1    /*This interpreter is intended to paint different colored dots in a window. 
2    * 
3    * The commands that the interpreter can recognize and respond to are: 
4    *  - BLUE: paint a blue dot 
5    *  - RED: paint a red dot 
6    *  - GREEN: paint a green dot 
7    *  -YELLOW: paint a yellow dot 
8    *  -RANDOM: paint a random dot 
9    *  - HELP: show a list of the commands in a dialog message box 
10   *  - EXIT: terminate the program 
11   */
12   
13   package interpreters;
14   
15   import painter.SPainter;
16   import shapes.SCircle;
17   import javax.swing.*;
18   import java.awt.*;
19   
20   public class Interpreter3 {
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("green")) {
39                   miro.setColor(Color.GREEN);
40                   miro.paint(dot);
41                   } else if (command.equalsIgnoreCase("random")) {
42                   miro.setColor(randomColor());
43                   miro.paint(dot);
44                   } else if(command.equalsIgnoreCase("yellow")) {
45                   miro.setColor(Color.YELLOW);
46                   miro.paint(dot);
47                   } else if ( command.equalsIgnoreCase("help")) {
48                   JOptionPane.showMessageDialog(null, "Valid commands are: "
49                           + "RED | BLUE | GREEN | YELLOW | RANDOM | HELP | EXIT") ;
50                   } else if ( command.equalsIgnoreCase("exit")) {
51                   miro.end();
52                   System.out.println("Thank you for viewing the dots ...");
53                   break;
54                   } else {
55                   JOptionPane.showMessageDialog(null, "Unrecognizable command:"
56                           + command.toUpperCase());
57                   }
58               }
59   
60           }
61   
62           private static Color randomColor() {
63           int rv = (int)(Math.random()*256);
64           int gv = (int)(Math.random()*256);
65           int bv = (int)(Math.random()*256);
66           return new Color(rv,gv,bv);
67            }
68   
69           //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
70           public Interpreter3() {
71           interpreter();
72           }
73           public static void main(String[] args) {
74           SwingUtilities.invokeLater(new Runnable() {
75                  public void run() {
76                    new interpreters.Interpreter3();
77                                 }
78            });
79           }
80   }
81