GUI Listener not Listening
Hello everyone. I am attempting to create an NHL game tracker. For some reason my GUI listener isn't recognizing when I click a button. The only buttons that I have active thus far are Clear, Closed, and Standings. What might cause this? How can I fix it?
Code:
/**
* Module: GameTracker.java
* Author: M. Patten
* Date: 2010-11-04
* Description: Program to track game information for NHL teams. This program will
* also access a database using JDBC.
**/
import java.awt.HeadlessException;
import java.awt.event.*;
import javax.swing.*;
public class GameTracker extends JFrame
{
private static final long serialVersionUID = 11;
private static final double FR_WIDTH_FACTOR = 0.275;
private static final double FR_HEIGHT_FACTOR = 0.294;
// Create Arrays for each ComboBox
private final static String[] MONTH = { "Month", "January", "February", "March", "April", "May", "June", "July", "Augaust", "September", "October", "November", "December" };
private final static String[] DAY = { "Day", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31" };
private final static String[] YEAR = { "Year", "2010", "2011" };
private String [] teamArray;
private int [] teamIdArray;
// GUI Items
private JLabel dateLabel = new JLabel("<< Date >>");
private JComboBox monthCombo = new JComboBox(MONTH);
private JComboBox dayCombo = new JComboBox(DAY);
private JComboBox yearCombo = new JComboBox(YEAR);
private JLabel homeLabel = new JLabel("HOME", JLabel.CENTER);
private JLabel awayLabel = new JLabel("AWAY", JLabel.CENTER);
private JLabel teamLabel = new JLabel("<< Team >>");
private JComboBox homeCombo = new JComboBox();
private JComboBox awayCombo = new JComboBox();
private JLabel goalsLabel = new JLabel("Goals");
private JTextField goalHomeField = new JTextField("", 3);
private JTextField goalAwayField = new JTextField("", 3);
private JCheckBox overtimeCheckBox = new JCheckBox("Overtime?");
private JCheckBox shootoutCheckBox = new JCheckBox("Shootout?");
public JButton addButton = new JButton("Add");
public JButton clearButton = new JButton ("Clear");
private JButton deleteButton = new JButton("Delete");
private JButton retrieveButton = new JButton("<< Retrieve >>");
private JButton standingsButton = new JButton("Standings");
public JButton closeButton = new JButton("Close");
// Data object
private NHLData data = null;
private GUIListener listener = new GUIListener();
public GameTracker() throws HeadlessException
{
// Set-up basic JFrame
this.setTitle("NHL Game Tracker");
int frWidth = (int) (FR_WIDTH_FACTOR * this.getToolkit().getScreenSize().width);
int frHeight = (int) (FR_HEIGHT_FACTOR * this.getToolkit().getScreenSize().height);
this.setSize(frWidth, frHeight);
this.setLocationRelativeTo(null);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setResizable(false);
// Create the NHLData object
try
{
data = new NHLData();
teamArray = data.getTeamNames();
teamIdArray = data.getTeamIds();
if( teamArray.length > 0 )
{
homeCombo = new JComboBox(teamArray);
awayCombo = new JComboBox(teamArray);
}
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(this, ex.getMessage());
}
// Create group layout
GroupLayout layout = new GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setAutoCreateGaps(true);
layout.setAutoCreateContainerGaps(true);
// Set horizontal group layout
layout.setHorizontalGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addComponent(dateLabel)
.addComponent(teamLabel)
.addComponent(goalsLabel)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addComponent(addButton)
.addComponent(clearButton)))
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(monthCombo)
.addComponent(dayCombo))
.addComponent(homeLabel)
.addComponent(homeCombo)
.addComponent(goalHomeField)
.addComponent(overtimeCheckBox)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addComponent(deleteButton)
.addComponent(retrieveButton)))
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addComponent(yearCombo)
.addComponent(awayLabel)
.addComponent(awayCombo)
.addComponent(goalAwayField)
.addComponent(shootoutCheckBox)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addComponent(standingsButton)
.addComponent(closeButton)))
);
// Make all the components listed below the same size.
layout.linkSize(SwingConstants.HORIZONTAL, homeCombo, awayCombo, addButton, retrieveButton,
clearButton, standingsButton, deleteButton, closeButton);
layout.linkSize(SwingConstants.HORIZONTAL, dayCombo, yearCombo);
layout.linkSize(SwingConstants.HORIZONTAL, goalHomeField, goalAwayField);
layout.linkSize(SwingConstants.HORIZONTAL,monthCombo);
// Set vertical group layout
layout.setVerticalGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addGap(5, 5, 40)
.addComponent(dateLabel)
.addComponent(monthCombo)
.addComponent(dayCombo)
.addComponent(yearCombo))))
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addGap(5, 5, 40)
.addComponent(homeLabel)
.addComponent(awayLabel))))
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addGap(5, 5, 40)
.addComponent(teamLabel)
.addComponent(homeCombo)
.addComponent(awayCombo))))
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addGap(5, 5, 40)
.addComponent(goalsLabel)
.addComponent(goalHomeField)
.addComponent(goalAwayField))))
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addGap(5, 5, 40)
.addComponent(shootoutCheckBox)
.addComponent(overtimeCheckBox))))
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addGap(5, 5, 40)
.addComponent(addButton)
.addComponent(deleteButton)
.addComponent(standingsButton))))
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(clearButton)
.addComponent(retrieveButton)
.addComponent(closeButton))))
);
// Display the JFrame
this.pack();
this.setVisible(true);
}
public static void main(String[] args)
{
new GameTracker();
}
private class GUIListener implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
try
{
if( e.getSource() == retrieveButton )
{
// Obtain the teamID from one of the team fields
int teamIndex = homeCombo.getSelectedIndex();
if( teamIdArray[teamIndex] == 0 )
teamIndex = awayCombo.getSelectedIndex();
if( teamIdArray[teamIndex] == 0 )
JOptionPane.showMessageDialog(GameTracker.this, "No team is selected!");
else
{
String month = monthCombo.getSelectedItem().toString();
int day = Integer.parseInt( dayCombo.getSelectedItem().toString() );
int year = Integer.parseInt( yearCombo.getSelectedItem().toString() );
if( data.findGame(month, year, day, teamIdArray[teamIndex]) )
{
// Find the correct home team
int teamID = data.getHomeTeamId();
teamIndex = 0;
for(; teamIndex < teamIdArray.length; teamIndex ++)
{
if( teamIdArray[teamIndex] == teamID )
break;
}
homeCombo.setSelectedIndex(teamIndex);
// Find the correct away team
teamID = data.getAwayTeamId();
teamIndex = 0;
for(; teamIndex < teamIdArray.length; teamIndex ++)
{
if( teamIdArray[teamIndex] == teamID )
break;
}
awayCombo.setSelectedIndex(teamIndex);
goalHomeField.setText("" + data.getHomeScore());
goalAwayField.setText("" + data.getAwayScore());
}
else
JOptionPane.showMessageDialog(GameTracker.this, "No matching game found!");
}
}
else if( e.getSource() == clearButton )
{
// Clear the GUI's fields
monthCombo.setSelectedItem(" ");
dayCombo.setSelectedItem(" ");
yearCombo.setSelectedItem(" ");
homeCombo.setSelectedItem(" ");
awayCombo.setSelectedItem(" ");
goalHomeField.setText(" ");
goalAwayField.setText(" ");
}
else if( e.getSource() == standingsButton )
{
// Display the team standings
new Standings( data.getConnection() );
}
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(GameTracker.this, ex.getMessage());
}
}
}
}
