diff --git a/libs/ui/include/psemek/ui/selector.hpp b/libs/ui/include/psemek/ui/selector.hpp
index a1f6e316..5c753c5b 100644
--- a/libs/ui/include/psemek/ui/selector.hpp
+++ b/libs/ui/include/psemek/ui/selector.hpp
@@ -26,8 +26,9 @@ namespace psemek::ui
 
 		virtual std::size_t size() const;
 		virtual void resize(std::size_t size);
-		virtual void add(std::shared_ptr<element> child);
-		virtual std::shared_ptr<element> get(std::size_t index);
+		virtual void add(std::shared_ptr<element> child, bool submenu = false);
+		virtual std::shared_ptr<element> get(std::size_t index) const;
+		virtual bool submenu(std::size_t index) const;
 		virtual void clear();
 
 		virtual std::optional<std::size_t> selected() const { return selected_; }
@@ -35,6 +36,9 @@ namespace psemek::ui
 
 	protected:
 
+		// extra width for each element with a submenu
+		virtual int submenu_extra() const { return 0; }
+
 		// extra distance between successive elements
 		virtual int y_extra() const { return 0; }
 
@@ -43,6 +47,7 @@ namespace psemek::ui
 	private:
 		container_impl container_;
 		box_shape shape_;
+		std::vector<bool> submenu_;
 
 		std::optional<std::size_t> selected_;
 
diff --git a/libs/ui/source/selector.cpp b/libs/ui/source/selector.cpp
index 1adda650..5926142b 100644
--- a/libs/ui/source/selector.cpp
+++ b/libs/ui/source/selector.cpp
@@ -52,22 +52,27 @@ namespace psemek::ui
 
 	geom::box<float, 2> selector::size_constraints() const
 	{
+		auto st = merged_own_style();
+
 		auto x_range = geom::interval<float>::full();
 
 		float y_sum = 0.f;
 
-		for (auto c : children())
+		for (std::size_t i = 0; i < size(); ++i)
 		{
+			auto c = get(i);
 			if (!c) continue;
 
 			auto sc = c->size_constraints();
+
+			if (submenu_[i])
+				sc[0] += *st->scale * submenu_extra();
+
 			x_range &= sc[0];
 
 			y_sum += sc[1].min;
 		}
 
-		auto st = merged_own_style();
-
 		x_range += (*st->inner_margin)[0] * 2.f;
 
 		y_sum += (*st->inner_margin)[1] * 2.f * container_.size();
@@ -81,16 +86,21 @@ namespace psemek::ui
 	{
 		auto const p = geom::cast<float>(e.position);
 
-		selected_ = std::nullopt;
+		std::optional<std::size_t> new_selected;
 		for (std::size_t i = 0; i < child_boxes_.size(); ++i)
 		{
 			if (geom::contains(child_boxes_[i], p))
 			{
-				selected_ = i;
+				new_selected = i;
 				break;
 			}
 		}
 
+		if (new_selected && new_selected != selected_ && submenu_[*new_selected] && callback_)
+			post([cb = callback_, i = *new_selected]{ cb(i); });
+
+		selected_ = new_selected;
+
 		return true;
 	}
 
@@ -98,7 +108,7 @@ namespace psemek::ui
 	{
 		if (e.down && e.button == mouse_button::left && selected_)
 		{
-			if (callback_)
+			if (!submenu_[*selected_] && callback_)
 				post([cb = callback_, i = *selected_]{ cb(i); });
 			return true;
 		}
@@ -114,21 +124,31 @@ namespace psemek::ui
 	void selector::resize(std::size_t size)
 	{
 		container_.resize(size);
+		submenu_.resize(size);
 	}
 
-	void selector::add(std::shared_ptr<element> child)
+	void selector::add(std::shared_ptr<element> child, bool submenu)
 	{
-		container_.add(child);
+		std::size_t index = container_.add(child);
+		if (index >= submenu_.size())
+			submenu_.resize(index + 1);
+		submenu_[index] = submenu;
 	}
 
-	std::shared_ptr<element> selector::get(std::size_t index)
+	std::shared_ptr<element> selector::get(std::size_t index) const
 	{
 		return container_.get(index);
 	}
 
+	bool selector::submenu(std::size_t index) const
+	{
+		return submenu_[index];
+	}
+
 	void selector::clear()
 	{
 		container_.clear();
+		submenu_.clear();
 	}
 
 	void selector::on_selected(std::function<void(std::size_t)> callback)