Move to id is size_t

src/UI/UI_button.cpp

@@ -1,7 +1,7 @@
 #include "UI_button.hpp"
 
-UI_button::UI_button(std::string id, std::string text, Color fg_color, Color bg_color, QObject *parrent)
+UI_button::UI_button(std::string text, Color fg_color, Color bg_color, QObject *parrent)
-    : UI_item(id, UI_BUTTON_TYPE, text, 12, fg_color, bg_color, parrent)
+    : UI_item(UI_BUTTON_TYPE, text, 12, fg_color, bg_color, parrent)
 {
 }
 
@@ -15,13 +15,13 @@ void UI_button::from_json(const json &j)
     UI_item::from_json(j);
 }
 
-json UI_button::to_json() const
+json UI_button::to_json(size_t id) const
 {
-    json j = UI_item::to_json();
+    json j = UI_item::to_json(id);
     return j;
 }
 
 void UI_button::click()
 {
-    emit on_click(m_id);
+    emit on_click();
 }

src/UI/UI_button.hpp

@@ -8,14 +8,14 @@ class UI_button : public UI_item
 {
     Q_OBJECT
   public:
-    UI_button(std::string id, std::string text, Color fg_color, Color bg_color, QObject *parrent = nullptr);
+    UI_button(std::string text, Color fg_color, Color bg_color, QObject *parrent = nullptr);
     UI_button(const json &j, QObject *parrent = nullptr);
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
 
     void click() override;
 
   signals:
-    void on_click(std::string id);
+    void on_click();
 };

src/UI/UI_checkbox.cpp

@@ -4,9 +4,9 @@ UI_checkbox::UI_checkbox(QObject *parrent) : UI_x_boxes(UI_CHECKBOX_TYPE, parren
 {
 }
 
-UI_checkbox::UI_checkbox(std::string id, std::string text, Color fg_color, Color bg_color,
+UI_checkbox::UI_checkbox(std::string text, Color fg_color, Color bg_color,
                          std::vector<std::string> options, QObject *parrent)
-    : UI_x_boxes(id, UI_CHECKBOX_TYPE, text, fg_color, bg_color, options, parrent), m_selected()
+    : UI_x_boxes(UI_CHECKBOX_TYPE, text, fg_color, bg_color, options, parrent), m_selected()
 {
     for (size_t i = 0; i < m_options.size(); i++)
     {
@@ -25,7 +25,7 @@ void UI_checkbox::toggle_selected(size_t selected)
         return;
     m_selected[selected] = !m_selected[selected];
     emit value_changed();
-    emit on_change(m_id, selected_text()[selected]);
+    emit on_change(selected_text()[selected]);
 }
 
 void UI_checkbox::toggle_selected(std::string selected)
@@ -72,9 +72,9 @@ void UI_checkbox::from_json(const json &j)
     }
 }
 
-json UI_checkbox::to_json() const
+json UI_checkbox::to_json(size_t id) const
 {
-    json j = UI_x_boxes::to_json();
+    json j = UI_x_boxes::to_json(id);
     j["selected"] = m_selected;
     return j;
 }

src/UI/UI_checkbox.hpp

@@ -10,7 +10,7 @@ class UI_checkbox : public UI_x_boxes
     Q_OBJECT
   public:
     UI_checkbox(QObject *parrent = nullptr);
-    UI_checkbox(std::string id, std::string text, Color fg_color, Color bg_color, std::vector<std::string> options,
+    UI_checkbox(std::string text, Color fg_color, Color bg_color, std::vector<std::string> options,
                 QObject *parrent = nullptr);
     UI_checkbox(const json &j, QObject *parrent = nullptr);
 
@@ -20,10 +20,10 @@ class UI_checkbox : public UI_x_boxes
     std::vector<std::string> selected_text() const;
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
 
   signals:
-    void on_change(std::string, std::string);
+    void on_change(std::string);
 
   private:
     std::vector<bool> m_selected;

src/UI/UI_combobox.cpp

@@ -4,9 +4,9 @@ UI_combobox::UI_combobox(QObject *parrent) : UI_x_boxes(UI_COMBOBOX_TYPE, parren
 {
 }
 
