protected void resetComponent(UIComponent comp, boolean recursive) {
if (comp == null) {
return;
}
if (comp instanceof ResettableComponent) {
((ResettableComponent) comp).resetCachedModel();
} else {
if (comp instanceof EditableValueHolder) {
// reset submitted value
((EditableValueHolder) comp).setSubmittedValue(null);
}
if (comp instanceof ValueHolder) {
// reset local value, only if there's a value expression
// binding
ValueExpression ve = comp.getValueExpression("value");
if (ve != null) {
ValueHolder vo = (ValueHolder) comp;
vo.setValue(null);
if (comp instanceof EditableValueHolder) {
((EditableValueHolder) comp).setLocalValueSet(false);
}
}
}
}
if (recursive) {
List<UIComponent> children = comp.getChildren();
if (children != null && !children.isEmpty()) {
for (UIComponent child : children) {
resetComponent(child, recursive);
}
}
}
}
public void applyAttachedObject(FacesContext context, UIComponent parent) {
FaceletContext ctx =
(FaceletContext) context.getAttributes().get(FaceletContext.FACELET_CONTEXT_KEY);
// cast to a ValueHolder
ValueHolder vh = (ValueHolder) parent;
ValueExpression ve = null;
Converter c = null;
if (this.binding != null) {
ve = this.binding.getValueExpression(ctx, Converter.class);
c = (Converter) ve.getValue(ctx);
}
if (c == null) {
c = this.createConverter(ctx);
if (ve != null) {
ve.setValue(ctx, c);
}
}
if (c == null) {
throw new TagException(this.tag, "No Converter was created");
}
this.setAttributes(ctx, c);
vh.setConverter(c);
Object lv = vh.getLocalValue();
FacesContext faces = ctx.getFacesContext();
if (lv instanceof String) {
vh.setValue(c.getAsObject(faces, parent, (String) lv));
}
}
/**
* Algorithm works as follows; - If it's an input component, submitted value is checked first
* since it'd be the value to be used in case validation errors terminates jsf lifecycle - Finally
* the value of the component is retrieved from backing bean and if there's a converter, converted
* value is returned
*
* <p>- If the component is not a value holder, toString of component is used to support Facelets
* UIInstructions.
*
* @param facesContext FacesContext instance
* @param component UIComponent instance whose value will be returned
* @return End text
*/
public static String getStringValueToRender(FacesContext facesContext, UIComponent component) {
if (component instanceof ValueHolder) {
if (component instanceof EditableValueHolder) {
Object submittedValue = ((EditableValueHolder) component).getSubmittedValue();
if (submittedValue != null) {
return submittedValue.toString();
}
}
ValueHolder valueHolder = (ValueHolder) component;
Object value = valueHolder.getValue();
if (value == null) return "";
// first ask the converter
if (valueHolder.getConverter() != null) {
return valueHolder.getConverter().getAsString(facesContext, component, value);
}
// Try to guess
else {
ValueExpression expr = component.getValueExpression("value");
if (expr != null) {
Class<?> valueType = expr.getType(facesContext.getELContext());
if (valueType != null) {
Converter converterForType = facesContext.getApplication().createConverter(valueType);
if (converterForType != null)
return converterForType.getAsString(facesContext, component, value);
}
}
}
// No converter found just return the value as string
return value.toString();
} else {
// This would get the plain texts on UIInstructions when using Facelets
String value = component.toString();
if (value != null) return value.trim();
else return "";
}
}
/**
* Resolves the end text to render by using a specified value
*
* @param facesContext FacesContext instance
* @param component UIComponent instance whose value will be returned
* @return End text
*/
public static String getStringValueToRender(
FacesContext facesContext, UIComponent component, Object value) {
if (value == null) return null;
ValueHolder valueHolder = (ValueHolder) component;
Converter converter = valueHolder.getConverter();
if (converter != null) {
return converter.getAsString(facesContext, component, value);
} else {
ValueExpression expr = component.getValueExpression("value");
if (expr != null) {
Class<?> valueType = expr.getType(facesContext.getELContext());
Converter converterForType = facesContext.getApplication().createConverter(valueType);
if (converterForType != null)
return converterForType.getAsString(facesContext, component, value);
}
}
return value.toString();
}
Object getValue() {
Map<UIData, Integer> savedRowIndexes = new HashMap<UIData, Integer>();
// save current row and set row needed to get value
for (Iterator<UIData> i = reverse(uiDataRowMap.keySet().iterator()); i.hasNext(); ) {
UIData uiData = i.next();
savedRowIndexes.put(uiData, uiData.getRowIndex());
uiData.setRowIndex(uiDataRowMap.get(uiData));
}
Object value = component.getValue();
// restore rows
for (Iterator<UIData> i = reverse(savedRowIndexes.keySet().iterator()); i.hasNext(); ) {
UIData uiData = i.next();
uiData.setRowIndex(savedRowIndexes.get(uiData));
}
return value;
}
/**
* populate the argument component with values, being sensitive to the possible multi-nature of
* the values, and to the type of the values.
