/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2008 - 2009 Pentaho Corporation, . All rights reserved.
*/
package org.pentaho.reporting.engine.classic.extensions.parsers.reportdesigner.elements;
import java.util.ArrayList;
import java.util.HashMap;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.pentaho.reporting.engine.classic.core.function.Expression;
import org.pentaho.reporting.engine.classic.core.function.FormulaExpression;
import org.pentaho.reporting.engine.classic.extensions.parsers.reportdesigner.ReportDesignerParserUtil;
import org.xml.sax.SAXException;
import org.xml.sax.Attributes;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class ElementStyleExpressionsReadHandler extends AbstractXmlReadHandler
{
private ArrayList styleExpressions;
private HashMap expressions;
public ElementStyleExpressionsReadHandler()
{
styleExpressions = new ArrayList();
}
/**
* Returns the handler for a child element.
*
* @param uri the URI of the namespace of the current element.
* @param tagName the tag name.
* @param atts the attributes.
* @return the handler or null, if the tagname is invalid.
* @throws SAXException if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild(final String uri, final String tagName, final Attributes atts) throws SAXException
{
if (isSameNamespace(uri) == false)
{
return null;
}
if ("styleExpression".equals(tagName))
{
final ElementStyleExpressionReadHandler readHandler = new ElementStyleExpressionReadHandler();
styleExpressions.add(readHandler);
return readHandler;
}
return super.getHandlerForChild(uri, tagName, atts);
}
/**
* Done parsing.
*
* @throws SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
super.doneParsing();
expressions = new HashMap();
for (int i = 0; i < styleExpressions.size(); i++)
{
final ElementStyleExpressionReadHandler handler = (ElementStyleExpressionReadHandler) styleExpressions.get(i);
final FormulaExpression expression = new FormulaExpression();
expression.setFormula(ReportDesignerParserUtil.normalizeFormula(handler.getFormula()));
expressions.put(handler.getStyleKey(), expression);
}
}
/**
* Returns the object for this element or null, if this element does
* not create an object.
*
* @return the object.
* @throws SAXException if an parser error occured.
*/
public Object getObject() throws SAXException
{
return expressions;
}
}