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LibWeb: Implement TrustedTypes spec for the concept of set_attribute_ns

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Tete17 2025-08-08 02:05:30 +02:00 • committed by Luke Wilde
parent 4b00a61479
commit e2adce84e7
Notes: github-actions[bot] 2025-10-27 16:16:30 +00:00
4 changed files with 20 additions and 9 deletions
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19
Libraries/LibWeb/DOM/Element.cpp
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@ -362,14 +362,25 @@ WebIDL::ExceptionOr<QualifiedName> validate_and_extract(JS::Realm& realm, Option
return QualifiedName { local_name, prefix, namespace_ };
}
// https://dom.spec.whatwg.org/#dom-element-setattributens
WebIDL::ExceptionOr<void> Element::set_attribute_ns(Optional<FlyString> const& namespace_, FlyString const& qualified_name, String const& value)
// FIXME: Trusted Types integration with DOM is still under review https://github.com/whatwg/dom/pull/1268
// https://whatpr.org/dom/1268.html#dom-element-setattributens
WebIDL::ExceptionOr<void> Element::set_attribute_ns(Optional<FlyString> const& namespace_, FlyString const& qualified_name, Variant<GC::Root<TrustedTypes::TrustedHTML>, GC::Root<TrustedTypes::TrustedScript>, GC::Root<TrustedTypes::TrustedScriptURL>, Utf16String> const& value)
{
// 1. Let (namespace, prefix, localName) be the result of validating and extracting namespace and qualifiedName given "element".
auto extracted_qualified_name = TRY(validate_and_extract(realm(), namespace_, qualified_name, ValidationContext::Element));
// 2. Set an attribute value for this using localName, value, and also prefix and namespace.
set_attribute_value(extracted_qualified_name.local_name(), value, extracted_qualified_name.prefix(), extracted_qualified_name.namespace_());
// 2. Let verifiedValue be the result of calling get Trusted Types-compliant attribute value
// with localName, namespace, element, and value.
auto const verified_value = TRY(TrustedTypes::get_trusted_types_compliant_attribute_value(
extracted_qualified_name.local_name(),
extracted_qualified_name.namespace_().has_value() ? Utf16String::from_utf8(extracted_qualified_name.namespace_().value()) : Optional<Utf16String>(),
*this,
value.visit(
[](auto const& trusted_type) -> Variant<GC::Root<TrustedTypes::TrustedHTML>, GC::Root<TrustedTypes::TrustedScript>, GC::Root<TrustedTypes::TrustedScriptURL>, Utf16String> { return trusted_type; },
[](String const& string) -> Variant<GC::Root<TrustedTypes::TrustedHTML>, GC::Root<TrustedTypes::TrustedScript>, GC::Root<TrustedTypes::TrustedScriptURL>, Utf16String> { return Utf16String::from_utf8(string); })));
// 3. Set an attribute value for this using localName, verifiedValue, and also prefix and namespace.
set_attribute_value(extracted_qualified_name.local_name(), verified_value.to_utf8_but_should_be_ported_to_utf16(), extracted_qualified_name.prefix(), extracted_qualified_name.namespace_());
return {};
}