sources/org/apache/batik/dom/svg/SVGExternalResourcesRequiredSupport.java

/*

   Copyright 2000-2003  The Apache Software Foundation 

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 */
package org.apache.batik.dom.svg;

import org.apache.batik.util.SVGConstants;
import org.w3c.dom.svg.SVGAnimatedBoolean;

/**
 * Provides support for the SVGExternalResourcesRequired interface.
 *
 * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
 * @version $Id$
 */
public class SVGExternalResourcesRequiredSupport implements SVGConstants {

    private final static String ATTR_NAME =
        SVG_EXTERNAL_RESOURCES_REQUIRED_ATTRIBUTE;

    /**
     * To implement {@link
     * org.w3c.dom.svg.SVGExternalResourcesRequired#getExternalResourcesRequired()}.
     */
    public static SVGAnimatedBoolean
        getExternalResourcesRequired(AbstractElement elt) {
        LiveAttributeValue lav;
        lav = elt.getLiveAttributeValue(null, ATTR_NAME);
        if (lav == null) {
            lav = new SVGOMAnimatedBoolean(elt, null, ATTR_NAME,
                                           elt.getAttributeNodeNS(null,
                                                                  ATTR_NAME),
                                           "false");
            elt.putLiveAttributeValue(null, ATTR_NAME, lav);
        }
        return (SVGAnimatedBoolean)lav;
    }
}