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Update element adoption logic for scoped registry #1437

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Update element adoption logic for scoped registry #1437

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cfc5109
Modify element adoption SCER
Dec 2, 2025
1dc85e4
Use effective global custom element registry as discussed
Dec 2, 2025
697020b
Update steps
Dec 2, 2025
ee404fe
Fix indentation
Dec 2, 2025
a334c2a
Fix fix indentation
Dec 2, 2025
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42 changes: 29 additions & 13 deletions dom.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -4891,7 +4891,7 @@ and an optional <a for=/>document</a> <dfn export for="clone a node"><var>docume

<li><p>If <var>shadowRootRegistry</var> <a>is a global custom element registry</a>, then set
<var>shadowRootRegistry</var> to <var>document</var>'s
<a>effective global custom element registry</a>.
<a for=Document>custom element registry</a>'s <a>effective global custom element registry</a>.

<li><p><a>Attach a shadow root</a> with <var>copy</var>, <var>node</var>'s
<a for=Element>shadow root</a>'s <a for=ShadowRoot>mode</a>, true, <var>node</var>'s
Expand Down Expand Up @@ -4936,7 +4936,8 @@ and an optional <a for=/>document</a> <dfn export for="clone a node"><var>docume
<var>fallbackRegistry</var>.

<li><p>If <var>registry</var> <a>is a global custom element registry</a>, then set
<var>registry</var> to <var>document</var>'s <a>effective global custom element registry</a>.
<var>registry</var> to <var>document</var>'s <a for=Document>custom element registry</a>
<a>effective global custom element registry</a>.

<li><p>Set <var>copy</var> to the result of <a>creating an element</a>, given
<var>document</var>, <var>node</var>'s <a for=Element>local name</a>, <var>node</var>'s
Expand Down Expand Up @@ -6071,7 +6072,8 @@ algorithm is passed <var ignore>node</var> and <var ignore>oldDocument</var>, as
</ul>

<p>then set <var>inclusiveDescendant</var>'s <a for=ShadowRoot>custom element registry</a> to
<var>document</var>'s <a>effective global custom element registry</a>.
<var>document</var>'s <a for=Document>custom element registry</a>'s
<a>effective global custom element registry</a>.

<li>
<p>Otherwise, if <var>inclusiveDescendant</var> is an <a for=/>element</a>:
Expand All @@ -6080,11 +6082,26 @@ algorithm is passed <var ignore>node</var> and <var ignore>oldDocument</var>, as
<li><p>Set the <a for=Node>node document</a> of each <a>attribute</a> in
<var>inclusiveDescendant</var>'s <a for=Element>attribute list</a> to <var>document</var>.

<li><p>If <var>inclusiveDescendant</var>'s <a for=Element>custom element registry</a> is null
or <var>inclusiveDescendant</var>'s <a for=Element>custom element registry</a>'s
<a for=CustomElementRegistry>is scoped</a> is false, then set
<var>inclusiveDescendant</var>'s <a for=Element>custom element registry</a> to
<var>document</var>'s <a>effective global custom element registry</a>.
<li>
<p>If <var>inclusiveDescendant</var>'s <a for=Element>custom element registry</a> is null
or <var>inclusiveDescendant</var>'s <a for=Element>custom element registry</a>'s
<a for=CustomElementRegistry>is scoped</a> is false:

<ol>
<li><p>Let <var>registry</var> be null.

<li><p>If <var>inclusiveDescendant</var>'s <a for=tree>parent</a> is null or
<var>inclusiveDescendant</var>'s <a for=tree>parent</a> is a {{DocumentFragment}} but not
a {{ShadowRoot}}, then set <var>registry</var> to <var>document</var>'s
<a for=Document>custom element registry</a>.

<li><p>Otherwise, set <var>registry</var> to the result of
<a for=/>looking up a custom element registry</a> given <var>inclusiveDescendant</var>'s
<a for=tree>parent</a>.

<li><p>Set <var>inclusiveDescendant</var>'s <a for=Element>custom element registry</a>
to <var>registry</var>'s <a>effective global custom element registry</a>.
</ol>
</ol>
</ol>

Expand Down Expand Up @@ -6127,13 +6144,12 @@ algorithm is passed <var ignore>node</var> and <var ignore>oldDocument</var>, as
<dfn>is a global custom element registry</dfn> if <var>registry</var> is non-null and
<var>registry</var>'s <a for=CustomElementRegistry>is scoped</a> is false.</p>

<p>A <a for=/>document</a> <var>document</var>'s <dfn>effective global custom element registry</dfn>
is:
<p>Null or a {{CustomElementRegistry}} object <var>registry</var>'s
<dfn>effective global custom element registry</dfn> is:

<ol>
<li><p>If <var>document</var>'s <a for=Document>custom element registry</a>
<a>is a global custom element registry</a>, then return <var>document</var>'s
<a for=Document>custom element registry</a>.
<li><p>If <var>registry</var> <a>is a global custom element registry</a>, then return
<var>registry</var>.

<li><p>Return null.
</ol>
Expand Down