net.sf.jasperreports.engine.fill.events.FillEvents Maven / Gradle / Ivy
The newest version!
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2019 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.events;
import java.util.List;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.Stream.Builder;
import net.sf.jasperreports.engine.fill.JRFillContext;
import net.sf.jasperreports.engine.fill.events.ReportFillListenerProvider.ListenerConsumer;
/**
*
* @author Lucian Chirita ([email protected])
*/
public class FillEvents
{
private final ListenerRegistry listeners;
public FillEvents(JRFillContext fillContext)
{
List> fillListeners = collectFillListeners(fillContext);
this.listeners = new ListenerRegistry<>(fillListeners);
}
private List> collectFillListeners(JRFillContext fillContext)
{
List providers = fillContext.getMasterFiller().getJasperReportsContext()
.getExtensions(ReportFillListenerProvider.class);
return providers.stream().flatMap(provider ->
{
Builder> builder = Stream.builder();
provider.produce(fillContext, new ListenerConsumer()
{
@SuppressWarnings("unchecked")
@Override
public void accept(Class eventType, ReportEventListener listener)
{
builder.accept(new RegisteredListener(eventType,
(ReportEventListener) listener));
}
});
return builder.build();
}).collect(Collectors.toList());
}
public void triggerEvent(Class eventType, Supplier eventSupplier)
{
listeners.triggerEvent(eventType, eventSupplier);
}
}