Application: gvSIG desktop

/* 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

 */

package org.gvsig.sldsupport.version.sld1_0_0;

import java.io.IOException;

import java.net.URL;

import org.gvsig.sldsupport.graphic.SLDExternalGraphic;

import org.gvsig.sldsupport.util.SLDTags;

import org.gvsig.sldsupport.util.XmlBuilder;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

/**

 * Implements the ExternalGraphic element of an SLD implementation specification

 * (version 1.0.0).<p>

 * The ExternalGraphic element allows a reference to be made to an external graphic

 * file with a Web URL. The onlineResource sub-element gives the URL and the format

 * sub-element identifies the expected document MIME type of a succesful fetch. Knowing

 * the MIME type in advance allows the styler to select the best-supported format

 * from the list of URLs with the equivalent content. Users should avoid referencing

 * external graphics that may change at arbitrary times. Graphic should be static

 * when al all possible.

 *

 * @see http://portal.opengeospatial.org/files/?artifact_id=1188

 *

 * @author pepe vidal salvador - jose.vidal.salvador@iver.es

*/

public class SLDExternalGraphic1_0_0 extends SLDExternalGraphic {

        public void parse(XmlPullParser parser, int cuTag, String expressionType)

                        throws IOException, XmlPullParserException  {

                int currentTag;

                boolean end = false;

                parser.require(XmlPullParser.START_TAG, null, SLDTags.EXTERNALGRAPHIC);

                currentTag = parser.next();

                while (!end)

                {

                        switch(currentTag)

                        {

                        case XmlPullParser.START_TAG:

                                if (parser.getName().compareTo(SLDTags.ONLINE_RESOURCE)==0) {

                                        for (int i = 0; i < parser.getAttributeCount(); i++) {

                                                if (parser.getAttributeName(i).compareTo(SLDTags.XLINK_HREF) == 0) {

                                                        URL myURL = new URL(parser.getAttributeValue(i));

                                                        addOnlineResource(myURL);

                                                }

                                        }

                                }

                                else if (parser.getName().compareTo(SLDTags.FORMAT)==0) {

                                        setFormat(parser.nextText());

                                }

                                break;

                        case XmlPullParser.END_TAG:

                                if (parser.getName().compareTo(SLDTags.EXTERNALGRAPHIC) == 0)

                                        end = true;

                                break;

                        case XmlPullParser.TEXT:

                                break;

                        }

                        if (!end)

                                currentTag = parser.next();

                }

                parser.require(XmlPullParser.END_TAG, null, SLDTags.EXTERNALGRAPHIC);

        }

        public String toXML() {

                XmlBuilder xmlBuilder = new XmlBuilder();

                xmlBuilder.openTag(SLDTags.EXTERNALGRAPHIC);

                xmlBuilder.writeRaw("<"+SLDTags.ONLINE_RESOURCE+" "+SLDTags.XLINK_HREF+"= \""+

                                getOnlineResource().get(0)+"\"/>");

                if(getFormat() != null) {

                        xmlBuilder.writeTag(SLDTags.FORMAT, getFormat());

                }

                xmlBuilder.closeTag();

                return xmlBuilder.getXML();

        }

}