Material total now shows the total of the select material class, not all material classes

This is more meaningful. Often the presence of sets will inflate the number artificially.

.github/workflows/ci.yml

@@ -46,7 +46,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install xmlschema xsdata numpy lxml pytest isodate lark networkx tabulate python-dateutil
+          pip install xmlschema xsdata numpy lxml pytest isodate lark networkx tabulate python-dateutil shapely
           pip install src/bcf --no-deps
           pip install https://github.com/Andrej730/aud/archive/refs/heads/master-reduced-size.zip
 
@@ -90,7 +90,7 @@ jobs:
                -DPYTHON_INCLUDE_DIR:PATH=${{ env.pythonLocation }}/include/python3.11 \
                -DPYTHON_LIBRARY:FILEPATH=${{ env.pythonLocation }}/lib/libpython3.11.so \
                -DCOLLADA_SUPPORT=Off \
-               "-DSCHEMA_VERSIONS=2x3;4;4x3_add1" \
+               "-DSCHEMA_VERSIONS=2x3;4;4x3;4x3_add1;4x3_add2" \
                -DGLTF_SUPPORT=On \
                -DJSON_INCLUDE_DIR=/usr/include \
                -DCGAL_INCLUDE_DIR=/usr/include \

cmake/CMakeLists.txt

@@ -36,7 +36,9 @@ if(NOT CMAKE_BUILD_TYPE)
 endif()
 
 # use extra version to make pre-release using eg semver
-set(EXTRA_VERSION "-alpha.3")
+if(NOT DEFINED EXTRA_VERSION)
+    set(EXTRA_VERSION "-alpha.3")
+endif()
 
 option(MINIMAL_BUILD "The build is to make a minimal version of IFC converter from OCCT into IFC." OFF)
 option(WASM_BUILD "Build a WebAssembly binary." OFF)
@@ -1147,9 +1149,10 @@ endif()
 
 # Packaging
 list(APPEND CPACK_SOURCE_IGNORE_FILES
-    .git
-    .gitignore
+    "/\\\\.git"
+    "/build/"
 )
+set(CPACK_SOURCE_INSTALLED_DIRECTORIES "${CMAKE_SOURCE_DIR}/..;/")
 set(CPACK_PACKAGE_NAME "${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}${EXTRA_VERSION}")
 set(CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${PROJECT_VERSION}${EXTRA_VERSION}")
 SET(CPACK_PACKAGE_FILE_NAME "${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}${EXTRA_VERSION}-${CMAKE_SYSTEM_NAME}")

src/bcf/pyproject.toml

@@ -13,7 +13,7 @@ readme = "README.md"
 requires-python = ">=3.8"
 keywords = ["IFC", "BCF", "BIM"]
 dependencies = [
-    "xsdata",
+    "xsdata>=24.4",
     "numpy",
     "ifcopenshell",
 ]

src/bcf/src/bcf/xml_parser.py

@@ -10,14 +10,14 @@ from xsdata.formats.dataclass.serializers.config import SerializerConfig
 def build_xml_parser(context: Optional[XmlContext] = None) -> XmlParser:
     """Return a parser for an XML file."""
     parser = XmlParser(context=context or XmlContext())
-    parser.register_namespace("xs", "http://www.w3.org/2001/XMLSchema")
+    parser.register_namespace(ns_map=parser.ns_map, prefix="xs", uri="http://www.w3.org/2001/XMLSchema")
     return parser
 
 
 def build_serializer(context: Optional[XmlContext] = None) -> XmlSerializer:
     """Return a serializer for an XML file."""
     return XmlSerializer(
-        config=SerializerConfig(pretty_print=True),
+        config=SerializerConfig(indent="  "),
         context=context or XmlContext(),
     )
 
@@ -36,8 +36,9 @@ class AbstractXmlParserSerializer(Protocol):
             xml: The XML file as bytes.
             clazz: The class to parse to.
         """
+        ...
 
-    def serialize(self, obj: T, ns_map: Optional[dict[str, str]] = None) -> str:
+    def serialize(self, obj: object, ns_map: Optional[dict[str, str]] = None) -> str:
         """
         Serialize an object to XML.
 
@@ -48,6 +49,7 @@ class AbstractXmlParserSerializer(Protocol):
         Returns:
             The XML as string.
         """
+        ...
 
 
 class XmlParserSerializer:
@@ -68,7 +70,7 @@ class XmlParserSerializer:
         """
         return self.parser.from_bytes(xml, clazz)
 
-    def serialize(self, obj: T, ns_map: Optional[dict[str, str]] = None) -> str:
+    def serialize(self, obj: object, ns_map: Optional[dict[Optional[str], str]] = None) -> str:
         """
         Serialize an object to XML.
 
@@ -79,5 +81,5 @@ class XmlParserSerializer:
         Returns:
             The XML as string.
         """
-        ns_map = ns_map or {"xs": "http://www.w3.org/2001/XMLSchema"}
+        ns_map = ns_map or self.parser.ns_map or {"xs": "http://www.w3.org/2001/XMLSchema"}
         return self.serializer.render(obj, ns_map)

src/blenderbim/Makefile

@@ -277,34 +277,6 @@ endif
 	cp -r dist/working/pyparsing-2.4.5/pyparsing.py dist/blenderbim/libs/site/packages/
 	rm -rf dist/working
 
-	# Required by bcf
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/5b/ef/f97c3e1a7efa00e989a793fe15297214fc95ad7d9e3810586bd08ce9f0f3/xmlschema-2.0.2.tar.gz
-	cd dist/working && tar -xzvf xmlschema*
-	cp -r dist/working/xmlschema-2.0.2/xmlschema dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by bcf
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/ad/c7/17c9d16320d8e2cfdb27d2fd298b5e8f7a3f211025b0c1bc7a39a85bd690/xsdata-22.11.tar.gz
-	cd dist/working && tar -xzvf xsdata*
-	cp -r dist/working/xsdata-22.11/xsdata dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by bcf
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/11/bc/5afb61dd5d863e5cf77cd952445c50c17e65953405986f19e97e4389692a/elementpath-3.0.2.tar.gz
-	cd dist/working && tar -xzvf elementpath*
-	cp -r dist/working/elementpath-3.0.2/elementpath dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
-	# Required by bcf
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/21/9f/b251f7f8a76dec1d6651be194dfba8fb8d7781d10ab3987190de8391d08e/six-1.14.0.tar.gz
-	cd dist/working && tar -xzvf six*
-	cp -r dist/working/six-1.14.0/six.py dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
-
 	# Required by IFCCSV and ifcopenshell.util.selector
 	mkdir dist/working
 	cd dist/working && wget https://files.pythonhosted.org/packages/18/4d/8d522136c37d9e1ea74062b41b8d5e1318ebf45063ae46ce72ed60af223b/lark-parser-0.8.5.tar.gz
@@ -366,7 +338,12 @@ endif
 	# Provides Brickschema functionality
 	cd dist/working && . env/bin/activate && $(PIP) install "brickschema[persistence]==0.7.6a2" --target=./site-packages
 	# Required for SVG to DXF conversion
-	cd dist/working && . env/bin/activate && $(PIP) install "ezdxf" --target=./site-packages
+	cd dist/working && . env/bin/activate && $(PIP) install ezdxf --target=./site-packages
+	# Required by bcf
+	cd dist/working && . env/bin/activate && $(PIP) install xsdata --target=./site-packages
+	cd dist/working && . env/bin/activate && $(PIP) install xmlschema --target=./site-packages
+	cd dist/working && . env/bin/activate && $(PIP) install elementpath --target=./site-packages
+	cd dist/working && . env/bin/activate && $(PIP) install six --target=./site-packages
 	cp -r dist/working/site-packages/* dist/blenderbim/libs/site/packages/
 	rm -rf dist/working
 

src/blenderbim/blenderbim/__init__.py

@@ -18,7 +18,15 @@
 
 import os
 import sys
-import bpy
+
+# Ensure we don't try to import bpy or blenderbim.bim
+# to support running core tests.
+# We assume if bpy was never loaded in current python session
+# then we're not in Blender. It's still possible to use
+# bpy in core and core tests for annotations using TYPE_CHECKING.
+IN_BLENDER = sys.modules.get("bpy", None)
+if IN_BLENDER:
+    import bpy
 import platform
 import traceback
 import subprocess
@@ -78,7 +86,7 @@ def format_debug_info(info: dict):
     return text.strip()
 
 
-if sys.modules.get("bpy", None):
+if IN_BLENDER:
     # Process *.pth in /libs/site/packages to setup globally importable modules
     # This is 3 levels deep as required by the static RPATH of ../../ from dependencies taken from Anaconda
     # site.addsitedir(os.path.join(os.path.dirname(os.path.realpath(__file__)), "libs", "site", "packages"))
@@ -120,11 +128,16 @@ if sys.modules.get("bpy", None):
             bl_context = "scene"
 
             def draw(self, context):
-                layout = self.layout
-                layout.label(text="BlenderBIM could not load.", icon="ERROR")
-                layout.label(text="View the console for full logs.", icon="CONSOLE")
-                box = layout.box()
                 info = get_debug_info()
+
+                layout = self.layout
+                layout.alert = True
+                layout.label(text="BlenderBIM could not load.", icon="ERROR")
+                if info["os"] == "Windows":
+                    layout.operator("wm.console_toggle", text="View the console for full logs.", icon="CONSOLE")
+                else:
+                    layout.label(text="View the console for full logs.", icon="CONSOLE")
+                box = layout.box()
                 py = ".".join(info["python_version"].split(".")[0:2])
                 b3d = ".".join(info["blender_version"].split(".")[0:2])
                 box.label(text=f"Blender {b3d} {info['os']} {info['machine']}", icon="BLENDER")
@@ -133,6 +146,21 @@ if sys.modules.get("bpy", None):
                 op = layout.operator("bim.open_uri", text="How Can I Fix This?")
                 op.uri = "https://docs.blenderbim.org/users/troubleshooting.html#installation-issues"
 
+                layout.label(text="Try Reinstalling:", icon="IMPORT")
+                op = layout.operator("bim.open_uri", text="Re-download Add-on")
+                bbim_date = info["blenderbim_version"].split(".")[-1]
+                py_tag = py.replace(".", "")
+                if "Linux" in info["os"]:
+                    os = "linux"
+                elif "Darwin" in info["os"]:
+                    if "arm64" in info["machine"]:
+                        os = "macosm1"
+                    else:
+                        os = "macos"
+                else:
+                    os = "win"
+                op.uri = f"https://github.com/IfcOpenShell/IfcOpenShell/releases/download/blenderbim-{bbim_date}/blenderbim-{bbim_date}-py{py_tag}-{os}.zip"
+
         class OpenUri(bpy.types.Operator):
             bl_idname = "bim.open_uri"
             bl_label = "Open URI"
@@ -149,14 +177,7 @@ if sys.modules.get("bpy", None):
 
             def execute(self, context):
                 info = format_debug_info(get_debug_info())
-
-                if platform.system() == "Windows":
-                    command = "echo | set /p nul=" + info
-                elif platform.system() == "Darwin":  # for MacOS
-                    command = 'printf "' + info.replace("\n", "\\n").replace('"', "") + '" | pbcopy'
-                else:  # Linux
-                    command = 'printf "' + info.replace("\n", "\\n").replace('"', "") + '" | xclip -selection clipboard'
-                subprocess.run(command, shell=True, check=True)
+                context.window_manager.clipboard = info
                 return {"FINISHED"}
 
         class HiddenPanel:

src/blenderbim/blenderbim/bim/data/assets/schedule.css

@@ -0,0 +1,45 @@
+/*
+ * BlenderBIM Add-on - OpenBIM Blender Add-on
+ * Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+ *
+ * This file is part of BlenderBIM Add-on.
+ *
+ * BlenderBIM Add-on is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * BlenderBIM Add-on is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * You may copy this `schedule.css` template alongside your input schedule
+ * document with the same filename. For example if you have a schedule called
+ * `door_types.ods`, you can create a `door_types.css` in the same folder to
+ * style that schedule.
+ */
+
+/**
+ * If you specify a font size in CSS, such as text { font-size: 5; }, all fonts
+ * will be overriden to match that size.
+ *
+ * If your CSS, ODS, XLSX does not specify a font size, the variables below
+ * will specify the default font size.
+ *
+ * If your ODS, XLSX does specify a font size, they will scale linearly based
+ * on the variables below.
+ */
+
+:root {
+    --font-size-pt: 12;
+    --font-size-px: 4.13;
+    --font-width: 0.45;
+}
+
+text, tspan { /* 2.5mm */ fill: black; stroke: none; font-family: 'OpenGost Type B TT', 'DejaVu Sans Condensed', 'Liberation Sans', 'Arial Narrow', 'Arial'; }

src/blenderbim/blenderbim/bim/helper.py

@@ -29,7 +29,7 @@ from mathutils import geometry
 from mathutils import Vector
 import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
-from typing import Optional, Callable, Any
+from typing import Optional, Callable, Any, Union
 
 
 def draw_attributes(props, layout, copy_operator=None, popup_active_attribute=None):
@@ -91,7 +91,11 @@ def import_attributes(ifc_class, props, data, callback=None):
 
 
 # A more elegant attribute importer signature, intended to supersede import_attributes
-def import_attributes2(element, props, callback=None):
+def import_attributes2(
+    element: Union[str, ifcopenshell.entity_instance],
+    props: bpy.types.PropertyGroup,
+    callback: Optional[Callable] = None,
+) -> None:
     if isinstance(element, str):
         attributes = tool.Ifc.schema().declaration_by_name(element).as_entity().all_attributes()
         info = {a.name(): None for a in attributes}

src/blenderbim/blenderbim/bim/import_ifc.py

@@ -26,6 +26,7 @@ import bmesh
 import logging
 import mathutils
 import numpy as np
+import numpy.typing as npt
 import multiprocessing
 import ifcopenshell
 import ifcopenshell.geom
@@ -303,22 +304,22 @@ class IfcImporter:
         self.update_progress(100)
         bpy.context.window_manager.progress_end()
 
-    def is_element_far_away(self, element):
+    def is_element_far_away(self, element: ifcopenshell.entity_instance) -> bool:
         try:
             placement = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
             point = placement[:, 3][0:3]
             return self.is_point_far_away(point, is_meters=False)
         except:
-            pass
+            return False
 
-    def is_point_far_away(self, point, is_meters=True):
+    def is_point_far_away(
+        self, point: Union[ifcopenshell.entity_instance, npt.NDArray[np.float64]], is_meters: bool = True
+    ) -> bool:
         # Locations greater than 1km are not considered "small sites" according to the georeferencing guide
         # Users can configure this if they have to handle larger sites but beware of surveying precision
         limit = self.ifc_import_settings.distance_limit
         limit = limit if is_meters else (limit / self.unit_scale)
-        coords = point
-        if hasattr(point, "Coordinates"):
-            coords = point.Coordinates
+        coords = getattr(point, "Coordinates", point)
         return abs(coords[0]) > limit or abs(coords[1]) > limit or abs(coords[2]) > limit
 
     def process_context_filter(self):
@@ -608,7 +609,9 @@ class IfcImporter:
 
         threshold = 10000  # Just from experience.
 
-        faces = [len(e.CfsFaces) for e in self.file.by_type("IfcClosedShell")]
+        # The check for CfsFaces/Faces/CoordIndex accommodates invalid data from Cadwork
+        # 0 IfcClosedShell.CfsFaces
+        faces = [len(faces) for e in self.file.by_type("IfcClosedShell") if (faces := e[0])]
         if faces and max(faces) > threshold:
             self.ifc_import_settings.should_use_native_meshes = True
             return
@@ -616,12 +619,14 @@ class IfcImporter:
         if self.file.schema == "IFC2X3":
             return
 
-        faces = [len(e.Faces) for e in self.file.by_type("IfcPolygonalFaceSet")]
+        # 2 IfcPolygonalFaceSet.Faces
+        faces = [len(faces) for e in self.file.by_type("IfcPolygonalFaceSet") if (faces := e[2])]
         if faces and max(faces) > threshold:
             self.ifc_import_settings.should_use_native_meshes = True
             return
 
-        faces = [len(e.CoordIndex) for e in self.file.by_type("IfcTriangulatedFaceSet")]
+        # 3 IfcTriangulatedFaceSet.CoordIndex
+        faces = [len(index) for e in self.file.by_type("IfcTriangulatedFaceSet") if (index := e[3])]
         if faces and max(faces) > threshold:
             self.ifc_import_settings.should_use_native_meshes = True
 
@@ -679,7 +684,7 @@ class IfcImporter:
         props.blender_orthogonal_height = str(offset_point[2])
         props.has_blender_offset = True
 
-    def get_offset_point(self):
+    def get_offset_point(self) -> Union[npt.NDArray[np.float64], None]:
         elements_checked = 0
         # If more than these elements aren't far away, the file probably isn't absolutely positioned
         element_checking_threshold = 10
@@ -714,7 +719,7 @@ class IfcImporter:
             if self.is_point_far_away(point, is_meters=False):
                 return point
 
-    def does_element_likely_have_geometry_far_away(self, element):
+    def does_element_likely_have_geometry_far_away(self, element: ifcopenshell.entity_instance) -> bool:
         for representation in element.Representation.Representations:
             items = []
             for item in representation.Items:
@@ -731,13 +736,14 @@ class IfcImporter:
                     if subelement.is_a("IfcCartesianPoint"):
                         if len(subelement.Coordinates) == 3 and self.is_point_far_away(subelement, is_meters=False):
                             return True
+        return False
 
     def apply_blender_offset_to_matrix_world(self, obj: bpy.types.Object, matrix: np.ndarray) -> mathutils.Matrix:
         props = bpy.context.scene.BIMGeoreferenceProperties
         if props.has_blender_offset:
             if obj.data and obj.data.get("has_cartesian_point_offset", None):
                 obj.BIMObjectProperties.blender_offset_type = "CARTESIAN_POINT"
-            elif self.is_point_far_away((matrix[0, 3], matrix[1, 3], matrix[2, 3])):
+            elif self.is_point_far_away((matrix[:3, 3])):
                 obj.BIMObjectProperties.blender_offset_type = "OBJECT_PLACEMENT"
                 matrix = ifcopenshell.util.geolocation.global2local(
                     matrix,
@@ -750,7 +756,9 @@ class IfcImporter:
 
         return mathutils.Matrix(matrix.tolist())
 
-    def find_decomposed_ifc_class(self, element, ifc_class):
+    def find_decomposed_ifc_class(
+        self, element: ifcopenshell.entity_instance, ifc_class: str
+    ) -> Union[ifcopenshell.entity_instance, None]:
         if element.is_a(ifc_class):
             return element
         rel_aggregates = element.IsDecomposedBy

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

@@ -100,7 +100,7 @@ class BIM_OT_aggregate_unassign_object(bpy.types.Operator, Operator):
                 pset = ifcopenshell.util.element.get_pset(element, 'BBIM_Linked_Aggregate')
                 if pset:
                     pset = tool.Ifc.get().by_id(pset["id"])
-                    ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+                    ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
 
               
 class BIM_OT_enable_editing_aggregate(bpy.types.Operator, Operator):

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

@@ -144,7 +144,7 @@ class BIM_PT_linked_aggregate(Panel):
                 row.label(text="Not a Linked Aggregate")
             else:
                 row.label(text=f"{Number_Linked_Aggregates} Linked Aggregates")
-            op = row.operator("bim.object_duplicate_move_linked_aggregate", text="", icon="DUPLICATE")
+            op = row.operator("bim.duplicate_linked_aggregate_to_3d_cursor", text="", icon="DUPLICATE")
             if type(Number_Linked_Aggregates) is int:
                 if Number_Linked_Aggregates > 0:
                     op = row.operator("bim.select_linked_aggregates", text="", icon="OUTLINER_DATA_POINTCLOUD")

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

@@ -27,15 +27,12 @@ classes = (
     operator.CopyAttributeToSelection,
     prop.BIMAttributeProperties,
     ui.BIM_PT_object_attributes,
-    ui.BIM_PT_material_attributes,
 )
 
 
 def register():
     bpy.types.Object.BIMAttributeProperties = bpy.props.PointerProperty(type=prop.BIMAttributeProperties)
-    bpy.types.Material.BIMAttributeProperties = bpy.props.PointerProperty(type=prop.BIMAttributeProperties)
 
 
 def unregister():
     del bpy.types.Object.BIMAttributeProperties
-    del bpy.types.Material.BIMAttributeProperties

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

@@ -23,7 +23,6 @@ import blenderbim.tool as tool
 
 def refresh():
     AttributesData.is_loaded = False
-    MaterialAttributesData.is_loaded = False
 
 
 class AttributesData:
@@ -51,28 +50,3 @@ class AttributesData:
                 key = "STEP ID"
             results.append({"name": key, "value": str(value)})
         return results
-
-
-class MaterialAttributesData:
-    data = {}
-    is_loaded = False
-
-    @classmethod
-    def load(cls):
-        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 = []
-        element = tool.Ifc.get_entity(bpy.context.active_object.active_material)
-        data = element.get_info()
-        for key, value in data.items():
-            if value is None or isinstance(value, ifcopenshell.entity_instance) or key in ["id", "type"]:
-                continue
-            results.append({"name": key, "value": str(value)})
-        return results

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

@@ -40,14 +40,10 @@ class EnableEditingAttributes(bpy.types.Operator):
     bl_label = "Enable Editing Attributes"
     bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
-    obj_type: bpy.props.StringProperty()
 
     def execute(self, context):
         self.file = IfcStore.get_file()
-        if self.obj_type == "Object":
-            obj = bpy.data.objects.get(self.obj)
-        elif self.obj_type == "Material":
-            obj = bpy.data.materials.get(self.obj)
+        obj = bpy.data.objects.get(self.obj)
         props = obj.BIMAttributeProperties
         props.attributes.clear()
 
@@ -85,13 +81,9 @@ class DisableEditingAttributes(bpy.types.Operator):
     bl_label = "Disable Editing Attributes"
     bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
-    obj_type: bpy.props.StringProperty()
 
     def execute(self, context):
-        if self.obj_type == "Object":
-            obj = bpy.data.objects.get(self.obj)
-        elif self.obj_type == "Material":
-            obj = bpy.data.materials.get(self.obj)
+        obj = bpy.data.objects.get(self.obj)
         props = obj.BIMAttributeProperties
         props.is_editing_attributes = False
         return {"FINISHED"}
@@ -102,14 +94,10 @@ class EditAttributes(bpy.types.Operator, Operator):
     bl_label = "Edit Attributes"
     bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
-    obj_type: bpy.props.StringProperty()
 
     def _execute(self, context):
         self.file = IfcStore.get_file()
-        if self.obj_type == "Object":
-            obj = bpy.data.objects.get(self.obj)
-        elif self.obj_type == "Material":
-            obj = bpy.data.materials.get(self.obj)
+        obj = bpy.data.objects.get(self.obj)
         props = obj.BIMAttributeProperties
         product = tool.Ifc.get_entity(obj)
 
@@ -126,7 +114,7 @@ class EditAttributes(bpy.types.Operator, Operator):
 
         attributes = blenderbim.bim.helper.export_attributes(props.attributes, callback=callback)
         ifcopenshell.api.run("attribute.edit_attributes", self.file, product=product, attributes=attributes)
-        bpy.ops.bim.disable_editing_attributes(obj=obj.name, obj_type=self.obj_type)
+        bpy.ops.bim.disable_editing_attributes(obj=obj.name)
         return {"FINISHED"}
 
 

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

@@ -19,34 +19,34 @@
 import blenderbim.bim.helper
 from bpy.types import Panel
 from blenderbim.bim.ifc import IfcStore
-from blenderbim.bim.module.attribute.data import AttributesData, MaterialAttributesData
+from blenderbim.bim.module.attribute.data import AttributesData
 
 
-def draw_ui(context, layout, obj_type, attributes):
-    obj = context.active_object if obj_type == "Object" else context.active_object.active_material
+def draw_ui(context, layout, attributes):
+    obj = context.active_object
     oprops = obj.BIMObjectProperties
     props = obj.BIMAttributeProperties
 
     if props.is_editing_attributes:
         row = layout.row(align=True)
         op = row.operator("bim.edit_attributes", icon="CHECKMARK", text="Save Attributes")
-        op.obj_type = obj_type
         op.obj = obj.name
         op = row.operator("bim.disable_editing_attributes", icon="CANCEL", text="")
-        op.obj_type = obj_type
         op.obj = obj.name
 
         blenderbim.bim.helper.draw_attributes(props.attributes, layout, copy_operator="bim.copy_attribute_to_selection")
     else:
         row = layout.row()
         op = row.operator("bim.enable_editing_attributes", icon="GREASEPENCIL", text="Edit")
-        op.obj_type = obj_type
         op.obj = obj.name
 
         for attribute in attributes:
             row = layout.row(align=True)
             row.label(text=attribute["name"])
-            row.label(text=attribute["value"])
+            # row.label(text=attribute["value"])
+            op = row.operator("bim.select_similar", text=attribute["value"], icon="NONE", emboss=False)
+            op.key = attribute['name']
+            
 
     # TODO: reimplement, see #1222
     # if "IfcSite/" in context.active_object.name or "IfcBuilding/" in context.active_object.name:
@@ -72,32 +72,4 @@ class BIM_PT_object_attributes(Panel):
     def draw(self, context):
         if not AttributesData.is_loaded:
             AttributesData.load()
-        draw_ui(context, self.layout, "Object", AttributesData.data["attributes"])
-
-
-class BIM_PT_material_attributes(Panel):
-    bl_label = "Material Attributes"
-    bl_idname = "BIM_PT_material_attributes"
-    bl_space_type = "PROPERTIES"
-    bl_region_type = "WINDOW"
-    bl_context = "material"
-
-    @classmethod
-    def poll(cls, context):
-        if not IfcStore.get_file():
-            return False
-        try:
-            return bool(context.active_object.active_material.BIMObjectProperties.ifc_definition_id)
-        except:
-            return False
-
-    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"])
+        draw_ui(context, self.layout, AttributesData.data["attributes"])

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

@@ -155,7 +155,7 @@ class ReferenceUI:
             blenderbim.bim.helper.draw_attributes(self.props.reference_attributes, self.layout)
             row = self.layout.row(align=True)
             op = row.operator("bim.add_manual_classification_reference", text="Save", icon="CHECKMARK")
-            op.type = self.data.data["object_type"]
+            op.obj_type = self.data.data["object_type"]
             row.operator("bim.disable_adding_manual_classification_reference", text="", icon="CANCEL")
         else:
             row = self.layout.row()

src/blenderbim/blenderbim/bim/module/cost/__init__.py

@@ -82,6 +82,7 @@ classes = (
     prop.CostItem,
     prop.CostItemQuantity,
     prop.CostItemType,
+    prop.ScheduleColumn,
     prop.BIMCostProperties,
     ui.BIM_PT_cost_schedules,
     ui.BIM_PT_cost_item_quantities,

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

@@ -19,10 +19,13 @@
 import bpy
 import ifcopenshell
 import ifcopenshell.util.cost
+import ifcopenshell.util.date
 import ifcopenshell.util.element
+import ifcopenshell.util.unit
 import blenderbim.tool as tool
 import blenderbim.bim.schema
 from ifcopenshell.util.doc import get_entity_doc, get_predefined_type_doc
+from typing import Any
 
 
 def refresh():
@@ -34,6 +37,7 @@ def refresh():
 class CostSchedulesData:
     data = {}
     is_loaded = False
+    _cost_values: dict[int, dict[str, Any]]
 
     @classmethod
     def load(cls):
@@ -136,7 +140,7 @@ class CostSchedulesData:
                 data["UnitBasisUnitSymbol"] = "U"
             if cost_value.Category == "*":
                 is_sum = True
-        cost_quantity = data["TotalCostQuantity"] or 1
+        cost_quantity = 1 if data["TotalCostQuantity"] is None else data["TotalCostQuantity"]
         if has_unit_basis:
             data["TotalCost"] = data["TotalAppliedValue"] * cost_quantity / data["UnitBasisValueComponent"]
         else:
@@ -155,6 +159,7 @@ class CostSchedulesData:
         data["UnitSymbol"] = "-"
         if cost_item.CostQuantities:
             quantity = cost_item.CostQuantities[0]
+            data["QuantityType"] = quantity.is_a()
             unit = ifcopenshell.util.unit.get_property_unit(quantity, tool.Ifc.get())
             if unit:
                 data["UnitSymbol"] = ifcopenshell.util.unit.get_unit_symbol(unit)

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

@@ -73,7 +73,7 @@ class RemoveCostSchedule(bpy.types.Operator, tool.Ifc.Operator):
     cost_schedule: bpy.props.IntProperty()
 
     def _execute(self, context):
-        core.remove_cost_schedule(tool.Ifc, cost_schedule=tool.Ifc.get().by_id(self.cost_schedule))
+        core.remove_cost_schedule(tool.Ifc, tool.Cost, cost_schedule=tool.Ifc.get().by_id(self.cost_schedule))
 
 
 class EnableEditingCostSchedule(bpy.types.Operator):
@@ -223,36 +223,40 @@ class EditCostItem(bpy.types.Operator, tool.Ifc.Operator):
 
 class AssignCostItemType(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.assign_cost_item_type"
-    bl_label = "Assign Cost Item Type Product"
+    bl_label = "Assign Cost Item To Product Types"
+    bl_description = "Assign cost item to currently selected or active product types"
     bl_options = {"REGISTER", "UNDO"}
     cost_item: bpy.props.IntProperty()
     prop_name: bpy.props.StringProperty()
 
     def _execute(self, context):
-        core.assign_cost_item_type(
+        product_types = core.assign_cost_item_type(
             tool.Ifc,
             tool.Cost,
             tool.Spatial,
             cost_item=tool.Ifc.get().by_id(self.cost_item),
             prop_name=self.prop_name,  # TODO: REVIEW PROP_NAME USABILITY
         )
+        self.report({"INFO"}, f"Cost item was assigned to {len(product_types)} product types.")
 
 
 class UnassignCostItemType(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.unassign_cost_item_type"
     bl_label = "Unassign Cost Item Type"
+    bl_description = "Unassign cost item from currently selected or active product types"
     bl_options = {"REGISTER", "UNDO"}
     cost_item: bpy.props.IntProperty()
     related_object: bpy.props.IntProperty()
 
     def _execute(self, context):
-        core.unassign_cost_item_type(
+        product_types = core.unassign_cost_item_type(
             tool.Ifc,
             tool.Cost,
             tool.Spatial,
             cost_item=tool.Ifc.get().by_id(self.cost_item),
-            product_types=[tool.Ifc.get().by_id(self.related_object)] if self.related_object else [],
+            product_types=[tool.Ifc.get().by_id(self.related_object)] if self.related_object else None,
         )
+        self.report({"INFO"}, f"Cost item was unassigned from {len(product_types)} product types.")
         return {"FINISHED"}
 
 
@@ -287,9 +291,11 @@ class UnassignCostItemQuantity(bpy.types.Operator, tool.Ifc.Operator):
             tool.Ifc,
             tool.Cost,
             cost_item=tool.Ifc.get().by_id(self.cost_item),
-            products=[tool.Ifc.get().by_id(self.related_object)]
-            if self.related_object
-            else tool.Spatial.get_selected_products(),
+            products=(
+                [tool.Ifc.get().by_id(self.related_object)]
+                if self.related_object
+                else tool.Spatial.get_selected_products()
+            ),
         )
 
 
@@ -509,7 +515,7 @@ class SelectCostScheduleProducts(bpy.types.Operator):
 
 
 class ImportCostScheduleCsv(bpy.types.Operator, ImportHelper, tool.Ifc.Operator):
-    bl_idname = "import_cost_schedule_csv.bim"
+    bl_idname = "bim.import_cost_schedule_csv"
     bl_label = "Import Cost Schedule CSV"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".csv"
@@ -527,6 +533,13 @@ class AddCostColumn(bpy.types.Operator):
     bl_options = {"REGISTER", "UNDO"}
     name: bpy.props.StringProperty()
 
+    @classmethod
+    def poll(cls, context):
+        if not context.scene.BIMCostProperties.cost_column:
+            cls.poll_message_set("Cost column name is empty")
+            return False
+        return True
+
     def execute(self, context):
         core.add_cost_column(tool.Cost, self.name)
         return {"FINISHED"}
@@ -538,7 +551,7 @@ class RemoveCostColumn(bpy.types.Operator):
     bl_options = {"REGISTER", "UNDO"}
     name: bpy.props.StringProperty()
 
-    def _execute(self, context):
+    def execute(self, context):
         core.remove_cost_column(tool.Cost, self.name)
         return {"FINISHED"}
 
@@ -656,13 +669,17 @@ class ExportCostSchedules(bpy.types.Operator):
     bl_options = {"REGISTER", "UNDO"}
     bl_description = "Export a cost schedule to a CSV, XSLX OR ODS file"
     cost_schedule: bpy.props.IntProperty()
-    format: bpy.props.EnumProperty("Format", items=(("CSV", "CSV", ""), ("XLSX", "XLSX", ""), ("ODS", "ODS", "")))
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    format: bpy.props.EnumProperty(name="Format", items=(("CSV", "CSV", ""), ("XLSX", "XLSX", ""), ("ODS", "ODS", "")))
+    directory: bpy.props.StringProperty(subtype="FILE_PATH")
+    filter_folder: bpy.props.BoolProperty(
+        name="Filter Folders",
+        default=True,
+    )
 
     def execute(self, context):
         cost_schedule = tool.Ifc.get().by_id(self.cost_schedule) if self.cost_schedule else None
         r = core.export_cost_schedules(
-            tool.Cost, filepath=self.filepath, format=self.format, cost_schedule=cost_schedule
+            tool.Cost, filepath=self.directory, format=self.format, cost_schedule=cost_schedule
         )
         if isinstance(r, str):
             self.report({"ERROR"}, r)
@@ -676,6 +693,7 @@ class ExportCostSchedules(bpy.types.Operator):
     def draw(self, context):
         self.layout.label(text="Choose a format")
         self.layout.prop(self, "format")
+        self.layout.label(text="Select a directory.")
 
 
 class ClearCostItemAssignments(bpy.types.Operator, tool.Ifc.Operator):

src/blenderbim/blenderbim/bim/module/cost/prop.py

@@ -175,6 +175,10 @@ def update_active_cost_item_resources(self, context):
     bpy.ops.bim.load_cost_item_resource_quantities()
 
 
+class ScheduleColumn(PropertyGroup):
+    schedule_id: IntProperty()
+
+
 class BIMCostProperties(PropertyGroup):
     cost_schedule_predefined_types: EnumProperty(
         items=get_schedule_predefined_types, name="Predefined Type", default=None
@@ -210,9 +214,14 @@ class BIMCostProperties(PropertyGroup):
     cost_value_attributes: CollectionProperty(name="Cost Value Attributes", type=Attribute)
     cost_value_formula: StringProperty(name="Cost Value Formula")
     cost_column: StringProperty(name="Cost Column")
-    should_show_column_ui: BoolProperty(name="Should Show Column UI", default=False)
+    should_show_column_ui: BoolProperty(
+        name="Should Show Column UI",
+        description="Display UI for adding cost schedule columns, column names represent a category for cost item values",
+        default=False,
+    )
     should_show_currency_ui: BoolProperty(name="Should Show Currency UI", default=False)
-    columns: CollectionProperty(name="Columns", type=StrProperty)
+    columns: CollectionProperty(name="Active Schedule Columns", type=StrProperty)
+    columns_storage: CollectionProperty(name="Columns", type=ScheduleColumn)
     active_column_index: IntProperty(name="Active Column Index")
     cost_item_products: CollectionProperty(name="Cost Item Products", type=CostItemQuantity)
     active_cost_item_product_index: IntProperty(name="Active Cost Item Product Index")

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

@@ -21,6 +21,7 @@ import blenderbim.bim.module.cost.prop as CostProp
 from bpy.types import Panel, UIList
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.cost.data import CostSchedulesData
+from typing import Any
 
 
 class BIM_PT_cost_schedules(Panel):
@@ -53,7 +54,7 @@ class BIM_PT_cost_schedules(Panel):
                 row.label(text="No Cost Schedules found.", icon="TEXT")
 
             row.operator("bim.add_cost_schedule", icon="ADD", text="")
-            row.operator("import_cost_schedule_csv.bim",icon="IMPORT",text="")
+            row.operator("bim.import_cost_schedule_csv",icon="IMPORT",text="")
 
         for schedule in CostSchedulesData.data["schedules"]:
             self.draw_cost_schedule_ui(schedule)
@@ -178,24 +179,33 @@ class BIM_PT_cost_schedules(Panel):
             "active_cost_item_index",
         )
         if self.props.active_cost_item_id:
+            cost_item = CostSchedulesData.data["cost_items"][ifc_definition_id]
             if self.props.cost_item_editing_type == "ATTRIBUTES":
                 self.draw_editable_cost_item_attributes_ui()
             elif self.props.cost_item_editing_type == "QUANTITIES":
-                self.draw_editable_cost_item_quantities_ui()
+                self.draw_editable_cost_item_quantities_ui(cost_item)
             elif self.props.cost_item_editing_type == "VALUES":
                 self.draw_editable_cost_item_values_ui()
 
     def draw_editable_cost_item_attributes_ui(self):
         blenderbim.bim.helper.draw_attributes(self.props.cost_item_attributes, self.layout)
 
