/*
* 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.engine.util;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import javax.swing.JEditorPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.Element;
import javax.swing.text.AbstractDocument.LeafElement;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JEditorPaneRtfMarkupProcessor.java 3939 2010-08-20 09:52:00Z teodord $
*/
public class JEditorPaneRtfMarkupProcessor extends JEditorPaneMarkupProcessor
{
private static final Log log = LogFactory.getLog(JEditorPaneRtfMarkupProcessor.class);
private static JEditorPaneRtfMarkupProcessor instance;
/**
*
*/
public static JEditorPaneRtfMarkupProcessor getInstance()
{
if (instance == null)
{
instance = new JEditorPaneRtfMarkupProcessor();
}
return instance;
}
/**
*
*/
public String convert(String srcText)
{
JEditorPane editorPane = new JEditorPane("text/rtf", srcText);
editorPane.setEditable(false);
List elements = new ArrayList();
Document document = editorPane.getDocument();
Element root = document.getDefaultRootElement();
if (root != null)
{
addElements(elements, root);
}
String chunk = null;
Element element = null;
int startOffset = 0;
int endOffset = 0;
JRStyledText styledText = new JRStyledText();
styledText.setGlobalAttributes(new HashMap());
for(int i = 0; i < elements.size(); i++)
{
if (chunk != null)
{
styledText.append(chunk);
styledText.addRun(new JRStyledText.Run(getAttributes(element.getAttributes()), startOffset, endOffset));
}
chunk = null;
element = (Element)elements.get(i);
startOffset = element.getStartOffset();
endOffset = element.getEndOffset();
try
{
chunk = document.getText(startOffset, endOffset - startOffset);
}
catch(BadLocationException e)
{
if (log.isDebugEnabled())
{
log.debug("Error converting markup.", e);
}
}
}
if (chunk != null && !"\n".equals(chunk))
{
styledText.append(chunk);
styledText.addRun(new JRStyledText.Run(getAttributes(element.getAttributes()), startOffset, endOffset));
}
return JRStyledTextParser.getInstance().write(styledText);
}
/**
*
*/
protected void addElements(List elements, Element element)
{
if(element instanceof LeafElement)
{
elements.add(element);
}
for(int i = 0; i < element.getElementCount(); i++)
{
Element child = element.getElement(i);
addElements(elements, child);
}
}
}