-UI_combobox::UI_combobox(std::string id, std::string text, Color fg_color, Color bg_color,
+UI_combobox::UI_combobox(std::string text, Color fg_color, Color bg_color,
                          std::vector<std::string> options, size_t selected, QObject *parrent)
-    : UI_x_boxes(id, UI_COMBOBOX_TYPE, text, fg_color, bg_color, options, parrent), m_selected(selected)
+    : UI_x_boxes(UI_COMBOBOX_TYPE, text, fg_color, bg_color, options, parrent), m_selected(selected)
 {
 }
 
@@ -21,7 +21,7 @@ void UI_combobox::set_selected(size_t selected)
         return;
     m_selected = selected;
     emit value_changed();
-    emit on_change(m_id, selected_text());
+    emit on_change(selected_text());
 }
 
 void UI_combobox::set_selected(std::string selected)
@@ -60,9 +60,9 @@ void UI_combobox::from_json(const json &j)
     }
 }
 
-json UI_combobox::to_json() const
+json UI_combobox::to_json(size_t id) const
 {
-    json j = UI_x_boxes::to_json();
+    json j = UI_x_boxes::to_json(id);
     j["selected"] = m_options[m_selected];
     return j;
 }

src/UI/UI_combobox.hpp

@@ -11,7 +11,7 @@ class UI_combobox : public UI_x_boxes
     Q_OBJECT
   public:
     UI_combobox(QObject *parrent = nullptr);
-    UI_combobox(std::string id, std::string text, Color fg_color, Color bg_color, std::vector<std::string> options,
+    UI_combobox(std::string text, Color fg_color, Color bg_color, std::vector<std::string> options,
                 size_t selected = 0, QObject *parrent = nullptr);
     UI_combobox(const json &j, QObject *parrent = nullptr);
 
@@ -21,9 +21,9 @@ class UI_combobox : public UI_x_boxes
     std::string selected_text() const;
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
   signals:
-    void on_change(std::string id, std::string selected);
+    void on_change(std::string selected);
 
   private:
     size_t m_selected;

src/UI/UI_dial.cpp

@@ -1,8 +1,8 @@
 #include "UI_dial.hpp"
 
-UI_dial::UI_dial(std::string id, std::string text, Color fg_color, Color bg_color, double min, double max, double value,
+UI_dial::UI_dial(std::string text, Color fg_color, Color bg_color, double min, double max, double value,
                  QObject *parrent)
-    : UI_item(id, UI_DIAL_TYPE, text, 12, fg_color, bg_color, parrent), m_min(min), m_max(max), m_value(value)
+    : UI_item(UI_DIAL_TYPE, text, 12, fg_color, bg_color, parrent), m_min(min), m_max(max), m_value(value)
 {
 }
 
@@ -46,9 +46,9 @@ void UI_dial::from_json(const json &j)
     this->m_value = j.at("value");
 }
 
-json UI_dial::to_json() const
+json UI_dial::to_json(size_t id) const
 {
-    json j = UI_item::to_json();
+    json j = UI_item::to_json(id);
     j["min"] = this->m_min;
     j["max"] = this->m_max;
     j["value"] = this->m_value;

src/UI/UI_dial.hpp

@@ -7,7 +7,7 @@ class UI_dial : public UI_item
 {
     Q_OBJECT
   public:
-    UI_dial(std::string id, std::string text, Color fg_color, Color bg_color, double min, double max, double value,
+    UI_dial(std::string text, Color fg_color, Color bg_color, double min, double max, double value,
             QObject *parrent = nullptr);
     UI_dial(const json &j, QObject *parrent = nullptr);
 
@@ -18,7 +18,7 @@ class UI_dial : public UI_item
     double max() const;
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
 
   private:
     double m_min;

src/UI/UI_item.cpp

@@ -1,14 +1,14 @@
 #include "UI_item.hpp"
 