-    def draw_editable_cost_item_quantities_ui(self):
+    def draw_editable_cost_item_quantities_ui(self, cost_item: dict[str, Any]):
+        quantities = CostSchedulesData.data["cost_quantities"]
         row = self.layout.row(align=True)
-        row.prop(self.props, "quantity_types", text="")
+        # In IFC, all quantities of IfcCostTime should have 1 type.
+        if quantities:
+            quantity_class = cost_item["QuantityType"]
+            row.label(text=quantity_class)
+        else:
+            row.prop(self.props, "quantity_types", text="")
+            quantity_class = self.props.quantity_types
+
         op = row.operator("bim.add_cost_item_quantity", text="", icon="ADD")
         op.cost_item = self.props.active_cost_item_id
-        op.ifc_class = self.props.quantity_types
+        op.ifc_class = quantity_class
 
-        for quantity in CostSchedulesData.data["cost_quantities"]:
+        for quantity in quantities:
             row = self.layout.row(align=True)
             row.label(text=quantity["name"])
             row.label(text=quantity["value"])
@@ -634,7 +644,7 @@ class BIM_UL_cost_items_trait:
         layout.label(text=cost_item["UnitBasisUnitSymbol"])
 
     def draw_total_quantity_column(self, layout, cost_item):
-        if cost_item["TotalCostQuantity"]:
+        if cost_item["TotalCostQuantity"] is not None:
             label = "{0:.2f}".format(cost_item["TotalCostQuantity"]) + f" {cost_item['UnitSymbol'] or '-'}"
             layout.label(text=label)
         else:

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

@@ -23,6 +23,7 @@ import ifccsv
 import logging
 import tempfile
 import ifcopenshell
+import ifcopenshell.util.selector
 import blenderbim.tool as tool
 import blenderbim.bim.module.drawing.scheduler as scheduler
 from blenderbim.bim.ifc import IfcStore

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

@@ -60,13 +60,7 @@ class CopyDebugInformation(bpy.types.Operator):
         print(text)
         print("-" * 80)
 
-        if platform.system() == "Windows":
-            command = "echo | set /p nul=" + text
-        elif platform.system() == "Darwin":  # for MacOS
-            command = 'printf "' + text.replace("\n", "\\n").replace('"', "") + '" | pbcopy'
-        else:  # Linux
-            command = 'printf "' + text.replace("\n", "\\n").replace('"', "") + '" | xclip -selection clipboard'
-        subprocess.run(command, shell=True, check=True)
+        context.window_manager.clipboard = text
         return {"FINISHED"}
 
 

src/blenderbim/blenderbim/bim/module/drawing/decoration.py

@@ -159,9 +159,7 @@ class BaseDecorator:
     objecttype = "NOTDEFINED"
 
     def __init__(self):
-        self.font_id = blf.load(
-            os.path.join(bpy.context.scene.BIMProperties.data_dir, "fonts", "OpenGost Type B TT.ttf")
-        )
+        self.font_id = 0 # 0 is the default font
 
         # POLYLINE_UNIFORM_COLOR is good for smoothed lines since `bgl.enable(GL_LINE_SMOOTH)` is deprecated
         self.line_shader = gpu.shader.from_builtin("POLYLINE_UNIFORM_COLOR")
@@ -404,7 +402,6 @@ class BaseDecorator:
                 line_no += 1 if multiline_to_bottom else -1
             return
 
-        # 0 is the default font, but we're fancier than that
         font_id = self.font_id
 
         color = context.preferences.addons["blenderbim"].preferences.decorations_colour
@@ -2014,6 +2011,13 @@ class DecorationsHandler:
         for object_type in ("SLOPE_ANGLE", "SLOPE_FRACTION", "SLOPE_PERCENT"):
             self.decorators[object_type] = self.decorators["FALL"]
         self.decorators["MULTI_SYMBOL"] = self.decorators["SYMBOL"]
+        if drawing_font := bpy.context.scene.DocProperties.drawing_font:
+            drawing_font_path = os.path.join(bpy.context.scene.BIMProperties.data_dir, "fonts", drawing_font)
+            if os.path.exists(drawing_font_path):
+                font_id = blf.load(drawing_font_path)
+                for decorator in self.decorators.values():
+                    decorator.font_id = font_id
+
 
     def get_objects_and_decorators(self, collection):
         # TODO: do it in data instead of the handler for performance?

src/blenderbim/blenderbim/bim/module/drawing/prop.py

@@ -315,9 +315,7 @@ class RasterStyleProperty(enum.Enum):
     SPACE_SHADING = "space.shading"
 
 
-RASTER_STYLE_PROPERTIES_EXCLUDE = (
-    "scene.render.filepath",
-)
+RASTER_STYLE_PROPERTIES_EXCLUDE = ("scene.render.filepath",)
 
 
 class DocProperties(PropertyGroup):
@@ -371,6 +369,7 @@ class DocProperties(PropertyGroup):
         default=os.path.join("drawings", "assets", "shading_styles.json"), name="Default Shading Styles"
     )
     shadingstyle_default: StringProperty(default="Blender Default", name="Default Shading Style")
+    drawing_font: StringProperty(default="OpenGost Type B TT.ttf", name="Drawing Font")
 
 
 class BIMCameraProperties(PropertyGroup):

src/blenderbim/blenderbim/bim/module/drawing/scheduler.py

@@ -16,22 +16,21 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
-from blenderbim.bim.module.drawing.svgwriter import SvgWriter
+import os
+import re
+import bpy
+import string
 import svgwrite
 import openpyxl
 
+from blenderbim.bim.module.drawing.svgwriter import SvgWriter
 from odf.opendocument import load as load_ods
 from odf.table import Table, TableRow, TableColumn, TableCell
 from odf.text import P
 from odf.style import Style
 from textwrap import wrap
 from pathlib import Path
-import string
 
-FONT_SIZE = 4.13
-FONT_WIDTH = lambda size: size * 0.45
-FONT_SIZE_PT = 12
-FONT_FAMILY = "OpenGost Type B TT"
 DEBUG = False
 
 
@@ -63,11 +62,29 @@ class Scheduler:
         )
         self.padding = 1
         self.margin = 1
+
+        self.parse_css(infile)
         if infile.endswith("ods"):
             self.schedule_ods(infile, outfile)
         elif infile.endswith("xlsx"):
             self.schedule_xlsx(infile, outfile)
 
+    def parse_css(self, infile):
+        stylesheet_path = os.path.splitext(infile)[0] + ".css"
+        if not os.path.exists(stylesheet_path):
+            stylesheet_path = os.path.join(bpy.context.scene.BIMProperties.data_dir, "assets", "schedule.css")
+        with open(stylesheet_path, "r") as stylesheet:
+            css = stylesheet.read()
+
+        matches = re.search("--font-size-pt:\s*([0-9.]+);", css)
+        self.font_size_pt = float(matches.groups()[0]) if matches else 12  # Default to 12pt
+        matches = re.search("--font-size-px:\s*([0-9.]+);", css)
+        self.font_size_px = float(matches.groups()[0]) if matches else 4.13  # Magic number 4.13px ~= 12pt
+        matches = re.search("--font-width:\s*([0-9.]+);", css)
+        self.font_width = float(matches.groups()[0]) if matches else 0.45  # A magic number for OpenGost
+
+        self.svg.defs.add(self.svg.style(css))
+
     def schedule_xlsx(self, infile, outfile):
         workbook = openpyxl.open(infile, data_only=True)
         sheet = workbook.active
@@ -144,8 +161,8 @@ class Scheduler:
                     x += unmerged_width
                     continue
 
-                font_size = cell.font.size or 11  # 11pt default
-                font_size = font_size / FONT_SIZE_PT * FONT_SIZE  # Magic?
+                font_size = cell.font.size or self.font_size_pt  # 12pt default
+                font_size = font_size / self.font_size_pt * self.font_size_px  # Magic?
 
                 text_position = [0.0, 0.0]
                 if cell.alignment.horizontal == "left":
@@ -424,9 +441,9 @@ class Scheduler:
                         italic_text = final_cell_style.get("font-style", None) == "italic"
                         # NOTE: very naive since we're scaling text proportionally
                         font_size = (
-                            float(final_cell_style.get("font-size", f"{FONT_SIZE_PT}pt")[:-2])
-                            / FONT_SIZE_PT
-                            * FONT_SIZE
+                            float(final_cell_style.get("font-size", f"{self.font_size_pt}pt")[:-2])
+                            / self.font_size_pt
+                            * self.font_size_px
                         )
 
                         if p_tags:
@@ -523,10 +540,7 @@ class Scheduler:
         """
         text_lines = [str(p) for p in p_tags]
         box_alignment_params = SvgWriter.get_box_alignment_parameters(box_alignment)
-        text_params = {
-            "font-size": font_size,
-            "font-family": FONT_FAMILY,
-        }
+        text_params = {"font-size": font_size}
         if bold:
             text_params["font-weight"] = "bold"
         if italic:
@@ -546,13 +560,13 @@ class Scheduler:
 
         text_tag = self.svg.text("", **(text_params | {"font-size": "0"} | box_alignment_params))
 
-        # TODO: should be done in less naive way
-        # without using magic number for FONT_WIDTH
-        # currently it might not work for all fonts and font sizes
+        # TODO: Should be done without using magic number for self.font_width 
         if wrap_text:
             wrapped_lines = []
             for line in text_lines:
-                wrapped_line = wrap(line, width=int(cell_width // FONT_WIDTH(font_size)), break_long_words=False)
+                wrapped_line = wrap(
+                    line, width=int(cell_width // (font_size * self.font_width)), break_long_words=False
+                )
                 wrapped_lines.extend(wrapped_line)
         else:
             wrapped_lines = text_lines

src/blenderbim/blenderbim/bim/module/geometry/__init__.py

@@ -29,6 +29,7 @@ classes = (
     operator.GetRepresentationIfcParameters,
     operator.DuplicateMoveLinkedAggregate,
     operator.DuplicateMoveLinkedAggregateMacro,
+    operator.DuplicateLinkedAggregateTo3dCursor,
     operator.OverrideDelete,
     operator.OverrideDuplicateMove,
     operator.OverrideDuplicateMoveLinked,

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

@@ -400,7 +400,11 @@ class UpdateRepresentation(bpy.types.Operator, Operator):
             representation_data["profile_set_usage"] = tool.Geometry.get_profile_set_usage(product)
             representation_data["text_literal"] = tool.Geometry.get_text_literal(old_representation)
 
+        # TODO: replace with core.add_representation?
         new_representation = ifcopenshell.api.run("geometry.add_representation", self.file, **representation_data)
+        if new_representation is None:
+            self.report({"ERROR"}, "Error creating representation for Blender object.")
+            return {"CANCELLED"}
 
         if tool.Geometry.is_body_representation(new_representation):
             [
@@ -938,7 +942,7 @@ class OverrideDuplicateMove(bpy.types.Operator):
             pset = ifcopenshell.util.element.get_pset(new[0], "BBIM_Linked_Aggregate")
             if pset:
                 pset = tool.Ifc.get().by_id(pset["id"])
-                ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+                ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=new[0],pset=pset)
 
             if new[0].is_a("IfcElementAssembly"):
                 linked_aggregate_group = [
@@ -973,15 +977,15 @@ class OverrideDuplicateMoveLinked(bpy.types.Operator):
 
 
 class DuplicateMoveLinkedAggregateMacro(bpy.types.Macro):
-    bl_description = "Create a new linked aggregate"
+    bl_description = "Create and move a new linked aggregate"
     bl_idname = "bim.object_duplicate_move_linked_aggregate_macro"
-    bl_label = "IFC Duplicate Linked Aggregate"
+    bl_label = "IFC Duplicate and Move Linked Aggregate"
     bl_options = {"REGISTER", "UNDO"}
 
 
 class DuplicateMoveLinkedAggregate(bpy.types.Operator):
     bl_idname = "bim.object_duplicate_move_linked_aggregate"
-    bl_label = "IFC Duplicate Linked Aggregate"
+    bl_label = "IFC Duplicate and Move Linked Aggregate"
     bl_options = {"REGISTER", "UNDO"}
     is_interactive: bpy.props.BoolProperty(name="Is Interactive", default=True)
 
@@ -996,7 +1000,7 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
         return DuplicateMoveLinkedAggregate.execute_ifc_duplicate_linked_aggregate_operator(self, context)
 
     @staticmethod
-    def execute_ifc_duplicate_linked_aggregate_operator(self, context):
+    def execute_ifc_duplicate_linked_aggregate_operator(self, context, location_from_3d_cursor=False):
         self.new_active_obj = None
         self.group_name = "BBIM_Linked_Aggregate"
         self.pset_name = "BBIM_Linked_Aggregate"
@@ -1050,7 +1054,7 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
             if self.group_name in product_groups_name:
                 return
 
-            linked_aggregate_group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), Name=self.group_name)
+            linked_aggregate_group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), name=self.group_name)
             ifcopenshell.api.run("group.assign_group", tool.Ifc.get(), products=[element], group=linked_aggregate_group)
 
         def custom_incremental_naming_for_element_assembly(old_to_new):
@@ -1109,6 +1113,16 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
                     ]
                     tool.Ifc.run("group.assign_group", group=linked_aggregate_group[0], products=new)
 
+        def get_location_from_3d_cursor(old_to_new, aggregate):
+            base_obj = tool.Ifc.get_object(aggregate)
+            base_obj_location = base_obj.location.copy()
+
+            for new in old_to_new.values():
+                new_obj = tool.Ifc.get_object(new[0])
+                location_diff = new_obj.location - base_obj_location
+                new_obj.location = context.scene.cursor.location + location_diff
+
+
         if len(context.selected_objects) != 1:
             return {"FINISHED"}
 
@@ -1135,11 +1149,29 @@ class DuplicateMoveLinkedAggregate(bpy.types.Operator):
 
         custom_incremental_naming_for_element_assembly(old_to_new)
 
+        if location_from_3d_cursor:
+            get_location_from_3d_cursor(old_to_new, selected_element)
+
         blenderbim.bim.handler.refresh_ui_data()
 
         return old_to_new
 
 
+class DuplicateLinkedAggregateTo3dCursor(bpy.types.Operator):
+    bl_idname = "bim.duplicate_linked_aggregate_to_3d_cursor"
+    bl_label = "IFC Duplicate Linked Aggregate to 3d Cursor"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return len(context.selected_objects) > 0
+
+    def execute(self, context):
+        return OverrideDuplicateMove.execute_duplicate_operator(self, context, linked=False)
+
+    def _execute(self, context):
+        return DuplicateMoveLinkedAggregate.execute_ifc_duplicate_linked_aggregate_operator(self, context, location_from_3d_cursor=True)
+
 class RefreshLinkedAggregate(bpy.types.Operator):
     bl_idname = "bim.refresh_linked_aggregate"
     bl_label = "IFC Refresh Linked Aggregate"

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

@@ -36,31 +36,17 @@ class MaterialsData:
 
     @classmethod
     def load(cls):
-        cls.data = {
-            "total_materials": cls.total_materials(),
-            "material_types": cls.material_types(),
-            "profiles": cls.profiles(),
-            "styles": cls.styles(),
-            "contexts": cls.contexts(),
-            "active_styles": cls.active_styles(),
-        }
         cls.is_loaded = True
+        cls.data["material_types"] = cls.material_types()
+        cls.data["total_materials"] = cls.total_materials()
+        cls.data["profiles"] = cls.profiles()
+        cls.data["styles"] = cls.styles()
+        cls.data["contexts"] = cls.contexts()
+        cls.data["active_styles"] = cls.active_styles()
 
     @classmethod
     def total_materials(cls):
-        if tool.Ifc.get_schema() == "IFC2X3":
-            return (
-                len(tool.Ifc.get().by_type("IfcMaterial"))
-                + len(tool.Ifc.get().by_type("IfcMaterialLayerSet"))
-                + len(tool.Ifc.get().by_type("IfcMaterialList"))
-            )
-        return (
-            len(tool.Ifc.get().by_type("IfcMaterial"))
-            + len(tool.Ifc.get().by_type("IfcMaterialConstituentSet"))
-            + len(tool.Ifc.get().by_type("IfcMaterialLayerSet"))
-            + len(tool.Ifc.get().by_type("IfcMaterialProfileSet"))
-            + len(tool.Ifc.get().by_type("IfcMaterialList"))
-        )
+        return len(tool.Ifc.get().by_type(bpy.context.scene.BIMMaterialProperties.material_type))
 
     @classmethod
     def material_types(cls):

src/blenderbim/blenderbim/bim/module/material/prop.py

@@ -97,6 +97,10 @@ def get_material_types(self, context):
     return MaterialsData.data["material_types"]
 
 
+def update_material_type(self, context):
+    MaterialsData.data["total_materials"] = MaterialsData.total_materials()
+
+
 def get_profiles(self, context):
     if not MaterialsData.is_loaded:
         MaterialsData.load()
@@ -126,7 +130,7 @@ class Material(PropertyGroup):
 
 class BIMMaterialProperties(PropertyGroup):
     is_editing: BoolProperty(name="Is Editing", default=False)
-    material_type: EnumProperty(items=get_material_types, name="Material Type")
+    material_type: EnumProperty(items=get_material_types, update=update_material_type, name="Material Type")
     materials: CollectionProperty(name="Materials", type=Material)
     active_material_index: IntProperty(name="Active Material Index")
     profiles: EnumProperty(items=get_profiles, name="Profiles")

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

@@ -45,7 +45,7 @@ class BIM_PT_materials(Panel):
         self.props = context.scene.BIMMaterialProperties
 
         row = self.layout.row(align=True)
-        row.label(text="{} Materials".format(MaterialsData.data["total_materials"]), icon="NODE_MATERIAL")
+        row.label(text=f"{MaterialsData.data['total_materials']} Materials", icon="NODE_MATERIAL")
         if self.props.is_editing:
             row.operator("bim.disable_editing_materials", text="", icon="CANCEL")
         else:

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

@@ -23,6 +23,7 @@ import blenderbim.bim.handler
 import blenderbim.tool as tool
 import blenderbim.core.misc as core
 import blenderbim.core.geometry as core_geometry
+import blenderbim.core.root
 from blenderbim.bim.ifc import IfcStore
 from mathutils import Vector, Matrix, Euler
 
@@ -134,6 +135,10 @@ class ResizeToStorey(bpy.types.Operator, Operator):
 class SplitAlongEdge(bpy.types.Operator, Operator):
     bl_idname = "bim.split_along_edge"
     bl_label = "Split Along Edge"
+    bl_description = (
+        "Active object is considered to be a cutting object."
+        "Will unassign element from a type if type has a representation."
+    )
     bl_options = {"REGISTER", "UNDO"}
 
     @classmethod
@@ -144,16 +149,25 @@ class SplitAlongEdge(bpy.types.Operator, Operator):
         cutter = context.active_object
         objs = [o for o in context.selected_objects if o != cutter]
 
+        objs_to_cut = []
         # Splitting only works on meshes
         for obj in objs:
             # You cannot split meshes if the representation is mapped.
             element = tool.Ifc.get_entity(obj)
-            if element:
-                relating_type = tool.Root.get_element_type(element)
-                if relating_type and tool.Root.does_type_have_representations(relating_type):
-                    bpy.ops.bim.unassign_type(related_object=obj.name)
+            if not element:
+                continue
 
+            relating_type = tool.Root.get_element_type(element)
+            if relating_type and tool.Root.does_type_have_representations(relating_type):
+                bpy.ops.bim.unassign_type(related_object=obj.name)
+
+            # refresh representation
             representation = tool.Geometry.get_active_representation(obj)
+
+            # skip empty objects that might get in the way
+            if not representation:
+                continue
+
             core_geometry.switch_representation(
                 tool.Ifc,
                 tool.Geometry,
@@ -168,11 +182,13 @@ class SplitAlongEdge(bpy.types.Operator, Operator):
             if not tool.Geometry.is_meshlike(representation):
                 bpy.ops.bim.update_representation(obj=obj.name, ifc_representation_class="IfcTessellatedFaceSet")
 
-        new_objs = tool.Misc.split_objects_with_cutter(objs, cutter)
+            objs_to_cut.append(obj)
+
+        new_objs = tool.Misc.split_objects_with_cutter(objs_to_cut, cutter)
         for obj in new_objs:
             blenderbim.core.root.copy_class(tool.Ifc, tool.Collector, tool.Geometry, tool.Root, obj=obj)
             bpy.ops.bim.update_representation(obj=obj.name)
-        for obj in objs:
+        for obj in objs_to_cut:
             bpy.ops.bim.update_representation(obj=obj.name)
 
             representation = tool.Geometry.get_active_representation(obj)
@@ -187,6 +203,8 @@ class SplitAlongEdge(bpy.types.Operator, Operator):
                 apply_openings=True,
             )
 
+        self.report({"INFO"}, f"Splitting finished, {len(new_objs)} new objects created.")
+
 
 class GetConnectedSystemElements(bpy.types.Operator, Operator):
     bl_idname = "bim.get_connected_system_elements"

src/blenderbim/blenderbim/bim/module/model/array.py

@@ -83,17 +83,8 @@ class EnableEditingArray(bpy.types.Operator, tool.Ifc.Operator):
     def _execute(self, context):
         obj = context.active_object
         element = tool.Ifc.get_entity(obj)
+        data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Data"))[self.item]
         props = obj.BIMArrayProperties
-        
-        relating_obj = props.relating_array_object
-        
-        if relating_obj:
-            element = tool.Ifc.get_entity(relating_obj)
-            parent_globalid = ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Parent")
-            parent_element = tool.Ifc.get().by_guid(parent_globalid)
-            data = json.loads(ifcopenshell.util.element.get_pset(parent_element, "BBIM_Array", "Data"))[self.item]
-        else:
-            data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Data"))[self.item]
         props.count = data["count"]
         si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
         props.x = data["x"] * si_conversion
@@ -102,9 +93,7 @@ class EnableEditingArray(bpy.types.Operator, tool.Ifc.Operator):
         props.use_local_space = data.get("use_local_space", False)
         props.sync_children = data.get("sync_children", False)
         props.method = data.get("method", "OFFSET")
-        
         props.is_editing = self.item
-        
         return {"FINISHED"}
 
 
@@ -148,10 +137,6 @@ class EditArray(bpy.types.Operator, tool.Ifc.Operator):
 
         tool.Blender.Modifier.Array.set_children_lock_state(element, self.item, True)
         tool.Blender.Modifier.Array.constrain_children_to_parent(element)
-
-        #clears the relating_array_object so it doesn't show again next time
-        props.relating_array_object = None
-        
         return {"FINISHED"}
 
 
@@ -208,7 +193,7 @@ class RemoveArray(bpy.types.Operator, tool.Ifc.Operator):
 
         pset = tool.Ifc.get().by_id(pset["id"])
         if len(data) == 1:
-            ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+            ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
         else:
             del data[self.item]
             data = tool.Ifc.get().createIfcText(json.dumps(data))

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

@@ -53,7 +53,7 @@ class AuthoringData:
         cls.data["ifc_element_type"] = cls.ifc_element_type
         cls.data["ifc_classes"] = cls.ifc_classes()
         cls.data["relating_type_id"] = cls.relating_type_id()  # only after .ifc_classes()
-        cls.data["predefined_type"] = cls.predefined_type()
+        cls.data["predefined_type"] = cls.predefined_type() # only after .relating_type_id()
         cls.data["type_class"] = cls.type_class()
 
         # only after .type_class()
@@ -121,9 +121,10 @@ class AuthoringData:
     def type_thumbnail(cls):
         if not cls.data["relating_type_id"]:
             return 0
-        if not tool.Blender.enum_property_has_valid_index(cls.props, "relating_type_id", cls.data["relating_type_id"]):
+        relating_type_id = tool.Blender.get_enum_safe(cls.props, "relating_type_id")
+        if relating_type_id is None:
             return 0
-        element = tool.Ifc.get().by_id(int(cls.props.relating_type_id))
+        element = tool.Ifc.get().by_id(int(relating_type_id))
         return cls.type_thumbnails.get(element.id(), None) or 0
 
     @classmethod
@@ -251,8 +252,8 @@ class AuthoringData:
 
     @classmethod
     def predefined_type(cls):
-        relating_type_id = cls.props.relating_type_id
-        if not relating_type_id:
+        relating_type_id = tool.Blender.get_enum_safe(cls.props, "relating_type_id")
+        if relating_type_id is None:
             return
         relating_type = tool.Ifc.get().by_id(int(relating_type_id))
         if not hasattr(relating_type, "PredefinedType"):

src/blenderbim/blenderbim/bim/module/model/door.py

@@ -22,20 +22,24 @@ import bmesh
 from bmesh.types import BMVert, BMFace
 
 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.element
+import ifcopenshell.util.representation
 from ifcopenshell.util.shape_builder import V
 import blenderbim
 import blenderbim.tool as tool
+import blenderbim.core.geometry
 import blenderbim.core.geometry as core
-from blenderbim.bim.module.model.window import create_bm_window, create_bm_box, update_simple_openings
+import blenderbim.core.root
+from blenderbim.bim.module.model.window import create_bm_window, create_bm_box
 
 from mathutils import Vector, Matrix
-from pprint import pprint
 
 import json
 import collections
 
 
-def update_door_modifier_representation(context, obj):
+def update_door_modifier_representation(context: bpy.types.Context, obj: bpy.types.Object) -> None:
     props = obj.BIMDoorProperties
     element = tool.Ifc.get_entity(obj)
     ifc_file = tool.Ifc.get()
@@ -159,7 +163,7 @@ def update_door_modifier_representation(context, obj):
         occurrence.OverallWidth = props.overall_width / si_conversion
         occurrence.OverallHeight = props.overall_height / si_conversion
 
-    update_simple_openings(element, props.overall_width / si_conversion, props.overall_height / si_conversion)
+    tool.Model.update_simple_openings(element)
 
 
 # TODO: move it out to tools
@@ -644,6 +648,6 @@ class RemoveDoor(bpy.types.Operator, tool.Ifc.Operator):
         obj.BIMDoorProperties.is_editing = False
 
         pset = tool.Pset.get_element_pset(element, "BBIM_Door")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
 
         return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/model/opening.py

@@ -44,6 +44,7 @@ from bpy.types import SpaceView3D
 from bpy.props import FloatProperty
 from bpy_extras.object_utils import AddObjectHelper, object_data_add
 from gpu_extras.batch import batch_for_shader
+from typing import Union, Optional, Any
 
 
 class AddFilledOpening(bpy.types.Operator, tool.Ifc.Operator):
@@ -59,9 +60,15 @@ class AddFilledOpening(bpy.types.Operator, tool.Ifc.Operator):
 
 
 class FilledOpeningGenerator:
-    def generate(self, filling_obj, voided_obj, target=None):
+    def generate(
+        self,
+        filling_obj: Union[bpy.types.Object, None],
+        voided_obj: Union[bpy.types.Object, None],
+        target: Optional[Vector] = None,
+    ) -> None:
         props = bpy.context.scene.BIMModelProperties
         unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
+        opening_thickness_si = 0.0
 
         filling = tool.Ifc.get_entity(filling_obj)
         element = tool.Ifc.get_entity(voided_obj)
@@ -92,6 +99,7 @@ class FilledOpeningGenerator:
             # In this prototype, we assume openings are only added to axis-based elements
             layers = tool.Model.get_material_layer_parameters(element)
             if layers["layer_set_direction"] == "AXIS2":
+                opening_thickness_si = layers["thickness"] * 2
                 axis = tool.Model.get_wall_axis(voided_obj, layers=layers)["base"]
                 new_matrix = voided_obj.matrix_world.copy()
                 point_on_axis = tool.Cad.point_on_edge(target, axis)
@@ -122,44 +130,37 @@ class FilledOpeningGenerator:
 
         existing_opening_occurrence = self.get_existing_opening_occurrence_if_any(filling)
 
-        if existing_opening_occurrence:
-            opening = ifcopenshell.api.run(
-                "root.create_entity",
-                tool.Ifc.get(),
-                ifc_class="IfcOpeningElement",
-                predefined_type="OPENING",
-                name="Opening",
-            )
-            ifcopenshell.api.run(
-                "geometry.edit_object_placement", tool.Ifc.get(), product=opening, matrix=filling_obj.matrix_world
-            )
+        opening = ifcopenshell.api.run(
+            "root.create_entity",
+            tool.Ifc.get(),
+            ifc_class="IfcOpeningElement",
+            predefined_type="OPENING",
+            name="Opening",
+        )
+        ifcopenshell.api.run(
+            "geometry.edit_object_placement",
+            tool.Ifc.get(),
+            product=opening,
+            matrix=np.array(filling_obj.matrix_world),
+            is_si=True,
+        )
 
+        if existing_opening_occurrence:
             representation = ifcopenshell.util.representation.get_representation(
                 existing_opening_occurrence, "Model", "Body", "MODEL_VIEW"
             )
             representation = ifcopenshell.util.representation.resolve_representation(representation)
-            mapped_representation = ifcopenshell.api.run(
-                "geometry.map_representation", tool.Ifc.get(), representation=representation
-            )
-            ifcopenshell.api.run(
-                "geometry.assign_representation", tool.Ifc.get(), product=opening, representation=mapped_representation
-            )
         else:
-            representation = self.generate_opening_from_filling(filling, filling_obj)
-            opening = ifcopenshell.api.run(
-                "root.create_entity", tool.Ifc.get(), ifc_class="IfcOpeningElement", predefined_type="OPENING"
+            representation = self.generate_opening_from_filling(
+                filling, filling_obj, opening_thickness_si=opening_thickness_si
             )
 
-            matrix = np.array(filling_obj.matrix_world)
-            ifcopenshell.api.run(
-                "geometry.edit_object_placement", tool.Ifc.get(), product=opening, matrix=matrix, is_si=True
-            )
-            mapped_representation = ifcopenshell.api.run(
-                "geometry.map_representation", tool.Ifc.get(), representation=representation
-            )
-            ifcopenshell.api.run(
-                "geometry.assign_representation", tool.Ifc.get(), product=opening, representation=mapped_representation
-            )
+        mapped_representation = ifcopenshell.api.run(
+            "geometry.map_representation", tool.Ifc.get(), representation=representation
+        )
+        ifcopenshell.api.run(
+            "geometry.assign_representation", tool.Ifc.get(), product=opening, representation=mapped_representation
+        )
 
         ifcopenshell.api.run("void.add_opening", tool.Ifc.get(), opening=opening, element=element)
         ifcopenshell.api.run("void.add_filling", tool.Ifc.get(), opening=opening, element=filling)
@@ -187,7 +188,7 @@ class FilledOpeningGenerator:
                     should_sync_changes_first=False,
                 )
 
-    def regenerate_from_type(self, usecase_path, ifc_file, settings):
+    def regenerate_from_type(self, usecase_path: str, ifc_file: ifcopenshell.file, settings: dict[str, Any]) -> None:
         relating_type = settings["relating_type"]
 
         for related_object in settings["related_objects"]:
@@ -252,10 +253,15 @@ class FilledOpeningGenerator:
                 should_sync_changes_first=False,
             )
 
-    def generate_opening_from_filling(self, filling, filling_obj):
+    def generate_opening_from_filling(
+        self,
+        filling: ifcopenshell.entity_instance,
+        filling_obj: bpy.types.Object,
+        opening_thickness_si: float = 0.0,
+    ) -> ifcopenshell.entity_instance:
         # Since openings are reused later, we give a default thickness of 1.2m
         # which should cover the majority of curved, or super thick walls.
-        thickness = 1.2
+        thickness = max(1.2, opening_thickness_si)
         unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
         shape_builder = ifcopenshell.util.shape_builder.ShapeBuilder(tool.Ifc.get())
 
@@ -346,7 +352,9 @@ class FilledOpeningGenerator:
                 return True
         return False
 
-    def get_existing_opening_occurrence_if_any(self, filling):
+    def get_existing_opening_occurrence_if_any(
+        self, filling: ifcopenshell.entity_instance
+    ) -> Union[ifcopenshell.entity_instance, None]:
         filling_type = ifcopenshell.util.element.get_type(filling)
         if filling_type:
             filling_occurrences = ifcopenshell.util.element.get_types(filling_type)

src/blenderbim/blenderbim/bim/module/model/product.py

@@ -138,7 +138,10 @@ class AddConstrTypeInstance(bpy.types.Operator):
         if not relating_type_id:
             return {"FINISHED"}
 
-        if self.from_invoke:
+        # Check relating_type_id enum_items since it's possible
+        # that we're adding e.g. IfcRoofType being in a Slab Tool
+        # and roof type id won't be present in the relating_type_id enum.
+        if self.from_invoke and str(self.relating_type_id) in AuthoringData.data["relating_type_id"]:
             props.relating_type_id = str(self.relating_type_id)
 
         relating_type = tool.Ifc.get().by_id(int(relating_type_id))

src/blenderbim/blenderbim/bim/module/model/profile.py

@@ -94,7 +94,6 @@ class DumbProfileGenerator:
             obj=obj,
             ifc_class=ifc_class,
             should_add_representation=False,
-            context=self.body_context,
         )
         ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element], relating_type=self.relating_type)
 
@@ -931,13 +930,11 @@ class PatchNonParametricMepSegment(bpy.types.Operator, tool.Ifc.Operator):
         return context.active_object
 
     def _execute(self, context):
-        styles = tool.Geometry.get_styles(context.active_object)
         blenderbim.core.material.patch_non_parametric_mep_segment(
             tool.Ifc, tool.Material, tool.Profile, obj=context.active_object
         )
         bpy.ops.bim.enable_editing_extrusion_axis()
         bpy.ops.bim.edit_extrusion_axis()
-        styles = tool.Geometry.get_styles(context.active_object)
 
 
 class EnableEditingExtrusionAxis(bpy.types.Operator, tool.Ifc.Operator):

src/blenderbim/blenderbim/bim/module/model/prop.py

@@ -60,7 +60,7 @@ def update_ifc_class(self, context):
     bpy.ops.bim.load_type_thumbnails(ifc_class=self.ifc_class)
     AuthoringData.data["relating_type_id"] = AuthoringData.relating_type_id()
     AuthoringData.data["type_thumbnail"] = AuthoringData.type_thumbnail()
-    if not tool.Blender.enum_property_has_valid_index(self, "relating_type_id", AuthoringData.data["relating_type_id"]):
+    if tool.Blender.get_enum_safe(self, "relating_type_id") is None:
         self["relating_type_id"] = 0
 
 
@@ -87,21 +87,6 @@ def update_type_page(self, context):
     AuthoringData.data["paginated_relating_types"] = AuthoringData.paginated_relating_types()
 
 
-def update_relating_array_from_object(self, context):
-    bpy.ops.bim.enable_editing_array(item=self.is_editing)
-    return
-
-
-def is_object_array_applicable(self, obj):
-    element = tool.Ifc.get_entity(obj)
-    if not element:
-        return False
-    return ifcopenshell.util.element.get_pset(element, "BBIM_Array")
-
-
-
-
-
 class BIMModelProperties(PropertyGroup):
     ifc_class: bpy.props.EnumProperty(items=get_ifc_class, name="Construction Class", update=update_ifc_class)
     relating_type_id: bpy.props.EnumProperty(
@@ -218,14 +203,6 @@ class BIMArrayProperties(PropertyGroup):
         description="Regenerate all children based on the parent object",
         default=False,
     )
-    relating_array_object: bpy.props.PointerProperty(
-        type=bpy.types.Object,
-        name="Copy Array Properties",
-        update=update_relating_array_from_object,
-        poll=is_object_array_applicable,
-    )
-
-
 
 
 class BIMStairProperties(PropertyGroup):

src/blenderbim/blenderbim/bim/module/model/railing.py

@@ -20,8 +20,12 @@
 import bpy
 import bmesh
 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.representation
+import ifcopenshell.util.unit
 from ifcopenshell.util.shape_builder import V
 import blenderbim
+import blenderbim.core.root
 import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.model.door import bm_sort_out_geom
@@ -535,5 +539,5 @@ class RemoveRailing(bpy.types.Operator, tool.Ifc.Operator):
         obj.BIMRailingProperties.is_editing = False
 
         pset = tool.Pset.get_element_pset(element, "BBIM_Railing")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
         return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/model/roof.py

@@ -20,7 +20,11 @@ import bpy
 import bmesh
 
 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.representation
+import ifcopenshell.util.unit
 import blenderbim
+import blenderbim.core.root
 import blenderbim.tool as tool
 from blenderbim.bim.helper import convert_property_group_from_si
 from blenderbim.bim.module.model.door import bm_sort_out_geom
@@ -757,7 +761,7 @@ class RemoveRoof(bpy.types.Operator, tool.Ifc.Operator):
         obj.BIMRoofProperties.is_editing = False
 
         pset = tool.Pset.get_element_pset(element, "BBIM_Roof")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
         return {"FINISHED"}
 
 

src/blenderbim/blenderbim/bim/module/model/slab.py

@@ -176,7 +176,6 @@ class DumbSlabGenerator:
             obj=obj,
             ifc_class=ifc_class,
             should_add_representation=False,
-            context=self.body_context,
         )
         ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element], relating_type=self.relating_type)
 

src/blenderbim/blenderbim/bim/module/model/stair.py

@@ -20,7 +20,11 @@ import bpy
 import json
 import bmesh
 import ifcopenshell
+import ifcopenshell.api
+import ifcopenshell.util.representation
+import ifcopenshell.util.unit
 import blenderbim
+import blenderbim.core.root
 import blenderbim.tool as tool
 from mathutils import Vector
 from bmesh.types import BMVert
@@ -217,7 +221,6 @@ class BIM_OT_add_clever_stair(bpy.types.Operator, tool.Ifc.Operator):
         collection = context.view_layer.active_layer_collection.collection
         collection.objects.link(obj)
 
