Initial UI in src

src/UI/UI_checkbox.cpp

@@ -0,0 +1,83 @@
+#include "UI_checkbox.hpp"
+
+UI_checkbox::UI_checkbox()
+    : UI_x_boxes(UI_CHECKBOX_TYPE), p_selected(), p_on_change(nullptr)
+{
+}
+
+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)
+    : UI_x_boxes(id, UI_CHECKBOX_TYPE, text, fg_color, bg_color, options), p_selected(), p_on_change(on_change)
+{
+}
+
+UI_checkbox::UI_checkbox(const json& j) : 
+UI_x_boxes(UI_CHECKBOX_TYPE), p_selected(), p_on_change(nullptr)
+{
+    from_json(j);
+}
+
+void UI_checkbox::toggle_selected(size_t selected)
+{
+    if (selected >= p_options.size())
+        return;
+    
+    if (p_selected[selected] != p_selected[selected])
+    {
+        p_selected[selected] = !p_selected[selected];
+        if (p_on_change != nullptr)
+        {
+            p_on_change(p_id, selected_text());
+        }
+    }
+}
+
+void UI_checkbox::toggle_selected(std::string selected)
+{
+    for (size_t i = 0; i < p_options.size(); i++)
+    {
+        if (p_options[i] == selected)
+        {
+            toggle_selected(i);
+            return;
+        }
+    }
+}
+
+std::vector<bool> UI_checkbox::selected() const
+{
+    return p_selected;
+}
+
+std::vector<std::string> UI_checkbox::selected_text() const
+{
+    std::vector<std::string> selected_text;
+    for (size_t i = 0; i < p_options.size(); i++)
+    {
+        if (p_selected[i])
+        {
+            selected_text.push_back(p_options[i]);
+        }
+    }
+    return selected_text;
+}
+
+void UI_checkbox::from_json(const json& j)
+{
+    UI_x_boxes::from_json(j);
+    
+    if (j.contains("selected"))
+    {
+        p_selected.clear();
+        for (auto selected : j["selected"])
+        {
+            p_selected.push_back(selected);
+        }
+    }
+}
+
+json UI_checkbox::to_json() const
+{
+    json j = UI_x_boxes::to_json();
+    j["selected"] = p_selected;
+    return j;
+}