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     * -RANDOM: paint a random colored dot 
10    * -HELP: show a list of commands in a dialog message box 
11    * -EXIT: terminate the program 
12    */
13   
14   package interpreters;
15   
16   import java.awt.Color;
17   import javax.swing.JOptionPane;
18   import javax.swing.SwingUtilities;
19   import painter.SPainter;
20   import shapes.SCircle;
21   
22   public class Interpreter3 {
23   
24       private void interpreter(){
25   
26           //Create objects to think with
27           SPainter miro= new SPainter("Dot Thing",400,400);
28           miro.setScreenLocation(0,0);
29           SCircle dot = new SCircle(180);
30   
31           //Repeatedly take a command from an input dialog box and interpret it
32           while (true) {
33               String command = JOptionPane.showInputDialog(null, "Command?");
34               if (command == null) {command = "exit";} //user clicked on cancel
35               if (command.equalsIgnoreCase("blue")){
36                   miro.setColor(Color.BLUE);
37                   miro.paint(dot);
38               } else if (command.equalsIgnoreCase("red")) {
39                   miro.setColor(Color.RED);
40                   miro.paint(dot);
41               } else if (command.equalsIgnoreCase("help")) {
42                   JOptionPane.showMessageDialog(null,"Valid commands are:"+"RED | BLUE | GREEN | YELLOW | RANDOM | HELP | EXIT");
43               } else if (command.equalsIgnoreCase("exit")){
44                   miro.end();
45                   System.out.println("Thank you for viewing the dots ...");
46                   break;
47               } else if (command.equalsIgnoreCase("green")){
48                   miro.setColor(Color.GREEN);
49                   miro.paint(dot);
50               } else if (command.equalsIgnoreCase("yellow")) {
51                   miro.setColor(Color.YELLOW);
52                   miro.paint(dot);
53               } else if (command.equalsIgnoreCase("random")) {
54                   miro.setColor(randomColor());
55                   miro.paint(dot);
56               } else {
57                   JOptionPane.showMessageDialog(null, "Unrecognizable command: "+ command.toUpperCase());
58               }
59           }
60       }
61   
62       private Color randomColor() {
63           int rv = (int)(Math.random()*256);
64           int gv = (int)(Math.random()*256);
65           int bv = (int)(Math.random()*256);
66           return new Color(rv,gv,bv);
67       }
68   
69       //infrastructure for some simple painting]
70       public Interpreter3(){
71           interpreter();
72       }
73       public static void main(String[] args){
74           SwingUtilities.invokeLater(new Runnable(){
75               public void run(){
76                   new Interpreter3();
77               }
78           });
79       }
80   }
81