PassRefPtr<Node> NamedNodeMap::setNamedItem(Node* arg, ExceptionCode& ec)
{
if (!m_element || !arg) {
ec = NOT_FOUND_ERR;
return 0;
}
// WRONG_DOCUMENT_ERR: Raised if arg was created from a different document than the one that created this map.
if (arg->document() != m_element->document()) {
ec = WRONG_DOCUMENT_ERR;
return 0;
}
// Not mentioned in spec: throw a HIERARCHY_REQUEST_ERROR if the user passes in a non-attribute node
if (!arg->isAttributeNode()) {
ec = HIERARCHY_REQUEST_ERR;
return 0;
}
Attr *attr = static_cast<Attr*>(arg);
Attribute* a = attr->attr();
Attribute* old = getAttributeItem(a->name());
if (old == a)
return RefPtr<Node>(arg); // we know about it already
// INUSE_ATTRIBUTE_ERR: Raised if arg is an Attr that is already an attribute of another Element object.
// The DOM user must explicitly clone Attr nodes to re-use them in other elements.
if (attr->ownerElement()) {
ec = INUSE_ATTRIBUTE_ERR;
return 0;
}
if (a->name() == idAttr)
m_element->updateId(old ? old->value() : nullAtom, a->value());
// ### slightly inefficient - resizes attribute array twice.
RefPtr<Node> r;
if (old) {
r = old->createAttrIfNeeded(m_element);
removeAttribute(a->name());
}
addAttribute(a);
return r.release();
}
PassRefPtr<Node> NamedNodeMap::setNamedItem(Node* node, ExceptionCode& ec)
{
if (!m_element || !node) {
ec = NOT_FOUND_ERR;
return 0;
}
// Not mentioned in spec: throw a HIERARCHY_REQUEST_ERROR if the user passes in a non-attribute node
if (!node->isAttributeNode()) {
ec = HIERARCHY_REQUEST_ERR;
return 0;
}
Attr* attr = static_cast<Attr*>(node);
Attribute* attribute = attr->attr();
size_t index = getAttributeItemIndex(attribute->name());
Attribute* oldAttribute = index != notFound ? attributeItem(index) : 0;
if (oldAttribute == attribute)
return node; // we know about it already
// INUSE_ATTRIBUTE_ERR: Raised if node is an Attr that is already an attribute of another Element object.
// The DOM user must explicitly clone Attr nodes to re-use them in other elements.
if (attr->ownerElement()) {
ec = INUSE_ATTRIBUTE_ERR;
return 0;
}
RefPtr<Attr> oldAttr;
if (oldAttribute) {
oldAttr = oldAttribute->createAttrIfNeeded(m_element);
replaceAttribute(index, attribute);
} else
addAttribute(attribute);
return oldAttr.release();
}