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Serenity Operating System
1/*
2 * Copyright (c) 2020, the SerenityOS developers.
3 * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
4 *
5 * SPDX-License-Identifier: BSD-2-Clause
6 */
7
8#include <LibWeb/Bindings/Intrinsics.h>
9#include <LibWeb/DOM/ElementFactory.h>
10#include <LibWeb/DOM/HTMLCollection.h>
11#include <LibWeb/HTML/HTMLTableRowElement.h>
12#include <LibWeb/HTML/HTMLTableSectionElement.h>
13#include <LibWeb/Namespace.h>
14
15namespace Web::HTML {
16
17HTMLTableSectionElement::HTMLTableSectionElement(DOM::Document& document, DOM::QualifiedName qualified_name)
18 : HTMLElement(document, move(qualified_name))
19{
20}
21
22HTMLTableSectionElement::~HTMLTableSectionElement() = default;
23
24JS::ThrowCompletionOr<void> HTMLTableSectionElement::initialize(JS::Realm& realm)
25{
26 MUST_OR_THROW_OOM(Base::initialize(realm));
27 set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTableSectionElementPrototype>(realm, "HTMLTableSectionElement"));
28
29 return {};
30}
31
32void HTMLTableSectionElement::visit_edges(Cell::Visitor& visitor)
33{
34 Base::visit_edges(visitor);
35 visitor.visit(m_rows);
36}
37
38// https://html.spec.whatwg.org/multipage/tables.html#dom-tbody-rows
39JS::NonnullGCPtr<DOM::HTMLCollection> HTMLTableSectionElement::rows() const
40{
41 // The rows attribute must return an HTMLCollection rooted at this element,
42 // whose filter matches only tr elements that are children of this element.
43 if (!m_rows) {
44 m_rows = DOM::HTMLCollection::create(const_cast<HTMLTableSectionElement&>(*this), [this](Element const& element) {
45 return element.parent() == this
46 && is<HTMLTableRowElement>(element);
47 }).release_value_but_fixme_should_propagate_errors();
48 }
49 return *m_rows;
50}
51
52// https://html.spec.whatwg.org/multipage/tables.html#dom-tbody-insertrow
53WebIDL::ExceptionOr<JS::NonnullGCPtr<HTMLTableRowElement>> HTMLTableSectionElement::insert_row(long index)
54{
55 auto rows_collection = rows();
56 auto rows_collection_size = static_cast<long>(rows_collection->length());
57
58 // 1. If index is less than −1 or greater than the number of elements in the rows collection, throw an "IndexSizeError" DOMException.
59 if (index < -1 || index > rows_collection_size)
60 return WebIDL::IndexSizeError::create(realm(), "Index is negative or greater than the number of rows");
61
62 // 2. Let table row be the result of creating an element given this element's node document, tr, and the HTML namespace.
63 auto& table_row = static_cast<HTMLTableRowElement&>(*TRY(DOM::create_element(document(), TagNames::tr, Namespace::HTML)));
64
65 // 3. If index is −1 or equal to the number of items in the rows collection, then append table row to this element.
66 if (index == -1 || index == rows_collection_size)
67 TRY(append_child(table_row));
68 // 4. Otherwise, insert table row as a child of this element, immediately before the index-th tr element in the rows collection.
69 else
70 table_row.insert_before(*this, rows_collection->item(index));
71
72 // 5. Return table row.
73 return JS::NonnullGCPtr(table_row);
74}
75
76// https://html.spec.whatwg.org/multipage/tables.html#dom-tbody-deleterow
77WebIDL::ExceptionOr<void> HTMLTableSectionElement::delete_row(long index)
78{
79 auto rows_collection = rows();
80 auto rows_collection_size = static_cast<long>(rows_collection->length());
81
82 // 1. If index is less than −1 or greater than or equal to the number of elements in the rows collection, then throw an "IndexSizeError" DOMException.
83 if (index < -1 || index >= rows_collection_size)
84 return WebIDL::IndexSizeError::create(realm(), "Index is negative or greater than or equal to the number of rows");
85
86 // 2. If index is −1, then remove the last element in the rows collection from this element, or do nothing if the rows collection is empty.
87 if (index == -1) {
88 if (rows_collection_size > 0)
89 rows_collection->item(rows_collection_size - 1)->remove();
90 }
91 // 3. Otherwise, remove the indexth element in the rows collection from this element.
92 else {
93 rows_collection->item(index)->remove();
94 }
95 return {};
96}
97
98}