LibWeb: Invalidate element style after setting Element.style.foo

This makes us recompute style for the element so the change actually
takes effect. :^)

1 files changed, 18 insertions, 3 deletions

diff --git a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.h b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.h
index d96b94a687..70f226e968 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.h
+++ b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.h
@@ -50,21 +50,36 @@ public:
         return adopt(*new CSSStyleDeclaration(move(properties)));
     }
 
-    ~CSSStyleDeclaration();
+    virtual ~CSSStyleDeclaration();
 
     const Vector<StyleProperty>& properties() const { return m_properties; }
 
     size_t length() const { return m_properties.size(); }
     String item(size_t index) const;
 
+protected:
+    explicit CSSStyleDeclaration(Vector<StyleProperty>&&);
+
 private:
     friend class Bindings::CSSStyleDeclarationWrapper;
 
-    explicit CSSStyleDeclaration(Vector<StyleProperty>&&);
-
     Vector<StyleProperty> m_properties;
 };
 
+class ElementInlineCSSStyleDeclaration final : public CSSStyleDeclaration {
+public:
+    static NonnullRefPtr<ElementInlineCSSStyleDeclaration> create(DOM::Element& element) { return adopt(*new ElementInlineCSSStyleDeclaration(element)); }
+    virtual ~ElementInlineCSSStyleDeclaration() override;
+
+    DOM::Element* element() { return m_element.ptr(); }
+    const DOM::Element* element() const { return m_element.ptr(); }
+
+private:
+    explicit ElementInlineCSSStyleDeclaration(DOM::Element&);
+
+    WeakPtr<DOM::Element> m_element;
+};
+
 }
 
 namespace Web::Bindings {