fix console errors adding new style and changing it's color

1) As adding new styles means it's not assigned anywhere, there is no need to keep graph up to date.
2) Removed Ifc Operator super class from couple operators that do not write ifc data
3) Moved common code to tool.Style

src/blenderbim/blenderbim/bim/module/style/operator.py

@@ -535,22 +535,22 @@ class RemoveTextureMap(bpy.types.Operator):
         return {"FINISHED"}
 
 
-class EnableAddingPresentationStyle(bpy.types.Operator, tool.Ifc.Operator):
+class EnableAddingPresentationStyle(bpy.types.Operator):
     bl_idname = "bim.enable_adding_presentation_style"
     bl_label = "Enable Add Presentation Style"
     bl_options = {"REGISTER", "UNDO"}
 
     @classmethod
     def poll(cls, context):
-        style_type = bpy.context.scene.BIMStylesProperties.style_type
+        style_type = tool.Style.get_active_style_type()
         if style_type != "IfcSurfaceStyle":
             cls.poll_message_set(f"Adding {style_type} is not currently supported.")
             return False
         return True
 
-    def _execute(self, context):
+    def execute(self, context):
-        props = bpy.context.scene.BIMStylesProperties
+        tool.Style.enable_adding_presentation_style()
-        props.is_adding = True
+        return {"FINISHED"}
 
 
 class DuplicateStyle(bpy.types.Operator, tool.Ifc.Operator):
@@ -569,14 +569,14 @@ class DuplicateStyle(bpy.types.Operator, tool.Ifc.Operator):
         bpy.ops.bim.load_styles(style_type=style_type)
 
 
-class DisableAddingPresentationStyle(bpy.types.Operator, tool.Ifc.Operator):
+class DisableAddingPresentationStyle(bpy.types.Operator):
     bl_idname = "bim.disable_adding_presentation_style"
     bl_label = "Disable Add Presentation Style"
     bl_options = {"REGISTER", "UNDO"}
 
-    def _execute(self, context):
+    def execute(self, context):
-        props = bpy.context.scene.BIMStylesProperties
+        tool.Style.disable_adding_presentation_style()
-        props.is_adding = False
+        return {"FINISHED"}
 
 
 class AddPresentationStyle(bpy.types.Operator, tool.Ifc.Operator):
@@ -629,7 +629,7 @@ class AddPresentationStyle(bpy.types.Operator, tool.Ifc.Operator):
         else:
             self.report({"INFO"}, f"Adding style of type {props.style_type} is not yet supported.")
 
-        props.is_adding = False
+        tool.Style.disable_adding_presentation_style()
         core.load_styles(tool.Style, style_type=props.style_type)
 
 

src/blenderbim/blenderbim/tool/style.py

@@ -55,6 +55,18 @@ class Style(blenderbim.core.tool.Style):
     def delete_object(cls, obj: bpy.types.Material) -> None:
         tool.Blender.remove_data_block(obj)
 
+    @classmethod
+    def enable_adding_presentation_style(cls) -> None:
+        props = bpy.context.scene.BIMStylesProperties
+        props.is_adding = True
+        props.update_graph = False
+
+    @classmethod
+    def disable_adding_presentation_style(cls) -> None:
+        props = bpy.context.scene.BIMStylesProperties
+        props.is_adding = False
+        props.update_graph = True
+
     @classmethod
     def disable_editing(cls) -> None:
         bpy.context.scene.BIMStylesProperties.is_editing_style = 0