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@@ -1,5 +1,6 @@
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/*
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* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
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+ * Copyright (c) 2024, Jamie Mansfield <jmansfield@cadixdev.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@@ -13,6 +14,7 @@
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#include <LibWeb/CSS/StyleValues/ImageStyleValue.h>
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#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
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#include <LibWeb/DOM/Document.h>
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+#include <LibWeb/DOM/HTMLCollection.h>
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#include <LibWeb/HTML/HTMLTableCellElement.h>
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#include <LibWeb/HTML/HTMLTableElement.h>
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#include <LibWeb/HTML/Numbers.h>
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@@ -150,6 +152,24 @@ WebIDL::ExceptionOr<void> HTMLTableCellElement::set_row_span(unsigned int value)
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return set_attribute(HTML::AttributeNames::rowspan, MUST(String::number(value)));
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}
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+// https://html.spec.whatwg.org/multipage/tables.html#dom-tdth-cellindex
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+WebIDL::Long HTMLTableCellElement::cell_index() const
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+{
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+ // The cellIndex IDL attribute must, if the element has a parent tr element, return the index of the cell's
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+ // element in the parent element's cells collection. If there is no such parent element, then the attribute
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+ // must return −1.
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+ auto const* parent = first_ancestor_of_type<HTMLTableRowElement>();
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+ if (!parent)
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+ return -1;
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+
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+ auto rows = parent->cells()->collect_matching_elements();
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+ for (size_t i = 0; i < rows.size(); ++i) {
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+ if (rows[i] == this)
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+ return i;
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+ }
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+ return -1;
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+}
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+
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Optional<ARIA::Role> HTMLTableCellElement::default_role() const
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{
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// TODO: For td:
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Jamie Mansfield