/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.charts.util;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRPrintHyperlink;
import org.jfree.chart.entity.CategoryItemEntity;
import org.jfree.chart.entity.ChartEntity;
import org.jfree.chart.entity.XYItemEntity;
import org.jfree.data.general.Dataset;
/**
* A chart item hyperlink provider used for multiple axis charts.
*
* A separate hyperlink provider can be set for each axis/dataset in the
* multi chart. This provider then resolves the provider for each
* chart entity and delegates the hyperlink retrieval to it.
*
* @author Lucian Chirita (lucianc@users.sourceforge.net)
* @version $Id: MultiAxisChartHyperlinkProvider.java 3032 2009-08-27 11:32:28Z teodord $
*/
public class MultiAxisChartHyperlinkProvider implements ChartHyperlinkProvider
{
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
private Map datasetProviders = new HashMap();
/**
* Creates a multiple axis chart hyperlink provider.
*/
public MultiAxisChartHyperlinkProvider()
{
}
/**
* Registers a hyperlink provider for a specific dataset.
*
* The dataset will be used to determine a provider for a chart entity.
*
* @param dataset the dataset
* @param provider the hyperlink provider
*/
public void addHyperlinkProvider(Dataset dataset, ChartHyperlinkProvider provider)
{
datasetProviders.put(dataset, provider);
}
/**
* Returns <code>true</code> if any of the registered providers has hyperlinks.
*/
public boolean hasHyperlinks()
{
boolean hasHyperlinks = false;
if (!datasetProviders.isEmpty())
{
for (Iterator it = datasetProviders.values().iterator(); it.hasNext();)
{
ChartHyperlinkProvider provider = (ChartHyperlinkProvider) it.next();
if (provider.hasHyperlinks())
{
hasHyperlinks = true;
break;
}
}
}
return hasHyperlinks;
}
/**
* Determines the provider for the chart entity based on its dataset,
* and delegates the call to it.
*/
public JRPrintHyperlink getEntityHyperlink(ChartEntity entity)
{
JRPrintHyperlink hyperlink = null;
ChartHyperlinkProvider provider = resolveEntityProvider(entity);
if (provider != null && provider.hasHyperlinks())
{
hyperlink = provider.getEntityHyperlink(entity);
}
return hyperlink;
}
protected ChartHyperlinkProvider resolveEntityProvider(ChartEntity entity)
{
ChartHyperlinkProvider provider = null;
Dataset dataset = getEntityDataset(entity);
if (dataset != null)
{
provider = (ChartHyperlinkProvider) datasetProviders.get(dataset);
}
return provider;
}
protected Dataset getEntityDataset(ChartEntity entity)
{
Dataset dataset = null;
if (entity instanceof CategoryItemEntity)
{
dataset = ((CategoryItemEntity) entity).getDataset();
}
else if (entity instanceof XYItemEntity)
{
dataset = ((XYItemEntity) entity).getDataset();
}
return dataset;
}
}