1    /* 
2     * This interpreter is intended to paint different colored dots in a window. * 
3     * The commands that the interpreter can recognize and respond to are: 
4     * - BLUE: paint a blue dot 
5     * - RED: paint a red dot 
6     * - HELP: show a list of the commands in a dialog message box 
7     * - EXIT: terminate the program 
8     */
9    
10   package interpreters;
11   
12   import java.awt.Color;
13   import javax.swing.JOptionPane;
14   import javax.swing.SwingUtilities;
15   import painter.SPainter;
16   import shapes.SCircle;
17   
18   public class Interpreter2 {
19   
20       private void interpreter() {
21   
22           //CREATE OBJECTS TO THINK WITH
23           SPainter miro = new SPainter("Dot Thing", 400,400);
24           miro.setScreenLocation(0,0);
25           SCircle dot = new SCircle(180);
26   
27           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
28           while (true) {
29               String command = JOptionPane.showInputDialog(null, "Command");
30               if ( command == null ) { command = "exit"; } //user clicked on Cancel
31               if ( command.equalsIgnoreCase("blue") ) {
32                   miro.setColor( Color.BLUE );
33                   miro.paint(dot);
34               } else if ( command.equalsIgnoreCase("red")) {
35                   miro.setColor(Color.RED);
36                   miro.paint(dot);
37               } else if (command.equalsIgnoreCase("green")) {
38                   miro.setColor(Color.GREEN);
39                   miro.paint(dot);
40               } else if (command.equalsIgnoreCase("yellow")) {
41                   miro.setColor(Color.YELLOW);
42                   miro.paint(dot);
43               } else if ( command.equalsIgnoreCase("help")) {
44                   JOptionPane.showInputDialog( null, "Valid commands are: "
45                           + "RED | BLUE | GREEN | YELLOW |  HELP | EXIT " );
46               } else if ( command.equalsIgnoreCase("exit")) {
47                   miro.end();
48                   System.out.println( "Thank you for viewing the dots..." );
49                   break;
50               } else {
51                   JOptionPane.showMessageDialog(null, "Unrecognizable Command:"
52                           +command.toUpperCase());
53               }
54           }
55       }
56   
57       // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
58   
59       public Interpreter2() {
60           interpreter();
61       }
62   
63       public static void main(String[] args) {
64           SwingUtilities.invokeLater(new Runnable() {
65               @Override
66               public void run() {
67                   new Interpreter2();
68               }
69           });
70       }
71   }
72   
73