Example usage for java.awt.event ItemEvent getItemSelectable

Introduction

In this page you can find the example usage for java.awt.event ItemEvent getItemSelectable.

Prototype

public ItemSelectable getItemSelectable() 

Source Link

Document

Returns the originator of the event.

Usage

From source file:richtercloud.reflection.form.builder.components.AmountMoneyPanel.java

/**
 * Creates a new AmountMoneyPanel with {@link #DEFAULT_CURRENCIES} and
 * {@code additionalCurrencies}./*from   www.  j  a va  2s .  c  o  m*/
 * @param amountMoneyCurrencyStorage
 * @param amountMoneyUsageStatisticsStorage
 * @param amountMoneyExchangeRateRetriever
 * @param messageHandler
 * @throws richtercloud.reflection.form.builder.components.AmountMoneyCurrencyStorageException
 */
public AmountMoneyPanel(AmountMoneyCurrencyStorage amountMoneyCurrencyStorage,
        AmountMoneyUsageStatisticsStorage amountMoneyUsageStatisticsStorage,
        AmountMoneyExchangeRateRetriever amountMoneyExchangeRateRetriever, MessageHandler messageHandler)
        throws AmountMoneyCurrencyStorageException {
    this.messageHandler = messageHandler;
    Set<Currency> exchangeRateRetrieverSupportedCurrencies = amountMoneyExchangeRateRetriever
            .getSupportedCurrencies();
    for (Currency currency : amountMoneyCurrencyStorage.getCurrencies()) {
        if (!exchangeRateRetrieverSupportedCurrencies.contains(currency)) {
            try {
                currency.getExchangeRate();
            } catch (ConversionException ex) {
                throw new IllegalArgumentException(String.format(
                        "Currency %s isn't supported by exchange rate retriever and doesn't have an exchange rate set",
                        currency));
            }
        }
        currencyComboBoxModel.addElement(currency);
    }
    initComponents();
    ((SpinnerNumberModel) amountIntegerSpinner.getModel())
            .setMaximum(((long) (Double.MAX_VALUE * MINIMAL_STEP)));
    //cast to long is necessary to make ChangeListener of
    //amountIntegerSpinner be notified
    this.amountIntegerSpinner.addChangeListener(new ChangeListener() {
        @Override
        public void stateChanged(ChangeEvent e) {
            for (AmountMoneyPanelUpdateListener updateListener : AmountMoneyPanel.this.updateListeners) {
                updateListener.onUpdate(new AmountMoneyPanelUpdateEvent(getValue()));
            }
        }
    });
    this.amountDecimalSpinner.addChangeListener(new ChangeListener() {
        @Override
        public void stateChanged(ChangeEvent e) {
            for (AmountMoneyPanelUpdateListener updateListener : AmountMoneyPanel.this.updateListeners) {
                updateListener.onUpdate(new AmountMoneyPanelUpdateEvent(getValue()));
            }
        }
    });
    this.currencyComboBox.addItemListener(new ItemListener() {
        @Override
        public void itemStateChanged(ItemEvent itemEvent) {
            //convert after currency change (not necessary, but useful)
            Currency oldCurrency = (Currency) itemEvent.getItem();
            Currency newCurrency = (Currency) itemEvent.getItemSelectable().getSelectedObjects()[0];
            double newAmount;
            try {
                newAmount = oldCurrency.getConverterTo(newCurrency).convert(getAmount());
            } catch (ConversionException ex) {
                try {
                    //if the exchange rate isn't set
                    AmountMoneyPanel.this.amountMoneyExchangeRateRetriever.retrieveExchangeRate(newCurrency);
                    AmountMoneyPanel.this.amountMoneyExchangeRateRetriever.retrieveExchangeRate(oldCurrency);
                    newAmount = oldCurrency.getConverterTo(newCurrency).convert(getAmount());
                } catch (AmountMoneyCurrencyStorageException amountMoneyCurrencyStorageException) {
                    throw new RuntimeException(amountMoneyCurrencyStorageException);
                }
            }
            AmountMoneyPanel.this.amountIntegerSpinner.setValue((int) newAmount);
            BigDecimal bd = new BigDecimal(newAmount * 100);
            bd = bd.setScale(0, //newScale
                    RoundingMode.HALF_UP //the rounding mode "taught in school"
            );
            AmountMoneyPanel.this.amountDecimalSpinner.setValue(bd.intValue() % 100);
            //notify registered update listeners
            for (AmountMoneyPanelUpdateListener updateListener : AmountMoneyPanel.this.updateListeners) {
                updateListener.onUpdate(new AmountMoneyPanelUpdateEvent(getValue()));
            }
        }
    });
    this.amountMoneyCurrencyStorage = amountMoneyCurrencyStorage;
    this.amountMoneyUsageStatisticsStorage = amountMoneyUsageStatisticsStorage;
    this.amountMoneyExchangeRateRetriever = amountMoneyExchangeRateRetriever;
}

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