1    /* 
2     * This interpreter is intended to pass 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     * - GREEN: paint a green dot 
8     * - YELLOW: paint a yellow dot 
9     * - RANDOM: paints a randomly colored dot 
10    * - HELP: show a list of the commands in a dialog message box 
11    * - EXIT: terminate the program 
12    */
13   
14   package interpreters;
15   
16   import java.awt.Color;
17   import java.sql.SQLOutput;
18   import java.util.Locale;
19   import javax.swing.JOptionPane;
20   import javax.swing.SwingUtilities;
21   import painter.SPainter;
22   import shapes.SCircle;
23   
24   public class Interpreter3 {
25   
26       private void interpreter() {
27   
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   
33           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
34           while (true) {
35               String command  = JOptionPane.showInputDialog(null, "Command?");
36               if (command == null) { command = "exit"; } //user clicked on cancel
37               if (command.equalsIgnoreCase("blue")) {
38                   miro.setColor(Color.BLUE);
39                   miro.paint(dot);
40               } else if (command.equalsIgnoreCase("red")) {
41                   miro.setColor(Color.RED);
42                   miro.paint(dot);
43               } else if (command.equalsIgnoreCase("green")) {
44                   miro.setColor(Color.GREEN);
45                   miro.paint(dot);
46               } else if (command.equalsIgnoreCase("yellow")) {
47                   miro.setColor(Color.YELLOW);
48                   miro.paint(dot);
49               } else if (command.equalsIgnoreCase("random")) {
50                   miro.setColor(randomColor());
51                   miro.paint(dot);
52               } else if (command.equalsIgnoreCase("help")) {
53                   JOptionPane.showMessageDialog(null, "Valid commands are: "
54                           + "RED | BLUE | GREEN | YELLOW | RANDOM | HELP | EXIT ");
55               } else if (command.equalsIgnoreCase("exit")) {
56                   miro.end();
57                   System.out.println("Thank you for viewing the dots ...");
58                   break;
59               } else {
60                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
61                           + command.toUpperCase());
62               }
63           }
64       }
65   
66       private static Color randomColor() {
67           int rv = (int)(Math.random()*256);
68           int gv = (int)(Math.random()*256);
69           int bv = (int)(Math.random()*256);
70           return new Color(rv, gv, bv);
71       }
72   
73       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
74   
75       public Interpreter3() {
76           interpreter();
77       }
78   
79       public static void main(String[] args) {
80           SwingUtilities.invokeLater(new Runnable() {
81               public void run() {
82                   new Interpreter3();
83               }
84           });
85       }
86   }