-UI_item::UI_item(std::string id, std::string type, std::string text, uint8_t text_size, Color fg_color, Color bg_color,
+UI_item::UI_item(std::string type, std::string text, uint8_t text_size, Color fg_color, Color bg_color,
                  QObject *parrent)
-    : QObject(parrent), m_id(id), m_type(type), m_text(text), m_text_size(text_size), m_fg_color(fg_color),
+    : QObject(parrent), m_id((size_t)-1), m_type(type), m_text(text), m_text_size(text_size), m_fg_color(fg_color),
       m_bg_color(bg_color), enabled(true), visible(true)
 {
 }
 
 UI_item::UI_item(std::string type, QObject *parrent)
-    : QObject(parrent), m_id(""), m_type(type), m_text(""), m_text_size(12), m_fg_color(Color::Black),
+    : QObject(parrent), m_id((size_t)-1), m_type(type), m_text(""), m_text_size(12), m_fg_color(Color::Black),
       m_bg_color(Color::White), enabled(true), visible(true)
 {
 }
@@ -22,11 +22,6 @@ UI_item::~UI_item()
 {
 }
 
-std::string UI_item::id() const
-{
-    return m_id;
-}
-
 std::string UI_item::type() const
 {
     return m_type;
@@ -142,10 +137,10 @@ void UI_item::from_json(const json &j)
     j.at("visible").get_to(visible);
 }
 
-json UI_item::to_json() const
+json UI_item::to_json(size_t id) const
 {
     json j;
-    j["id"] = m_id;
+    j["id"] = id;
     j["type"] = m_type;
     j["text"] = m_text;
     j["text_size"] = m_text_size;

src/UI/UI_item.hpp

@@ -16,12 +16,11 @@ class UI_item : public QObject
     Q_OBJECT
   public:
     explicit UI_item(std::string type, QObject *parrent = nullptr);
-    explicit UI_item(std::string id, std::string type, std::string text, uint8_t text_size, Color fg_color,
+    explicit UI_item(std::string type, std::string text, uint8_t text_size, Color fg_color,
                      Color bg_color, QObject *parrent = nullptr);
     explicit UI_item(const json &j, QObject *parrent = nullptr);
     ~UI_item();
 
-    std::string id() const;
     std::string type() const;
     bool is_type(json j);
 
@@ -45,7 +44,7 @@ class UI_item : public QObject
 
     virtual void from_json(const json &j);
 
-    virtual json to_json() const;
+    virtual json to_json(size_t id) const;
 
     virtual void click();
     virtual void set_selected(std::string selected);
@@ -55,7 +54,7 @@ class UI_item : public QObject
     void value_changed();
 
   protected:
-    std::string m_id;
+    size_t m_id;
     std::string m_type;
     std::string m_text;
     uint8_t m_text_size;

src/UI/UI_label.cpp

@@ -1,7 +1,7 @@
 #include "UI_label.hpp"
 
-UI_label::UI_label(std::string id, std::string text, Color fg_color, Color bg_color, QObject *parrent)
+UI_label::UI_label(std::string text, Color fg_color, Color bg_color, QObject *parrent)
-    : UI_item(id, UI_LABEL_TYPE, text, 12, fg_color, bg_color, parrent)
+    : UI_item(UI_LABEL_TYPE, text, 12, fg_color, bg_color, parrent)
 {
 }
 
@@ -15,7 +15,7 @@ void UI_label::from_json(const json &j)
     UI_item::from_json(j);
 }
 
-json UI_label::to_json() const
+json UI_label::to_json(size_t id) const
 {
-    return UI_item::to_json();
+    return UI_item::to_json(id);
 }

src/UI/UI_label.hpp

@@ -8,9 +8,9 @@ class UI_label : public UI_item
 {
     Q_OBJECT
   public:
-    UI_label(std::string id, std::string text, Color fg_color, Color bg_color, QObject *parrent = nullptr);
+    UI_label(std::string text, Color fg_color, Color bg_color, QObject *parrent = nullptr);
     UI_label(const json &j, QObject *parrent = nullptr);
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
 };

src/UI/UI_led.cpp

@@ -1,7 +1,7 @@
 #include "UI_led.hpp"
 
