Design main window: Network graph is now connected with the edition window to refresh after every change

src/View/MainWindow.py

@@ -1306,6 +1306,9 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
                 return
 
             self.network = NetworkWindow(study=self._study, parent=self)
+            self.network.networkChanged.connect(
+                self._tab_widget_graph.update, Qt.QueuedConnection
+            )
             self.network.show()
 
     def open_scenarios(self):

src/View/MainWindowTabGraph.py

@@ -74,6 +74,8 @@ class WidgetGraph(QWidget):
                 trad=self._trad,
             )
             self._graph_layout.addWidget(self._graph_widget)
+        elif self._graph_widget is not None:
+            self._graph_widget.display_update()
 
         data = None
         geotiff = None

src/View/Network/GraphWidget.py

@@ -667,6 +667,13 @@ class GraphWidget(QGraphicsView):
         Returns:
             Nothing
         """
+        # Scene items are destroyed by clear(); do not retain hover/selection
+        # references to them when refreshing another view of the same graph.
+        self._selected_item = None
+        self._selected_new_edge_src_node = None
+        self._current_edge = None
+        self._current_moved_node = None
+        self.tmp_line = None
         self.scene().clear()
         self.create_items()
 

src/View/Network/Window.py

@@ -58,6 +58,8 @@ _translate = QCoreApplication.translate
 
 
 class NetworkWindow(PamhyrWindow):
+    networkChanged = pyqtSignal()
+
     _pamhyr_ui = "Network"
     _pamhyr_name = "River network"
 
@@ -140,6 +142,7 @@ class NetworkWindow(PamhyrWindow):
         self._graph_layout.addWidget(self._graph_widget)
 
     def setup_connections(self):
+        self._undo_stack.indexChanged.connect(self.networkChanged)
         self._nodes_model.dataChanged.connect(self.update)
         self._reachs_model.dataChanged.connect(
             self._graph_widget.display_update)