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Bug 1411878 - Support Element.shadowRoot and Element.assignedSlot / TextNode.assignedSlot on closed shadow root

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Tag #1375
This commit is contained in:
Matt A. Tobin 2020-04-17 07:05:27 -04:00 • committed by Roy Tam
commit 31b26a24e3
8 changed files with 67 additions and 11 deletions
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19
dom/base/Element.cpp
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@ -1104,6 +1104,25 @@ Element::GetSlot(nsAString& aName)
GetAttr(kNameSpaceID_None, nsGkAtoms::slot, aName);
}
// https://dom.spec.whatwg.org/#dom-element-shadowroot
ShadowRoot*
Element::GetShadowRootByMode() const
{
/**
* 1. Let shadow be context object’s shadow root.
* 2. If shadow is null or its mode is "closed", then return null.
*/
ShadowRoot* shadowRoot = GetShadowRoot();
if (!shadowRoot || shadowRoot->IsClosed()) {
return nullptr;
}
/**
* 3. Return shadow.
*/
return shadowRoot;
}
// https://dom.spec.whatwg.org/#dom-element-attachshadow
already_AddRefed<ShadowRoot>
Element::AttachShadow(const ShadowRootInit& aInit, ErrorResult& aError)