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 the 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 Interpreter3 { 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 FRAM 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("random") ) { 46 miro.setColor(randomColor()); 47 miro.paint(dot); 48 } else if ( command.equalsIgnoreCase("help") ) { 49 JOptionPane.showMessageDialog(null, "Valid commands are: " + "RED | BLUE | GREEN | YELLOW | RANDOM | HELP | EXIT "); 50 } else if ( command.equalsIgnoreCase("exit") ) { 51 miro.end(); 52 System.out.println("Thank you for viewing the dots ..."); 53 break; 54 } else { 55 JOptionPane.showMessageDialog(null, "Unrecognizable command: " + command.toUpperCase()); 56 } 57 } 58 } 59 60 private static Color randomColor() { 61 int rv = (int)(Math.random()*256); 62 int gv = (int)(Math.random()*256); 63 int bv = (int)(Math.random()*256); 64 return new Color(rv,gv,bv); 65 } 66 67 //INFRASTRUCTURE FOR SOME SIMPLE PAINTING 68 69 public Interpreter3() { 70 interpreter(); 71 } 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 } 82 83