pygui: clear throughput labels when disabling throughput

daemon/core/gui/coreclient.py

@@ -221,6 +221,7 @@ class CoreClient:
         if self.handling_throughputs:
             self.handling_throughputs.cancel()
             self.handling_throughputs = None
+            self.app.canvas.clear_throughputs()
 
     def cancel_events(self) -> None:
         if self.handling_events:

daemon/core/gui/graph/edges.py

@@ -145,6 +145,10 @@ class Edge:
         else:
             self.canvas.itemconfig(self.middle_label, text=text)
 
+    def clear_middle_label(self) -> None:
+        self.canvas.delete(self.middle_label)
+        self.middle_label = None
+
     def node_label_positions(self) -> Tuple[Tuple[float, float], Tuple[float, float]]:
         src_x, src_y, _, _, dst_x, dst_y = self.canvas.coords(self.id)
         v1 = dst_x - src_x
@@ -216,11 +220,10 @@ class Edge:
         logging.debug("deleting canvas edge, id: %s", self.id)
         self.canvas.delete(self.id)
         self.canvas.delete(self.src_label)
-        self.canvas.delete(self.middle_label)
         self.canvas.delete(self.dst_label)
+        self.clear_middle_label()
         self.id = None
         self.src_label = None
-        self.middle_label = None
         self.dst_label = None
 
 

daemon/core/gui/graph/graph.py

@@ -997,6 +997,10 @@ class CanvasGraph(tk.Canvas):
             )
         self.tag_raise(tags.NODE)
 
+    def clear_throughputs(self) -> None:
+        for edge in self.edges.values():
+            edge.clear_middle_label()
+
     def scale_graph(self) -> None:
         for nid, canvas_node in self.nodes.items():
             img = None