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package de.lmu.ifi.dbs.elki.visualization.svg;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2015
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import org.apache.batik.util.SVGConstants;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import de.lmu.ifi.dbs.elki.utilities.xml.DOMCloner;
/**
* Clone visible parts of an SVG document.
*
* @author Erich Schubert
*/
public class SVGCloneVisible extends DOMCloner {
@Override
public Node cloneNode(Document doc, Node eold) {
// Skip elements with visibility=hidden
if(eold instanceof Element) {
Element eeold = (Element) eold;
String vis = eeold.getAttribute(SVGConstants.CSS_VISIBILITY_PROPERTY);
if(SVGConstants.CSS_HIDDEN_VALUE.equals(vis)) {
return null;
}
}
// Perform clone flat
Node enew = doc.importNode(eold, false);
// Recurse:
for(Node n = eold.getFirstChild(); n != null; n = n.getNextSibling()) {
final Node clone = cloneNode(doc, n);
if (clone != null) {
enew.appendChild(clone);
}
}
return enew;
}
}
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