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LibWeb: Store whether sheet being parsed is a UA stylesheet

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UA stylesheets allow some things that regular stylesheets don't, for
instance allowing use of "non-overridable" `@counter-style` names.
This commit is contained in:
Callum Law 2026-02-07 21:40:54 +13:00 committed by Sam Atkins
parent 73b07d25ac
commit 3e9cdb2cf4
3 changed files with 19 additions and 4 deletions
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7
Libraries/LibWeb/CSS/Parser/Parser.cpp
View file

@ -50,6 +50,12 @@ ParsingParams::ParsingParams(JS::Realm& realm, ParsingMode mode)
{
}
ParsingParams::ParsingParams(JS::Realm& realm, IsUAStyleSheet is_ua_style_sheet)
: realm(realm)
, is_ua_style_sheet(is_ua_style_sheet)
{
}
ParsingParams::ParsingParams(DOM::Document const& document, ParsingMode mode)
: realm(const_cast<JS::Realm&>(document.realm()))
, document(&document)
@ -67,6 +73,7 @@ Parser::Parser(ParsingParams const& context, Vector<Token> tokens)
: m_document(context.document)
, m_realm(context.realm)
, m_parsing_mode(context.mode)
, m_is_ua_style_sheet(context.is_ua_style_sheet)
, m_tokens(move(tokens))
, m_token_stream(m_tokens)
, m_value_context(move(context.value_context))

8
Libraries/LibWeb/CSS/Parser/Parser.h
View file

@ -92,14 +92,21 @@ enum class ParsingMode {
SVGPresentationAttribute, // See https://svgwg.org/svg2-draft/types.html#presentation-attribute-css-value
};
enum class IsUAStyleSheet {
Yes,
No,
};
struct ParsingParams {
explicit ParsingParams(ParsingMode = ParsingMode::Normal);
explicit ParsingParams(JS::Realm&, ParsingMode = ParsingMode::Normal);
explicit ParsingParams(JS::Realm&, IsUAStyleSheet);
explicit ParsingParams(DOM::Document const&, ParsingMode = ParsingMode::Normal);
GC::Ptr<JS::Realm> realm;
GC::Ptr<DOM::Document const> document;
ParsingMode mode { ParsingMode::Normal };
IsUAStyleSheet is_ua_style_sheet { IsUAStyleSheet::No };
Vector<ValueParsingContext> value_context;
Vector<RuleContext> rule_context;
@ -599,6 +606,7 @@ private:
GC::Ptr<DOM::Document const> m_document;
GC::Ptr<JS::Realm> m_realm;
ParsingMode m_parsing_mode { ParsingMode::Normal };
IsUAStyleSheet m_is_ua_style_sheet { IsUAStyleSheet::No };
Vector<Token> m_tokens;
TokenStream<Token> m_token_stream;

8
Libraries/LibWeb/CSS/StyleScope.cpp
View file

@ -142,7 +142,7 @@ static CSSStyleSheet& default_stylesheet()
static GC::Root<CSSStyleSheet> sheet;
if (!sheet.cell()) {
extern String default_stylesheet_source;
sheet = GC::make_root(parse_css_stylesheet(CSS::Parser::ParsingParams(internal_css_realm()), default_stylesheet_source));
sheet = GC::make_root(parse_css_stylesheet(CSS::Parser::ParsingParams(internal_css_realm(), Parser::IsUAStyleSheet::Yes), default_stylesheet_source));
}
return *sheet;
}
@ -152,7 +152,7 @@ static CSSStyleSheet& quirks_mode_stylesheet()
static GC::Root<CSSStyleSheet> sheet;
if (!sheet.cell()) {
extern String quirks_mode_stylesheet_source;
sheet = GC::make_root(parse_css_stylesheet(CSS::Parser::ParsingParams(internal_css_realm()), quirks_mode_stylesheet_source));
sheet = GC::make_root(parse_css_stylesheet(CSS::Parser::ParsingParams(internal_css_realm(), Parser::IsUAStyleSheet::Yes), quirks_mode_stylesheet_source));
}
return *sheet;
}
@ -162,7 +162,7 @@ static CSSStyleSheet& mathml_stylesheet()
static GC::Root<CSSStyleSheet> sheet;
if (!sheet.cell()) {
extern String mathml_stylesheet_source;
sheet = GC::make_root(parse_css_stylesheet(CSS::Parser::ParsingParams(internal_css_realm()), mathml_stylesheet_source));
sheet = GC::make_root(parse_css_stylesheet(CSS::Parser::ParsingParams(internal_css_realm(), Parser::IsUAStyleSheet::Yes), mathml_stylesheet_source));
}
return *sheet;
}
@ -172,7 +172,7 @@ static CSSStyleSheet& svg_stylesheet()
static GC::Root<CSSStyleSheet> sheet;
if (!sheet.cell()) {
extern String svg_stylesheet_source;
sheet = GC::make_root(parse_css_stylesheet(CSS::Parser::ParsingParams(internal_css_realm()), svg_stylesheet_source));
sheet = GC::make_root(parse_css_stylesheet(CSS::Parser::ParsingParams(internal_css_realm(), Parser::IsUAStyleSheet::Yes), svg_stylesheet_source));
}
return *sheet;
}