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 Interpreter3 {
20   
21       private void interpreter() {
22   
23           // Create object 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"; }
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("yellow")) {
42                   miro.setColor(Color.YELLOW);
43                   miro.paint(dot);
44               } else if ( command.equalsIgnoreCase("random")) {
45                   miro.setColor(randomColor());
46                   miro.paint(dot);
47               } else if ( command.equalsIgnoreCase("help")) {
48                   JOptionPane.showMessageDialog(null , "Valid comments are: " + "Red | Blue | Green | Yellow | Random | Help | Exit ");
49               } else if ( command.equalsIgnoreCase("exit")) {
50                   miro.end();
51                   System.out.println("Thank you for viewing the dots ...");
52                   break;
53               } else {
54                   JOptionPane.showMessageDialog(null , "Unrecognizable command : " + command.toUpperCase());
55               }
56           }
57       }
58   
59       private Color randomColor() {
60           int rv = (int)(Math.random()*256);
61           int gv = (int)(Math.random()*256);
62           int bv = (int)(Math.random()*256);
63           return new Color(rv,gv,bv);
64       }
65   
66       // Infrastructure for some simple painting
67   
68       public Interpreter3() {
69           interpreter();
70       }
71   
72       public static void main(String[] args) {
73           SwingUtilities.invokeLater(new Runnable() {
74               @Override
75               public void run() {
76                   new Interpreter3();
77               }
78           });
79       }
80   }
81