WIP psets now use partial editing with new features! See full message. See #1222.

* Psets are now sensitive to data type
 * Psets now support null vs empty
 * Psets now respect shared STEP IDs

src/ifcblenderexport/blenderbim/bim/__init__.py

@@ -14,6 +14,7 @@ if bpy is not None:
     import blenderbim.bim.module.geometry as module_geometry
     import blenderbim.bim.module.model as module_model
     import blenderbim.bim.module.project as module_project
+    import blenderbim.bim.module.pset as module_pset
     import blenderbim.bim.module.spatial as module_spatial
     import blenderbim.bim.module.style as module_style
     import blenderbim.bim.module.type as module_type
@@ -52,8 +53,6 @@ if bpy is not None:
         operator.SelectSweptSolidInnerCurves,
         operator.AssignSweptSolidExtrusion,
         operator.SelectSweptSolidExtrusion,
-        operator.AddPset,
-        operator.RemovePset,
         operator.AddQto,
         operator.RemoveQto,
         operator.AddMaterialPset,
@@ -286,7 +285,6 @@ if bpy is not None:
         ui.BIM_PT_material,
         ui.BIM_PT_presentation_layer_data,
         ui.BIM_PT_object_material,
-        ui.BIM_PT_object_psets,
         ui.BIM_PT_object_qto,
         ui.BIM_PT_classification_references,
         ui.BIM_PT_documents,
@@ -320,6 +318,7 @@ if bpy is not None:
     classes.extend(module_geometry.classes)
     classes.extend(module_model.classes)
     classes.extend(module_project.classes)
+    classes.extend(module_pset.classes)
     classes.extend(module_spatial.classes)
     classes.extend(module_style.classes)
     classes.extend(module_type.classes)
@@ -364,6 +363,7 @@ if bpy is not None:
         module_geometry.register()
         module_model.register()
         module_project.register()
+        module_pset.register()
         module_spatial.register()
         module_style.register()
         module_type.register()
@@ -393,6 +393,7 @@ if bpy is not None:
         module_type.unregister()
         module_style.unregister()
         module_spatial.unregister()
+        module_pset.unregister()
         module_project.unregister()
         module_model.unregister()
         module_geometry.unregister()

src/ifcblenderexport/blenderbim/bim/import_ifc.py

@@ -849,7 +849,6 @@ class IfcImporter:
         self.material_creator.create(element, obj, mesh)
         self.add_element_classifications(element, obj)
         self.add_element_document_relations(element, obj)
-        self.add_type_product_psets(element, obj)
         self.type_collection.objects.link(obj)
         self.type_products[element.GlobalId] = obj
 
@@ -1364,18 +1363,9 @@ class IfcImporter:
         for definition in element.IsDefinedBy:
             if not definition.is_a("IfcRelDefinesByProperties"):
                 continue
-            if definition.RelatingPropertyDefinition.is_a("IfcPropertySet"):
+            if definition.RelatingPropertyDefinition.is_a("IfcElementQuantity"):
-                self.add_pset(definition.RelatingPropertyDefinition, obj.BIMObjectProperties)
-            elif definition.RelatingPropertyDefinition.is_a("IfcElementQuantity"):
                 self.add_qto(definition.RelatingPropertyDefinition, obj)
 
-    def add_type_product_psets(self, element, obj):
-        if not hasattr(element, "HasPropertySets") or not element.HasPropertySets:
-            return
-        for definition in element.HasPropertySets:
-            if definition.is_a("IfcPropertySet"):
-                self.add_pset(definition, obj.BIMObjectProperties)
-
     def add_pset(self, pset, props):
         new_pset = props.psets.add()
         new_pset.name = pset.Name

