@Override public void startWith(MonetaryUnit fromUnit, MonetaryUnit toUnit, CurrencyPair pair) { this.fromUnit = fromUnit; this.toUnit = toUnit; this.pair = pair; view.setPresenter(this); view.reset(pair == null); if (pair != null) { view.getRateProperty().set(pair.getExchangeRate()); view.getDateProperty().set(pair.getCreatedOn()); } else { view.getRateProperty().set(CurrencyPair.DEFAULT_EXCHANGE_RATE); view.getDateProperty().set(new Date()); } view.focus(); }