tictactoe: refactored code to update gui

src/main/java/de/tims/tictactoe/GameLogic.java

@@ -133,29 +133,32 @@ public class GameLogic implements ActionListener {
 	public JButton getGUIField(int column, int row) {
 		return this.fields[column][row];
 	}
+	
+	private void updateGUI() {	
+		if (this.checkEndOfGame()) {
+			for (int i = 0; i < this.fields.length; i++) {
+				for (int j = 0; j < this.fields.length; j++) {
+					this.fields[i][j].setEnabled(false);
+				}
+			}
+			JOptionPane.showMessageDialog(contentPanel, "Spieler " + this.currentPlayer  + " hat gewonnen.");
+			System.exit(0);
+		}
+		this.switchPlayer();
+	}
 
 	@Override
 	public void actionPerformed(ActionEvent e) {
 		for (int i = 0; i < this.fields.length; i++) {
 			for (int j = 0; j < this.fields[0].length; j++) {
-				if (e.getSource() == this.fields[i][j]) {
+				if (e.getSource() == this.fields[i][j]) {		
 					this.setField(i, j, currentPlayer);
 					this.fields[i][j].setText("" + this.getCurrentPlayer());
-					
-					if (this.checkEndOfGame()) {
-						JOptionPane.showMessageDialog(contentPanel, "Spieler " + this.currentPlayer  + " hat gewonnen.");
-						for (int k = 0; k < this.fields.length; k++) {
-							for (int l = 0; l < this.fields.length; l++) {
-								this.fields[k][l].setEnabled(false);
-							}
-						}
-						System.exit(0);
-					}
-					this.switchPlayer();
-					
+					updateGUI();	
 				}
 			}
 		}
 	}
+
 	
 }