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     *  - GREEN: paint a green dot 
8     *  - YELLOW: paint a yellow dot 
9     *  - HELP: show a list of commands in a dialog message box 
10    *  - EXIT: terminate the program 
11    */
12   package interpreters;
13   
14   import java.awt.Color;
15   import javax.swing.JOptionPane;
16   import javax.swing.SwingUtilities;
17   import painter.SPainter;
18   import shapes.SCircle;
19   
20   public class Interpreter2 {
21   
22       private void interpreter() {
23   
24           //CREATE OBJECTS TO THINK WITH
25           SPainter miro = new SPainter("Dot Thing", 400,400);
26           miro.setScreenLocation(0,0);
27           SCircle dot = new SCircle(180);
28   
29           //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT
30           while (true) {
31               String command = JOptionPane.showInputDialog(null,"Command?");
32               if ( command == null) { command = "exit"; } // user clicked on Cancel
33               if ( command.equalsIgnoreCase("blue") ) {
34                   miro.setColor(Color.BLUE);
35                   miro.paint(dot);
36               } else if ( command.equalsIgnoreCase("red") ) {
37                   miro.setColor(Color.RED);
38                   miro.paint(dot);
39               } else if ( command.equalsIgnoreCase("green") ) {
40                   miro.setColor(Color.GREEN);
41                   miro.paint(dot);
42               } else if ( command.equalsIgnoreCase("yellow") ) {
43                   miro.setColor(Color.YELLOW);
44                   miro.paint(dot);
45               } else if ( command.equalsIgnoreCase("help") ) {
46                   JOptionPane.showMessageDialog(null, "Valid commands are:" + "BLUE | RED | GREEN| YELLOW | HELP | EXIT");
47               } else if ( command.equalsIgnoreCase("exit") ) {
48                   miro.end();
49                   System.out.println("Thank you for viewing the dots ...");
50                   break;
51               } else {
52                   JOptionPane.showMessageDialog(null, "Unrecognizable command: " + "command.toUperCase()");
53                   }
54               }
55           }
56       // INFRASTRUCTURE FOR SOME SIMPLE PAINTING
57   
58       public Interpreter2() {
59           interpreter();
60       }
61       public static void main(String[] args) {
62           SwingUtilities.invokeLater(new Runnable() {
63               public void run() {
64                   new Interpreter2();
65               }
66           });
67       }
68   }
69   
70