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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2022 TIBCO Software Inc. 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 .
*/
package net.sf.jasperreports.engine.fill;
import java.util.ArrayList;
import java.util.List;
import net.sf.jasperreports.engine.JasperPrint;
/**
* {@link FillListener} implementation that contains several other listeners.
*
* @author Lucian Chirita ([email protected])
*/
public class CompositeFillListener implements FillListener
{
public static FillListener addListener(FillListener existingListener, FillListener listener)
{
if (existingListener == null)
{
return listener;
}
if (listener == null)
{
return existingListener;
}
if (existingListener instanceof CompositeFillListener)
{
((CompositeFillListener) existingListener).listeners.add(listener);
return existingListener;
}
CompositeFillListener newListener = new CompositeFillListener();
newListener.listeners.add(existingListener);
newListener.listeners.add(listener);
return newListener;
}
private final List listeners = new ArrayList<>();
@Override
public void pageGenerated(JasperPrint jasperPrint, int pageIndex)
{
for (FillListener listener : listeners)
{
listener.pageGenerated(jasperPrint, pageIndex);
}
}
@Override
public void pageUpdated(JasperPrint jasperPrint, int pageIndex)
{
for (FillListener listener : listeners)
{
listener.pageUpdated(jasperPrint, pageIndex);
}
}
}