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LibWeb: Invalidate style if url changed in HTMLHyperlinkElementUtils

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Previously, <a> elements were frequently invalidated because
`set_the_url()` was called by `reinitialize_url()`, which is a
preparation step in every HTMLHyperlinkElementUtils function. As a
result, styles were unnecessarily invalidated each time any of these
functions were invoked without changing the URL.
This commit is contained in:
Aliaksandr Kalenik 2025-01-10 16:13:35 +03:00 committed by Tim Ledbetter
parent 84b69c2387
commit de062e4d2c
1 changed files with 6 additions and 3 deletions
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9
Libraries/LibWeb/HTML/HTMLHyperlinkElementUtils.cpp
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@ -28,13 +28,18 @@ void HTMLHyperlinkElementUtils::reinitialize_url() const
// https://html.spec.whatwg.org/multipage/links.html#concept-hyperlink-url-set
void HTMLHyperlinkElementUtils::set_the_url()
{
ScopeGuard invalidate_style_if_needed = [old_url = m_url, this] {
if (m_url != old_url) {
hyperlink_element_utils_element().invalidate_style(DOM::StyleInvalidationReason::HTMLHyperlinkElementHrefChange);
}
};
// 1. Set this element's url to null.
m_url = {};
// 2. If this element's href content attribute is absent, then return.
auto href_content_attribute = hyperlink_element_utils_href();
if (!href_content_attribute.has_value()) {
hyperlink_element_utils_element().invalidate_style(DOM::StyleInvalidationReason::HTMLHyperlinkElementHrefChange);
return;
}
@ -44,8 +49,6 @@ void HTMLHyperlinkElementUtils::set_the_url()
// 4. If url is not failure, then set this element's url to url.
if (url.is_valid())
m_url = move(url);
hyperlink_element_utils_element().invalidate_style(DOM::StyleInvalidationReason::HTMLHyperlinkElementHrefChange);
}
// https://html.spec.whatwg.org/multipage/links.html#dom-hyperlink-origin