package ai1.klientjava;

import java.awt.Container;
import java.awt.BorderLayout;
import java.awt.Panel;
import java.awt.Button;
import java.awt.TextField;
import java.awt.Label;
import java.applet.Applet;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

/**
 * A simple applet that writes to <code>System.out</code> when any of the
 * four applet methods are called.
 */
public class AppletDemo extends Applet {
    
    /**
     * Called when the applet is unloaded. Does nothing but to 
     * write to <code>System.out</code>.
     */
    public void destroy() {
	System.out.println("destroy");
    }
    
    /**
     * Called when the applet is loaded.Writes to <code>System.out</code>
     * and displays a simple GUI.
     */
    public void init() {
	System.out.println("init");
	showGUI();
    }
    
    /**
     * Called when the applet apears on the screen. Does nothing but to 
     * write to <code>System.out</code>.
     */
    public void start() {
	System.out.println("start");
    }
    
    /**
     * Called when the applet is removed from the screen. 
     * Does nothing but to write to <code>System.out</code>.
     */
    public void stop() {
	System.out.println("stop");
    }
    
    private void showGUI() {
	setLayout(new BorderLayout());
	final Label infoLabel = 
	    new Label("What's your name?");
	infoLabel.setAlignment(Label.CENTER);
	add(infoLabel, BorderLayout.CENTER);

	Panel getNamePanel = new Panel();
	getNamePanel.add(new Label("Enter name here:"));
	final TextField nameField = new TextField(20);
	getNamePanel.add(nameField);
	Button okButton = new Button("OK");
	getNamePanel.add(okButton);
	okButton.addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent e) {
		    infoLabel.setText("Your name is " + 
				      nameField.getText());
		}
	    });
	add(getNamePanel, BorderLayout.SOUTH);
    }
}