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LibWeb: Implement CSSStyleSheet.replaceSync()

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This method behaves the same as `CSSStyleSheet.replace()` but the
operation is performed synchronously.
This commit is contained in:
Tim Ledbetter 2024-02-24 07:46:59 +00:00 • committed by Andreas Kling
parent 81c67d34eb
commit 87b52a1816
5 changed files with 94 additions and 1 deletions
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27
Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp
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@ -230,6 +230,33 @@ JS::NonnullGCPtr<JS::Promise> CSSStyleSheet::replace(String text)
return promise;
}
// https://drafts.csswg.org/cssom/#dom-cssstylesheet-replacesync
WebIDL::ExceptionOr<void> CSSStyleSheet::replace_sync(StringView text)
{
// 1. If the constructed flag is not set, or the disallow modification flag is set, throw a NotAllowedError DOMException.
if (!constructed())
return WebIDL::NotAllowedError::create(realm(), "Can't call replaceSync() on non-constructed stylesheets"_fly_string);
if (disallow_modification())
return WebIDL::NotAllowedError::create(realm(), "Can't call replaceSync() on non-modifiable stylesheets"_fly_string);
// 2. Let rules be the result of running parse a stylesheet’s contents from text.
auto context = m_style_sheet_list ? CSS::Parser::ParsingContext { m_style_sheet_list->document() } : CSS::Parser::ParsingContext { realm() };
auto* parsed_stylesheet = parse_css_stylesheet(context, text);
auto& rules = parsed_stylesheet->rules();
// 3. If rules contains one or more @import rules, remove those rules from rules.
JS::MarkedVector<JS::NonnullGCPtr<CSSRule>> rules_without_import(realm().heap());
for (auto rule : rules) {
if (rule->type() != CSSRule::Type::Import)
rules_without_import.append(rule);
}
// 4.Set sheet’s CSS rules to rules.
m_rules->set_rules({}, rules_without_import);
return {};
}
// https://www.w3.org/TR/cssom/#dom-cssstylesheet-removerule
WebIDL::ExceptionOr<void> CSSStyleSheet::remove_rule(unsigned index)
{