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     *  - HELP: show a list of the commands in a dialog message box 
8     *  - EXIT: terminate the program 
9     */
10   
11   package interpreters;
12   
13   import painter.SPainter;
14   import shapes.SCircle;
15   
16   import javax.swing.*;
17   import java.awt.*;
18   
19   
20   public class Interpreter1 {
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("help") ) {
40                   JOptionPane.showMessageDialog(null, "Valid commands are: "
41                           + "RED | BLUE | HELP | EXIT ");
42               } else if ( command.equalsIgnoreCase("exit") ) {
43                   miro.end();
44                   System.out.println("Thank you for viewing the dots ...");
45                   break;
46               } else {
47                   JOptionPane.showMessageDialog(null, "Unrecognizable command: " + command.toUpperCase());
48               }
49           }
50       }
51   
52       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
53   
54       public Interpreter1() {
55           interpreter();
56       }
57   
58       public static void main(String[] args) {
59           SwingUtilities.invokeLater(new Runnable() {
60               public void run() {
61                   new Interpreter1();
62               }
63           });
64       }
65   
66   }
67