Custom User Menus confirm and hide when printing

Marlin/Configuration_adv.h

@@ -3406,6 +3406,8 @@
   #define CUSTOM_USER_MENUS
 #endif
 #if ENABLED(CUSTOM_USER_MENUS)
+  #define CUSTOM_MENU_ONLY_IDLE // Only show custom menu when idle
+  #define CUSTOM_USER_MENU_CONFIRM // Show confirmation dialog on user menu actions
   #define CUSTOM_USER_MENU_TITLE "Tool Heads"
   #define USER_SCRIPT_DONE "M117 Tool Changed"
   #define USER_SCRIPT_AUDIBLE_FEEDBACK

Marlin/src/lcd/menu/menu_custom.cpp

@@ -47,7 +47,20 @@ void menu_user() {
   START_MENU();
   BACK_ITEM(MSG_MAIN);
   #define HAS_USER_ITEM(N) (defined(USER_DESC_##N) && defined(USER_GCODE_##N))
-  #define USER_ITEM(N) ACTION_ITEM_P(PSTR(USER_DESC_##N), []{ _lcd_user_gcode(PSTR(USER_GCODE_##N _DONE_SCRIPT)); });
+  #if ENABLED(CUSTOM_USER_MENU_CONFIRM)
+    #define USER_ITEM(N) SUBMENU_P(PSTR(USER_DESC_##N), []{ MenuItem_confirm::confirm_screen( \
+    []{ \
+      _lcd_user_gcode(PSTR(USER_GCODE_##N _DONE_SCRIPT)); \
+      ui.goto_previous_screen(); \
+    }, \
+    ui.goto_previous_screen, \
+    PSTR(USER_DESC_##N "?")   \
+  ); });
+
+  
+  #else
+    #define USER_ITEM(N) ACTION_ITEM_P(PSTR(USER_DESC_##N), []{ _lcd_user_gcode(PSTR(USER_GCODE_##N _DONE_SCRIPT)); });
+  #endif
   #if HAS_USER_ITEM(1)
     USER_ITEM(1);
   #endif

Marlin/src/lcd/menu/menu_main.cpp

@@ -202,7 +202,10 @@ void menu_main() {
 
   #if ENABLED(CUSTOM_USER_MENUS)
     #ifdef CUSTOM_USER_MENU_TITLE
-      SUBMENU_P(PSTR(CUSTOM_USER_MENU_TITLE), menu_user);
+      #if ENABLED(CUSTOM_MENU_ONLY_IDLE)
+        if(!busy)
+      #endif
+        SUBMENU_P(PSTR(CUSTOM_USER_MENU_TITLE), menu_user);
     #else
       SUBMENU(MSG_USER_MENU, menu_user);
     #endif