001/*
002 * Copyright 2006 - 2013
003 *      Stefan Balev    <stefan.balev@graphstream-project.org>
004 *      Julien Baudry   <julien.baudry@graphstream-project.org>
005 *      Antoine Dutot   <antoine.dutot@graphstream-project.org>
006 *      Yoann Pigné         <yoann.pigne@graphstream-project.org>
007 *      Guilhelm Savin  <guilhelm.savin@graphstream-project.org>
008 *  
009 * GraphStream is a library whose purpose is to handle static or dynamic
010 * graph, create them from scratch, file or any source and display them.
011 * 
012 * This program is free software distributed under the terms of two licenses, the
013 * CeCILL-C license that fits European law, and the GNU Lesser General Public
014 * License. You can  use, modify and/ or redistribute the software under the terms
015 * of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
016 * URL <http://www.cecill.info> or under the terms of the GNU LGPL as published by
017 * the Free Software Foundation, either version 3 of the License, or (at your
018 * option) any later version.
019 * 
020 * This program is distributed in the hope that it will be useful, but WITHOUT ANY
021 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
022 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
023 * 
024 * You should have received a copy of the GNU Lesser General Public License
025 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
026 * 
027 * The fact that you are presently reading this means that you have had
028 * knowledge of the CeCILL-C and LGPL licenses and that you accept their terms.
029 */
030package org.graphstream.stream.file.gexf;
031
032import javax.xml.stream.XMLStreamException;
033
034public class GEXFAttValue implements GEXFElement {
035        GEXF root;
036
037        String forId;
038        String value;
039
040        double start;
041        double end;
042
043        public GEXFAttValue(GEXF root, String forId, String value) {
044                this.root = root;
045                this.forId = forId;
046                this.value = value;
047                this.start = root.step;
048                this.end = Double.NaN;
049        }
050
051        /*
052         * (non-Javadoc)
053         * 
054         * @see
055         * org.graphstream.stream.file.gexf.GEXFElement#export(org.graphstream.stream
056         * .file.gexf.SmartXMLWriter)
057         */
058        public void export(SmartXMLWriter stream) throws XMLStreamException {
059                stream.startElement("attvalue");
060
061                stream.stream.writeAttribute("for", forId);
062                stream.stream.writeAttribute("value", value);
063
064                if (Double.isNaN(end))
065                        end = root.step;
066
067                if (root.isExtensionEnable(Extension.DYNAMICS)) {
068                        stream.stream.writeAttribute("start",
069                                        root.getTimeFormat().format.format(start));
070                        stream.stream.writeAttribute("end",
071                                        root.getTimeFormat().format.format(end));
072                }
073
074                stream.endElement(); // ATTVALUE
075        }
076
077}