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LibWeb: Add support for trees of pseudo-elements

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This is needed for CSS view transitions.
This commit is contained in:
Psychpsyo 2025-03-25 18:13:18 +01:00 • committed by Sam Atkins
commit 31301ef08b
Notes: github-actions[bot] 2025-05-13 11:39:50 +00:00
5 changed files with 88 additions and 25 deletions
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28
Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPseudoElement.cpp
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@ -86,6 +86,7 @@ Optional<PseudoElement> aliased_pseudo_element_from_string(StringView);
StringView pseudo_element_name(PseudoElement);
bool is_has_allowed_pseudo_element(PseudoElement);
bool is_pseudo_element_root(PseudoElement);
bool pseudo_element_supports_property(PseudoElement, PropertyID);
struct PseudoElementMetadata {
@ -234,6 +235,33 @@ bool is_has_allowed_pseudo_element(PseudoElement pseudo_element)
}
}
bool is_pseudo_element_root(PseudoElement pseudo_element)
{
switch (pseudo_element) {
)~~~");
pseudo_elements_data.for_each_member([&](auto& name, JsonValue const& value) {
auto& pseudo_element = value.as_object();
if (pseudo_element.has("alias-for"sv))
return;
if (!pseudo_element.get_bool("is-pseudo-root"sv).value_or(false))
return;
auto member_generator = generator.fork();
member_generator.set("name:titlecase", title_casify(name));
member_generator.append(R"~~~(
case PseudoElement::@name:titlecase@:
return true;
)~~~");
});
generator.append(R"~~~(
default:
return false;
}
}
bool pseudo_element_supports_property(PseudoElement pseudo_element, PropertyID property_id)
{
switch (pseudo_element) {