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   import javax.swing.JOptionPane;
12   import javax.swing.SwingUtilities;
13   import java.awt.Color;
14   
15   import painter.SPainter;
16   import shapes.SCircle;
17   
18   
19   public class Interpreter3 {
20   // STATIC METHOD APPENDED
21       private static Color randomColor(){
22           int rv = (int)(Math.random()*256);
23           int gv = (int)(Math.random()*256);
24           int bv = (int)(Math.random()*256);
25           return new Color(rv,gv,bv);
26       }
27       private void interpreter3() {
28   // CREATE OBJECTS TO THINK WITH
29           SPainter miro = new SPainter("Dot Thing", 400, 400);
30           miro.setScreenLocation(0, 0);
31           SCircle dot = new SCircle(180);
32   // REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
33           while (true) {
34               String command = JOptionPane.showInputDialog(null, "Command? Type \"help\" if you want to know more");
35               if (command == null) {
36                   command = "exit";
37               } // user clicked on Cancel
38               if (command.equalsIgnoreCase("blue")) {
39                   miro.setColor(Color.BLUE);
40                   miro.paint(dot);
41               } else if (command.equalsIgnoreCase("red")) {
42                   miro.setColor(Color.RED);
43                   miro.paint(dot);
44               }
45               else if (command.equalsIgnoreCase("green")) {
46                   miro.setColor(Color.GREEN);
47                   miro.paint(dot);
48               }
49               else if (command.equalsIgnoreCase("yellow")) {
50                   miro.setColor(Color.YELLOW);
51                   miro.paint(dot);
52               }
53               else if (command.equalsIgnoreCase("random")) {
54                   miro.setColor(randomColor());
55                   miro.paint(dot);
56               }
57               else if (command.equalsIgnoreCase("help")) {
58                   JOptionPane.showMessageDialog(null, "Valid commands are: "
59                           + "RED | BLUE | GREEN | YELLOW | HELP | RANDOM | EXIT ");
60               } else if (command.equalsIgnoreCase("exit")) {
61                   miro.end();
62                   JOptionPane.showMessageDialog(null, "Thank you for viewing the dots");
63                   System.out.println("Thank you for viewing the dots");
64                   break;
65               } else {
66                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
67                           + command.toUpperCase());
68               }
69           }
70       }
71   
72   
73       // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
74       public Interpreter3() {
75           interpreter3();
76       }
77   
78       public static void main(String[] args) {
79           SwingUtilities.invokeLater(new Runnable() {
80               public void run() {
81                   new Interpreter3();
82               }
83           });
84       }
85   }
86   
87