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[cssom] Add a “disable a CSS style sheet” definition #9414

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[cssom] Add a “disable a CSS style sheet” definition #9414

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13 changes: 13 additions & 0 deletions cssom-1/Overview.bs
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Expand Up @@ -1197,6 +1197,19 @@ To <dfn export>remove a CSS style sheet</dfn>, run these steps:
<!-- XXX does anything need to happen wrt alternate style sheets? what if the last style sheet with the preferred style sheet set name is removed? -->
</ol>

To <dfn export>disable a CSS style sheet</dfn>, run these steps:

<ol>
<li>Remove the <a>CSS style sheet</a> from the list of <a>document or shadow root CSS style sheets</a>.

<li>Set the <a>CSS style sheet</a>'s <a for=CSSStyleSheet>parent CSS style sheet</a>,
<a for=CSSStyleSheet>owner node</a> and <a for=CSSStyleSheet>owner CSS rule</a> to null.

<!-- "associated CSS style sheet" is defined in terms of owner node, so we don't need to set it to null explicitly -->

<li>Set the <a>disabled flag</a>.
</ol>

A <dfn export>persistent CSS style sheet</dfn> is a
<a>CSS style sheet</a> from the <a>document or shadow root CSS style sheets</a>
whose <a>title</a> is the empty string and whose
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