001/* ======================================================================== 002 * JCommon : a free general purpose class library for the Java(tm) platform 003 * ======================================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jcommon/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * ---------------------------------- 028 * RenderingHintValueReadHandler.java 029 * ---------------------------------- 030 * (C)opyright 2003, by Thomas Morgner and Contributors. 031 * 032 * Original Author: Thomas Morgner; 033 * Contributor(s): David Gilbert (for Object Refinery Limited); 034 * 035 * $Id: RenderingHintValueReadHandler.java,v 1.3 2005/10/18 13:33:32 mungady Exp $ 036 * 037 * Changes 038 * ------- 039 * 03-Dec-2003 : Initial version 040 * 11-Feb-2004 : Added missing Javadocs (DG); 041 * 042 */ 043 044package org.jfree.xml.parser.coretypes; 045 046import java.awt.RenderingHints; 047import java.lang.reflect.Field; 048import java.lang.reflect.Modifier; 049 050import org.jfree.util.Log; 051import org.jfree.xml.parser.AbstractXmlReadHandler; 052import org.jfree.xml.parser.XmlReaderException; 053import org.xml.sax.Attributes; 054import org.xml.sax.SAXException; 055 056/** 057 * A read handler for a rendering hint value. 058 */ 059public class RenderingHintValueReadHandler extends AbstractXmlReadHandler { 060 061 /** The key under construction. */ 062 private Object key; 063 064 /** The value under construction. */ 065 private Object value; 066 067 /** 068 * Creates a new read handler. 069 */ 070 public RenderingHintValueReadHandler() { 071 super(); 072 } 073 074 /** 075 * Starts parsing. 076 * 077 * @param attrs the attributes. 078 * 079 * @throws SAXException if there is a parsing error. 080 */ 081 protected void startParsing(final Attributes attrs) throws SAXException { 082 final String keyText = attrs.getValue("key"); 083 final String valueText = attrs.getValue("value"); 084 this.key = stringToHintField(keyText); 085 this.value = stringToHintField(valueText); 086 } 087 088 private Object stringToHintField (final String name) { 089 final Field[] fields = RenderingHints.class.getFields(); 090 for (int i = 0; i < fields.length; i++) { 091 final Field f = fields[i]; 092 if (Modifier.isFinal(f.getModifiers()) 093 && Modifier.isPublic(f.getModifiers()) 094 && Modifier.isStatic(f.getModifiers())) { 095 try { 096 final String fieldName = f.getName(); 097 if (fieldName.equals(name)) { 098 return f.get(null); 099 } 100 } 101 catch (Exception e) { 102 Log.info ("Unable to write RenderingHint", e); 103 } 104 } 105 } 106 throw new IllegalArgumentException("Invalid value given"); 107 } 108 109 /** 110 * Returns the object for this element. 111 * 112 * @return the object. 113 * 114 * @throws XmlReaderException if there is a parsing error. 115 */ 116 public Object getObject() throws XmlReaderException { 117 return new Object[] {this.key, this.value}; 118 } 119 120 /** 121 * Returns the key. 122 * 123 * @return the key. 124 */ 125 public Object getKey() { 126 return this.key; 127 } 128 129 /** 130 * Returns the value. 131 * 132 * @return the value. 133 */ 134 public Object getValue() { 135 return this.value; 136 } 137 138}