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 Interpreter2 {
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        *  - YELLOW: paints a yellow dot 
19        *  - GREEN: paints a green dot 
20        *  - HELP: show a list of the commands in a dialog message box 
21        *  - EXIT: terminate the program 
22        */
23   
24       private void interpreter() {
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 IMPUT 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("yellow") ) {
41                   miro.setColor(Color.YELLOW);
42                   miro.paint(dot);
43               } else if ( command.equalsIgnoreCase("green") ) {
44                   miro.setColor(Color.GREEN);
45                   miro.paint(dot);
46               } else if (command.equalsIgnoreCase("help") ) {
47                   JOptionPane.showMessageDialog(null, "Valid commands are: "
48                           + "RED | BLUE | YELLOW | GREEN | HELP | EXIT ");
49               } else if ( command.equalsIgnoreCase("exit") ) {
50                   miro.end();
51                   System.out.println("Thank you for viewing the dots . . . ");
52                   break;
53               } else {
54                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "
55                           + command.toUpperCase());
56   
57               }
58           }
59       }
60   
61       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
62   
63       public Interpreter2() {
64           interpreter();
65       }
66   
67       public static void main(String[] args) {
68           SwingUtilities.invokeLater(new Runnable() {
69               public void run() {
70                   new Interpreter2();
71               }
72           });
73   
74       }
75   }
76   
77