1    /* 
2    * This interpreter is intended to paint different colored dots in a window. 
3    * 
4    * the commands that the interpreter can recognize and respond to are: 
5    * - BLUE: paint a blue dot 
6    * - RED: paint a red dot 
7    * - HELP: show a list of the commands in a dialog message box 
8    * - EXIT: terminate the program 
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 Interpreter1 {
19   
20       private void interpreter() {
21           //Create objects to think with
22           SPainter miro = new SPainter("Dot Thing", 400, 400);
23           miro.setScreenLocation(0, 0);
24           SCircle dot = new SCircle(180);
25   
26           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
27           while (true) {
28               String command = JOptionPane.showInputDialog(null, "Command?");
29               if (command == null) {
30                   command = "exit";
31               } //user clicked on cancel
32               if (command.equalsIgnoreCase("blue")) {
33                   miro.setColor(Color.blue);
34                   miro.paint(dot);
35               } else if (command.equalsIgnoreCase("red")) {
36                   miro.setColor(Color.red);
37                   miro.paint(dot);
38               } else if (command.equalsIgnoreCase("help")) {
39                   JOptionPane.showMessageDialog(null, "Valid commands are: "
40                           + "RED | BLUE | HELP | EXIT ");
41               } else if (command.equalsIgnoreCase("exit")) {
42                   miro.end();
43                   System.out.println("Thank you for viewing the dots ... ");
44                   break;
45               } else {
46                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
47                           + command.toUpperCase());
48               }
49           }
50       }
51   
52       //Infrastructure for some simple painting
53   
54       public Interpreter1() {
55           interpreter();
56       }
57   
58       public static void main(String[] args) {
59           SwingUtilities.invokeLater(new Runnable() {
60               public void run() {
61                   new Interpreter1();
62               }
63           });
64       }
65   }
66