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DOM - Element - add support for Element.toggleAttribute()

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This commit is contained in:
janekptacijarabaci 2018-07-10 07:19:28 +02:00 • committed by Roy Tam
commit 8714f52f69
3 changed files with 40 additions and 0 deletions
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36
dom/base/Element.cpp
View file

@ -1230,6 +1230,42 @@ Element::GetAttribute(const nsAString& aName, DOMString& aReturn)
}
}
bool
Element::ToggleAttribute(const nsAString& aName,
const Optional<bool>& aForce,
ErrorResult& aError)
{
aError = nsContentUtils::CheckQName(aName, false);
if (aError.Failed()) {
return false;
}
nsAutoString nameToUse;
const nsAttrName* name = InternalGetAttrNameFromQName(aName, &nameToUse);
if (!name) {
if (aForce.WasPassed() && !aForce.Value()) {
return false;
}
nsCOMPtr<nsIAtom> nameAtom = NS_Atomize(nameToUse);
if (!nameAtom) {
aError.Throw(NS_ERROR_OUT_OF_MEMORY);
return false;
}
aError = SetAttr(kNameSpaceID_None, nameAtom, EmptyString(), true);
return true;
}
if (aForce.WasPassed() && aForce.Value()) {
return true;
}
// Hold a strong reference here so that the atom or nodeinfo doesn't go
// away during UnsetAttr. If it did UnsetAttr would be left with a
// dangling pointer as argument without knowing it.
nsAttrName tmp(*name);
aError = UnsetAttr(name->NamespaceID(), name->LocalName(), true);
return false;
}
void
Element::SetAttribute(const nsAString& aName,
const nsAString& aValue,

2
dom/base/Element.h
View file

@ -686,6 +686,8 @@ public:
void GetAttributeNS(const nsAString& aNamespaceURI,
const nsAString& aLocalName,
nsAString& aReturn);
bool ToggleAttribute(const nsAString& aName, const Optional<bool>& aForce,
ErrorResult& aError);
void SetAttribute(const nsAString& aName, const nsAString& aValue,
ErrorResult& aError);
void SetAttributeNS(const nsAString& aNamespaceURI,

2
dom/webidl/Element.webidl
View file

@ -41,6 +41,8 @@ interface Element : Node {
[Pure]
DOMString? getAttributeNS(DOMString? namespace, DOMString localName);
[Throws]
boolean toggleAttribute(DOMString name, optional boolean force);
[Throws]
void setAttribute(DOMString name, DOMString value);
[Throws]
void setAttributeNS(DOMString? namespace, DOMString name, DOMString value);