
	/*<FRAME left="28" top="42" right="566" bottom="798" runaround="1" />*/

	_left = getAttr(balise, "left").toInt();
	_top = getAttr(balise, "top").toInt();
	_right = getAttr(balise, "right").toInt();
	_bottom = getAttr(balise, "bottom").toInt();
	setRunAround(getAttr(balise, "runaround").toInt());
	setAroundGap(getAttr(balise, "runaroundGap").toInt());
	setAutoCreate(getAttr(balise, "autoCreateNewFrame").toInt());
	setNewFrame(getAttr(balise, "newFrameBehaviour").toInt());
	setSheetSide(getAttr(balise, "sheetside").toInt());
}

/*******************************************/
/* generate                                */
/*******************************************/
void Formula::generate(QTextStream &out)
{
	kdDebug(30522) << "FORMULA GENERATION" << endl;
	QDomDocument doc;
	doc.setContent(_formula);

   	// a new KFormula::Document for every formula is not the best idea.
	// better to have only one such beast for the whole document.
        KFormula::DocumentWrapper* wrapper = new KFormula::DocumentWrapper( kapp->config(), 0 );
        KFormula::Document* formulaDoc = new KFormula::Document;
        wrapper->document( formulaDoc );

	KFormula::Container* formula = formulaDoc->createFormula();
	if ( !formula->load( doc.documentElement () ) ) {
		kdError(30522) << "Failed." << endl;
	}

 	out << "$" << formula->texString() << "$";
        delete formula;

        delete wrapper;
}

