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 commands in a dialog message box 
8    * -EXIT: terminate the program 
9     */
10   
11   package interpreters;
12   
13   import java.awt.Color;
14   import javax.swing.JOptionPane;
15   import javax.swing.SwingUtilities;
16   import painter.SPainter;
17   import shapes.SCircle;
18   
19   public class Interpreter1 {
20   
21       private void interpreter(){
22   
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 input 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:"+"RED | BLUE | HELP | EXIT");
40               } else if (command.equalsIgnoreCase("exit")){
41                   miro.end();
42                   System.out.println("Thank you for viewing the dots ...");
43                   break;
44               } else {
45                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "+ command.toUpperCase());
46               }
47           }
48       }
49   
50       //infrastructure for some simple painting]
51       public Interpreter1(){
52           interpreter();
53       }
54       public static void main(String[] args){
55           SwingUtilities.invokeLater(new Runnable(){
56               public void run(){
57                   new Interpreter1();
58               }
59           });
60       }
61   }
62