    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     * ColorReadHandler
    029     * ----------------
    030     * (C) Copyright 2003, by Thomas Morgner and Contributors.
    031     *
    032     * Original Author:  Thomas Morgner;
    033     * Contributor(s):   David Gilbert (for Object Refinery Limited);
    034     *
    035     * $Id: ColorReadHandler.java,v 1.2 2005/10/18 13:33:32 mungady Exp $
    036     *
    037     * Changes (from 25-Nov-2003)
    038     * --------------------------
    039     * 25-Nov-2003 : Added standard header and Javadocs (DG);
    040     *
    041     */
    042
    043    package org.jfree.xml.parser.coretypes;
    044
    045    import java.awt.Color;
    046
    047    import org.jfree.xml.parser.AbstractXmlReadHandler;
    048    import org.xml.sax.Attributes;
    049    import org.xml.sax.SAXException;
    050
    051    /**
    052     * A SAX handler for reading {@link Color} objects from an XML element.
    053     */
    054    public class ColorReadHandler extends AbstractXmlReadHandler  {
    055
    056        /** The color under construction. */
    057        private Color color;
    058
    059        /**
    060         * Creates a new handler.
    061         */
    062        public ColorReadHandler() {
    063            super();
    064        }
    065
    066        /**
    067         * Called at the start of parsing a {@link Color} element, this method reads the attributes and
    068         * constructs the {@link Color}.
    069         *
    070         * @param attrs  the attributes.
    071         *
    072         * @throws SAXException to indicate a parsing error.
    073         */
    074        protected void startParsing(final Attributes attrs) throws SAXException {
    075            final String encodedValue = attrs.getValue("value");
    076            this.color = Color.decode(encodedValue);
    077            if (attrs.getValue("alpha") != null) {
    078                this.color = new Color(this.color.getRed(), this.color.getGreen(),
    079                                       this.color.getBlue(),
    080                                       Integer.parseInt(attrs.getValue("alpha")));
    081            }
    082        }
    083
    084        /**
    085         * Returns the color under construction.
    086         *
    087         * @return the color.
    088         */
    089        public Object getObject() {
    090            return this.color;
    091        }
    092
    093    }