ladybird/Libraries/LibWeb/DOM/DOMTokenList.h
Tim Ledbetter d946d94e2d LibWeb: Improve relList feature detection support
`DOMTokenList.supports()` is now correct for all possible `rel`
attribute values for `link`, `a`, `area` and `form` elements.
2024-12-06 18:09:53 +00:00

83 lines
2.6 KiB
C++

/*
* Copyright (c) 2021, Tim Flynn <trflynn89@serenityos.org>
* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/FlyString.h>
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <AK/Vector.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/Forward.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::DOM {
// https://dom.spec.whatwg.org/#domtokenlist
class DOMTokenList final : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(DOMTokenList, Bindings::PlatformObject);
GC_DECLARE_ALLOCATOR(DOMTokenList);
public:
[[nodiscard]] static GC::Ref<DOMTokenList> create(Element& associated_element, FlyString associated_attribute);
~DOMTokenList() = default;
void associated_attribute_changed(StringView value);
virtual Optional<JS::Value> item_value(size_t index) const override;
size_t length() const { return m_token_set.size(); }
Optional<String> item(size_t index) const;
bool contains(String const& token);
WebIDL::ExceptionOr<void> add(Vector<String> const& tokens);
WebIDL::ExceptionOr<void> remove(Vector<String> const& tokens);
WebIDL::ExceptionOr<bool> toggle(String const& token, Optional<bool> force);
WebIDL::ExceptionOr<bool> replace(String const& token, String const& new_token);
WebIDL::ExceptionOr<bool> supports(StringView token);
String value() const;
void set_value(String const& value);
private:
DOMTokenList(Element& associated_element, FlyString associated_attribute);
virtual void initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
WebIDL::ExceptionOr<void> validate_token(StringView token) const;
WebIDL::ExceptionOr<void> validate_token_not_empty(StringView token) const;
WebIDL::ExceptionOr<void> validate_token_not_whitespace(StringView token) const;
void run_update_steps();
String serialize_ordered_set() const;
GC::Ref<Element> m_associated_element;
FlyString m_associated_attribute;
Vector<String> m_token_set;
};
}
struct SupportedTokenKey {
FlyString element_name;
FlyString attribute_name;
constexpr bool operator==(SupportedTokenKey const& other) const = default;
};
namespace AK {
template<>
struct Traits<SupportedTokenKey> : public DefaultTraits<SupportedTokenKey> {
static unsigned hash(SupportedTokenKey const& key)
{
return pair_int_hash(key.element_name.hash(), key.attribute_name.hash());
}
};
}