001    /*
002      Copyright (C) 2003 Laurent Martelli <laurent@aopsys.com>
003    
004      This program is free software; you can redistribute it and/or modify
005      it under the terms of the GNU Lesser General Public License as
006      published by the Free Software Foundation; either version 2 of the
007      License, or (at your option) any later version.
008    
009      This program is distributed in the hope that it will be useful,
010      but WITHOUT ANY WARRANTY; without even the implied warranty of
011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012      GNU Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser General Public License
015      along with this program; if not, write to the Free Software
016      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
017    
018    package org.objectweb.jac.aspects.gui;
019    
020    import java.text.DecimalFormat;
021    import java.text.ParsePosition;
022    import org.apache.log4j.Logger;
023    import org.objectweb.jac.core.rtti.FieldItem;
024    import org.objectweb.jac.core.rtti.MetaItem;
025    import org.objectweb.jac.core.rtti.RttiAC;
026    import org.objectweb.jac.util.Strings;
027    
028    public class IntFormat implements Format {
029        static Logger logger = Logger.getLogger("gui");    
030    
031        protected DecimalFormat format;
032        protected FieldItem field;
033        
034        public IntFormat(FieldItem field) {
035            this.field = field;
036    
037            MetaItem type = RttiAC.getFieldType(field);
038            String formatString = null;
039            if (type!=null)
040                formatString = GuiAC.getIntFormat(type);
041            else
042                formatString = GuiAC.getIntFormat(field);
043    
044            if (formatString!=null) 
045                format = new DecimalFormat(formatString);
046            else
047                logger.error("No format for "+field);
048        }
049        
050        public String format(Object value) {
051            return format((Number)value);
052        }
053    
054        public String format(Number value) {
055            if (value!=null)
056                return format(value.longValue());
057            else
058                return "";
059        }
060    
061        public String format(long value) {
062            if (format!=null)
063                return format.format(value);
064            else
065                return ""+value;
066        }
067    
068        public Object parse(String str, ParsePosition pos) {
069            return parseNumber(str,pos);
070        }
071    
072        public Number parseNumber(String str, ParsePosition pos) {
073            String string = str.trim();
074    
075            if (Strings.isEmpty(string))
076                return null;
077    
078            return format.parse(str,pos);
079        }
080    }
081