net.sf.jasperreports.engine.part.FillPrintPartQueue Maven / Gradle / Ivy
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Free Java Reporting Library
/*
* 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.part;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.fill.PartReportFiller;
/**
* @author Lucian Chirita ([email protected])
*/
public class FillPrintPartQueue
{
public static final String EXCEPTION_MESSAGE_KEY_CANNOT_REMOVE_HEAD_PART = "engine.part.queue.cannot.remove.head.part";
public static final String EXCEPTION_MESSAGE_KEY_CANNOT_REPLACE_HEAD_PART = "engine.part.queue.cannot.replace.head.part";
private FillPrintPart head;
private FillPrintPart tail;
public FillPrintPartQueue(PartPrintOutput output)
{
this.head = this.tail = new FilledPrintPart(output);
}
public FillPrintPart head()
{
return head;
}
public FillPrintPart tail()
{
return tail;
}
public boolean isCollapsed()
{
return head == tail;
}
public FilledPrintPart appendOutput(PartPrintOutput output)
{
FilledPrintPart filledPart = new FilledPrintPart(output);
append(filledPart);
return filledPart;
}
public DelayedPrintPart appendDelayed(FillPart fillPart)
{
DelayedPrintPart delayedPart = new DelayedPrintPart(fillPart);
append(delayedPart);
return delayedPart;
}
protected void append(FillPrintPart part)
{
part.setPreviousPart(tail);
tail.setNextPart(part);
tail = part;
}
public void fillDelayed(DelayedPrintPart part, PartReportFiller filler, byte evaluation) throws JRException
{
PartPrintOutput appendOutput = part.previousPart().getOutput();
if (appendOutput != null)
{
part.getFillPart().fill(evaluation, appendOutput);
remove(part);
collapse(part.previousPart());
}
else
{
FillPartPrintOutput localOutput = new FillPartPrintOutput(filler);
part.getFillPart().fill(evaluation, localOutput);
FilledPrintPart filledPart = new FilledPrintPart(localOutput);
replace(part, filledPart);
collapse(filledPart);
}
}
protected void remove(DelayedPrintPart part)
{
if (part == head)
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_CANNOT_REMOVE_HEAD_PART,
(Object[])null);
}
part.previousPart().setNextPart(part.nextPart());
if (part == tail)
{
tail = part.previousPart();
}
else
{
part.nextPart().setPreviousPart(part.previousPart());
}
}
protected void replace(FillPrintPart originalPart, FillPrintPart newPart)
{
if (originalPart == head)
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_CANNOT_REPLACE_HEAD_PART,
(Object[])null);
}
newPart.setPreviousPart(originalPart.previousPart());
newPart.setNextPart(originalPart.nextPart());
originalPart.previousPart().setNextPart(newPart);
if (originalPart == tail)
{
tail = newPart;
}
else
{
originalPart.nextPart().setPreviousPart(newPart);
}
}
protected void collapse(FillPrintPart part)
{
PartPrintOutput output = part.getOutput();
FillPrintPart next = part.nextPart();
while (next != null && next.getOutput() != null)
{
FillPartPrintOutput nextOutput = (FillPartPrintOutput) next.getOutput();
output.append(nextOutput);
nextOutput.getDelayedActions().dispose();
next = next.nextPart();
}
part.setNextPart(next);
if (next == null)
{
tail = part;
}
else
{
next.setPreviousPart(part);
}
}
}