ExternalGraphic.java

/*
 * This file is part of the GeoLatte project.
 *
 *     GeoLatte is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     GeoLatte 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 Lesser General Public License for more details.
 *
 *     You should have received a copy of the GNU Lesser General Public License
 *     along with GeoLatte.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  Copyright (C) 2010 - 2011 and Ownership of code is shared by:
 *  Qmino bvba - Esperantolaan 4 - 3001 Heverlee  (http://www.qmino.com)
 *  Geovise bvba - Generaal Eisenhowerlei 9 - 2140 Antwerpen (http://www.geovise.com)
 */

package org.geolatte.maprenderer.sld.graphics;

import net.opengis.se.v_1_1_0.ExternalGraphicType;
import net.opengis.se.v_1_1_0.OnlineResourceType;


/**
 * A reference to an external graphics file, to be used a a source for {@link Graphic}s.
 *
 * @author Karel Maesen, Geovise BVBA
 *         creation-date: 9/12/11
 */
public class ExternalGraphic {


    final private String url;
    final private String format;

    public ExternalGraphic(ExternalGraphicType type) {
        verify(type);
        OnlineResourceType onlineResource = type.getOnlineResource();
        url = onlineResource.getHref();
        format = type.getFormat();
    }

    public String getUrl() {
        return this.url;
    }

    public String getFormat() {
        return this.format;
    }

    public void verify(ExternalGraphicType type) {
        if (type.getOnlineResource() == null || type.getInlineContent() != null) {
            throw new IllegalArgumentException("ExternalGraphics with inline content are not supported.");
        }

        if (!type.getOnlineResource().isSetHref())
            throw new IllegalArgumentException("Online resource requires href attribute.");

        if (type.getColorReplacement() == null ||
                ! type.getColorReplacement().isEmpty())
            throw new IllegalArgumentException("ExternalGraphics with color recoding are not supported.");
    }
}