    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    }