Library: org.gvsig.sldtools

/*******************************************************************************

 *

 *   gvSIG. Desktop Geographic Information System.

 *  

 *   Copyright (C) 2007-2013 gvSIG Association.

 *  

 *   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 3

 *   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., 51 Franklin Street, Fifth Floor, Boston,

 *   MA  02110-1301, USA.

 *  

 *   For any additional information, do not hesitate to contact us

 *   at info AT gvsig.com, or visit our website www.gvsig.com.

 *   

 *******************************************************************************/

package org.gvsig.sldsupport.impl.sld.parsing.symbol;

import java.io.IOException;

import java.util.Map;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

import org.gvsig.sldsupport.exception.InvalidSLDObjectException;

import org.gvsig.sldsupport.exception.SLDReadException;

import org.gvsig.sldsupport.exception.UnsupportedSLDObjectException;

import org.gvsig.sldsupport.impl.sld.parsing.DisplacementElement;

import org.gvsig.sldsupport.impl.sld.parsing.FillElement;

import org.gvsig.sldsupport.impl.sld.parsing.GeometryElement;

import org.gvsig.sldsupport.impl.sld.parsing.StrokeElement;

import org.gvsig.sldsupport.impl.util.SLDUtils;

import org.gvsig.sldsupport.impl.util.XmlBuilder;

import org.gvsig.sldsupport.sld.SLDTags;

import org.gvsig.sldsupport.sld.graphic.SLDDisplacement;

import org.gvsig.sldsupport.sld.symbol.SLDPolygonSymbol;

import org.gvsig.sldsupport.sld.symbol.misc.SLDFill;

import org.gvsig.sldsupport.sld.symbol.misc.SLDGeometry;

import org.gvsig.sldsupport.sld.symbol.misc.SLDStroke;

/**

 * Used to parse a parameter value inside another entity

 * 

 * @author jldominguez

 * 

 */

public class PolygonSymbolElement {

    public static void append(SLDPolygonSymbol obj, XmlBuilder xb,

        Map<String, String> atts) throws InvalidSLDObjectException,

        UnsupportedSLDObjectException {

        String v = obj.getVersion();

        if ((v == null) && (atts != null)) {

            v = atts.get(SLDTags.VERSION_ATTR);

        }

        if (v == null) {

            v = SLDUtils.DEFAULT_VERSION;

        }

        String ent = "";

        if (v.compareToIgnoreCase(SLDUtils.VERSION_1_0_0) == 0) {

            ent = SLDTags.POLYGONSYMBOLIZER;

        } else {

            ent = SLDTags.POLYGONSYMBOL;

        }

        if (atts == null) {

            xb.openTag(ent);

        } else {

            xb.openTag(ent, atts);

        }

        // ==================================================

        String gn = obj.getGeometryPropertyName();

        if (gn != null) {

            GeometryElement.append(new SLDGeometry(gn), xb, v);

        }

        // =================

        SLDFill fill = obj.getFill();

        if (fill != null) {

            FillElement.append(fill, xb, v);

        }

        // =================

        SLDStroke stro = obj.getStroke();

        if (stro != null) {

            StrokeElement.append(stro, xb, v);

        }

        // ================= Only in version 1.1.0

        if (v.compareToIgnoreCase(SLDUtils.VERSION_1_1_0) == 0) {

            SLDDisplacement disp = obj.getDisplacement();

            if (disp != null) {

                DisplacementElement.append(disp, xb, v);

            }

        }

        // ==================================================

        xb.closeTag();

    }

    public static SLDPolygonSymbol parse(XmlPullParser parser, String version)

        throws XmlPullParserException, IOException, SLDReadException {

        String ent_name = parser.getName();

        SLDPolygonSymbol resp = new SLDPolygonSymbol();

        resp.setVersion(version);

        int tag = 0;

        tag = parser.nextTag();

        String name = parser.getName();

        String txt = null;

        while (!(SLDUtils.isStr(name, ent_name) && (tag == XmlPullParser.END_TAG))) {

            switch (tag) {

            case XmlPullParser.START_TAG:

                if (SLDUtils.isStr(name, SLDTags.GEOMETRY)) {

                    SLDGeometry geom = GeometryElement.parse(parser, version);

                    resp.setGeometryPropertyName(geom.getPropertyName());

                    break;

                }

                if (SLDUtils.isStr(name, SLDTags.FILL)) {

                    SLDFill fil = FillElement.parse(parser, version);

                    resp.setFill(fil);

                    break;

                }

                if (SLDUtils.isStr(name, SLDTags.STROKE)) {

                    SLDStroke st = StrokeElement.parse(parser, version);

                    resp.setStroke(st);

                    break;

                }

                if (SLDUtils.isStr(name, SLDTags.DISPLACEMENT)) {

                    resp.setVersion(SLDUtils.VERSION_1_1_0);

                    SLDDisplacement disp =

                        DisplacementElement.parse(parser, version);

                    resp.setDisplacement(disp);

                    break;

                }

                /*

                 * Any other entity causes parsing error

                 */

                throw new SLDReadException(

                    "Bad SLD file. Unexpected entity in polygon symbol: "

                        + name);

            case XmlPullParser.END_TAG:

                break;

            case XmlPullParser.TEXT:

                break;

            }

            tag = parser.getEventType();

            name = parser.getName();

        }

        parser.nextTag();

        return resp;

    }

}