2 files changed, 79 insertions, 0 deletions
diff --git a/include/cru/ui/components/Component.hpp b/include/cru/ui/components/Component.hpp
new file mode 100644
index 00000000..0dfc587b
--- /dev/null
+++ b/include/cru/ui/components/Component.hpp
@@ -0,0 +1,19 @@
+#pragma once
+#include "../Base.hpp"
+
+namespace cru::ui::components {
+// In destructor, component should check all owned controls whether it is
+// attached to window, if not, destroy them, otherwise it is host's duty to
+// destroy them.
+class Component : public Object {
+ public:
+  Component() = default;
+
+  CRU_DELETE_COPY(Component)
+  CRU_DELETE_MOVE(Component)
+
+  ~Component() = default;
+
+  virtual controls::Control* GetRootControl() = 0;
+};
+}  // namespace cru::ui::components
diff --git a/include/cru/ui/components/Menu.hpp b/include/cru/ui/components/Menu.hpp
new file mode 100644
index 00000000..dedf2bd5
--- /dev/null
+++ b/include/cru/ui/components/Menu.hpp
@@ -0,0 +1,60 @@
+#pragma once
+#include "Component.hpp"
+#include "cru/common/Base.hpp"
+#include "cru/ui/controls/Button.hpp"
+#include "cru/ui/controls/Control.hpp"
+#include "cru/ui/controls/FlexLayout.hpp"
+#include "cru/ui/controls/TextBlock.hpp"
+
+#include <string>
+#include <vector>
+
+namespace cru::ui::components {
+class MenuItem : public Component {
+ public:
+  MenuItem();
+  explicit MenuItem(std::u16string text);
+
+  CRU_DELETE_COPY(MenuItem)
+  CRU_DELETE_MOVE(MenuItem)
+
+  ~MenuItem();
+
+ public:
+  controls::Control* GetRootControl() override { return container_; }
+
+  void SetText(std::u16string text);
+
+ private:
+  controls::Button* container_;
+  controls::TextBlock* text_;
+};
+
+class Menu : public Component {
+ public:
+  Menu();
+
+  CRU_DELETE_COPY(Menu)
+  CRU_DELETE_MOVE(Menu)
+
+  ~Menu();
+
+ public:
+  gsl::index GetItemCount() const {
+    return static_cast<gsl::index>(items_.size());
+  }
+
+  void AddItem(Component* component) { AddItem(component, GetItemCount()); }
+  void AddItem(Component* component, gsl::index index);
+  Component* RemoveItem(gsl::index index);
+
+  void AddTextItem(std::u16string text) {
+    AddTextItem(std::move(text), GetItemCount());
+  }
+  void AddTextItem(std::u16string text, gsl::index index);
+
+ private:
+  controls::FlexLayout* container_;
+  std::vector<Component*> items_;
+};
+}  // namespace cru::ui::components