3 files changed, 64 insertions, 27 deletions
diff --git a/include/cru/ui/controls/Popup.hpp b/include/cru/ui/controls/Popup.hpp
index f17cd1b2..d76e1211 100644
--- a/include/cru/ui/controls/Popup.hpp
+++ b/include/cru/ui/controls/Popup.hpp
@@ -1,10 +1,13 @@
 #pragma once
-#include "LayoutControl.hpp"
+#include "RootControl.hpp"
+
+#include "cru/ui/Base.hpp"
+#include "cru/platform/gui/Base.hpp"
 
 #include <memory>
 
 namespace cru::ui::controls {
-class Popup : public LayoutControl {
+class Popup : public RootControl {
  public:
   explicit Popup(Control* attached_control = nullptr);
 
@@ -13,11 +16,9 @@ class Popup : public LayoutControl {
 
   ~Popup() override;
 
- private:
-  std::unique_ptr<host::WindowHost> window_host_;
-
-  std::unique_ptr<render::StackLayoutRenderObject> render_object_;
-
-  Control* attached_control_;
+ protected:
+  gsl::not_null<platform::gui::INativeWindow*> CreateNativeWindow(
+      gsl::not_null<host::WindowHost*> host,
+      platform::gui::INativeWindow* parent) override;
 };
 }  // namespace cru::ui::controls
diff --git a/include/cru/ui/controls/RootControl.hpp b/include/cru/ui/controls/RootControl.hpp
new file mode 100644
index 00000000..ff1b545a
--- /dev/null
+++ b/include/cru/ui/controls/RootControl.hpp
@@ -0,0 +1,40 @@
+#pragma once
+#include "LayoutControl.hpp"
+
+#include "cru/common/Base.hpp"
+#include "cru/platform/gui/Base.hpp"
+#include "cru/ui/Base.hpp"
+
+namespace cru::ui::controls {
+class RootControl : public LayoutControl {
+ protected:
+  explicit RootControl(Control* attached_control);
+
+ public:
+  CRU_DELETE_COPY(RootControl)
+  CRU_DELETE_MOVE(RootControl)
+  ~RootControl() override;
+
+ public:
+  render::RenderObject* GetRenderObject() const override;
+
+  // If create is false and native window is not create, it will not be created
+  // and shown.
+  void Show(bool create = true);
+
+ protected:
+  virtual gsl::not_null<platform::gui::INativeWindow*> CreateNativeWindow(
+      gsl::not_null<host::WindowHost*> host,
+      platform::gui::INativeWindow* parent) = 0;
+
+ private:
+  platform::gui::INativeWindow* GetNativeWindow(bool create);
+
+ private:
+  std::unique_ptr<host::WindowHost> window_host_;
+
+  std::unique_ptr<render::StackLayoutRenderObject> render_object_;
+
+  Control* attached_control_;
+};
+}  // namespace cru::ui::controls
diff --git a/include/cru/ui/controls/Window.hpp b/include/cru/ui/controls/Window.hpp
index 996bc75e..cca56b64 100644
--- a/include/cru/ui/controls/Window.hpp
+++ b/include/cru/ui/controls/Window.hpp
@@ -1,36 +1,32 @@
 #pragma once
-#include "LayoutControl.hpp"
+#include "cru/platform/gui/Base.hpp"
+#include "cru/ui/controls/RootControl.hpp"
+
+#include "cru/common/Base.hpp"
 
 namespace cru::ui::controls {
-class Window final : public LayoutControl {
+class Window final : public RootControl {
  public:
   static constexpr std::u16string_view control_type = u"Window";
 
  public:
-  static Window* CreateOverlapped();
+  static Window* Create(Control* attached_control = nullptr);
 
  private:
-  Window();
+  explicit Window(Control* attached_control);
 
  public:
-  Window(const Window& other) = delete;
-  Window(Window&& other) = delete;
-  Window& operator=(const Window& other) = delete;
-  Window& operator=(Window&& other) = delete;
+  CRU_DELETE_COPY(Window)
+  CRU_DELETE_MOVE(Window)
+
   ~Window() override;
 
  public:
-  std::u16string_view GetControlType() const final;
-
-  render::RenderObject* GetRenderObject() const override;
-
-  // If create is false and native window is not create, it will not be created
-  // and shown.
-  void Show(bool create = true);
-
- private:
-  std::unique_ptr<host::WindowHost> window_host_;
+  std::u16string_view GetControlType() const final { return control_type; }
 
-  std::unique_ptr<render::StackLayoutRenderObject> render_object_;
+ protected:
+  gsl::not_null<platform::gui::INativeWindow*> CreateNativeWindow(
+      gsl::not_null<host::WindowHost*> host,
+      platform::gui::INativeWindow* parent) override;
 };
 }  // namespace cru::ui::controls