001//  Copyright 2008 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.internal.services;
016
017import org.apache.tapestry5.*;
018import org.apache.tapestry5.commons.MessageFormatter;
019import org.apache.tapestry5.services.FormSupport;
020
021public class FieldTranslatorImpl<T> implements FieldTranslator<T>
022{
023    private final Field field;
024    private final Translator<T> translator;
025    private final MessageFormatter formatter;
026    private final FormSupport formSupport;
027
028    public FieldTranslatorImpl(Field field, Translator<T> translator, MessageFormatter formatter,
029                               FormSupport formSupport)
030    {
031        this.field = field;
032        this.translator = translator;
033        this.formatter = formatter;
034        this.formSupport = formSupport;
035    }
036
037    public T parse(String input) throws ValidationException
038    {
039        return translator.parseClient(field, input, formatMessage());
040    }
041
042    private String formatMessage()
043    {
044        return formatter.format(field.getLabel());
045    }
046
047    public void render(MarkupWriter writer)
048    {
049        translator.render(field, formatMessage(), writer, formSupport);
050    }
051
052    public String toClient(T value)
053    {
054        return translator.toClient(value);
055    }
056
057    public Class<T> getType()
058    {
059        return translator.getType();
060    }
061}