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     * -BLUED: 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 random colored dot 
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 java.awt.Color;
17   import javax.print.attribute.standard.JobMessageFromOperator;
18   import javax.swing.JOptionPane;
19   import javax.swing.SwingUtilities;
20   import painter.SPainter;
21   import shapes.SCircle;
22   
23   public class Interpreter3 {
24   
25       private void interpreter() {
26   
27           //CREATE OBJECTS TO THINK WITH
28           SPainter miro = new SPainter("Dot Thing",400,400);
29           miro.setScreenLocation(0,0);
30           SCircle dot = new SCircle(180);
31   
32           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
33           while ( true ) {
34               String command = JOptionPane.showInputDialog(null,"Command?");
35               if ( command == null ) { command = "exit"; } // user clicked on Cancel
36               if ( command.equalsIgnoreCase("blue")) {
37                   miro.setColor(Color.BLUE);
38                   miro.paint(dot);
39               } else if ( command.equalsIgnoreCase("red")) {
40                   miro.setColor(Color.RED);
41                   miro.paint(dot);
42               } else if ( command.equalsIgnoreCase("green")) {
43                   miro.setColor(Color.GREEN);
44                   miro.paint(dot);
45               } else if ( command.equalsIgnoreCase("yellow")) {
46                   miro.setColor(Color.YELLOW);
47                   miro.paint(dot);
48               } else if ( command.equalsIgnoreCase("random")) {
49                   miro.setColor(randomColor());
50                   miro.paint(dot);
51               } else if ( command.equalsIgnoreCase("help")) {
52                   JOptionPane.showMessageDialog(null,"Valid commands are: " + "RED | BLUE | GREEN | YELLOW | RANDOM | HELP | EXIT ");
53               }else if ( command.equalsIgnoreCase("exit")) {
54                   miro.end();
55                   System.out.println("Thank you for viewing the dots ...");
56                   break;
57               }else{
58                   JOptionPane.showMessageDialog(null,"Unrecognizable command " + 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   
72       public Interpreter3() {
73           interpreter();
74       }
75   
76       public static void main(String[] args) {
77           SwingUtilities.invokeLater(new Runnable() {
78               public void run() {
79                   new Interpreter3();
80               }
81           });
82       }
83   }