HtmlGui.java:
package ca.sarah_happy.sandbox;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.net.URL;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JSlider;
import javax.swing.JTextPane;
import javax.swing.SwingUtilities;
import javax.swing.WindowConstants;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.Element;
import javax.swing.text.html.HTMLDocument;
public class HtmlGui implements Runnable {
public static void main(String[] args) {
SwingUtilities.invokeLater(new HtmlGui());
}
private JTextPane viewer;
private HTMLDocument document;
@Override
public void run() {
try {
viewer = new JTextPane();
viewer.setEditable(false);
viewer.setPreferredSize(new Dimension(400, 300));
JFrame frame = new JFrame("screen");
frame.setContentPane(new JScrollPane(viewer));
frame.pack();
frame.setLocationByPlatform(true);
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
URL screen = HtmlGui.class.getResource("screen.html");
viewer.setPage(screen);
document = (HTMLDocument) viewer.getDocument();
viewer.addPropertyChangeListener("page", onLoad);
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
private JSlider slider;
private PropertyChangeListener onLoad = new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent e) {
JButton button = new JButton("Button");
button.addActionListener(onButton);
insertComponent("button", button);
slider = new JSlider();
slider.addChangeListener(onSlider);
insertComponent("slider", slider);
}
};
private ChangeListener onSlider = new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
addOutput("changed slider: " + slider.getValue());
}
};
private void insertComponent(String id, Component component) {
Element e = document.getElement(id);
viewer.setCaretPosition(e.getStartOffset());
viewer.moveCaretPosition(e.getEndOffset());
viewer.insertComponent(component);
}
private ActionListener onButton = new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
addOutput("pressed button");
}
};
private void addOutput(String text) {
try {
Element out = document.getElement("output");
document.insertString(out.getEndOffset() - 1, text + "\n", null);
} catch (BadLocationException ex) {
ex.printStackTrace();
}
}
}
screen.html:
<html><body> Some stuff... <p><span id="button">button</span> <span id="slider">slider</span></p> <p><i>Output:</i> <div id="output"></div></p> </body></html>
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