-        body_context = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
         element = blenderbim.core.root.assign_class(
             tool.Ifc,
             tool.Collector,
@@ -225,7 +228,6 @@ class BIM_OT_add_clever_stair(bpy.types.Operator, tool.Ifc.Operator):
             obj=obj,
             ifc_class="IfcStairFlight",
             should_add_representation=False,
-            context=body_context,
         )
         if tool.Ifc.get_schema() != "IFC2X3":
             element.PredefinedType = "STRAIGHT"
@@ -337,6 +339,6 @@ class RemoveStair(bpy.types.Operator, tool.Ifc.Operator):
         obj.BIMStairProperties.is_editing = False
 
         pset = tool.Pset.get_element_pset(element, "BBIM_Stair")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
 
         return {"FINISHED"}

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

@@ -223,8 +223,6 @@ class BIM_PT_array(bpy.types.Panel):
                     row = col.row(align=True)
                     row.prop(props, "z")
                     row.operator("bim.input_cursor_z_array", icon="CURSOR", text="")
-                    row = col.row(align=True)
-                    row.prop(props, "relating_array_object", icon="COPYDOWN")
                 else:
                     row = box.row(align=True)
                     name = f"{array['count']} Items ({array.get('method', 'OFFSET').capitalize()})"

src/blenderbim/blenderbim/bim/module/model/wall.py

@@ -607,7 +607,6 @@ class DumbWallGenerator:
             obj=obj,
             ifc_class=ifc_class,
             should_add_representation=False,
-            context=self.body_context,
         )
         ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element], relating_type=self.relating_type)
         if self.axis_context:

src/blenderbim/blenderbim/bim/module/model/window.py

@@ -26,66 +26,16 @@ import blenderbim.tool as tool
 import blenderbim.core.root
 import blenderbim.core.geometry
 from ifcopenshell.api.geometry.add_window_representation import DEFAULT_PANEL_SCHEMAS
+import ifcopenshell.api
+import ifcopenshell.util.element
+import ifcopenshell.util.representation
+import ifcopenshell.util.shape_builder
+import ifcopenshell.util.unit
 from ifcopenshell.util.shape_builder import V
 from bmesh.types import BMVert
 from mathutils import Vector
 
 
-# TODO: move to some utils helpers/tool module
-def update_simple_openings(element, opening_width, opening_height):
-    ifc_file = tool.Ifc.get()
-    fillings = tool.Ifc.get_all_element_occurrences(element)
-
-    voided_objs = set()
-    has_replaced_opening_representation = False
-    for filling in fillings:
-        if not filling.FillsVoids:
-            continue
-
-        opening = filling.FillsVoids[0].RelatingOpeningElement
-        voided_obj = tool.Ifc.get_object(opening.VoidsElements[0].RelatingBuildingElement)
-        voided_objs.add(voided_obj)
-
-        # we assume that the same element type (e.g. window)
-        # will be used only for voiding objects of the same thickness (by y-dimension)
-        # (e.g. all walls window's attached to will share the same thickness)
-        # If that's not the case it will some linings will be too thick or too thin
-        if has_replaced_opening_representation:
-            continue
-
-        old_representation = ifcopenshell.util.representation.get_representation(opening, "Model", "Body", "MODEL_VIEW")
-        old_representation = tool.Geometry.resolve_mapped_representation(old_representation)
-        ifcopenshell.api.run(
-            "geometry.unassign_representation", ifc_file, product=opening, representation=old_representation
-        )
-
-        thickness = voided_obj.dimensions[1] + 0.1 + 0.1
-        unit_scale = ifcopenshell.util.unit.calculate_unit_scale(ifc_file)
-        shape_builder = ifcopenshell.util.shape_builder.ShapeBuilder(ifc_file)
-        context = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
-
-        extrusion = shape_builder.extrude(
-            shape_builder.rectangle(size=Vector([opening_width, 0.0, opening_height]).xz),
-            magnitude=thickness / unit_scale,
-            position=Vector([0.0, -0.1 / unit_scale, 0.0]),
-            **shape_builder.extrude_kwargs("Y")
-        )
-
-        new_representation = shape_builder.get_representation(context, extrusion)
-
-        for inverse in ifc_file.get_inverse(old_representation):
-            ifcopenshell.util.element.replace_attribute(inverse, old_representation, new_representation)
-
-        ifcopenshell.api.run("geometry.remove_representation", ifc_file, representation=old_representation)
-
-        has_replaced_opening_representation = True
-
-    tool.Model.reload_body_representation(voided_objs)
-    if fillings:
-        with bpy.context.temp_override(selected_objects=[tool.Ifc.get_object(f) for f in fillings]):
-            bpy.ops.bim.recalculate_fill()
-
-
 def update_window_modifier_representation(context, obj):
     element = tool.Ifc.get_entity(obj)
     props = obj.BIMWindowProperties
@@ -175,7 +125,7 @@ def update_window_modifier_representation(context, obj):
         occurrence.OverallWidth = props.overall_width / si_conversion
         occurrence.OverallHeight = props.overall_height / si_conversion
 
-    update_simple_openings(element, props.overall_width / si_conversion, props.overall_height / si_conversion)
+    tool.Model.update_simple_openings(element)
 
 
 def create_bm_window_frame(bm, size: Vector, thickness: list, position: Vector = V(0, 0, 0).freeze()):
@@ -590,6 +540,6 @@ class RemoveWindow(bpy.types.Operator, tool.Ifc.Operator):
         obj.BIMWindowProperties.is_editing = False
 
         pset = tool.Pset.get_element_pset(element, "BBIM_Window")
-        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+        ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
 
         return {"FINISHED"}

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

@@ -36,8 +36,8 @@ classes = (
     operator.EnableCulling,
     operator.EnableEditingHeader,
     operator.ExportIFC,
+    operator.ExportIFCDeprecated,
     operator.FlipClippingPlane,
-    operator.ImportIFC,
     operator.LinkIfc,
     operator.LoadLink,
     operator.LoadLinkedProject,
@@ -97,7 +97,7 @@ def register():
         addon_keymaps.append((km, kmi))
 
         km = wm.keyconfigs.addon.keymaps.new(name="Window", space_type="EMPTY")
-        kmi = km.keymap_items.new("export_ifc.bim", "S", "PRESS", ctrl=True)
+        kmi = km.keymap_items.new("bim.save_project", "S", "PRESS", ctrl=True)
         kmi.properties.should_save_as = False
         addon_keymaps.append((km, kmi))
 

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

@@ -1106,8 +1106,8 @@ class ToggleLinkVisibility(bpy.types.Operator):
         ]
 
 
-class ExportIFC(bpy.types.Operator):
-    bl_idname = "export_ifc.bim"
+class ExportIFCBase:
+    bl_idname = "bim.save_project"
     bl_label = "Save IFC"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".ifc"
@@ -1224,14 +1224,20 @@ class ExportIFC(bpy.types.Operator):
         return "Save the IFC file.  Will save both .IFC/.BLEND files if synced together"
 
 
-class ImportIFC(bpy.types.Operator):
-    bl_idname = "import_ifc.bim"
-    bl_label = "Import IFC"
-    bl_options = {"REGISTER", "UNDO"}
+class ExportIFC(ExportIFCBase, bpy.types.Operator):
+    pass
+
+
+# TODO: remove as deprecated, better wait couple releases since
+# this operator is used for saving IFC files in user scripts.
+class ExportIFCDeprecated(ExportIFCBase, bpy.types.Operator):
+    bl_idname = "export_ifc.bim"
 
     def execute(self, context):
-        bpy.ops.bim.load_project("INVOKE_DEFAULT")
-        return {"FINISHED"}
+        msg = f"'{ExportIFCDeprecated.bl_idname}' operator name is deprecated, use '{ExportIFC.bl_idname}'."
+        self.report({"WARNING"}, msg)
+        print(msg)
+        return super().execute(context)
 
 
 class LoadLinkedProject(bpy.types.Operator):

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

@@ -68,9 +68,9 @@ def file_menu(self, context):
     op = self.layout.operator("bim.load_project", text="Open IFC Project", icon="FILEBROWSER")
     op.should_start_fresh_session = True
     self.layout.separator()
-    op = self.layout.operator("export_ifc.bim", icon="FILE_TICK", text="Save IFC Project")
+    op = self.layout.operator("bim.save_project", icon="FILE_TICK", text="Save IFC Project")
     op.should_save_as = False
-    op = self.layout.operator("export_ifc.bim", text="Save IFC Project As...")
+    op = self.layout.operator("bim.save_project", text="Save IFC Project As...")
     op.should_save_as = True
     self.layout.separator()
     self.layout.operator("bim.revert_project")

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

@@ -20,6 +20,7 @@ import bpy
 from . import ui, prop, operator
 
 classes = (
+    operator.AddProposedProp,
     operator.AddPset,
     operator.AddQto,
     operator.CopyPropertyToSelection,
@@ -39,14 +40,6 @@ classes = (
     prop.IfcPropertyEnumeratedValue,
     prop.IfcProperty,
     prop.PsetProperties,
-    prop.MaterialPsetProperties,
-    prop.MaterialSetPsetProperties,
-    prop.MaterialSetItemPsetProperties,
-    prop.TaskPsetProperties,
-    prop.ResourcePsetProperties,
-    prop.GroupPsetProperties,
-    prop.ProfilePsetProperties,
-    prop.WorkSchedulePsetProperties,
     prop.RenameProperties,
     prop.AddEditProperties,
     prop.DeletePsets,
@@ -71,14 +64,14 @@ classes = (
 
 def register():
     bpy.types.Object.PsetProperties = bpy.props.PointerProperty(type=prop.PsetProperties)
-    bpy.types.Object.MaterialSetPsetProperties = bpy.props.PointerProperty(type=prop.MaterialSetPsetProperties)
-    bpy.types.Object.MaterialSetItemPsetProperties = bpy.props.PointerProperty(type=prop.MaterialSetItemPsetProperties)
-    bpy.types.Material.PsetProperties = bpy.props.PointerProperty(type=prop.MaterialPsetProperties)
-    bpy.types.Scene.TaskPsetProperties = bpy.props.PointerProperty(type=prop.TaskPsetProperties)
-    bpy.types.Scene.ResourcePsetProperties = bpy.props.PointerProperty(type=prop.ResourcePsetProperties)
-    bpy.types.Scene.GroupPsetProperties = bpy.props.PointerProperty(type=prop.GroupPsetProperties)
-    bpy.types.Scene.ProfilePsetProperties = bpy.props.PointerProperty(type=prop.ProfilePsetProperties)
-    bpy.types.Scene.WorkSchedulePsetProperties = bpy.props.PointerProperty(type=prop.WorkSchedulePsetProperties)
+    bpy.types.Object.MaterialSetPsetProperties = bpy.props.PointerProperty(type=prop.PsetProperties)
+    bpy.types.Object.MaterialSetItemPsetProperties = bpy.props.PointerProperty(type=prop.PsetProperties)
+    bpy.types.Material.PsetProperties = bpy.props.PointerProperty(type=prop.PsetProperties)
+    bpy.types.Scene.TaskPsetProperties = bpy.props.PointerProperty(type=prop.PsetProperties)
+    bpy.types.Scene.ResourcePsetProperties = bpy.props.PointerProperty(type=prop.PsetProperties)
+    bpy.types.Scene.GroupPsetProperties = bpy.props.PointerProperty(type=prop.PsetProperties)
+    bpy.types.Scene.ProfilePsetProperties = bpy.props.PointerProperty(type=prop.PsetProperties)
+    bpy.types.Scene.WorkSchedulePsetProperties = bpy.props.PointerProperty(type=prop.PsetProperties)
     bpy.types.Scene.RenameProperties = bpy.props.CollectionProperty(type=prop.RenameProperties)
     bpy.types.Scene.AddEditProperties = bpy.props.CollectionProperty(type=prop.AddEditProperties)
     bpy.types.Scene.DeletePsets = bpy.props.CollectionProperty(type=prop.DeletePsets)

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

@@ -31,7 +31,6 @@ import blenderbim.core.qto as QtoCore
 import blenderbim.bim.module.pset.data
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.pset.qto_calculator import QtoCalculator
-from blenderbim.bim.module.pset.calc_quantity_function_mapper import mapper
 
 
 class Operator:
@@ -41,35 +40,15 @@ class Operator:
         return {"FINISHED"}
 
 
-def get_pset_props(context, obj, obj_type):
-    if obj_type == "Object":
-        return bpy.data.objects.get(obj).PsetProperties
-    elif obj_type == "Material":
-        return bpy.data.materials.get(obj).PsetProperties
-    elif obj_type == "MaterialSet":
-        return bpy.data.objects.get(obj).MaterialSetPsetProperties
-    elif obj_type == "MaterialSetItem":
-        return bpy.data.objects.get(obj).MaterialSetItemPsetProperties
-    elif obj_type == "Task":
-        return context.scene.TaskPsetProperties
-    elif obj_type == "Resource":
-        return context.scene.ResourcePsetProperties
-    elif obj_type == "Profile":
-        return context.scene.ProfilePsetProperties
-    elif obj_type == "WorkSchedule":
-        return context.scene.WorkSchedulePsetProperties
-    elif obj_type == "Group":
-        return context.scene.GroupPsetProperties
-
 class TogglePsetExpansion(bpy.types.Operator, Operator):
     bl_idname = "bim.toggle_pset_expansion"
     bl_label = "Toggle Pset Expansion"
     pset_id: bpy.props.IntProperty()
 
     def _execute(self, context):
-        blenderbim.bim.module.pset.data.is_expanded[
-            self.pset_id
-        ] = not blenderbim.bim.module.pset.data.is_expanded.setdefault(self.pset_id, True)
+        blenderbim.bim.module.pset.data.is_expanded[self.pset_id] = (
+            not blenderbim.bim.module.pset.data.is_expanded.setdefault(self.pset_id, True)
+        )
 
 
 class EnablePsetEditing(bpy.types.Operator):
@@ -83,160 +62,15 @@ class EnablePsetEditing(bpy.types.Operator):
     obj_type: bpy.props.StringProperty()
 
     def execute(self, context):
-        self.props = get_pset_props(context, self.obj, self.obj_type)
-        self.props.properties.clear()
-
         if self.pset_id:
             pset = tool.Ifc.get().by_id(self.pset_id)
-            self.props.active_pset_name = pset.Name
-            self.props.active_pset_type = ""
-            pset_template = blenderbim.bim.schema.ifc.psetqto.get_by_name(pset.Name)
+            self.pset_name = pset.Name
         else:
             pset = None
-            self.props.active_pset_name = self.pset_name
-            self.props.active_pset_type = self.pset_type
-            pset_template = blenderbim.bim.schema.ifc.psetqto.get_by_name(self.pset_name)
 
-        if pset_template:
-            self.load_from_pset_template(pset_template, pset)
-        else:
-            self.load_from_pset_data(pset)
-
-        self.props.active_pset_id = self.pset_id
+        core.enable_pset_editing(tool.Pset, pset, self.pset_name, self.pset_type, self.obj, self.obj_type)
         return {"FINISHED"}
 
-    def load_from_pset_template(self, pset_template, pset):
-        if pset:
-            data = ifcopenshell.util.element.get_property_definition(pset)
-            del data["id"]
-        else:
-            data = {}
-        for prop_template in pset_template.HasPropertyTemplates:
-            if not prop_template.is_a("IfcSimplePropertyTemplate"):
-                continue  # Other types not yet supported
-            if prop_template.TemplateType == "P_SINGLEVALUE":
-                self.load_single_value(pset_template, prop_template, data)
-            elif prop_template.TemplateType.startswith("Q_"):
-                self.load_single_value(pset_template, prop_template, data)
-            elif prop_template.TemplateType == "P_ENUMERATEDVALUE":
-                self.load_enumerated_value(prop_template, data)
-            else:
-                # NOTE: currently unsupported types:
-                # - P_BOUNDEDVALUE
-                # - P_LISTVALUE
-                # - P_REFERENCEVALUE
-                # - P_TABLEVALUE
-                pass
-
-    def load_single_value(self, pset_template, prop_template, data):
-        prop = self.props.properties.add()
-        prop.name = prop_template.Name
-        prop.value_type = "IfcPropertySingleValue"
-        metadata = prop.metadata
-        metadata.name = prop_template.Name
-        metadata.is_null = data.get(prop_template.Name, None) is None
-        metadata.is_optional = True
-        metadata.is_uri = prop_template.PrimaryMeasureType == "IfcURIReference"
-        metadata.has_calculator = bool(mapper.get(pset_template.Name, {}).get(prop_template.Name, None))
-        metadata.data_type = self.get_data_type(prop_template)
-
-        special_type = ""
-        if prop_template.PrimaryMeasureType in (
-            "IfcPositiveLengthMeasure",
-            "IfcLengthMeasure",
-        ) or prop_template.TemplateType == "Q_LENGTH":
-            special_type = "LENGTH"
-        elif prop_template.PrimaryMeasureType == "IfcAreaMeasure" or prop_template.TemplateType == "Q_AREA":
-            special_type = "AREA"
-        elif prop_template.PrimaryMeasureType == "IfcVolumeMeasure" or prop_template.TemplateType == "Q_VOLUME":
-            special_type = "VOLUME"
-        metadata.special_type = special_type
-
-        if metadata.data_type == "string":
-            metadata.string_value = "" if metadata.is_null else str(data[prop_template.Name])
-        elif metadata.data_type == "integer":
-            metadata.int_value = 0 if metadata.is_null else int(data[prop_template.Name])
-        elif metadata.data_type == "float":
-            metadata.float_value = 0.0 if metadata.is_null else float(data[prop_template.Name])
-        elif metadata.data_type == "boolean":
-            metadata.bool_value = False if metadata.is_null else bool(data[prop_template.Name])
-
-        metadata.ifc_class = pset_template.Name
-        blenderbim.bim.helper.add_attribute_description(metadata, prop_template)
-
-    def get_data_type(self, prop_template):
-        if prop_template.TemplateType in ["Q_LENGTH", "Q_AREA", "Q_VOLUME", "Q_WEIGHT", "Q_TIME"]:
-            return "float"
-        elif prop_template.TemplateType == "Q_COUNT":
-            return "integer"
-        return ifcopenshell.util.attribute.get_primitive_type(
-            IfcStore.get_schema().declaration_by_name(prop_template.PrimaryMeasureType or "IfcLabel")
-        )
-
-    def load_enumerated_value(self, prop_template, data):
-        enum_items = [v.wrappedValue for v in prop_template.Enumerators.EnumerationValues]
-        selected_enum_items = data.get(prop_template.Name, []) or []
-
-        prop = self.props.properties.add()
-        prop.name = prop_template.Name
-        prop.value_type = "IfcPropertyEnumeratedValue"
-        metadata = prop.metadata
-        metadata.name = prop_template.Name
-        metadata.is_null = data.get(prop_template.Name, None) is None
-        metadata.is_optional = True
-        metadata.is_uri = prop_template.PrimaryMeasureType == "IfcURIReference"
-
-        # Cute hack to abuse the metadata to find the Blender data_type
-        metadata.set_value(enum_items[0])
-        data_type = metadata.get_value_name()
-
-        for enum in enum_items:
-            new = prop.enumerated_value.enumerated_values.add()
-            setattr(new, data_type, enum)
-            new.is_selected = enum in selected_enum_items
-
-    def load_from_pset_data(self, pset):
-        props = []
-        if pset.is_a("IfcElementQuantity"):
-            props = pset.Quantities
-        elif pset.is_a("IfcPropertySet"):
-            props = pset.HasProperties
-        elif pset.is_a("IfcMaterialProperties") or pset.is_a("IfcProfileProperties"):
-            props = pset.Properties
-
-        for prop in props:
-            if prop.is_a("IfcPropertyEnumeratedValue"):
-                simple_prop = self.props.properties.add()
-                simple_prop.name = prop.Name
-                simple_prop.value_type = "IfcPropertyEnumeratedValue"
-                metadata = simple_prop.metadata
-                metadata.name = prop.Name
-                metadata.is_null = len(simple_prop.enumerated_value.enumerated_values) == 0
-                metadata.is_optional = True
-                metadata.set_value(prop.EnumerationReference.EnumerationValues[0].wrappedValue)
-
-                enum_items = [v.wrappedValue for v in prop.EnumerationReference.EnumerationValues]
-                selected_enum_items = [v.wrappedValue for v in prop.EnumerationValues]
-                data_type = metadata.get_value_name(display_only=True)
-
-                for enum in enum_items:
-                    new = simple_prop.enumerated_value.enumerated_values.add()
-                    setattr(new, data_type, enum)
-                    new.is_selected = enum in selected_enum_items
-            else:
-                if prop.is_a("IfcPropertySingleValue"):
-                    value = prop.NominalValue.wrappedValue if prop.NominalValue else None
-                elif prop.is_a("IfcPhysicalSimpleQuantity"):
-                    value = prop[3]
-                new_prop = self.props.properties.add()
-                new_prop.name = prop.Name
-                metadata = new_prop.metadata
-                metadata.set_value(value)
-                metadata.name = prop.Name
-                metadata.is_null = value is None
-                metadata.is_optional = True
-                metadata.set_value(metadata.get_value_default() if metadata.is_null else value)
-
 
 class DisablePsetEditing(bpy.types.Operator, Operator):
     bl_idname = "bim.disable_pset_editing"
@@ -246,7 +80,7 @@ class DisablePsetEditing(bpy.types.Operator, Operator):
     obj_type: bpy.props.StringProperty()
 
     def _execute(self, context):
-        props = get_pset_props(context, self.obj, self.obj_type)
+        props = tool.Pset.get_pset_props(self.obj, self.obj_type)
         if props.active_pset_id:
             pset = tool.Ifc.get().by_id(props.active_pset_id)
             ifc_definition_id = tool.Blender.get_obj_ifc_definition_id(self.obj, self.obj_type, context)
@@ -270,7 +104,7 @@ class EditPset(bpy.types.Operator, Operator):
 
     def _execute(self, context):
         self.file = IfcStore.get_file()
-        props = get_pset_props(context, self.obj, self.obj_type)
+        props = tool.Pset.get_pset_props(self.obj, self.obj_type)
         ifc_definition_id = tool.Blender.get_obj_ifc_definition_id(self.obj, self.obj_type, context)
         element = tool.Ifc.get().by_id(ifc_definition_id)
         properties = {}
@@ -310,6 +144,8 @@ class EditPset(bpy.types.Operator, Operator):
             for key, value in properties.items():
                 if isinstance(value, float):
                     properties[key] = round(value, 4)
+                elif not isinstance(value, int):
+                    properties[key] = 0
             ifcopenshell.api.run(
                 "pset.edit_qto",
                 self.file,
@@ -341,7 +177,7 @@ class RemovePset(bpy.types.Operator, Operator):
             objects = [self.obj]
         pset_name = tool.Ifc.get().by_id(self.pset_id).Name
         for obj in objects:
-            props = get_pset_props(context, obj, self.obj_type)
+            props = tool.Pset.get_pset_props(obj, self.obj_type)
             ifc_definition_id = tool.Blender.get_obj_ifc_definition_id(obj, self.obj_type, context)
             element = tool.Ifc.get().by_id(ifc_definition_id)
             pset = ifcopenshell.util.element.get_psets(element, should_inherit=False).get(pset_name, None)
@@ -372,11 +208,9 @@ class AddQto(bpy.types.Operator, Operator):
 
     def _execute(self, context):
         self.file = IfcStore.get_file()
-        props = get_pset_props(context, self.obj, self.obj_type)
-        ifc_definition_id = tool.Blender.get_obj_ifc_definition_id(self.obj, self.obj_type, context)
-        element = tool.Ifc.get().by_id(ifc_definition_id)
+        qto_name = tool.Pset.get_pset_name(self.obj, self.obj_type, pset_type="QTO")
         bpy.ops.bim.enable_pset_editing(
-            pset_id=0, pset_name=props.qto_name, pset_type="QTO", obj=self.obj, obj_type=self.obj_type
+            pset_id=0, pset_name=qto_name, pset_type="QTO", obj=self.obj, obj_type=self.obj_type
         )
 
 
@@ -634,3 +468,17 @@ class BIM_OT_bulk_remove_psets(bpy.types.Operator):
 
         self.report({"INFO"}, "Finished applying changes")
         return {"FINISHED"}
+
+
+class AddProposedProp(bpy.types.Operator):
+    bl_idname = "bim.add_proposed_prop"
+    bl_label = "Add Proposed Prop"
+    bl_options = {"REGISTER", "UNDO"}
+    obj: bpy.props.StringProperty()
+    obj_type: bpy.props.StringProperty()
+    prop_name: bpy.props.StringProperty()
+    prop_value: bpy.props.StringProperty()
+
+    def execute(self, context):
+        core.add_proposed_prop(tool.Pset, self.obj, self.obj_type, self.prop_name, self.prop_value)
+        return {"FINISHED"}

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

@@ -19,6 +19,7 @@
 import bpy
 import blenderbim.bim.schema
 import ifcopenshell
+import ifcopenshell.util.attribute
 import ifcopenshell.util.element
 import blenderbim.tool as tool
 from blenderbim.bim.prop import Attribute, StrProperty
@@ -58,6 +59,30 @@ def blender_formatted_enum_from_psets(psets):
 
 
 def get_pset_name(self, context):
+    pset_type = repr(self)
+    prop_type = pset_type.split(".")[-1]
+    results = []
+    if "bpy.data.objects" in pset_type:
+        if prop_type == "PsetProperties":
+            results = get_object_pset_name(self, context)
+        elif prop_type == "MaterialSetPsetProperties":
+            results = get_material_set_pset_names(self, context)
+        elif prop_type == "MaterialSetItemPsetProperties":
+            results = get_material_set_item_pset_names(self, context)
+    elif "bpy.data.materials" in pset_type:
+        results = get_material_pset_names(self, context)
+    elif prop_type == "ResourcePsetProperties":
+        results = get_resource_pset_names(self, context)
+    elif prop_type == "GroupPsetProperties":
+        results = get_group_pset_names(self, context)
+    elif prop_type == "ProfilePsetProperties":
+        results = get_profile_pset_names(self, context)
+    elif prop_type == "WorkSchedulePsetProperties":
+        results = get_work_schedule_pset_names(self, context)
+    return [("BBIM_CUSTOM", "Custom Pset", "Create a property set without using a template."), None] + results
+
+
+def get_object_pset_name(self, context):
     if not ObjectPsetsData.is_loaded:
         ObjectPsetsData.load()
     return ObjectPsetsData.data["pset_name"]
@@ -167,6 +192,21 @@ def get_work_schedule_pset_names(self, context):
 
 
 def get_qto_name(self, context):
+    pset_type = repr(self)
+    prop_type = pset_type.split(".")[-1]
+    if "bpy.data.objects" in pset_type:
+        if prop_type == "PsetProperties":
+            results = get_object_qto_name(self, context)
+    elif prop_type == "TaskPsetProperties":
+        results = get_task_qto_names(self, context)
+    elif prop_type == "ResourcePsetProperties":
+        results = get_resource_qto_names(self, context)
+    elif prop_type == "GroupPsetProperties":
+        results = get_group_qto_names(self, context)
+    return [("BBIM_CUSTOM", "Custom Qto", "Create a quantity set without using a template."), None] + results
+
+
+def get_object_qto_name(self, context):
     if not ObjectPsetsData.is_loaded:
         ObjectPsetsData.load()
     return ObjectPsetsData.data["qto_name"]
@@ -198,76 +238,14 @@ class IfcProperty(PropertyGroup):
 
 class PsetProperties(PropertyGroup):
     active_pset_id: IntProperty(name="Active Pset ID")
+    active_pset_has_template: BoolProperty(name="Active Pset Has Template")
     active_pset_name: StringProperty(name="Pset Name")
     active_pset_type: StringProperty(name="Active Pset Type")
     properties: CollectionProperty(name="Properties", type=IfcProperty)
     pset_name: EnumProperty(items=get_pset_name, name="Pset Name")
     qto_name: EnumProperty(items=get_qto_name, name="Qto Name")
-
-
-class MaterialPsetProperties(PropertyGroup):
-    active_pset_id: IntProperty(name="Active Pset ID")
-    active_pset_name: StringProperty(name="Pset Name")
-    active_pset_type: StringProperty(name="Active Pset Type")
-    properties: CollectionProperty(name="Properties", type=IfcProperty)
-    pset_name: EnumProperty(items=get_material_pset_names, name="Pset Name")
-
-
-class MaterialSetPsetProperties(PropertyGroup):
-    active_pset_id: IntProperty(name="Active Pset ID")
-    active_pset_name: StringProperty(name="Pset Name")
-    active_pset_type: StringProperty(name="Active Pset Type")
-    properties: CollectionProperty(name="Properties", type=IfcProperty)
-    pset_name: EnumProperty(items=get_material_set_pset_names, name="Pset Name")
-
-
-class MaterialSetItemPsetProperties(PropertyGroup):
-    active_pset_id: IntProperty(name="Active Pset ID")
-    active_pset_name: StringProperty(name="Pset Name")
-    active_pset_type: StringProperty(name="Active Pset Type")
-    properties: CollectionProperty(name="Properties", type=IfcProperty)
-    pset_name: EnumProperty(items=get_material_set_item_pset_names, name="Pset Name")
-
-
-class TaskPsetProperties(PropertyGroup):
-    active_pset_id: IntProperty(name="Active Pset ID")
-    active_pset_name: StringProperty(name="Pset Name")
-    active_pset_type: StringProperty(name="Active Pset Type")
-    properties: CollectionProperty(name="Properties", type=IfcProperty)
-    qto_name: EnumProperty(items=get_task_qto_names, name="Qto Name")
-
-
-class ResourcePsetProperties(PropertyGroup):
-    active_pset_id: IntProperty(name="Active Pset ID")
-    active_pset_name: StringProperty(name="Pset Name")
-    active_pset_type: StringProperty(name="Active Pset Type")
-    properties: CollectionProperty(name="Properties", type=IfcProperty)
-    pset_name: EnumProperty(items=get_resource_pset_names, name="Pset Name")
-    qto_name: EnumProperty(items=get_resource_qto_names, name="Qto Name")
-
-
-class GroupPsetProperties(PropertyGroup):
-    active_pset_id: IntProperty(name="Active Pset ID")
-    active_pset_name: StringProperty(name="Pset Name")
-    active_pset_type: StringProperty(name="Active Pset Type")
-    properties: CollectionProperty(name="Properties", type=IfcProperty)
-    pset_name: EnumProperty(items=get_group_pset_names, name="Pset Name")
-    qto_name: EnumProperty(items=get_group_qto_names, name="Qto Name")
-
-class ProfilePsetProperties(PropertyGroup):
-    active_pset_id: IntProperty(name="Active Pset ID")
-    active_pset_name: StringProperty(name="Pset Name")
-    active_pset_type: StringProperty(name="Active Pset Type")
-    properties: CollectionProperty(name="Properties", type=IfcProperty)
-    pset_name: EnumProperty(items=get_profile_pset_names, name="Pset Name")
-
-
-class WorkSchedulePsetProperties(PropertyGroup):
-    active_pset_id: IntProperty(name="Active Pset ID")
-    active_pset_name: StringProperty(name="Pset Name")
-    active_pset_type: StringProperty(name="Active Pset Type")
-    properties: CollectionProperty(name="Properties", type=IfcProperty)
-    pset_name: EnumProperty(items=get_work_schedule_pset_names, name="Pset Name")
+    prop_name: StringProperty(name="Property Name", default="MyProperty")
+    prop_value: StringProperty(name="Property Value", default="Some Value")
 
 
 class RenameProperties(PropertyGroup):

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

@@ -101,6 +101,7 @@ def draw_psetqto_ui(context, pset_id, pset, props, layout, obj_type, allow_remov
     if props.active_pset_id == pset_id:
         row.prop(props, "active_pset_name", icon="COPY_ID", text="")
         op = row.operator("bim.edit_pset", icon="CHECKMARK", text="")
+        op.pset_id = pset_id
         op.obj = obj_name
         op.obj_type = obj_type
         op = row.operator("bim.disable_pset_editing", icon="CANCEL", text="")
@@ -132,6 +133,16 @@ def draw_psetqto_ui(context, pset_id, pset, props, layout, obj_type, allow_remov
         if props.active_pset_id == pset_id:
             for prop in props.properties:
                 draw_psetqto_editable_ui(box, props, prop)
+
+            if not props.active_pset_has_template:
+                row = box.row(align=True)
+                row.prop(props, "prop_name", text="")
+                row.prop(props, "prop_value", text="")
+                op = row.operator("bim.add_proposed_prop", text="", icon="ADD")
+                op.obj = obj_name
+                op.obj_type = obj_type
+                op.prop_name = props.prop_name
+                op.prop_value = props.prop_value
         else:
             has_props_displayed = False
             for prop in pset["Properties"]:
@@ -143,7 +154,9 @@ def draw_psetqto_ui(context, pset_id, pset, props, layout, obj_type, allow_remov
                 row = box.row(align=True)
                 row.scale_y = 0.8
                 row.label(text=prop["Name"])
-                row.label(text=str(prop["NominalValue"]))
+                op = row.operator("bim.select_similar", text=str(prop["NominalValue"]), icon="NONE", emboss=False)
+                op.key = pset['Name']
+
             if not has_props_displayed:
                 row = box.row()
                 row.scale_y = 0.8

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

@@ -21,6 +21,7 @@ import bpy
 import pathlib
 import ifcopenshell
 import ifcopenshell.util.attribute
+import ifcopenshell.util.doc
 import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
 
@@ -36,10 +37,14 @@ class PsetTemplatesData:
     @classmethod
     def load(cls):
         cls.is_loaded = True
+        cls.data["pset_template_files"] = cls.pset_template_files()
+
+        # after pset_template_files
+        cls.data["pset_templates"] = cls.pset_templates()
+
+        # after pset_template_files because it loads IfcStore.pset_template_file
         cls.data["primary_measure_type"] = cls.primary_measure_type()
         cls.data["property_template_type"] = cls.property_template_type()
-        cls.data["pset_template_files"] = cls.pset_template_files()
-        cls.data["pset_templates"] = cls.pset_templates()
         cls.data["pset_template"] = cls.pset_template()
         cls.data["prop_templates"] = cls.prop_templates()
 

src/blenderbim/blenderbim/bim/module/pset_template/prop.py

@@ -190,4 +190,4 @@ class BIMPsetTemplateProperties(PropertyGroup):
     active_prop_template_id: IntProperty(name="Active Prop Template Id")
     active_pset_template: PointerProperty(type=PsetTemplate)
     active_prop_template: PointerProperty(type=PropTemplate)
-    new_template_filename: StringProperty("New TemplateFileName")
+    new_template_filename: StringProperty(name="New TemplateFileName")

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

@@ -19,6 +19,7 @@
 import bpy
 import blenderbim.tool as tool
 import ifcopenshell
+import ifcopenshell.util.resource
 
 
 def refresh():
@@ -28,7 +29,6 @@ def refresh():
 class ResourceData:
     data = {}
     is_loaded = False
-    cost_values = {}
 
     @classmethod
     def load(cls):
@@ -139,7 +139,7 @@ class ResourceData:
         return results
 
     @classmethod
-    def active_resource_ids(cls):
+    def active_resource_ids(cls) -> list[int]:
         obj = bpy.context.active_object
         element = tool.Ifc.get_entity(obj)
         if not element:

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

@@ -128,9 +128,9 @@ class ContractResource(bpy.types.Operator):
 class AssignResource(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.assign_resource"
     bl_label = "Assign Resource"
+    bl_description = "Assign resource to the selected objects"
     bl_options = {"REGISTER", "UNDO"}
     resource: bpy.props.IntProperty()
-    related_object: bpy.props.StringProperty()
 
     def _execute(self, context):
         core.assign_resource(tool.Ifc, tool.Spatial, resource=tool.Ifc.get().by_id(self.resource))
@@ -139,9 +139,9 @@ class AssignResource(bpy.types.Operator, tool.Ifc.Operator):
 class UnassignResource(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.unassign_resource"
     bl_label = "Unassign Resource"
+    bl_description = "Unassign resource from the selected objects"
     bl_options = {"REGISTER", "UNDO"}
     resource: bpy.props.IntProperty()
-    related_object: bpy.props.StringProperty()
 
     def _execute(self, context):
         core.unassign_resource(tool.Ifc, tool.Spatial, resource=tool.Ifc.get().by_id(self.resource))
@@ -328,7 +328,7 @@ class EditResourceQuantity(bpy.types.Operator, tool.Ifc.Operator):
 
 
 class ImportResources(bpy.types.Operator, tool.Ifc.Operator, ImportHelper):
-    bl_idname = "import_resources.bim"
+    bl_idname = "bim.import_resources"
     bl_label = "Import Resources"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".csv"

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

@@ -51,7 +51,7 @@ class BIM_PT_resources(Panel):
             row.operator("bim.disable_resource_editing_ui", text="", icon="CANCEL")
         else:
             row.operator("bim.load_resources", text="", icon="GREASEPENCIL")
-            row.operator("import_resources.bim", text="", icon="IMPORT")
+            row.operator("bim.import_resources", text="", icon="IMPORT")
         if not self.props.is_editing:
             return
 

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

@@ -20,6 +20,7 @@ import re
 import bpy
 import json
 import ifcopenshell
+import ifcopenshell.api
 import ifcopenshell.guid
 import ifcopenshell.util.element
 import ifcopenshell.util.selector
@@ -214,7 +215,7 @@ class SaveSearch(Operator, tool.Ifc.Operator):
             group = group[0]
             group.Description = description
         else:
-            group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), Name=self.name, Description=description)
+            group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), name=self.name, description=description)
         if results:
             ifcopenshell.api.run("group.assign_group", tool.Ifc.get(), products=list(results), group=group)
 
