/*
* Copyright (C) 2004 The Concord Consortium, Inc.,
* 10 Concord Crossing, Concord, MA 01742
*
* Web Site: http://www.concord.org
* Email: info@concord.org
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* END LICENSE */
/*
* Created on Sep 7, 2004
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
package org.concord.swing.about;
import java.io.IOException;
import java.io.InputStream;
import javax.swing.JComponent;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;
/**
* @author ebrownmunoz
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class AboutTextFromXML {
static String TYPE = "text/html";
public static JTabbedPane getTabbedPane(String filename) {
JTabbedPane tabbedPane = new JTabbedPane();
Document mydoc = read(filename);
parseTopLevelNode(tabbedPane, mydoc);
return tabbedPane;
}
private static Document read(String filename) {
Document document = null;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
InputStream urlStream;
try {
urlStream = AboutTextFromXML.class.getResourceAsStream(filename);
factory.setValidating(true);
DocumentBuilder builder = factory.newDocumentBuilder();
builder.setEntityResolver(new EntityResolver() {
public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
try {
return new InputSource(AboutTextFromXML.class.getResourceAsStream("xml/about.dtd"));
} catch (Throwable t ) {
System.out.println(t);
}
return null;
}
});
builder.setErrorHandler(new ParseErrorHandler());
document = builder.parse( urlStream );
} catch (Exception parseException ) {
System.err.println("Parse Exception " + parseException);
System.err.println(parseException.getMessage());
parseException.printStackTrace();
}
return document;
}
// This parses any node that is not subordinate to tab.
// Right now this means <about>.
private static void parseTopLevelNode (JTabbedPane tabbedPane, Node aNode) {
NodeList nlist = aNode.getChildNodes();
int length = nlist.getLength();
for (int i = 0 ; i < length; i++) {
Node tNode = nlist.item(i);
if (tNode.getNodeName().equals("about")) {
parseTopLevelNode(tabbedPane, tNode);
} else if (tNode.getNodeName().equals("tab")) {
parseTab(tabbedPane, tNode);
}
}
}
// Parse <tab> elements
private static JComponent parseTab (JTabbedPane parent, Node aNode) {
JEditorPane retval = null;
JScrollPane scroll;
String tabName = "";
String contents;
Node attributeNode = aNode.getAttributes().getNamedItem("name");
if (attributeNode != null)
tabName = attributeNode.getNodeValue();
contents = "<html>" + parseContents(aNode) + "</html>";
retval = new JEditorPane(TYPE, contents);
retval.setEditable(false);
scroll = new JScrollPane(retval, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
if (parent != null) {
parent.add(tabName, scroll);
}
return retval;
}
private static String parseContents(Node aNode) {
NodeList nlist = aNode.getChildNodes();
int length = nlist.getLength();
StringBuffer contents = new StringBuffer();
String name = aNode.getNodeName();
String retval;
if (name.equals("#text")) {
contents.append(aNode.getNodeValue());
return contents.toString();
} else if (name.equals("foo")) {
} else {
for (int i = 0 ; i < length; i++) {
Node tNode = nlist.item(i);
if (tNode.getNodeName().equals("#text")) {
contents.append(tNode.getNodeValue());
} else {
contents.append(parseContents(tNode));
}
}
}
if (name.equals("tab")) {
retval = contents.toString();
} else {
retval = "<" + name + ">" + contents.toString() + "</" + name + ">";
}
return retval;
}
public static void main(String [] args) {
JFrame frame = new JFrame("About Box");
JTabbedPane contents = getTabbedPane("SampleAboutText.xml");
frame.getContentPane().add(contents);
frame.pack();
frame.show();
}
}
class ParseErrorHandler extends DefaultHandler {
public void error(SAXParseException spe){
System.err.println("SAX Parse error:" + spe.getMessage());
System.err.println("SAX Parse error:" + spe.getPublicId());
}
public void fatalError(SAXParseException spe){
System.err.println("Fatal SAX parse error:" + spe.getMessage());
System.err.println("Fatal SAX parse error:" + spe.getPublicId());
}
}