1    /* 
2     *This interpreter is intended tp 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     * -HELP: show a list of the commands in a dialog message box 
8     * -EXIT: terminate the program 
9     */
10   
11   package interpreters;
12   
13   import painter.SPainter;
14   import shapes.SCircle;
15   
16   import javax.swing.*;
17   import java.awt.*;
18   
19   public class Interpreter3 {
20   
21   
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("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/ HELP / EXIT/ RANDOM ") ;
52                   miro.end();
53                   System.out.println("Thank you for viewing the dots...");
54                   break;
55               }else{
56                   JOptionPane.showMessageDialog(null, "Unrecognizable command:"
57                           + command.toUpperCase());
58               }
59           }
60       }
61   
62       private Color randomColor() {
63           int rv = (int)(Math.random()*256);
64           int gv = (int)(Math.random()*256);
65           int bv = (int)(Math.random()*256);
66           return new Color(rv,gv,bv);
67       }
68   // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
69   
70       public Interpreter3() {
71           interpreter();
72       }
73   
74       public static void main(String[] args) {
75           SwingUtilities.invokeLater(new Runnable() {
76               public void run() {
77                   new interpreters.Interpreter3();
78               }
79           });
80       }
81   }
82   
83   
84   
85   
86   
87   
88