    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
    043package org.jfree.xml.parser.coretypes;
    044
    045import java.awt.Color;
    046
    047import org.jfree.xml.parser.AbstractXmlReadHandler;
    048import org.xml.sax.Attributes;
    049import org.xml.sax.SAXException;
    050
    051/**
    052 * A SAX handler for reading {@link Color} objects from an XML element.
    053 */
    054public 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}