@@ -367,7 +368,7 @@ class SaveColourscheme(Operator, tool.Ifc.Operator):
             description = json.dumps(
                 {"type": "BBIM_Search", "colourscheme": colourscheme, "colourscheme_query": query}
             )
-            group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), Name=self.name, Description=description)
+            group = ifcopenshell.api.run("group.add_group", tool.Ifc.get(), name=self.name, description=description)
 
     def invoke(self, context, event):
         return context.window_manager.invoke_props_dialog(self)
@@ -634,12 +635,14 @@ class SelectSimilar(Operator, tool.Ifc.Operator):
     bl_label = "Select Similar"
     bl_options = {"REGISTER", "UNDO"}
 
+    key: bpy.props.StringProperty()
+
     def _execute(self, context):
         props = context.scene.BIMSearchProperties
         obj = context.active_object
         element = tool.Ifc.get_entity(obj)
-        key = props.element_key
-        if props.element_key == "PredefinedType":
+        key = self.key
+        if key == "PredefinedType":
             key = "predefined_type"
         value = ifcopenshell.util.selector.get_element_value(element, key)
         for obj in context.visible_objects:

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

@@ -113,7 +113,8 @@ class BIM_PT_select_similar(Panel):
         if SelectSimilarData.data["element_key"]:
             row = self.layout.row(align=True)
             row.prop(props, "element_key", text="")
-            row.operator("bim.select_similar", text="", icon="RESTRICT_SELECT_OFF")
+            op = row.operator("bim.select_similar", text="", icon="RESTRICT_SELECT_OFF")
+            op.key = props.element_key
         else:
             row = self.layout.row()
             row.label(text=f"No Active Element")

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

@@ -628,7 +628,7 @@ class DisableEditingWorkCalendar(bpy.types.Operator):
 
 
 class ImportCSV(bpy.types.Operator, tool.Ifc.Operator, ImportHelper):
-    bl_idname = "import_csv.bim"
+    bl_idname = "bim.import_csv"
     bl_label = "Import CSV"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".csv"
@@ -653,7 +653,7 @@ class ImportCSV(bpy.types.Operator, tool.Ifc.Operator, ImportHelper):
 
 
 class ImportP6(bpy.types.Operator, ImportHelper):
-    bl_idname = "import_p6.bim"
+    bl_idname = "bim.import_p6"
     bl_label = "Import P6"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".xml"
@@ -679,7 +679,7 @@ class ImportP6(bpy.types.Operator, ImportHelper):
 
 
 class ImportP6XER(bpy.types.Operator, ImportHelper):
-    bl_idname = "import_p6xer.bim"
+    bl_idname = "bim.import_p6xer"
     bl_label = "Import P6 XER"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".xer"
@@ -705,7 +705,7 @@ class ImportP6XER(bpy.types.Operator, ImportHelper):
 
 
 class ImportPP(bpy.types.Operator, ImportHelper):
-    bl_idname = "import_pp.bim"
+    bl_idname = "bim.import_pp"
     bl_label = "Import Powerproject .pp"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".pp"
@@ -731,7 +731,7 @@ class ImportPP(bpy.types.Operator, ImportHelper):
 
 
 class ImportMSP(bpy.types.Operator, ImportHelper):
-    bl_idname = "import_msp.bim"
+    bl_idname = "bim.import_msp"
     bl_label = "Import MSP"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".xml"
@@ -757,7 +757,7 @@ class ImportMSP(bpy.types.Operator, ImportHelper):
 
 
 class ExportMSP(bpy.types.Operator, ImportHelper):
-    bl_idname = "export_msp.bim"
+    bl_idname = "bim.export_msp"
     bl_label = "Export MSP"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".xml"
@@ -787,7 +787,7 @@ class ExportMSP(bpy.types.Operator, ImportHelper):
 
 
 class ExportP6(bpy.types.Operator, ImportHelper):
-    bl_idname = "export_p6.bim"
+    bl_idname = "bim.export_p6"
     bl_label = "Export P6"
     bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".xml"

src/blenderbim/blenderbim/bim/module/spatial/prop.py

@@ -44,6 +44,8 @@ def update_elevation(self, context):
 
 
 def update_active_container_index(self, context):
+    if self.active_container_index < 0:
+        return
     self.active_container_id = self.containers[self.active_container_index].ifc_definition_id
     self.container_name = self.containers[self.active_container_index].name
     self.elevation = self.containers[self.active_container_index].elevation

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

@@ -116,7 +116,7 @@ class BIM_PT_SpatialManager(Panel):
         self.props = context.scene.BIMSpatialManagerProperties
         row = self.layout.row()
         row.operator("bim.load_container_manager", icon="FILE_REFRESH", text="Load Spatial Structure")
-        if self.props.active_container_index < len(self.props.containers):
+        if 0 <= self.props.active_container_index < len(self.props.containers):
             ifc_definition_id = self.props.containers[self.props.active_container_index].ifc_definition_id
             row = self.layout.row()
             row.alignment = "RIGHT"
@@ -134,7 +134,7 @@ class BIM_PT_SpatialManager(Panel):
             "active_container_index",
         )
         row = self.layout.row()
-        if self.props.active_container_index < len(self.props.containers):
+        if 0 <= self.props.active_container_index < len(self.props.containers):
             row.prop(self.props, "container_name", text="")
             row.prop(self.props, "elevation", text="")
             op = row.operator("bim.edit_container_attributes", icon="CHECKMARK", text="Apply")

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

@@ -20,6 +20,7 @@ import bpy
 import json
 import ifcopenshell
 import ifcopenshell.api
+import ifcopenshell.util.attribute
 import blenderbim.bim.helper
 import blenderbim.bim.handler
 import blenderbim.core.structural as core

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

@@ -122,7 +122,7 @@ class ColourRgb(PropertyGroup):
     name: StringProperty()
     color_value: FloatVectorProperty(size=3, subtype="COLOR", default=(1, 1, 1))
     # not exposed in the UI, here just to preserve the data
-    color_name: StringProperty("Color Name")
+    color_name: StringProperty(name="Color Name")
 
     # to fit blender.bim.helper.export_attributes
     def get_value(self):

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

@@ -22,6 +22,7 @@ import ifcopenshell.util.element
 import ifcopenshell.util.schema
 import ifcopenshell.util.representation
 import ifcopenshell.util.type
+import ifcopenshell.util.unit
 import ifcopenshell.api
 import blenderbim.tool as tool
 import blenderbim.core.geometry
@@ -454,7 +455,6 @@ class AddType(bpy.types.Operator, tool.Ifc.Operator):
                 predefined_type=predefined_type,
                 ifc_class="IfcStairFlightType",
                 should_add_representation=False,
-                context=body,
             )
             tool.Blender.select_and_activate_single_object(context, obj)
             bpy.ops.bim.add_stair()
@@ -512,10 +512,7 @@ class RemoveType(bpy.types.Operator, tool.Ifc.Operator):
     def _execute(self, context):
         element = tool.Ifc.get().by_id(self.element)
         obj = tool.Ifc.get_object(element)
-        ifcopenshell.api.run("root.remove_product", tool.Ifc.get(), product=element)
-        if obj:
-            tool.Ifc.unlink(obj=obj)
-            bpy.data.objects.remove(obj)
+        tool.Geometry.delete_ifc_object(obj)
 
 
 class RenameType(bpy.types.Operator, tool.Ifc.Operator):

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

@@ -21,6 +21,7 @@ import ifcopenshell.api
 import ifcopenshell.util.representation
 import blenderbim.tool as tool
 import blenderbim.core.geometry
+import blenderbim.core.root
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.model.opening import FilledOpeningGenerator
 
@@ -77,6 +78,10 @@ class AddOpening(bpy.types.Operator, tool.Ifc.Operator):
                 self.report({"INFO"}, "You can't add an opening to another opening.")
                 continue
 
+            if not hasattr(element1, "HasOpenings"):
+                self.report({"INFO"}, f"An {element1.is_a()} is not allowed to have an opening.")
+                continue
+
             if tool.Ifc.is_moved(obj1):
                 blenderbim.core.geometry.edit_object_placement(tool.Ifc, tool.Geometry, tool.Surveyor, obj=obj1)
 

src/blenderbim/blenderbim/bim/ui.py

@@ -19,6 +19,7 @@
 import os
 import bpy
 import addon_utils
+import platform
 from pathlib import Path
 from bpy.types import Panel
 from bpy.props import StringProperty, IntProperty, BoolProperty
@@ -290,8 +291,6 @@ class BIM_ADDON_preferences(bpy.types.AddonPreferences):
         row = layout.row()
         row.prop(self, "spatial_elements_unselectable")
 
-
-
         row = layout.row()
         row.prop(context.scene.BIMProjectProperties, "should_disable_undo_on_save")
         row = layout.row()
@@ -320,28 +319,30 @@ class BIM_ADDON_preferences(bpy.types.AddonPreferences):
         row.prop(context.scene.BIMProperties, "data_dir")
         row.operator("bim.select_data_dir", icon="FILE_FOLDER", text="")
 
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.BIMProperties, "pset_dir")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "sheets_dir")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "layouts_dir")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "titleblocks_dir")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "drawings_dir")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "stylesheet_path")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "markers_path")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "symbols_path")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "patterns_path")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "shadingstyles_path")
-        row = self.layout.row(align=True)
+        row = self.layout.row()
         row.prop(context.scene.DocProperties, "shadingstyle_default")
+        row = self.layout.row()
+        row.prop(context.scene.DocProperties, "drawing_font")
 
 
 # Scene panel groups
@@ -406,10 +407,14 @@ class BIM_PT_tabs(Panel):
 
             if blenderbim.last_error:
                 box = self.layout.box()
+                box.alert=True
                 row = box.row(align=True)
                 row.label(text="BlenderBIM experienced an error :(", icon="ERROR")
                 row.operator("bim.close_error", text="", icon="CANCEL")
-                box.label(text="View the console for full logs.", icon="CONSOLE")
+                if platform.system() == "Windows":
+                    box.operator("wm.console_toggle", text="View the console for full logs.", icon="CONSOLE")
+                else:
+                    box.label(text="View the console for full logs.", icon="CONSOLE")
                 box.operator("bim.copy_debug_information", text="Copy Error Message To Clipboard")
                 op = box.operator("bim.open_uri", text="How Can I Fix This?")
                 op.uri = "https://docs.blenderbim.org/users/troubleshooting.html"

src/blenderbim/blenderbim/core/cost.py

@@ -1,183 +1,232 @@
-def add_cost_schedule(ifc, name, predefined_type):
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+from __future__ import annotations
+from typing import TYPE_CHECKING, Optional, Union
+
+if TYPE_CHECKING:
+    import bpy
+    import ifcopenshell
+    import blenderbim.tool as tool
+
+
+def add_cost_schedule(ifc: tool.Ifc, name, predefined_type):
     ifc.run("cost.add_cost_schedule", name=name, predefined_type=predefined_type)
 
 
-def edit_cost_schedule(ifc, cost, cost_schedule):
+def edit_cost_schedule(ifc: tool.Ifc, cost: tool.Cost, cost_schedule: ifcopenshell.entity_instance):
     attributes = cost.get_cost_schedule_attributes()
     ifc.run("cost.edit_cost_schedule", cost_schedule=cost_schedule, attributes=attributes)
     cost.disable_editing_cost_schedule()
 
 
-def disable_editing_cost_schedule(cost):
+def disable_editing_cost_schedule(cost: tool.Cost):
     cost.disable_editing_cost_schedule()
 
 
-def remove_cost_schedule(ifc, cost_schedule):
+def remove_cost_schedule(ifc: tool.Ifc, cost: tool.Cost, cost_schedule: ifcopenshell.entity_instance) -> None:
     ifc.run("cost.remove_cost_schedule", cost_schedule=cost_schedule)
+    cost.remove_stored_schedule_columns(cost_schedule)
 
 
-def enable_editing_cost_schedule_attributes(cost, cost_schedule):
+def enable_editing_cost_schedule_attributes(cost: tool.Cost, cost_schedule: ifcopenshell.entity_instance):
     cost.load_cost_schedule_attributes(cost_schedule)
     cost.enable_editing_cost_schedule_attributes(cost_schedule)
 
 
-def enable_editing_cost_items(cost, cost_schedule):
+def enable_editing_cost_items(cost: tool.Cost, cost_schedule: ifcopenshell.entity_instance):
     cost.enable_editing_cost_items(cost_schedule)
+    cost.load_active_schedule_columns()
     cost.load_cost_schedule_tree()
     cost.play_sound()
 
 
-def add_summary_cost_item(ifc, cost, cost_schedule):
+def add_summary_cost_item(ifc: tool.Ifc, cost: tool.Cost, cost_schedule: ifcopenshell.entity_instance):
     ifc.run("cost.add_cost_item", cost_schedule=cost_schedule)
     cost.load_cost_schedule_tree()
     # cost.play_sound()
 
 
-def add_cost_item(ifc, cost, cost_item):
+def add_cost_item(ifc: tool.Ifc, cost: tool.Cost, cost_item: ifcopenshell.entity_instance):
     ifc.run("cost.add_cost_item", cost_item=cost_item)
     cost.load_cost_schedule_tree()
     # cost.enable_editing_cost_schedule_attributes(cost_schedule)
 
 
-def expand_cost_item(cost, cost_item):
+def expand_cost_item(cost: tool.Cost, cost_item: ifcopenshell.entity_instance):
     cost.expand_cost_item(cost_item)
     cost.load_cost_schedule_tree()
 
 
-def expand_cost_items(cost):
+def expand_cost_items(cost: tool.Cost):
     cost.expand_cost_items()
     cost.load_cost_schedule_tree()
 
 
-def contract_cost_item(cost, cost_item):
+def contract_cost_item(cost: tool.Cost, cost_item: ifcopenshell.entity_instance):
     cost.contract_cost_item(cost_item)
     cost.load_cost_schedule_tree()
 
 
-def contract_cost_items(cost):
+def contract_cost_items(cost: tool.Cost):
     cost.contract_cost_items()
     cost.load_cost_schedule_tree()
 
 
-def remove_cost_item(ifc, cost, cost_item_id):
+def remove_cost_item(ifc: tool.Ifc, cost: tool.Cost, cost_item_id: int):
     cost_item = ifc.get().by_id(cost_item_id)
     ifc.run("cost.remove_cost_item", cost_item=cost_item)
     cost.clean_up_cost_item_tree(cost_item_id)
     cost.load_cost_schedule_tree()
 
 
-def enable_editing_cost_item_attributes(cost, cost_item):
+def enable_editing_cost_item_attributes(cost: tool.Cost, cost_item: ifcopenshell.entity_instance):
     cost.enable_editing_cost_item_attributes(cost_item)
     cost.load_cost_item_attributes(cost_item)
 
 
-def disable_editing_cost_item(cost):
+def disable_editing_cost_item(cost: tool.Cost):
     cost.disable_editing_cost_item()
 
 
-def edit_cost_item(ifc, cost):
+def edit_cost_item(ifc: tool.Ifc, cost: tool.Cost):
     attributes = cost.get_cost_item_attributes()
     ifc.run("cost.edit_cost_item", cost_item=cost.get_active_cost_item(), attributes=attributes)
     cost.disable_editing_cost_item()
     cost.load_cost_schedule_tree()
 
 
-def assign_cost_item_type(ifc, cost, spatial, cost_item, prop_name):
-    product_types = spatial.get_selected_product_types()
-    [
+def assign_cost_item_type(
+    ifc: tool.Ifc, cost: tool.Cost, spatial: tool.Spatial, cost_item: ifcopenshell.entity_instance, prop_name
+) -> list[ifcopenshell.entity_instance]:
+    """
+    Returns:
+        List of found product types.
+    """
+    product_types = list(spatial.get_selected_product_types())
+    rels = [
         ifc.run("control.assign_control", relating_control=cost_item, related_object=product_type)
         for product_type in product_types
     ]
     cost.load_cost_item_types(cost_item)
+    return product_types
 
 
-def unassign_cost_item_type(ifc, cost, spatial, cost_item, product_types):
+def unassign_cost_item_type(
+    ifc: tool.Ifc,
+    cost: tool.Cost,
+    spatial: tool.Spatial,
+    cost_item: ifcopenshell.entity_instance,
+    product_types: Optional[list[ifcopenshell.entity_instance]] = None,
+) -> list[ifcopenshell.entity_instance]:
+    """
+    Returns:
+        List of found product types.
+    """
     if not product_types:
-        product_types = spatial.get_selected_product_types()
+        product_types = list(spatial.get_selected_product_types())
     [
         ifc.run("control.unassign_control", relating_control=cost_item, related_object=product_type)
         for product_type in product_types
     ]
     cost.load_cost_item_types(cost_item)
+    return product_types
 
 
-def load_cost_item_types(cost):
+def load_cost_item_types(cost: tool.Cost):
     cost_item = cost.get_active_cost_item()
     cost.load_cost_item_types(cost_item)
 
 
-def assign_cost_item_quantity(ifc, cost, cost_item, related_object_type, prop_name):
+def assign_cost_item_quantity(
+    ifc: tool.Ifc, cost: tool.Cost, cost_item: ifcopenshell.entity_instance, related_object_type, prop_name
+):
     products = cost.get_products(related_object_type)
     if products:
         ifc.run("cost.assign_cost_item_quantity", cost_item=cost_item, products=products, prop_name=prop_name)
         cost.load_cost_item_quantity_assignments(cost_item, related_object_type=related_object_type)
 
 
-def load_cost_item_quantities(cost):
+def load_cost_item_quantities(cost: tool.Cost):
     cost.load_cost_item_quantities()
 
 
-def load_cost_item_element_quantities(cost):
+def load_cost_item_element_quantities(cost: tool.Cost):
     cost_item = cost.get_highlighted_cost_item()
     cost.load_cost_item_quantity_assignments(cost_item, related_object_type="PRODUCT")
 
 
-def load_cost_item_task_quantities(cost):
+def load_cost_item_task_quantities(cost: tool.Cost):
     cost_item = cost.get_highlighted_cost_item()
     cost.load_cost_item_quantity_assignments(cost_item, related_object_type="PROCESS")
 
 
-def load_cost_item_resource_quantities(cost):
+def load_cost_item_resource_quantities(cost: tool.Cost):
     cost_item = cost.get_highlighted_cost_item()
     cost.load_cost_item_quantity_assignments(cost_item, related_object_type="RESOURCE")
 
 
-def assign_cost_value(ifc, cost_item, cost_rate):
+def assign_cost_value(ifc: tool.Ifc, cost_item: ifcopenshell.entity_instance, cost_rate):
     ifc.run("cost.assign_cost_value", cost_item=cost_item, cost_rate=cost_rate)
 
 
-def load_schedule_of_rates(cost, schedule_of_rates):
+def load_schedule_of_rates(cost: tool.Cost, schedule_of_rates):
     cost.load_schedule_of_rates_tree(schedule_of_rates)
 
 
-def unassign_cost_item_quantity(ifc, cost, cost_item, products):
+def unassign_cost_item_quantity(ifc: tool.Ifc, cost: tool.Cost, cost_item: ifcopenshell.entity_instance, products):
     ifc.run("cost.unassign_cost_item_quantity", cost_item=cost_item, products=products)
     cost.load_cost_item_quantities()
 
 
-def enable_editing_cost_item_quantities(cost, cost_item):
+def enable_editing_cost_item_quantities(cost: tool.Cost, cost_item: ifcopenshell.entity_instance):
     cost.enable_editing_cost_item_quantities(cost_item)
 
 
-def enable_editing_cost_item_values(cost, cost_item):
+def enable_editing_cost_item_values(cost: tool.Cost, cost_item: ifcopenshell.entity_instance):
     cost.enable_editing_cost_item_values(cost_item)
 
 
-def add_cost_item_quantity(ifc, cost_item, ifc_class):
+def add_cost_item_quantity(ifc: tool.Ifc, cost_item: ifcopenshell.entity_instance, ifc_class):
     ifc.run("cost.add_cost_item_quantity", cost_item=cost_item, ifc_class=ifc_class)
 
 
-def remove_cost_item_quantity(ifc, cost_item, physical_quantity):
+def remove_cost_item_quantity(ifc: tool.Ifc, cost_item: ifcopenshell.entity_instance, physical_quantity):
     ifc.run("cost.remove_cost_item_quantity", cost_item=cost_item, physical_quantity=physical_quantity)
 
 
-def enable_editing_cost_item_quantity(cost, physical_quantity):
+def enable_editing_cost_item_quantity(cost: tool.Cost, physical_quantity):
     cost.load_cost_item_quantity_attributes(physical_quantity)
     cost.enable_editing_cost_item_quantity(physical_quantity)
 
 
-def disable_editing_cost_item_quantity(cost):
+def disable_editing_cost_item_quantity(cost: tool.Cost):
     cost.disable_editing_cost_item_quantity()
 
 
-def edit_cost_item_quantity(ifc, cost, physical_quantity):
+def edit_cost_item_quantity(ifc: tool.Ifc, cost: tool.Cost, physical_quantity):
     attributes = cost.get_cost_item_quantity_attributes()
     ifc.run("cost.edit_cost_item_quantity", physical_quantity=physical_quantity, attributes=attributes)
     cost.disable_editing_cost_item_quantity()
     cost.load_cost_item_quantities()
 
 
-def add_cost_value(ifc, cost, parent, cost_type, cost_category):
+def add_cost_value(ifc: tool.Ifc, cost: tool.Cost, parent, cost_type, cost_category):
     value = ifc.run("cost.add_cost_value", parent=parent)
     ifc.run(
         "cost.edit_cost_value",
@@ -186,82 +235,84 @@ def add_cost_value(ifc, cost, parent, cost_type, cost_category):
     )
 
 
-def remove_cost_value(ifc, parent, cost_value):
+def remove_cost_value(ifc: tool.Ifc, parent, cost_value):
     ifc.run("cost.remove_cost_value", parent=parent, cost_value=cost_value)
 
 
-def enable_editing_cost_item_value(cost, cost_value):
+def enable_editing_cost_item_value(cost: tool.Cost, cost_value):
     cost.load_cost_item_value_attributes(cost_value)
     cost.enable_editing_cost_item_value(cost_value)
 
 
-def disable_editing_cost_item_value(cost):
+def disable_editing_cost_item_value(cost: tool.Cost):
     cost.disable_editing_cost_item_value()
 
 
-def enable_editing_cost_item_value_formula(cost, cost_value):
+def enable_editing_cost_item_value_formula(cost: tool.Cost, cost_value):
     cost.load_cost_item_value_formula_attributes(cost_value)
     cost.enable_editing_cost_item_value_formula(cost_value)
 
 
-def edit_cost_item_value_formula(ifc, cost, cost_value):
+def edit_cost_item_value_formula(ifc: tool.Ifc, cost: tool.Cost, cost_value):
     formula = cost.get_cost_item_value_formula()
     ifc.run("cost.edit_cost_value_formula", cost_value=cost_value, formula=formula)
     cost.disable_editing_cost_item_value()
 
 
-def edit_cost_value(ifc, cost, cost_value):
+def edit_cost_value(ifc: tool.Ifc, cost: tool.Cost, cost_value):
     attributes = cost.get_cost_value_attributes()
     ifc.run("cost.edit_cost_value", cost_value=cost_value, attributes=attributes)
     cost.disable_editing_cost_item_value()
     # cost.load_cost_item_values(cost.get_highlighted_cost_item())
 
 
-def copy_cost_item_values(ifc, cost, source, destination):
+def copy_cost_item_values(ifc: tool.Ifc, cost: tool.Cost, source, destination):
     ifc.run("cost.copy_cost_item_values", source=source, destination=destination)
 
 
-def select_cost_item_products(cost, spatial, cost_item):
+def select_cost_item_products(cost: tool.Cost, spatial: tool.Spatial, cost_item: ifcopenshell.entity_instance):
     is_deep = cost.show_nested_cost_item_elements()
     products = cost.get_cost_item_products(cost_item, is_deep)
     spatial.select_products(products)
 
 
-def select_cost_schedule_products(cost, spatial, cost_schedule):
+def select_cost_schedule_products(cost: tool.Cost, spatial: tool.Spatial, cost_schedule: ifcopenshell.entity_instance):
     products = cost.get_cost_schedule_products(cost_schedule)
     spatial.select_products(products)
 
 
-def import_cost_schedule_csv(cost, file_path, is_schedule_of_rates):
+def import_cost_schedule_csv(cost: tool.Cost, file_path, is_schedule_of_rates):
     cost.import_cost_schedule_csv(file_path, is_schedule_of_rates)
 
 
-def add_cost_column(cost, name):
+def add_cost_column(cost: tool.Cost, name):
     cost.add_cost_column(name)
 
 
-def remove_cost_column(cost, name):
+def remove_cost_column(cost: tool.Cost, name):
     cost.remove_cost_column(name)
 
 
-def expand_cost_item_rate(cost, cost_item):
+def expand_cost_item_rate(cost: tool.Cost, cost_item: ifcopenshell.entity_instance):
     cost.expand_cost_item_rate(cost_item)
 
 
-def contract_cost_item_rate(cost, cost_item):
+def contract_cost_item_rate(cost: tool.Cost, cost_item: ifcopenshell.entity_instance):
     cost.contract_cost_item_rate(cost_item)
 
 
-def calculate_cost_item_resource_value(ifc, cost_item):
+def calculate_cost_item_resource_value(ifc: tool.Ifc, cost_item: ifcopenshell.entity_instance):
     ifc.run("cost.calculate_cost_item_resource_value", cost_item=cost_item)
 
 
-def export_cost_schedules(cost, filepath, format, cost_schedule=None):
+def export_cost_schedules(cost: tool.Cost, filepath: str, format: str, cost_schedule=None):
     cost.play_sound()
     return cost.export_cost_schedules(filepath, format, cost_schedule)
 
 
-def clear_cost_item_assignments(ifc, cost, cost_item, related_object_type):
+def clear_cost_item_assignments(
+    ifc: tool.Ifc, cost: tool.Cost, cost_item: ifcopenshell.entity_instance, related_object_type
+):
     products = cost.get_cost_item_assignments(cost_item, filter_by_type=related_object_type)
     if products:
         ifc.run("cost.unassign_cost_item_quantity", cost_item=cost_item, products=products)
@@ -269,7 +320,7 @@ def clear_cost_item_assignments(ifc, cost, cost_item, related_object_type):
     cost.load_cost_schedule_tree()
 
 
-def select_unassigned_products(ifc, cost, spatial):
+def select_unassigned_products(ifc: tool.Ifc, cost: tool.Cost, spatial: tool.Spatial):
     spatial.deselect_objects()
     products = ifc.get().by_type("IfcElement")
     cost_schedule = cost.get_active_cost_schedule()
@@ -277,11 +328,11 @@ def select_unassigned_products(ifc, cost, spatial):
     spatial.select_products(selection)
 
 
-def load_product_cost_items(cost, product):
+def load_product_cost_items(cost: tool.Cost, product):
     cost.load_product_cost_items(product)
 
 
-def highlight_product_cost_item(spatial, cost, cost_item):
+def highlight_product_cost_item(spatial: tool.Spatial, cost: tool.Cost, cost_item: ifcopenshell.entity_instance):
     cost_schedule = cost.get_cost_schedule(cost_item)
     is_cost_schedule_active = cost.is_cost_schedule_active(cost_schedule)
     if is_cost_schedule_active:
@@ -290,7 +341,7 @@ def highlight_product_cost_item(spatial, cost, cost_item):
         return "Cost schedule is not active"
 
 
-def change_parent_cost_item(ifc, cost, new_parent):
+def change_parent_cost_item(ifc: tool.Ifc, cost: tool.Cost, new_parent):
     cost_item = cost.get_active_cost_item()
     if cost_item and cost.is_root_cost_item(cost_item):
         return "Cannot change root cost item"
@@ -300,7 +351,7 @@ def change_parent_cost_item(ifc, cost, new_parent):
         cost.load_cost_schedule_tree()
 
 
-def copy_cost_item(ifc, cost):
+def copy_cost_item(ifc: tool.Ifc, cost: tool.Cost):
     cost_item = cost.get_highlighted_cost_item()
     if cost_item:
         cost_item = ifc.run("cost.copy_cost_item", cost_item=cost_item)
@@ -308,7 +359,7 @@ def copy_cost_item(ifc, cost):
         cost.load_cost_schedule_tree()
 
 
-def add_currency(ifc, cost):
+def add_currency(ifc: tool.Ifc, cost: tool.Cost):
     unit = ifc.run("unit.add_monetary_unit")
     attributes = cost.get_currency_attributes()
     ifc.run("unit.edit_monetary_unit", unit=unit, attributes=attributes)

src/blenderbim/blenderbim/core/drawing.py

@@ -16,36 +16,44 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
+from __future__ import annotations
 from pathlib import Path
-import ifcopenshell
+from typing import TYPE_CHECKING, Optional
+
+if TYPE_CHECKING:
+    import bpy
+    import ifcopenshell
+    import blenderbim.tool as tool
 
 
-def enable_editing_text(drawing, obj=None):
+def enable_editing_text(drawing: tool.Drawing, obj: bpy.types.Object) -> None:
     drawing.enable_editing_text(obj)
     drawing.import_text_attributes(obj)
 
 
-def disable_editing_text(drawing, obj=None):
+def disable_editing_text(drawing: tool.Drawing, obj: bpy.types.Object) -> None:
     drawing.disable_editing_text(obj)
 
 
-def edit_text(drawing, obj=None):
+def edit_text(drawing: tool.Drawing, obj: bpy.types.Object) -> None:
     drawing.synchronise_ifc_and_text_attributes(obj)
     drawing.update_text_size_pset(obj)
     drawing.update_text_value(obj)
     drawing.disable_editing_text(obj)
 
 
-def enable_editing_assigned_product(drawing, obj=None):
+def enable_editing_assigned_product(drawing: tool.Drawing, obj: bpy.types.Object) -> None:
     drawing.enable_editing_assigned_product(obj)
     drawing.import_assigned_product(obj)
 
 
-def disable_editing_assigned_product(drawing, obj=None):
+def disable_editing_assigned_product(drawing: tool.Drawing, obj: bpy.types.Object) -> None:
     drawing.disable_editing_assigned_product(obj)
 
 
-def edit_assigned_product(ifc, drawing, obj=None, product=None):
+def edit_assigned_product(
+    ifc: tool.Ifc, drawing: tool.Drawing, obj: bpy.types.Object, product: Optional[ifcopenshell.entity_instance] = None
+) -> None:
     element = ifc.get_entity(obj)
     existing_product = drawing.get_assigned_product(element)
     if existing_product != product:
@@ -58,16 +66,16 @@ def edit_assigned_product(ifc, drawing, obj=None, product=None):
     drawing.disable_editing_assigned_product(obj)
 
 
-def load_sheets(drawing):
+def load_sheets(drawing: tool.Drawing) -> None:
     drawing.import_sheets()
     drawing.enable_editing_sheets()
 
 
-def disable_editing_sheets(drawing):
+def disable_editing_sheets(drawing: tool.Drawing) -> None:
     drawing.disable_editing_sheets()
 
 
-def add_sheet(ifc, drawing, titleblock: ifcopenshell.entity_instance):
+def add_sheet(ifc: tool.Ifc, drawing, titleblock: ifcopenshell.entity_instance) -> None:
     sheet = ifc.run("document.add_information")
     layout = ifc.run("document.add_reference", information=sheet)
     titleblock_reference = ifc.run("document.add_reference", information=sheet)
@@ -93,7 +101,7 @@ def add_sheet(ifc, drawing, titleblock: ifcopenshell.entity_instance):
     drawing.import_sheets()
 
 
-def regenerate_sheet(drawing, sheet=None):
+def regenerate_sheet(drawing: tool.Drawing, sheet: ifcopenshell.entity_instance) -> None:
     titleblock_uri = drawing.get_document_uri(sheet, "TITLEBLOCK")
     drawing.create_svg_sheet(sheet, drawing.sanitise_filename(Path(titleblock_uri).stem))
     try:
@@ -104,11 +112,11 @@ def regenerate_sheet(drawing, sheet=None):
             drawing.delete_file(path_layout)
 
 
-def open_sheet(drawing, sheet=None):
+def open_sheet(drawing: tool.Drawing, sheet: ifcopenshell.entity_instance) -> None:
     drawing.open_layout_svg(drawing.get_document_uri(sheet, "LAYOUT"))
 
 
-def remove_sheet(ifc, drawing, sheet=None):
+def remove_sheet(ifc: tool.Ifc, drawing: tool.Drawing, sheet: ifcopenshell.entity_instance) -> None:
     for reference in drawing.get_document_references(sheet):
         if drawing.get_reference_description(reference) in ("LAYOUT", "SHEET", "REVISION", "RASTER"):
             uri = ifc.resolve_uri(drawing.get_document_uri(reference))
@@ -118,7 +126,7 @@ def remove_sheet(ifc, drawing, sheet=None):
     drawing.import_sheets()
 
 
-def rename_sheet(ifc, drawing, sheet: ifcopenshell.entity_instance, identification: str, name: str) -> None:
+def rename_sheet(ifc: tool.Ifc, drawing, sheet: ifcopenshell.entity_instance, identification: str, name: str) -> None:
     if ifc.get_schema() == "IFC2X3":
         attributes = {"DocumentId": identification, "Name": name}
     else:
@@ -144,30 +152,32 @@ def rename_sheet(ifc, drawing, sheet: ifcopenshell.entity_instance, identificati
                     drawing.move_file(old_location, ifc.resolve_uri(new_location))
 
 
-def rename_reference(ifc, drawing, reference=None, identification=None):
+def rename_reference(
+    ifc: tool.Ifc, drawing: tool.Drawing, reference: ifcopenshell.entity_instance, identification: str
+) -> None:
     attributes = drawing.generate_reference_attributes(reference, Identification=identification)
     ifc.run("document.edit_reference", reference=reference, attributes=attributes)
 
 
-def load_schedules(drawing):
+def load_schedules(drawing: tool.Drawing) -> None:
     drawing.import_documents("SCHEDULE")
     drawing.enable_editing_schedules()
 
 
-def load_references(drawing):
+def load_references(drawing: tool.Drawing) -> None:
     drawing.import_documents("REFERENCE")
     drawing.enable_editing_references()
 
 
-def disable_editing_schedules(drawing):
+def disable_editing_schedules(drawing: tool.Drawing) -> None:
     drawing.disable_editing_schedules()
 
 
-def disable_editing_references(drawing):
+def disable_editing_references(drawing: tool.Drawing) -> None:
     drawing.disable_editing_references()
 
 
-def add_document(ifc, drawing, document_type, uri=None):
+def add_document(ifc: tool.Ifc, drawing: tool.Drawing, document_type: tool.Drawing.DOCUMENT_TYPE, uri: str) -> None:
     document = ifc.run("document.add_information")
     reference = ifc.run("document.add_reference", information=document)
     name = drawing.get_path_filename(uri)
@@ -180,34 +190,43 @@ def add_document(ifc, drawing, document_type, uri=None):
     drawing.import_documents(document_type)
 
 
-def remove_document(ifc, drawing, document_type, document=None):
+def remove_document(
+    ifc: tool.Ifc,
+    drawing: tool.Drawing,
+    document_type: tool.Drawing.DOCUMENT_TYPE,
+    document: ifcopenshell.entity_instance,
+) -> None:
     ifc.run("document.remove_information", information=document)
     drawing.import_documents(document_type)
 
 
-def open_schedule(drawing, schedule=None):
+def open_schedule(drawing: tool.Drawing, schedule: ifcopenshell.entity_instance) -> None:
     drawing.open_spreadsheet(drawing.get_document_uri(schedule))
 
 
-def open_reference(drawing, reference=None):
+def open_reference(drawing: tool.Drawing, reference: ifcopenshell.entity_instance) -> None:
     drawing.open_svg(drawing.get_document_uri(reference))
 
 
-def update_document_name(ifc, drawing, document=None, name=None):
+def update_document_name(
+    ifc: tool.Ifc, drawing: tool.Drawing, document: ifcopenshell.entity_instance, name=None
+) -> None:
     if drawing.get_name(document) != name:
         ifc.run("document.edit_information", information=document, attributes={"Name": name})
 
 
-def load_drawings(drawing):
+def load_drawings(drawing: tool.Drawing) -> None:
     drawing.import_drawings()
     drawing.enable_editing_drawings()
 
 
-def disable_editing_drawings(drawing):
+def disable_editing_drawings(drawing: tool.Drawing) -> None:
     drawing.disable_editing_drawings()
 
 
-def add_drawing(ifc, collector, drawing, target_view=None, location_hint=None):
+def add_drawing(
+    ifc: tool.Ifc, collector: tool.Collector, drawing: tool.Drawing, target_view=None, location_hint=None
+) -> None:
     drawing_name = drawing.ensure_unique_drawing_name(drawing.generate_drawing_name(target_view, location_hint))
     drawing_matrix = drawing.generate_drawing_matrix(target_view, location_hint)
     camera = drawing.create_camera(drawing_name, drawing_matrix, location_hint)
@@ -265,7 +284,12 @@ def add_drawing(ifc, collector, drawing, target_view=None, location_hint=None):
     drawing.import_drawings()
 
 
-def duplicate_drawing(ifc, drawing_tool, drawing=None, should_duplicate_annotations=False):
+def duplicate_drawing(
+    ifc: tool.Ifc,
+    drawing_tool: tool.Drawing,
+    drawing: ifcopenshell.entity_instance,
+    should_duplicate_annotations: bool = False,
+) -> ifcopenshell.entity_instance:
     drawing_name = drawing_tool.ensure_unique_drawing_name(drawing_tool.get_name(drawing))
     new_drawing = ifc.run("root.copy_class", product=drawing)
     drawing_tool.copy_representation(drawing, new_drawing)
@@ -302,7 +326,7 @@ def duplicate_drawing(ifc, drawing_tool, drawing=None, should_duplicate_annotati
     return new_drawing
 
 
-def remove_drawing(ifc, drawing_tool, drawing=None):
+def remove_drawing(ifc: tool.Ifc, drawing_tool: tool.Drawing, drawing: ifcopenshell.entity_instance) -> None:
     if drawing_tool.is_active_drawing(drawing):
         drawing_tool.run_drawing_activate_model()
 
@@ -330,7 +354,9 @@ def remove_drawing(ifc, drawing_tool, drawing=None):
     drawing_tool.import_drawings()
 
 
-def update_drawing_name(ifc, drawing_tool, drawing=None, name=None):
+def update_drawing_name(
+    ifc: tool.Ifc, drawing_tool: tool.Drawing, drawing: ifcopenshell.entity_instance, name=None
+) -> None:
     if drawing_tool.get_name(drawing) != name:
         ifc.run("attribute.edit_attributes", product=drawing, attributes={"Name": name})
     group = drawing_tool.get_drawing_group(drawing)
@@ -364,7 +390,13 @@ def update_drawing_name(ifc, drawing_tool, drawing=None, name=None):
             drawing_tool.import_sheets()
 
 
-def add_annotation(ifc, collector, drawing_tool, drawing=None, object_type=None):
+def add_annotation(
+    ifc: tool.Ifc,
+    collector: tool.Collector,
+    drawing_tool: tool.Drawing,
+    drawing: ifcopenshell.entity_instance,
+    object_type: str,
+) -> None:
     target_view = drawing_tool.get_drawing_target_view(drawing)
     context = drawing_tool.get_annotation_context(target_view, object_type)
     if not context:
@@ -387,12 +419,14 @@ def add_annotation(ifc, collector, drawing_tool, drawing=None, object_type=None)
     drawing_tool.enable_editing(obj)
 
 
-def build_schedule(drawing, schedule=None):
+def build_schedule(drawing: tool.Drawing, schedule: ifcopenshell.entity_instance) -> None:
     drawing.create_svg_schedule(schedule)
     drawing.open_svg(drawing.get_path_with_ext(drawing.get_document_uri(schedule), "svg"))
 
 
-def sync_references(ifc, collector, drawing_tool, drawing=None):
+def sync_references(
+    ifc: tool.Ifc, collector: tool.Collector, drawing_tool: tool.Drawing, drawing: ifcopenshell.entity_instance
+) -> None:
     if not drawing_tool.has_annotation(drawing):
         return
 
@@ -437,11 +471,13 @@ def sync_references(ifc, collector, drawing_tool, drawing=None):
             drawing_tool.sync_object_representation(reference_obj)
 
 
-def select_assigned_product(drawing, context):
+def select_assigned_product(drawing: tool.Drawing, context: bpy.types.Context) -> None:
     drawing.select_assigned_product(context)
 
 
-def activate_drawing_view(ifc, blender, drawing_tool, drawing):
+def activate_drawing_view(
+    ifc: tool.Ifc, blender: tool.Blender, drawing_tool: tool.Drawing, drawing: ifcopenshell.entity_instance
+) -> None:
     camera = ifc.get_object(drawing)
     if not camera:
         camera = drawing_tool.import_drawing(drawing)

src/blenderbim/blenderbim/core/geometry.py

@@ -18,10 +18,11 @@
 
 from __future__ import annotations
 from typing import TYPE_CHECKING, Optional
-import blenderbim.core.tool as tool
 
 if TYPE_CHECKING:
     import bpy
+    import ifcopenshell
+    import blenderbim.tool as tool
 
 
 def edit_object_placement(
@@ -37,8 +38,15 @@ def edit_object_placement(
 
 
 def add_representation(
-    ifc, geometry, style, surveyor, obj=None, context=None, ifc_representation_class=None, profile_set_usage=None
-):
+    ifc: tool.Ifc,
+    geometry: tool.Geometry,
+    style: tool.Style,
+    surveyor: tool.Surveyor,
+    obj: bpy.types.Object,
+    context: ifcopenshell.entity_instance,
+    ifc_representation_class: Optional[str] = None,
+    profile_set_usage: Optional[ifcopenshell.entity_instance] = None,
+) -> ifcopenshell.entity_instance:
     element = ifc.get_entity(obj)
     if not element:
         return
@@ -47,7 +55,7 @@ def add_representation(
     data = geometry.get_object_data(obj)
 
     if not data and ifc_representation_class != "IfcTextLiteral":
-        raise IncompatibleRepresentationError()
+        return
 
     representation = ifc.run(
         "geometry.add_representation",
@@ -89,15 +97,15 @@ def add_representation(
 
 
 def switch_representation(
-    ifc,
-    geometry,
-    obj=None,
-    representation=None,
-    should_reload=True,
-    is_global=True,
-    should_sync_changes_first=False,
-    apply_openings=True,
-):
+    ifc: tool.Ifc,
+    geometry: tool.Geometry,
+    obj: bpy.types.Object,
+    representation: ifcopenshell.entity_instance,
+    should_reload: bool = True,
+    is_global: bool = True,
+    should_sync_changes_first: bool = False,
+    apply_openings: bool = True,
+) -> None:
     """Function can switch to representation that wasn't yet assigned to that object. See #2766.
 
