Network: Fix edge delete whene there are multiple edge between two node.

src/View/Network/GraphWidget.py

@@ -457,9 +457,13 @@ class GraphWidget(QGraphicsView):
         self.m_origin_y = 0.0
         self.clicked = False
 
+        self.setup_scene(min_size, max_size, size)
+
+    def setup_scene(self, min_size, max_size, size):
         scene = QGraphicsScene(self)
         scene.setItemIndexMethod(QGraphicsScene.NoIndex)
         scene.setSceneRect(0, 0, 2000, 2000)
+
         self.setScene(scene)
         self.setCacheMode(QGraphicsView.CacheBackground)
         self.setViewportUpdateMode(QGraphicsView.BoundingRectViewportUpdate)

src/View/Network/UndoCommand.py

@@ -40,7 +40,7 @@ class AddNodeCommand(QUndoCommand):
         self._node = node
 
     def undo(self):
-        self._graph.remove_node(self._node.name)
+        self._graph.remove_node(self._node)
 
     def redo(self):
         self._graph.insert_node(self._node)
@@ -85,9 +85,9 @@ class DelNodeCommand(QUndoCommand):
         )
 
         for edge in self._edges:
-            self._graph.remove_edge(edge.name)
+            self._graph.remove_edge(edge)
 
-        self._graph.remove_node(self._node.name)
+        self._graph.remove_node(self._node)
 
 
 class AddEdgeCommand(QUndoCommand):
@@ -98,7 +98,7 @@ class AddEdgeCommand(QUndoCommand):
         self._edge = edge
 
     def undo(self):
-        self._graph.remove_edge(self._edge.name)
+        self._graph.remove_edge(self._edge)
 
     def redo(self):
         self._graph.insert_edge(self._edge)
@@ -115,7 +115,7 @@ class DelEdgeCommand(QUndoCommand):
         self._graph.insert_edge(self._edge)
 
     def redo(self):
-        self._graph.remove_edge(self._edge.name)
+        self._graph.remove_edge(self._edge)
 
 
 class SetCommand(QUndoCommand):