import java.awt.*;
import java.awt.event.*;

public class Dummy extends Frame
    implements ActionListener, ItemListener, WindowListener {

    public void actionPerformed(ActionEvent e){
        // send button pressed -- pretend to send the text
        traffic.append("\n\n"   // first a blank line, then
                       + handle.getText() + ": " // identify sender,
                       + msg.getText());         // and then add message
        msg.setText("");        // clear out the message area
    }

    public void itemStateChanged(ItemEvent e){
        // channel changed -- clear traffic area
        traffic.setText("");
    }

    private TextField handle;
    private Choice channel;
    private TextArea traffic;
    private TextArea msg;

    Dummy(){
        setLayout(new BorderLayout());
        Panel top = new Panel();
        top.add(new Label("Handle:"));
        handle = new TextField(10);
        handle.setText(System.getProperty("user.name"));
        top.add(handle);
        top.add(new Label("Channel:"));
        channel = new Choice();
        channel.add("Chat 1");
        channel.add("Chat 2");
        channel.addItemListener(this);
        top.add(channel);
        add(top, "North");
        traffic = new TextArea("", 20, 40, TextArea.SCROLLBARS_VERTICAL_ONLY);
        traffic.setEditable(false);
        add(traffic, "Center");
        Panel bottom = new Panel();
        bottom.setLayout(new BorderLayout());
        Panel bottomTop = new Panel();
        bottomTop.add(new Label("Type your message here:"));
        bottom.add(bottomTop, "North");
        msg = new TextArea("", 5, 40, TextArea.SCROLLBARS_VERTICAL_ONLY);
        bottom.add(msg, "Center");
        Panel bottomBottom = new Panel();
        Button send = new Button("Send");
        send.addActionListener(this);
        bottomBottom.add(send);
        bottom.add(bottomBottom, "South");
        add(bottom, "South");
        setTitle("Chat");
        setSize(400, 500);
        addWindowListener(this);
        show();
    }

    public void windowClosing(WindowEvent e){
        System.exit(0);
    }

    public void windowActivated(WindowEvent e){}
    public void windowClosed(WindowEvent e){}
    public void windowDeactivated(WindowEvent e){}
    public void windowDeiconified(WindowEvent e){}
    public void windowIconified(WindowEvent e){}
    public void windowOpened(WindowEvent e){}

    public static void main(String[] args){
        new Dummy();
    }
}