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Enforce same parameters for attachShadow on declarative shadow root #1246

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merged 8 commits into from
Feb 16, 2024
Merged

Enforce same parameters for attachShadow on declarative shadow root #1246

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cbad36e
Just assert that a cloned node is not a shadow host
mfreed7 Jan 16, 2024
3b3e70a
Enforce same parameters for attachShadow on declarative shadow root
mfreed7 Jan 16, 2024
13198db
Address comments
mfreed7 Jan 27, 2024
1c63c4f
Address comments
mfreed7 Jan 29, 2024
149f31c
Fix slotAssignment to be a string
mfreed7 Feb 2, 2024
1c0b37c
Remove checks except for mode
mfreed7 Feb 10, 2024
16dcb39
Address comments
mfreed7 Feb 15, 2024
30a0f3b
nits
annevk Feb 15, 2024
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28 changes: 18 additions & 10 deletions dom.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -4502,6 +4502,8 @@ dom-Range-extractContents, dom-Range-cloneContents -->
<a for=ShadowRoot>clonable</a> is true:

<ol>
<li><p>Assert: <var>copy</var> is not a <a for=Element>shadow host</a>.
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(It's weird that this has for=Element, but that's a pre-existing issue.)

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Want me to change something?

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If you want to take it on, it should be a separate PR making it a standalone term that doesn't belong to Element.


<li><p>Run <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
<a for=Element>shadow root</a>'s <a for=ShadowRoot>delegates focus</a>, and <var>node</var>'s
Expand Down Expand Up @@ -6929,7 +6931,7 @@ are:
<div algorithm>
<p>To <dfn id=concept-attach-a-shadow-root>attach a shadow root</dfn>, given an
<a for=/>element</a> <var>element</var>, a string <var>mode</var>, a boolean <var>clonable</var>,
a boolean <var>delegatesFocus</var>, and a boolean <var>slotAssignment</var>:
a boolean <var>delegatesFocus</var>, and a string <var>slotAssignment</var>:
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<ol>
<li><p>If <var>element</var>'s <a for=Element>namespace</a> is not the <a>HTML namespace</a>,
Expand Down Expand Up @@ -6958,24 +6960,30 @@ a boolean <var>delegatesFocus</var>, and a boolean <var>slotAssignment</var>:
<p>If <var>element</var> is a <a for=Element>shadow host</a>, then:

<ol>
<li><p>If <var>element</var>'s <a for=Element>shadow root</a>'s <a for=ShadowRoot>declarative</a>
is false, then <a>throw</a> an "{{NotSupportedError!!exception}}" {{DOMException}}.
<li><p>Let <var>currentShadowRoot</var> be <var>element</var>'s <a for=Element>shadow root</a>.

<li>
<p>If any of the following are true:

<ul>
<li><p><var>currentShadowRoot</var>'s <a for=ShadowRoot>declarative</a> is false; or

<li><p><var>currentShadowRoot</var>'s <a for=ShadowRoot>mode</a> is not <var>mode</var>,
</ul>

<p>then <a>throw</a> a "{{NotSupportedError!!exception}}" {{DOMException}}.

<li>
<p>Otherwise:

<ol>
<li><p><a for=/>Remove</a> all of <var>element</var>'s <a for=Element>shadow root</a>'s
<a for=tree>children</a>, in <a>tree order</a>.
<li><p><a for=/>Remove</a> all of <var>currentShadowRoot</var>'s <a for=tree>children</a>, in
<a>tree order</a>.

<li><p>Set <var>element</var>'s <a for=Element>shadow root</a>'s
<a for=ShadowRoot>declarative</a> to false.
<li><p>Set <var>currentShadowRoot</var>'s <a for=ShadowRoot>declarative</a> to false.

<li><p>Return.
</ol>

<p class=note>This means that if multiple declarative shadow roots are contained within a single
shadow host, only the last one will remain.
</ol>

<li><p>Let <var>shadow</var> be a new <a for=/>shadow root</a> whose <a for=Node>node document</a>
Expand Down
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