// The DOM2 spec doesn't say that removeAttribute[NS] throws NOT_FOUND_ERR
// if the attribute is not found, but at this level we have to throw NOT_FOUND_ERR
// because of removeNamedItem, removeNamedItemNS, and removeAttributeNode.
Node NamedAttrMapImpl::removeNamedItem ( NodeImpl::Id id, int &exceptioncode )
{
// ### should this really be raised when the attribute to remove isn't there at all?
// NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly
if (isReadOnly()) {
exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
return Node();
}
AttributeImpl* a = getAttributeItem(id);
if (!a) {
exceptioncode = DOMException::NOT_FOUND_ERR;
return Node();
}
if (!a->attrImpl()) a->allocateImpl(element);
Node r(a->attrImpl());
if (id == ATTR_ID) {
element->updateId(a->value(), nullAtom);
}
removeAttribute(id);
return r;
}
AttrImpl *NamedAttrMapImpl::getNamedItem ( NodeImpl::Id id ) const
{
AttributeImpl* a = getAttributeItem(id);
if (!a) return 0;
if (!a->attrImpl())
a->allocateImpl(element);
return a->attrImpl();
}
Node NamedAttrMapImpl::setNamedItem ( NodeImpl* arg, int &exceptioncode )
{
if (!element) {
exceptioncode = DOMException::NOT_FOUND_ERR;
return 0;
}
// NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly.
if (isReadOnly()) {
exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
return 0;
}
// WRONG_DOCUMENT_ERR: Raised if arg was created from a different document than the one that created this map.
if (arg->getDocument() != element->getDocument()) {
exceptioncode = DOMException::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()) {
exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
return 0;
}
AttrImpl *attr = static_cast<AttrImpl*>(arg);
AttributeImpl* a = attr->attrImpl();
AttributeImpl* old = getAttributeItem(a->id());
if (old == a) return 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()) {
exceptioncode = DOMException::INUSE_ATTRIBUTE_ERR;
return 0;
}
if (a->id() == ATTR_ID) {
element->updateId(old ? old->value() : nullAtom, a->value());
}
// ### slightly inefficient - resizes attribute array twice.
Node r;
if (old) {
if (!old->attrImpl())
old->allocateImpl(element);
r = old->_impl;
removeAttribute(a->id());
}
addAttribute(a);
return r;
}