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-rw-r--r--dom/base/Element.cpp36
-rw-r--r--dom/base/Element.h2
-rw-r--r--dom/webidl/Element.webidl2
3 files changed, 40 insertions, 0 deletions
diff --git a/dom/base/Element.cpp b/dom/base/Element.cpp
index 52d06b0f8..79b36a314 100644
--- a/dom/base/Element.cpp
+++ b/dom/base/Element.cpp
@@ -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,
diff --git a/dom/base/Element.h b/dom/base/Element.h
index 049984d1b..c269ab14a 100644
--- a/dom/base/Element.h
+++ b/dom/base/Element.h
@@ -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,
diff --git a/dom/webidl/Element.webidl b/dom/webidl/Element.webidl
index ca5f1b35c..97eb4ffe0 100644
--- a/dom/webidl/Element.webidl
+++ b/dom/webidl/Element.webidl
@@ -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);