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

@@ -12,7 +12,6 @@ class Data:
             return
         product = file.by_id(product_id)
         cls.products[product_id] = []
-        attributes = product.get_info()
         declaration = IfcStore.get_schema().declaration_by_name(product.is_a())
         for attribute in declaration.all_attributes():
             data_type = str(attribute.type_of_attribute())

src/ifcblenderexport/blenderbim/bim/module/attribute/operator.py

@@ -76,11 +76,10 @@ class EditAttributes(bpy.types.Operator):
                 attributes[attribute["name"]] = blender_attribute.float_value
             elif attribute["type"] == "enum":
                 attributes[attribute["name"]] = blender_attribute.enum_value
-        usecase = edit_attributes.Usecase(self.file, {
+        edit_attributes.Usecase(self.file, {
             "product": self.file.by_id(props.ifc_definition_id),
             "attributes": attributes
-        })
+        }).execute()
-        usecase.execute()
         Data.load(props.ifc_definition_id)
         bpy.ops.bim.disable_editing_attributes()
         return {"FINISHED"}

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

@@ -20,9 +20,6 @@ class BIM_PT_attributes(Panel):
         if props.ifc_definition_id not in Data.products:
             Data.load(props.ifc_definition_id)
 
-        props = context.active_object.BIMObjectProperties
-
-
         if props.is_editing_attributes:
             row = self.layout.row(align=True)
             row.operator("bim.edit_attributes", icon="CHECKMARK", text="Save Attributes")

src/ifcblenderexport/blenderbim/bim/module/pset/__init__.py

@@ -0,0 +1,20 @@
+import bpy
+from . import ui, operator
+
+classes = (
+    operator.TogglePsetExpansion,
+    operator.EnablePsetEditing,
+    operator.DisablePsetEditing,
+    operator.EditPset,
+    operator.RemovePset,
+    operator.AddPset,
+    ui.BIM_PT_object_psets,
+)
+
+
+def register():
+    pass
+
+
+def unregister():
+    pass

src/ifcblenderexport/blenderbim/bim/module/pset/add_pset.py

@@ -0,0 +1,41 @@
+import ifcopenshell
+import blenderbim.bim.schema  # TODO: refactor
+
+
+class Usecase:
+    def __init__(self, file, settings=None):
+        self.file = file
+        self.settings = {"product": None, "Name": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        if self.settings["product"].is_a("IfcObject"):
+            pset = self.file.create_entity(
+                "IfcPropertySet", **{"GlobalId": ifcopenshell.guid.new(), "Name": self.settings["Name"]}
+            )
+            self.file.create_entity(
+                "IfcRelDefinesByProperties",
+                **{
+                    "GlobalId": ifcopenshell.guid.new(),
+                    # TODO: owner history
+                    "RelatedObjects": [self.settings["product"]],
+                    "RelatingPropertyDefinition": pset,
+                }
+            )
+        elif self.settings["product"].is_a("IfcTypeObject"):
+            pset = self.file.create_entity(
+                "IfcPropertySet", **{"GlobalId": ifcopenshell.guid.new(), "Name": self.settings["Name"]}
+            )
+            has_property_sets = list(self.settings["product"].HasPropertySets)
+            has_property_sets.append(pset)
+            self.settings["product"].HasPropertySets = has_property_sets
+        elif self.settings["product"].is_a("IfcMaterialDefinition"):
+            pset = self.file.create_entity(
+                "IfcPropertySet",
+                **{
+                    "GlobalId": ifcopenshell.guid.new(),
+                    "Name": self.settings["Name"],
+                    "Material": self.settings["product"],
+                }
+            )

