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.io.PrintWriter; 022 import java.text.ParsePosition; 023 import org.objectweb.jac.aspects.gui.FloatFormat; 024 import org.objectweb.jac.core.rtti.FieldItem; 025 import org.objectweb.jac.aspects.gui.Format; 026 027 /** 028 * HTML editor and viewer for percentage values. It can handle short, 029 * int, long, float, and double. In the case of short, int and long, 030 * the percentage value is considered to be between 0 and 100, while 031 * in the case of float and double it must be between 0 and 1. 032 */ 033 public abstract class FormatEditor extends AbstractFieldEditor 034 implements HTMLEditor 035 { 036 public FormatEditor(Object substance, FieldItem field) { 037 super(substance,field); 038 initFormat(field); 039 } 040 041 /** Stores the default format of the float */ 042 protected Format format; 043 044 protected abstract void initFormat(FieldItem field); 045 046 public void setField(FieldItem field) { 047 super.setField(field); 048 initFormat(field); 049 } 050 051 // HTMLEditor interface 052 053 public void genHTML(PrintWriter out) { 054 out.print("<input type=\"text\" name=\""+label+"\" size=\""+width+"\" style=\"width:"+width+"ex\" "+ 055 "value=\""+(value!=null?(format.format(value)):"")+"\""); 056 printAttributes(out); 057 out.println(">"); 058 } 059 060 protected boolean doReadValue(Object parameter) { 061 if (parameter==null) 062 return false; 063 Object parsedValue = parse((String)parameter); 064 if (parsedValue==null) { 065 return false; 066 } else { 067 setValue(parsedValue); 068 return true; 069 } 070 } 071 072 protected Object parse(String s) { 073 ParsePosition pos = new ParsePosition(0); 074 return format.parse(s,pos); 075 } 076 } 077