     `should_sync_changes_first` - sync ifc representation with current state of `obj.data`;

src/blenderbim/blenderbim/core/material.py

@@ -85,6 +85,7 @@ def enable_editing_material(material_tool, material):
 def edit_material(ifc, material_tool, material):
     attributes = material_tool.get_material_attributes()
     ifc.run("material.edit_material", material=material, attributes=attributes)
+    material_tool.sync_blender_material_name(material)
     material_tool.disable_editing_material()
     material_type = material_tool.get_active_material_type()
     material_tool.import_material_definitions(material_type)

src/blenderbim/blenderbim/core/project.py

@@ -16,8 +16,16 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
+from __future__ import annotations
+from typing import TYPE_CHECKING, Optional
 
-def create_project(ifc, project, schema=None, template=None):
+if TYPE_CHECKING:
+    import bpy
+    import ifcopenshell
+    import blenderbim.tool as tool
+
+
+def create_project(ifc: tool.Ifc, project: tool.Project, schema: str, template: Optional[str] = None) -> None:
     if ifc.get():
         return
 
@@ -34,7 +42,7 @@ def create_project(ifc, project, schema=None, template=None):
     building = project.create_empty("My Building")
     storey = project.create_empty("My Storey")
 
-    project.run_root_assign_class(obj=project_obj, ifc_class="IfcProject")
+    project.run_root_assign_class(obj=project_obj, ifc_class="IfcProject", should_add_representation=False)
     project.run_unit_assign_scene_units()
 
     model = project.run_context_add_context(context_type="Model", context_identifier="", target_view="", parent=0)

src/blenderbim/blenderbim/core/pset.py

@@ -31,7 +31,7 @@ def copy_property_to_selection(ifc, pset, is_pset=True, obj=None, pset_name=None
 
 
 def add_pset(ifc, pset, blender, obj_name, obj_type):
-    pset_name = pset.get_pset_name(obj_name, obj_type)
+    pset_name = pset.get_pset_name(obj_name, obj_type, pset_type="PSET")
     if obj_type == "Object":
         elements = [ifc.get_entity(obj) for obj in blender.get_selected_objects()]
     else:
@@ -39,6 +39,30 @@ def add_pset(ifc, pset, blender, obj_name, obj_type):
     for element in elements:
         if not element:
             continue
-        if not pset.is_pset_applicable(element, pset_name):
+        if pset_name and not pset.is_pset_applicable(element, pset_name):
             continue
         pset.enable_pset_editing(pset_id=0, pset_name=pset_name, pset_type="PSET", obj=obj_name, obj_type=obj_type)
+
+
+def enable_pset_editing(pset_tool, pset, pset_name, pset_type, obj_name, obj_type):
+    props = pset_tool.get_pset_props(obj_name, obj_type)
+    pset_tool.clear_blender_pset_properties(props)
+
+    pset_template = pset_tool.get_pset_template(pset_name)
+
+    if pset_template:
+        pset_tool.import_pset_from_template(pset_template, pset, props)
+        has_template = True
+    else:
+        has_template = False
+
+    if pset:
+        pset_tool.import_pset_from_existing(pset, props)
+        pset_tool.set_active_pset(props, pset, has_template)
+    else:
+        pset_tool.enable_proposed_pset(props, pset_name, pset_type, has_template)
+
+
+def add_proposed_prop(pset, obj_name, obj_type, name, value):
+    props = pset.get_pset_props(obj_name, obj_type)
+    pset.add_proposed_property(name, pset.cast_string_to_primitive(value), props)

src/blenderbim/blenderbim/core/resource.py

@@ -18,42 +18,57 @@
 
 # ############################################################################ #
 
+from __future__ import annotations
+from typing import TYPE_CHECKING, Optional, Union, Iterable
 
-def load_resources(resource):
+if TYPE_CHECKING:
+    import bpy
+    import ifcopenshell
+    import blenderbim.tool as tool
+
+
+def load_resources(resource: tool.Resource) -> None:
     resource.load_resources()
 
 
-def add_resource(tool_ifc, resource_tool, ifc_class, parent_resource=None):
+def add_resource(
+    tool_ifc: tool.Ifc,
+    resource_tool: tool.Resource,
+    ifc_class,
+    parent_resource: Optional[ifcopenshell.entity_instance] = None,
+) -> None:
     tool_ifc.run("resource.add_resource", ifc_class=ifc_class, parent_resource=parent_resource)
     resource_tool.load_resources()
 
 
-def disable_editing_resource(resource_tool):
+def disable_editing_resource(resource_tool: tool.Resource) -> None:
     resource_tool.disable_editing_resource()
 
 
-def disable_resource_editing_ui(resource_tool):
+def disable_resource_editing_ui(resource_tool: tool.Resource) -> None:
     resource_tool.disable_resource_editing_ui()
 
 
-def enable_editing_resource(resource_tool, resource):
+def enable_editing_resource(resource_tool: tool.Resource, resource) -> None:
     resource_tool.enable_editing_resource(resource)
     resource_tool.load_resource_attributes(resource)
 
 
-def edit_resource(ifc, resource_tool, resource):
+def edit_resource(ifc: tool.Ifc, resource_tool: tool.Resource, resource: ifcopenshell.entity_instance) -> None:
     attributes = resource_tool.get_resource_attributes()
     ifc.run("resource.edit_resource", resource=resource, attributes=attributes)
     resource_tool.load_resource_properties()
     resource_tool.disable_editing_resource()
 
 
-def remove_resource(ifc, resource_tool, resource=None):
+def remove_resource(ifc: tool.Ifc, resource_tool: tool.Resource, resource: ifcopenshell.entity_instance) -> None:
     ifc.run("resource.remove_resource", resource=resource)
     resource_tool.load_resources()
 
 
-def enable_editing_resource_time(ifc_tool, resource_tool, resource):
+def enable_editing_resource_time(
+    ifc_tool, resource_tool: tool.Resource, resource: ifcopenshell.entity_instance
+) -> None:
     resource_time = resource_tool.get_resource_time(resource)
     if resource_time is None:
         resource_time = ifc_tool.run("resource.add_resource_time", resource=resource)
@@ -61,17 +76,21 @@ def enable_editing_resource_time(ifc_tool, resource_tool, resource):
     resource_tool.load_resource_time_attributes(resource_time)
 
 
-def edit_resource_time(ifc, resource_tool, resource_time):
+def edit_resource_time(
+    ifc: tool.Ifc, resource_tool: tool.Resource, resource_time: ifcopenshell.entity_instance
+) -> None:
     attributes = resource_tool.get_resource_time_attributes()
     ifc.run("resource.edit_resource_time", resource_time=resource_time, attributes=attributes)
     resource_tool.disable_editing_resource()
 
 
-def disable_editing_resource_time(resource_tool):
+def disable_editing_resource_time(resource_tool: tool.Resource) -> None:
     resource_tool.disable_editing_resource()
 
 
-def calculate_resource_work(ifc, resource_tool, resource):
+def calculate_resource_work(
+    ifc: tool.Ifc, resource_tool: tool.Resource, resource: ifcopenshell.entity_instance
+) -> None:
     if resource_tool.get_task_assignments(resource):
         ifc.run("resource.calculate_resource_work", resource=resource)
     else:
@@ -81,92 +100,112 @@ def calculate_resource_work(ifc, resource_tool, resource):
     resource_tool.load_resources()
 
 
-def enable_editing_resource_costs(resource_tool, resource):
+def enable_editing_resource_costs(resource_tool: tool.Resource, resource: ifcopenshell.entity_instance) -> None:
     resource_tool.enable_editing_resource_costs(resource)
     resource_tool.disable_editing_resource_cost_value()
 
 
-def disable_editing_resource_cost_value(resource_tool):
+def disable_editing_resource_cost_value(resource_tool: tool.Resource) -> None:
     resource_tool.disable_editing_resource_cost_value()
 
 
-def enable_editing_resource_cost_value(resource_tool, cost_value):
+def enable_editing_resource_cost_value(resource_tool: tool.Resource, cost_value: ifcopenshell.entity_instance) -> None:
     resource_tool.enable_editing_cost_value_attributes(cost_value)
     resource_tool.load_cost_value_attributes(cost_value)
 
 
-def enable_editing_resource_cost_value_formula(resource_tool, cost_value):
+def enable_editing_resource_cost_value_formula(
+    resource_tool: tool.Resource, cost_value: ifcopenshell.entity_instance
+) -> None:
     resource_tool.enable_editing_resource_cost_value_formula(cost_value)
 
 
-def edit_resource_cost_value_formula(ifc, resource_tool, cost_value):
+def edit_resource_cost_value_formula(
+    ifc: tool.Ifc, resource_tool: tool.Resource, cost_value: ifcopenshell.entity_instance
+) -> None:
     formula = resource_tool.get_resource_cost_value_formula()
     ifc.run("cost.edit_cost_value_formula", cost_value=cost_value, formula=formula)
     resource_tool.disable_editing_resource_cost_value()
 
 
-def edit_resource_cost_value(ifc, resource_tool, cost_value):
+def edit_resource_cost_value(
+    ifc: tool.Ifc, resource_tool: tool.Resource, cost_value: ifcopenshell.entity_instance
+) -> None:
     attributes = resource_tool.get_resource_cost_value_attributes()
     ifc.run("cost.edit_cost_value", cost_value=cost_value, attributes=attributes)
     resource_tool.disable_editing_resource_cost_value()
 
 
-def enable_editing_resource_base_quantity(resource_tool, resource):
+def enable_editing_resource_base_quantity(resource_tool: tool.Resource, resource: ifcopenshell.entity_instance) -> None:
     resource_tool.enable_editing_resource_base_quantity(resource)
 
 
-def add_resource_quantity(ifc, ifc_class, resource):
+def add_resource_quantity(ifc: tool.Ifc, ifc_class: str, resource: ifcopenshell.entity_instance) -> None:
     ifc.run("resource.add_resource_quantity", resource=resource, ifc_class=ifc_class)
 
 
-def remove_resource_quantity(ifc, resource):
+def remove_resource_quantity(ifc: tool.Ifc, resource: ifcopenshell.entity_instance) -> None:
     ifc.run("resource.remove_resource_quantity", resource=resource)
 
 
-def enable_editing_resource_quantity(resource_tool, resource_quantity=None):
+def enable_editing_resource_quantity(
+    resource_tool: tool.Resource, resource_quantity: ifcopenshell.entity_instance
+) -> None:
     resource_tool.enable_editing_resource_quantity(resource_quantity)
 
 
-def disable_editing_resource_quantity(resource_tool):
+def disable_editing_resource_quantity(resource_tool: tool.Resource) -> None:
     resource_tool.disable_editing_resource_quantity()
 
 
-def edit_resource_quantity(resource_tool, ifc, physical_quantity=None):
+def edit_resource_quantity(
+    resource_tool: tool.Resource, ifc: tool.Ifc, physical_quantity: ifcopenshell.entity_instance
+) -> None:
     attributes = resource_tool.get_resource_quantity_attributes()
     ifc.run("resource.edit_resource_quantity", physical_quantity=physical_quantity, attributes=attributes)
     resource_tool.disable_editing_resource_quantity()
 
 
-def import_resources(resource_tool, file_path):
+def import_resources(resource_tool: tool.Resource, file_path: str) -> None:
     resource_tool.import_resources(file_path)
     resource_tool.load_resources()
 
 
-def expand_resource(resource_tool, resource):
+def expand_resource(resource_tool: tool.Resource, resource: ifcopenshell.entity_instance) -> None:
     resource_tool.expand_resource(resource)
     resource_tool.load_resources()
 
 
-def contract_resource(resource_tool, resource):
+def contract_resource(resource_tool: tool.Resource, resource: ifcopenshell.entity_instance) -> None:
     resource_tool.contract_resource(resource)
     resource_tool.load_resources()
 
 
-def assign_resource(ifc, spatial, resource=None, products=None):
+def assign_resource(
+    ifc: tool.Ifc,
+    spatial: tool.Spatial,
+    resource: ifcopenshell.entity_instance,
+    products: Optional[Iterable[ifcopenshell.entity_instance]] = None,
+) -> None:
     if not products:
         products = spatial.get_selected_products()
     for product in products:
         rel = ifc.run("resource.assign_resource", relating_resource=resource, related_object=product)
 
 
-def unassign_resource(ifc, spatial, resource=None, products=None):
+def unassign_resource(
+    ifc: tool.Ifc,
+    spatial: tool.Spatial,
+    resource: ifcopenshell.entity_instance,
+    products: Optional[Iterable[ifcopenshell.entity_instance]] = None,
+) -> None:
     if not products:
         products = spatial.get_selected_products()
     for product in products:
         ifc.run("resource.unassign_resource", relating_resource=resource, related_object=product)
 
 
-def edit_productivity_pset(ifc, resource_tool):
+def edit_productivity_pset(ifc: tool.Ifc, resource_tool: tool.Resource) -> None:
     resource = resource_tool.get_highlighted_resource()
     if resource is None:
         return
@@ -178,7 +217,9 @@ def edit_productivity_pset(ifc, resource_tool):
     ifc.run("pset.edit_pset", pset=pset, properties=resource_tool.get_productivity_attributes())
 
 
-def add_usage_constraint(ifc, resource_tool, resource=None, reference_path=None):
+def add_usage_constraint(
+    ifc: tool.Ifc, resource_tool: tool.Resource, resource: ifcopenshell.entity_instance, reference_path: str
+) -> None:
     metric = resource_tool.has_metric_constraint(resource, "Usage")
     if metric:
         return print("Must remove existing metric first")
@@ -198,7 +239,9 @@ def add_usage_constraint(ifc, resource_tool, resource=None, reference_path=None)
     ifc.run("constraint.assign_constraint", products=[resource], constraint=objective)
 
 
-def remove_usage_constraint(ifc, resource_tool, resource, reference_path):
+def remove_usage_constraint(
+    ifc: tool.Ifc, resource_tool: tool.Resource, resource: ifcopenshell.entity_instance, reference_path: str
+) -> None:
     constraints = resource_tool.get_constraints(resource)
     for constraint in constraints:
         metrics = resource_tool.get_metrics(constraint)
@@ -210,10 +253,12 @@ def remove_usage_constraint(ifc, resource_tool, resource, reference_path):
                 ifc.run("constraint.remove_constraint", constraint=constraint)
 
 
-def go_to_resource(resource_tool, resource):
+def go_to_resource(resource_tool: tool.Resource, resource: ifcopenshell.entity_instance) -> None:
     resource_tool.go_to_resource(resource)
 
 
-def calculate_resource_usage(ifc, resource_tool, resource):
+def calculate_resource_usage(
+    ifc: tool.Resource, resource_tool: tool.Resource, resource: ifcopenshell.entity_instance
+) -> None:
     ifc.run("resource.calculate_resource_usage", resource=resource)
     resource_tool.load_resources()

src/blenderbim/blenderbim/core/root.py

@@ -16,8 +16,18 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
+from __future__ import annotations
+from typing import TYPE_CHECKING, Optional
 
-def copy_class(ifc, collector, geometry, root, obj=None):
+if TYPE_CHECKING:
+    import bpy
+    import ifcopenshell
+    import blenderbim.tool as tool
+
+
+def copy_class(
+    ifc: tool.Ifc, collector: tool.Collector, geometry: tool.Geometry, root: tool.Root, obj: bpy.types.Object
+) -> ifcopenshell.entity_instance:
     element = ifc.get_entity(obj)
     if not element:
         return
@@ -48,16 +58,20 @@ def copy_class(ifc, collector, geometry, root, obj=None):
 
 
 def assign_class(
-    ifc,
-    collector,
-    root,
-    obj=None,
-    ifc_class=None,
-    predefined_type=None,
-    should_add_representation=True,
-    context=None,
-    ifc_representation_class=None,
-):
+    ifc: tool.Ifc,
+    collector: tool.Collector,
+    root: tool.Root,
+    obj: bpy.types.Object,
+    ifc_class: str,
+    context: Optional[ifcopenshell.entity_instance] = None,
+    predefined_type: Optional[str] = None,
+    should_add_representation: bool = True,
+    ifc_representation_class: Optional[str] = None,
+) -> ifcopenshell.entity_instance:
+    """
+    Args:
+        context: is not optional if `should_add_representation` is True
+    """
     if ifc.get_entity(obj):
         return
 
@@ -67,6 +81,7 @@ def assign_class(
     ifc.link(element, obj)
 
     if should_add_representation:
+        assert context, "Context is required for adding a representation"
         root.run_geometry_add_representation(
             obj=obj, context=context, ifc_representation_class=ifc_representation_class, profile_set_usage=None
         )

src/blenderbim/blenderbim/core/sequence.py

@@ -16,103 +16,115 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
+from __future__ import annotations
+from typing import TYPE_CHECKING, Optional, Union
 
-def add_work_plan(ifc):
+if TYPE_CHECKING:
+    import bpy
+    import ifcopenshell
+    import blenderbim.tool as tool
+
+
+def add_work_plan(ifc: tool.Ifc) -> ifcopenshell.entity_instance:
     return ifc.run("sequence.add_work_plan")
 
 
-def remove_work_plan(ifc, work_plan=None):
+def remove_work_plan(ifc: tool.Ifc, work_plan: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.remove_work_plan", work_plan=work_plan)
 
 
-def enable_editing_work_plan(sequence, work_plan=None):
+def enable_editing_work_plan(sequence: tool.Sequence, work_plan: ifcopenshell.entity_instance) -> None:
     sequence.load_work_plan_attributes(work_plan)
     sequence.enable_editing_work_plan(work_plan)
 
 
-def disable_editing_work_plan(sequence):
+def disable_editing_work_plan(sequence: tool.Sequence) -> None:
     sequence.disable_editing_work_plan()
 
 
-def edit_work_plan(ifc, sequence, work_plan=None):
+def edit_work_plan(ifc: tool.Ifc, sequence: tool.Sequence, work_plan: ifcopenshell.entity_instance) -> None:
     attributes = sequence.get_work_plan_attributes()
     ifc.run("sequence.edit_work_plan", work_plan=work_plan, attributes=attributes)
     sequence.disable_editing_work_plan()
 
 
-def edit_work_schedule(ifc, sequence, work_schedule=None):
+def edit_work_schedule(ifc: tool.Ifc, sequence: tool.Sequence, work_schedule: ifcopenshell.entity_instance) -> None:
     attributes = sequence.get_work_schedule_attributes()
     ifc.run("sequence.edit_work_schedule", work_schedule=work_schedule, attributes=attributes)
     sequence.disable_editing_work_schedule()
 
 
-def enable_editing_work_plan_schedules(sequence, work_plan=None):
+def enable_editing_work_plan_schedules(
+    sequence: tool.Sequence, work_plan: Optional[ifcopenshell.entity_instance] = None
+) -> None:
     sequence.enable_editing_work_plan_schedules(work_plan)
 
 
-def add_work_schedule(ifc, sequence, name=None):
+def add_work_schedule(ifc: tool.Ifc, sequence: tool.Sequence, name: str) -> ifcopenshell.entity_instance:
     predefined_type, object_type = sequence.get_user_predefined_type()
     return ifc.run("sequence.add_work_schedule", name=name, predefined_type=predefined_type, object_type=object_type)
 
 
-def remove_work_schedule(ifc, work_schedule=None):
+def remove_work_schedule(ifc: tool.Ifc, work_schedule: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.remove_work_schedule", work_schedule=work_schedule)
 
 
-def assign_work_schedule(ifc, work_plan=None, work_schedule=None):
+def assign_work_schedule(
+    ifc: tool.Ifc, work_plan: ifcopenshell.entity_instance, work_schedule: ifcopenshell.entity_instance
+) -> Union[ifcopenshell.entity_instance, None]:
     if work_schedule:
         return ifc.run("aggregate.assign_object", relating_object=work_plan, products=[work_schedule])
 
 
-def unassign_work_schedule(ifc, work_schedule=None):
+def unassign_work_schedule(ifc: tool.Ifc, work_schedule: ifcopenshell.entity_instance) -> None:
     ifc.run("aggregate.unassign_object", products=[work_schedule])
 
 
-def enable_editing_work_schedule(sequence, work_schedule=None):
+def enable_editing_work_schedule(sequence: tool.Sequence, work_schedule: ifcopenshell.entity_instance) -> None:
     sequence.load_work_schedule_attributes(work_schedule)
     sequence.enable_editing_work_schedule(work_schedule)
 
 
-def enable_editing_work_schedule_tasks(sequence, work_schedule=None):
+def enable_editing_work_schedule_tasks(sequence: tool.Sequence, work_schedule: ifcopenshell.entity_instance) -> None:
     sequence.enable_editing_work_schedule_tasks(work_schedule)
     sequence.load_task_tree(work_schedule)
     sequence.load_task_properties()
 
 
-def load_task_tree(sequence, work_schedule):
+def load_task_tree(sequence: tool.Sequence, work_schedule) -> None:
     sequence.load_task_tree(work_schedule)
     sequence.load_task_properties()
 
 
-def expand_task(sequence, task=None):
+def expand_task(sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     sequence.expand_task(task)
     work_schedule = sequence.get_active_work_schedule()
     sequence.load_task_tree(work_schedule)
     sequence.load_task_properties()
 
 
-def expand_all_tasks(sequence):
+def expand_all_tasks(sequence: tool.Sequence) -> None:
     sequence.expand_all_tasks()
     work_schedule = sequence.get_active_work_schedule()
     sequence.load_task_tree(work_schedule)
     sequence.load_task_properties()
 
 
-def contract_task(sequence, task=None):
+def contract_task(sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     sequence.contract_task(task)
     work_schedule = sequence.get_active_work_schedule()
     sequence.load_task_tree(work_schedule)
     sequence.load_task_properties()
 
 
-def contract_all_tasks(sequence):
+def contract_all_tasks(sequence: tool.Sequence) -> None:
     sequence.contract_all_tasks()
     work_schedule = sequence.get_active_work_schedule()
     sequence.load_task_tree(work_schedule)
     sequence.load_task_properties()
 
 
-def remove_task(ifc, sequence, task=None):
+def remove_task(ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.remove_task", task=task)
     work_schedule = sequence.get_active_work_schedule()
     sequence.load_task_tree(work_schedule)
@@ -120,44 +132,42 @@ def remove_task(ifc, sequence, task=None):
     sequence.disable_selecting_deleted_task()
 
 
-def load_task_properties(sequence):
+def load_task_properties(sequence: tool.Sequence) -> None:
     sequence.load_task_properties()
 
 
-def disable_editing_work_schedule(sequence):
+def disable_editing_work_schedule(sequence: tool.Sequence) -> None:
     sequence.disable_editing_work_schedule()
 
 
-def add_summary_task(ifc, sequence, work_schedule=None):
+def add_summary_task(ifc: tool.Ifc, sequence: tool.Sequence, work_schedule: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.add_task", work_schedule=work_schedule)
     sequence.load_task_tree(work_schedule)
     sequence.load_task_properties()
 
 
-def add_task(ifc, sequence, parent_task=None):
+def add_task(
+    ifc: tool.Ifc, sequence: tool.Sequence, parent_task: Optional[ifcopenshell.entity_instance] = None
+) -> None:
     ifc.run("sequence.add_task", parent_task=parent_task)
     work_schedule = sequence.get_active_work_schedule()
     sequence.load_task_tree(work_schedule)
     sequence.load_task_properties()
 
 
-def enable_editing_task(sequence, task=None):
-    sequence.enable_editing_task(task)
-
-
-def enable_editing_task_attributes(sequence, task=None):
+def enable_editing_task_attributes(sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     sequence.load_task_attributes(task)
     sequence.enable_editing_task_attributes(task)
 
 
-def edit_task(ifc, sequence, task=None):
+def edit_task(ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     attributes = sequence.get_task_attributes()
     ifc.run("sequence.edit_task", task=task, attributes=attributes)
     sequence.load_task_properties(task=task)
     sequence.disable_editing_task()
 
 
-def copy_task_attribute(ifc, sequence, attribute_name=None):
+def copy_task_attribute(ifc: tool.Ifc, sequence: tool.Sequence, attribute_name: str) -> None:
     for task in sequence.get_checked_tasks():
         ifc.run(
             "sequence.edit_task",
@@ -167,18 +177,18 @@ def copy_task_attribute(ifc, sequence, attribute_name=None):
         sequence.load_task_properties(task)
 
 
-def duplicate_task(ifc, sequence, task=None):
+def duplicate_task(ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.duplicate_task", task=task)
     work_schedule = sequence.get_active_work_schedule()
     sequence.load_task_tree(work_schedule)
     sequence.load_task_properties()
 
 
-def disable_editing_task(sequence):
+def disable_editing_task(sequence: tool.Sequence) -> None:
     sequence.disable_editing_task()
 
 
-def enable_editing_task_time(ifc, sequence, task=None):
+def enable_editing_task_time(ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     task_time = sequence.get_task_time(task)
     if task_time is None:
         task_time = ifc.run("sequence.add_task_time", task=task)
@@ -186,7 +196,7 @@ def enable_editing_task_time(ifc, sequence, task=None):
     sequence.enable_editing_task_time(task)
 
 
-def edit_task_time(ifc, sequence, resource, task_time=None):
+def edit_task_time(ifc: tool.Ifc, sequence: tool.Sequence, resource, task_time: ifcopenshell.entity_instance) -> None:
     attributes = sequence.get_task_time_attributes()
     # TODO: nasty loop goes on when calendar props are messed up
     ifc.run("sequence.edit_task_time", task_time=task_time, attributes=attributes)
@@ -196,59 +206,83 @@ def edit_task_time(ifc, sequence, resource, task_time=None):
     resource.load_resource_properties()
 
 
-def assign_predecessor(ifc, sequence, task=None):
+def assign_predecessor(ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     predecessor_task = sequence.get_highlighted_task()
     ifc.run("sequence.assign_sequence", relating_process=task, related_process=predecessor_task)
     sequence.load_task_properties()
 
 
-def unassign_predecessor(ifc, sequence, task=None):
+def unassign_predecessor(ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     predecessor_task = sequence.get_highlighted_task()
     ifc.run("sequence.unassign_sequence", relating_process=task, related_process=predecessor_task)
     sequence.load_task_properties()
 
 
-def assign_successor(ifc, sequence, task=None):
+def assign_successor(ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     successor_task = sequence.get_highlighted_task()
     ifc.run("sequence.assign_sequence", relating_process=successor_task, related_process=task)
     sequence.load_task_properties()
 
 
-def unassign_successor(ifc, sequence, task=None):
+def unassign_successor(ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     successor_task = sequence.get_highlighted_task()
     ifc.run("sequence.unassign_sequence", relating_process=successor_task, related_process=task)
     sequence.load_task_properties()
 
 
-def assign_products(ifc, sequence, spatial, task=None, products=None):
+def assign_products(
+    ifc: tool.Ifc,
+    sequence: tool.Sequence,
+    spatial: tool.Spatial,
+    task: ifcopenshell.entity_instance,
+    products: Optional[list[ifcopenshell.entity_instance]] = None,
+) -> None:
     for product in products or spatial.get_selected_products() or []:
         ifc.run("sequence.assign_product", relating_product=product, related_object=task)
     outputs = sequence.get_task_outputs(task)
     sequence.load_task_outputs(outputs)
 
 
-def unassign_products(ifc, sequence, spatial, task=None, products=None):
+def unassign_products(
+    ifc: tool.Ifc,
+    sequence: tool.Sequence,
+    spatial: tool.Spatial,
+    task: ifcopenshell.entity_instance,
+    products: Optional[list[ifcopenshell.entity_instance]] = None,
+) -> None:
     for product in products or spatial.get_selected_products() or []:
         ifc.run("sequence.unassign_product", relating_product=product, related_object=task)
     outputs = sequence.get_task_outputs(task)
     sequence.load_task_outputs(outputs)
 
 
-def assign_input_products(ifc, sequence, spatial, task=None, products=None):
+def assign_input_products(
+    ifc: tool.Ifc,
+    sequence: tool.Sequence,
+    spatial: tool.Spatial,
+    task: ifcopenshell.entity_instance,
+    products: Optional[list[ifcopenshell.entity_instance]] = None,
+) -> None:
     for product in products or spatial.get_selected_products() or []:
         ifc.run("sequence.assign_process", relating_process=task, related_object=product)
     inputs = sequence.get_task_inputs(task)
     sequence.load_task_inputs(inputs)
 
 
-def unassign_input_products(ifc, sequence, spatial, task=None, products=None):
+def unassign_input_products(
+    ifc: tool.Ifc,
+    sequence: tool.Sequence,
+    spatial: tool.Spatial,
+    task: ifcopenshell.entity_instance,
+    products: Optional[list[ifcopenshell.entity_instance]] = None,
+) -> None:
     for product in products or spatial.get_selected_products() or []:
         ifc.run("sequence.unassign_process", relating_process=task, related_object=product)
     inputs = sequence.get_task_inputs(task)
     sequence.load_task_inputs(inputs)
 
 
-def assign_resource(ifc, sequence, resource_tool, task=None):
+def assign_resource(ifc: tool.Ifc, sequence: tool.Sequence, resource_tool, task: ifcopenshell.entity_instance) -> None:
     resource = resource_tool.get_highlighted_resource()
     sub_resource = ifc.run(
         "resource.add_resource",
@@ -261,59 +295,67 @@ def assign_resource(ifc, sequence, resource_tool, task=None):
     resource_tool.load_resources()
 
 
-def unassign_resource(ifc, sequence, resource_tool, task=None, resource=None):
+def unassign_resource(
+    ifc: tool.Ifc,
+    sequence: tool.Sequence,
+    resource_tool,
+    task: ifcopenshell.entity_instance,
+    resource: ifcopenshell.entity_instance,
+) -> None:
     ifc.run("sequence.unassign_process", relating_process=task, related_object=resource)
     ifc.run("resource.remove_resource", resource=resource)
     sequence.load_task_resources(task)
     resource_tool.load_resources()
 
 
-def remove_work_calendar(ifc, work_calendar=None):
+def remove_work_calendar(ifc: tool.Ifc, work_calendar: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.remove_work_calendar", work_calendar=work_calendar)
 
 
-def add_work_calendar(ifc):
+def add_work_calendar(ifc: tool.Ifc) -> ifcopenshell.entity_instance:
     return ifc.run("sequence.add_work_calendar")
 
 
-def edit_work_calendar(ifc, sequence, work_calendar=None):
+def edit_work_calendar(ifc: tool.Ifc, sequence: tool.Sequence, work_calendar: ifcopenshell.entity_instance) -> None:
     attributes = sequence.get_work_calendar_attributes()
     ifc.run("sequence.edit_work_calendar", work_calendar=work_calendar, attributes=attributes)
     sequence.disable_editing_work_calendar()
     sequence.load_task_properties()
 
 
-def enable_editing_work_calendar(sequence, work_calendar=None):
+def enable_editing_work_calendar(sequence: tool.Sequence, work_calendar: ifcopenshell.entity_instance) -> None:
     sequence.load_work_calendar_attributes(work_calendar)
     sequence.enable_editing_work_calendar(work_calendar)
 
 
-def disable_editing_work_calendar(sequence):
+def disable_editing_work_calendar(sequence: tool.Sequence) -> None:
     sequence.disable_editing_work_calendar()
 
 
-def enable_editing_work_calendar_times(sequence, work_calendar=None):
+def enable_editing_work_calendar_times(sequence: tool.Sequence, work_calendar: ifcopenshell.entity_instance) -> None:
     sequence.enable_editing_work_calendar_times(work_calendar)
 
 
-def add_work_time(ifc, work_calendar=None, time_type=None):
+def add_work_time(
+    ifc: tool.Ifc, work_calendar: ifcopenshell.entity_instance, time_type: ifcopenshell.entity_instance
+) -> ifcopenshell.entity_instance:
     return ifc.run("sequence.add_work_time", work_calendar=work_calendar, time_type=time_type)
 
 
-def enable_editing_work_time(sequence, work_time=None):
+def enable_editing_work_time(sequence: tool.Sequence, work_time: ifcopenshell.entity_instance) -> None:
     sequence.load_work_time_attributes(work_time)
     sequence.enable_editing_work_time(work_time)
 
