0f6782fae6
This should allow us to add a Element::attribute which returns an Optional<String>. Eventually all callers should be ported to switch from the DeprecatedString version, but in the meantime, this should allow us to port some more IDL interfaces away from DeprecatedString.
78 lines
3.2 KiB
C++
78 lines
3.2 KiB
C++
/*
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* Copyright (c) 2023, Shannon Booth <shannon@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/DOM/Element.h>
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#include <LibWeb/DOM/HTMLCollection.h>
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#include <LibWeb/DOM/HTMLFormControlsCollection.h>
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#include <LibWeb/DOM/ParentNode.h>
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namespace Web::DOM {
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JS::NonnullGCPtr<HTMLFormControlsCollection> HTMLFormControlsCollection::create(ParentNode& root, Scope scope, Function<bool(Element const&)> filter)
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{
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return root.heap().allocate<HTMLFormControlsCollection>(root.realm(), root, scope, move(filter));
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}
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HTMLFormControlsCollection::HTMLFormControlsCollection(ParentNode& root, Scope scope, Function<bool(Element const&)> filter)
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: HTMLCollection(root, scope, move(filter))
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{
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}
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HTMLFormControlsCollection::~HTMLFormControlsCollection() = default;
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void HTMLFormControlsCollection::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLFormControlsCollectionPrototype>(realm, "HTMLFormControlsCollection"));
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}
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// https://html.spec.whatwg.org/multipage/common-dom-interfaces.html#dom-htmlformcontrolscollection-nameditem
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Variant<Empty, Element*, JS::Handle<RadioNodeList>> HTMLFormControlsCollection::named_item_or_radio_node_list(FlyString const& name)
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{
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// 1. If name is the empty string, return null and stop the algorithm.
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if (name.is_empty())
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return {};
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auto const deprecated_name = name.to_deprecated_fly_string();
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// 2. If, at the time the method is called, there is exactly one node in the collection that has either an id attribute or a name attribute equal to name, then return that node and stop the algorithm.
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// 3. Otherwise, if there are no nodes in the collection that have either an id attribute or a name attribute equal to name, then return null and stop the algorithm.
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Element* matching_element = nullptr;
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bool multiple_matching = false;
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auto collection = collect_matching_elements();
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for (auto const& element : collection) {
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if (element->deprecated_attribute(HTML::AttributeNames::id) != deprecated_name && element->name() != deprecated_name)
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continue;
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if (matching_element) {
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multiple_matching = true;
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break;
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}
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matching_element = element;
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}
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if (!matching_element)
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return {};
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if (!multiple_matching)
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return matching_element;
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// 4. Otherwise, create a new RadioNodeList object representing a live view of the HTMLFormControlsCollection object, further filtered so that the only nodes in the
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// RadioNodeList object are those that have either an id attribute or a name attribute equal to name. The nodes in the RadioNodeList object must be sorted in tree
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// order. Return that RadioNodeList object.
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return JS::make_handle(RadioNodeList::create(realm(), root(), LiveNodeList::Scope::Descendants, [deprecated_name](Node const& node) {
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if (!is<Element>(node))
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return false;
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auto const& element = verify_cast<Element>(node);
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return element.deprecated_attribute(HTML::AttributeNames::id) == deprecated_name || element.name() == deprecated_name;
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}));
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}
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}
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