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 java.util.LinkedList;
033
034import javax.xml.stream.XMLStreamException;
035
036public class GEXFSpells implements GEXFElement {
037        GEXF root;
038        LinkedList<GEXFSpell> spells;
039
040        public GEXFSpells(GEXF root) {
041                this.root = root;
042                this.spells = new LinkedList<GEXFSpell>();
043        }
044
045        public void start() {
046                double date = root.step;
047
048                if (spells.size() == 0 || spells.getLast().closed) {
049                        GEXFSpell spell = new GEXFSpell(root);
050                        spell.start = date;
051
052                        spells.add(spell);
053                }
054        }
055
056        public void end() {
057                double date = root.step;
058
059                if (spells.size() > 0 && !spells.getLast().closed) {
060                        GEXFSpell spell = spells.getLast();
061
062                        spell.end = date;
063                        spell.closed = true;
064                }
065        }
066
067        /*
068         * (non-Javadoc)
069         * 
070         * @see
071         * org.graphstream.stream.file.gexf.GEXFElement#export(org.graphstream.stream
072         * .file.gexf.SmartXMLWriter)
073         */
074        public void export(SmartXMLWriter stream) throws XMLStreamException {
075                if (spells.size() == 0)
076                        return;
077
078                stream.startElement("spells");
079
080                for (int i = 0; i < spells.size(); i++)
081                        spells.get(i).export(stream);
082
083                stream.endElement(); // SPELLS
084        }
085}