protected Converter createConverter() throws JspException {
FacesContext context = FacesContext.getCurrentInstance();
ELContext elctx = context.getELContext();
if (binding != null) {
Converter boundConverter = (NumberConverter) binding.getValue(elctx);
if (boundConverter != null) return boundConverter;
}
NumberConverter converter = new NumberConverter();
if (currencyCode != null) converter.setCurrencyCode((String) currencyCode.getValue(elctx));
if (currencySymbol != null)
converter.setCurrencySymbol((String) currencySymbol.getValue(elctx));
if (groupingUsed != null) converter.setGroupingUsed((Boolean) groupingUsed.getValue(elctx));
if (integerOnly != null) converter.setIntegerOnly((Boolean) integerOnly.getValue(elctx));
if (maxFractionDigits != null)
converter.setMaxFractionDigits((Integer) maxFractionDigits.getValue(elctx));
if (minFractionDigits != null)
converter.setMinFractionDigits((Integer) minFractionDigits.getValue(elctx));
if (minIntegerDigits != null)
converter.setMinIntegerDigits((Integer) minIntegerDigits.getValue(elctx));
if (pattern != null) converter.setPattern((String) pattern.getValue(elctx));
if (type != null) converter.setType((String) type.getValue(elctx));
Locale loc = null;
if (locale != null) loc = FacesUtils.getLocaleFromExpression(context, locale);
if (loc == null) loc = context.getViewRoot().getLocale();
converter.setLocale(loc);
if (binding != null) binding.setValue(elctx, converter);
return converter;
}
// Create and configure a NumberConverter
protected NumberConverter createNumberConverter() {
NumberConverter nc = new NumberConverter();
nc.setCurrencyCode("USD");
nc.setCurrencySymbol("$");
nc.setGroupingUsed(false);
nc.setIntegerOnly(true);
nc.setMaxFractionDigits(2);
nc.setMaxIntegerDigits(10);
nc.setMinFractionDigits(2);
nc.setMinIntegerDigits(5);
nc.setType("currency");
return (nc);
}
public Converter getConverter(ValueHolder valueHolder, Map<String, String> attributes) {
// Use existing Converter (if any)
Converter converter = valueHolder.getConverter();
if (converter != null) {
return converter;
}
// Create from id
FacesContext context = FacesContext.getCurrentInstance();
String converterId = attributes.get(FACES_CONVERTER);
if (converterId != null) {
converter = context.getApplication().createConverter(converterId);
} else if (valueHolder instanceof UISelectOne || valueHolder instanceof UISelectMany) {
// Create from parameterized type (eg. a Date converter for List<Date>)
String parameterizedType = WidgetBuilderUtils.getComponentType(attributes);
if (parameterizedType != null) {
Class<?> parameterizedClass = ClassUtils.niceForName(parameterizedType);
// The parameterized type might be null, or might not be concrete
// enough to be instantiatable (eg. List<? extends Foo>)
if (parameterizedClass != null) {
converter = context.getApplication().createConverter(parameterizedClass);
}
}
} else {
// Create implicit converters
//
// JSF does not appear to implicitly hook up DateTimeConverters without either an
// explicit f:convertDateTime tag or a registered java.util.Date converter. Adding one
// fixes both POSTback and display of read-only dates (otherwise JSF uses Date.toString)
//
// JSF *does* appear to implicitly hook up NumberConverters.
String type = attributes.get(TYPE);
if (type != null) {
Class<?> clazz = ClassUtils.niceForName(type);
if (clazz != null) {
if (clazz.isAssignableFrom(Date.class)) {
converter = getDateTimeConverter(converter);
}
}
}
}
// Support for DateTimeConverter
if (attributes.containsKey(DATE_STYLE)) {
converter = getDateTimeConverter(converter);
((DateTimeConverter) converter).setDateStyle(attributes.get(DATE_STYLE));
}
if (attributes.containsKey(DATETIME_PATTERN)) {
converter = getDateTimeConverter(converter);
((DateTimeConverter) converter).setPattern(attributes.get(DATETIME_PATTERN));
}
if (attributes.containsKey(TIME_STYLE)) {
converter = getDateTimeConverter(converter);
((DateTimeConverter) converter).setTimeStyle(attributes.get(TIME_STYLE));
}
if (attributes.containsKey(TIME_ZONE)) {
converter = getDateTimeConverter(converter);
((DateTimeConverter) converter).setTimeZone(TimeZone.getTimeZone(attributes.get(TIME_ZONE)));
}
if (attributes.containsKey(DATETIME_TYPE)) {
converter = getDateTimeConverter(converter);
((DateTimeConverter) converter).setType(attributes.get(DATETIME_TYPE));
}
// Support for NumberConverter
if (attributes.containsKey(CURRENCY_CODE)) {
converter = getNumberConverter(converter);
((NumberConverter) converter).setCurrencyCode(attributes.get(CURRENCY_CODE));
}
if (attributes.containsKey(CURRENCY_SYMBOL)) {
converter = getNumberConverter(converter);
((NumberConverter) converter).setCurrencySymbol(attributes.get(CURRENCY_SYMBOL));
}
if (attributes.containsKey(NUMBER_USES_GROUPING_SEPARATORS)) {
converter = getNumberConverter(converter);
((NumberConverter) converter)
.setGroupingUsed(Boolean.parseBoolean(attributes.get(NUMBER_USES_GROUPING_SEPARATORS)));
}
if (attributes.containsKey(MINIMUM_INTEGER_DIGITS)) {
converter = getNumberConverter(converter);
((NumberConverter) converter)
.setMinIntegerDigits(Integer.parseInt(attributes.get(MINIMUM_INTEGER_DIGITS)));
}
if (attributes.containsKey(MAXIMUM_INTEGER_DIGITS)) {
converter = getNumberConverter(converter);
((NumberConverter) converter)
.setMaxIntegerDigits(Integer.parseInt(attributes.get(MAXIMUM_INTEGER_DIGITS)));
}
if (attributes.containsKey(MINIMUM_FRACTIONAL_DIGITS)) {
converter = getNumberConverter(converter);
((NumberConverter) converter)
.setMinFractionDigits(Integer.parseInt(attributes.get(MINIMUM_FRACTIONAL_DIGITS)));
}
if (attributes.containsKey(MAXIMUM_FRACTIONAL_DIGITS)) {
converter = getNumberConverter(converter);
((NumberConverter) converter)
.setMaxFractionDigits(Integer.parseInt(attributes.get(MAXIMUM_FRACTIONAL_DIGITS)));
}
if (attributes.containsKey(NUMBER_PATTERN)) {
converter = getNumberConverter(converter);
((NumberConverter) converter).setPattern(attributes.get(NUMBER_PATTERN));
}
if (attributes.containsKey(NUMBER_TYPE)) {
converter = getNumberConverter(converter);
((NumberConverter) converter).setType(attributes.get(NUMBER_TYPE));
}
// Locale (applies to both DateTimeConverter and NumberConverter)
if (attributes.containsKey(LOCALE)) {
if (converter instanceof NumberConverter) {
((NumberConverter) converter).setLocale(new Locale(attributes.get(LOCALE)));
} else {
converter = getDateTimeConverter(converter);
((DateTimeConverter) converter).setLocale(new Locale(attributes.get(LOCALE)));
}
}
// Return it
return converter;
}