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| package org.apache.tapestry.form; |
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| import java.util.Iterator; |
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| import java.util.Locale; |
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| import org.apache.hivemind.HiveMind; |
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| import org.apache.hivemind.service.ThreadLocale; |
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| import org.apache.tapestry.IMarkupWriter; |
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| import org.apache.tapestry.IRequestCycle; |
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| import org.apache.tapestry.coerce.ValueConverter; |
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| import org.apache.tapestry.form.validator.Validator; |
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| import org.apache.tapestry.valid.IValidationDelegate; |
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| import org.apache.tapestry.valid.ValidatorException; |
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| public class ValidatableFieldSupportImpl implements ValidatableFieldSupport |
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| { |
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| private ValueConverter _converter; |
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| private ThreadLocale _threadLocale; |
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| public void setValueConverter(ValueConverter converter)
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| { |
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| _converter = converter;
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| } |
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| public void setThreadLocale(ThreadLocale threadLocale)
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| { |
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| _threadLocale = threadLocale;
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| } |
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| protected Iterator getValidatorsIterator(ValidatableField component)
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| { |
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| return (Iterator) _converter.coerceValue(component.getValidators(), Iterator.class);
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| } |
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| public void render(ValidatableField component, IMarkupWriter writer, IRequestCycle cycle)
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| { |
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| IValidationDelegate delegate = component.getForm().getDelegate();
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| String value = delegate.isInError() ? delegate.getFieldInputValue()
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| : getTranslatedValue(component); |
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| component.render(writer, cycle, value);
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| } |
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| public void renderContributions(ValidatableField component, IMarkupWriter writer,
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| IRequestCycle cycle) |
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| { |
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| if (component.getForm().isClientValidationEnabled())
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| { |
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| Locale locale = component.getPage().getLocale();
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| FormComponentContributorContext context = new FormComponentContributorContextImpl(
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| locale, cycle, component); |
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| component.getTranslator().renderContribution(writer, cycle, context, component);
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| Iterator validators = getValidatorsIterator(component);
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| while (validators.hasNext())
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| { |
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| Validator validator = (Validator) validators.next();
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| validator.renderContribution(writer, cycle, context, component);
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| } |
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| } |
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| } |
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| protected String getTranslatedValue(ValidatableField component)
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| { |
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| Object value = component.readValue();
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| return (value != null) ? component.getTranslator().format(component, value) : "";
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| } |
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| public void bind(ValidatableField component, IMarkupWriter writer, IRequestCycle cycle,
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| String value) |
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| { |
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| IValidationDelegate delegate = component.getForm().getDelegate();
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| delegate.recordFieldInputValue(value);
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| try
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| { |
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| Object object = HiveMind.isBlank(value) ? null : component.getTranslator().parse(
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| component, |
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| value); |
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| boolean isNonNull = object != null;
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| Iterator validators = getValidatorsIterator(component);
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| ValidationMessages messages = new ValidationMessagesImpl(_threadLocale.getLocale());
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| while (validators.hasNext())
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| { |
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| Validator validator = (Validator) validators.next();
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| if (isNonNull || validator.getAcceptsNull())
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| validator.validate(component, messages, object);
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| } |
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| component.writeValue(object);
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| } |
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| catch (ValidatorException ex) |
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| { |
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| delegate.record(ex);
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| } |
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| } |
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| } |