Move UI folder

UI/UI_combobox.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "UI_item.hpp"
+#include "UI_x_boxes.hpp"
+#include <functional>
+
+#define UI_COMBOBOX_TYPE std::string("UI_combobox")
+
+class UI_combobox : public UI_x_boxes
+{
+    Q_OBJECT
+  public:
+    UI_combobox(QObject *parent = nullptr);
+    UI_combobox(Color fg_color, Color bg_color, std::vector<std::string> options, size_t selected = 0,
+                QObject *parent = nullptr);
+    UI_combobox(const json &j, QObject *parent = nullptr);
+
+    void set_selected(size_t selected);
+    void set_selected(std::string selected) override;
+    size_t selected() const;
+    std::string selected_text() const;
+
+    void from_json(const json &j) override;
+    json to_json(size_t id) const override;
+  signals:
+    void on_change(std::string selected);
+
+  private:
+    size_t m_selected;
+};