LibWeb: Add HTMLTableSectionElement.rows and HTMLTableRowElement.cells

1% progression on ACID3. :^)

1 files changed, 16 insertions, 1 deletions

diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.cpp
index 78af359fd0..fe3716d20c 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.cpp
@@ -1,9 +1,11 @@
 /*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibWeb/DOM/HTMLCollection.h>
+#include <LibWeb/HTML/HTMLTableCellElement.h>
 #include <LibWeb/HTML/HTMLTableRowElement.h>
 
 namespace Web::HTML {
@@ -17,4 +19,17 @@ HTMLTableRowElement::~HTMLTableRowElement()
 {
 }
 
+// https://html.spec.whatwg.org/multipage/tables.html#dom-tr-cells
+NonnullRefPtr<DOM::HTMLCollection> HTMLTableRowElement::cells() const
+{
+    // The cells attribute must return an HTMLCollection rooted at this tr element,
+    // whose filter matches only td and th elements that are children of the tr element.
+    // FIXME: This should return the same HTMLCollection object every time,
+    //        but that would cause a reference cycle since HTMLCollection refs the root.
+    return DOM::HTMLCollection::create(const_cast<HTMLTableRowElement&>(*this), [this](Element const& element) {
+        return element.parent() == this
+            && is<HTMLTableCellElement>(element);
+    });
+}
+
 }