*
* @param context the <code>FacesContext</code> for the current request
* @param component the <code>UIComponent</code> to populate
* @param componentType the component type
* @param value the value
* @param valueType the value type
*/
private void populateComponentWithValue(
FacesContext context,
UIComponent component,
String componentType,
String value,
String valueType) {
Application application = context.getApplication();
Converter converter = null;
// if we need a converter, and can have a converter
if (!"java.lang.String".equals(valueType) && component instanceof ValueHolder) {
// if so create it,
try {
converter = application.createConverter(CarStore.loadClass(valueType, this));
// add it to our component,
((ValueHolder) component).setConverter(converter);
} catch (ClassNotFoundException cne) {
FacesMessage errMsg = MessageFactory.getMessage(CONVERTER_ERROR_MESSAGE_ID, valueType);
throw new IllegalStateException(errMsg.getSummary());
}
}
// if this component is a SelectOne or SelectMany, take special action
if (isMultiValue(componentType)) {
// create a UISelectItems instance
UISelectItems items = new UISelectItems();
items.setValue(parseStringIntoArrayList(value, converter));
// add it to the component
component.getChildren().add(items);
} else {
// we have a single value
if (null != converter) {
component.getAttributes().put("value", converter.getAsObject(context, component, value));
} else {
component.getAttributes().put("value", value);
}
}
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((ValueHolder) instance)
.setConverter(ctx.getFacesContext().getApplication().createConverter(this.converterId));
}
@SuppressWarnings("deprecation")
public UIComponent processWidget(
UIComponent component,
String elementName,
Map<String, String> attributes,
UIMetawidget metawidget) {
// Actions don't get converters
if (ACTION.equals(elementName)) {
return component;
}
// Recurse into stubs...
if (component instanceof UIStub) {
// ...whose children have the same value binding as us...
//
// (this is important because choice of Converter is based off the attributes Map, and
// if the value binding is different then all bets are off as to the accuracy of the
// attributes)
javax.faces.el.ValueBinding valueBinding = component.getValueBinding("value");
if (valueBinding != null) {
String expressionString = valueBinding.getExpressionString();
List<UIComponent> children = component.getChildren();
for (UIComponent componentChild : children) {
javax.faces.el.ValueBinding childValueBinding = componentChild.getValueBinding("value");
if (childValueBinding == null) {
continue;
}
if (!expressionString.equals(childValueBinding.getExpressionString())) {
continue;
}
// ...and apply the Converter to them
processWidget(componentChild, elementName, attributes, metawidget);
}
}
return component;
}
// Ignore components that cannot have Converters
if (!(component instanceof ValueHolder)) {
return component;
}
// Defer evaluation of EL-based converters, else we will fail trying to store/restore them
// from the ViewState
ValueHolder valueHolder = (ValueHolder) component;
String converterId = attributes.get(FACES_CONVERTER);
if (converterId != null && FacesUtils.isExpression(converterId)) {
FacesContext context = FacesContext.getCurrentInstance();
component.setValueBinding(
"converter", context.getApplication().createValueBinding(converterId));
return component;
}
// Standard Converter
valueHolder.setConverter(getConverter(valueHolder, attributes));
return component;
}
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;
}
