Application: gvSIG desktop

package org.gvsig.gpe.kml.parser.v21.geometries;

import java.io.IOException;

import javax.xml.namespace.QName;

import org.gvsig.gpe.kml.parser.GPEDefaultKmlParser;

import org.gvsig.gpe.kml.parser.v21.coordinates.CoordinatesTypeIterator;

import org.gvsig.gpe.kml.utils.Kml2_1_Tags;

import org.gvsig.gpe.xml.stream.IXmlStreamReader;

import org.gvsig.gpe.xml.stream.XmlStreamException;

import org.gvsig.gpe.xml.utils.CompareUtils;

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

 *

 * $Id:LineStringTypeBinding.java 357 2008-01-09 17:50:08Z jpiera $

 * $Log$

 * Revision 1.2  2007/06/07 14:53:59  jorpiell

 * Add the schema support

 *

 * Revision 1.1  2007/05/11 07:06:29  jorpiell

 * Refactoring of some package names

 *

 * Revision 1.4  2007/05/08 08:22:37  jorpiell

 * Add comments to create javadocs

 *

 * Revision 1.3  2007/05/02 11:46:50  jorpiell

 * Writing tests updated

 *

 * Revision 1.2  2007/04/20 08:38:59  jorpiell

 * Tests updating

 *

 * Revision 1.1  2007/04/13 13:16:21  jorpiell

 * Add KML reading support

 *

 * Revision 1.1  2007/03/07 08:19:10  jorpiell

 * Pasadas las clases de KML de libGPE-GML a libGPE-KML

 *

 * Revision 1.1  2007/02/28 11:48:31  csanchez

 * *** empty log message ***

 *

 * Revision 1.1  2007/02/20 10:53:20  jorpiell

 * A?adidos los proyectos de kml y gml antiguos

 *

 * Revision 1.1  2007/02/12 13:49:18  jorpiell

 * A?adido el driver de KML

 *

 *

 */

/**

 * It parses the LineQName tag. Example:

 * <p>

 * <pre>

 * <code>

 * <LineString>

 * <coord><X>56.1</X><Y>0.45</Y></coord>

 * <coord><X>67.23</X><Y>0.98</Y></coord>

 * </LineString>

 * </code>

 * </pre>

 * </p> 

 * @author Jorge Piera Llodr? (piera_jor@gva.es)

 * @see http://code.google.com/apis/kml/documentation/kml_tags_21.html#linestring

 */

public class LineStringTypeBinding {

        /**

         * It parses the LineQName tag

         * @param parser

         * The XML parser

         * @param handler

         * The GPE parser that contains the content handler and

         * the error handler

         * @return

         * A line string

         * @throws IOException 

         * @throws XmlStreamException 

         * @throws XmlStreamException

         * @throws IOException

         */

        public Object parse(IXmlStreamReader parser,GPEDefaultKmlParser handler) throws XmlStreamException, IOException {

                boolean endFeature = false;

                int currentTag;

                Object lineString = null;

                String id = handler.getProfile().getGeometryBinding().getID(parser, handler);

                QName tag = parser.getName();

                currentTag = parser.getEventType();

                while (!endFeature){

                        switch(currentTag){

                        case IXmlStreamReader.START_ELEMENT:

                                if (CompareUtils.compareWithOutNamespace(tag,Kml2_1_Tags.COORDINATES)){

                                        CoordinatesTypeIterator coordinatesIterator = handler.getProfile().getCoordinatesTypeBinding();

                                        coordinatesIterator.initialize(parser, handler, Kml2_1_Tags.LINESTRING);

                                        lineString = handler.getContentHandler().startLineString(id,

                                                        coordinatesIterator,                                                                

                                                        Kml2_1_Tags.DEFAULT_SRS);        

                                        return lineString;

                                }

                                break;

                        case IXmlStreamReader.END_ELEMENT:

                                if (CompareUtils.compareWithOutNamespace(tag,Kml2_1_Tags.LINESTRING)){                                                

                                        endFeature = true;

                                        handler.getContentHandler().endLineString(lineString);

                                }

                                break;

                        case IXmlStreamReader.CHARACTERS:                                        

                                break;

                        }

                        if (!endFeature){                                        

                                currentTag = parser.next();

                                tag = parser.getName();

                        }

                }                        

                return lineString;        

        }

}