| gvSIG desktop 1

/* 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.remoteClient.sld.sld1_0_0.layers;

import java.io.IOException;

import java.net.URL;

import java.util.ArrayList;

import org.gvsig.remoteClient.gml.schemas.XMLSchemaParser;

import org.gvsig.remoteClient.sld.SLDTags;

import org.gvsig.remoteClient.sld.filterEncoding.Filter;

import org.gvsig.remoteClient.sld.layers.SLDUserLayer;

import org.gvsig.remoteClient.sld.sld1_0_0.SLDFeatureTypeStyle1_0_0;

import org.gvsig.remoteClient.sld.sld1_0_0.SLDLayerFeatureConstraints1_0_0;

import org.gvsig.remoteClient.sld.sld1_0_0.SLDRule1_0_0;

import org.gvsig.remoteClient.sld.sld1_0_0.styles.SLDUserStyle1_0_0;

import org.xmlpull.v1.XmlPullParserException;

import com.iver.cit.gvsig.fmap.drivers.legend.LegendDriverException;

/**

 * Implements the User-Defined Layer element of an SLD implementation specification

 * (version 1.0.0).<p>

 * 

 * In addition to using named layers, it is also useful to be able to define custom

 * user-defined layers for rendering.<p>

 * Since a layer is defined as a collection of potentially mixed-type features, the

 * UserLayer element must provide the means to identify the features to be used. All

 * features to be rendered are assumed to be fetched from a Web Feature Server (WFS) or a

 * Web Coverage Service (WCS, in which case the term �features� is used loosely).

 * 

 * The remote server to be used is identified by RemoteOWS (OGC Web Service) element.

 * 

 * @see SLDLayer

 * @see SLDNamedLayer1_0_0

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

 * 

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

 */

public class SLDUserLayer1_0_0 extends SLDUserLayer {

        /**

         * Parses the xml data retrieved from the SLD, it will parse the User-Defined Layer 

         * element</p>

         * @throws LegendDriverException 

         */

        public void parse(XMLSchemaParser parser)throws IOException, XmlPullParserException, LegendDriverException {

                int currentTag;

                boolean end = false;

                parser.require(XMLSchemaParser.START_TAG, null, SLDTags.USERDEFINEDLAYER);

                currentTag = parser.next();

                while (!end)

                {

                        switch(currentTag)

                        {

                        case XMLSchemaParser.START_TAG:

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

                                        setName(parser.nextText());

                                }

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

                                        parseRemoteOWS(parser);

                                }

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

                                        SLDLayerFeatureConstraints1_0_0 sldLayerFeatCons = new SLDLayerFeatureConstraints1_0_0();

                                        sldLayerFeatCons.parse(parser,currentTag,null);

                                        addLayerFeatureConstraint(sldLayerFeatCons);

                                }

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

                                        SLDUserStyle1_0_0 userStyle = new SLDUserStyle1_0_0();

                                        userStyle.parse(parser);

                                        addLayerStyle(userStyle);

                                }

                                break;

                        case XMLSchemaParser.END_TAG:

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

                                        end = true;

                                break;

                        case XMLSchemaParser.TEXT:

                                break;

                        }

                        if (!end)

                                currentTag = parser.next();

                }

                parser.require(XMLSchemaParser.END_TAG, null, SLDTags.USERDEFINEDLAYER);

        }

        /**

         * Parses the xml data retrieved from the SLD, it will parse the RemoteOWS 

         * element which identifies the remote server to be used</p>

         * 

         * @param parser

         * @throws IOException

         * @throws XmlPullParserException

         */

        private void parseRemoteOWS(XMLSchemaParser parser)throws IOException, XmlPullParserException {

                int currentTag;

                boolean end = false;

                parser.require(XMLSchemaParser.START_TAG, null, SLDTags.REMOTE_OWS);

                currentTag = parser.next();

                while (!end)

                {

                        switch(currentTag)

                        {

                        case XMLSchemaParser.START_TAG:

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

                                        setRemoteOWSService(parser.nextText());

                                }

                                else 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));

                                                        addRemoteOWSOnlineResource(myURL);

                                                }

                                        }

                                }

                                break;

                        case XMLSchemaParser.END_TAG:

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

                                        end = true;

                                break;

                        case XMLSchemaParser.TEXT:

                                break;

                        }

                        if (!end)

                                currentTag = parser.next();

                }

                parser.require(XMLSchemaParser.END_TAG, null, SLDTags.REMOTE_OWS);

        }

        public ArrayList<Filter> getLayerFilters() {

                ArrayList<Filter> layerFilter = new ArrayList<Filter>();

                for (int i = 0; i < this.getLayerStyles().size(); i++) {

                        SLDUserStyle1_0_0 userStyle = (SLDUserStyle1_0_0) this.getLayerStyles().get(i);

                        for (int j = 0; j < userStyle.getFeatureTypeStyle().size(); j++) {

                                SLDFeatureTypeStyle1_0_0 featTypeStyle = (SLDFeatureTypeStyle1_0_0) userStyle.getFeatureTypeStyle().get(j);

                                for (int k = 0; k < featTypeStyle.getRules().size(); k++) {

                                        SLDRule1_0_0 rule = (SLDRule1_0_0) featTypeStyle.getRules().get(k);

                                        layerFilter.add(rule.getFilter());

                                }

                        }

                }

                return layerFilter;

        }

        @Override

        public String toXML() {

                // TODO Auto-generated method stub

                throw new Error ("Not yet implemented");

        }

}