2 files changed, 11 insertions, 11 deletions
diff --git a/include/cru/ui/render/layout_render_object.hpp b/include/cru/ui/render/layout_render_object.hpp
index 8700b8ba..5c4c9c5c 100644
--- a/include/cru/ui/render/layout_render_object.hpp
+++ b/include/cru/ui/render/layout_render_object.hpp
@@ -18,9 +18,9 @@ class LayoutRenderObject : public RenderObject {
 
   ~LayoutRenderObject() override = default;
 
-  ChildLayoutData* GetChildLayoutData(int position) {
+  ChildLayoutData* GetChildLayoutData(Index position) {
     Expects(position >= 0 &&
-           position < static_cast<int>(child_layout_data_.size()));
+            position < static_cast<Index>(child_layout_data_.size()));
     return &child_layout_data_[position];
   }
 
@@ -29,8 +29,8 @@ class LayoutRenderObject : public RenderObject {
   RenderObject* HitTest(const Point& point) override;
 
  protected:
-  void OnAddChild(RenderObject* new_child, int position) override;
-  void OnRemoveChild(RenderObject* removed_child, int position) override;
+  void OnAddChild(RenderObject* new_child, Index position) override;
+  void OnRemoveChild(RenderObject* removed_child, Index position) override;
 
  private:
   std::vector<ChildLayoutData> child_layout_data_{};
@@ -72,7 +72,7 @@ RenderObject* LayoutRenderObject<TChildLayoutData>::HitTest(
 
 template <typename TChildLayoutData>
 void LayoutRenderObject<TChildLayoutData>::OnAddChild(RenderObject* new_child,
-                                                      int position) {
+                                                      const Index position) {
   CRU_UNUSED(new_child)
 
   child_layout_data_.emplace(child_layout_data_.cbegin() + position);
@@ -80,7 +80,7 @@ void LayoutRenderObject<TChildLayoutData>::OnAddChild(RenderObject* new_child,
 
 template <typename TChildLayoutData>
 void LayoutRenderObject<TChildLayoutData>::OnRemoveChild(
-    RenderObject* removed_child, int position) {
+    RenderObject* removed_child, const Index position) {
   CRU_UNUSED(removed_child)
 
   child_layout_data_.erase(child_layout_data_.cbegin() + position);
diff --git a/include/cru/ui/render/render_object.hpp b/include/cru/ui/render/render_object.hpp
index ca31386a..33ef3d1a 100644
--- a/include/cru/ui/render/render_object.hpp
+++ b/include/cru/ui/render/render_object.hpp
@@ -53,9 +53,9 @@ class RenderObject : public Object {
   RenderObject* GetParent() const { return parent_; }
 
   const std::vector<RenderObject*>& GetChildren() const { return children_; }
-  int GetChildCount() const { return static_cast<int>(children_.size()); }
-  void AddChild(RenderObject* render_object, int position);
-  void RemoveChild(int position);
+  Index GetChildCount() const { return static_cast<Index>(children_.size()); }
+  void AddChild(RenderObject* render_object, Index position);
+  void RemoveChild(Index position);
 
   Point GetOffset() const { return offset_; }
   void SetOffset(const Point& offset) { offset_ = offset; }
@@ -99,9 +99,9 @@ class RenderObject : public Object {
                                RenderObject* new_parent);
 
   // default is to invalidate both layout and paint
-  virtual void OnAddChild(RenderObject* new_child, int position);
+  virtual void OnAddChild(RenderObject* new_child, Index position);
   // default is to invalidate both layout and paint
-  virtual void OnRemoveChild(RenderObject* removed_child, int position);
+  virtual void OnRemoveChild(RenderObject* removed_child, Index position);
 
   virtual void OnMeasureCore(const Size& available_size);
   virtual void OnLayoutCore(const Rect& rect);