org.apache.tapestry5.internal.services
Class FieldTranslatorImpl<T>

java.lang.Object
  org.apache.tapestry5.internal.services.FieldTranslatorImpl<T>

All Implemented Interfaces:

FieldTranslator<T>

public class FieldTranslatorImpl<T>
extends Object
implements FieldTranslator<T>

Constructor Summary

FieldTranslatorImpl(Field field, Translator<T> translator, MessageFormatter formatter, FormSupport formSupport)

Method Summary

Class<T>	getType() Returns the type of the server-side value.
T	parse(String input) Invoked after the client-submitted value has been translated to check that the value conforms to expectations (often, in terms of minimum or maximum value).
void	render(MarkupWriter writer) Invokes Translator.render(Field, String, MarkupWriter,org.apache.tapestry5.services.FormSupport).
String	toClient(T value) Converts a server-side value to a client-side string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FieldTranslatorImpl

public FieldTranslatorImpl(Field field,
                           Translator<T> translator,
                           MessageFormatter formatter,
                           FormSupport formSupport)

Method Detail

parse

public T parse(String input)
        throws ValidationException

Description copied from interface: FieldTranslator

Invoked after the client-submitted value has been translated to check that the value conforms to expectations (often, in terms of minimum or maximum value). If and only if the value is approved by all Validators is the value applied by the field.

Specified by:

parse in interface FieldTranslator<T>

Throws:

ValidationException - if the value violates the constraint

render

public void render(MarkupWriter writer)

Description copied from interface: FieldTranslator

Invokes Translator.render(Field, String, MarkupWriter,org.apache.tapestry5.services.FormSupport). This is called at a point "inside" the tag, so that additional attributes may be added. In many cases, the underlying Validator may write client-side JavaScript to enforce the constraint as well.

Specified by:

render in interface FieldTranslator<T>

Parameters:

writer - markup writer to direct output to.

See Also:

MarkupWriter.attributes(Object[])

toClient

public String toClient(T value)

Description copied from interface: FieldTranslator

Converts a server-side value to a client-side string. This allows for formatting of the value in a way appropriate to the end user.

Specified by:

toClient in interface FieldTranslator<T>

Parameters:

value - the server side value (which will not be null)

Returns:

client-side value to present to the user

See Also:

Translator.toClient(Object)

getType

public Class<T> getType()

Description copied from interface: FieldTranslator

Returns the type of the server-side value.

Specified by:

getType in interface FieldTranslator<T>

Returns:

a type