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

@@ -0,0 +1,129 @@
+import ifcopenshell
+import blenderbim.bim.schema # TODO: refactor elsewhere
+from blenderbim.bim.ifc import IfcStore
+
+
+class Data:
+    products = {}
+    psets = {}
+
+    @classmethod
+    def load(cls, product_id):
+        file = IfcStore.get_file()
+        if not file:
+            return
+        product = file.by_id(product_id)
+        cls.products[product_id] = set()
+        if product.is_a("IfcElementType"):
+            cls.add_type_product_psets(product, product_id)
+        else:
+            cls.add_product_psets(product, product_id)
+
+    @classmethod
+    def add_type_product_psets(cls, product, product_id):
+        if not hasattr(product, "HasPropertySets") or not product.HasPropertySets:
+            return # TODO
+        for definition in product.HasPropertySets:
+            if definition.is_a("IfcPropertySet"):
+                cls.add_pset(definition, product_id)
+
+    @classmethod
+    def add_product_psets(cls, product, product_id):
+        if not hasattr(product, "IsDefinedBy") or not product.IsDefinedBy:
+            return
+        for definition in product.IsDefinedBy:
+            if not definition.is_a("IfcRelDefinesByProperties"):
+                continue
+            if definition.RelatingPropertyDefinition.is_a("IfcPropertySet"):
+                cls.add_pset(definition.RelatingPropertyDefinition, product_id)
+
+    @classmethod
+    def add_pset(cls, pset, product_id):
+        new_pset = {
+            "Name": pset.Name,
+            "is_expanded": True,
+            "Properties": []
+        }
+        cls.products[product_id].add(int(pset.id()))
+        cls.psets[int(pset.id())] = new_pset
+        pset_template = blenderbim.bim.schema.ifc.psetqto.get_by_name(pset.Name)
+        if pset_template:
+            for prop_template in pset_template.HasPropertyTemplates:
+                if not prop_template.is_a("IfcSimplePropertyTemplate"):
+                    continue # Other types not yet supported
+                enum_items = []
+                if prop_template.TemplateType == "P_SINGLEVALUE":
+                    data_type = str(IfcStore.get_schema().declaration_by_name(prop_template.PrimaryMeasureType))
+                elif prop_template.TemplateType == "P_ENUMERATEDVALUE":
+                    data_type = "enum"
+                    enum_items = [v.wrappedValue for v in prop_template.Enumerators.EnumerationValues]
+                else:
+                    continue # Other types not yet supported
+                if "<string>" in data_type:
+                    data_type = "string"
+                elif "<real>" in data_type:
+                    data_type = "float"
+                elif "<integer>" in data_type:
+                    data_type = "integer"
+                elif "<boolean>" in data_type:
+                    data_type = "boolean"
+                elif "<enumeration" in data_type:
+                    data_type = "enum"
+                    enum_items = attribute.type_of_attribute().declared_type().enumeration_items()
+                new_pset["Properties"].append({
+                    "Name": prop_template.Name,
+                    "value": None,
+                    "type": data_type,
+                    "enum_items": enum_items,
+                    "is_null": True
+                })
+        try:
+            if hasattr(pset, "HasProperties"):
+                props = pset.HasProperties
+            elif hasattr(pset, "Properties"): # For IfcMaterialProperties
+                props = pset.Properties
+        except:
+            return # I've seen ArchiCAD produce invalid IFCs with empty data
+        # Invalid IFC, but some vendors like Solidworks do this so we accomodate it
+        if not props:
+            return
+        for prop in props:
+            if prop.is_a("IfcPropertySingleValue") and prop.NominalValue:
+                has_existing_prop = False
+                for existing_prop in new_pset["Properties"]:
+                    if existing_prop["Name"] == prop.Name:
+                        if prop.NominalValue is None:
+                            existing_prop["value"] = None
+                        elif existing_prop["type"] == "string":
+                            existing_prop["value"] = str(prop.NominalValue.wrappedValue)
+                        elif existing_prop["type"] == "float":
+                            existing_prop["value"] = float(prop.NominalValue.wrappedValue)
+                        elif existing_prop["type"] == "integer":
+                            existing_prop["value"] = int(prop.NominalValue.wrappedValue)
+                        elif existing_prop["type"] == "boolean":
+                            existing_prop["value"] = bool(prop.NominalValue.wrappedValue)
+                        elif existing_prop["type"] == "enum":
+                            existing_prop["value"] = str(prop.NominalValue.wrappedValue)
+                        existing_prop["is_null"] = prop.NominalValue.wrappedValue is None
+                        has_existing_prop = True
+                        break
+                if not has_existing_prop:
+                    value = prop.NominalValue.wrappedValue
+                    if isinstance(value, str):
+                        data_type = "string"
+                    elif isinstance(value, float):
+                        data_type = "float"
+                    elif isinstance(value, bool):
+                        data_type = "boolean"
+                    elif isinstance(value, int):
+                        data_type = "integer"
+                    else:
+                        data_type = "string"
+                        value = str(value)
+                    new_pset["Properties"].append({
+                        "Name": prop.Name,
+                        "value": value,
+                        "type": data_type,
+                        "enum_items": [],
+                        "is_null": prop.NominalValue.wrappedValue is None
+                    })

