GUI: Improve object deletion UX when no object exists

Author: deajan

npbackup/gui/config.py

@@ -199,7 +199,10 @@ def create_object(full_config: dict) -> dict:
 
     def delete_object(full_config: dict, full_object_name: str) -> dict:
         object_type, object_name = get_object_from_combo(full_object_name)
-        result = sg.PopupYesNo(
+        if not object_type and not object_name:
+            sg.popup_error(_t("config_gui.no_object_to_delete"), keep_on_top=True)
+            return full_config
+        result = sg.popup_yes_no(
             _t("config_gui.are_you_sure_to_delete") + f" {object_type} {object_name} ?"
         )
         if result == "Yes":

npbackup/translations/config_gui.en.yml

@@ -136,6 +136,7 @@ en:
   add_object: Add another repo or group
   delete_object: Delete selected repo or group
   are_you_sure_to_delete: Are you sure you want to delete
+  no_object_to_delete: No object to delete
   repo_already_exists: Repo already exists
   group_already_exists: Group already exists
   cannot_remove_group_inherited_settings: Cannot remove group inherited settings. Please remove directly in group configuration

npbackup/translations/config_gui.fr.yml

@@ -137,6 +137,7 @@ fr:
   add_object: Ajouter un autre dépot ou groupe
   delete_object: Supprimer le dépot ou groupe actuel
   are_you_sure_to_delete: Êtes-vous sûr de vouloir supprimer le
+  no_object_to_delete: Aucun objet à supprimer
   repo_already_exists: Dépot déjà existant
   group_already_exists: Groupe déjà existant
   cannot_remove_group_inherited_settings: Impossible de supprimer une option héritée de groupe. Veuillez supprimer l'option directement dans la configuration de groupe