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 green dot 
8    -YELLOW: paint yellow dot 
9    -RANDOM: paints a randomly colored dot 
10   -HELP show a list of the commands in a dialog message box 
11   -EXIT: terminate the program 
12   */
13   
14   
15   package interpreters;
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           //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 INPUT 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("green")) {
41                   miro.setColor(Color.green);
42                   miro.paint(dot);
43               }else if (command.equalsIgnoreCase("yellow")) {
44                   miro.setColor(Color.yellow);
45                   miro.paint(dot);
46               }else if ( command.equalsIgnoreCase("random") ) {
47                   miro.setColor(randomColor());
48                   miro.paint(dot);
49               }else if (command.equalsIgnoreCase("help")) {
50                   JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | YELLOW | GREEN | RANDOM | HELP | EXIT");
51               }else if (command.equalsIgnoreCase("exit")) {
52                   miro.end();
53                   System.out.println("Thank you for viewing the dots ...");
54                   break;
55               } else {
56                   JOptionPane.showMessageDialog(null, "Unrecognizable command: " + command.toUpperCase());
57               }
58           }
59       }
60   
61   
62           private static 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   
70       //INFRASTRUCTURE FOR SOME SIMPLE PAINTING
71       public Interpreter3(){
72           interpreter();
73       }
74   
75       public static void main(String[] args) {
76           SwingUtilities.invokeLater(new Runnable(){
77               public void run() {
78                   new Interpreter3();
79               }
80           });
81       }
82   }
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