/* CMPUT114(2003-2004, Fall) http://www-csfy.cs.ualberta.ca/~c114/F03 */
    
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.applet.*;

public class JListDo extends JApplet implements ActionListener {
    
    private JLabel item;
    private JList itemList;
    
    public void init() {
        this.item = new JLabel();
        this.addButton();
        Container container = this.getContentPane();
        this.itemList = this.getList();
        container.add(this.getPanel());
    }
    private JList getList() {
        // Create a List with the 5 course items
        String[] data = {"Math 113", "Cmput 114", "Phil 120", 
                         "Cmput 272", "Chem 105"};
  
        JList tempList = new JList(data);
        tempList.setVisibleRowCount(3);
  
        // Enable single selection
        tempList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        return tempList;
    }
    
    private JButton addButton() {
        JButton button = new JButton("Get Item");
        button.addActionListener(this);
        return button;
    }
    
    private JPanel getPanel() {
        // set layout to GridLayout 4 rows and 1 columns
        JPanel panel = new JPanel(new GridLayout(4,1,0,0));
  
        JScrollPane spane1 = new JScrollPane(this.itemList);
        panel.add(new JLabel("Example List"));
        panel.add(spane1);
        panel.add(this.item);
        panel.add(this.addButton());
  
        return panel;
    }
    
    
    public void actionPerformed(ActionEvent evt) {
        String command = evt.getActionCommand();
  
        // Get the selected value from the list and update the JLabel
        item.setText((String)itemList.getSelectedValue());
    }
}