1    package interpreters;
2    
3    import java.awt.Color;
4    import javax.swing.JOptionPane;
5    import javax.swing.SwingUtilities;
6    import painter.SPainter;
7    import shapes.SCircle;
8    
9    public class Interpreter1 {
10   
11   
12       /* 
13        * This interpreter is intended to paint different colored dots in a window. 
14        * 
15        * The commands that the interpreter can recognize and respond to are: 
16        *  - BLUE: paint a blue dot 
17        *  - RED: paint a red dot 
18        *  - HELP: show a list of the commands in a dialog message box 
19        *  - EXIT: terminate the program 
20        */
21   
22       private void interpreter() {
23           // CREATE OBJECTS TO THINK 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 IMPUT DIALOG BOX AND INTERPRET IT
29           while ( true ) {
30               String command = JOptionPane.showInputDialog(null, "Command?");
31               if (command == null ) { command = "exit"; } // user clicked on Cancel
32               if ( command.equalsIgnoreCase("blue") ) {
33                   miro.setColor(Color.BLUE);
34                   miro.paint(dot);
35               } else if ( command.equalsIgnoreCase("red") ) {
36                   miro.setColor(Color.RED);
37                   miro.paint(dot);
38               } else if (command.equalsIgnoreCase("help") ) {
39                   JOptionPane.showMessageDialog(null, "Valid commands are: "
40                           + "RED | BLUE | HELP | EXIT ");
41               } else if ( command.equalsIgnoreCase("exit") ) {
42                   miro.end();
43                   System.out.println("Thank you for viewing the dots . . . ");
44                   break;
45               } else {
46                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
47                   + command.toUpperCase());
48   
49               }
50           }
51       }
52   
53       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
54   
55       public Interpreter1() {
56           interpreter();
57       }
58   
59       public static void main(String[] args) {
60           SwingUtilities.invokeLater(new Runnable() {
61               public void run() {
62                   new Interpreter1();
63               }
64           });
65   
66       }
67   }
68   
69