PassRefPtr<StaticNodeList> createSelectorNodeList(Node* rootNode, const CSSSelectorList& querySelectorList) { Vector<RefPtr<Node> > nodes; Document* document = rootNode->document(); CSSSelector* onlySelector = querySelectorList.hasOneSelector() ? querySelectorList.first() : 0; bool strictParsing = !document->inCompatMode(); CSSStyleSelector::SelectorChecker selectorChecker(document, strictParsing); if (strictParsing && rootNode->inDocument() && onlySelector && onlySelector->m_match == CSSSelector::Id && !document->containsMultipleElementsWithId(onlySelector->m_value)) { Element* element = document->getElementById(onlySelector->m_value); if (element && (rootNode->isDocumentNode() || element->isDescendantOf(rootNode)) && selectorChecker.checkSelector(onlySelector, element)) nodes.append(element); } else { for (Node* n = rootNode->firstChild(); n; n = n->traverseNextNode(rootNode)) { if (n->isElementNode()) { Element* element = static_cast<Element*>(n); for (CSSSelector* selector = querySelectorList.first(); selector; selector = CSSSelectorList::next(selector)) { if (selectorChecker.checkSelector(selector, element)) { nodes.append(n); break; } } } } } return StaticNodeList::adopt(nodes); }