LibWeb: Move paint properties invalidation flag into Document

Move paint-only properties invalidation flag to Document for
consistency, as style and layout invalidation flags are already
managed there.

Userland/Libraries/LibWeb/DOM/Document.cpp

@@ -1060,10 +1060,8 @@ void Document::update_layout()
     // Broadcast the current viewport rect to any new paintables, so they know whether they're visible or not.
     inform_all_viewport_clients_about_the_current_viewport_rect();
 
-    if (navigable()) {
-        navigable()->set_needs_to_resolve_paint_only_properties();
-        navigable()->set_needs_display();
-    }
+    navigable()->set_needs_display();
+    set_needs_to_resolve_paint_only_properties();
 
     if (navigable()->is_traversable()) {
         page().client().page_did_layout();
@@ -1145,6 +1143,15 @@ void Document::update_style()
     m_style_update_timer->stop();
 }
 
+void Document::update_paint_and_hit_testing_properties_if_needed()
+{
+    if (!m_needs_to_resolve_paint_only_properties)
+        return;
+    m_needs_to_resolve_paint_only_properties = false;
+    if (auto* paintable = this->paintable())
+        paintable->resolve_paint_only_properties();
+}
+
 void Document::set_link_color(Color color)
 {
     m_link_color = color;

Userland/Libraries/LibWeb/DOM/Document.h

@@ -202,6 +202,7 @@ public:
 
     void update_style();
     void update_layout();
+    void update_paint_and_hit_testing_properties_if_needed();
 
     void set_needs_layout();
 
@@ -562,6 +563,8 @@ public:
 
     Element const* element_from_point(double x, double y);
 
+    void set_needs_to_resolve_paint_only_properties() { m_needs_to_resolve_paint_only_properties = true; }
+
 protected:
     virtual void initialize(JS::Realm&) override;
     virtual void visit_edges(Cell::Visitor&) override;
@@ -785,6 +788,8 @@ private:
     bool m_ready_to_run_scripts { false };
 
     Vector<HTML::FormAssociatedElement*> m_form_associated_elements_with_form_attribute;
+
+    bool m_needs_to_resolve_paint_only_properties { true };
 };
 
 template<>

Userland/Libraries/LibWeb/DOM/Element.cpp

@@ -593,8 +593,8 @@ Element::RequiredInvalidationAfterStyleChange Element::recompute_style()
     m_computed_css_values = move(new_computed_css_values);
     computed_css_values_changed();
 
-    if (invalidation.repaint && document().navigable())
-        document().navigable()->set_needs_to_resolve_paint_only_properties();
+    if (invalidation.repaint)
+        document().set_needs_to_resolve_paint_only_properties();
 
     if (!invalidation.rebuild_layout_tree && layout_node()) {
         // If we're keeping the layout tree, we can just apply the new style to the existing layout tree.

Userland/Libraries/LibWeb/HTML/Navigable.cpp

@@ -2106,10 +2106,7 @@ void Navigable::paint(Painting::RecordingPainter& recording_painter, PaintConfig
     context.set_should_paint_overlay(config.paint_overlay);
     context.set_has_focus(config.has_focus);
 
-    if (m_needs_to_resolve_paint_only_properties) {
-        document->paintable()->resolve_paint_only_properties();
-        m_needs_to_resolve_paint_only_properties = false;
-    }
+    document->update_paint_and_hit_testing_properties_if_needed();
 
     HashMap<Painting::PaintableBox const*, Painting::ViewportPaintable::ScrollFrame> scroll_frames;
     if (is_traversable()) {

Userland/Libraries/LibWeb/HTML/Navigable.h

@@ -180,8 +180,6 @@ public:
     };
     void paint(Painting::RecordingPainter&, PaintConfig);
 
-    void set_needs_to_resolve_paint_only_properties() { m_needs_to_resolve_paint_only_properties = true; }
-
 protected:
     Navigable();
 
@@ -223,8 +221,6 @@ private:
 
     CSSPixelSize m_size;
     CSSPixelPoint m_viewport_scroll_offset;
-
-    bool m_needs_to_resolve_paint_only_properties { true };
 };
 
 HashTable<Navigable*>& all_navigables();