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LibWeb: Enabling @import in new CSS parser

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Sam Atkins 2021-07-06 16:05:12 +01:00 committed by Andreas Kling
parent 6b6bf4a0aa
commit 65fe3895e6
Notes: sideshowbarker 2024-07-18 09:13:41 +09:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/SerenityOS/serenity/commit/65fe3895e6e
Pull-request: https://github.com/SerenityOS/serenity/pull/8341
1 changed files with 24 additions and 6 deletions
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30
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -1020,21 +1020,39 @@ Vector<Vector<StyleComponentValueRule>> Parser::parse_as_comma_separated_list_of
RefPtr<CSSRule> Parser::convert_to_rule(NonnullRefPtr<StyleRule> rule)
{
dbgln("Converting a rule: {}", rule->to_string());
if (rule->m_type == StyleRule::Type::At) {
dbgln("... It's an at rule");
} else {
dbgln("... It's a style rule");
if (rule->m_name.equals_ignoring_case("import"sv) && !rule->prelude().is_empty()) {
Optional<String> url;
auto url_token = rule->prelude().first();
if (url_token.is_function()) {
auto& function = url_token.function();
if (function.name().equals_ignoring_case("url"sv) && !function.values().is_empty())
url = url_token.function().values().first();
}
if (url_token.is(Token::Type::String))
url = url_token.token().string();
// FIXME: Handle list of media queries. https://www.w3.org/TR/css-cascade-3/#conditional-import
if (url.has_value())
return CSSImportRule::create(m_context.complete_url(url.value()));
} else {
dbgln("Unrecognized CSS at-rule: {}", rule->m_name);
}
// FIXME: More at rules!
} else {
auto prelude_stream = TokenStream(rule->m_prelude);
Vector<Selector> selectors = parse_a_selector(prelude_stream);
auto declaration = convert_to_declaration(*rule->m_block);
if (declaration && !selectors.is_empty())
return CSSStyleRule::create(move(selectors), move(*declaration));
else
dbgln("Discarding invalid/unsupported style rule: '{}'", rule->to_string());
}
dbgln("... discarding because it's invalid or unsupported.");
return {};
}