Removed use of Refreshable and replaced with several methods which update the GUI using SwingUtilities.invokeLater().

While not as clean as using ChangeListener, it completely decouples the Model and View aspects,
and also avoids the need to manually paint() a hierarchy of components (a task best handled by Swing/AWT).

src/model/Referee.java

@@ -1,12 +1,10 @@
 package model;
 
-import javax.security.auth.Refreshable;
-
 import model.Board.TileColor;
 import model.comController.RandomComController;
 import controller.PlayerController;
 
-public class Referee implements Refreshable {
+public class Referee {
 
 	public enum Message {
 		COM_TURN {
@@ -42,7 +40,6 @@ public class Referee implements Refreshable {
 	private final PlayerController pc = new PlayerController();
 
 	private boolean playerTurn;
-	private boolean refresh = true;
 	private int score = 0;
 
 	public Referee() {
@@ -52,28 +49,16 @@ public class Referee implements Refreshable {
 	}
 
 	public void doSomething() {
-		Move mv;
-
 		if (playerTurn && pc.isReady()) {
-			mv = pc.getMove();
-
+			Move mv = pc.getMove();
 			if (board.getTile(mv.getCell().r, mv.getCell().c) == TileColor.NONE) {
 				playToken(pc.getMove());
-
-				refresh = true;
-			}
-
-			else {
+			} else {
 				pc.denyMove();
 			}
-		}
-
-		else if (!playerTurn) {
-			mv = cc.getMove();
-
+		} else if (!playerTurn) {
+			Move mv = cc.getMove();
 			playToken(mv);
-
-			refresh = true;
 		}
 	}
 
@@ -107,11 +92,6 @@ public class Referee implements Refreshable {
 		return board.getTile(r, c);
 	}
 
-	@Override
-	public boolean isCurrent() {
-		return !refresh;
-	}
-
 	public boolean isOver() {
 		for (int r = 0; r < Board.NUM_ROWS; r++) {
 			for (int c = 0; c < Board.NUM_COLS; c++) {
@@ -135,11 +115,6 @@ public class Referee implements Refreshable {
 		incrementTurn();
 	}
 
-	@Override
-	public void refresh() {
-		refresh = false;
-	}
-
 	private void incrementScore() {
 		score++;
 	}