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LibWeb/CSS: Implement the color-scheme CSS property

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Gingeh 2025-01-02 12:59:09 +11:00 • committed by Sam Atkins
parent 89296b88a0
commit ce5cd012b9
Notes: github-actions[bot] 2025-01-08 11:19:41 +00:00
36 changed files with 618 additions and 370 deletions
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70
Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -42,6 +42,7 @@
#include <LibWeb/CSS/StyleValues/CSSLCHLike.h>
#include <LibWeb/CSS/StyleValues/CSSLabLike.h>
#include <LibWeb/CSS/StyleValues/CSSRGB.h>
#include <LibWeb/CSS/StyleValues/ColorSchemeStyleValue.h>
#include <LibWeb/CSS/StyleValues/ContentStyleValue.h>
#include <LibWeb/CSS/StyleValues/CounterDefinitionsStyleValue.h>
#include <LibWeb/CSS/StyleValues/CounterStyleValue.h>
@ -3612,6 +3613,71 @@ RefPtr<CSSStyleValue> Parser::parse_color_value(TokenStream<ComponentValue>& tok
return {};
}
RefPtr<CSSStyleValue> Parser::parse_color_scheme_value(TokenStream<ComponentValue>& tokens)
{
// normal | [ light | dark | <custom-ident> ]+ && only?
// normal
{
auto transaction = tokens.begin_transaction();
tokens.discard_whitespace();
if (tokens.consume_a_token().is_ident("normal"sv)) {
if (tokens.has_next_token())
return {};
transaction.commit();
return ColorSchemeStyleValue::normal();
}
}
bool only = false;
Vector<String> schemes;
// only? && (..)
{
auto transaction = tokens.begin_transaction();
tokens.discard_whitespace();
if (tokens.consume_a_token().is_ident("only"sv)) {
only = true;
transaction.commit();
}
}
// [ light | dark | <custom-ident> ]+
tokens.discard_whitespace();
while (tokens.has_next_token()) {
auto transaction = tokens.begin_transaction();
// The 'normal', 'light', 'dark', and 'only' keywords are not valid <custom-ident>s in this property.
// Note: only 'normal' is blacklisted here because 'light' and 'dark' aren't parsed differently and 'only' is checked for afterwards
auto ident = parse_custom_ident_value(tokens, { "normal"sv });
if (!ident)
return {};
if (ident->custom_ident() == "only"_fly_string)
break;
schemes.append(ident->custom_ident().to_string());
tokens.discard_whitespace();
transaction.commit();
}
// (..) && only?
if (!only) {
auto transaction = tokens.begin_transaction();
tokens.discard_whitespace();
if (tokens.consume_a_token().is_ident("only"sv)) {
only = true;
transaction.commit();
}
}
tokens.discard_whitespace();
if (tokens.has_next_token() || schemes.is_empty())
return {};
return ColorSchemeStyleValue::create(schemes, only);
}
// https://drafts.csswg.org/css-lists-3/#counter-functions
RefPtr<CSSStyleValue> Parser::parse_counter_value(TokenStream<ComponentValue>& tokens)
{
@ -8460,6 +8526,10 @@ Parser::ParseErrorOr<NonnullRefPtr<CSSStyleValue>> Parser::parse_css_value(Prope
if (auto parsed_value = parse_shadow_value(tokens, AllowInsetKeyword::Yes); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::ColorScheme:
if (auto parsed_value = parse_color_scheme_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::Columns:
if (auto parsed_value = parse_columns_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();