本文整理汇总了C++中Attr::NodeInfo方法的典型用法代码示例。如果您正苦于以下问题：C++ Attr::NodeInfo方法的具体用法？C++ Attr::NodeInfo怎么用？C++ Attr::NodeInfo使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Attr的用法示例。
在下文中一共展示了Attr::NodeInfo方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: attrkey
already_AddRefed<Attr>
nsDOMAttributeMap::SetNamedItemInternal(Attr& aAttr,
bool aWithNS,
ErrorResult& aError)
{
NS_ENSURE_TRUE(mContent, nullptr);
// XXX should check same-origin between mContent and aAttr however
// nsContentUtils::CheckSameOrigin can't deal with attributenodes yet
// Check that attribute is not owned by somebody else
nsDOMAttributeMap* owner = aAttr.GetMap();
if (owner) {
if (owner != this) {
aError.Throw(NS_ERROR_DOM_INUSE_ATTRIBUTE_ERR);
return nullptr;
}
// setting a preexisting attribute is a no-op, just return the same
// node.
nsRefPtr<Attr> attribute = &aAttr;
return attribute.forget();
}
nsresult rv;
if (!mContent->HasSameOwnerDoc(&aAttr)) {
nsCOMPtr<nsINode> adoptedNode =
mContent->OwnerDoc()->AdoptNode(aAttr, aError);
if (aError.Failed()) {
return nullptr;
}
NS_ASSERTION(adoptedNode == &aAttr, "Uh, adopt node changed nodes?");
}
// Get nodeinfo and preexisting attribute (if it exists)
nsAutoString name;
nsCOMPtr<nsINodeInfo> ni;
nsRefPtr<Attr> attr;
// SetNamedItemNS()
if (aWithNS) {
// Return existing attribute, if present
ni = aAttr.NodeInfo();
if (mContent->HasAttr(ni->NamespaceID(), ni->NameAtom())) {
attr = RemoveAttribute(ni);
}
} else { // SetNamedItem()
aAttr.GetName(name);
// get node-info of old attribute
ni = mContent->GetExistingAttrNameFromQName(name);
if (ni) {
attr = RemoveAttribute(ni);
}
else {
if (mContent->IsInHTMLDocument() &&
mContent->IsHTML()) {
nsContentUtils::ASCIIToLower(name);
}
rv = mContent->NodeInfo()->NodeInfoManager()->
GetNodeInfo(name, nullptr, kNameSpaceID_None,
nsIDOMNode::ATTRIBUTE_NODE, getter_AddRefs(ni));
if (NS_FAILED(rv)) {
aError.Throw(rv);
return nullptr;
}
// value is already empty
}
}
nsAutoString value;
aAttr.GetValue(value);
// Add the new attribute to the attribute map before updating
// its value in the element. @see bug 364413.
nsAttrKey attrkey(ni->NamespaceID(), ni->NameAtom());
mAttributeCache.Put(attrkey, &aAttr);
aAttr.SetMap(this);
rv = mContent->SetAttr(ni->NamespaceID(), ni->NameAtom(),
ni->GetPrefixAtom(), value, true);
if (NS_FAILED(rv)) {
aError.Throw(rv);
DropAttribute(ni->NamespaceID(), ni->NameAtom());
}
return attr.forget();
}