ladybird/Libraries/LibWeb/CSS/CSSKeywordValue.cpp
Sam Atkins a93c6a347f LibWeb/CSS: Implement CSSKeywordValue
CSSStyleValue is adjusted to allow for subclasses. Serialization for
CSSKeywordValue is implemented differently than the spec says because
of a spec bug: https://github.com/w3c/csswg-drafts/issues/12545
2025-08-21 10:21:54 +01:00

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/*
* Copyright (c) 2025, Sam Atkins <sam@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "CSSKeywordValue.h"
#include <LibWeb/Bindings/CSSKeywordValuePrototype.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/CSS/Serialize.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::CSS {
GC_DEFINE_ALLOCATOR(CSSKeywordValue);
GC::Ref<CSSKeywordValue> CSSKeywordValue::create(JS::Realm& realm, FlyString value)
{
return realm.create<CSSKeywordValue>(realm, move(value));
}
// https://drafts.css-houdini.org/css-typed-om-1/#dom-csskeywordvalue-csskeywordvalue
WebIDL::ExceptionOr<GC::Ref<CSSKeywordValue>> CSSKeywordValue::construct_impl(JS::Realm& realm, FlyString value)
{
// 1. If value is an empty string, throw a TypeError.
if (value.is_empty())
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Cannot create a CSSKeywordValue with an empty string as the value"sv };
// 2. Otherwise, return a new CSSKeywordValue with its value internal slot set to value.
return CSSKeywordValue::create(realm, move(value));
}
CSSKeywordValue::CSSKeywordValue(JS::Realm& realm, FlyString value)
: CSSStyleValue(realm)
, m_value(move(value))
{
}
void CSSKeywordValue::initialize(JS::Realm& realm)
{
WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSKeywordValue);
Base::initialize(realm);
}
// https://drafts.css-houdini.org/css-typed-om-1/#dom-csskeywordvalue-value
WebIDL::ExceptionOr<void> CSSKeywordValue::set_value(FlyString value)
{
// 1. If value is an empty string, throw a TypeError.
if (value.is_empty())
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Cannot set CSSKeywordValue.value to an empty string"sv };
// 2. Otherwise, set thiss value internal slot, to value.
m_value = move(value);
return {};
}
// https://drafts.css-houdini.org/css-typed-om-1/#keywordvalue-serialization
String CSSKeywordValue::to_string() const
{
// To serialize a CSSKeywordValue this:
// 1. Return thiss value internal slot.
// AD-HOC: Serialize it as an identifier. Spec issue: https://github.com/w3c/csswg-drafts/issues/12545
return serialize_an_identifier(m_value);
}
}