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 dots 
6     * -RED: paint a red dot 
7     * -GREEN: paint a green dot 
8     * -YELLOW: paint a yellow dot 
9     * -RANDOM: paint random dot 
10    * -HELP: show a list of 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   
24       private void interpreter() {
25   
26           //CREATE OBJECTS TO THINK WITH
27           SPainter miro = new SPainter("Dot Thing", 400,400);
28           miro.setScreenLocation(0,0);
29           SCircle dot = new SCircle(180);
30   
31           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
32           while (true) {
33               String command = JOptionPane.showInputDialog(null, "Command?");
34               if (command == null) {
35                   command = "exit";
36               }//user clicked on Cancel
37               if (command.equalsIgnoreCase("blue")) {
38                   miro.setColor(Color.BLUE);
39                   miro.paint(dot);
40               } else if (command.equalsIgnoreCase("red")) {
41                   miro.setColor(Color.RED);
42                   miro.paint(dot);
43               } else if (command.equalsIgnoreCase("green")) {
44                   miro.setColor(Color.GREEN);
45                   miro.paint(dot);
46               } else if (command.equalsIgnoreCase("yellow")) {
47                   miro.setColor(Color.YELLOW);
48                   miro.paint(dot);
49               } else if (command.equalsIgnoreCase("random")) {
50                   miro.setColor(randomColor());
51                   miro.paint(dot);
52               } else if (command.equalsIgnoreCase("help")) {
53                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | GREEN | YELLOW | RANDOM | HELP | EXIT ");
54               } else if (command.equalsIgnoreCase("exit")) {
55                   miro.end();
56                   System.out.println("Thank you for viewing the dots ... ");
57                   break;
58               } else {
59                   JOptionPane.showMessageDialog(null, "Unrecognizable command: " + command.toUpperCase());
60               }
61           }
62   
63   
64       }
65   
66   
67   
68       private Color randomColor() {
69           int rv = (int)(Math.random()*256);
70           int gv = (int)(Math.random()*256);
71           int bv = (int)(Math.random()*256);
72           return new Color(rv,gv,bv);
73       }
74   
75   
76       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
77   
78       public Interpreter3() {
79           interpreter();
80       }
81   
82       public static void main(String[] args){
83           SwingUtilities.invokeLater(new Runnable(){
84               public void run(){
85                   new Interpreter3();
86               }
87   
88           });
89       }
90   }
91