EditorPaneSample.java Source code

Introduction

Here is the source code for EditorPaneSample.java

Source

/*
Definitive Guide to Swing for Java 2, Second Edition
By John Zukowski       
ISBN: 1-893115-78-X
Publisher: APress
*/

import java.awt.Container;
import java.awt.Frame;
import java.io.IOException;
import java.net.URL;

import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
import javax.swing.text.Document;

public class EditorPaneSample {
    public static void main(String args[]) throws IOException {
        JFrame frame = new JFrame("EditorPane Example");
        Container content = frame.getContentPane();

        JEditorPane editorPane = new JEditorPane("http://www.apress.com");
        editorPane.setEditable(false);

        HyperlinkListener hyperlinkListener = new ActivatedHyperlinkListener(frame, editorPane);
        editorPane.addHyperlinkListener(hyperlinkListener);

        JScrollPane scrollPane = new JScrollPane(editorPane);
        content.add(scrollPane);

        frame.setSize(640, 480);
        frame.setVisible(true);
    }
}

class ActivatedHyperlinkListener implements HyperlinkListener {

    Frame frame;

    JEditorPane editorPane;

    public ActivatedHyperlinkListener(Frame frame, JEditorPane editorPane) {
        this.frame = frame;
        this.editorPane = editorPane;
    }

    public void hyperlinkUpdate(HyperlinkEvent hyperlinkEvent) {
        HyperlinkEvent.EventType type = hyperlinkEvent.getEventType();
        final URL url = hyperlinkEvent.getURL();
        if (type == HyperlinkEvent.EventType.ENTERED) {
            System.out.println("URL: " + url);
        } else if (type == HyperlinkEvent.EventType.ACTIVATED) {
            System.out.println("Activated");
            Runnable runner = new Runnable() {
                public void run() {
                    // Retain reference to original
                    Document doc = editorPane.getDocument();
                    try {
                        editorPane.setPage(url);
                    } catch (IOException ioException) {
                        JOptionPane.showMessageDialog(frame, "Error following link", "Invalid link",
                                JOptionPane.ERROR_MESSAGE);
                        editorPane.setDocument(doc);
                    }
                }
            };
            SwingUtilities.invokeLater(runner);
        }
    }
}