pamhyr: Add saved status in model.

src/Model/Network/Graph.py

@@ -6,9 +6,11 @@ from Model.Network.Node import Node
 from Model.Network.Edge import Edge
 
 class Graph(object):
-    def __init__(self):
+    def __init__(self, status = None):
         super(Graph, self).__init__()
 
+        self._status = status
+
         self._node_ctor = Node
         self._edge_ctor = Edge
 
@@ -82,13 +84,16 @@ class Graph(object):
     def _add_node(self, node):
         self._nodes.append(node)
         self._nodes_ids += 1
+
+        self._status.modified()
         return node
 
     def add_node(self, x:float = 0.0, y:float = 0.0):
         node = self._node_ctor(
             self._nodes_ids,
             f"Node {self._nodes_ids}",
-            x = x, y = y
+            x = x, y = y,
+            status = self._status
         )
         return self._add_node(node)
 
@@ -101,10 +106,14 @@ class Graph(object):
 
         self._edges.append(edge)
         self._edges_ids += 1
+
+        self._status.modified()
         return edge
 
     def add_edge(self, n1:Node, n2:Node):
-        edge = self._edge_ctor(self._edges_ids, "", n1, n2)
+        edge = self._edge_ctor(self._edges_ids,
+                               "", n1, n2,
+                               status = self._status)
         return self._add_edge(edge)
 
     def remove_node(self, node_name:str):
@@ -114,6 +123,7 @@ class Graph(object):
                 self._nodes
             )
         )
+        self._status.modified()
 
     def remove_edge(self, edge_name:str):
         self._edges = list(
@@ -122,6 +132,7 @@ class Graph(object):
                 self._edges
             )
         )
+        self._status.modified()
 
     def is_upstream_node(self, node):
         return reduce(