Ask confirmation from the user when deleting a category

src/ui/budget_view.py

@@ -60,7 +60,7 @@ def select_item(a):
             transaction_id = transactions[i][0]
             datetime_object = datetime.strptime(transactions[i][1], "%Y-%m-%d")
             date = datetime.strftime(datetime_object, "%-d.%-m.%Y")
-            amount = f"{('%.2f' % (transactions[i][2] / 100)).replace('.', ',')} €"
+            amount = f"{('%.2f' % (transactions[i][2] / 100)).replace('.', ',').replace('-', '−')} €"
             category = transactions[i][3]
             description = transactions[i][4]
             transaction_list.insert(parent="", index="end", iid=i, text="", values=(transaction_id, date, amount, category, description))

src/ui/category_view.py

@@ -1,5 +1,3 @@
-from datetime import datetime
-
 import tkinter as tk
 from tkinter import ttk, messagebox
 
@@ -54,8 +52,10 @@ def select_item(a):
         def delete():
             selected_item = category_list.selection()[0] if category_list.selection() else None
             if selected_item:
-                budget_service.delete_category(self._selected_category_id)
-                category_list.delete(selected_item)
+                answer = messagebox.askyesno(message="Haluatko varmasti poistaa kategorian?", icon="warning")
+                if answer:
+                    budget_service.delete_category(self._selected_category_id)
+                    category_list.delete(selected_item)
             else:
                 messagebox.showerror(message="Valitse kategoria!")