SVGSVGElement::~SVGSVGElement()
{
if (m_viewSpec)
m_viewSpec->detachContextElement();
// There are cases where removedFromDocument() is not called.
// see ContainerNode::removeAllChildren, called by its destructor.
document().accessSVGExtensions()->removeTimeContainer(this);
ASSERT(inDocument() || !accessDocumentSVGExtensions()->isSVGRootWithRelativeLengthDescendents(this));
}
void SVGElement::updateRelativeLengthsInformation(bool clientHasRelativeLengths, SVGElement* clientElement)
{
ASSERT(clientElement);
// If we're not yet in a document, this function will be called again from insertedInto(). Do nothing now.
if (!inDocument())
return;
// An element wants to notify us that its own relative lengths state changed.
// Register it in the relative length map, and register us in the parent relative length map.
// Register the parent in the grandparents map, etc. Repeat procedure until the root of the SVG tree.
for (ContainerNode* currentNode = this; currentNode && currentNode->isSVGElement(); currentNode = currentNode->parentNode()) {
SVGElement* currentElement = toSVGElement(currentNode);
ASSERT(!currentElement->m_inRelativeLengthClientsInvalidation);
bool hadRelativeLengths = currentElement->hasRelativeLengths();
if (clientHasRelativeLengths)
currentElement->m_elementsWithRelativeLengths.add(clientElement);
else
currentElement->m_elementsWithRelativeLengths.remove(clientElement);
// If the relative length state hasn't changed, we can stop propagating the notification.
if (hadRelativeLengths == currentElement->hasRelativeLengths())
return;
clientElement = currentElement;
clientHasRelativeLengths = clientElement->hasRelativeLengths();
}
// Register root SVG elements for top level viewport change notifications.
if (isSVGSVGElement(*clientElement)) {
SVGDocumentExtensions& svgExtensions = accessDocumentSVGExtensions();
if (clientElement->hasRelativeLengths())
svgExtensions.addSVGRootWithRelativeLengthDescendents(toSVGSVGElement(clientElement));
else
svgExtensions.removeSVGRootWithRelativeLengthDescendents(toSVGSVGElement(clientElement));
}
}