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df1bb0ff49
Some of the live HTMLCollection only ever contain children of their root node. When we know that's the case, we can avoid doing a full subtree traversal of all descendants and only visit children. This cuts the ECMA262 spec loading time by over 10 seconds. :^)
77 lines
3.4 KiB
C++
77 lines
3.4 KiB
C++
/*
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* Copyright (c) 2022, the SerenityOS developers.
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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/HTML/HTMLOptGroupElement.h>
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#include <LibWeb/HTML/HTMLOptionElement.h>
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#include <LibWeb/HTML/HTMLOptionsCollection.h>
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#include <LibWeb/HTML/HTMLSelectElement.h>
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#include <LibWeb/WebIDL/DOMException.h>
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namespace Web::HTML {
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WebIDL::ExceptionOr<JS::NonnullGCPtr<HTMLOptionsCollection>> HTMLOptionsCollection::create(DOM::ParentNode& root, Function<bool(DOM::Element const&)> filter)
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{
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return MUST_OR_THROW_OOM(root.heap().allocate<HTMLOptionsCollection>(root.realm(), root, move(filter)));
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}
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HTMLOptionsCollection::HTMLOptionsCollection(DOM::ParentNode& root, Function<bool(DOM::Element const&)> filter)
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: DOM::HTMLCollection(root, Scope::Descendants, move(filter))
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{
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}
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HTMLOptionsCollection::~HTMLOptionsCollection() = default;
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JS::ThrowCompletionOr<void> HTMLOptionsCollection::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLOptionsCollectionPrototype>(realm, "HTMLOptionsCollection"));
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return {};
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}
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// https://html.spec.whatwg.org/multipage/common-dom-interfaces.html#dom-htmloptionscollection-add
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WebIDL::ExceptionOr<void> HTMLOptionsCollection::add(HTMLOptionOrOptGroupElement element, Optional<HTMLElementOrElementIndex> before)
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{
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auto resolved_element = element.visit(
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[](auto& e) -> JS::Handle<HTMLElement> {
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return JS::make_handle(static_cast<HTML::HTMLElement&>(*e));
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});
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JS::GCPtr<DOM::Node> before_element;
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if (before.has_value() && before->has<JS::Handle<HTMLElement>>())
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before_element = before->get<JS::Handle<HTMLElement>>().ptr();
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// 1. If element is an ancestor of the select element on which the HTMLOptionsCollection is rooted, then throw a "HierarchyRequestError" DOMException.
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if (resolved_element->is_ancestor_of(root()))
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return WebIDL::HierarchyRequestError::create(realm(), "The provided element is an ancestor of the root select element.");
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// 2. If before is an element, but that element isn't a descendant of the select element on which the HTMLOptionsCollection is rooted, then throw a "NotFoundError" DOMException.
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if (before_element && !before_element->is_descendant_of(root()))
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return WebIDL::NotFoundError::create(realm(), "The 'before' element is not a descendant of the root select element.");
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// 3. If element and before are the same element, then return.
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if (before_element && (resolved_element.ptr() == before_element.ptr()))
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return {};
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// 4. If before is a node, then let reference be that node. Otherwise, if before is an integer, and there is a beforeth node in the collection, let reference be that node. Otherwise, let reference be null.
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JS::GCPtr<DOM::Node> reference;
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if (before_element)
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reference = move(before_element);
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else if (before.has_value() && before->has<i32>())
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reference = item(before->get<i32>());
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// 5. If reference is not null, let parent be the parent node of reference. Otherwise, let parent be the select element on which the HTMLOptionsCollection is rooted.
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DOM::Node* parent = reference ? reference->parent() : root().ptr();
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// 6. Pre-insert element into parent node before reference.
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(void)TRY(parent->pre_insert(*resolved_element, reference));
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return {};
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}
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}
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