1    package interpreters;
2    
3    import java.awt.Color;
4    import javax.swing.SwingUtilities;
5    import painter.SPainter;
6    import shapes.SCircle;
7    import javax.swing.JOptionPane;
8    
9    public class Interpreter3 {
10       private void interpreter() {
11   
12           //Create objects to think with
13           SPainter miro = new SPainter("Dot Thing", 400, 400);
14           miro.setScreenLocation(0,0);
15           SCircle dot = new SCircle(180);
16   
17           //Repeatedly take a command from an input dialog pox and interpret it
18           while (true) {
19               String command = JOptionPane.showInputDialog(null,"Command?");
20               if ( command == null) { command = "exit" ;} // user clicked on cancel
21               if ( command.equalsIgnoreCase("blue")) {
22                   miro.setColor(Color.BLUE);
23                   miro.paint(dot);
24               } else if ( command.equalsIgnoreCase("red")) {
25                   miro.setColor(Color.RED);
26                   miro.paint(dot);
27               } else if( command.equalsIgnoreCase("green")) {
28                   miro.setColor(Color.GREEN);
29                   miro.paint(dot);
30               } else if (command.equalsIgnoreCase("yellow")) {
31                   miro.setColor(Color.yellow);
32                   miro.paint(dot);
33               } else if (command.equalsIgnoreCase("random")) {
34                   miro.setColor(randomColor());
35                   miro.paint(dot);
36               }
37   
38               else if ( command.equalsIgnoreCase("help")) {
39                   JOptionPane.showMessageDialog(null, "Valid commands are:" +
40                           " RED / BLUE / GREEN / YELLOW / RANDOM / 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   
54       private static Color randomColor() {
55           int rv = (int)(Math.random()*256);
56           int gv = (int)(Math.random()*256);
57           int bv = (int)(Math.random()*256);
58           return new Color(rv,gv,bv);
59       }
60   
61       //Infrastructure for some simple painting
62   
63       public Interpreter3() {
64           interpreter();
65       }
66   
67       public static void main(String[] args) {
68           SwingUtilities.invokeLater(new Runnable() {
69               @Override
70               public void run() {
71                   new Interpreter3();
72               }
73           });
74       }
75   
76   
77   }