bugs fixed

gui/canvas.py

@@ -213,6 +213,7 @@ class NetworkCanvas(tk.Canvas):
 
             new_components = []
             for c_type, pos, prop, nodes in data["components"]:
+                c_type = eval("gui.network_components." + c_type)
                 new_component = self.add_component(c_type, pos[0], pos[1])
                 new_components.append([nodes, new_component])
                 for p, v in prop.items():
@@ -237,9 +238,9 @@ class NetworkCanvas(tk.Canvas):
     def save_project(self, filename):
         with open(filename, "wb") as f:
             data = {
-                "components": [(type(c), c.get_pos(), c.component.properties, c.component.get_nodes())
+                "components": [(str(c.__class__.__name__), c.get_pos(), c.component.properties, c.component.get_nodes())
                                for c in self.canvas_components if not isinstance(c, Edge)],
-                "edges": self.component_graph.get_edges()
+                "edges": list(self.component_graph.get_edges())
             }
             if self.background:
                 data["background"] = {"image": self.background.image_origin, "size": self.background.base_size}

model/component.py

@@ -139,7 +139,12 @@ class Component:
         return self.properties
 
     def set_property(self, property, value):
-        self.properties[property] = value
+        if isinstance(self.properties[property], flow_graph.Variable) and (isinstance(value, int) or isinstance(value, float)):
+            self.properties[property].set_value(value)
+        elif isinstance(self.properties[property], flow_graph.Variable) and isinstance(value, flow_graph.Variable):
+            self.properties[property].set_value(value.get_value())
+        else:
+            self.properties[property] = value
 
     def get_type(self):
         return self.__class__.__name__