src/ifcblenderexport/blenderbim/bim/module/pset/edit_pset.py

@@ -0,0 +1,55 @@
+import blenderbim.bim.schema  # TODO: refactor
+
+
+class Usecase:
+    def __init__(self, file, settings=None):
+        self.file = file
+        self.settings = {"pset": None, "Name": None, "Properties": {}}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        if hasattr(self.settings["pset"], "HasProperties"):
+            attr_name = "HasProperties"
+        elif hasattr(self.settings["pset"], "Properties"):  # For IfcMaterialProperties
+            attr_name = "Properties"
+        props = getattr(self.settings["pset"], attr_name) or []
+
+        if self.settings["Name"]:
+            self.settings["pset"].Name = self.settings["Name"]
+
+        pset_template = blenderbim.bim.schema.ifc.psetqto.get_by_name(self.settings["pset"].Name)
+
+        for prop in props:
+            if prop.Name in self.settings["Properties"]:
+                value = self.settings["Properties"][prop.Name]
+                primary_measure_type = self.get_primary_measure_type(
+                    pset_template, prop.Name, previous_value=prop.NominalValue
+                )
+                if value is not None:
+                    prop.NominalValue = self.file.create_entity(primary_measure_type, value)
+                else:
+                    prop.NominalValue = None
+                del self.settings["Properties"][prop.Name]
+        properties = []
+        for name, value in self.settings["Properties"].items():
+            if value is None:
+                continue
+            primary_measure_type = self.get_primary_measure_type(pset_template, name)
+            properties.append(
+                self.file.create_entity(
+                    "IfcPropertySingleValue",
+                    **{"Name": name, "NominalValue": self.file.create_entity(primary_measure_type, value)},
+                )
+            )
+        props = list(props)
+        props.extend(properties)
+        setattr(self.settings["pset"], attr_name, props)
+
+    def get_primary_measure_type(self, pset_template, name, previous_value=None):
+        if not pset_template:
+            return previous_value.is_a() if previous_value else "IfcLabel"
+        for prop_template in pset_template.HasPropertyTemplates:
+            if prop_template.Name == name:
+                return prop_template.PrimaryMeasureType
+        return previous_value.is_a() if previous_value else "IfcLabel"