-UI_led::UI_led(std::string id, std::string text, Color fg_color, Color bg_color, Color led_color, QObject *parrent)
+UI_led::UI_led(std::string text, Color fg_color, Color bg_color, Color led_color, QObject *parrent)
-    : UI_item(id, UI_LED_TYPE, text, 12, fg_color, bg_color, parrent), m_led_color(led_color)
+    : UI_item(UI_LED_TYPE, text, 12, fg_color, bg_color, parrent), m_led_color(led_color)
 {
 }
 
@@ -32,9 +32,9 @@ void UI_led::from_json(const json &j)
     m_led_color = Color(color);
 }
 
-json UI_led::to_json() const
+json UI_led::to_json(size_t id) const
 {
-    json j = UI_item::to_json();
+    json j = UI_item::to_json(id);
     j["led_color"] = m_led_color.to_hex();
     return j;
 }

src/UI/UI_led.hpp

@@ -8,7 +8,7 @@ class UI_led : public UI_item
 {
     Q_OBJECT
   public:
-    UI_led(std::string id, std::string text, Color fg_color, Color bg_color, Color led_color,
+    UI_led(std::string text, Color fg_color, Color bg_color, Color led_color,
            QObject *parrent = nullptr);
     UI_led(const json &j, QObject *parrent = nullptr);
 
@@ -16,7 +16,7 @@ class UI_led : public UI_item
     void set_led_color(Color led_color);
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
 
   private:
     Color m_led_color;

src/UI/UI_slider.cpp

@@ -1,8 +1,8 @@
 #include "UI_slider.hpp"
 
-UI_slider::UI_slider(std::string id, std::string text, Color fg_color, Color bg_color, double min, double max,
+UI_slider::UI_slider(std::string text, Color fg_color, Color bg_color, double min, double max,
                      double value, QObject *parrent)
-    : UI_item(id, UI_SLIDER_TYPE, text, 12, fg_color, bg_color, parrent), m_min(min), m_max(max), m_value(value)
+    : UI_item(UI_SLIDER_TYPE, text, 12, fg_color, bg_color, parrent), m_min(min), m_max(max), m_value(value)
 {
 }
 
@@ -20,7 +20,7 @@ void UI_slider::set_value(double value)
 
     this->m_value = value;
     emit value_changed();
-    emit on_change(m_id, m_value);
+    emit on_change(m_value);
 }
 
 double UI_slider::value() const
@@ -47,9 +47,9 @@ void UI_slider::from_json(const json &j)
     this->m_value = j.at("value");
 }
 
-json UI_slider::to_json() const
+json UI_slider::to_json(size_t id) const
 {
-    json j = UI_item::to_json();
+    json j = UI_item::to_json(id);
     j["min"] = this->m_min;
     j["max"] = this->m_max;
     j["value"] = this->m_value;

src/UI/UI_slider.hpp

@@ -7,7 +7,7 @@ class UI_slider : public UI_item
 {
     Q_OBJECT
   public:
-    UI_slider(std::string id, std::string text, Color fg_color, Color bg_color, double min, double max, double value,
+    UI_slider(std::string text, Color fg_color, Color bg_color, double min, double max, double value,
               QObject *parrent = nullptr);
     UI_slider(const json &j, QObject *parrent = nullptr);
 
@@ -18,9 +18,9 @@ class UI_slider : public UI_item
     double max() const;
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
   signals:
-    void on_change(std::string id, double value);
+    void on_change(double value);
 
   private:
     double m_min;

src/UI/UI_textbox.cpp

@@ -1,7 +1,7 @@
 #include "UI_textbox.hpp"
 
