You can now import materials from a project library

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

@@ -172,9 +172,10 @@ class RefreshLibrary(bpy.types.Operator):
         self.props.active_library_element = ""
 
         types = IfcStore.library_file.wrapped_data.types_with_super()
-        if "IfcTypeProduct" in types:
+        for importable_type in ["IfcTypeProduct", "IfcMaterial"]:
-            new = self.props.library_elements.add()
+            if importable_type in types:
-            new.name = "IfcTypeProduct"
+                new = self.props.library_elements.add()
+                new.name = importable_type
         return {"FINISHED"}
 
 
@@ -201,7 +202,9 @@ class ChangeLibraryElement(bpy.types.Operator):
                 new.ifc_definition_id = element.id()
                 if IfcStore.library_file.schema == "IFC2X3" or not IfcStore.library_file.by_type("IfcProjectLibrary"):
                     new.is_declared = False
-                elif element.HasContext and element.HasContext[0].RelatingContext.is_a("IfcProjectLibrary"):
+                elif getattr(element, "HasContext", None) and element.HasContext[0].RelatingContext.is_a(
+                    "IfcProjectLibrary"
+                ):
                     new.is_declared = True
         else:
             for ifc_class in ifc_classes:
@@ -328,10 +331,22 @@ class AppendLibraryElement(bpy.types.Operator):
         )
         if not element:
             return {"FINISHED"}
-        self.import_type_from_ifc(element, context)
+        if element.is_a("IfcTypeProduct"):
+            self.import_type_from_ifc(element, context)
+        elif element.is_a("IfcMaterial"):
+            self.import_material_from_ifc(element, context)
         blenderbim.bim.handler.purge_module_data()
         return {"FINISHED"}
 
+    def import_material_from_ifc(self, element, context):
+        self.file = IfcStore.get_file()
+        logger = logging.getLogger("ImportIFC")
+        ifc_import_settings = import_ifc.IfcImportSettings.factory(context, IfcStore.path, logger)
+        ifc_importer = import_ifc.IfcImporter(ifc_import_settings)
+        ifc_importer.file = self.file
+        blender_material = ifc_importer.create_material(element)
+        self.import_material_styles(blender_material, element, ifc_importer)
+
     def import_type_from_ifc(self, element, context):
         self.file = IfcStore.get_file()
         logger = logging.getLogger("ImportIFC")

src/ifcopenshell-python/ifcopenshell/api/project/append_asset.py

@@ -18,6 +18,13 @@ class Usecase:
             except:
                 pass
             return self.append_type_product()
+        elif self.settings["element"].is_a("IfcMaterial"):
+            if [e for e in self.file.by_type("IfcMaterial") if e.Name == self.settings["element"].Name]:
+                return
+            return self.append_material()
+
+    def append_material(self):
+        return self.file.add(self.settings["element"])
 
     def append_type_product(self):
         self.whitelisted_inverse_attributes = {

src/ifcopenshell-python/ifcopenshell/api/project/assign_declaration.py

@@ -17,6 +17,9 @@ class Usecase:
         if self.settings["relating_context"].Declares:
             declares = self.settings["relating_context"].Declares[0]
 
+        if not hasattr(self.settings["definition"], "HasContext"):
+            return
+
         has_context = None
         if self.settings["definition"].HasContext:
             has_context = self.settings["definition"].HasContext[0]