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Serenity Operating System
1/*
2 * Copyright (c) 2022, the SerenityOS developers.
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <LibWeb/Bindings/Intrinsics.h>
8#include <LibWeb/HTML/HTMLOptGroupElement.h>
9#include <LibWeb/HTML/HTMLOptionElement.h>
10#include <LibWeb/HTML/HTMLOptionsCollection.h>
11#include <LibWeb/HTML/HTMLSelectElement.h>
12#include <LibWeb/WebIDL/DOMException.h>
13
14namespace Web::HTML {
15
16WebIDL::ExceptionOr<JS::NonnullGCPtr<HTMLOptionsCollection>> HTMLOptionsCollection::create(DOM::ParentNode& root, Function<bool(DOM::Element const&)> filter)
17{
18 return MUST_OR_THROW_OOM(root.heap().allocate<HTMLOptionsCollection>(root.realm(), root, move(filter)));
19}
20
21HTMLOptionsCollection::HTMLOptionsCollection(DOM::ParentNode& root, Function<bool(DOM::Element const&)> filter)
22 : DOM::HTMLCollection(root, move(filter))
23{
24}
25
26HTMLOptionsCollection::~HTMLOptionsCollection() = default;
27
28JS::ThrowCompletionOr<void> HTMLOptionsCollection::initialize(JS::Realm& realm)
29{
30 MUST_OR_THROW_OOM(Base::initialize(realm));
31 set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLOptionsCollectionPrototype>(realm, "HTMLOptionsCollection"));
32
33 return {};
34}
35
36// https://html.spec.whatwg.org/multipage/common-dom-interfaces.html#dom-htmloptionscollection-add
37WebIDL::ExceptionOr<void> HTMLOptionsCollection::add(HTMLOptionOrOptGroupElement element, Optional<HTMLElementOrElementIndex> before)
38{
39 auto resolved_element = element.visit(
40 [](auto& e) -> JS::Handle<HTMLElement> {
41 return JS::make_handle(static_cast<HTML::HTMLElement&>(*e));
42 });
43
44 JS::GCPtr<DOM::Node> before_element;
45 if (before.has_value() && before->has<JS::Handle<HTMLElement>>())
46 before_element = before->get<JS::Handle<HTMLElement>>().ptr();
47
48 // 1. If element is an ancestor of the select element on which the HTMLOptionsCollection is rooted, then throw a "HierarchyRequestError" DOMException.
49 if (resolved_element->is_ancestor_of(root()))
50 return WebIDL::HierarchyRequestError::create(realm(), "The provided element is an ancestor of the root select element.");
51
52 // 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.
53 if (before_element && !before_element->is_descendant_of(root()))
54 return WebIDL::NotFoundError::create(realm(), "The 'before' element is not a descendant of the root select element.");
55
56 // 3. If element and before are the same element, then return.
57 if (before_element && (resolved_element.ptr() == before_element.ptr()))
58 return {};
59
60 // 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.
61 JS::GCPtr<DOM::Node> reference;
62
63 if (before_element)
64 reference = move(before_element);
65 else if (before.has_value() && before->has<i32>())
66 reference = item(before->get<i32>());
67
68 // 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.
69 DOM::Node* parent = reference ? reference->parent() : root().ptr();
70
71 // 6. Pre-insert element into parent node before reference.
72 (void)TRY(parent->pre_insert(*resolved_element, reference));
73
74 return {};
75}
76
77}