/*  File:  TextFieldTest.java
 *
 *  An editable text field (i.e., a one-line text area)
 */

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;

public class TextFieldTest extends Applet {

  private Label usernameLabel, passwordLabel;
  private TextField username, password;
  private Panel usernamePanel, passwordPanel;

  public void init() {
    TextFieldHandler usernameHandler, passwordHandler;
    
    setBackground(Color.white);
    
    usernameLabel = new Label( "Username:  ", Label.RIGHT );
    
    username = new TextField( 20 );
    usernameHandler = new TextFieldHandler( this );
    usernameHandler.setPrefix( "Username is: " );
    username.addActionListener( usernameHandler );
    
    usernamePanel = new Panel();
    usernamePanel.add( usernameLabel );
    usernamePanel.add( username );
    
    passwordLabel = new Label( "Password:  ", Label.RIGHT );
    
    password = new TextField( 20 );
    password.setEchoChar( '*' );
    passwordHandler = new TextFieldHandler( this );
    passwordHandler.setPrefix( "Password received." );
    password.addActionListener( passwordHandler );
    
    passwordPanel = new Panel();
    passwordPanel.add( passwordLabel );
    passwordPanel.add( password );
    
    // Instantiate a grid and add the panel:
    int rows = 2, cols = 1;
    setLayout( new GridLayout( rows, cols ) );
    add( usernamePanel ); add( passwordPanel );
  }

}

class TextFieldHandler implements ActionListener {

  private Applet applet;
  private String prefix;
  
  public TextFieldHandler ( Applet a ) {
    applet = a; prefix = "";
  }
  
  public void setPrefix( String s ) { prefix = s; }

  public void actionPerformed( ActionEvent e ) {
    String text = e.getActionCommand();
    if ( ! text.equals("") ) {
      TextField textfield = (TextField) e.getSource();
      if ( textfield.echoCharIsSet() ) {
        applet.showStatus( prefix );
      } else {
        applet.showStatus( prefix + text );
      }
    }
  }
  
}