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1 files changed, 37 insertions, 0 deletions

diff --git a/include/cru/ui/controls/LayoutControl.h b/include/cru/ui/controls/LayoutControl.h
new file mode 100644
index 00000000..639ecc74
--- /dev/null
+++ b/include/cru/ui/controls/LayoutControl.h
@@ -0,0 +1,37 @@
+#pragma once
+#include "Control.h"
+
+namespace cru::ui::controls {
+class CRU_UI_API LayoutControl : public Control {
+ protected:
+  LayoutControl() = default;
+  explicit LayoutControl(render::RenderObject* container_render_object)
+      : container_render_object_(container_render_object) {}
+
+ public:
+  LayoutControl(const LayoutControl& other) = delete;
+  LayoutControl(LayoutControl&& other) = delete;
+  LayoutControl& operator=(const LayoutControl& other) = delete;
+  LayoutControl& operator=(LayoutControl&& other) = delete;
+  ~LayoutControl() override = default;
+
+  using Control::AddChild;
+  using Control::RemoveChild;
+
+  void ClearChildren();
+
+ protected:
+  // If container render object is not null. Render object of added or removed
+  // child control will automatically sync to the container render object.
+  render::RenderObject* GetContainerRenderObject() const;
+  void SetContainerRenderObject(render::RenderObject* ro) {
+    container_render_object_ = ro;
+  }
+
+  void OnAddChild(Control* child, Index position) override;
+  void OnRemoveChild(Control* child, Index position) override;
+
+ private:
+  render::RenderObject* container_render_object_ = nullptr;
+};
+}  // namespace cru::ui::controls