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 dot of a random color 
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 painter.SPainter;
17   import shapes.SCircle;
18   
19   import javax.swing.*;
20   import java.awt.*;
21   
22   public class Interpreters3 {
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) {
33                   command = "exit";
34               } // user clicked on cancel
35               if (command.equalsIgnoreCase("blue")) {
36                   miro.setColor(Color.BLUE);
37                   miro.paint(dot);
38               } else if (command.equalsIgnoreCase("red")) {
39                   miro.setColor(Color.RED);
40                   miro.paint(dot);
41               } else if (command.equalsIgnoreCase("yellow")) {
42                   miro.setColor(Color.YELLOW);
43                   miro.paint(dot);
44               } else if (command.equalsIgnoreCase("green")) {
45                   miro.setColor(Color.green);
46                   miro.paint(dot);
47               } else if (command.equalsIgnoreCase("random")){
48                   miro.setColor(randomColor());
49                   miro.paint(dot);
50               }else if (command.equalsIgnoreCase("help")) {
51                   JOptionPane.showMessageDialog(null, "Valid Commands are:" + "RED | BLUE | YELLOW | GREEN | RANDOM | HELP | EXIT");
52               } else if (command.equalsIgnoreCase("exit")) {
53                   miro.end();
54                   System.out.println("Thank you for viewing the dots...");
55                   break;
56               } else {
57                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
58                           + command.toUpperCase());
59               }
60           }
61       }
62   
63       private Color randomColor() {
64           int rv = (int)(Math.random()*256);
65           int gv = (int)(Math.random()*256);
66           int bv = (int)(Math.random()*256);
67           return new Color(rv,gv,bv);
68       }
69   
70       // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
71       public Interpreters3(){
72           interpreter();
73       }
74       public static void main(String[] args){
75           SwingUtilities.invokeLater(new Runnable() {
76               @Override
77               public void run() {
78                   new Interpreters3();
79               }
80           });
81       }
82   
83   
84   }
85