net.sf.jasperreports.engine.util.UniformPrintElementVisitor Maven / Gradle / Ivy
/*
* 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.util;
import java.util.List;
import net.sf.jasperreports.engine.JRGenericPrintElement;
import net.sf.jasperreports.engine.JRPrintElement;
import net.sf.jasperreports.engine.JRPrintEllipse;
import net.sf.jasperreports.engine.JRPrintFrame;
import net.sf.jasperreports.engine.JRPrintImage;
import net.sf.jasperreports.engine.JRPrintLine;
import net.sf.jasperreports.engine.JRPrintRectangle;
import net.sf.jasperreports.engine.JRPrintText;
import net.sf.jasperreports.engine.PrintElementVisitor;
/**
* Print element visitor that delegates all visit calls to a single method.
*
* @author Lucian Chirita ([email protected])
*/
public abstract class UniformPrintElementVisitor implements
PrintElementVisitor
{
private final boolean deep;
/**
* Creates a uniform visitor.
*/
protected UniformPrintElementVisitor()
{
this.deep = false;
}
/**
* Creates an optionally deep uniform visitor.
*
* @param deep whether elements are to be deeply visited
* @see DeepPrintElementVisitor
*/
protected UniformPrintElementVisitor(boolean deep)
{
this.deep = deep;
}
protected abstract void visitElement(JRPrintElement element, T arg);
@Override
public void visit(JRPrintText textElement, T arg)
{
visitElement(textElement, arg);
}
@Override
public void visit(JRPrintImage image, T arg)
{
visitElement(image, arg);
}
@Override
public void visit(JRPrintRectangle rectangle, T arg)
{
visitElement(rectangle, arg);
}
@Override
public void visit(JRPrintLine line, T arg)
{
visitElement(line, arg);
}
@Override
public void visit(JRPrintEllipse ellipse, T arg)
{
visitElement(ellipse, arg);
}
@Override
public void visit(JRPrintFrame frame, T arg)
{
visitElement(frame, arg);
if (deep)
{
List elements = frame.getElements();
if (elements != null)
{
visitFrameElements(elements, arg);
}
}
}
protected void visitFrameElements(List elements, T arg)
{
for (JRPrintElement element : elements)
{
element.accept(this, arg);
}
}
@Override
public void visit(JRGenericPrintElement printElement, T arg)
{
visitElement(printElement, arg);
}
}