 
-def disable_editing_work_time(sequence):
+def disable_editing_work_time(sequence: tool.Sequence) -> None:
     sequence.disable_editing_work_time()
 
 
-def remove_work_time(ifc, work_time=None):
+def remove_work_time(ifc: tool.Ifc, work_time=None) -> None:
     ifc.run("sequence.remove_work_time", work_time=work_time)
 
 
-def edit_work_time(ifc, sequence):
+def edit_work_time(ifc: tool.Ifc, sequence: tool.Sequence) -> None:
     work_time = sequence.get_active_work_time()
     ifc.run("sequence.edit_work_time", work_time=work_time, attributes=sequence.get_work_time_attributes())
     recurrence_pattern = work_time.RecurrencePattern
@@ -326,100 +368,118 @@ def edit_work_time(ifc, sequence):
     sequence.disable_editing_work_time()
 
 
-def assign_recurrence_pattern(ifc, work_time=None, recurrence_type=None):
+def assign_recurrence_pattern(
+    ifc: tool.Ifc, work_time: ifcopenshell.entity_instance, recurrence_type: ifcopenshell.entity_instance
+) -> ifcopenshell.entity_instance:
     return ifc.run("sequence.assign_recurrence_pattern", parent=work_time, recurrence_type=recurrence_type)
 
 
-def unassign_recurrence_pattern(ifc, recurrence_pattern=None):
+def unassign_recurrence_pattern(ifc: tool.Ifc, recurrence_pattern: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.unassign_recurrence_pattern", recurrence_pattern=recurrence_pattern)
 
 
-def add_time_period(ifc, sequence, recurrence_pattern=None):
+def add_time_period(ifc: tool.Ifc, sequence: tool.Sequence, recurrence_pattern: ifcopenshell.entity_instance) -> None:
     start_time, end_time = sequence.get_recurrence_pattern_times()
     ifc.run("sequence.add_time_period", recurrence_pattern=recurrence_pattern, start_time=start_time, end_time=end_time)
     sequence.reset_time_period()
 
 
-def remove_time_period(ifc, time_period=None):
+def remove_time_period(ifc: tool.Ifc, time_period: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.remove_time_period", time_period=time_period)
 
 
-def enable_editing_task_calendar(sequence, task=None):
+def enable_editing_task_calendar(sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     sequence.enable_editing_task_calendar(task)
 
 
-def edit_task_calendar(ifc, sequence, task=None, work_calendar=None):
+def edit_task_calendar(
+    ifc: tool.Ifc,
+    sequence: tool.Sequence,
+    task: ifcopenshell.entity_instance,
+    work_calendar: ifcopenshell.entity_instance,
+) -> None:
     ifc.run("control.assign_control", relating_control=work_calendar, related_object=task)
     ifc.run("sequence.cascade_schedule", task=task)
     sequence.load_task_properties()
 
 
-def remove_task_calendar(ifc, sequence, task=None, work_calendar=None):
+def remove_task_calendar(
+    ifc: tool.Ifc,
+    sequence: tool.Sequence,
+    task: ifcopenshell.entity_instance,
+    work_calendar: ifcopenshell.entity_instance,
+) -> None:
     ifc.run("control.unassign_control", relating_control=work_calendar, related_object=task)
     ifc.run("sequence.cascade_schedule", task=task)
     sequence.load_task_properties()
 
 
-def enable_editing_task_sequence(sequence):
+def enable_editing_task_sequence(sequence: tool.Sequence) -> None:
     sequence.enable_editing_task_sequence()
     sequence.load_task_properties()
 
 
-def disable_editing_task_time(sequence):
+def disable_editing_task_time(sequence: tool.Sequence) -> None:
     sequence.disable_editing_task_time()
 
 
-def enable_editing_sequence_attributes(sequence, rel_sequence=None):
+def enable_editing_sequence_attributes(sequence: tool.Sequence, rel_sequence: ifcopenshell.entity_instance) -> None:
     sequence.enable_editing_rel_sequence_attributes(rel_sequence)
     sequence.load_rel_sequence_attributes(rel_sequence)
 
 
-def enable_editing_sequence_lag_time(sequence, rel_sequence=None, lag_time=None):
+def enable_editing_sequence_lag_time(
+    sequence: tool.Sequence, rel_sequence: ifcopenshell.entity_instance, lag_time: ifcopenshell.entity_instance
+) -> None:
     sequence.load_lag_time_attributes(lag_time)
     sequence.enable_editing_sequence_lag_time(rel_sequence)
 
 
-def unassign_lag_time(ifc, sequence, rel_sequence=None):
+def unassign_lag_time(ifc: tool.Ifc, sequence: tool.Sequence, rel_sequence: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.unassign_lag_time", rel_sequence=rel_sequence)
     sequence.load_task_properties()
 
 
-def assign_lag_time(ifc, rel_sequence=None):
+def assign_lag_time(ifc: tool.Ifc, rel_sequence: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.assign_lag_time", rel_sequence=rel_sequence, lag_value="P1D")
 
 
-def edit_sequence_attributes(ifc, sequence, rel_sequence=None):
+def edit_sequence_attributes(
+    ifc: tool.Ifc, sequence: tool.Sequence, rel_sequence: ifcopenshell.entity_instance
+) -> None:
     attributes = sequence.get_rel_sequence_attributes()
     ifc.run("sequence.edit_sequence", rel_sequence=rel_sequence, attributes=attributes)
     sequence.disable_editing_rel_sequence()
     sequence.load_task_properties()
 
 
-def edit_sequence_lag_time(ifc, sequence, lag_time=None):
+def edit_sequence_lag_time(ifc: tool.Ifc, sequence: tool.Sequence, lag_time: ifcopenshell.entity_instance) -> None:
     attributes = sequence.get_lag_time_attributes()
     ifc.run("sequence.edit_lag_time", lag_time=lag_time, attributes=attributes)
     sequence.disable_editing_rel_sequence()
     sequence.load_task_properties()
 
 
-def disable_editing_rel_sequence(sequence):
+def disable_editing_rel_sequence(sequence: tool.Sequence) -> None:
     sequence.disable_editing_rel_sequence()
 
 
-def select_task_outputs(sequence, spatial, task=None):
+def select_task_outputs(sequence: tool.Sequence, spatial: tool.Spatial, task: ifcopenshell.entity_instance) -> None:
     spatial.select_products(products=sequence.get_task_outputs(task))
 
 
-def select_task_inputs(sequence, spatial, task=None):
+def select_task_inputs(sequence: tool.Sequence, spatial: tool.Spatial, task: ifcopenshell.entity_instance) -> None:
     spatial.select_products(products=sequence.get_task_inputs(task))
 
 
-def select_work_schedule_products(sequence, spatial, work_schedule=None):
+def select_work_schedule_products(
+    sequence: tool.Sequence, spatial: tool.Spatial, work_schedule: ifcopenshell.entity_instance
+) -> None:
     products = sequence.get_work_schedule_products(work_schedule)
     spatial.select_products(products)
 
 
-def select_unassigned_work_schedule_products(ifc, sequence, spatial):
+def select_unassigned_work_schedule_products(ifc: tool.Ifc, sequence: tool.Sequence, spatial: tool.Spatial) -> None:
     spatial.deselect_objects()
     products = ifc.get().by_type("IfcElement")
     work_schedule = sequence.get_active_work_schedule()
@@ -428,11 +488,11 @@ def select_unassigned_work_schedule_products(ifc, sequence, spatial):
     spatial.select_products(selection)
 
 
-def recalculate_schedule(ifc, work_schedule=None):
+def recalculate_schedule(ifc: tool.Ifc, work_schedule: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.recalculate_schedule", work_schedule=work_schedule)
 
 
-def add_task_column(sequence, column_type=None, name=None, data_type=None):
+def add_task_column(sequence: tool.Sequence, column_type: str, name: str, data_type: str) -> None:
     sequence.add_task_column(column_type, name, data_type)
     work_schedule = sequence.get_active_work_schedule()
     if work_schedule:
@@ -440,11 +500,11 @@ def add_task_column(sequence, column_type=None, name=None, data_type=None):
         sequence.load_task_properties()
 
 
-def remove_task_column(sequence, name=None):
+def remove_task_column(sequence: tool.Sequence, name: str) -> None:
     sequence.remove_task_column(name)
 
 
-def set_task_sort_column(sequence, column=None):
+def set_task_sort_column(sequence: tool.Sequence, column: str) -> None:
     sequence.set_task_sort_column(column)
     work_schedule = sequence.get_active_work_schedule()
     if work_schedule:
@@ -452,7 +512,7 @@ def set_task_sort_column(sequence, column=None):
         sequence.load_task_properties()
 
 
-def calculate_task_duration(ifc, sequence, task=None):
+def calculate_task_duration(ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> None:
     ifc.run("sequence.calculate_task_duration", task=task)
     work_schedule = sequence.get_active_work_schedule()
     if work_schedule:
@@ -460,11 +520,11 @@ def calculate_task_duration(ifc, sequence, task=None):
         sequence.load_task_properties()
 
 
-def load_animation_color_scheme(sequence, scheme):
+def load_animation_color_scheme(sequence: tool.Sequence, scheme: Union[ifcopenshell.entity_instance, None]) -> None:
     sequence.load_animation_color_scheme(scheme)
 
 
-def go_to_task(sequence, task=None):
+def go_to_task(sequence: tool.Sequence, task: ifcopenshell.entity_instance) -> Union[None, str]:
     work_schedule = sequence.get_work_schedule(task)
     is_work_schedule_active = sequence.is_work_schedule_active(work_schedule)
     if is_work_schedule_active:
@@ -473,7 +533,7 @@ def go_to_task(sequence, task=None):
         return "Work schedule is not active"
 
 
-def highlight_product_related_task(sequence, spatial, product_type=None):
+def highlight_product_related_task(sequence: tool.Sequence, spatial: tool.Spatial, product_type=None) -> None:
     products = spatial.get_selected_products()
     if products:
         if product_type == "Output":
@@ -487,26 +547,26 @@ def highlight_product_related_task(sequence, spatial, product_type=None):
                 sequence.go_to_task(task)
 
 
-def guess_date_range(sequence, work_schedule=None):
+def guess_date_range(sequence: tool.Sequence, work_schedule: ifcopenshell.entity_instance) -> None:
     start, finish = sequence.guess_date_range(work_schedule)
     sequence.update_visualisation_date(start, finish)
 
 
-def setup_default_task_columns(sequence):
+def setup_default_task_columns(sequence: tool.Sequence) -> None:
     sequence.setup_default_task_columns()
 
 
-def add_task_bars(sequence):
+def add_task_bars(sequence: tool.Sequence) -> None:
     tasks = sequence.get_animation_bar_tasks()
     if tasks:
         sequence.create_bars(tasks)
 
 
-def load_default_animation_color_scheme(sequence):
+def load_default_animation_color_scheme(sequence: tool.Sequence) -> None:
     sequence.load_default_animation_color_scheme()
 
 
-def visualise_work_schedule_date_range(sequence, work_schedule=None):
+def visualise_work_schedule_date_range(sequence: tool.Sequence, work_schedule: ifcopenshell.entity_instance) -> None:
     sequence.clear_objects_animation(include_blender_objects=False)
     settings = sequence.get_animation_settings()
     if settings:
@@ -520,7 +580,7 @@ def visualise_work_schedule_date_range(sequence, work_schedule=None):
         sequence.set_object_shading()
 
 
-def visualise_work_schedule_date(sequence, work_schedule=None):
+def visualise_work_schedule_date(sequence: tool.Sequence, work_schedule: ifcopenshell.entity_instance) -> None:
     sequence.clear_objects_animation(include_blender_objects=False)
     start_date = sequence.get_start_date()
     product_states = sequence.process_construction_state(work_schedule, start_date)
@@ -528,12 +588,12 @@ def visualise_work_schedule_date(sequence, work_schedule=None):
     sequence.set_object_shading()
 
 
-def generate_gantt_chart(sequence, work_schedule):
+def generate_gantt_chart(sequence: tool.Sequence, work_schedule: ifcopenshell.entity_instance) -> None:
     json = sequence.create_tasks_json(work_schedule)
     sequence.generate_gantt_browser_chart(json, work_schedule)
 
 
-def load_product_related_tasks(sequence, product=None):
+def load_product_related_tasks(sequence: tool.Sequence, product: ifcopenshell.entity_instance) -> Union[None, str]:
     filter_by_schedule = sequence.is_filter_by_active_schedule()
     if filter_by_schedule:
         work_schedule = sequence.get_active_work_schedule()
@@ -546,7 +606,9 @@ def load_product_related_tasks(sequence, product=None):
     sequence.load_product_related_tasks(task_inputs, task_ouputs)
 
 
-def reorder_task_nesting(ifc, sequence, task, new_index):
+def reorder_task_nesting(
+    ifc: tool.Ifc, sequence: tool.Sequence, task: ifcopenshell.entity_instance, new_index: int
+) -> Union[None, str]:
     is_sorting_enabled = sequence.is_sorting_enabled()
     is_sort_reversed = sequence.is_sort_reversed()
     if is_sorting_enabled or is_sort_reversed:
@@ -558,17 +620,19 @@ def reorder_task_nesting(ifc, sequence, task, new_index):
         sequence.load_task_properties()
 
 
-def create_baseline(ifc, sequence, work_schedule, name):
+def create_baseline(
+    ifc: tool.Ifc, sequence: tool.Sequence, work_schedule: ifcopenshell.entity_instance, name: Optional[str] = None
+) -> None:
     ifc.run("sequence.create_baseline", work_schedule=work_schedule, name=name)
 
 
-def clear_previous_animation(sequence):
+def clear_previous_animation(sequence: tool.Sequence) -> None:
     sequence.clear_objects_animation(include_blender_objects=False)
 
 
-def add_animation_camera(sequence):
+def add_animation_camera(sequence: tool.Sequence) -> None:
     sequence.add_animation_camera()
 
 
-def save_animation_color_scheme(sequence, name):
+def save_animation_color_scheme(sequence: tool.Sequence, name: str) -> None:
     sequence.save_animation_color_scheme(name)

src/blenderbim/blenderbim/core/spatial.py

@@ -18,11 +18,11 @@
 
 from __future__ import annotations
 from typing import TYPE_CHECKING, Optional, Union
-import blenderbim.core.tool as tool
 
 if TYPE_CHECKING:
     import bpy
     import ifcopenshell
+    import blenderbim.tool as tool
 
 
 def reference_structure(

src/blenderbim/blenderbim/core/system.py

@@ -94,7 +94,7 @@ def hide_ports(ifc, system, element=None):
 def add_port(ifc, system, element=None):
     system.load_ports(element, system.get_ports(element))
     obj = system.create_empty_at_cursor_with_element_orientation(element)
-    port = system.run_root_assign_class(obj=obj, ifc_class="IfcDistributionPort")
+    port = system.run_root_assign_class(obj=obj, ifc_class="IfcDistributionPort", should_add_representation=False)
     ifc.run("system.assign_port", element=element, port=port)
 
 

src/blenderbim/blenderbim/core/tool.py

@@ -487,12 +487,12 @@ class Material:
     def disable_editing_materials(cls): pass
     def enable_editing_material(cls, material): pass
     def enable_editing_materials(cls): pass
-    def get_active_material_type(cls): pass
     def get_active_material(cls): pass
+    def get_active_material_type(cls): pass
     def get_active_object_material(cls, obj): pass
     def get_elements_by_material(cls, material): pass
-    def get_material_attributes(cls): pass
     def get_material(cls, element, should_inherit): pass
+    def get_material_attributes(cls): pass
     def get_name(cls, obj): pass
     def get_type(cls, element): pass
     def has_material_profile(cls, element): pass
@@ -503,6 +503,7 @@ class Material:
     def is_material_used_in_sets(cls, material): pass
     def load_material_attributes(cls, material): pass
     def replace_material_with_material_profile(cls, element): pass
+    def sync_blender_material_name(cls, material): pass
 
 
 @interface
@@ -617,9 +618,20 @@ class Profile:
 
 @interface
 class Pset:
+    def add_proposed_property(cls, name, value, props): pass
+    def cast_string_to_primitive(cls, value: str): pass
+    def clear_blender_pset_properties(cls, props): pass
+    def enable_proposed_pset(cls, props, pset_name, pset_type, has_template): pass
     def get_element_pset(cls, element, pset_name): pass
-    def get_pset_name(cls, obj, obj_type): pass
+    def get_prop_template_primitive_type(cls, prop_template): pass
+    def get_pset_name(cls, obj, obj_type, pset_type): pass
+    def get_pset_template(cls, name): pass
+    def import_enumerated_value_from_template(cls, prop_template, data, props): pass
+    def import_pset_from_existing(cls, pset, props): pass
+    def import_pset_from_template(cls, pset_template, pset, props): pass
+    def import_single_value_from_template(cls, pset_template, prop_template, data, props): pass
     def is_pset_applicable(cls,element, pset_name): pass
+    def set_active_pset(cls, props, pset, has_template): pass
 
 
 @interface

src/blenderbim/blenderbim/tool/blender.py

@@ -468,15 +468,41 @@ class Blender(blenderbim.core.tool.Blender):
             active_object.select_set(True)
 
     @classmethod
-    def enum_property_has_valid_index(cls, props, prop_name: str, enum_items: tuple) -> bool:
+    def get_enum_safe(cls, props: bpy.types.PropertyGroup, prop_name: str) -> Union[str, None]:
         """method created for readibility and to avoid console warnings like
         `pyrna_enum_to_py: current value '17' matches no enum in 'BIMModelProperties', '', 'relating_type_id'`
         """
-        current_value_index = props.get(prop_name, None)
-        # assuming the default value is fine
-        if current_value_index is None:
-            return True
-        return current_value_index < len(enum_items)
+        # Yes, accessing items through annotations is a bit hacky
+        # but it's the only way to get the dynamic enum items
+        # besides providing them to get_enum_safe explicitly.
+        prop_keywords = props.__annotations__[prop_name].keywords
+        items = prop_keywords.get("items")
+        if items is None:
+            return None
+        if not isinstance(items, (list, tuple)):
+            # items are retrieved through a callback, not a static list / tuple :
+            items = items(props, bpy.context)
+
+        items_amount = len(items)
+        # If enum has no items it seems to always produce a warning.
+        # E.g. if you try to get it's value directly: `BIMModelProperties.relating_type_id`.
+        if items_amount == 0:
+            return None
+
+        index = props.get(prop_name)
+        # If value was never changed (still default), we can just retrieve it from the enum.
+        if index is None:
+            default_value = prop_keywords.get("default", 0)
+            if isinstance(default_value, int):
+                index = default_value
+            else:
+                # If default value is a string then it's a static enum
+                # and we can just return it.
+                return default_value
+        # Ensure index is valid.
+        if items_amount > index >= 0:
+            return items[index][0]
+        return None
 
     @classmethod
     def append_data_block(cls, filepath: str, data_block_type: str, name: str, link=False, relative=False) -> dict:

src/blenderbim/blenderbim/tool/cost.py

@@ -1,11 +1,14 @@
 import os
 import bpy
+import blenderbim.core.tool
 import blenderbim.tool as tool
+import ifcopenshell.util.element
 import ifcopenshell.util.date
 import ifcopenshell.util.cost
 import ifcopenshell.util.unit
 import blenderbim.bim.helper
 import json
+from typing import Optional, Any, Generator, Union
 
 
 class Cost(blenderbim.core.tool.Cost):
@@ -16,9 +19,59 @@ class Cost(blenderbim.core.tool.Cost):
 
     @classmethod
     def disable_editing_cost_schedule(cls):
+        cls.store_active_schedule_columns()
         bpy.context.scene.BIMCostProperties.active_cost_schedule_id = 0
         cls.disable_editing_cost_item()
 
+    @classmethod
+    def load_active_schedule_columns(cls) -> None:
+        props = bpy.context.scene.BIMCostProperties
+        active_columns = props.columns
+        storage = props.columns_storage
+        active_cost_schedule_id = cls.get_active_cost_schedule().id()
+
+        # store column names to keep the original order
+        cols_to_add = []
+
+        # collection property only support removal by index
+        for storage_col_i, storage_col in reversed(list(enumerate(storage[:]))):
+            if storage_col.schedule_id != active_cost_schedule_id:
+                continue
+            cols_to_add.insert(0, storage_col.name)
+            # We don't store active schedule columns in storage
+            # so it will be easy to edit them.
+            storage.remove(storage_col_i)
+
+        for col_name in cols_to_add:
+            col = active_columns.add()
+            col.name = col_name
+
+    @classmethod
+    def store_active_schedule_columns(cls) -> None:
+        props = bpy.context.scene.BIMCostProperties
+        active_columns = props.columns
+        storage = props.columns_storage
+        active_cost_schedule_id = cls.get_active_cost_schedule().id()
+
+        for col in active_columns:
+            storage_col = storage.add()
+            storage_col.name = col.name
+            storage_col.schedule_id = active_cost_schedule_id
+
+        props.columns.clear()
+
+    @classmethod
+    def remove_stored_schedule_columns(cls, cost_schedule: ifcopenshell.entity_instance) -> None:
+        props = bpy.context.scene.BIMCostProperties
+        storage = props.columns_storage
+        active_cost_schedule_id = cost_schedule.id()
+
+        # collection property only support removal by index
+        for storage_col_i, storage_col in reversed(list(enumerate(storage[:]))):
+            if storage_col.schedule_id != active_cost_schedule_id:
+                continue
+            storage.remove(storage_col_i)
+
     @classmethod
     def enable_editing_cost_schedule_attributes(cls, cost_schedule):
         bpy.context.scene.BIMCostProperties.active_cost_schedule_id = cost_schedule.id()
@@ -36,7 +89,7 @@ class Cost(blenderbim.core.tool.Cost):
         blenderbim.bim.helper.import_attributes2(cost_schedule, props.cost_schedule_attributes, callback=special_import)
 
     @classmethod
-    def enable_editing_cost_items(cls, cost_schedule):
+    def enable_editing_cost_items(cls, cost_schedule: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMCostProperties
         props.active_cost_schedule_id = cost_schedule.id()
         props.is_editing = "COST_ITEMS"
@@ -147,7 +200,7 @@ class Cost(blenderbim.core.tool.Cost):
         return blenderbim.bim.helper.export_attributes(props.cost_item_attributes)
 
     @classmethod
-    def get_active_cost_item(cls):
+    def get_active_cost_item(cls) -> Union[ifcopenshell.entity_instance, None]:
         props = bpy.context.scene.BIMCostProperties
         if not props.active_cost_item_id:
             return None
@@ -163,7 +216,7 @@ class Cost(blenderbim.core.tool.Cost):
         return
 
     @classmethod
-    def load_cost_item_types(cls, cost_item=None):
+    def load_cost_item_types(cls, cost_item: Optional[ifcopenshell.entity_instance] = None) -> None:
         if not cost_item:
             cost_item = cls.get_highlighted_cost_item()
             if not cost_item:
@@ -186,7 +239,7 @@ class Cost(blenderbim.core.tool.Cost):
                 new.name = related_object.Name or "Unnamed"
 
     @classmethod
-    def load_cost_item_quantity_assignments(cls, cost_item, related_object_type):
+    def load_cost_item_quantity_assignments(cls, cost_item: ifcopenshell.entity_instance, related_object_type):
         def create_list_items(collection, cost_item, is_deep):
             products = cls.get_cost_item_assignments(cost_item, filter_by_type=related_object_type, is_deep=False)
             for product in products:
@@ -215,12 +268,16 @@ class Cost(blenderbim.core.tool.Cost):
             create_list_items(props.cost_item_resources, cost_item, is_deep)
 
     @classmethod
-    def calculate_parametric_quantity(cls, cost_item=None, product=None):
+    def calculate_parametric_quantity(
+        cls, cost_item: ifcopenshell.entity_instance, product: ifcopenshell.entity_instance
+    ) -> tuple[float, Union[str, None]]:
         quantities, unit = cls.get_assigned_quantities(cost_item, product)
         return sum(quantity[3] for quantity in quantities), unit
 
     @classmethod
-    def get_assigned_quantities(cls, cost_item, product):
+    def get_assigned_quantities(
+        cls, cost_item: ifcopenshell.entity_instance, product: ifcopenshell.entity_instance
+    ) -> tuple[list[ifcopenshell.entity_instance], Union[str, None]]:
         selected_quantitites = []
         unit = ""
         for quantities in ifcopenshell.util.element.get_psets(product, qtos_only=True).values():
@@ -259,7 +316,7 @@ class Cost(blenderbim.core.tool.Cost):
         blenderbim.bim.helper.import_attributes2(physical_quantity, props.quantity_attributes)
 
     @classmethod
-    def enable_editing_cost_item_values(cls, cost_item=None):
+    def enable_editing_cost_item_values(cls, cost_item: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMCostProperties
         props.active_cost_item_id = cost_item.id()
         props.cost_item_editing_type = "VALUES"
@@ -287,7 +344,7 @@ class Cost(blenderbim.core.tool.Cost):
         return attributes
 
     @classmethod
-    def load_cost_item_value_attributes(cls, cost_value=None):
+    def load_cost_item_value_attributes(cls, cost_value: ifcopenshell.entity_instance) -> None:
         def import_attributes(name, prop, data, cost_value, is_rates, props_collection):
             if name == "AppliedValue":
                 # TODO: for now, only support simple IfcValues (which are effectively IfcMonetaryMeasure)
@@ -334,36 +391,38 @@ class Cost(blenderbim.core.tool.Cost):
         blenderbim.bim.helper.import_attributes2(cost_value, props.cost_value_attributes, callback=callback)
 
     @classmethod
-    def calculate_applied_value(cls, cost_item, cost_value):
+    def calculate_applied_value(
+        cls, cost_item: ifcopenshell.entity_instance, cost_value: ifcopenshell.entity_instance
+    ) -> float:
         return ifcopenshell.util.cost.calculate_applied_value(cost_item, cost_value)
 
     @classmethod
-    def is_active_schedule_of_rates(cls):
+    def is_active_schedule_of_rates(cls) -> bool:
         return (
             tool.Ifc.get().by_id(bpy.context.scene.BIMCostProperties.active_cost_schedule_id).PredefinedType
             == "SCHEDULEOFRATES"
         )
 
     @classmethod
-    def enable_editing_cost_item_value(cls, cost_value=None):
+    def enable_editing_cost_item_value(cls, cost_value: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMCostProperties
         props.active_cost_value_id = cost_value.id()
         props.cost_value_editing_type = "ATTRIBUTES"
 
     @classmethod
-    def disable_editing_cost_item_value(cls):
+    def disable_editing_cost_item_value(cls) -> None:
         props = bpy.context.scene.BIMCostProperties
         props.active_cost_value_id = 0
         props.cost_value_editing_type = ""
 
     @classmethod
-    def load_cost_item_value_formula_attributes(cls, cost_value=None):
+    def load_cost_item_value_formula_attributes(cls, cost_value: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMCostProperties
         props.cost_value_attributes.clear()
         bpy.context.scene.BIMCostProperties.cost_value_formula = ifcopenshell.util.cost.serialise_cost_value(cost_value)
 
     @classmethod
-    def enable_editing_cost_item_value_formula(cls, cost_value=None):
+    def enable_editing_cost_item_value_formula(cls, cost_value: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMCostProperties
         props.active_cost_value_id = cost_value.id()
         props.cost_value_editing_type = "FORMULA"
@@ -373,7 +432,7 @@ class Cost(blenderbim.core.tool.Cost):
         return bpy.context.scene.BIMCostProperties.cost_value_formula
 
     @classmethod
-    def get_cost_value_attributes(cls):
+    def get_cost_value_attributes(cls) -> dict[str, Any]:
         def export_attributes(attributes, prop):
             if prop.name == "UnitBasisValue":
                 if prop.is_null:
@@ -392,13 +451,18 @@ class Cost(blenderbim.core.tool.Cost):
         return blenderbim.bim.helper.export_attributes(props.cost_value_attributes, callback)
 
     @classmethod
-    def get_cost_value_unit_component(cls):
+    def get_cost_value_unit_component(cls) -> ifcopenshell.entity_instance:
         return tool.Ifc.get().by_id(
             int(bpy.context.scene.BIMCostProperties.cost_value_attributes.get("UnitBasisUnit").enum_value)
         )
 
     @classmethod
-    def get_cost_item_assignments(cls, cost_item, filter_by_type=None, is_deep=False):
+    def get_cost_item_assignments(
+        cls,
+        cost_item: ifcopenshell.entity_instance,
+        filter_by_type: Optional[ifcopenshell.util.cost.FILTER_BY_TYPE] = None,
+        is_deep: bool = False,
+    ) -> list[ifcopenshell.entity_instance]:
         return ifcopenshell.util.cost.get_cost_item_assignments(
             cost_item, filter_by_type=filter_by_type, is_deep=is_deep
         )
@@ -408,30 +472,40 @@ class Cost(blenderbim.core.tool.Cost):
         return bpy.context.scene.BIMCostProperties.show_nested_elements
 
     @classmethod
-    def get_cost_item_products(cls, cost_item, is_deep=False):
+    def get_cost_item_products(
+        cls, cost_item: ifcopenshell.entity_instance, is_deep: bool = False
+    ) -> list[ifcopenshell.entity_instance]:
         return cls.get_cost_item_assignments(cost_item, filter_by_type="PRODUCT", is_deep=is_deep)
 
     @classmethod
-    def get_cost_item_resources(cls, cost_item, is_deep=False):
+    def get_cost_item_resources(
+        cls, cost_item: ifcopenshell.entity_instance, is_deep: bool = False
+    ) -> list[ifcopenshell.entity_instance]:
         return cls.get_cost_item_assignments(cost_item, filter_by_type="RESOURCE", is_deep=is_deep)
 
     @classmethod
-    def get_cost_item_processes(cls, cost_item, is_deep=False):
+    def get_cost_item_processes(
+        cls, cost_item: ifcopenshell.entity_instance, is_deep: bool = False
+    ) -> list[ifcopenshell.entity_instance]:
         return cls.get_cost_item_assignments(cost_item, filter_by_type="PROCESS", is_deep=is_deep)
 
     @classmethod
-    def get_schedule_cost_items(cls, cost_schedule):
+    def get_schedule_cost_items(
+        cls, cost_schedule: ifcopenshell.entity_instance
+    ) -> Generator[ifcopenshell.entity_instance, None, None]:
         return ifcopenshell.util.cost.get_schedule_cost_items(cost_schedule)
 
     @classmethod
-    def get_cost_schedule_products(cls, cost_schedule):
+    def get_cost_schedule_products(
+        cls, cost_schedule: ifcopenshell.entity_instance
+    ) -> list[ifcopenshell.entity_instance]:
         products = []
         for cost_item in ifcopenshell.util.cost.get_schedule_cost_items(cost_schedule):
             products.extend(cls.get_cost_item_products(cost_item))
         return products
 
     @classmethod
-    def import_cost_schedule_csv(cls, file_path=None, is_schedule_of_rates=False):
+    def import_cost_schedule_csv(cls, file_path: Optional[str] = None, is_schedule_of_rates: bool = False) -> None:
         if not file_path:
             return
         from ifc5d.csv2ifc import Csv2Ifc
@@ -446,13 +520,13 @@ class Cost(blenderbim.core.tool.Cost):
         print("Import finished in {:.2f} seconds".format(time.time() - start))
 
     @classmethod
-    def add_cost_column(cls, name):
+    def add_cost_column(cls, name: str) -> None:
         props = bpy.context.scene.BIMCostProperties
         new = props.columns.add()
         new.name = name
 
     @classmethod
-    def remove_cost_column(cls, name):
+    def remove_cost_column(cls, name: str) -> None:
         props = bpy.context.scene.BIMCostProperties
         props.columns.remove(props.columns.find(name))
 
@@ -473,7 +547,9 @@ class Cost(blenderbim.core.tool.Cost):
         cls.load_schedule_of_rates_tree(schedule_of_rates=tool.Ifc.get().by_id(int(props.schedule_of_rates)))
 
     @classmethod
-    def create_new_cost_item_li(cls, props_collection, cost_item, level_index, type="cost_rate"):
+    def create_new_cost_item_li(
+        cls, props_collection, cost_item: ifcopenshell.entity_instance, level_index: int, type: str = "cost_rate"
+    ) -> None:
         new = props_collection.add()
         new.ifc_definition_id = cost_item.id()
         new.name = cost_item.Name or "Unnamed"
@@ -508,7 +584,7 @@ class Cost(blenderbim.core.tool.Cost):
         props.is_cost_update_enabled = True
 
     @classmethod
-    def export_cost_schedules(cls, filepath, format=None, cost_schedule=None):
+    def export_cost_schedules(cls, filepath: str, format: str, cost_schedule=None):
         import subprocess
         import os
         import sys
@@ -621,7 +697,7 @@ class Cost(blenderbim.core.tool.Cost):
         return bool(cost_items)
 
     @classmethod
-    def load_product_cost_items(cls, product):
+    def load_product_cost_items(cls, product: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMCostProperties
         props.is_cost_update_enabled = False
         props.product_cost_items.clear()

src/blenderbim/blenderbim/tool/drawing.py

@@ -51,11 +51,14 @@ from blenderbim.bim.module.drawing.prop import get_diagram_scales, BOX_ALIGNMENT
 from lxml import etree
 from mathutils import Vector, Matrix
 from fractions import Fraction
-from typing import Optional, Union, Iterable, Any
+from typing import Optional, Union, Iterable, Any, Literal
 from pathlib import Path
 
 
 class Drawing(blenderbim.core.tool.Drawing):
+    ANNOTATION_DATA_TYPE = Literal["empty", "curve", "mesh"]
+    DOCUMENT_TYPE = Literal["SCHEDULE", "REFERENCE"]
+
     @classmethod
     def canonicalise_class_name(cls, name):
         return re.sub("[^0-9a-zA-Z]+", "", name)
@@ -68,11 +71,11 @@ class Drawing(blenderbim.core.tool.Drawing):
             )
 
     @classmethod
-    def get_annotation_data_type(cls, object_type):
+    def get_annotation_data_type(cls, object_type: str) -> ANNOTATION_DATA_TYPE:
         return ANNOTATION_TYPES_DATA[object_type][3]
 
     @classmethod
-    def create_annotation_object(cls, drawing, object_type):
+    def create_annotation_object(cls, drawing: ifcopenshell.entity_instance, object_type: str) -> bpy.types.Object:
         data_type = cls.get_annotation_data_type(object_type)
         obj = annotation.Annotator.get_annotation_obj(drawing, object_type, data_type)
         if object_type == "FILL_AREA":
@@ -298,15 +301,15 @@ class Drawing(blenderbim.core.tool.Drawing):
         bpy.context.scene.DocProperties.is_editing_sheets = False
 
     @classmethod
-    def disable_editing_text(cls, obj):
+    def disable_editing_text(cls, obj: bpy.types.Object) -> None:
         obj.BIMTextProperties.is_editing = False
 
     @classmethod
-    def disable_editing_assigned_product(cls, obj):
+    def disable_editing_assigned_product(cls, obj: bpy.types.Object) -> None:
         obj.BIMAssignedProductProperties.is_editing_product = False
 
     @classmethod
-    def enable_editing(cls, obj):
+    def enable_editing(cls, obj: bpy.types.Object) -> None:
         bpy.ops.object.select_all(action="DESELECT")
         bpy.context.view_layer.objects.active = obj
         obj.select_set(True)
@@ -330,11 +333,11 @@ class Drawing(blenderbim.core.tool.Drawing):
         bpy.context.scene.DocProperties.is_editing_sheets = True
 
     @classmethod
-    def enable_editing_text(cls, obj):
+    def enable_editing_text(cls, obj: bpy.types.Object) -> None:
         obj.BIMTextProperties.is_editing = True
 
     @classmethod
-    def enable_editing_assigned_product(cls, obj):
+    def enable_editing_assigned_product(cls, obj: bpy.types.Object) -> None:
         obj.BIMAssignedProductProperties.is_editing_product = True
 
     @classmethod
@@ -428,7 +431,7 @@ class Drawing(blenderbim.core.tool.Drawing):
                     return location
 
     @classmethod
-    def get_path_filename(cls, path):
+    def get_path_filename(cls, path: str) -> str:
         return os.path.splitext(os.path.basename(path))[0]
 
     @classmethod
@@ -483,7 +486,7 @@ class Drawing(blenderbim.core.tool.Drawing):
         return ""
 
     @classmethod
-    def get_name(cls, element):
+    def get_name(cls, element: ifcopenshell.entity_instance) -> Union[str, None]:
         return element.Name
 
     @classmethod
@@ -563,7 +566,7 @@ class Drawing(blenderbim.core.tool.Drawing):
         ifcopenshell.util.element.remove_deep2(ifc_file, literal)
 
     @classmethod
-    def synchronise_ifc_and_text_attributes(cls, obj):
+    def synchronise_ifc_and_text_attributes(cls, obj: bpy.types.Object) -> None:
         literals = cls.get_text_literal(obj, return_list=True)
         literals_attributes = cls.export_text_literal_attributes(obj)
         defined_ifc_ids = [l.ifc_definition_id for l in obj.BIMTextProperties.literals]
@@ -784,7 +787,7 @@ class Drawing(blenderbim.core.tool.Drawing):
                 new.ifc_definition_id = drawing.id()  # Last, to prevent unnecessary prop callbacks
 
