Initial UI in src

src/UI/UI_checkbox.hpp

@@ -0,0 +1,27 @@
+#pragma once
+#include <cstdint>
+#include "UI_item.hpp"
+#include "UI_x_boxes.hpp"
+
+#define UI_CHECKBOX_TYPE std::string("UIcheckbox")
+typedef void (*UI_checkbox_on_change) (std::string id, std::vector<std::string> selected);
+
+class UI_checkbox : UI_x_boxes
+{
+    public:
+        UI_checkbox();
+        UI_checkbox(std::string id, std::string text, Color fg_color, Color bg_color, std::vector<std::string> options, UI_checkbox_on_change on_change = nullptr);
+        UI_checkbox(const json& j);
+
+        void toggle_selected(size_t selected);
+        void toggle_selected(std::string selected);
+        std::vector<bool> selected() const;
+        std::vector<std::string> selected_text() const;
+    
+        void from_json(const json& j) override;
+        json to_json() const override;
+    private:
+        std::vector<bool> p_selected;
+
+        UI_checkbox_on_change p_on_change;
+};