package graphics;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class TelephoneKeypadPanel extends JPanel {
   public TelephoneKeypadPanel() {
      setLayout(new GridLayout(4, 3));
      makeButton("1", 1);
      makeButton("2 - abc", 2);
      makeButton("3 - def", 3);
      makeButton("4 - ghi", 4);
      makeButton("5 - jkl", 5);
      makeButton("6 - mno", 6);
      makeButton("7 - pqrs", 7);
      makeButton("8 - tuv", 8);
      makeButton("9 - wxyz", 9);
      makeButton("*", 42);
      makeButton("O - oper", 0);
      makeButton("#", 35);
   }

   private void makeButton(String label, int val) {
      JButton button = new JButton(label);
      button.addActionListener(new TelephoneButtonListener(val));
      add(button);
   }

   private class TelephoneButtonListener implements ActionListener {
      private int value;

      public TelephoneButtonListener(int val) {
         value = val;
      }

      public void actionPerformed(ActionEvent event) {
         System.out.print(" " + value);
      }
   }

}