Fixed toast message exception

docs/source/changelog.rst

@@ -50,7 +50,8 @@ v4.1.0
   information.
 - Fixed SQL log removal through the GUI.
 - Fixed CSV and JSON reading through remote.
-- Disabled the :ref:`Automatic guild discovery and join` features due to the search provider shutting down its
+- Fixed exception when GUI tried to print a message.
+- |BREAK_CH| Disabled the :ref:`Automatic guild discovery and join` features due to the search provider shutting down its
   services. It will be reenabled in a future version.
 
 

src/daf/message/messageperiod.py

@@ -300,7 +300,7 @@ class NamedDayOfYearPeriod(EveryXPeriod):
     ----------
     .. code-block:: python
 
-        #  Every second monday of December at 12:00.
+        #  Every second Monday of December at 12:00.
          NamedDayOfYearPeriod(
             time=time(hour=12),  # Time
             day="Mon",  # Day (Monday)
@@ -377,8 +377,6 @@ class NamedDayOfMonthPeriod(EveryXPeriod):
         The day of week when to send.
     week: int
         The week number of which to send. E.g., 1 for 1st week, 2 for second week.
-    month: 1 - 12
-        The month in which to send.
     next_send_time: datetime | timedelta
         Represents the time at which the message should first be sent.
         Use ``datetime`` to specify the exact date and time at which the message should start being sent.
@@ -389,12 +387,11 @@ class NamedDayOfMonthPeriod(EveryXPeriod):
     ----------
     .. code-block:: python
 
-        #  Every second monday of December at 12:00.
-         NamedDayOfYearPeriod(
+        #  Second Monday of every month at 12:00.
+         NamedDayOfMonthPeriod(
             time=time(hour=12),  # Time
             day="Mon",  # Day (Monday)
             week=2,  # Which week (second monday)
-            month=12  # Month (December)
         )
     """
     DAYS = Literal["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]

src/daf_gui/main.py

@@ -149,9 +149,17 @@ def init_event_listeners(self):
         }
         dpi_78, dpi_600 = dpi_scaled(78), dpi_scaled(600)
 
+        last_toast: ToastNotification = None
         def trace_listener(level: daf.TraceLEVELS, message: str):
-            last_toast: ToastNotification = ToastNotification.last_toast
-            if last_toast is not None and last_toast.toplevel.winfo_exists():
+            nonlocal last_toast
+
+            if last_toast is None:
+                next_position = dpi_78
+            elif last_toast.toplevel is None or last_toast.toplevel.winfo_exists():
+                # If toplevel is None, that means that tkinter re-entered the its event loop in the
+                # toast.show_toast() call before that same function was able to set the toplevel attribute.
+                # This happens due to ttkbootstrap library providing the 'alpha' parameter to Tkinter's TopLevel class,
+                # which causes Tkinter to re-enter its event loop and process another after_idle(trace_listener, ...) command.
                 next_position = max((last_toast.position[1] + dpi_78) % dpi_600, dpi_78)
             else:
                 next_position = dpi_78
@@ -165,10 +173,9 @@ def trace_listener(level: daf.TraceLEVELS, message: str):
                 position=(10, next_position, "se"),
                 topmost=True
             )
-            ToastNotification.last_toast = toast
+            last_toast = toast
             toast.show_toast()
 
-        ToastNotification.last_toast = None
         evt = daf.get_global_event_ctrl()
         evt.add_listener(
             daf.EventID.g_trace, lambda level, message: self.win_main.after_idle(trace_listener, level, message)