    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
    044    package org.jfree.xml.parser.coretypes;
    045
    046    import java.awt.RenderingHints;
    047    import java.lang.reflect.Field;
    048    import java.lang.reflect.Modifier;
    049
    050    import org.jfree.util.Log;
    051    import org.jfree.xml.parser.AbstractXmlReadHandler;
    052    import org.jfree.xml.parser.XmlReaderException;
    053    import org.xml.sax.Attributes;
    054    import org.xml.sax.SAXException;
    055
    056    /**
    057     * A read handler for a rendering hint value.
    058     */
    059    public 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    }