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LibWeb: Skip unneeded style invalidation on custom element state change

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If there are no :defined pseudo-class selectors anywhere in the
document, we don't have to invalidate style at all when an element's
custom element state changes.
This commit is contained in:
Andreas Kling
2024-12-25 00:52:36 +01:00
committed by Andreas Kling
parent 202bf901d7
commit f45e24864b
3 changed files with 14 additions and 1 deletions
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4
Libraries/LibWeb/DOM/Element.cpp
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@@ -2266,7 +2266,9 @@ void Element::set_custom_element_state(CustomElementState state)
if (m_custom_element_state == state)
return;
m_custom_element_state = state;
invalidate_style(StyleInvalidationReason::CustomElementStateChange);
if (document().style_computer().has_defined_selectors())
invalidate_style(StyleInvalidationReason::CustomElementStateChange);
}
// https://html.spec.whatwg.org/multipage/dom.html#html-element-constructors