import java.awt.FlowLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JPasswordField;
import javax.swing.JOptionPane;
import javax.swing.JLabel;



/**
   A simple JFrame---similar to the one presented in the
   YouTube video "Java Programming Tutorial-53 ActionListener
   by YouTube user "thenewboston".  

   This class corresponds to the tuna class from the video.

   (http://www.youtube.com/watch?v=qhYook53olE)

   @author Youtube user "thenewboston"
   @author Phill Conrad
   @see <a href="http://www.youtube.com/watch?v=qhYook53olE">Youtube Link</a>


 */

public class MyJFrame extends JFrame {

    private JLabel theLabel;
    private JTextField jtf1;
    private JTextField jtf2;
    private JTextField jtf3;

    public MyJFrame() {
	super("My Window Title"); // superclass constructor sets the title
	setLayout(new FlowLayout()); // default layout

	theLabel = new JLabel("This is my JFrame");
	theLabel.setToolTipText("Click in the fields, change them, then hit Enter while in the field.  See what happens!");
	add(theLabel);

	jtf1 = new JTextField(10);             add(jtf1);
	jtf2 = new JTextField("default text"); add(jtf2); 
	jtf3 = new JTextField("uneditable");   
	jtf3.setEditable(false);
	add(jtf3);

	// Add some brains to the things on the screen
	// so they are waiting for something--listening, as it were

	MyHandler handler = new MyHandler();

	jtf1.addActionListener(handler);
	jtf2.addActionListener(handler);
	jtf3.addActionListener(handler);

	

    } // MyJFrame

    // inner class 

    private class MyHandler implements ActionListener {
	public void actionPerformed(ActionEvent event) {
	    String string = "";
	    if (event.getSource()==jtf1) {
		// getActionCommand gets the text from the JTextField
		string = String.format("field 1: %s", event.getActionCommand());
	    } else if (event.getSource()==jtf2) {
		string = String.format("field 2: %s", event.getActionCommand());
	    } else if (event.getSource()==jtf3) {
		string = String.format("field 3: %s", event.getActionCommand());
	    } // if-else if-else if-else

	    System.out.println(string);
	} // actionPerformed



    }// innerclass MyHandler
} // outerclass MyJFrame