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 }