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   
11   package interpreters;
12   
13   import java.awt.Color;
14   import javax.swing.JOptionPane;
15   import javax.swing.SwingUtilities;
16   import painter.SPainter;
17   import shapes.SCircle;
18   
19   public class Interpreter1 {
20   
21       private void interpreter() {
22   
23           // Create objects to think with:
24           SPainter miro = new SPainter("Dot Thing" ,400,400);
25           miro.setScreenLocation(0,0);
26           SCircle dot = new SCircle(180);
27   
28           //Repeatedly take a command from an input dialog box and interpret it
29           while (true) {
30               String command = JOptionPane.showInputDialog(null, "Command?");
31               if (command == null) {command = "exit";} //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   
53       //infrastructure for simple painting
54   
55       public Interpreter1() {
56           interpreter();
57       }
58   
59       public static void main(String[] args) {
60           SwingUtilities.invokeLater(new Runnable() {
61               public void run() {
62                   new Interpreter1();
63               }
64           });
65       }
66   }