From 9f01eebff361aba0014be9ccb7dc55f99f6e7a54 Mon Sep 17 00:00:00 2001
From: sideshowbarker <mike@w3.org>
Date: Thu, 19 Dec 2024 16:56:58 +0900
Subject: [PATCH] LibWeb: Add a to_element function to ARIAMixin

This change adds a virtual to_element function to ARIAMixin, and
overrides it in DOM::Element so it can then be used back inside
ARIAMixin to get an element when needed (for example, when computing a
role requires checking the roles of ancestors of an element).
---
 Libraries/LibWeb/ARIA/ARIAMixin.cpp | 1 +
 Libraries/LibWeb/ARIA/ARIAMixin.h   | 2 ++
 Libraries/LibWeb/DOM/Element.h      | 2 ++
 3 files changed, 5 insertions(+)

diff --git a/Libraries/LibWeb/ARIA/ARIAMixin.cpp b/Libraries/LibWeb/ARIA/ARIAMixin.cpp
index 73c64b2897e..2dd47c2dcb5 100644
--- a/Libraries/LibWeb/ARIA/ARIAMixin.cpp
+++ b/Libraries/LibWeb/ARIA/ARIAMixin.cpp
@@ -6,6 +6,7 @@
 
 #include <LibWeb/ARIA/ARIAMixin.h>
 #include <LibWeb/ARIA/Roles.h>
+#include <LibWeb/DOM/Element.h>
 #include <LibWeb/Infra/CharacterTypes.h>
 
 namespace Web::ARIA {
diff --git a/Libraries/LibWeb/ARIA/ARIAMixin.h b/Libraries/LibWeb/ARIA/ARIAMixin.h
index d570c784099..b8b2b7452e0 100644
--- a/Libraries/LibWeb/ARIA/ARIAMixin.h
+++ b/Libraries/LibWeb/ARIA/ARIAMixin.h
@@ -28,6 +28,8 @@ public:
     // https://www.w3.org/TR/html-aria/#docconformance
     virtual Optional<Role> default_role() const { return {}; }
 
+    virtual DOM::Element const* to_element() const { return {}; }
+
     Optional<Role> role_from_role_attribute_value() const;
     Optional<Role> role_or_default() const;
 
diff --git a/Libraries/LibWeb/DOM/Element.h b/Libraries/LibWeb/DOM/Element.h
index 7a469063a1a..278971ad4ed 100644
--- a/Libraries/LibWeb/DOM/Element.h
+++ b/Libraries/LibWeb/DOM/Element.h
@@ -315,6 +315,8 @@ public:
 
     virtual bool include_in_accessibility_tree() const override;
 
+    virtual Element const* to_element() const override { return this; }
+
     bool is_hidden() const;
     bool has_hidden_ancestor() const;