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     * -YELLOW paint yellow dot 
8     * -GREEN paint green dot 
9     * -RANDOM paint dor of random color 
10    * -HELP: show a list of the commands in a dialog message box 
11    * -EXIT: terminate the program 
12    */
13   package interpreters;
14   import java.awt.Color;
15   import javax.swing.JOptionPane;
16   import javax.swing.SwingUtilities;
17   import painter.SPainter;
18   import shapes.SCircle;
19   public class Interpreter3 {
20       private void interpreter() {
21           //CREATE OBJECTS TO THINK WITH
22           SPainter miro = new SPainter("Dot Thing", 400,400);
23           miro.setScreenLocation(0,0);
24           SCircle dot = new SCircle(180);
25           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
26           while (true) {
27               String command = JOptionPane.showInputDialog(null,"Command?");
28               if (command == null){command = "exit";} //user clicked on Cancel
29               if (command.equalsIgnoreCase("blue")){
30                   miro.setColor(Color.BLUE);
31                   miro.paint(dot);
32               } else if (command.equalsIgnoreCase("red")) {
33                   miro.setColor(Color.RED);
34                   miro.paint(dot);
35               } else if (command.equalsIgnoreCase("green")) {
36                   miro.setColor(Color.GREEN);
37                   miro.paint(dot);
38               } else if (command.equalsIgnoreCase("yellow")) {
39                   miro.setColor(Color.YELLOW);
40                   miro.paint(dot);
41               } else if (command.equalsIgnoreCase("random")) {
42                   miro.setColor(randomColor());
43                   miro.paint(dot);
44               } else if (command.equalsIgnoreCase("help")) {
45                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | GREEN | YELLOW | RANDOM | HELP | EXIT");
46               } else if (command.equalsIgnoreCase("exit")) {
47                   miro.end();
48                   System.out.println("Thank you for viewing the dots ...");
49                   break;
50               } else {
51                   JOptionPane.showMessageDialog(null, "Unrecognizable command:" + command.toUpperCase());
52               }
53           }
54       }
55   
56       private Color randomColor() {
57           int rv = (int)(Math.random()*256);
58           int gv = (int)(Math.random()*256);
59           int bv = (int)(Math.random()*256);
60           return new Color(rv, gv, bv);
61   
62       }
63   
64       public Interpreter3() {
65           interpreter();
66       }
67       public static void main(String[] args) {
68           SwingUtilities.invokeLater(new Runnable() {
69               public void run() {
70                   new Interpreter3();
71               }
72           });
73       }
74   }