From c50ce2030d88bcae11c317fa02f690fef884d64d Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Tue, 6 Jun 2023 07:07:27 +0200
Subject: [PATCH] LibWeb: Allow event handler attributes on HTMLLinkElement

We were neglecting to set up event handlers for these due to a missing
call to the base class in HTMLLinkElement::parse_attribute().
---
 .../Text/expected/link-element-onload-attribute.txt      | 1 +
 .../LibWeb/Text/input/link-element-onload-attribute.html | 9 +++++++++
 Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp       | 2 ++
 3 files changed, 12 insertions(+)
 create mode 100644 Tests/LibWeb/Text/expected/link-element-onload-attribute.txt
 create mode 100644 Tests/LibWeb/Text/input/link-element-onload-attribute.html

diff --git a/Tests/LibWeb/Text/expected/link-element-onload-attribute.txt b/Tests/LibWeb/Text/expected/link-element-onload-attribute.txt
new file mode 100644
index 0000000000..6c0a18f2b7
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/link-element-onload-attribute.txt
@@ -0,0 +1 @@
+link element onload
diff --git a/Tests/LibWeb/Text/input/link-element-onload-attribute.html b/Tests/LibWeb/Text/input/link-element-onload-attribute.html
new file mode 100644
index 0000000000..67b7b5d4cd
--- /dev/null
+++ b/Tests/LibWeb/Text/input/link-element-onload-attribute.html
@@ -0,0 +1,9 @@
+<script src="include.js"></script>
+<script>
+    let link = document.createElement("link");
+    link.setAttribute("rel", "preload");
+    link.setAttribute("href", "valid.css");
+    link.setAttribute("as", "style");
+    link.setAttribute("onload", "println('link element onload')");
+    document.head.appendChild(link);
+</script>
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp
index a19773178a..df314cb0dd 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp
@@ -79,6 +79,8 @@ bool HTMLLinkElement::has_loaded_icon() const
 
 void HTMLLinkElement::parse_attribute(DeprecatedFlyString const& name, DeprecatedString const& value)
 {
+    HTMLElement::parse_attribute(name, value);
+
     // 4.6.7 Link types - https://html.spec.whatwg.org/multipage/links.html#linkTypes
     if (name == HTML::AttributeNames::rel) {
         m_relationship = 0;