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LibWeb: Implement DOMTokenList for managing space-separated tokens lists

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DOMTokenList is used as the return type of, e.g., the Element.classList
property.
This commit is contained in:
Timothy Flynn 2021-10-18 11:53:40 -04:00 • committed by Andreas Kling
parent 4d8320a49a
commit d24ae8063b
6 changed files with 339 additions and 0 deletions
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63
Userland/Libraries/LibWeb/DOM/DOMTokenList.h Normal file
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/*
* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/FlyString.h>
#include <AK/Optional.h>
#include <AK/RefCounted.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <AK/Vector.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/DOM/ExceptionOr.h>
#include <LibWeb/Forward.h>
namespace Web::DOM {
// https://dom.spec.whatwg.org/#domtokenlist
class DOMTokenList final
: public RefCounted<DOMTokenList>
, public Bindings::Wrappable {
public:
using WrapperType = Bindings::DOMTokenListWrapper;
static NonnullRefPtr<DOMTokenList> create(Element const& associated_element, FlyString associated_attribute);
~DOMTokenList() = default;
void associated_attribute_changed(StringView value);
bool is_supported_property_index(u32 index) const;
size_t length() const { return m_token_set.size(); }
String const& item(size_t index) const;
bool contains(StringView token);
ExceptionOr<void> add(Vector<String> const& tokens);
ExceptionOr<void> remove(Vector<String> const& tokens);
ExceptionOr<bool> toggle(String const& token, Optional<bool> force);
ExceptionOr<bool> replace(String const& token, String const& new_token);
ExceptionOr<bool> supports(StringView token);
String value() const;
void set_value(String value);
private:
DOMTokenList(Element const& associated_element, FlyString associated_attribute);
ExceptionOr<void> validate_token(StringView token) const;
void run_update_steps();
WeakPtr<Element> m_associated_element;
FlyString m_associated_attribute;
Vector<String> m_token_set;
};
}
namespace Web::Bindings {
DOMTokenListWrapper* wrap(JS::GlobalObject&, DOM::DOMTokenList&);
}