Browser+LibHTML: Change the way computed styles are queried

2 files changed, 26 insertions, 0 deletions

diff --git a/Libraries/LibHTML/DOM/Element.cpp b/Libraries/LibHTML/DOM/Element.cpp
index 2f339d7bf8..d0e6d92d53 100644
--- a/Libraries/LibHTML/DOM/Element.cpp
+++ b/Libraries/LibHTML/DOM/Element.cpp
@@ -1,4 +1,6 @@
 #include <LibHTML/CSS/StyleResolver.h>
+#include <LibHTML/CSS/PropertyID.h>
+#include <LibHTML/CSS/Length.h>
 #include <LibHTML/DOM/Document.h>
 #include <LibHTML/DOM/Element.h>
 #include <LibHTML/Layout/LayoutBlock.h>
@@ -160,3 +162,26 @@ void Element::recompute_style()
         layout_node()->set_needs_display();
     }
 }
+
+RefPtr<StyleProperties> Element::computed_style()
+{
+    auto properties = StyleProperties::create(*m_resolved_style);
+    if (layout_node() && layout_node()->has_style()) {
+        CSS::PropertyID box_model_metrics[] = {
+            CSS::PropertyID::MarginTop,
+            CSS::PropertyID::MarginBottom,
+            CSS::PropertyID::MarginLeft,
+            CSS::PropertyID::MarginRight,
+            CSS::PropertyID::PaddingTop,
+            CSS::PropertyID::PaddingBottom,
+            CSS::PropertyID::PaddingLeft,
+            CSS::PropertyID::PaddingRight,
+        };
+        for (CSS::PropertyID id : box_model_metrics) {
+            auto prop = layout_node()->style().property(id);
+            if (prop)
+                properties->set_property(id, prop.value());
+        }
+    }
+    return properties.ptr();
+}
diff --git a/Libraries/LibHTML/DOM/Element.h b/Libraries/LibHTML/DOM/Element.h
index cf53f8221a..e163aa26bc 100644
--- a/Libraries/LibHTML/DOM/Element.h
+++ b/Libraries/LibHTML/DOM/Element.h
@@ -57,6 +57,7 @@ public:
     String name() const { return attribute("name"); }
 
     const StyleProperties* resolved_style() const { return m_resolved_style.ptr(); }
+    RefPtr<StyleProperties> computed_style();
 
 private:
     RefPtr<LayoutNode> create_layout_node(const StyleProperties* parent_style) const override;