/**********************************************
* Copyright (C) 2010 Lukas Laag
* This file is part of lib-gwt-svg.
*
* libgwtsvg 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.
*
* libgwtsvg 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 libgwtsvg. If not, see http://www.gnu.org/licenses/
**********************************************/
package org.vectomatic.dom.svg.impl;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.vectomatic.dom.svg.OMSVGScriptElement;
import org.vectomatic.dom.svg.utils.DOMHelper;
import org.vectomatic.dom.svg.utils.ParserException;
import org.vectomatic.dom.svg.utils.SVGPrefixResolver;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.Node;
import com.google.gwt.dom.client.Text;
/**
* Internal class to wrap DOM parser implementations for mozilla
* @author laaglu
*/
public class SVGParserImplMozilla extends SVGParserImpl {
/**
* Parses the supplied SVG text into a document
* @param rawSvg
* raw xml to be parsed
* @return
* the document resulting from the parse
*/
public final SVGSVGElement parse(String rawSvg) throws ParserException {
SVGDocument doc = parseFromString(rawSvg, "text/xml").cast();
Element elt = doc.getDocumentElement();
if ("parsererror".equals(DOMHelper.getLocalName(elt))) {
String message = "Parsing error";
if (elt.getFirstChild() != null) {
message = elt.getFirstChild().<Text>cast().getData();
}
throw new ParserException(ParserException.Type.NotWellFormed, message);
}
SVGSVGElement svg = DOMHelper.importNode(DOMHelper.getCurrentDocument(), elt, true).cast();
// For some reason xlink:href are not correctly evaluated in
// some cases in mozilla. If one clones the node this seems
// to solve the problem
return fixScriptElements(svg.cloneNode(true).<SVGSVGElement>cast());
}
private static SVGSVGElement fixScriptElements(SVGSVGElement svg) {
// Put all scripts in a list (XPath result sets cannot be modified during traversal).
List<SVGScriptElement> scripts = new ArrayList<SVGScriptElement>();
Iterator<Node> iterator = DOMHelper.evaluateNodeListXPath(svg, "//svg:script", SVGPrefixResolver.INSTANCE);
while (iterator.hasNext()) {
scripts.add(iterator.next().<SVGScriptElement>cast());
}
for (SVGScriptElement script : scripts) {
// Reparent the script subtree under a fresh script node
SVGScriptElement newScript = new OMSVGScriptElement().getElement().<SVGScriptElement>cast();
Node node;
while((node = script.getFirstChild()) != null) {
newScript.appendChild(script.removeChild(node));
}
script.getParentNode().replaceChild(newScript, script);
}
return svg;
}
}