Fix #2898. Explicitly check for changed active material in material UI panels.

src/blenderbim/blenderbim/bim/module/attribute/data.py

@@ -59,9 +59,13 @@ class MaterialAttributesData:
 
     @classmethod
     def load(cls):
-        cls.data = {"attributes": cls.attributes()}
+        cls.data = {"ifc_definition_id": cls.ifc_definition_id(), "attributes": cls.attributes()}
         cls.is_loaded = True
 
+    @classmethod
+    def ifc_definition_id(cls):
+        return bpy.context.active_object.active_material.BIMObjectProperties.ifc_definition_id
+
     @classmethod
     def attributes(cls):
         results = []

src/blenderbim/blenderbim/bim/module/attribute/ui.py

@@ -94,4 +94,10 @@ class BIM_PT_material_attributes(Panel):
     def draw(self, context):
         if not MaterialAttributesData.is_loaded:
             MaterialAttributesData.load()
+        elif (
+            context.active_object.active_material.BIMObjectProperties.ifc_definition_id
+            != MaterialAttributesData.data["ifc_definition_id"]
+        ):
+            MaterialAttributesData.load()
+
         draw_ui(context, self.layout, "Material", MaterialAttributesData.data["attributes"])

src/blenderbim/blenderbim/bim/module/pset/data.py

@@ -96,7 +96,10 @@ class MaterialPsetsData(Data):
 
     @classmethod
     def load(cls):
-        cls.data = {"psets": cls.psetqtos(tool.Ifc.get_entity(bpy.context.active_object.active_material))}
+        cls.data = {
+            "ifc_definition_id": bpy.context.active_object.active_material.BIMObjectProperties.ifc_definition_id,
+            "psets": cls.psetqtos(tool.Ifc.get_entity(bpy.context.active_object.active_material)),
+        }
         cls.is_loaded = True
 
 

src/blenderbim/blenderbim/bim/module/pset/ui.py

@@ -268,6 +268,11 @@ class BIM_PT_material_psets(Panel):
     def draw(self, context):
         if not MaterialPsetsData.is_loaded:
             MaterialPsetsData.load()
+        elif (
+            context.active_object.active_material.BIMObjectProperties.ifc_definition_id
+            != MaterialPsetsData.data["ifc_definition_id"]
+        ):
+            MaterialPsetsData.load()
 
         props = context.active_object.active_material.PsetProperties
         row = self.layout.row(align=True)

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

@@ -56,9 +56,13 @@ class StyleAttributesData:
 
     @classmethod
     def load(cls):
-        cls.data = {"attributes": cls.get_attributes()}
+        cls.data = {"ifc_style_id": cls.ifc_style_id(), "attributes": cls.get_attributes()}
         cls.is_loaded = True
 
+    @classmethod
+    def ifc_style_id(cls):
+        return bpy.context.active_object.active_material.BIMMaterialProperties.ifc_style_id
+
     @classmethod
     def get_attributes(cls):
         style = tool.Ifc.get().by_id(bpy.context.active_object.active_material.BIMMaterialProperties.ifc_style_id)

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

@@ -115,6 +115,11 @@ class BIM_PT_style_attributes(Panel):
     def draw(self, context):
         if not StyleAttributesData.is_loaded:
             StyleAttributesData.load()
+        elif (
+            context.active_object.active_material.BIMMaterialProperties.ifc_style_id
+            != StyleAttributesData.data["ifc_style_id"]
+        ):
+            StyleAttributesData.load()
 
         obj = context.active_object.active_material
         mprops = obj.BIMMaterialProperties