private void updateBuyOption() {
		if(model.getBuyOptionState() == Model.BuyOptionState.DEACTIVATED) {
			buyOption.setEnabled(false);
		} else {
			buyOption.setEnabled(true);
		}

		switch(model.getBuyOptionState()) {
			case PURCHASABLE:
				buyOptionText = "Feld kaufen (" + model.getPurchasablePrice() + ")";
				break;
			case BUYHOUSE:
				buyOptionText = "Haus kaufen (" + model.getStreetUpgrade() + ")";
				break;
			case BUYHOTEL:
				buyOptionText = "Hotel kaufen (" + model.getStreetUpgrade() + ")";
				break;
			case DEACTIVATED:
				buyOptionText = "Nichts zu kaufen";
				break;
		}

		buyOption.setText(buyOptionText);
	}