001// Copyright 2009, 2012 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.translator;
016
017import org.apache.tapestry5.Field;
018import org.apache.tapestry5.MarkupWriter;
019import org.apache.tapestry5.ValidationException;
020import org.apache.tapestry5.services.FormSupport;
021
022import java.text.ParseException;
023
024/**
025 * Uses a {@link org.apache.tapestry5.internal.translator.NumericTranslatorSupport} to provide proper locale-aware
026 * support for all the built-in numeric types.
027 *
028 * @since 5.1.0.1
029 */
030public class NumericTranslator<T extends Number> extends AbstractTranslator<T>
031{
032    private final NumericTranslatorSupport support;
033
034    public NumericTranslator(String name, Class<T> type, NumericTranslatorSupport support)
035    {
036        super(name, type, support.getMessageKey(type));
037
038        this.support = support;
039    }
040
041    public void render(Field field, String message, MarkupWriter writer, FormSupport formSupport)
042    {
043        if (formSupport.isClientValidationEnabled())
044        {
045            support.setupTranslation(getType(), writer.getElement(), message);
046        }
047    }
048
049    public T parseClient(Field field, String clientValue, String message) throws ValidationException
050    {
051        try
052        {
053            return support.parseClient(getType(), clientValue);
054        } catch (ParseException ex)
055        {
056            throw new ValidationException(message);
057        }
058    }
059
060    public String toClient(T value)
061    {
062        return support.toClient(getType(), value);
063    }
064}