From cc2e08d9e9eac7cb97e321e65d82b55eb141c2de Mon Sep 17 00:00:00 2001
From: Idan Horowitz <idan.horowitz@gmail.com>
Date: Sat, 12 Mar 2022 23:50:53 +0200
Subject: LibWeb: Implement HTMLTableSectionElement::deleteRow()

---
 .../LibWeb/HTML/HTMLTableSectionElement.cpp        | 22 ++++++++++++++++++++++
 .../LibWeb/HTML/HTMLTableSectionElement.h          |  1 +
 .../LibWeb/HTML/HTMLTableSectionElement.idl        |  1 +
 3 files changed, 24 insertions(+)

(limited to 'Userland/Libraries')

diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.cpp
index 187a40e521..7e0fa12378 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.cpp
@@ -59,4 +59,26 @@ DOM::ExceptionOr<NonnullRefPtr<HTMLTableRowElement>> HTMLTableSectionElement::in
     return table_row;
 }
 
+// https://html.spec.whatwg.org/multipage/tables.html#dom-tbody-deleterow
+DOM::ExceptionOr<void> HTMLTableSectionElement::delete_row(long index)
+{
+    auto rows_collection = rows();
+    auto rows_collection_size = static_cast<long>(rows_collection->length());
+
+    // 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.
+    if (index < -1 || index >= rows_collection_size)
+        return DOM::IndexSizeError::create("Index is negative or greater than or equal to the number of rows");
+
+    // 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.
+    if (index == -1) {
+        if (rows_collection_size > 0)
+            rows_collection->item(rows_collection_size - 1)->remove();
+    }
+    // 3. Otherwise, remove the indexth element in the rows collection from this element.
+    else {
+        rows_collection->item(index)->remove();
+    }
+    return {};
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.h b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.h
index d6db3c28e0..98642fdde3 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.h
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.h
@@ -20,6 +20,7 @@ public:
 
     NonnullRefPtr<DOM::HTMLCollection> rows() const;
     DOM::ExceptionOr<NonnullRefPtr<HTMLTableRowElement>> insert_row(long index);
+    DOM::ExceptionOr<void> delete_row(long index);
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.idl
index 2f74fa52b4..ee1025d819 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.idl
@@ -11,5 +11,6 @@ interface HTMLTableSectionElement : HTMLElement {
 
     [SameObject] readonly attribute HTMLCollection rows;
     HTMLTableRowElement insertRow(optional long index = -1);
+    undefined deleteRow(long index);
 
 };
-- 
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