//: c13:ChoiceNew.java
// From Thinking in Java, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Drop-down lists (combo boxes)
// <applet code=ChoiceNew 
// width=450 height=200></applet>
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class ChoiceNew extends JApplet {
  String[] descriptions1 = { "Ebullient", 
    "Obtuse", "Recalcitrant", "Brilliant" };
  String[] descriptions2 = { "Somnescent",
    "Timorous", "Florid", "Putrescent" };
  JTextArea t = new JTextArea(7, 40);
  JComboBox c = new JComboBox(descriptions1);
  JButton b = new JButton("Add items");
  int count = 0;
  public void init() {
    Container cp = getContentPane();
    cp.setLayout(new FlowLayout());
    t.setLineWrap(true);
    t.setEditable(false);
    cp.add(t);
    cp.add(c);
    cp.add(b);
    c.addItemListener(new CL());
    b.addActionListener(new BL());
  }
  class CL implements ItemListener {
    public void itemStateChanged(ItemEvent e) {
      t.setText("index: " +  c.getSelectedIndex()
        + "   " + e.toString());
    }
  }
  class BL implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      if(count < descriptions2.length)
        c.addItem(descriptions2[count++]);
      if(count >=descriptions2.length)
        b.setEnabled(false);
    }
  }
  public static void main(String[] args) {
    JApplet applet = new ChoiceNew();
    Frame frame = new Frame("ChoiceNew");
    frame.addWindowListener(
      new WindowAdapter() {
        public void windowClosing(WindowEvent e){
          System.exit(0);
        }
      });
    frame.add(applet);
    frame.setSize(450,200);
    applet.init();
    applet.start();
    frame.setVisible(true);
  }
} ///:~