/*
* 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) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.parser.ext.readhandlers;
import java.util.ArrayList;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.engine.classic.core.Band;
import org.pentaho.reporting.engine.classic.core.Element;
import org.pentaho.reporting.engine.classic.core.function.Expression;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.PropertyAttributes;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.common.StyleExpressionHandler;
import org.pentaho.reporting.engine.classic.core.modules.parser.ext.factory.elements.ElementFactoryCollector;
import org.pentaho.reporting.engine.classic.core.style.StyleKey;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.SAXException;
public class BandReadHandler extends ElementReadHandler
{
private static final Log logger = LogFactory.getLog(BandReadHandler.class);
private ArrayList elementHandlers;
private ArrayList styleExpressionHandlers;
public BandReadHandler(final Band element)
{
super(element);
elementHandlers = new ArrayList();
this.styleExpressionHandlers = new ArrayList();
}
/**
* Returns the handler for a child element.
*
* @param tagName the tag name.
* @param atts the attributes.
* @return the handler or null, if the tagname is invalid.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild(final String uri,
final String tagName,
final PropertyAttributes atts)
throws SAXException
{
if (isSameNamespace(uri) == false)
{
return null;
}
if ("style".equals(tagName))
{
return new StyleReadHandler(getElement().getStyle());
}
else if ("default-style".equals(tagName))
{
BandReadHandler.logger.warn("Tag <default-style> is deprecated. All definitions " +
"have been mapped into the bands primary style sheet.");
return new StyleReadHandler(getElement().getStyle());
}
if ("style-expression".equals(tagName))
{
final StyleExpressionHandler styleExpressionHandler = new StyleExpressionHandler();
styleExpressionHandlers.add(styleExpressionHandler);
return styleExpressionHandler;
}
else if ("element".equals(tagName))
{
// type is not really used anymore. We always return org.pentaho.reporting.engine.classic.core.Element
final String type = atts.getValue(getUri(), "type");
final ElementFactoryCollector fc = (ElementFactoryCollector)
getRootHandler().getHelperObject
(ReportDefinitionReadHandler.ELEMENT_FACTORY_KEY);
final Element element = fc.getElementForType(type);
if (element == null)
{
throw new ParseException("There is no factory for elements of type '" +
type + '\'', getLocator());
}
final XmlReadHandler readHandler = new ElementReadHandler(element);
elementHandlers.add(readHandler);
return readHandler;
}
else if ("band".equals(tagName))
{
final XmlReadHandler readHandler = new BandReadHandler(new Band());
elementHandlers.add(readHandler);
return readHandler;
}
return null;
}
/**
* Done parsing.
*
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void doneParsing()
throws SAXException
{
super.doneParsing();
final Band band = (Band) getElement();
for (int i = 0; i < elementHandlers.size(); i++)
{
final ElementReadHandler readHandler = (ElementReadHandler) elementHandlers.get(i);
band.addElement(readHandler.getElement());
}
for (int i = 0; i < styleExpressionHandlers.size(); i++)
{
final StyleExpressionHandler handler =
(StyleExpressionHandler) styleExpressionHandlers.get(i);
final StyleKey key = handler.getKey();
if (handler.getKey() != null)
{
final Expression expression = handler.getExpression();
band.setStyleExpression(key, expression);
}
}
}
}