@Override
	public void actionPerformed(ActionEvent e) {
		int decision = JOptionPane.showConfirmDialog(
				controller.getMainJFrame(), 
				"Do you really want to exit?", 
				"Exit the application", 
				JOptionPane.YES_NO_OPTION
		);
		if ( decision == JOptionPane.YES_OPTION ) {
			controller.getMainJFrame().dispose();
		}
	}