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 * RenderingHintsHandler.java 029 * -------------------------- 030 * (C)opyright 2003-2005, by Thomas Morgner and Contributors. 031 * 032 * Original Author: Thomas Morgner; 033 * Contributor(s): David Gilbert (for Object Refinery Limited); 034 * 035 * $Id: RenderingHintsWriteHandler.java,v 1.5 2005/10/18 13:35:21 mungady Exp $ 036 * 037 * Changes 038 * ------------------------- 039 * 22.11.2003 : Initial version 040 * 041 */ 042 043 package org.jfree.xml.writer.coretypes; 044 045 import java.awt.RenderingHints; 046 import java.io.IOException; 047 import java.lang.reflect.Field; 048 import java.lang.reflect.Modifier; 049 import java.util.Iterator; 050 051 import org.jfree.util.Log; 052 import org.jfree.xml.writer.AbstractXmlWriteHandler; 053 import org.jfree.xml.writer.AttributeList; 054 import org.jfree.xml.writer.XMLWriter; 055 import org.jfree.xml.writer.XMLWriterException; 056 import org.jfree.xml.writer.XMLWriterSupport; 057 058 /** 059 * A handler for writing a {@link RenderingHints} object. 060 */ 061 public class RenderingHintsWriteHandler extends AbstractXmlWriteHandler { 062 063 /** 064 * Default constructor. 065 */ 066 public RenderingHintsWriteHandler() { 067 super(); 068 } 069 070 /** 071 * Performs the writing of a single object. 072 * 073 * @param tagName the tag name. 074 * @param object the object. 075 * @param writer the writer. 076 * @param mPlexAttribute ??. 077 * @param mPlexValue ??. 078 * 079 * @throws IOException if there is an I/O error. 080 * @throws XMLWriterException if there is a writer problem. 081 */ 082 public void write(final String tagName, final Object object, final XMLWriter writer, 083 final String mPlexAttribute, final String mPlexValue) 084 throws IOException, XMLWriterException { 085 086 writer.writeTag(tagName, mPlexAttribute, mPlexValue, XMLWriterSupport.OPEN); 087 writer.allowLineBreak(); 088 final RenderingHints hints = (RenderingHints) object; 089 final Iterator it = hints.keySet().iterator(); 090 while (it.hasNext()) { 091 final RenderingHints.Key key = (RenderingHints.Key) it.next(); 092 final String keyname = hintFieldToString(key); 093 final String value = hintFieldToString(hints.get(key)); 094 final AttributeList attribs = new AttributeList(); 095 attribs.setAttribute("key", keyname); 096 attribs.setAttribute("value", value); 097 writer.writeTag("entry", attribs, XMLWriterSupport.CLOSE); 098 writer.allowLineBreak(); 099 } 100 writer.writeCloseTag(tagName); 101 writer.allowLineBreak(); 102 } 103 104 private String hintFieldToString(final Object o) { 105 final Field[] fields = RenderingHints.class.getFields(); 106 for (int i = 0; i < fields.length; i++) { 107 final Field f = fields[i]; 108 if (Modifier.isFinal(f.getModifiers()) 109 && Modifier.isPublic(f.getModifiers()) 110 && Modifier.isStatic(f.getModifiers())) { 111 try { 112 final Object value = f.get(null); 113 if (o.equals(value)) { 114 return f.getName(); 115 } 116 } 117 catch (Exception e) { 118 Log.info ("Unable to write RenderingHint", e); 119 } 120 } 121 } 122 throw new IllegalArgumentException("Invalid value given"); 123 } 124 125 }