// Initialize all the GUI components and display the frame
private static void initGUI() {
// Set up the status bar
statusField = new JLabel();
statusField.setText(statusMessages[DISCONNECTED]);
statusColor = new JTextField(1);
statusColor.setBackground(Color.red);
statusColor.setEditable(false);
statusBar = new JPanel(new BorderLayout());
statusBar.add(statusColor, BorderLayout.WEST);
statusBar.add(statusField, BorderLayout.CENTER);
// Set up the options pane
JPanel optionsPane = initOptionsPane();
// Set up the chat pane
JPanel chatPane = new JPanel(new BorderLayout());
chatText = new JTextArea(10, 20);
chatText.setLineWrap(true);
chatText.setEditable(false);
chatText.setForeground(Color.blue);
JScrollPane chatTextPane =
new JScrollPane(
chatText,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
chatLine = new JTextField();
chatLine.setEnabled(false);
chatLine.addActionListener(
new ActionAdapter() {
public void actionPerformed(ActionEvent e) {
String s = chatLine.getText();
if (!s.equals("")) {
appendToChatBox("OUTGOING: " + s + "\n");
chatLine.selectAll();
// Send the string
sendString(s);
}
}
});
chatPane.add(chatLine, BorderLayout.SOUTH);
chatPane.add(chatTextPane, BorderLayout.CENTER);
chatPane.setPreferredSize(new Dimension(200, 200));
// Set up the main pane
JPanel mainPane = new JPanel(new BorderLayout());
mainPane.add(statusBar, BorderLayout.SOUTH);
mainPane.add(optionsPane, BorderLayout.WEST);
mainPane.add(chatPane, BorderLayout.CENTER);
// Set up the main frame
mainFrame = new JFrame("Simple TCP Chat");
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainFrame.setContentPane(mainPane);
mainFrame.setSize(mainFrame.getPreferredSize());
mainFrame.setLocation(200, 200);
mainFrame.pack();
mainFrame.setVisible(true);
}
// Checks the current state and sets the enables/disables
// accordingly
public void run() {
switch (connectionStatus) {
case DISCONNECTED:
connectButton.setEnabled(true);
disconnectButton.setEnabled(false);
ipField.setEnabled(true);
portField.setEnabled(true);
hostOption.setEnabled(true);
guestOption.setEnabled(true);
chatLine.setText("");
chatLine.setEnabled(false);
statusColor.setBackground(Color.red);
break;
case DISCONNECTING:
connectButton.setEnabled(false);
disconnectButton.setEnabled(false);
ipField.setEnabled(false);
portField.setEnabled(false);
hostOption.setEnabled(false);
guestOption.setEnabled(false);
chatLine.setEnabled(false);
statusColor.setBackground(Color.orange);
break;
case CONNECTED:
connectButton.setEnabled(false);
disconnectButton.setEnabled(true);
ipField.setEnabled(false);
portField.setEnabled(false);
hostOption.setEnabled(false);
guestOption.setEnabled(false);
chatLine.setEnabled(true);
statusColor.setBackground(Color.green);
break;
case BEGIN_CONNECT:
connectButton.setEnabled(false);
disconnectButton.setEnabled(false);
ipField.setEnabled(false);
portField.setEnabled(false);
hostOption.setEnabled(false);
guestOption.setEnabled(false);
chatLine.setEnabled(false);
chatLine.grabFocus();
statusColor.setBackground(Color.orange);
break;
}
// Make sure that the button/text field states are consistent
// with the internal states
ipField.setText(hostIP);
portField.setText((new Integer(port)).toString());
hostOption.setSelected(isHost);
guestOption.setSelected(!isHost);
statusField.setText(statusString);
chatText.append(toAppend.toString());
toAppend.setLength(0);
mainFrame.repaint();
}