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, but
010      WITHOUT ANY WARRANTY; without even the implied warranty of
011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
012      Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser General Public
015      License along with this program; if not, write to the Free Software
016      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
017      USA */
018    
019    package org.objectweb.jac.aspects.gui.web;
020    
021    import java.text.ParsePosition;
022    import org.objectweb.jac.aspects.gui.FloatFormat;
023    import org.objectweb.jac.core.rtti.FieldItem;
024    import org.objectweb.jac.aspects.gui.NumberFormat;
025    
026    /**
027     * HTML editor and viewer for percentage values. It can handle short,
028     * int, long, float, and double. In the case of short, int and long,
029     * the percentage value is considered to be between 0 and 100, while
030     * in the case of float and double it must be between 0 and 1.
031     */
032    public class FloatEditor extends FormatEditor 
033        implements HTMLEditor
034    {
035        public FloatEditor(Object substance, FieldItem field) {
036            super(substance,field);
037            width = 15;
038        }
039    
040        protected void initFormat(FieldItem field) {
041            format = new FloatFormat(field);
042        }
043    
044        public Object parse(String s) {
045            ParsePosition pos = new ParsePosition(0);        
046            Class cl = type.getActualClass();
047            if (cl==float.class || cl==Float.class) {
048                return ((NumberFormat)format).parseFloat(s,pos);
049            } else if (cl==double.class || cl==Double.class) {
050                return ((NumberFormat)format).parseDouble(s,pos);
051            } else {
052                throw new RuntimeException("FloatEditor: Unhandled type "+type.getName());
053            }
054        }
055    }