-UI_textbox::UI_textbox(std::string id, std::string hint, Color fg_color, Color bg_color, QObject *parrent)
+UI_textbox::UI_textbox(std::string hint, Color fg_color, Color bg_color, QObject *parrent)
-    : UI_item(id, UI_TEXTBOX_TYPE, "", 0, fg_color, bg_color, parrent), m_hint(hint)
+    : UI_item(UI_TEXTBOX_TYPE, "", 0, fg_color, bg_color, parrent), m_hint(hint)
 {
 }
 
@@ -16,7 +16,7 @@ void UI_textbox::set_text(std::string text)
         return;
     m_text = text;
     emit value_changed();
-    emit on_change(m_id, m_text);
+    emit on_change(m_text);
 }
 
 void UI_textbox::set_hint(std::string hint)
@@ -36,9 +36,9 @@ void UI_textbox::from_json(const json &j)
     m_hint = j.at("hint");
 }
 
-json UI_textbox::to_json() const
+json UI_textbox::to_json(size_t id) const
 {
-    json j = UI_item::to_json();
+    json j = UI_item::to_json(id);
     j["hint"] = m_hint;
     return j;
 }

src/UI/UI_textbox.hpp

@@ -8,7 +8,7 @@ class UI_textbox : public UI_item
 {
     Q_OBJECT
   public:
-    UI_textbox(std::string id, std::string hint, Color fg_color, Color bg_color, QObject *parrent = nullptr);
+    UI_textbox(std::string hint, Color fg_color, Color bg_color, QObject *parrent = nullptr);
     UI_textbox(const json &j, QObject *parrent = nullptr);
 
     void set_text(std::string text) override;
@@ -17,9 +17,9 @@ class UI_textbox : public UI_item
     std::string hint() const;
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
   signals:
-    void on_change(std::string id, std::string text);
+    void on_change(std::string text);
 
   private:
     std::string m_hint;

src/UI/UI_thermo.cpp

@@ -1,8 +1,8 @@
 #include "UI_thermo.hpp"
 
-UI_thermo::UI_thermo(std::string id, std::string text, Color fg_color, Color bg_color, double min, double max,
+UI_thermo::UI_thermo(std::string text, Color fg_color, Color bg_color, double min, double max,
                      double value, QObject *parrent)
-    : UI_item(id, UI_THERMO_TYPE, text, 12, fg_color, bg_color, parrent), m_min(min), m_max(max), m_value(value)
+    : UI_item(UI_THERMO_TYPE, text, 12, fg_color, bg_color, parrent), m_min(min), m_max(max), m_value(value)
 {
 }
 
@@ -103,9 +103,9 @@ void UI_thermo::from_json(const json &j)
     }
 }
 
-json UI_thermo::to_json() const
+json UI_thermo::to_json(size_t id) const
 {
-    json j = UI_item::to_json();
+    json j = UI_item::to_json(id);
     j["min"] = this->m_min;
     j["max"] = this->m_max;
     j["value"] = this->m_value;

src/UI/UI_thermo.hpp

@@ -8,7 +8,7 @@ class UI_thermo : public UI_item
 {
     Q_OBJECT
   public:
-    UI_thermo(std::string id, std::string text, Color fg_color, Color bg_color, double min, double max, double value,
+    UI_thermo(std::string text, Color fg_color, Color bg_color, double min, double max, double value,
               QObject *parrent = nullptr);
     UI_thermo(const json &j, QObject *parrent = nullptr);
 
@@ -26,7 +26,7 @@ class UI_thermo : public UI_item
     void remove_color_stop_normalized(double value);
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
 
   private:
     double m_min;

src/UI/UI_x_boxes.cpp

@@ -4,9 +4,9 @@ UI_x_boxes::UI_x_boxes(std::string type, QObject *parrent) : UI_item(type, parre
 {
 }
 
