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 GEXFNode implements GEXFElement {
035        GEXF root;
036
037        String id;
038        String label;
039
040        GEXFAttValues attvalues;
041        GEXFSpells spells;
042
043        //
044        // VIZ Extension
045        float x;
046        float y;
047        float z;
048        boolean position;
049
050        //
051
052        public GEXFNode(GEXF root, String id) {
053                this.root = root;
054
055                this.id = id;
056                this.label = id;
057
058                spells = new GEXFSpells(root);
059                attvalues = new GEXFAttValues(root);
060                position = false;
061        }
062
063        /*
064         * (non-Javadoc)
065         * 
066         * @see
067         * org.graphstream.stream.file.gexf.GEXFElement#export(org.graphstream.stream
068         * .file.gexf.SmartXMLWriter)
069         */
070        public void export(SmartXMLWriter stream) throws XMLStreamException {
071                stream.startElement("node");
072
073                stream.stream.writeAttribute("id", id);
074                stream.stream.writeAttribute("label", label);
075
076                if (position && root.isExtensionEnable(Extension.VIZ)) {
077                        stream.startElement("viz:position");
078                        stream.stream.writeAttribute("x", Float.toString(x));
079                        stream.stream.writeAttribute("y", Float.toString(y));
080                        stream.stream.writeAttribute("z", Float.toString(z));
081                        stream.endElement(); // POSITION
082                }
083
084                attvalues.export(stream);
085
086                if (root.isExtensionEnable(Extension.DYNAMICS))
087                        spells.export(stream);
088
089                stream.endElement(); // SPELLS
090        }
091}