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package org.apache.tapestry.form; |
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import java.util.Iterator; |
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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.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 renderContributions(ValidatableField component, IMarkupWriter writer, |
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IRequestCycle cycle) |
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{ |
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ValidatableFieldExtension extension = null; |
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if (ValidatableFieldExtension.class.isInstance(component)) |
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extension = (ValidatableFieldExtension)component; |
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if (component.getForm().isClientValidationEnabled()) |
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{ |
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FormComponentContributorContext context = new FormComponentContributorContextImpl( |
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_threadLocale.getLocale(), cycle, 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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if (extension != null && extension.overrideValidator(validator, cycle)) |
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extension.overrideContributions(validator, context, writer, cycle); |
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else |
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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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public void validate(ValidatableField component, IMarkupWriter writer, IRequestCycle cycle, Object object) throws ValidatorException |
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{ |
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boolean isNonNull = (object != null); |
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Iterator validators = getValidatorsIterator(component); |
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ValidationMessages messages = new ValidationMessagesImpl(component, _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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} |
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public boolean isRequired(ValidatableField field) |
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{ |
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Iterator i = getValidatorsIterator(field); |
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while (i.hasNext()) |
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{ |
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Validator validator = (Validator) i.next(); |
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if (validator.isRequired()) |
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return true; |
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} |
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return false; |
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} |
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} |