src/ifcblenderexport/blenderbim/bim/module/pset/operator.py

@@ -0,0 +1,132 @@
+import bpy
+import json
+import blenderbim.bim.module.pset.add_pset as add_pset
+import blenderbim.bim.module.pset.edit_pset as edit_pset
+import blenderbim.bim.module.pset.remove_pset as remove_pset
+from blenderbim.bim.ifc import IfcStore
+from blenderbim.bim.module.pset.data import Data
+
+
+class TogglePsetExpansion(bpy.types.Operator):
+    bl_idname = "bim.toggle_pset_expansion"
+    bl_label = "Toggle Pset Expansion"
+    pset_id: bpy.props.IntProperty()
+
+    def execute(self, context):
+        obj = bpy.context.active_object
+        props = obj.BIMObjectProperties
+        Data.psets[self.pset_id]["is_expanded"] = not Data.psets[self.pset_id]["is_expanded"]
+        return {"FINISHED"}
+
+
+class EnablePsetEditing(bpy.types.Operator):
+    bl_idname = "bim.enable_pset_editing"
+    bl_label = "Enable Pset Editing"
+    pset_id: bpy.props.IntProperty()
+
+    def execute(self, context):
+        obj = bpy.context.active_object
+        props = obj.BIMObjectProperties
+
+        while len(props.properties) > 0:
+            props.properties.remove(0)
+
+        props.active_pset_name = Data.psets[self.pset_id]["Name"]
+        for prop in Data.psets[self.pset_id]["Properties"]:
+            new = props.properties.add()
+            new.name = prop["Name"]
+            new.is_null = prop["is_null"]
+            if prop["type"] == "string":
+                new.string_value = prop["value"] or ""
+            elif prop["type"] == "integer":
+                new.int_value = prop["value"] or 0
+            elif prop["type"] == "float":
+                new.float_value = prop["value"] or 0.
+            elif prop["type"] == "boolean":
+                new.bool_value = prop["value"] or False
+            elif prop["type"] == "enum":
+                new.enum_items = json.dumps(prop["enum_items"])
+                if prop["value"]:
+                    new.enum_value = prop["value"]
+
+        props.active_pset_id = self.pset_id
+        return {"FINISHED"}
+
+
+class DisablePsetEditing(bpy.types.Operator):
+    bl_idname = "bim.disable_pset_editing"
+    bl_label = "Disable Pset Editing"
+
+    def execute(self, context):
+        obj = bpy.context.active_object
+        props = obj.BIMObjectProperties
+        props.active_pset_id = 0
+        return {"FINISHED"}
+
+
+class EditPset(bpy.types.Operator):
+    bl_idname = "bim.edit_pset"
+    bl_label = "Edit Pset"
+
+    def execute(self, context):
+        self.file = IfcStore.get_file()
+        obj = bpy.context.active_object
+        props = obj.BIMObjectProperties
+        properties = {}
+        for prop in Data.psets[props.active_pset_id]["Properties"]:
+            blender_prop = props.properties.get(prop["Name"])
+            if not blender_prop:
+                continue
+            if blender_prop.is_null:
+                properties[prop["Name"]] = None
+            elif prop["type"] == "string":
+                properties[prop["Name"]] = blender_prop.string_value
+            elif prop["type"] == "boolean":
+                properties[prop["Name"]] = blender_prop.bool_value
+            elif prop["type"] == "integer":
+                properties[prop["Name"]] = blender_prop.int_value
+            elif prop["type"] == "float":
+                properties[prop["Name"]] = blender_prop.float_value
+            elif prop["type"] == "enum":
+                properties[prop["Name"]] = blender_prop.enum_value
+        edit_pset.Usecase(self.file, {
+            "pset": self.file.by_id(props.active_pset_id),
+            "Name": props.active_pset_name,
+            "Properties": properties
+        }).execute()
+        Data.load(props.ifc_definition_id)
+        bpy.ops.bim.disable_pset_editing()
+        return {"FINISHED"}
+
+
+class RemovePset(bpy.types.Operator):
+    bl_idname = "bim.remove_pset"
+    bl_label = "Remove Pset"
+    pset_id: bpy.props.IntProperty()
+
+    def execute(self, context):
+        self.file = IfcStore.get_file()
+        obj = bpy.context.active_object
+        props = obj.BIMObjectProperties
+        remove_pset.Usecase(self.file, {
+            "product": self.file.by_id(props.ifc_definition_id),
+            "pset": self.file.by_id(self.pset_id),
+        }).execute()
+        Data.load(props.ifc_definition_id)
+        return {"FINISHED"}
+
+
+class AddPset(bpy.types.Operator):
+    bl_idname = "bim.add_pset"
+    bl_label = "Add Pset"
+
+    def execute(self, context):
+        self.file = IfcStore.get_file()
+        obj = bpy.context.active_object
+        props = obj.BIMObjectProperties
+        add_pset.Usecase(self.file, {
+            "product": self.file.by_id(props.ifc_definition_id),
+            "Name": props.pset_name,
+        }).execute()
+        Data.load(props.ifc_definition_id)
+        return {"FINISHED"}

