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 * RenderingHintsReadHandler.java
029 * ------------------------------
030 * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
031 *
032 * Original Author: Thomas Morgner;
033 * Contributor(s): David Gilbert (for Object Refinery Limited);
034 *
035 * $Id: RenderingHintsReadHandler.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
044 package org.jfree.xml.parser.coretypes;
045
046 import java.awt.RenderingHints;
047 import java.util.ArrayList;
048
049 import org.jfree.xml.parser.AbstractXmlReadHandler;
050 import org.jfree.xml.parser.XmlReadHandler;
051 import org.jfree.xml.parser.XmlReaderException;
052 import org.xml.sax.Attributes;
053 import org.xml.sax.SAXException;
054
055 /**
056 * A read handler that can parse the XML element for a {@link RenderingHints} collection.
057 */
058 public class RenderingHintsReadHandler extends AbstractXmlReadHandler {
059
060 /** The subhandlers. */
061 private ArrayList handlers;
062
063 /** The rendering hints under construction. */
064 private RenderingHints renderingHints;
065
066 /**
067 * Creates a new read handler.
068 */
069 public RenderingHintsReadHandler() {
070 super();
071 }
072
073 /**
074 * Starts parsing.
075 *
076 * @param attrs the attributes.
077 *
078 * @throws SAXException never.
079 */
080 protected void startParsing(final Attributes attrs) throws SAXException {
081 this.handlers = new ArrayList();
082 }
083
084 /**
085 * Returns the handler for a child element.
086 *
087 * @param tagName the tag name.
088 * @param atts the attributes.
089 *
090 * @return the handler.
091 *
092 * @throws SAXException if there is a parsing error.
093 * @throws XmlReaderException if there is a reader error.
094 */
095 protected XmlReadHandler getHandlerForChild(final String tagName, final Attributes atts)
096 throws XmlReaderException, SAXException {
097
098 if (!tagName.equals("entry")) {
099 throw new SAXException("Expected 'entry' tag.");
100 }
101
102 final XmlReadHandler handler = new RenderingHintValueReadHandler();
103 this.handlers.add(handler);
104 return handler;
105 }
106
107 /**
108 * Done parsing.
109 *
110 * @throws SAXException if there is a parsing error.
111 * @throws XmlReaderException if there is a reader error.
112 */
113 protected void doneParsing() throws SAXException, XmlReaderException {
114 this.renderingHints = new RenderingHints(null);
115
116 for (int i = 0; i < this.handlers.size(); i++) {
117 final RenderingHintValueReadHandler rh =
118 (RenderingHintValueReadHandler) this.handlers.get(i);
119 this.renderingHints.put(rh.getKey(), rh.getValue());
120 }
121 }
122
123 /**
124 * Returns the object for this element.
125 *
126 * @return the object.
127 *
128 * @throws XmlReaderException if there is a parsing error.
129 */
130 public Object getObject() throws XmlReaderException {
131 return this.renderingHints;
132 }
133 }