Network: Some minor change.

src/View/Network/GraphWidget.py

@@ -422,6 +422,17 @@ class GraphWidget(QGraphicsView):
             if type(i) == NodeItem:
                 self.texts[i].rename()
 
+    def enable_edge(self, edge, prev):
+        edge.edge.enable(enable = not prev)
+        self.changeEdge.emit(self.sender())
+        self.changeNode.emit(self.sender())
+        self.display_update()
+
+    def reverse_edge(self, edge):
+        edge.edge.reverse()
+        self.changeEdge.emit(self.sender())
+        self.display_update()
+
     def display_update(self):
         """Clear the scene and redraw it
 
@@ -633,6 +644,11 @@ class GraphWidget(QGraphicsView):
         pos = self.mapToScene(event.pos())
         self.clicked = True
 
+        if event.buttons() & Qt.RightButton:
+            self.update()
+            super(GraphWidget, self).mousePressEvent(event)
+            return
+
         # Move item and select edge item
         if self._state == "move":
             self._selected_new_edge_src_node = None
@@ -753,12 +769,23 @@ class GraphWidget(QGraphicsView):
 
     def _menu_edge(self, event, pos, items, menu):
         delete = menu.addAction(_translate("Network", "Delete the reach"))
-        disable = menu.addAction(_translate("Network", "Disable the reach"))
+        if self.graph.is_enable_edge(items[0].edge):
+            enable = menu.addAction(_translate("Network", "Disable the reach"))
+            is_enable = True
+        else:
+            enable = menu.addAction(_translate("Network", "Enable the reach"))
+            is_enable = False
+
+        reverse = menu.addAction(_translate("Network", "Reverse the reach orientation"))
 
         action = menu.exec_(self.mapToGlobal(event.pos()))
 
         if action == delete:
             self.del_edge(items[0])
+        elif action == enable:
+            self.enable_edge(items[0], is_enable)
+        elif action == reverse:
+            self.reverse_edge(items[0])
 
     def contextMenuEvent(self, event):
         pos = self.mapToScene(event.pos())