/*
* $Id: EditorPaneLinkVisitor.java 3471 2009-08-27 13:10:39Z kleopatra $
*
* Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx.hyperlink;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.URL;
import javax.swing.SwingUtilities;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
import javax.swing.text.Document;
import org.jdesktop.swingx.JXEditorPane;
/**
* A ActionListener using a JXEditorPane to "visit" a LinkModel.
*
* adds an internal HyperlinkListener to visit links contained
* in the document.
*
* @author Jeanette Winzenburg
*/
public class EditorPaneLinkVisitor implements ActionListener {
private JXEditorPane editorPane;
private HyperlinkListener hyperlinkListener;
private LinkModel internalLink;
public EditorPaneLinkVisitor() {
this(null);
}
public EditorPaneLinkVisitor(JXEditorPane pane) {
if (pane == null) {
pane = createDefaultEditorPane();
}
this.editorPane = pane;
pane.addHyperlinkListener(getHyperlinkListener());
}
public JXEditorPane getOutputComponent() {
return editorPane;
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() instanceof LinkModel) {
final LinkModel link = (LinkModel) e.getSource();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
visit(link);
}
});
}
}
public void visit(LinkModel link) {
try {
// make sure to reload
editorPane.getDocument().putProperty(Document.StreamDescriptionProperty, null);
// JW: editorPane defaults to asynchronous loading
// no need to explicitly start a thread - really?
editorPane.setPage(link.getURL());
link.setVisited(true);
} catch (IOException e1) {
editorPane.setText("<html>Error 404: couldn't show " + link.getURL() + " </html>");
}
}
protected JXEditorPane createDefaultEditorPane() {
final JXEditorPane editorPane = new JXEditorPane();
editorPane.setEditable(false);
editorPane.setContentType("text/html");
return editorPane;
}
protected HyperlinkListener getHyperlinkListener() {
if (hyperlinkListener == null) {
hyperlinkListener = createHyperlinkListener();
}
return hyperlinkListener;
}
protected HyperlinkListener createHyperlinkListener() {
return new HyperlinkListener() {
public void hyperlinkUpdate(HyperlinkEvent e) {
if (HyperlinkEvent.EventType.ACTIVATED == e.getEventType()) {
visitInternal(e.getURL());
}
}
};
}
protected LinkModel getInternalLink() {
if (internalLink == null) {
internalLink = new LinkModel("internal");
}
return internalLink;
}
protected void visitInternal(URL url) {
try {
getInternalLink().setURL(url);
visit(getInternalLink());
} catch (Exception e) {
// todo: error feedback
}
}
}