-UI_x_boxes::UI_x_boxes(std::string id, std::string type, std::string text, Color fg_color, Color bg_color,
+UI_x_boxes::UI_x_boxes(std::string type, std::string text, Color fg_color, Color bg_color,
                        std::vector<std::string> options, QObject *parrent)
-    : UI_item(id, type, text, 12, fg_color, bg_color, parrent), m_options(options)
+    : UI_item(type, text, 12, fg_color, bg_color, parrent), m_options(options)
 {
 }
 
@@ -23,9 +23,9 @@ void UI_x_boxes::from_json(const json &j)
     }
 }
 
-json UI_x_boxes::to_json() const
+json UI_x_boxes::to_json(size_t id) const
 {
-    json j = UI_item::to_json();
+    json j = UI_item::to_json(id);
     j["options"] = this->m_options;
     return j;
 }

src/UI/UI_x_boxes.hpp

@@ -7,11 +7,11 @@ class UI_x_boxes : public UI_item
     Q_OBJECT
   public:
     UI_x_boxes(std::string type, QObject *parrent = nullptr);
-    UI_x_boxes(std::string id, std::string type, std::string text, Color fg_color, Color bg_color,
+    UI_x_boxes(std::string type, std::string text, Color fg_color, Color bg_color,
                std::vector<std::string> options, QObject *parrent = nullptr);
 
     void from_json(const json &j) override;
-    json to_json() const override;
+    json to_json(size_t id) const override;
 
   protected:
     std::vector<std::string> m_options;

tools/message_parser.cpp

@@ -30,9 +30,9 @@ json Simulators::command_parser(json command)
         switch (cmd)
         {
         case Command::get_UI_element:
-            spdlog::info("Command {}: {}", type, std::string(command.at("id")));
+            spdlog::info("Command {}: {}", type, (size_t)command.at("id"));
             j["response"]["type"] = type;
-            j["response"]["UI_item"] = invoke_active_simulator()->get_UI_item(command.at("id"))->to_json();
+            j["response"]["UI_item"] = invoke_active_simulator()->get_UI_item(command.at("id"))->to_json(command.at("id"));
             break;
         case Command::get_UI_elements:
             spdlog::info("Command {}", type);
@@ -81,26 +81,26 @@ void Simulators::event_handler(json event)
         switch (e)
         {
         case Event::clicked: {
-            spdlog::debug("Event {}: {}", type, std::string(event.at("id")));
+            spdlog::debug("Event {}: {}", type, (size_t)event.at("id"));
-            invoke_active_simulator()->get_UI_item(std::string(event.at("id")))->click();
+            invoke_active_simulator()->get_UI_item(event.at("id"))->click();
             break;
         }
         case Event::value_changed: {
-            spdlog::debug("Event {}: {} {}", type, std::string(event.at("id")), (double)(event["value"]));
+            spdlog::debug("Event {}: {} {}", type, (size_t)event.at("id"), (double)(event["value"]));
-            invoke_active_simulator()->get_UI_item(std::string(event.at("id")))->set_value((double)event.at("value"));
+            invoke_active_simulator()->get_UI_item(event.at("id"))->set_value((double)event.at("value"));
             break;
         }
         case Event::text_changed: {
-            spdlog::debug("Event {}: {} {}", type, std::string(event.at("id")), std::string(event.at("text")));
+            spdlog::debug("Event {}: {} {}", type, (size_t)event.at("id"), std::string(event.at("text")));
             invoke_active_simulator()
-                ->get_UI_item(std::string(event.at("id")))
+                ->get_UI_item(event.at("id"))
                 ->set_text(std::string(event.at("text")));
             break;
         }
         case Event::selected: {
-            spdlog::debug("Event {}: {} {}", type, std::string(event.at("id")), std::string(event.at("selected")));
+            spdlog::debug("Event {}: {} {}", type, (size_t)event.at("id"), std::string(event.at("selected")));
             invoke_active_simulator()
-                ->get_UI_item(std::string(event.at("id")))
+                ->get_UI_item(event.at("id"))
                 ->set_selected(std::string(event.at("selected")));
             break;
         }

tools/simulator_base.cpp

@@ -4,6 +4,7 @@ Simulator_base::Simulator_base(std::string name, std::chrono::milliseconds inter
     : QObject(parrent), m_name(name), m_timer(new QTimer(this)), m_interval(interval)
 {
     connect(m_timer, &QTimer::timeout, this, [this] { timer(); });
+    m_UI_items.reserve(50);
 }
 
 std::string Simulator_base::name() const
@@ -12,29 +13,10 @@ std::string Simulator_base::name() const
     return m_name;
 }
 
