void SVGUseElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGGraphicsElement::svgAttributeChanged(attrName);
return;
}
SVGElementInstance::InvalidationGuard invalidationGuard(this);
auto renderer = this->renderer();
if (attrName == SVGNames::xAttr
|| attrName == SVGNames::yAttr
|| attrName == SVGNames::widthAttr
|| attrName == SVGNames::heightAttr) {
updateRelativeLengthsInformation();
if (renderer)
RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer);
return;
}
if (SVGExternalResourcesRequired::handleAttributeChange(this, attrName))
return;
if (SVGURIReference::isKnownAttribute(attrName)) {
bool isExternalReference = isExternalURIReference(href(), document());
if (isExternalReference) {
URL url = document().completeURL(href());
if (url.hasFragmentIdentifier()) {
CachedResourceRequest request(ResourceRequest(url.string()));
request.setInitiator(this);
setCachedDocument(document().cachedResourceLoader()->requestSVGDocument(request));
}
} else
setCachedDocument(0);
if (!m_wasInsertedByParser)
buildPendingResource();
return;
}
if (SVGLangSpace::isKnownAttribute(attrName)
|| SVGExternalResourcesRequired::isKnownAttribute(attrName)) {
invalidateShadowTree();
return;
}
ASSERT_NOT_REACHED();
}
SVGUseElement::~SVGUseElement()
{
setCachedDocument(0);
clearResourceReferences();
}