src/ifcblenderexport/blenderbim/bim/module/pset/remove_pset.py

@@ -0,0 +1,27 @@
+import blenderbim.bim.schema  # TODO: refactor
+
+
+class Usecase:
+    def __init__(self, file, settings=None):
+        self.file = file
+        self.settings = {"product": None, "pset": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        to_purge = []
+        should_remove_pset = True
+        for inverse in self.file.get_inverse(self.settings["pset"]):
+            if inverse.is_a("IfcRelDefinesByProperties"):
+                if not inverse.RelatedObjects or len(inverse.RelatedObjects) == 1:
+                    to_purge.append(inverse)
+                else:
+                    related_objects = list(inverse.RelatedObjects)
+                    related_objects.remove(self.settings["product"])
+                    inverse.RelatedObjects = related_objects
+                    should_remove_pset = False
+        if should_remove_pset:
+            self.file.remove(self.settings["pset"])
+        for element in to_purge:
+            self.file.remove(element)
+        # TODO: implement deep purging

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

@@ -0,0 +1,74 @@
+from bpy.types import Panel
+from blenderbim.bim.module.pset.data import Data
+
+
+class BIM_PT_object_psets(Panel):
+    bl_label = "IFC Object Property Sets"
+    bl_idname = "BIM_PT_object_psets"
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "object"
+
+    @classmethod
+    def poll(cls, context):
+        return context.active_object is not None and hasattr(context.active_object, "BIMObjectProperties")
+
+    def draw(self, context):
+        props = context.active_object.BIMObjectProperties
+        if not props.ifc_definition_id:
+            return
+        if props.ifc_definition_id not in Data.products:
+            Data.load(props.ifc_definition_id)
+        row = self.layout.row(align=True)
+        row.prop(props, "pset_name", text="")
+        row.operator("bim.add_pset", icon="ADD", text="")
+
+        self.draw_psets_ui(props, Data.products[props.ifc_definition_id])
+
+        # TODO reimplement. See #1222.
+        #if props.relating_type and props.relating_type.BIMObjectProperties.psets:
+        #    self.layout.label(text="Inherited Psets:")
+        #    self.draw_psets_ui(props.relating_type.BIMObjectProperties, enabled=False)
+
+    def draw_psets_ui(self, props, pset_ids):
+        for pset_id in pset_ids:
+            pset = Data.psets[pset_id]
+            box = self.layout.box()
+            row = box.row(align=True)
+            icon = "TRIA_DOWN" if pset["is_expanded"] else "TRIA_RIGHT"
+            row.operator("bim.toggle_pset_expansion", icon=icon, text="", emboss=False).pset_id = pset_id
+            if not props.active_pset_id:
+                row.label(text=pset["Name"], icon="COPY_ID")
+                row.operator("bim.enable_pset_editing", icon="GREASEPENCIL", text="").pset_id = pset_id
+                row.operator("bim.remove_pset", icon="X", text="").pset_id = pset_id
+            elif props.active_pset_id != pset_id:
+                row.label(text=pset["Name"], icon="COPY_ID")
+                row.operator("bim.remove_pset", icon="X", text="").pset_id = pset_id
+            elif props.active_pset_id == pset_id:
+                row.prop(props, "active_pset_name", icon="COPY_ID", text="")
+                row.operator("bim.edit_pset", icon="CHECKMARK", text="")
+                row.operator("bim.disable_pset_editing", icon="X", text="")
+            if pset["is_expanded"]:
+                if props.active_pset_id == pset_id:
+                    for prop in pset["Properties"]:
+                        row = box.row(align=True)
+                        blender_prop = props.properties.get(prop["Name"])
+                        if prop["type"] == "string":
+                            row.prop(blender_prop, "string_value", text=prop["Name"])
+                        elif prop["type"] == "integer":
+                            row.prop(blender_prop, "int_value", text=prop["Name"])
+                        elif prop["type"] == "float":
+                            row.prop(blender_prop, "float_value", text=prop["Name"])
+                        elif prop["type"] == "boolean":
+                            row.prop(blender_prop, "bool_value", text=prop["Name"])
+                        elif prop["type"] == "enum":
+                            row.prop(blender_prop, "enum_value", text=prop["Name"])
+                        row.prop(blender_prop, "is_null", icon="RADIOBUT_OFF" if blender_prop.is_null else "RADIOBUT_ON", text="")
+                else:
+                    for prop in pset["Properties"]:
+                        if prop["value"] is None or prop["value"] == "":
+                            continue
+                        row = box.row(align=True)
+                        row.scale_y = 0.8
+                        row.label(text=prop["Name"])
+                        row.label(text=str(prop["value"]))

