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Code Issues Projects Releases Packages Wiki Activity Actions 11

LibWeb: Implement functional pseudo-element parsing

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"Functional" as in "it's a function token" and not "it works", because
the behaviour for these is unimplemented. :^)

This is modeled after the pseudo-class parsing, but with some changes
based on things I don't like about that implementation. I've
implemented the `<pt-name-selector>` parameter used by view-transitions
for now, but nothing else.
This commit is contained in:
Sam Atkins 2025-03-24 13:56:24 +00:00 • committed by Andreas Kling
parent 5cf04a33ad
commit 88e11eea2d
Notes: github-actions[bot] 2025-03-25 07:56:12 +00:00
8 changed files with 237 additions and 43 deletions
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30
Libraries/LibWeb/CSS/Selector.cpp
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@ -1,6 +1,6 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2021-2024, Sam Atkins <sam@ladybird.org>
* Copyright (c) 2021-2025, Sam Atkins <sam@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -285,6 +285,31 @@ u32 Selector::specificity() const
return *m_specificity;
}
String Selector::PseudoElementSelector::serialize() const
{
StringBuilder builder;
builder.append("::"sv);
if (!m_name.is_empty()) {
builder.append(m_name);
} else {
builder.append(pseudo_element_name(m_type));
}
m_value.visit(
[&builder](PTNameSelector const& pt_name_selector) {
builder.append('(');
if (pt_name_selector.is_universal)
builder.append('*');
else
builder.append(pt_name_selector.value);
builder.append(')');
},
[](Empty const&) {});
return builder.to_string_without_validation();
}
// https://www.w3.org/TR/cssom/#serialize-a-simple-selector
String Selector::SimpleSelector::serialize() const
{
@ -519,8 +544,7 @@ String Selector::serialize() const
// 4. If this is the last part of the chain of the selector and there is a pseudo-element,
// append "::" followed by the name of the pseudo-element, to s.
if (compound_selector.simple_selectors.last().type == Selector::SimpleSelector::Type::PseudoElement) {
s.append("::"sv);
s.append(compound_selector.simple_selectors.last().pseudo_element().name());
s.append(compound_selector.simple_selectors.last().pseudo_element().serialize());
}
}
}