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: paints a random colored dot 
10   - Help: show a list of the commands in a dialogue message box 
11   - EXIT: terminate the program 
12    */
13   package interpreters;
14   
15   import painter.SPainter;
16   import shapes.SCircle;
17   
18   import javax.swing.*;
19   import java.awt.*;
20   
21   public class Interpreter3 {
22       private void interpreter() {
23           //CREATE OBJECTS 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) {
32                   command = "exit";
33               } // 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("random")){
47                   miro.setColor(randomColor());
48                   miro.paint(dot);
49               }else if (command.equalsIgnoreCase("help")){
50                   JOptionPane.showMessageDialog(null,"Valid commands are: "
51                           + "RED BlUE GREEN YELLOW  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   
64       private Color randomColor() {
65           int rv =(int)(Math.random()*256);
66           int gv =(int)(Math.random()*256);
67           int bv =(int)(Math.random()*256);
68           return new Color(rv, gv, bv);
69       }
70   
71       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
72       public Interpreter3() {
73           interpreter();
74       }
75       public static void main(String[] args) {
76           SwingUtilities.invokeLater(new Runnable() {
77               public void run() {
78                   new Interpreter3();
79               }
80           });
81       }
82   }
83