bool SVGElement::rendererIsNeeded(const RenderStyle& style)
{
// http://www.w3.org/TR/SVG/extend.html#PrivateData
// Prevent anything other than SVG renderers from appearing in our render tree
// Spec: SVG allows inclusion of elements from foreign namespaces anywhere
// with the SVG content. In general, the SVG user agent will include the unknown
// elements in the DOM but will otherwise ignore unknown elements.
if (!parentOrShadowHostElement() || parentOrShadowHostElement()->isSVGElement())
return Element::rendererIsNeeded(style);
return false;
}
void PseudoElement::dispose()
{
ASSERT(parentOrShadowHostElement());
InspectorInstrumentation::pseudoElementDestroyed(this);
ASSERT(!nextSibling());
ASSERT(!previousSibling());
detach();
RefPtr<Element> parent = parentOrShadowHostElement();
setParentOrShadowHostNode(0);
removedFrom(parent.get());
}
void PseudoElement::dispose() {
DCHECK(parentOrShadowHostElement());
InspectorInstrumentation::pseudoElementDestroyed(this);
DCHECK(!nextSibling());
DCHECK(!previousSibling());
detachLayoutTree();
Element* parent = parentOrShadowHostElement();
document().adoptIfNeeded(*this);
setParentOrShadowHostNode(0);
removedFrom(parent);
}
SVGElement* SVGGraphicsElement::farthestViewportElement() const
{
SVGElement* farthest = 0;
for (Element* current = parentOrShadowHostElement(); current; current = current->parentOrShadowHostElement()) {
if (isViewportElement(*current))
farthest = toSVGElement(current);
}
return farthest;
}
SVGElement* SVGGraphicsElement::nearestViewportElement() const
{
for (Element* current = parentOrShadowHostElement(); current; current = current->parentOrShadowHostElement()) {
if (isViewportElement(*current))
return toSVGElement(current);
}
return nullptr;
}
bool SVGElement::isOutermostSVGSVGElement() const
{
if (!isSVGSVGElement(*this))
return false;
// Element may not be in the document, pretend we're outermost for viewport(), getCTM(), etc.
if (!parentNode())
return true;
// We act like an outermost SVG element, if we're a direct child of a <foreignObject> element.
if (isSVGForeignObjectElement(*parentNode()))
return true;
// If we're living in a shadow tree, we're a <svg> element that got created as replacement
// for a <symbol> element or a cloned <svg> element in the referenced tree. In that case
// we're always an inner <svg> element.
if (inUseShadowTree() && parentOrShadowHostElement() && parentOrShadowHostElement()->isSVGElement())
return false;
// This is true whenever this is the outermost SVG, even if there are HTML elements outside it
return !parentNode()->isSVGElement();
}
PassRefPtr<ComputedStyle> PseudoElement::customStyleForLayoutObject()
{
return parentOrShadowHostElement()->layoutObject()->getCachedPseudoStyle(m_pseudoId);
}
PassRefPtr<RenderStyle> PseudoElement::customStyleForRenderer()
{
return parentOrShadowHostElement()->renderer()->getCachedPseudoStyle(m_pseudoId);
}
bool SVGGElement::rendererIsNeeded(const RenderStyle&)
{
// Unlike SVGElement::rendererIsNeeded(), we still create renderers, even if
// display is set to 'none' - which is special to SVG <g> container elements.
return parentOrShadowHostElement() && parentOrShadowHostElement()->isSVGElement();
}
