fix some bug

Author: ArnoChenFx

NodeGraphQt/base/node.py

@@ -184,6 +184,9 @@ def set_name(self, name=''):
         Args:
             name (str): name for the node.
         """
+        if self._graph is not None and not self._graph.editable:
+            self.view.name = self.model.name
+            return
         self.set_property('name', name)
 
     def color(self):

NodeGraphQt/base/utils.py

@@ -292,6 +292,7 @@ def _bg_grid_lines(graph):
 
 
 def __layout_graph(graph, down_stream=True):
+    graph.begin_undo('Auto Layout')
     node_space = graph.get_node_space()
     if node_space is not None:
         nodes = node_space.children()
@@ -309,6 +310,7 @@ def __layout_graph(graph, down_stream=True):
     dx = nodes_center0[0] - nodes_center1[0]
     dy = nodes_center0[1] - nodes_center1[1]
     [n.set_pos(n.x_pos() + dx, n.y_pos()+dy) for n in nodes]
+    graph.end_undo()
 
 
 def _layout_graph_down(graph):

example_auto_nodes/data_node.py

@@ -30,6 +30,7 @@ def run(self):
         value = self.getInputData(0)
         if type(value) is not list:
             self.error("Input data not list")
+            return
         for index, data in enumerate(value):
             if index > 3:
                 return