//: c13:ListNew.java
// From Thinking in Java, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// <applet code = "ListNew" width = 250
// height = 350 > </applet>
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.border.*;

public class ListNew extends JApplet {
  String[] flavors = { "Chocolate", "Strawberry",
    "Vanilla Fudge Swirl", "Mint Chip",
    "Mocha Almond Fudge", "Rum Raisin",
    "Praline Cream", "Mud Pie" };
  DefaultListModel lItems=new DefaultListModel();
  JList lst = new JList(lItems);
  JTextArea t = new JTextArea(flavors.length,20);
  JButton b = new JButton("Add Item");
  ActionListener bl = new ActionListener() {
    public void actionPerformed(ActionEvent e) {
      if(count < flavors.length) {
        lItems.add(0, flavors[count++]);
      } else {
        // Disable, since there are no more
        // flavors left to be added to the List
        b.setEnabled(false);
      }
    }
  };
  ListSelectionListener ll =
    new ListSelectionListener() {
      public void valueChanged(
        ListSelectionEvent e) {
          t.setText("");
          Object[] items=lst.getSelectedValues();
          for(int i = 0; i < items.length; i++)
            t.append(items[i] + "\n");
        }
    };
  int count = 0;
  public void init() {
    Container cp = getContentPane();
    t.setEditable(false);
    cp.setLayout(new FlowLayout());
    // Create Borders for components:
    Border brd = BorderFactory.createMatteBorder(
      1, 1, 2, 2, Color.black);
    lst.setBorder(brd);
    t.setBorder(brd);
    // Add the first four items to the List
    for(int i = 0; i < 4; i++)
      lItems.addElement(flavors[count++]);
    // Add items to the Content Pane for Display
    cp.add(t);
    cp.add(lst);
    cp.add(b);
    // Register event listeners
    lst.addListSelectionListener(ll);
    b.addActionListener(bl);
  }
  public static void main(String[] args) {
    JApplet applet = new ListNew();
    JFrame frame = new JFrame("ListNew");
    frame.addWindowListener(
      new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
          System.exit(0);
        }
      });
    frame.getContentPane().add(applet);
    frame.setSize(250, 350);
    applet.init();
    applet.start();
    frame.setVisible(true);
  }
} ///:~