From 10d4f2fc1eadf7beaf5caee66312d38e9a29599c Mon Sep 17 00:00:00 2001
From: Luke Wilde <lukew@serenityos.org>
Date: Fri, 1 Oct 2021 00:13:56 +0100
Subject: [PATCH] LibWeb: Implement HTMLStyleElement.sheet

---
 Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp | 7 +++++++
 Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h   | 2 ++
 Userland/Libraries/LibWeb/HTML/HTMLStyleElement.idl | 3 +++
 3 files changed, 12 insertions(+)

diff --git a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp
index 4ff31bd113..ed853c2a07 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp
@@ -144,4 +144,11 @@ void HTMLStyleElement::update_a_style_block()
         sheet.release_nonnull());
 }
 
+// https://drafts.csswg.org/cssom/#dom-linkstyle-sheet
+RefPtr<CSS::CSSStyleSheet> HTMLStyleElement::sheet() const
+{
+    // The sheet attribute must return the associated CSS style sheet for the node or null if there is no associated CSS style sheet.
+    return m_associated_css_style_sheet;
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h
index 9643e33ad3..a96393093d 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h
+++ b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h
@@ -23,6 +23,8 @@ public:
 
     void update_a_style_block();
 
+    RefPtr<CSS::CSSStyleSheet> sheet() const;
+
 private:
     // https://drafts.csswg.org/cssom/#associated-css-style-sheet
     RefPtr<CSS::CSSStyleSheet> m_associated_css_style_sheet;
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.idl
index a5ab2934f3..bab3c4d8ab 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.idl
@@ -4,4 +4,7 @@ interface HTMLStyleElement : HTMLElement {
 
     [Reflect] attribute DOMString type;
 
+    // FIXME: This should come from a LinkStyle mixin
+    readonly attribute CSSStyleSheet? sheet;
+
 };