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Bug 1396568 - Make DocumentFragment::mHost a strong reference (so that ShadowRoot.host doesn't become null)

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Tag #1375
This commit is contained in:
Matt A. Tobin 2020-04-17 06:15:38 -04:00 • committed by Roy Tam
commit cc649173d2
4 changed files with 14 additions and 8 deletions
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8
dom/base/ShadowRoot.cpp
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@ -59,14 +59,14 @@ NS_INTERFACE_MAP_END_INHERITING(DocumentFragment)
NS_IMPL_ADDREF_INHERITED(ShadowRoot, DocumentFragment)
NS_IMPL_RELEASE_INHERITED(ShadowRoot, DocumentFragment)
ShadowRoot::ShadowRoot(nsIContent* aContent,
ShadowRoot::ShadowRoot(Element* aElement,
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
nsXBLPrototypeBinding* aProtoBinding)
: DocumentFragment(aNodeInfo), mPoolHost(aContent),
: DocumentFragment(aNodeInfo), mPoolHost(aElement),
mProtoBinding(aProtoBinding), mShadowElement(nullptr),
mInsertionPointChanged(false), mIsComposedDocParticipant(false)
{
SetHost(aContent);
SetHost(aElement);
// Nodes in a shadow tree should never store a value
// in the subtree root pointer, nodes in the shadow tree
@ -75,7 +75,7 @@ ShadowRoot::ShadowRoot(nsIContent* aContent,
SetFlags(NODE_IS_IN_SHADOW_TREE);
ExtendedDOMSlots()->mBindingParent = aContent;
ExtendedDOMSlots()->mBindingParent = aElement;
ExtendedDOMSlots()->mContainingShadow = this;
// Add the ShadowRoot as a mutation observer on the host to watch