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/* TokenElementParser.java
* =========================================================================
* This file is part of the JMathTeX Library - http://jmathtex.sourceforge.net
*
* Copyright (C) 2004-2007 Universiteit Gent
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program 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
* General Public License for more details.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
package be.ugent.caagt.jmathtex.mathml;
import org.jdom.Element;
import be.ugent.caagt.jmathtex.TeXFormula;
abstract class TokenElementParser extends PresentationElementParser {
private static final String BACKGROUND = "mathbackground",
COLOR = "mathcolor";
/**
* Processes the two common attributes for all MathML token elements ("mathbackground"
* and "mathcolor").
*
* @param formula the TeXFormula for which the colors must be set
* (if attributes present)
* @param el the MathML token element
* @param env the rendering environment
* @return the possibly modified TeXFormula
* @throws MathMLException if the syntax of one of the color attributes was not correct
*/
protected TeXFormula processAtrributes(TeXFormula formula, Element el,
Environment env) throws MathMLException {
// get element attribute values
String background = el.getAttributeValue(BACKGROUND), color = el
.getAttributeValue(COLOR);
// if attribute values not set, use environment values if set
if (background == null)
background = env.get(BACKGROUND);
if (color == null)
color = env.get(COLOR);
return formula.setBackground(MathMLParser.getColor(background)).setColor(
MathMLParser.getColor(color));
}
// makes PMD happy
public abstract TeXFormula buildFormula(Element el, Environment env) throws MathMLException;
}
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