From efac8625703e9b059af0f32422d0d274f99ae475 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Fri, 25 Feb 2022 22:05:42 +0100
Subject: [PATCH] LibWeb: Parse <style> element text content when inserted into
 document

1% progression on ACID3. :^)
---
 Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp | 8 +++++++-
 Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h   | 1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp
index 9728a91c75752d..e9472b67455030 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp
@@ -27,6 +27,12 @@ void HTMLStyleElement::children_changed()
     HTMLElement::children_changed();
 }
 
+void HTMLStyleElement::inserted()
+{
+    update_a_style_block();
+    return HTMLElement::inserted();
+}
+
 void HTMLStyleElement::removed_from(Node* old_parent)
 {
     update_a_style_block();
@@ -93,7 +99,7 @@ static void create_a_css_style_sheet(DOM::Document& document, String type, DOM::
 // NOTE: This is basically done by children_changed() today:
 // The element's children changed steps run.
 //
-// NOTE: This is basically done by removed_from() today:
+// NOTE: This is basically done by inserted() and removed_from() today:
 // The element is not on the stack of open elements of an HTML parser or XML parser, and it becomes connected or disconnected.
 //
 // https://html.spec.whatwg.org/multipage/semantics.html#update-a-style-block
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h
index c1a79ba45d3666..56261eaf0150a7 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h
+++ b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.h
@@ -19,6 +19,7 @@ class HTMLStyleElement final : public HTMLElement {
     virtual ~HTMLStyleElement() override;
 
     virtual void children_changed() override;
+    virtual void inserted() override;
     virtual void removed_from(Node*) override;
 
     void update_a_style_block();