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     *  - HELP: show a list of commands in a dialog message box 
10    *  - RANDOM: paint a dot a random color 
11    *  - EXIT: terminate the program 
12    */
13   package interpreters;
14   
15   import java.awt.Color;
16   import javax.swing.JOptionPane;
17   import javax.swing.SwingUtilities;
18   import painter.SPainter;
19   import shapes.SCircle;
20   
21   public class Interpreter3 {
22   
23       private void interpreter() {
24   
25           //CREATE OBJECTS TO THINK WITH
26           SPainter miro = new SPainter("Dot Thing", 400,400);
27           miro.setScreenLocation(0,0);
28           SCircle dot = new SCircle(180);
29   
30           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
31           while (true) {
32               String command = JOptionPane.showInputDialog(null,"Command?");
33               if ( command == null) { command = "exit"; } // user clicked on Cancel
34               if ( command.equalsIgnoreCase("blue") ) {
35                   miro.setColor(Color.BLUE);
36                   miro.paint(dot);
37               } else if ( command.equalsIgnoreCase("red") ) {
38                   miro.setColor(Color.RED);
39                   miro.paint(dot);
40               } else if ( command.equalsIgnoreCase("green") ) {
41                   miro.setColor(Color.GREEN);
42                   miro.paint(dot);
43               } else if ( command.equalsIgnoreCase("yellow") ) {
44                   miro.setColor(Color.YELLOW);
45                   miro.paint(dot);
46               } else if ( command.equalsIgnoreCase("help") ) {
47                   JOptionPane.showMessageDialog(null, "Valid commands are:" + "BLUE | RED | GREEN | YELLOW | HELP | RANDOM | EXIT");
48               } else if ( command.equalsIgnoreCase("random") ) {
49                   miro.setColor(randomColor());
50                   miro.paint(dot);
51               } else if ( command.equalsIgnoreCase("exit") ) {
52                   miro.end();
53                   System.out.println("Thank you for viewing the dots ...");
54                   break;
55               } else {
56                   JOptionPane.showMessageDialog(null, "Unrecognizable command: " + "command.toUperCase()");
57               }
58           }
59       }
60   
61       private Color randomColor() {
62           int rv = (int)(Math.random()*256);
63           int gv = (int)(Math.random()*256);
64           int bv = (int)(Math.random()*256);
65           return new Color(rv,gv,bv);
66       }
67       // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
68   
69       public Interpreter3() {
70           interpreter();
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   
81