From 6dfeadf1935c0afaa2cd8e7c78b18d38e5866e68 Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Fri, 8 Dec 2023 18:38:09 +0500
Subject: [PATCH] Fixed issues with linked elements from linked blend files
 #4081

In #4081 reported the case when during redo (changing param in operator's popup) `Ifc.rebuild_element_maps` was relinking elements without discarding possible linked blender libraries. It end up accidentally linking some library's objects to the current Ifc file leading to errors.

Also fixed possible similar issue in couple other places.
---
 src/blenderbim/blenderbim/bim/ifc.py      | 4 ++++
 src/blenderbim/blenderbim/bim/operator.py | 4 ++++
 src/blenderbim/blenderbim/tool/ifc.py     | 6 ++++++
 3 files changed, 14 insertions(+)

diff --git a/src/blenderbim/blenderbim/bim/ifc.py b/src/blenderbim/blenderbim/bim/ifc.py
index 312527beb4..8d31281804 100644
--- a/src/blenderbim/blenderbim/bim/ifc.py
+++ b/src/blenderbim/blenderbim/bim/ifc.py
@@ -163,8 +163,12 @@ class IfcStore:
         if not IfcStore.get_file():
             return
         for obj in bpy.data.objects:
+            if obj.library:
+                continue
             IfcStore.relink_object(obj)
         for obj in bpy.data.materials:
+            if obj.library:
+                continue
             IfcStore.relink_object(obj)
 
     @staticmethod
diff --git a/src/blenderbim/blenderbim/bim/operator.py b/src/blenderbim/blenderbim/bim/operator.py
index 42739c680e..69f46e5f34 100644
--- a/src/blenderbim/blenderbim/bim/operator.py
+++ b/src/blenderbim/blenderbim/bim/operator.py
@@ -670,6 +670,8 @@ class ReloadIfcFile(bpy.types.Operator, tool.Ifc.Operator):
         # STEP IDs may change, but we assume the GlobalID to be constant
         obj_map = {}
         for obj in bpy.data.objects:
+            if obj.library:
+                continue
             element = tool.Ifc.get_entity(obj)
             if element and hasattr(element, "GlobalId"):
                 obj_map[obj.name] = element.GlobalId
@@ -678,6 +680,8 @@ class ReloadIfcFile(bpy.types.Operator, tool.Ifc.Operator):
         tool.Ifc.set(new)
 
         for obj in bpy.data.objects:
+            if obj.library:
+                continue
             global_id = obj_map.get(obj.name)
             if global_id:
                 try:
diff --git a/src/blenderbim/blenderbim/tool/ifc.py b/src/blenderbim/blenderbim/tool/ifc.py
index a655b5ce1a..d17c819894 100644
--- a/src/blenderbim/blenderbim/tool/ifc.py
+++ b/src/blenderbim/blenderbim/tool/ifc.py
@@ -118,6 +118,9 @@ class Ifc(blenderbim.core.tool.Ifc):
             return
 
         for obj in bpy.data.objects:
+            if obj.library:
+                continue
+
             bpy.msgbus.clear_by_owner(obj)
 
             element = cls.get_entity(obj)
@@ -134,6 +137,9 @@ class Ifc(blenderbim.core.tool.Ifc):
             )
 
         for obj in bpy.data.materials:
+            if obj.library:
+                continue
+
             bpy.msgbus.clear_by_owner(obj)
 
             material = cls.get_entity(obj)