-bool Simulator_base::is_ui_id_unique(std::string id) const
-{
-    // Check if the UI name is unique
-    for (UI_item *item : m_UI_items)
-    {
-        if (item->id() == id)
-        {
-            return false;
-        }
-    }
-
-    return true;
-}
-
 void Simulator_base::add_UI_item(UI_item *item)
 {
     // Add a UI item to the simulator
-    if (is_ui_id_unique(item->id()) == false)
-    {
-        throw std::runtime_error("UI item id " + item->id() + " is not unique");
-    }
     connect(item, &UI_item::value_changed, this, [this] { emit sim_changed(); });
-    m_UI_items_map[item->id()] = item;
     m_UI_items.push_back(item);
 }
 
@@ -43,18 +25,22 @@ json Simulator_base::get_UI_items() const
     // Get the UI items
     json items;
     items["name"] = m_name;
-    for (UI_item *item : m_UI_items)
+    for (size_t i = 0; i < m_UI_items.size(); i++)
     {
-        items["UI_items"].push_back(item->to_json());
+        items["UI_items"].push_back(m_UI_items[i]->to_json(i));
     }
 
     return items;
 }
 
-UI_item *Simulator_base::get_UI_item(std::string id) const
+UI_item *Simulator_base::get_UI_item(size_t id) const
 {
-    // Get a UI item by id
+    // Get a UI item by id using the list
-    return m_UI_items_map.at(id);
+    if (id < m_UI_items.size())
+    {
+        return m_UI_items[id];
+    }
+    return nullptr;
 }
 
 void Simulator_base::run()

tools/simulator_base.hpp

@@ -24,16 +24,6 @@ class Simulator_base : public QObject
      */
     std::string name() const;
 
-    /**
-     * @brief This function checks if the UI id is unique
-     *         (hence not already pushed in with the add_UI_item function)
-     *
-     * @param id The id to check
-     * @return true The id is unique
-     * @return false The id is already in use
-     */
-    bool is_ui_id_unique(std::string id) const;
-
     /**
      * @brief This function adds a UI item to the simulator
      *        only if the id is unique
@@ -55,7 +45,21 @@ class Simulator_base : public QObject
      * @param id The id of the UI item
      * @return UI_item* A pointer to the UI item object
      */
-    UI_item *get_UI_item(std::string id) const;
+    UI_item *get_UI_item(size_t id) const;
+
+    size_t ptr_to_id(UI_item *ptr) const
+    {
+        size_t id = 0;
+        while (id < m_UI_items.size())
+        {
+            if (m_UI_items[id] == ptr)
+            {
+                return id;
+            }
+            id++;
+        }
+        return (size_t)-1;
+    }
 
     /**
      * @brief Run the simulator
@@ -89,7 +93,6 @@ class Simulator_base : public QObject
   protected:
     std::string m_name;
     std::vector<UI_item *> m_UI_items;
-    std::map<std::string, UI_item *> m_UI_items_map;
     QTimer *m_timer;
     std::chrono::milliseconds m_interval;
 };