     @classmethod
-    def import_documents(cls, document_type):
+    def import_documents(cls, document_type: DOCUMENT_TYPE) -> None:
         dprops = bpy.context.scene.DocProperties
         if document_type == "SCHEDULE":
             documents_collection = dprops.schedules
@@ -845,7 +848,7 @@ class Drawing(blenderbim.core.tool.Drawing):
         return next(s for s in props.sheets[: props.active_sheet_index + 1][::-1] if s.is_sheet)
 
     @classmethod
-    def import_text_attributes(cls, obj):
+    def import_text_attributes(cls, obj: bpy.types.Object) -> None:
         props = obj.BIMTextProperties
         props.literals.clear()
 
@@ -863,7 +866,7 @@ class Drawing(blenderbim.core.tool.Drawing):
         props.font_size = str(text_data["FontSize"])
 
     @classmethod
-    def import_assigned_product(cls, obj):
+    def import_assigned_product(cls, obj: bpy.types.Object) -> None:
         element = tool.Ifc.get_entity(obj)
         product = cls.get_assigned_product(element)
         if product:
@@ -934,38 +937,16 @@ class Drawing(blenderbim.core.tool.Drawing):
         bpy.context.scene.DocProperties.should_draw_decorations = True
 
     @classmethod
-    def update_text_value(cls, obj):
-        element = tool.Ifc.get_entity(obj)
-        if element.is_a("IfcTypeProduct"):
-            objs = [obj]
-            for occurrence in ifcopenshell.util.element.get_types(element):
-                obj = tool.Ifc.get_object(occurrence)
-                if obj:
-                    objs.append(obj)
-        else:
-            objs = []
-            element_type = ifcopenshell.util.element.get_type(element)
-            if element_type and element_type.RepresentationMaps:
-                obj = tool.Ifc.get_object(element_type)
-                if obj:
-                    objs.append(obj)
-                for occurrence in ifcopenshell.util.element.get_types(element_type):
-                    obj = tool.Ifc.get_object(occurrence)
-                    if obj:
-                        objs.append(obj)
-            else:
-                objs = [obj]
-
-        for obj in objs:
-            props = obj.BIMTextProperties
-            literals = cls.get_text_literal(obj, return_list=True)
-            cls.import_text_attributes(obj)
-            for i, literal in enumerate(literals):
-                product = cls.get_assigned_product(tool.Ifc.get_entity(obj)) or tool.Ifc.get_entity(obj)
-                props.literals[i].value = cls.replace_text_literal_variables(literal.Literal, product)
+    def update_text_value(cls, obj: bpy.types.Object) -> None:
+        props = obj.BIMTextProperties
+        literals = cls.get_text_literal(obj, return_list=True)
+        cls.import_text_attributes(obj)
+        for i, literal in enumerate(literals):
+            product = cls.get_assigned_product(tool.Ifc.get_entity(obj)) or tool.Ifc.get_entity(obj)
+            props.literals[i].value = cls.replace_text_literal_variables(literal.Literal, product)
 
     @classmethod
-    def update_text_size_pset(cls, obj):
+    def update_text_size_pset(cls, obj: bpy.types.Object) -> None:
         """updates pset `EPset_Annotation.Classes` value
         based on current font size from `obj.BIMTextProperties.font_size`
         """
@@ -1544,7 +1525,7 @@ class Drawing(blenderbim.core.tool.Drawing):
         tool.Geometry.record_object_position(obj)
 
     @classmethod
-    def get_document_references(cls, document):
+    def get_document_references(cls, document: ifcopenshell.entity_instance) -> list[ifcopenshell.entity_instance]:
         if tool.Ifc.get_schema() == "IFC2X3":
             return document.DocumentReferences or []
         return document.HasDocumentReferences or []
@@ -1575,7 +1556,9 @@ class Drawing(blenderbim.core.tool.Drawing):
         return reference.Description
 
     @classmethod
-    def generate_reference_attributes(cls, reference: ifcopenshell.entity_instance, **attributes: Any) -> dict[str, Any]:
+    def generate_reference_attributes(
+        cls, reference: ifcopenshell.entity_instance, **attributes: Any
+    ) -> dict[str, Any]:
         """will automatically convert attributes below for IFC2X3 compatibility:
 
         - Identification -> ItemReference
@@ -1657,23 +1640,22 @@ class Drawing(blenderbim.core.tool.Drawing):
                 base_elements = set(ifc_file.by_type("IfcElement") + ifc_file.by_type("IfcSpatialElement"))
             elements = {e for e in (elements & base_elements) if e.is_a() != "IfcSpace"}
 
-        
         updated_set = set()
 
         for i in elements:
             # exclude annotations to avoid including annotations from other drawings
-            if not i.is_a("IfcAnnotation"): 
+            if not i.is_a("IfcAnnotation"):
                 updated_set.add(i)
-                #add aggregate too, if element is host by one
+                # add aggregate too, if element is host by one
                 if i.Decomposes:
                     aggregate = i.Decomposes[0].RelatingObject
-                    #remove IfcProject for class iterator. See https://github.com/IfcOpenShell/IfcOpenShell/issues/4361#issuecomment-2081223615
-                    if not aggregate.is_a("IfcProject"): 
+                    # remove IfcProject for class iterator. See https://github.com/IfcOpenShell/IfcOpenShell/issues/4361#issuecomment-2081223615
+                    if not aggregate.is_a("IfcProject"):
                         updated_set.add(aggregate)
 
-        # After the iteration is complete, update elements with updated set 
+        # After the iteration is complete, update elements with updated set
         elements.update(updated_set)
-            
+
         # add annotations from the current drawing
         annotations = tool.Drawing.get_group_elements(tool.Drawing.get_drawing_group(drawing))
         elements.update(annotations)
@@ -1716,7 +1698,7 @@ class Drawing(blenderbim.core.tool.Drawing):
         return reference.ReferencedDocument
 
     @classmethod
-    def select_assigned_product(cls, context):
+    def select_assigned_product(cls, context: bpy.types.Context) -> None:
         obj = context.active_object
         element = tool.Ifc.get_entity(obj)
         product = cls.get_assigned_product(element)
@@ -1735,7 +1717,7 @@ class Drawing(blenderbim.core.tool.Drawing):
         return True if (camera and camera.data.type == "ORTHO") else False
 
     @classmethod
-    def is_active_drawing(cls, drawing):
+    def is_active_drawing(cls, drawing: ifcopenshell.entity_instance) -> bool:
         return drawing.id() == bpy.context.scene.DocProperties.active_drawing_id
 
     @classmethod

src/blenderbim/blenderbim/tool/geometry.py

@@ -24,8 +24,10 @@ import logging
 import numpy as np
 import ifcopenshell
 import ifcopenshell.api
+import ifcopenshell.geom
 import ifcopenshell.guid
 import ifcopenshell.util.element
+import ifcopenshell.util.representation
 import ifcopenshell.util.system
 import blenderbim.core.tool
 import blenderbim.core.drawing
@@ -88,7 +90,7 @@ class Geometry(blenderbim.core.tool.Geometry):
         bpy.data.meshes.remove(data)
 
     @classmethod
-    def delete_ifc_object(cls, obj):
+    def delete_ifc_object(cls, obj: bpy.types.Object) -> None:
         element = tool.Ifc.get_entity(obj)
         if not element:
             return
@@ -319,7 +321,7 @@ class Geometry(blenderbim.core.tool.Geometry):
         return new_mesh
 
     @classmethod
-    def get_active_representation(cls, obj):
+    def get_active_representation(cls, obj: bpy.types.Object) -> Union[ifcopenshell.entity_instance, None]:
         """< IfcShapeRepresentation or None"""
         if obj.data and hasattr(obj.data, "BIMMeshProperties") and obj.data.BIMMeshProperties.ifc_definition_id:
             return tool.Ifc.get().by_id(obj.data.BIMMeshProperties.ifc_definition_id)
@@ -459,7 +461,9 @@ class Geometry(blenderbim.core.tool.Geometry):
         return f"{representation.ContextOfItems.id()}/{representation.id()}"
 
     @classmethod
-    def get_styles(cls, obj, only_assigned_to_faces=False):
+    def get_styles(
+        cls, obj: bpy.types.Object, only_assigned_to_faces: bool = False
+    ) -> list[Union[ifcopenshell.entity_instance, None]]:
         styles = [tool.Style.get_style(s.material) for s in obj.material_slots if s.material]
         if not only_assigned_to_faces:
             return styles
@@ -467,8 +471,15 @@ class Geometry(blenderbim.core.tool.Geometry):
         usage_count = [0] * len(obj.material_slots)
         if not usage_count:  # if there are no materials, polygons will still use index 0
             return []
+
         for poly in obj.data.polygons:
             usage_count[poly.material_index] += 1
+
+        # remove usages for empty material slots
+        for i, slot in reversed(list(enumerate(obj.material_slots))):
+            if not slot.material:
+                del usage_count[i]
+
         styles = [style for style, usage in zip(styles, usage_count, strict=True) if usage > 0]
         return styles
 
@@ -560,11 +571,11 @@ class Geometry(blenderbim.core.tool.Geometry):
                             new.value = element[i]
 
     @classmethod
-    def is_body_representation(cls, representation):
+    def is_body_representation(cls, representation: ifcopenshell.entity_instance) -> bool:
         return representation.ContextOfItems.ContextIdentifier == "Body"
 
     @classmethod
-    def is_box_representation(cls, representation):
+    def is_box_representation(cls, representation: ifcopenshell.entity_instance) -> bool:
         return representation.ContextOfItems.ContextIdentifier == "Box"
 
     @classmethod
@@ -572,11 +583,11 @@ class Geometry(blenderbim.core.tool.Geometry):
         return not all([tool.Cad.is_x(o, 1.0) for o in obj.scale]) or obj in IfcStore.edited_objs
 
     @classmethod
-    def is_mapped_representation(cls, representation):
+    def is_mapped_representation(cls, representation: ifcopenshell.entity_instance) -> bool:
         return representation.RepresentationType == "MappedRepresentation"
 
     @classmethod
-    def is_meshlike(cls, representation):
+    def is_meshlike(cls, representation: ifcopenshell.entity_instance) -> bool:
         if ifcopenshell.util.representation.resolve_representation(representation).RepresentationType in (
             "AdvancedBrep",
             "Annotation2D",
@@ -656,7 +667,9 @@ class Geometry(blenderbim.core.tool.Geometry):
         bpy.data.objects.remove(obj)
 
     @classmethod
-    def resolve_mapped_representation(cls, representation):
+    def resolve_mapped_representation(
+        cls, representation: ifcopenshell.entity_instance
+    ) -> ifcopenshell.entity_instance:
         if representation.RepresentationType == "MappedRepresentation":
             return cls.resolve_mapped_representation(representation.Items[0].MappingSource.MappedRepresentation)
         return representation

src/blenderbim/blenderbim/tool/material.py

@@ -242,3 +242,16 @@ class Material(blenderbim.core.tool.Material):
             meshes_to_objects[mesh] = obj
         for obj in meshes_to_objects.values():
             tool.Geometry.reload_representation(obj)
+
+    @classmethod
+    def sync_blender_material_name(cls, material):
+        name = material.Name or "Unnamed"
+        obj = tool.Ifc.get_object(material)
+        if obj:
+            obj.name = name
+        style = tool.Style.get_style(obj)
+        if style:
+            style.Name = name
+            obj = tool.Ifc.get_object(style)
+            if obj:
+                obj.name = name

src/blenderbim/blenderbim/tool/misc.py

@@ -97,7 +97,9 @@ class Misc(blenderbim.core.tool.Misc):
         IfcStore.edited_objs.add(obj)
 
     @classmethod
-    def split_objects_with_cutter(cls, objs, cutter):
+    def split_objects_with_cutter(
+        cls, objs: list[bpy.types.Object], cutter: bpy.types.Object
+    ) -> list[bpy.types.Object]:
         cutter_mesh = cutter.data
 
         bm = bmesh.new()

src/blenderbim/blenderbim/tool/model.py

@@ -23,9 +23,11 @@ import collections
 import collections.abc
 import numpy as np
 import ifcopenshell
+import ifcopenshell.util.element
 import ifcopenshell.util.unit
 import ifcopenshell.util.placement
 import ifcopenshell.util.representation
+import blenderbim.core.geometry
 import blenderbim.core.tool
 import blenderbim.tool as tool
 import blenderbim.core.geometry as geometry
@@ -36,8 +38,9 @@ from functools import partial
 from blenderbim.bim import import_ifc
 from blenderbim.bim.module.geometry.helper import Helper
 from blenderbim.bim.module.model.data import AuthoringData, RailingData, RoofData, WindowData, DoorData
+from blenderbim.bim.module.model.opening import FilledOpeningGenerator
 from ifcopenshell.util.shape_builder import V, ShapeBuilder
-from typing import Optional, Union, TypeVar, Any
+from typing import Optional, Union, TypeVar, Any, Iterable
 
 T = TypeVar("T")
 
@@ -468,7 +471,7 @@ class Model(blenderbim.core.tool.Model):
                     has_deleted_opening = True
 
     @classmethod
-    def get_material_layer_parameters(cls, element):
+    def get_material_layer_parameters(cls, element: ifcopenshell.entity_instance) -> dict[str, Any]:
         unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
         layer_set_direction = "AXIS2"
         offset = 0.0
@@ -551,7 +554,7 @@ class Model(blenderbim.core.tool.Model):
             data = tool.Ifc.get().createIfcText(json.dumps(data))
             ifcopenshell.api.run("pset.edit_pset", tool.Ifc.get(), pset=pset, properties={"Data": data})
         else:
-            ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), pset=pset)
+            ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
 
     @classmethod
     def get_flow_segment_axis(cls, obj):
@@ -902,7 +905,7 @@ class Model(blenderbim.core.tool.Model):
         return Matrix(placement)
 
     @classmethod
-    def reload_body_representation(cls, obj_or_objects):
+    def reload_body_representation(cls, obj_or_objects: Union[bpy.types.Object, Iterable[bpy.types.Object]]) -> None:
         """Update body representation including all decomposed objects"""
         if isinstance(obj_or_objects, collections.abc.Iterable):
             objects = set(obj_or_objects)
@@ -1203,3 +1206,49 @@ class Model(blenderbim.core.tool.Model):
 
         vertices = (v.to_3d().xzy for v in vertices)
         return (vertices, edges, faces)
+
+    @classmethod
+    def update_simple_openings(cls, element: ifcopenshell.entity_instance) -> None:
+        ifc_file = tool.Ifc.get()
+        fillings = {e: tool.Ifc.get_object(e) for e in tool.Ifc.get_all_element_occurrences(element)}
+
+        voided_objs = set()
+        has_replaced_opening_representation = False
+        for filling in fillings:
+            if not filling.FillsVoids:
+                continue
+
+            opening = filling.FillsVoids[0].RelatingOpeningElement
+            voided_obj = tool.Ifc.get_object(opening.VoidsElements[0].RelatingBuildingElement)
+            voided_objs.add(voided_obj)
+
+            # We assume all occurrences of the same element type (e.g. a window)
+            # will use openings of the same thickness.
+            # Generator we use by default will create a really thick opening representation
+            # to make sure it will fit for walls with different thickness.
+            if has_replaced_opening_representation:
+                continue
+
+            old_representation = ifcopenshell.util.representation.get_representation(
+                opening, "Model", "Body", "MODEL_VIEW"
+            )
+            old_representation = tool.Geometry.resolve_mapped_representation(old_representation)
+            ifcopenshell.api.run(
+                "geometry.unassign_representation", ifc_file, product=opening, representation=old_representation
+            )
+
+            new_representation = FilledOpeningGenerator().generate_opening_from_filling(
+                filling, fillings[filling], voided_obj.dimensions[1]
+            )
+
+            for inverse in ifc_file.get_inverse(old_representation):
+                ifcopenshell.util.element.replace_attribute(inverse, old_representation, new_representation)
+
+            ifcopenshell.api.run("geometry.remove_representation", ifc_file, representation=old_representation)
+
+            has_replaced_opening_representation = True
+
+        tool.Model.reload_body_representation(voided_objs)
+        if fillings:
+            with bpy.context.temp_override(selected_objects=list(fillings.values())):
+                bpy.ops.bim.recalculate_fill()

src/blenderbim/blenderbim/tool/project.py

@@ -19,17 +19,24 @@
 import os
 import bpy
 import ifcopenshell
+import ifcopenshell.util.representation
 import ifcopenshell.util.unit
+import blenderbim.core.aggregate
+import blenderbim.core.context
 import blenderbim.core.tool
+import blenderbim.core.root
+import blenderbim.core.unit
+import blenderbim.core.owner
 import blenderbim.bim.schema
 import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
 from pathlib import Path
+from typing import Optional
 
 
 class Project(blenderbim.core.tool.Project):
     @classmethod
-    def append_all_types_from_template(cls, template):
+    def append_all_types_from_template(cls, template: str) -> None:
         # TODO refactor
         filepath = os.path.join(bpy.context.scene.BIMProperties.data_dir, "templates", "projects", template)
         bpy.ops.bim.select_library_file(filepath=filepath)
@@ -95,13 +102,13 @@ class Project(blenderbim.core.tool.Project):
     @classmethod
     def run_root_assign_class(
         cls,
-        obj=None,
-        ifc_class=None,
-        predefined_type=None,
-        should_add_representation=True,
-        context=None,
-        ifc_representation_class=None,
-    ):
+        obj: bpy.types.Object,
+        ifc_class: str,
+        predefined_type: Optional[str] = None,
+        should_add_representation: bool = True,
+        context: Optional[ifcopenshell.entity_instance] = None,
+        ifc_representation_class: Optional[str] = None,
+    ) -> ifcopenshell.entity_instance:
         return blenderbim.core.root.assign_class(
             tool.Ifc,
             tool.Collector,

src/blenderbim/blenderbim/tool/pset.py

@@ -23,6 +23,7 @@ import blenderbim.core.tool
 import blenderbim.tool as tool
 import blenderbim.bim.schema
 from typing import Union
+from blenderbim.bim.module.pset.calc_quantity_function_mapper import mapper
 
 
 class Pset(blenderbim.core.tool.Pset):
@@ -56,9 +57,12 @@ class Pset(blenderbim.core.tool.Pset):
             return bpy.context.scene.GroupPsetProperties
 
     @classmethod
-    def get_pset_name(cls, obj, obj_type):
-        pset = cls.get_pset_props(obj, obj_type)
-        return pset.pset_name
+    def get_pset_name(cls, obj, obj_type, pset_type="PSET"):
+        props = cls.get_pset_props(obj, obj_type)
+        name = props.pset_name if pset_type == "PSET" else props.qto_name
+        if name == "BBIM_CUSTOM":
+            return ""
+        return name
 
     @classmethod
     def is_pset_applicable(cls, element: ifcopenshell.entity_instance, pset_name: str) -> bool:
@@ -82,5 +86,202 @@ class Pset(blenderbim.core.tool.Pset):
     def enable_pset_editing(cls, pset_id=None, pset_name=None, pset_type=None, obj=None, obj_type=None):
         # TODO REFACTOR ONCE toll/CORE functions are available
         bpy.ops.bim.enable_pset_editing(
-            pset_id=0, pset_name=tool.Pset.get_pset_name(obj, obj_type), pset_type="PSET", obj=obj, obj_type=obj_type
+            pset_id=0, pset_name=cls.get_pset_name(obj, obj_type), pset_type="PSET", obj=obj, obj_type=obj_type
         )
+
+    @classmethod
+    def import_pset_from_existing(cls, pset, props):
+        pset_props = []
+        if pset.is_a("IfcElementQuantity"):
+            pset_props = pset.Quantities
+        elif pset.is_a("IfcPropertySet"):
+            pset_props = pset.HasProperties
+        elif pset.is_a("IfcMaterialProperties") or pset.is_a("IfcProfileProperties"):
+            pset_props = pset.Properties
+
+        for prop in pset_props:
+            if props.properties.get(prop.Name):
+                continue  # This property has already been added from a template
+            if prop.is_a("IfcPropertyEnumeratedValue"):
+                simple_prop = props.properties.add()
+                simple_prop.name = prop.Name
+                simple_prop.value_type = "IfcPropertyEnumeratedValue"
+                metadata = simple_prop.metadata
+                metadata.name = prop.Name
+                metadata.is_null = len(simple_prop.enumerated_value.enumerated_values) == 0
+                metadata.is_optional = True
+                metadata.set_value(prop.EnumerationReference.EnumerationValues[0].wrappedValue)
+
+                enum_items = [v.wrappedValue for v in prop.EnumerationReference.EnumerationValues]
+                selected_enum_items = [v.wrappedValue for v in prop.EnumerationValues]
+                data_type = metadata.get_value_name(display_only=True)
+
+                for enum in enum_items:
+                    new = simple_prop.enumerated_value.enumerated_values.add()
+                    setattr(new, data_type, enum)
+                    new.is_selected = enum in selected_enum_items
+            else:
+                if prop.is_a("IfcPropertySingleValue"):
+                    value = prop.NominalValue.wrappedValue if prop.NominalValue else None
+                elif prop.is_a("IfcPhysicalSimpleQuantity"):
+                    value = prop[3]
+                new_prop = props.properties.add()
+                new_prop.name = prop.Name
+                metadata = new_prop.metadata
+                metadata.set_value(value)
+                metadata.name = prop.Name
+                metadata.is_null = value is None
+                metadata.is_optional = True
+                metadata.set_value(metadata.get_value_default() if metadata.is_null else value)
+
+    @classmethod
+    def get_prop_template_primitive_type(cls, prop_template):
+        if prop_template.TemplateType in ["Q_LENGTH", "Q_AREA", "Q_VOLUME", "Q_WEIGHT", "Q_TIME"]:
+            return "float"
+        elif prop_template.TemplateType == "Q_COUNT":
+            return "integer"
+        return ifcopenshell.util.attribute.get_primitive_type(
+            tool.Ifc.schema().declaration_by_name(prop_template.PrimaryMeasureType or "IfcLabel")
+        )
+
+    @classmethod
+    def import_enumerated_value_from_template(cls, prop_template, data, props):
+        enum_items = [v.wrappedValue for v in prop_template.Enumerators.EnumerationValues]
+        selected_enum_items = data.get(prop_template.Name, []) or []
+
+        prop = props.properties.add()
+        prop.name = prop_template.Name
+        prop.value_type = "IfcPropertyEnumeratedValue"
+        metadata = prop.metadata
+        metadata.name = prop_template.Name
+        metadata.is_null = data.get(prop_template.Name, None) is None
+        metadata.is_optional = True
+        metadata.is_uri = prop_template.PrimaryMeasureType == "IfcURIReference"
+
+        # Cute hack to abuse the metadata to find the Blender data_type
+        metadata.set_value(enum_items[0])
+        data_type = metadata.get_value_name()
+
+        for enum in enum_items:
+            new = prop.enumerated_value.enumerated_values.add()
+            setattr(new, data_type, enum)
+            new.is_selected = enum in selected_enum_items
+
+    @classmethod
+    def import_single_value_from_template(cls, pset_template, prop_template, data, props):
+        prop = props.properties.add()
+        prop.name = prop_template.Name
+        prop.value_type = "IfcPropertySingleValue"
+        metadata = prop.metadata
+        metadata.name = prop_template.Name
+        metadata.is_null = data.get(prop_template.Name, None) is None
+        metadata.is_optional = True
+        metadata.is_uri = prop_template.PrimaryMeasureType == "IfcURIReference"
+        metadata.has_calculator = bool(mapper.get(pset_template.Name, {}).get(prop_template.Name, None))
+        metadata.data_type = cls.get_prop_template_primitive_type(prop_template)
+
+        special_type = ""
+        if (
+            prop_template.PrimaryMeasureType
+            in (
+                "IfcPositiveLengthMeasure",
+                "IfcLengthMeasure",
+            )
+            or prop_template.TemplateType == "Q_LENGTH"
+        ):
+            special_type = "LENGTH"
+        elif prop_template.PrimaryMeasureType == "IfcAreaMeasure" or prop_template.TemplateType == "Q_AREA":
+            special_type = "AREA"
+        elif prop_template.PrimaryMeasureType == "IfcVolumeMeasure" or prop_template.TemplateType == "Q_VOLUME":
+            special_type = "VOLUME"
+        metadata.special_type = special_type
+
+        if metadata.data_type == "string":
+            metadata.string_value = "" if metadata.is_null else str(data[prop_template.Name])
+        elif metadata.data_type == "integer":
+            metadata.int_value = 0 if metadata.is_null else int(data[prop_template.Name])
+        elif metadata.data_type == "float":
+            metadata.float_value = 0.0 if metadata.is_null else float(data[prop_template.Name])
+        elif metadata.data_type == "boolean":
+            metadata.bool_value = False if metadata.is_null else bool(data[prop_template.Name])
+
+        metadata.ifc_class = pset_template.Name
+        blenderbim.bim.helper.add_attribute_description(metadata, prop_template)
+
+    @classmethod
+    def import_pset_from_template(cls, pset_template, pset, props):
+        if pset:
+            data = ifcopenshell.util.element.get_property_definition(pset)
+            del data["id"]
+        else:
+            data = {}
+        for prop_template in pset_template.HasPropertyTemplates:
+            if not prop_template.is_a("IfcSimplePropertyTemplate"):
+                continue  # Other types not yet supported
+            if prop_template.TemplateType == "P_SINGLEVALUE":
+                cls.import_single_value_from_template(pset_template, prop_template, data, props)
+            elif prop_template.TemplateType.startswith("Q_"):
+                cls.import_single_value_from_template(pset_template, prop_template, data, props)
+            elif prop_template.TemplateType == "P_ENUMERATEDVALUE":
+                cls.import_enumerated_value_from_template(prop_template, data, props)
+            else:
+                # NOTE: currently unsupported types:
+                # - P_BOUNDEDVALUE
+                # - P_LISTVALUE
+                # - P_REFERENCEVALUE
+                # - P_TABLEVALUE
+                pass
+
+    @classmethod
+    def clear_blender_pset_properties(cls, props):
+        props.properties.clear()
+
+    @classmethod
+    def set_active_pset(cls, props, pset, has_template):
+        props.active_pset_id = pset.id()
+        props.active_pset_name = pset.Name
+        props.active_pset_has_template = has_template
+
+    @classmethod
+    def enable_proposed_pset(cls, props, pset_name, pset_type, has_template):
+        props.active_pset_id = 0
+        props.active_pset_name = pset_name or "My_Data"
+        props.active_pset_type = pset_type
+        props.active_pset_has_template = has_template
+
+    @classmethod
+    def get_pset_template(cls, name):
+        return blenderbim.bim.schema.ifc.psetqto.get_by_name(name)
+
+    @classmethod
+    def add_proposed_property(cls, name, value, props):
+        if props.properties.get(name):
+            return
+        prop = props.properties.add()
+        prop.name = name
+        metadata = prop.metadata
+        metadata.set_value(value)
+        metadata.name = name
+        metadata.is_null = value is None
+        metadata.is_optional = True
+        metadata.set_value(metadata.get_value_default() if metadata.is_null else value)
+
+    @classmethod
+    def cast_string_to_primitive(cls, value: str):
+        value = value.strip()
+        if value.lower() == "true":
+            return True
+        elif value.lower() == "false":
+            return False
+        elif value.lower() == "null" or value == "":
+            return None
+        try:
+            value = int(value)
+            return value
+        except:
+            try:
+                value = float(value)
+                return value
+            except:
+                return value
+        return value

src/blenderbim/blenderbim/tool/resource.py

@@ -33,10 +33,12 @@ import ifcopenshell.util.cost
 import ifcopenshell.util.resource
 import blenderbim.bim.schema
 import ifcopenshell.util.constraint
+from typing import Any, Union
+
 
 class Resource(blenderbim.core.tool.Resource):
     @classmethod
-    def load_resources(cls):
+    def load_resources(cls) -> None:
         def create_new_resource_li(resource, level_index):
             new = bpy.context.scene.BIMResourceTreeProperties.resources.add()
             new.ifc_definition_id = resource.id()
@@ -66,42 +68,44 @@ class Resource(blenderbim.core.tool.Resource):
         props.is_editing = True
 
     @classmethod
-    def load_resource_properties(cls):
+    def load_resource_properties(cls) -> None:
         props = bpy.context.scene.BIMResourceProperties
         tprops = bpy.context.scene.BIMResourceTreeProperties
         props.is_resource_update_enabled = False
         for item in tprops.resources:
             resource = tool.Ifc.get().by_id(item.ifc_definition_id)
             item.name = resource.Name if resource.Name else "Unnamed"
-            item.schedule_usage = resource.Usage.ScheduleUsage if (resource.Usage and resource.Usage.ScheduleUsage) else 0
+            item.schedule_usage = (
+                resource.Usage.ScheduleUsage if (resource.Usage and resource.Usage.ScheduleUsage) else 0
+            )
         props.is_resource_update_enabled = True
 
     @classmethod
-    def disable_editing_resource(cls):
+    def disable_editing_resource(cls) -> None:
         bpy.context.scene.BIMResourceProperties.active_resource_id = 0
         bpy.context.scene.BIMResourceProperties.active_resource_time_id = 0
 
     @classmethod
-    def disable_resource_editing_ui(cls):
+    def disable_resource_editing_ui(cls) -> None:
         bpy.context.scene.BIMResourceProperties.is_editing = False
 
     @classmethod
-    def load_resource_attributes(cls, resource):
+    def load_resource_attributes(cls, resource: ifcopenshell.entity_instance) -> None:
         blenderbim.bim.helper.import_attributes2(resource, bpy.context.scene.BIMResourceProperties.resource_attributes)
 
     @classmethod
-    def enable_editing_resource(cls, resource):
+    def enable_editing_resource(cls, resource: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMResourceProperties
         props.active_resource_id = resource.id()
         props.resource_attributes.clear()
         props.editing_resource_type = "ATTRIBUTES"
 
     @classmethod
-    def get_resource_attributes(cls):
+    def get_resource_attributes(cls) -> dict[str, Any]:
         return blenderbim.bim.helper.export_attributes(bpy.context.scene.BIMResourceProperties.resource_attributes)
 
     @classmethod
-    def enable_editing_resource_time(cls, resource):
+    def enable_editing_resource_time(cls, resource: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMResourceProperties
         props.resource_time_attributes.clear()
         props.active_resource_time_id = resource.Usage.id()
@@ -109,11 +113,11 @@ class Resource(blenderbim.core.tool.Resource):
         props.editing_resource_type = "USAGE"
 
     @classmethod
-    def get_resource_time(cls, resource):
-        return resource.Usage if resource.Usage else None
+    def get_resource_time(cls, resource: ifcopenshell.entity_instance) -> Union[ifcopenshell.entity_instance, None]:
+        return resource.Usage or None
 
     @classmethod
-    def load_resource_time_attributes(cls, resource_time):
+    def load_resource_time_attributes(cls, resource_time: ifcopenshell.entity_instance) -> None:
         def callback(name, prop, data):
             if prop.data_type == "string":
                 if isinstance(data[name], datetime):
@@ -128,7 +132,7 @@ class Resource(blenderbim.core.tool.Resource):
         )
 
     @classmethod
-    def get_resource_time_attributes(cls):
+    def get_resource_time_attributes(cls) -> dict[str, Any]:
         def callback(attributes, prop):
             if "Start" in prop.name or "Finish" in prop.name or prop.name == "StatusTime":
                 if prop.is_null:
@@ -147,20 +151,19 @@ class Resource(blenderbim.core.tool.Resource):
         return blenderbim.bim.helper.export_attributes(props.resource_time_attributes, callback)
 
     @classmethod
-    def enable_editing_resource_costs(cls, resource):
+    def enable_editing_resource_costs(cls, resource: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMResourceProperties
         props.active_resource_id = resource.id()
         props.editing_resource_type = "COSTS"
-        resource
 
     @classmethod
-    def disable_editing_resource_cost_value(cls):
+    def disable_editing_resource_cost_value(cls) -> None:
         props = bpy.context.scene.BIMResourceProperties
         props.active_cost_value_id = 0
         props.cost_value_editing_type = ""
 
     @classmethod
-    def enable_editing_resource_cost_value_formula(cls, cost_value):
+    def enable_editing_resource_cost_value_formula(cls, cost_value: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMResourceProperties
         props.cost_value_attributes.clear()
         props.active_cost_value_id = cost_value.id()
@@ -168,7 +171,7 @@ class Resource(blenderbim.core.tool.Resource):
         props.cost_value_formula = ifcopenshell.util.cost.serialise_cost_value(cost_value) if cost_value else ""
 
     @classmethod
-    def load_cost_value_attributes(cls, cost_value):
+    def load_cost_value_attributes(cls, cost_value: ifcopenshell.entity_instance):
         def callback(name, prop, data):
             if name == "AppliedValue":
                 # TODO: for now, only support simple IfcValues (which are effectively IfcMonetaryMeasure)
@@ -221,7 +224,7 @@ class Resource(blenderbim.core.tool.Resource):
         blenderbim.bim.helper.import_attributes2(cost_value, props.cost_value_attributes, callback)
 
     @classmethod
-    def enable_editing_cost_value_attributes(cls, cost_value):
+    def enable_editing_cost_value_attributes(cls, cost_value: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMResourceProperties
         props.cost_value_attributes.clear()
         props.active_cost_value_id = cost_value.id()
@@ -232,7 +235,7 @@ class Resource(blenderbim.core.tool.Resource):
         return bpy.context.scene.BIMResourceProperties.cost_value_formula
 
     @classmethod
-    def get_resource_cost_value_attributes(cls):
+    def get_resource_cost_value_attributes(cls) -> dict[str, Any]:
         def callback(attributes, prop):
             if prop.name == "UnitBasisValue":
                 if prop.is_null:
@@ -257,28 +260,28 @@ class Resource(blenderbim.core.tool.Resource):
         )
 
     @classmethod
-    def enable_editing_resource_base_quantity(cls, resource):
+    def enable_editing_resource_base_quantity(cls, resource: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMResourceProperties
         props.active_resource_id = resource.id()
         props.editing_resource_type = "QUANTITY"
 
     @classmethod
-    def enable_editing_resource_quantity(cls, resource_quantity):
+    def enable_editing_resource_quantity(cls, resource_quantity: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMResourceProperties
         props.quantity_attributes.clear()
         props.is_editing_quantity = True
         blenderbim.bim.helper.import_attributes2(resource_quantity, props.quantity_attributes)
 
     @classmethod
-    def disable_editing_resource_quantity(cls):
+    def disable_editing_resource_quantity(cls) -> None:
         bpy.context.scene.BIMResourceProperties.is_editing_quantity = False
 
     @classmethod
-    def get_resource_quantity_attributes(cls):
+    def get_resource_quantity_attributes(cls) -> dict[str, Any]:
         return blenderbim.bim.helper.export_attributes(bpy.context.scene.BIMResourceProperties.quantity_attributes)
 
     @classmethod
-    def expand_resource(cls, resource):
+    def expand_resource(cls, resource: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMResourceProperties
         contracted_resources = json.loads(props.contracted_resources)
         if not resource.id() in contracted_resources:
@@ -287,14 +290,14 @@ class Resource(blenderbim.core.tool.Resource):
         props.contracted_resources = json.dumps(contracted_resources)
 
     @classmethod
-    def contract_resource(cls, resource):
+    def contract_resource(cls, resource: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMResourceProperties
         contracted_resources = json.loads(props.contracted_resources)
         contracted_resources.append(resource.id())
         props.contracted_resources = json.dumps(contracted_resources)
 
     @classmethod
-    def import_resources(cls, file_path):
+    def import_resources(cls, file_path: str) -> None:
         from ifc4d.csv2ifc import Csv2Ifc
 
         start = time.time()
@@ -305,7 +308,7 @@ class Resource(blenderbim.core.tool.Resource):
         print("Importing Resources CSV finished in {:.2f} seconds".format(time.time() - start))
 
     @classmethod
-    def get_highlighted_resource(cls):
+    def get_highlighted_resource(cls) -> Union[ifcopenshell.entity_instance, None]:
         resources = len(bpy.context.scene.BIMResourceTreeProperties.resources)
         if resources and resources > bpy.context.scene.BIMResourceProperties.active_resource_index:
             return tool.Ifc.get().by_id(
@@ -315,7 +318,7 @@ class Resource(blenderbim.core.tool.Resource):
             )
 
     @classmethod
-    def clear_productivity_data(cls, props):
+    def clear_productivity_data(cls, props: bpy.types.PropertyGroup) -> None:
         for duration_prop in props.quantity_consumed or []:
             if duration_prop.name == "BaseQuantityConsumed":
                 duration_prop.years = 0
@@ -328,7 +331,7 @@ class Resource(blenderbim.core.tool.Resource):
         props.quantity_produced_name = ""
 
     @classmethod
-    def load_productivity_data(cls):
+    def load_productivity_data(cls) -> None:
         duration_props = None
         for collection_prop in bpy.context.scene.BIMResourceProductivity.quantity_consumed:
             duration_props = collection_prop if collection_prop.name == "BaseQuantityConsumed" else None
@@ -358,7 +361,7 @@ class Resource(blenderbim.core.tool.Resource):
                     duration_props.seconds = durations_attributes["seconds"]
 
     @classmethod
-    def get_productivity_attributes(cls):
+    def get_productivity_attributes(cls) -> dict[str, Any]:
         props = bpy.context.scene.BIMResourceProductivity
         productivity = {}
         if props.quantity_consumed:
@@ -370,7 +373,9 @@ class Resource(blenderbim.core.tool.Resource):
         return productivity
 
     @classmethod
-    def get_productivity(cls, resource, should_inherit=False):
+    def get_productivity(
+        cls, resource: ifcopenshell.entity_instance, should_inherit: bool = False
+    ) -> ifcopenshell.util.resource.PRODUCTIVITY_PSET_DATA:
         return ifcopenshell.util.resource.get_productivity(resource, should_inherit=should_inherit)
 
