From ffcd395afc144b7790118b0e3db40a62c43cb6fd Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Thu, 2 Jan 2020 14:52:34 +0100
Subject: [PATCH] LibHTML: Have element keep a pointer to their resolved style

This will make it easy to implement a simple element style inspector.
---
 Libraries/LibHTML/DOM/Element.cpp | 2 ++
 Libraries/LibHTML/DOM/Element.h   | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/Libraries/LibHTML/DOM/Element.cpp b/Libraries/LibHTML/DOM/Element.cpp
index fefde6a4a8..2f339d7bf8 100644
--- a/Libraries/LibHTML/DOM/Element.cpp
+++ b/Libraries/LibHTML/DOM/Element.cpp
@@ -78,6 +78,7 @@ bool Element::has_class(const StringView& class_name) const
 RefPtr<LayoutNode> Element::create_layout_node(const StyleProperties* parent_style) const
 {
     auto style = document().style_resolver().resolve_style(*this, parent_style);
+    const_cast<Element&>(*this).m_resolved_style = style;
     auto display = style->string_or_fallback(CSS::PropertyID::Display, "inline");
 
     if (display == "none")
@@ -139,6 +140,7 @@ void Element::recompute_style()
         return;
     ASSERT(parent_layout_node);
     auto style = document().style_resolver().resolve_style(*this, &parent_layout_node->style());
+    m_resolved_style = style;
     if (!layout_node()) {
         if (style->string_or_fallback(CSS::PropertyID::Display, "inline") == "none")
             return;
diff --git a/Libraries/LibHTML/DOM/Element.h b/Libraries/LibHTML/DOM/Element.h
index 4444bd497a..cf53f8221a 100644
--- a/Libraries/LibHTML/DOM/Element.h
+++ b/Libraries/LibHTML/DOM/Element.h
@@ -56,6 +56,8 @@ public:
 
     String name() const { return attribute("name"); }
 
+    const StyleProperties* resolved_style() const { return m_resolved_style.ptr(); }
+
 private:
     RefPtr<LayoutNode> create_layout_node(const StyleProperties* parent_style) const override;
 
@@ -64,6 +66,8 @@ private:
 
     String m_tag_name;
     Vector<Attribute> m_attributes;
+
+    RefPtr<StyleProperties> m_resolved_style;
 };
 
 template<>