Node* HTMLCollection::namedItem(const AtomicString& name) const
{
// http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/nameditem.asp
// This method first searches for an object with a matching id
// attribute. If a match is not found, the method then searches for an
// object with a matching name attribute, but only on those elements
// that are allowed a name attribute.
ContainerNode* root = rootContainerNode();
if (name.isEmpty() || !root)
return 0;
if (!overridesItemAfter() && root->isInTreeScope()) {
TreeScope* treeScope = root->treeScope();
Element* candidate = 0;
if (treeScope->hasElementWithId(name.impl())) {
if (!treeScope->containsMultipleElementsWithId(name))
candidate = treeScope->getElementById(name);
} else if (treeScope->hasElementWithName(name.impl())) {
if (!treeScope->containsMultipleElementsWithName(name)) {
candidate = treeScope->getElementByName(name);
if (candidate && type() == DocAll && (!candidate->isHTMLElement() || !nameShouldBeVisibleInDocumentAll(toHTMLElement(candidate))))
candidate = 0;
}
} else
return 0;
if (candidate
&& isMatchingElement(this, candidate)
&& (shouldOnlyIncludeDirectChildren() ? candidate->parentNode() == root : candidate->isDescendantOf(root)))
return candidate;
}
// The pathological case. We need to walk the entire subtree.
updateNameCache();
if (Vector<Element*>* idResults = idCache(name)) {
if (idResults->size())
return idResults->at(0);
}
if (Vector<Element*>* nameResults = nameCache(name)) {
if (nameResults->size())
return nameResults->at(0);
}
return 0;
}
PassRefPtr<FilterEffect> ReferenceFilterBuilder::build(Filter* parentFilter, RenderObject* renderer, FilterEffect* previousEffect, const ReferenceFilterOperation* filterOperation)
{
if (!renderer)
return nullptr;
TreeScope* treeScope = &renderer->node()->treeScope();
if (DocumentResourceReference* documentResourceRef = documentResourceReference(filterOperation)) {
DocumentResource* cachedSVGDocument = documentResourceRef->document();
// If we have an SVG document, this is an external reference. Otherwise
// we look up the referenced node in the current document.
if (cachedSVGDocument)
treeScope = cachedSVGDocument->document();
}
if (!treeScope)
return nullptr;
Element* filter = treeScope->getElementById(filterOperation->fragment());
if (!filter) {
// Although we did not find the referenced filter, it might exist later
// in the document.
treeScope->document().accessSVGExtensions().addPendingResource(filterOperation->fragment(), toElement(renderer->node()));
return nullptr;
}
if (!isSVGFilterElement(*filter))
return nullptr;
SVGFilterElement& filterElement = toSVGFilterElement(*filter);
// FIXME: Figure out what to do with SourceAlpha. Right now, we're
// using the alpha of the original input layer, which is obviously
// wrong. We should probably be extracting the alpha from the
// previousEffect, but this requires some more processing.
// This may need a spec clarification.
RefPtr<SVGFilterBuilder> builder = SVGFilterBuilder::create(previousEffect, SourceAlpha::create(parentFilter));
ColorSpace filterColorSpace = ColorSpaceDeviceRGB;
bool useFilterColorSpace = getSVGElementColorSpace(&filterElement, filterColorSpace);
for (SVGElement* element = Traversal<SVGElement>::firstChild(filterElement); element; element = Traversal<SVGElement>::nextSibling(*element)) {
if (!element->isFilterEffect())
continue;
SVGFilterPrimitiveStandardAttributes* effectElement = static_cast<SVGFilterPrimitiveStandardAttributes*>(element);
RefPtr<FilterEffect> effect = effectElement->build(builder.get(), parentFilter);
if (!effect)
continue;
effectElement->setStandardAttributes(effect.get());
effect->setEffectBoundaries(SVGLengthContext::resolveRectangle<SVGFilterPrimitiveStandardAttributes>(effectElement, filterElement.primitiveUnits()->currentValue()->enumValue(), parentFilter->sourceImageRect()));
ColorSpace colorSpace = filterColorSpace;
if (useFilterColorSpace || getSVGElementColorSpace(effectElement, colorSpace))
effect->setOperatingColorSpace(colorSpace);
builder->add(AtomicString(effectElement->result()->currentValue()->value()), effect);
}
return builder->lastEffect();
}
PassRefPtrWillBeRawPtr<ShadowRoot> createShadowRootForElementWithIDAndSetInnerHTML(TreeScope& scope, const char* hostElementID, const char* shadowRootContent)
{
RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = scope.getElementById(AtomicString::fromUTF8(hostElementID))->createShadowRoot(ASSERT_NO_EXCEPTION);
shadowRoot->setInnerHTML(String::fromUTF8(shadowRootContent), ASSERT_NO_EXCEPTION);
return shadowRoot.release();
}