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https://github.com/LadybirdBrowser/ladybird.git
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c0d7f748ed
This commit introduces a WEB_SET_PROTOTYPE_FOR_INTERFACE macro that caches the interface name in a local static FlyString. This means that we only pay for FlyString-from-literal lookup once per browser lifetime instead of every time the interface is instantiated.
86 lines
3.2 KiB
C++
86 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_DEFINE_ALLOCATOR(HTMLFormControlsCollection);
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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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WEB_SET_PROTOTYPE_FOR_INTERFACE(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) const
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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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// 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->id() != name && element->name() != 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, [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.id() == name || element.name() == name;
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}));
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}
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WebIDL::ExceptionOr<JS::Value> HTMLFormControlsCollection::named_item_value(FlyString const& name) const
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{
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return named_item_or_radio_node_list(name).visit(
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[](Empty) -> JS::Value { return JS::js_undefined(); },
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[](auto const& value) -> JS::Value { return value; });
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}
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}
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