burro.java

jbshortcourse

import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class Burro extends Frame implements ActionListener, ItemListener {

  TextArea ta;

  public Burro () {
    super ("Burro");
    ta = new TextArea ();
    ta.setEditable(false);
    add (ta, BorderLayout.CENTER);
    CheckboxGroup cb = new CheckboxGroup ();
    Panel p = new Panel(new GridLayout (0, 1));
    String fonts[] = getToolkit().getFontList();
    Checkbox c;
    for (int i=0;i<fonts.length;i++) {
      p.add (c = new Checkbox (fonts[i], false, cb));
      c.addItemListener (this);
    }
    add (p, BorderLayout.EAST);
    TextField tf = new TextField ();
    // Without this, 'null' echo char stops output
    // If real life, should fix Valdez.inspect().
    tf.setEchoChar ('*');
    tf.addActionListener (this);
    add (tf, BorderLayout.SOUTH);
    List l = new List();
    for (int i=0;i<fonts.length;i++) {
      l.add (fonts[i]);
    }
    l.addItemListener (this);
    add (l, BorderLayout.WEST);
    add (new Label (
      "Select something and see Bean Information in Text Area"),
      BorderLayout.NORTH);
    enableEvents (AWTEvent.WINDOW_EVENT_MASK);
    pack ();
    show();
  }

  public static void main (String args[]) {
    Burro b = new Burro ();
  }

  public void itemStateChanged (ItemEvent e) {
    inspectIt (e);
  }

  public void actionPerformed (ActionEvent e) {
    inspectIt (e);
  }

  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING)
      System.exit(0);
  }

  public void inspectIt (AWTEvent e) {
    StringWriter sw = new StringWriter();
    Valdez.inspect (e.getSource(), sw);
    ta.setText(sw.toString());
  }
}