tools/simulators/test_sim.cpp

@@ -3,14 +3,14 @@
 
 Test_Sim::Test_Sim(QObject* parrent) :
 Simulator_base("Test_Sim", std::chrono::milliseconds(1000), parrent),
-m_button("button", "Off", Color(Color::White), Color(Color::Red)),
+m_button("Off", Color(Color::White), Color(Color::Red)),
-m_combobox("combobox", "Combobox", Color(Color::White), Color(Color::Black), {"Option 1", "Option 2", "Option 3"}, 0),
+m_combobox("Combobox", Color(Color::White), Color(Color::Black), {"Option 1", "Option 2", "Option 3"}, 0),
-m_label("label", "Label", Color(Color::White), Color(Color::Black)),
+m_label("Label", Color(Color::White), Color(Color::Black)),
-m_checkbox("checkbox", "Checkbox", Color(Color::White), Color(Color::Black), {"Option 1", "Option 2", "Option 3"}),
+m_checkbox("Checkbox", Color(Color::White), Color(Color::Black), {"Option 1", "Option 2", "Option 3"}),
-m_slider("slider", "Slider", Color(Color::White), Color(Color::Black), 0, 100, 0),
+m_slider("Slider", Color(Color::White), Color(Color::Black), 0, 100, 0),
-m_dial("dial", "Dial", Color(Color::White), Color(Color::Black), 0, 100, 0),
+m_dial("Dial", Color(Color::White), Color(Color::Black), 0, 100, 0),
-m_thermo("thermo", "Thermo", Color(Color::White), Color(Color::Black), 0, 100, 0),
+m_thermo("Thermo", Color(Color::White), Color(Color::Black), 0, 100, 0),
-m_led("led", "Led", Color(Color::White), Color(Color::Black), Color(Color::Red))
+m_led("Led", Color(Color::White), Color(Color::Black), Color(Color::Red))
 {
     this->m_thermo.set_start_color(Color(Color::Red));
     this->m_thermo.set_end_color(Color(Color::Red));
@@ -28,8 +28,8 @@ m_led("led", "Led", Color(Color::White), Color(Color::Black), Color(Color::Red))
     this->add_UI_item(&this->m_thermo);
     this->add_UI_item(&this->m_led);
 
-    QObject::connect(&m_button, &UI_button::on_click, [this](std::string id) { button_clicked(id); });
+    QObject::connect(&m_button, &UI_button::on_click, [this] { button_clicked(&m_button); });
-    QObject::connect(&m_slider, &UI_slider::on_change, [this](std::string id, double value) { slider_changed(id, value); });
+    QObject::connect(&m_slider, &UI_slider::on_change, [this](double value) { slider_changed(&m_slider, value); });
 }
 
 void Test_Sim::timer()
@@ -49,9 +49,9 @@ void Test_Sim::run_at_startup()
     spdlog::info("Test_Sim started");
 }
 
-void Test_Sim::button_clicked(std::string id)
+void Test_Sim::button_clicked(UI_button* id)
 {
-    if (id == "button")
+    if (id == &this->m_button)
     {
         bool state = this->m_button.bg_color() == Color(Color::Red) ? true : false;
         this->m_button.set_bg_color(state ? Color(Color::Green) : Color(Color::Red));
@@ -62,11 +62,11 @@ void Test_Sim::button_clicked(std::string id)
     }
 }
 
-void Test_Sim::slider_changed(std::string id, double value)
+void Test_Sim::slider_changed(UI_slider* id, double value)
 {
-    spdlog::info("Slider {} changed to {}", id, value);
+    if (id == &this->m_slider)
-    if (id == "slider")
     {
+        spdlog::info("Test slider changed to {}", value);
         this->m_label.set_text(std::to_string(value));
         this->m_dial.set_value(value);
         this->m_thermo.set_value(value);

tools/simulators/test_sim.hpp

@@ -8,9 +8,10 @@ class Test_Sim : public Simulator_base {
         void timer() override;
         void run_at_startup() override;
     private:
-        void button_clicked(std::string id);
+        void button_clicked(UI_button* id);
-        void slider_changed(std::string id, double value);
+        void slider_changed(UI_slider* id, double value);
-    private:
+
+      private:
         UI_button m_button;
         UI_combobox m_combobox;
         UI_label m_label;