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     * -GREEN: paint a green dot 
8     * -YELLOW: paint a yellow dot 
9     * -RANDOM: paint a random 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 javax.swing.JOptionPane;
18   import javax.swing.SwingUtilities;
19   import painter.SPainter;
20   import shapes.SCircle;
21   
22   public class Interpreter3 {
23       private void interpreter() {
24           // CREATE OBJECTS TO THINK WITH
25           SPainter miro = new SPainter("Dot Thing",400,400);
26           miro.setScreenLocation(0,0);
27           SCircle dot = new SCircle(180);
28   
29           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
30           while ( true ) {
31               String command = JOptionPane.showInputDialog(null,"Command?");
32               if ( command == null) { command = "exit"; } // user clicked on Cancel
33               if ( command.equalsIgnoreCase("blue") ) {
34                   miro.setColor(Color.BLUE);
35                   miro.paint(dot);
36               } else if ( command.equalsIgnoreCase("red") ) {
37                   miro.setColor(Color.RED);
38                   miro.paint(dot);
39               } else if ( command.equalsIgnoreCase("green") ) {
40                   miro.setColor(Color.GREEN);
41                   miro.paint(dot);
42               } else if ( command.equalsIgnoreCase("yellow") ) {
43                   miro.setColor(Color.YELLOW);
44                   miro.paint(dot);
45               } else if ( command.equalsIgnoreCase("random") ) {
46                   miro.setColor(randomColor());
47                   miro.paint(dot);
48               } else if ( command.equalsIgnoreCase("help")) {
49                   JOptionPane.showMessageDialog(null,"Valid commands are:" + "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:" + command.toUpperCase());
56               }
57           }
58       }
59   
60       private static Color randomColor() {
61           int rv = (int)(Math.random()*256);
62           int gv = (int)(Math.random()*256);
63           int bv = (int)(Math.random()*256);
64           return new Color(rv,gv,bv);
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               public void run() {
75                   new Interpreter3();
76               }
77           });
78       }
79   }
80