/*
* 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 org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.Element;
import org.pentaho.reporting.engine.classic.core.function.Expression;
import org.pentaho.reporting.engine.classic.extensions.legacy.charts.LegacyChartElementModule;
import org.pentaho.reporting.engine.classic.extensions.legacy.charts.LegacyChartType;
import org.pentaho.reporting.engine.classic.extensions.parsers.reportdesigner.datasets.ReportFunctionReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class ChartElementReadHandler extends AbstractReportElementReadHandler
{
private Element element;
private ReportFunctionReadHandler chartFunctionReadHandler;
private ReportFunctionReadHandler dataCollectorFunction;
private ReportFunctionReadHandler dataCollectorFunction2;
public ChartElementReadHandler()
{
this.element = new Element();
this.element.setElementType(new LegacyChartType());
}
/**
* 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))
{
if ("chartFunction".equals(tagName))
{
chartFunctionReadHandler = new ReportFunctionReadHandler();
return chartFunctionReadHandler;
}
if ("dataCollectorFunction".equals(tagName))
{
dataCollectorFunction = new ReportFunctionReadHandler();
return dataCollectorFunction;
}
if ("dataCollectorFunction2".equals(tagName))
{
dataCollectorFunction2 = new ReportFunctionReadHandler();
return dataCollectorFunction2;
}
}
return super.getHandlerForChild(uri, tagName, atts);
}
/**
* Done parsing.
*
* @throws SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
super.doneParsing();
//final String chartType = getResult().getProperty("chartType");
//element.setAttribute(ReportDesignerParserModule.NAMESPACE, "ChartTypeHint", chartType);
// in fact, the chart type is redundant, as it can be derived from the chart expression itself.
if (chartFunctionReadHandler != null)
{
element.setAttributeExpression
(AttributeNames.Core.NAMESPACE, AttributeNames.Core.VALUE, chartFunctionReadHandler.getExpression());
}
if (dataCollectorFunction != null)
{
final Expression ex = dataCollectorFunction.getExpression();
// redundant, as this can be dereived from the property 'dataSource'
// element.setAttribute(ReportDesignerParserModule.NAMESPACE, "DataCollectorFunction", ex.getName());
element.setAttribute(LegacyChartElementModule.NAMESPACE, LegacyChartElementModule.PRIMARY_DATA_COLLECTOR_FUNCTION_ATTRIBUTE, ex);
}
if (dataCollectorFunction2 != null)
{
// Only valid on BarLineChartExpression, can be retrieved via 'linesDataSource' property
final Expression ex = dataCollectorFunction2.getExpression();
//element.setAttribute(ReportDesignerParserModule.NAMESPACE, "DataCollectorFunction2", ex.getName());
element.setAttribute(LegacyChartElementModule.NAMESPACE, LegacyChartElementModule.SECONDARY_DATA_COLLECTOR_FUNCTION_ATTRIBUTE, ex);
}
}
protected Element getElement()
{
return element;
}
}