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -484,45 +484,6 @@ class AddQto(bpy.types.Operator):
         return {"FINISHED"}
 
 
-class AddPset(bpy.types.Operator):
-    bl_idname = "bim.add_pset"
-    bl_label = "Add Pset"
-
-    def execute(self, context):
-        name = bpy.context.active_object.BIMObjectProperties.pset_name
-        pset_template = schema.ifc.psetqto.get_by_name(name)
-        if not pset_template:
-            return {"FINISHED"}
-        for obj in bpy.context.selected_objects:
-            if "/" not in obj.name or obj.BIMObjectProperties.psets.find(name) != -1:
-                continue
-            applicable_psets = schema.ifc.psetqto.get_applicable_names(obj.name.split("/")[0], pset_only=True)
-            if name not in applicable_psets:
-                continue
-            pset = obj.BIMObjectProperties.psets.add()
-            pset.name = name
-            for prop_name in (p.Name for p in pset_template.HasPropertyTemplates):
-                prop = pset.properties.add()
-                prop.name = prop_name
-        return {"FINISHED"}
-
-
-class RemovePset(bpy.types.Operator):
-    bl_idname = "bim.remove_pset"
-    bl_label = "Remove Pset"
-    pset_index: bpy.props.IntProperty()
-
-    def execute(self, context):
-        name = bpy.context.active_object.BIMObjectProperties.psets[self.pset_index].name
-        for obj in bpy.context.selected_objects:
-            if "/" not in obj.name:
-                continue
-            index = obj.BIMObjectProperties.psets.find(name)
-            if index != -1:
-                obj.BIMObjectProperties.psets.remove(index)
-        return {"FINISHED"}
-
-
 class RemoveQto(bpy.types.Operator):
     bl_idname = "bim.remove_qto"
     bl_label = "Remove Qto"

src/ifcblenderexport/blenderbim/bim/prop.py

@@ -40,7 +40,7 @@ psettemplatefiles_enum = []
 propertysettemplates_enum = []
 classification_enum = []
 attributes_enum = []
-psetnames_enum = []
+psetnames = {}
 qtonames_enum = []
 materialattributes_enum = []
 materialtypes_enum = []
@@ -435,12 +435,14 @@ def refreshReferences(self, context):
 
 
 def getPsetNames(self, context):
-    global psetnames_enum
+    global psetnames
-    psetnames_enum.clear()
+    if "/" in context.active_object.name:
-    if "/" in context.active_object.name and context.active_object.name.split("/")[0] in schema.ifc.elements:
+        ifc_class = context.active_object.name.split("/")[0]
-        pset_names = schema.ifc.psetqto.get_applicable_names(context.active_object.name.split("/")[0], pset_only=True)
+        if ifc_class not in psetnames:
-        psetnames_enum.extend([(p, p, "") for p in pset_names])
+            psets = schema.ifc.psetqto.get_applicable(ifc_class, pset_only=True)
-    return psetnames_enum
+            psetnames[ifc_class] = [(p.Name, p.Name, "") for p in psets]
+        return psetnames[ifc_class]
+    return []
 
