001    // Copyright 2009 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    
015    package org.apache.tapestry5.internal.translator;
016    
017    import java.text.DecimalFormatSymbols;
018    import java.text.ParseException;
019    
020    /**
021     * Base class for parsing/formatting BigInteger and BigDecimal.
022     *
023     * @since 5.1.0.1
024     */
025    public abstract class BigTypesFormatter implements NumericFormatter
026    {
027        protected final DecimalFormatSymbols symbols;
028    
029        public BigTypesFormatter(DecimalFormatSymbols symbols)
030        {
031            this.symbols = symbols;
032        }
033    
034        protected String toString(char ch)
035        {
036            return String.valueOf(ch);
037        }
038    
039        public String toClient(Number value)
040        {
041            String normal = value.toString();
042    
043            // When formatting integers, we don't use the grouping seperator.
044    
045            return normal.replace('-', symbols.getMinusSign()).replace('.', symbols.getDecimalSeparator());
046        }
047    
048        public Number parse(String clientValue) throws ParseException
049        {
050                    // Allow for " " here since FF2/IE replaces \u00A0 (non breaking space) with \u0020 (normal space)
051            String noGroups = clientValue.replace(toString(symbols.getGroupingSeparator()), "").replace(" ", "");
052            String fixedNeg = noGroups.replace(symbols.getMinusSign(), '-');
053            String fixedDec = fixedNeg.replace(symbols.getDecimalSeparator(), '.');
054    
055            try
056            {
057                return parseConvertedValue(fixedDec);
058            }
059            catch (NumberFormatException ex)
060            {
061                throw new ParseException(ex.getMessage(), 0);
062            }
063        }
064    
065        protected abstract Number parseConvertedValue(String converted);
066    }