 
 def getMaterialPsetNames(self, context):
@@ -1483,6 +1485,9 @@ class BIMObjectProperties(PropertyGroup):
     is_editing_type: BoolProperty(name="Is Editing Type")
     relating_type: PointerProperty(name="Type Product", type=bpy.types.Object)
     relating_structure: PointerProperty(name="Spatial Container", type=bpy.types.Object)
+    active_pset_id: IntProperty(name="Active Pset ID")
+    active_pset_name: StringProperty(name="Pset Name")
+    properties: CollectionProperty(name="Properties", type=Attribute)
     psets: CollectionProperty(name="Psets", type=PsetQto)
     qtos: CollectionProperty(name="Qtos", type=PsetQto)
     document_references: CollectionProperty(name="Document References", type=DocumentReference)

src/ifcblenderexport/blenderbim/bim/schema.py

@@ -29,6 +29,7 @@ class IfcSchema:
 
         self.property_files = []
         property_paths = self.data_dir.joinpath("pset").glob("*.ifc")
+        # TODO: add IFC2X3 PsetQto template support
         self.psetqto = ifcopenshell.util.pset.PsetQto("IFC4")
         for path in property_paths:
             self.psetqto.templates.append(ifcopenshell.open(path))

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -143,73 +143,6 @@ class BIM_PT_object_material(Panel):
                     row.prop(attribute, "string_value", text="")
 
 
-class BIM_PT_object_psets(Panel):
-    bl_label = "IFC Object Property Sets"
-    bl_idname = "BIM_PT_object_psets"
-    bl_space_type = "PROPERTIES"
-    bl_region_type = "WINDOW"
-    bl_context = "object"
-
-    @classmethod
-    def poll(cls, context):
-        return context.active_object is not None and hasattr(context.active_object, "BIMObjectProperties")
-
-    def draw(self, context):
-        if context.active_object is None:
-            return
-        layout = self.layout
-        props = context.active_object.BIMObjectProperties
-        row = layout.row(align=True)
-        row.prop(props, "pset_name", text="")
-        row.operator("bim.add_pset")
-
-        self.draw_psets_ui(props)
-
-        if props.relating_type and props.relating_type.BIMObjectProperties.psets:
-            layout.label(text="Inherited Psets:")
-            self.draw_psets_ui(props.relating_type.BIMObjectProperties, enabled=False)
-
-    def draw_psets_ui(self, props, enabled=True):
-        for index, pset in enumerate(props.psets):
-            box = self.layout.box()
-            row = box.row(align=True)
-            row.prop(
-                pset,
-                "is_expanded",
-                icon="TRIA_DOWN" if pset.is_expanded else "TRIA_RIGHT",
-                icon_only=True,
-                emboss=False,
-            )
-            row2 = row.row(align=True)
-            row2.enabled = enabled
-            row2.prop(pset, "name", text="", icon="COPY_ID", emboss=pset.is_editable)
-
-            if enabled:
-                row.prop(pset, "is_editable", icon="CHECKMARK" if pset.is_editable else "GREASEPENCIL", icon_only=True)
-                row.operator("bim.remove_pset", icon="X", text="").pset_index = index
-            if not pset.is_expanded:
-                continue
-            if pset.is_editable:
-                for prop in pset.properties:
-                    row = box.row(align=True)
-                    row.enabled = enabled
-                    row.prop(prop, "name", text="")
-                    row.prop(prop, "string_value", text="")
-                    if not enabled:
-                        continue
-                    op = row.operator("bim.copy_property_to_selection", icon="COPYDOWN", text="")
-                    op.pset_name = pset.name
-                    op.prop_name = prop.name
-                    op.prop_value = prop.string_value
-            else:
-                col = box.column(align=True)
-                for prop in pset.properties:
-                    if not prop.string_value:
-                        continue
-                    col.enabled = enabled
-                    col.prop(prop, "string_value", text=prop.name)
-
-
 class BIM_PT_object_qto(Panel):
     bl_label = "IFC Object Quantity Sets"
     bl_idname = "BIM_PT_object_qto"