     @classmethod
@@ -380,29 +385,29 @@ class Resource(blenderbim.core.tool.Resource):
             return
         return tool.Ifc.run(
             "pset.edit_pset",
-            pset= tool.Ifc.get().by_id(productivity["id"]),
+            pset=tool.Ifc.get().by_id(productivity["id"]),
             properties=attributes,
         )
 
     @classmethod
-    def get_constraints(cls, resource):
+    def get_constraints(cls, resource: ifcopenshell.entity_instance) -> list[ifcopenshell.entity_instance]:
         return ifcopenshell.util.constraint.get_constraints(product=resource)
 
     @classmethod
-    def get_metrics(cls, constraint):
+    def get_metrics(cls, constraint: ifcopenshell.entity_instance) -> list[ifcopenshell.entity_instance]:
         return ifcopenshell.util.constraint.get_metrics(constraint)
 
     @classmethod
-    def get_metric_reference(cls, metric, is_deep=True):
+    def get_metric_reference(cls, metric: ifcopenshell.entity_instance, is_deep: bool = True):
         return ifcopenshell.util.constraint.get_metric_reference(metric, is_deep=is_deep)
 
     @classmethod
-    def has_metric_constraint(cls, resource, attribute):
+    def has_metric_constraint(cls, resource: ifcopenshell.entity_instance, attribute):
         metrics = ifcopenshell.util.constraint.get_metric_constraints(resource, attribute)
         return True if metrics else False
 
     @classmethod
-    def run_edit_resource_time(cls, resource, attributes):
+    def run_edit_resource_time(cls, resource: ifcopenshell.entity_instance, attributes: dict[str, Any]) -> None:
         if not resource.Usage:
             tool.Ifc.run(
                 "resource.add_resource_time",
@@ -411,7 +416,7 @@ class Resource(blenderbim.core.tool.Resource):
         tool.Ifc.run("resource.edit_resource_time", resource_time=resource.Usage, attributes=attributes)
 
     @classmethod
-    def go_to_resource(cls, resource):
+    def go_to_resource(cls, resource: ifcopenshell.entity_instance) -> None:
         def get_ancestors_ids(resource):
             ids = []
             for rel in resource.Nests or []:
@@ -427,24 +432,22 @@ class Resource(blenderbim.core.tool.Resource):
         bpy.context.scene.BIMResourceProperties.contracted_resources = json.dumps(contracted_resources)
         cls.load_resources()
 
-
         resource_props = bpy.context.scene.BIMResourceTreeProperties
         expanded_resources = [item.ifc_definition_id for item in resource_props.resources]
         bpy.context.scene.BIMResourceProperties.active_resource_index = expanded_resources.index(resource.id())
 
-
     @classmethod
-    def run_calculate_resource_usage(cls, resource):
+    def run_calculate_resource_usage(cls, resource: ifcopenshell.entity_instance) -> None:
         tool.Ifc.run("resource.calculate_resource_usage", resource=resource)
 
     @classmethod
-    def get_task_assignments(cls, resource):
+    def get_task_assignments(cls, resource: ifcopenshell.entity_instance) -> Union[ifcopenshell.entity_instance, None]:
         return ifcopenshell.util.resource.get_task_assignments(resource)
 
     @classmethod
-    def get_nested_resources(cls, resource):
+    def get_nested_resources(cls, resource: ifcopenshell.entity_instance) -> list[ifcopenshell.entity_instance]:
         return ifcopenshell.util.resource.get_nested_resources(resource)
 
     @classmethod
-    def is_attribute_locked(cls, resource, attribute):
-        return ifcopenshell.util.constraint.is_attribute_locked(resource, attribute)
+    def is_attribute_locked(cls, resource: ifcopenshell.entity_instance, attribute) -> bool:
+        return ifcopenshell.util.constraint.is_attribute_locked(resource, attribute)

src/blenderbim/blenderbim/tool/root.py

@@ -29,6 +29,7 @@ import blenderbim.core.style
 import blenderbim.tool as tool
 from mathutils import Vector
 from blenderbim.bim.module.model.opening import FilledOpeningGenerator
+from typing import Union, Optional
 
 
 class Root(blenderbim.core.tool.Root):
@@ -129,7 +130,7 @@ class Root(blenderbim.core.tool.Root):
         return ifcopenshell.util.representation.get_representation(element, context=context.ContextType)
 
     @classmethod
-    def get_element_type(cls, element):
+    def get_element_type(cls, element: ifcopenshell.entity_instance) -> Union[ifcopenshell.entity_instance, None]:
         return ifcopenshell.util.element.get_type(element)
 
     @classmethod
@@ -282,8 +283,12 @@ class Root(blenderbim.core.tool.Root):
 
     @classmethod
     def run_geometry_add_representation(
-        cls, obj=None, context=None, ifc_representation_class=None, profile_set_usage=None
-    ):
+        cls,
+        obj: bpy.types.Object,
+        context: ifcopenshell.entity_instance,
+        ifc_representation_class: Optional[str] = None,
+        profile_set_usage: Optional[ifcopenshell.entity_instance] = None,
+    ) -> ifcopenshell.entity_instance:
         return blenderbim.core.geometry.add_representation(
             tool.Ifc,
             tool.Geometry,

src/blenderbim/blenderbim/tool/sequence.py

@@ -36,11 +36,12 @@ import blenderbim.bim.helper
 import blenderbim.bim.module.sequence.helper as helper
 from dateutil import parser
 from datetime import datetime
+from typing import Optional, Any, Union
 
 
 class Sequence(blenderbim.core.tool.Sequence):
     @classmethod
-    def get_work_plan_attributes(cls):
+    def get_work_plan_attributes(cls) -> dict[str, Any]:
         def callback(attributes, prop):
             if "Date" in prop.name or "Time" in prop.name:
                 if prop.is_null:
@@ -59,7 +60,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         return blenderbim.bim.helper.export_attributes(props.work_plan_attributes, callback)
 
     @classmethod
-    def load_work_plan_attributes(cls, work_plan):
+    def load_work_plan_attributes(cls, work_plan: ifcopenshell.entity_instance) -> None:
         def callback(name, prop, data):
             if name in ["CreationDate", "StartTime", "FinishTime"]:
                 prop.string_value = "" if prop.is_null else data[name]
@@ -70,23 +71,23 @@ class Sequence(blenderbim.core.tool.Sequence):
         blenderbim.bim.helper.import_attributes2(work_plan, props.work_plan_attributes, callback)
 
     @classmethod
-    def enable_editing_work_plan(cls, work_plan):
+    def enable_editing_work_plan(cls, work_plan: Union[ifcopenshell.entity_instance, None]) -> None:
         if work_plan:
             bpy.context.scene.BIMWorkPlanProperties.active_work_plan_id = work_plan.id()
             bpy.context.scene.BIMWorkPlanProperties.editing_type = "ATTRIBUTES"
 
     @classmethod
-    def disable_editing_work_plan(cls):
+    def disable_editing_work_plan(cls) -> None:
         bpy.context.scene.BIMWorkPlanProperties.active_work_plan_id = 0
 
     @classmethod
-    def enable_editing_work_plan_schedules(cls, work_plan):
+    def enable_editing_work_plan_schedules(cls, work_plan: Union[ifcopenshell.entity_instance, None]) -> None:
         if work_plan:
             bpy.context.scene.BIMWorkPlanProperties.active_work_plan_id = work_plan.id()
             bpy.context.scene.BIMWorkPlanProperties.editing_type = "SCHEDULES"
 
     @classmethod
-    def get_work_schedule_attributes(cls):
+    def get_work_schedule_attributes(cls) -> dict[str, Any]:
         def callback(attributes, prop):
             if "Date" in prop.name or "Time" in prop.name:
                 if prop.is_null:
@@ -105,7 +106,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         return blenderbim.bim.helper.export_attributes(props.work_schedule_attributes, callback)
 
     @classmethod
-    def load_work_schedule_attributes(cls, work_schedule):
+    def load_work_schedule_attributes(cls, work_schedule: ifcopenshell.entity_instance) -> None:
         def callback(name, prop, data):
             if name in ["CreationDate", "StartTime", "FinishTime"]:
                 prop.string_value = "" if prop.is_null else data[name]
@@ -116,23 +117,23 @@ class Sequence(blenderbim.core.tool.Sequence):
         blenderbim.bim.helper.import_attributes2(work_schedule, props.work_schedule_attributes, callback)
 
     @classmethod
-    def enable_editing_work_schedule(cls, work_schedule):
+    def enable_editing_work_schedule(cls, work_schedule: ifcopenshell.entity_instance) -> None:
         bpy.context.scene.BIMWorkScheduleProperties.active_work_schedule_id = work_schedule.id()
         bpy.context.scene.BIMWorkScheduleProperties.editing_type = "WORK_SCHEDULE"
 
     @classmethod
-    def disable_editing_work_schedule(cls):
+    def disable_editing_work_schedule(cls) -> None:
         bpy.context.scene.BIMWorkScheduleProperties.active_work_schedule_id = 0
 
     @classmethod
-    def enable_editing_work_schedule_tasks(cls, work_schedule):
+    def enable_editing_work_schedule_tasks(cls, work_schedule: Union[ifcopenshell.entity_instance, None]) -> None:
         if work_schedule:
             props = bpy.context.scene.BIMWorkScheduleProperties
             props.active_work_schedule_id = work_schedule.id()
             props.editing_type = "TASKS"
 
     @classmethod
-    def load_task_tree(cls, work_schedule):
+    def load_task_tree(cls, work_schedule: ifcopenshell.entity_instance) -> None:
         bpy.context.scene.BIMTaskTreeProperties.tasks.clear()
         props = bpy.context.scene.BIMWorkScheduleProperties
         cls.contracted_tasks = json.loads(props.contracted_tasks)
@@ -142,7 +143,7 @@ class Sequence(blenderbim.core.tool.Sequence):
             cls.create_new_task_li(related_object_id, 0)
 
     @classmethod
-    def get_sorted_tasks_ids(cls, tasks):
+    def get_sorted_tasks_ids(cls, tasks: list[ifcopenshell.entity_instance]) -> list[int]:
         def get_sort_key(task):
             # Sorting only applies to actual tasks, not the WBS
             # for rel in task.IsNestedBy:
@@ -170,7 +171,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         return related_object_ids
 
     @classmethod
-    def create_new_task_li(cls, related_object_id, level_index):
+    def create_new_task_li(cls, related_object_id: int, level_index: int) -> None:
         task = tool.Ifc.get().by_id(related_object_id)
         new = bpy.context.scene.BIMTaskTreeProperties.tasks.add()
         new.ifc_definition_id = related_object_id
@@ -182,8 +183,9 @@ class Sequence(blenderbim.core.tool.Sequence):
                 for related_object_id in cls.get_sorted_tasks_ids(ifcopenshell.util.sequence.get_nested_tasks(task)):
                     cls.create_new_task_li(related_object_id, level_index + 1)
 
+    # TODO: task argument is never used?
     @classmethod
-    def load_task_properties(cls, task=None):
+    def load_task_properties(cls, task: Optional[ifcopenshell.entity_instance] = None) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         task_props = bpy.context.scene.BIMTaskTreeProperties
         tasks_with_visual_bar = cls.get_task_bar_list()
@@ -248,24 +250,24 @@ class Sequence(blenderbim.core.tool.Sequence):
         props.is_task_update_enabled = True
 
     @classmethod
-    def get_active_work_schedule(cls):
+    def get_active_work_schedule(cls) -> Union[ifcopenshell.entity_instance, None]:
         if not bpy.context.scene.BIMWorkScheduleProperties.active_work_schedule_id:
             return None
         return tool.Ifc.get().by_id(bpy.context.scene.BIMWorkScheduleProperties.active_work_schedule_id)
 
     @classmethod
-    def expand_task(cls, task):
+    def expand_task(cls, task: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         contracted_tasks = json.loads(props.contracted_tasks)
         contracted_tasks.remove(task.id())
         props.contracted_tasks = json.dumps(contracted_tasks)
 
     @classmethod
-    def expand_all_tasks(cls):
+    def expand_all_tasks(cls) -> None:
         bpy.context.scene.BIMWorkScheduleProperties.contracted_tasks = json.dumps([])
 
     @classmethod
-    def contract_all_tasks(cls):
+    def contract_all_tasks(cls) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         contracted_tasks = json.loads(props.contracted_tasks)
         for task_item in bpy.context.scene.BIMTaskTreeProperties.tasks:
@@ -274,18 +276,18 @@ class Sequence(blenderbim.core.tool.Sequence):
         props.contracted_tasks = json.dumps(contracted_tasks)
 
     @classmethod
-    def contract_task(cls, task):
+    def contract_task(cls, task: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         contracted_tasks = json.loads(props.contracted_tasks)
         contracted_tasks.append(task.id())
         props.contracted_tasks = json.dumps(contracted_tasks)
 
     @classmethod
-    def disable_work_schedule(cls):
+    def disable_work_schedule(cls) -> None:
         bpy.context.scene.BIMWorkScheduleProperties.active_work_schedule_id = 0
 
     @classmethod
-    def disable_selecting_deleted_task(cls):
+    def disable_selecting_deleted_task(cls) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         if props.active_task_id not in [
             task.ifc_definition_id for task in bpy.context.scene.BIMTaskTreeProperties.tasks
@@ -294,7 +296,7 @@ class Sequence(blenderbim.core.tool.Sequence):
             bpy.context.scene.BIMWorkScheduleProperties.active_task_time_id = 0
 
     @classmethod
-    def get_checked_tasks(cls):
+    def get_checked_tasks(cls) -> list[ifcopenshell.entity_instance]:
         return [
             tool.Ifc.get().by_id(task.ifc_definition_id)
             for task in bpy.context.scene.BIMTaskTreeProperties.tasks
@@ -302,39 +304,39 @@ class Sequence(blenderbim.core.tool.Sequence):
         ] or []
 
     @classmethod
-    def get_task_attribute_value(cls, attribute_name):
+    def get_task_attribute_value(cls, attribute_name: str) -> Any:
         return bpy.context.scene.BIMWorkScheduleProperties.task_attributes.get(attribute_name).get_value()
 
     @classmethod
-    def get_active_task(cls):
+    def get_active_task(cls) -> ifcopenshell.entity_instance:
         return tool.Ifc.get().by_id(bpy.context.scene.BIMWorkScheduleProperties.active_task_id)
 
     @classmethod
-    def get_active_work_time(cls):
+    def get_active_work_time(cls) -> ifcopenshell.entity_instance:
         return tool.Ifc.get().by_id(bpy.context.scene.BIMWorkCalendarProperties.active_work_time_id)
 
     @classmethod
-    def get_task_time(cls, task):
-        return task.TaskTime if task.TaskTime else None
+    def get_task_time(cls, task: ifcopenshell.entity_instance) -> Union[ifcopenshell.entity_instance, None]:
+        return task.TaskTime or None
 
     @classmethod
-    def load_task_attributes(cls, task):
+    def load_task_attributes(cls, task: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.task_attributes.clear()
         blenderbim.bim.helper.import_attributes2(task, props.task_attributes)
 
     @classmethod
-    def enable_editing_task_attributes(cls, task):
+    def enable_editing_task_attributes(cls, task: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.active_task_id = task.id()
         props.editing_task_type = "ATTRIBUTES"
 
     @classmethod
-    def get_task_attributes(cls):
+    def get_task_attributes(cls) -> dict[str, Any]:
         return blenderbim.bim.helper.export_attributes(bpy.context.scene.BIMWorkScheduleProperties.task_attributes)
 
     @classmethod
-    def load_task_time_attributes(cls, task_time):
+    def load_task_time_attributes(cls, task_time: ifcopenshell.entity_instance) -> None:
         def callback(name, prop, data):
             if prop and prop.data_type == "string":
                 duration_props = bpy.context.scene.BIMWorkScheduleProperties.durations_attributes.add()
@@ -358,20 +360,20 @@ class Sequence(blenderbim.core.tool.Sequence):
         blenderbim.bim.helper.import_attributes2(task_time, props.task_time_attributes, callback)
 
     @classmethod
-    def enable_editing_task_time(cls, task):
+    def enable_editing_task_time(cls, task: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.active_task_id = task.id()
         props.active_task_time_id = task.TaskTime.id()
         props.editing_task_type = "TASKTIME"
 
     @classmethod
-    def disable_editing_task(cls):
+    def disable_editing_task(cls) -> None:
         bpy.context.scene.BIMWorkScheduleProperties.active_task_id = 0
         bpy.context.scene.BIMWorkScheduleProperties.active_task_time_id = 0
         bpy.context.scene.BIMWorkScheduleProperties.editing_task_type = ""
 
     @classmethod
-    def get_task_time_attributes(cls):
+    def get_task_time_attributes(cls) -> dict[str, Any]:
         def callback(attributes, prop):
             if "Start" in prop.name or "Finish" in prop.name or prop.name == "StatusTime":
                 if prop.is_null:
@@ -400,7 +402,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         return blenderbim.bim.helper.export_attributes(props.task_time_attributes, callback)
 
     @classmethod
-    def load_task_resources(cls, task):
+    def load_task_resources(cls, task: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         rprops = bpy.context.scene.BIMResourceProperties
         props.task_resources.clear()
@@ -413,36 +415,38 @@ class Sequence(blenderbim.core.tool.Sequence):
         rprops.is_resource_update_enabled = True
 
     @classmethod
-    def get_task_inputs(cls, task):
+    def get_task_inputs(cls, task: ifcopenshell.entity_instance) -> list[ifcopenshell.entity_instance]:
         is_deep = bpy.context.scene.BIMWorkScheduleProperties.show_nested_inputs
         return ifcopenshell.util.sequence.get_task_inputs(task, is_deep)
 
     @classmethod
-    def get_task_outputs(cls, task):
+    def get_task_outputs(cls, task: ifcopenshell.entity_instance) -> list[ifcopenshell.entity_instance]:
         is_deep = bpy.context.scene.BIMWorkScheduleProperties.show_nested_outputs
         return ifcopenshell.util.sequence.get_task_outputs(task, is_deep)
 
     @classmethod
-    def are_entities_same_class(cls, entities):
+    def are_entities_same_class(cls, entities: list[ifcopenshell.entity_instance]) -> bool:
         if not entities:
             return False
         if len(entities) == 1:
             return True
-        first = entities[0]
+        first_class = entities[0].is_a()
         for entity in entities:
-            if entity.is_a() != first.is_a():
+            if entity.is_a() != first_class:
                 return False
         return True
 
     @classmethod
-    def get_task_resources(cls, task):
+    def get_task_resources(
+        cls, task: Union[ifcopenshell.entity_instance, None]
+    ) -> Union[list[ifcopenshell.entity_instance], None]:
         if not task:
             return
         is_deep = bpy.context.scene.BIMWorkScheduleProperties.show_nested_resources
         return ifcopenshell.util.sequence.get_task_resources(task, is_deep)
 
     @classmethod
-    def load_task_inputs(cls, inputs):
+    def load_task_inputs(cls, inputs: list[ifcopenshell.entity_instance]) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.task_inputs.clear()
         for input in inputs:
@@ -451,7 +455,7 @@ class Sequence(blenderbim.core.tool.Sequence):
             new.name = input.Name or "Unnamed"
 
     @classmethod
-    def load_task_outputs(cls, outputs):
+    def load_task_outputs(cls, outputs: list[ifcopenshell.entity_instance]) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.task_outputs.clear()
         if outputs:
@@ -461,7 +465,7 @@ class Sequence(blenderbim.core.tool.Sequence):
                 new.name = output.Name or "Unnamed"
 
     @classmethod
-    def get_highlighted_task(cls):
+    def get_highlighted_task(cls) -> Union[ifcopenshell.entity_instance, None]:
         tasks = bpy.context.scene.BIMTaskTreeProperties.tasks
         if len(tasks) and len(tasks) > bpy.context.scene.BIMWorkScheduleProperties.active_task_index:
             return tool.Ifc.get().by_id(
@@ -469,47 +473,42 @@ class Sequence(blenderbim.core.tool.Sequence):
             )
 
     @classmethod
-    def get_direct_nested_tasks(cls, task):
+    def get_direct_nested_tasks(cls, task: ifcopenshell.entity_instance) -> list[ifcopenshell.entity_instance]:
         return ifcopenshell.util.sequence.get_nested_tasks(task)
 
     @classmethod
-    def get_direct_task_outputs(cls, task):
+    def get_direct_task_outputs(cls, task: ifcopenshell.entity_instance) -> list[ifcopenshell.entity_instance]:
         return ifcopenshell.util.sequence.get_direct_task_outputs(task)
 
     @classmethod
-    def get_task_outputs(cls, task):
-        is_deep = bpy.context.scene.BIMWorkScheduleProperties.show_nested_outputs
-        return ifcopenshell.util.sequence.get_task_outputs(task, is_deep)
-
-    @classmethod
-    def enable_editing_work_calendar_times(cls, work_calendar):
+    def enable_editing_work_calendar_times(cls, work_calendar: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkCalendarProperties
         props.active_work_calendar_id = work_calendar.id()
         props.editing_type = "WORKTIMES"
 
     @classmethod
-    def load_work_calendar_attributes(cls, work_calendar):
+    def load_work_calendar_attributes(cls, work_calendar: ifcopenshell.entity_instance) -> dict[str, Any]:
         props = bpy.context.scene.BIMWorkCalendarProperties
         props.work_calendar_attributes.clear()
         return blenderbim.bim.helper.import_attributes2(work_calendar, props.work_calendar_attributes)
 
     @classmethod
-    def enable_editing_work_calendar(cls, work_calendar):
+    def enable_editing_work_calendar(cls, work_calendar: ifcopenshell.entity_instance) -> None:
         bpy.context.scene.BIMWorkCalendarProperties.active_work_calendar_id = work_calendar.id()
         bpy.context.scene.BIMWorkCalendarProperties.editing_type = "ATTRIBUTES"
 
     @classmethod
-    def disable_editing_work_calendar(cls):
+    def disable_editing_work_calendar(cls) -> None:
         bpy.context.scene.BIMWorkCalendarProperties.active_work_calendar_id = 0
 
     @classmethod
-    def get_work_calendar_attributes(cls):
+    def get_work_calendar_attributes(cls) -> dict[str, Any]:
         return blenderbim.bim.helper.export_attributes(
             bpy.context.scene.BIMWorkCalendarProperties.work_calendar_attributes
         )
 
     @classmethod
-    def load_work_time_attributes(cls, work_time):
+    def load_work_time_attributes(cls, work_time: ifcopenshell.entity_instance) -> None:
         def callback(name, prop, data):
             if name in ["Start", "Finish"]:
                 prop.string_value = "" if prop.is_null else data[name]
@@ -521,7 +520,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         blenderbim.bim.helper.import_attributes2(work_time, props.work_time_attributes, callback)
 
     @classmethod
-    def enable_editing_work_time(cls, work_time):
+    def enable_editing_work_time(cls, work_time: ifcopenshell.entity_instance) -> None:
         def initialise_recurrence_components(props):
             if len(props.day_components) == 0:
                 for i in range(0, 31):
@@ -568,7 +567,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         props.editing_type = "WORKTIMES"
 
     @classmethod
-    def get_work_time_attributes(cls):
+    def get_work_time_attributes(cls) -> dict[str, Any]:
         def callback(attributes, prop):
             if "Start" in prop.name or "Finish" in prop.name:
                 if prop.is_null:
@@ -608,11 +607,11 @@ class Sequence(blenderbim.core.tool.Sequence):
         return attributes
 
     @classmethod
-    def disable_editing_work_time(cls):
+    def disable_editing_work_time(cls) -> None:
         bpy.context.scene.BIMWorkCalendarProperties.active_work_time_id = 0
 
     @classmethod
-    def get_recurrence_pattern_times(cls):
+    def get_recurrence_pattern_times(cls) -> Union[tuple[datetime, datetime], None]:
         props = bpy.context.scene.BIMWorkCalendarProperties
         try:
             start_time = parser.parse(props.start_time)
@@ -622,40 +621,40 @@ class Sequence(blenderbim.core.tool.Sequence):
             return  # improve UI / refactor to add user hints
 
     @classmethod
-    def reset_time_period(cls):
+    def reset_time_period(cls) -> None:
         bpy.context.scene.BIMWorkCalendarProperties.start_time = ""
         bpy.context.scene.BIMWorkCalendarProperties.end_time = ""
 
     @classmethod
-    def enable_editing_task_calendar(cls, task):
+    def enable_editing_task_calendar(cls, task: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.active_task_id = task.id()
         props.editing_task_type = "CALENDAR"
 
     @classmethod
-    def enable_editing_task_sequence(cls):
+    def enable_editing_task_sequence(cls) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.editing_task_type = "SEQUENCE"
 
     @classmethod
-    def disable_editing_task_time(cls):
+    def disable_editing_task_time(cls) -> None:
         bpy.context.scene.BIMWorkScheduleProperties.active_task_id = 0
         bpy.context.scene.BIMWorkScheduleProperties.active_task_time_id = 0
 
     @classmethod
-    def load_rel_sequence_attributes(cls, rel_sequence):
+    def load_rel_sequence_attributes(cls, rel_sequence: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.sequence_attributes.clear()
         blenderbim.bim.helper.import_attributes2(rel_sequence, props.sequence_attributes)
 
     @classmethod
-    def enable_editing_rel_sequence_attributes(cls, rel_sequence):
+    def enable_editing_rel_sequence_attributes(cls, rel_sequence: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.active_sequence_id = rel_sequence.id()
         props.editing_sequence_type = "ATTRIBUTES"
 
     @classmethod
-    def load_lag_time_attributes(cls, lag_time):
+    def load_lag_time_attributes(cls, lag_time: ifcopenshell.entity_instance) -> None:
         def callback(name, prop, data):
             if name == "LagValue":
                 prop = bpy.context.scene.BIMWorkScheduleProperties.lag_time_attributes.add()
@@ -673,21 +672,21 @@ class Sequence(blenderbim.core.tool.Sequence):
         blenderbim.bim.helper.import_attributes2(lag_time, props.lag_time_attributes, callback)
 
     @classmethod
-    def enable_editing_sequence_lag_time(cls, rel_sequence):
+    def enable_editing_sequence_lag_time(cls, rel_sequence: ifcopenshell.entity_instance) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.active_sequence_id = rel_sequence.id()
         props.editing_sequence_type = "LAG_TIME"
 
     @classmethod
-    def get_rel_sequence_attributes(cls):
+    def get_rel_sequence_attributes(cls) -> dict[str, Any]:
         return blenderbim.bim.helper.export_attributes(bpy.context.scene.BIMWorkScheduleProperties.sequence_attributes)
 
     @classmethod
-    def disable_editing_rel_sequence(cls):
+    def disable_editing_rel_sequence(cls) -> None:
         bpy.context.scene.BIMWorkScheduleProperties.active_sequence_id = 0
 
     @classmethod
-    def get_lag_time_attributes(cls):
+    def get_lag_time_attributes(cls) -> dict[str, Any]:
         return blenderbim.bim.helper.export_attributes(bpy.context.scene.BIMWorkScheduleProperties.lag_time_attributes)
 
     @classmethod
@@ -698,14 +697,14 @@ class Sequence(blenderbim.core.tool.Sequence):
             obj.select_set(True) if obj else None
 
     @classmethod
-    def add_task_column(cls, column_type, name, data_type):
+    def add_task_column(cls, column_type: str, name: str, data_type: str):
         props = bpy.context.scene.BIMWorkScheduleProperties
         new = props.columns.add()
         new.name = f"{column_type}.{name}"
         new.data_type = data_type
 
     @classmethod
-    def setup_default_task_columns(cls):
+    def setup_default_task_columns(cls) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.columns.clear()
         default_columns = ["ScheduleStart", "ScheduleFinish", "ScheduleDuration"]
@@ -715,14 +714,14 @@ class Sequence(blenderbim.core.tool.Sequence):
             new.data_type = "string"
 
     @classmethod
-    def remove_task_column(cls, name):
+    def remove_task_column(cls, name: str) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.columns.remove(props.columns.find(name))
         if props.sort_column == name:
             props.sort_column = ""
 
     @classmethod
-    def set_task_sort_column(cls, column):
+    def set_task_sort_column(cls, column: str) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.sort_column = column
 
@@ -743,7 +742,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         return related_tasks
 
     @classmethod
-    def get_work_schedule(cls, task):
+    def get_work_schedule(cls, task: ifcopenshell.entity_instance) -> Union[ifcopenshell.entity_instance, None]:
         for rel in task.HasAssignments or []:
             if rel.is_a("IfcRelAssignsToControl") and rel.RelatingControl.is_a("IfcWorkSchedule"):
                 return rel.RelatingControl
@@ -779,8 +778,9 @@ class Sequence(blenderbim.core.tool.Sequence):
         expanded_tasks = [item.ifc_definition_id for item in task_props.tasks]
         bpy.context.scene.BIMWorkScheduleProperties.active_task_index = expanded_tasks.index(task.id()) or 0
 
+    # TODO: proper typing
     @classmethod
-    def guess_date_range(cls, work_schedule):
+    def guess_date_range(cls, work_schedule: ifcopenshell.entity_instance) -> tuple[Any, Any]:
         return ifcopenshell.util.sequence.guess_date_range(work_schedule)
 
     @classmethod
@@ -792,7 +792,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         props.visualisation_finish = ifcopenshell.util.date.canonicalise_time(finish_date)
 
     @classmethod
-    def get_animation_bar_tasks(cls):
+    def get_animation_bar_tasks(cls) -> list[ifcopenshell.entity_instance]:
         return [tool.Ifc.get().by_id(task_id) for task_id in cls.get_task_bar_list()]
 
     @classmethod
@@ -830,12 +830,16 @@ class Sequence(blenderbim.core.tool.Sequence):
         def create_task_bar_data(tasks, vertical_increment, collection):
             props = bpy.context.scene.BIMWorkScheduleProperties
             settings = {
-                "viz_start": parser.parse(props.visualisation_start, dayfirst=True, fuzzy=True)
-                if props.visualisation_start
-                else None,
-                "viz_finish": parser.parse(props.visualisation_finish, dayfirst=True, fuzzy=True)
-                if props.visualisation_finish
-                else None,
+                "viz_start": (
+                    parser.parse(props.visualisation_start, dayfirst=True, fuzzy=True)
+                    if props.visualisation_start
+                    else None
+                ),
+                "viz_finish": (
+                    parser.parse(props.visualisation_finish, dayfirst=True, fuzzy=True)
+                    if props.visualisation_finish
+                    else None
+                ),
                 "start_frame": bpy.context.scene.frame_start,
                 "end_frame": bpy.context.scene.frame_end,
             }
@@ -1076,19 +1080,19 @@ class Sequence(blenderbim.core.tool.Sequence):
                 predefined_type_item.color = data["Color"]
 
     @classmethod
-    def get_start_date(cls):
+    def get_start_date(cls) -> Union[datetime, None]:
         start = parser.parse(bpy.context.scene.BIMWorkScheduleProperties.visualisation_start, dayfirst=True, fuzzy=True)
-        return start if start else None
+        return start or None
 
     @classmethod
-    def get_finish_date(cls):
+    def get_finish_date(cls) -> Union[datetime, None]:
         finish = parser.parse(
             bpy.context.scene.BIMWorkScheduleProperties.visualisation_finish, dayfirst=True, fuzzy=True
         )
-        return finish if finish else None
+        return finish or None
 
     @classmethod
-    def process_construction_state(cls, work_schedule, date):
+    def process_construction_state(cls, work_schedule: ifcopenshell.entity_instance, date: datetime) -> dict[str, Any]:
         cls.to_build = set()
         cls.in_construction = set()
         cls.completed = set()
@@ -1109,7 +1113,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         }
 
     @classmethod
-    def process_task_status(cls, task, date):
+    def process_task_status(cls, task: ifcopenshell.entity_instance, date: datetime) -> None:
         for rel in task.IsNestedBy or []:
             [cls.process_task_status(related_object, date) for related_object in rel.RelatedObjects]
         start = ifcopenshell.util.sequence.derive_date(task, "ScheduleStart", is_earliest=True)
@@ -1234,7 +1238,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         }
 
     @classmethod
-    def get_animation_product_frames(cls, work_schedule, settings):
+    def get_animation_product_frames(cls, work_schedule: ifcopenshell.entity_instance, settings: dict[str, Any]):
         def preprocess_task(task):
             for subtask in ifcopenshell.util.sequence.get_nested_tasks(task):
                 preprocess_task(subtask)
@@ -1445,7 +1449,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         append_handler(animate_text_handler)
 
     @classmethod
-    def create_tasks_json(cls, work_schedule=None):
+    def create_tasks_json(cls, work_schedule: ifcopenshell.entity_instance) -> list[dict[str, Any]]:
         sequence_type_map = {
             None: "FS",
             "START_START": "SS",
@@ -1513,9 +1517,11 @@ class Sequence(blenderbim.core.tool.Sequence):
             "pParent": task.Nests[0].RelatingObject.id() if task.Nests else 0,
             "pOpen": 1,
             "pCost": 1,
-            "ifcduration": str(ifcopenshell.util.date.ifc2datetime(task_time.ScheduleDuration))
-            if (task_time and task_time.ScheduleDuration)
-            else "",
+            "ifcduration": (
+                str(ifcopenshell.util.date.ifc2datetime(task_time.ScheduleDuration))
+                if (task_time and task_time.ScheduleDuration)
+                else ""
+            ),
             "resourceUsage": resources_usage,
         }
         if task_time and task_time.IsCritical:
@@ -1535,7 +1541,9 @@ class Sequence(blenderbim.core.tool.Sequence):
             cls.create_new_task_json(nested_task, json, type_map, baseline_schedule)
 
     @classmethod
-    def generate_gantt_browser_chart(cls, task_json, work_schedule):
+    def generate_gantt_browser_chart(
+        cls, task_json: list[dict[str, Any]], work_schedule: ifcopenshell.entity_instance
+    ) -> None:
         with open(os.path.join(bpy.context.scene.BIMProperties.data_dir, "gantt", "index.html"), "w") as f:
             with open(os.path.join(bpy.context.scene.BIMProperties.data_dir, "gantt", "index.mustache"), "r") as t:
                 task_b64 = base64.b64encode(bytes(json.dumps(task_json), "utf-8")).decode("utf-8")
@@ -1545,15 +1553,19 @@ class Sequence(blenderbim.core.tool.Sequence):
         webbrowser.open("file://" + os.path.join(bpy.context.scene.BIMProperties.data_dir, "gantt", "index.html"))
 
     @classmethod
-    def is_filter_by_active_schedule(cls):
+    def is_filter_by_active_schedule(cls) -> bool:
         return bpy.context.scene.BIMWorkScheduleProperties.filter_by_active_schedule
 
     @classmethod
-    def get_tasks_for_product(cls, product, work_schedule=None):
+    def get_tasks_for_product(
+        cls, product: ifcopenshell.entity_instance, work_schedule: Optional[ifcopenshell.entity_instance] = None
+    ) -> tuple[list[ifcopenshell.entity_instance], list[ifcopenshell.entity_instance]]:
         return ifcopenshell.util.sequence.get_tasks_for_product(product, work_schedule)
 
     @classmethod
-    def load_product_related_tasks(cls, task_inputs, task_ouputs):
+    def load_product_related_tasks(
+        cls, task_inputs: list[ifcopenshell.entity_instance], task_ouputs: list[ifcopenshell.entity_instance]
+    ) -> None:
         props = bpy.context.scene.BIMWorkScheduleProperties
         props.product_input_tasks.clear()
         props.product_output_tasks.clear()
@@ -1567,7 +1579,9 @@ class Sequence(blenderbim.core.tool.Sequence):
             new.ifc_definition_id = task.id()
 
     @classmethod
-    def get_work_schedule_products(cls, work_schedule):
+    def get_work_schedule_products(
+        cls, work_schedule: ifcopenshell.entity_instance
+    ) -> list[ifcopenshell.entity_instance]:
         products = []
         for task in ifcopenshell.util.sequence.get_root_tasks(work_schedule):
             products.extend(ifcopenshell.util.sequence.get_task_inputs(task, is_deep=True))
@@ -1615,7 +1629,7 @@ class Sequence(blenderbim.core.tool.Sequence):
         bpy.ops.view3d.camera_to_view_selected()
 
     @classmethod
-    def save_animation_color_scheme(cls, name):
+    def save_animation_color_scheme(cls, name: str) -> ifcopenshell.entity_instance:
         props = bpy.context.scene.BIMAnimationProperties
         colour_scheme = {
             "Inputs": {cs.name: cs.color[0:3] for cs in props.task_input_colors},
@@ -1630,11 +1644,11 @@ class Sequence(blenderbim.core.tool.Sequence):
             group.Description = json.dumps(description)
         else:
             description = json.dumps({"type": "BBIM_AnimationColorScheme", "colourscheme": colour_scheme})
-            group = tool.Ifc.run("group.add_group", Name=name, Description=description)
+            group = tool.Ifc.run("group.add_group", name=name, description=description)
         return group[0]
 
     @classmethod
-    def load_animation_color_scheme(cls, scheme):
+    def load_animation_color_scheme(cls, scheme: Optional[ifcopenshell.entity_instance]) -> None:
         if not scheme:
             return
         data = json.loads(scheme.Description)

src/blenderbim/blenderbim/tool/spatial.py

@@ -31,6 +31,7 @@ import json
 from math import pi
 from mathutils import Vector, Matrix
 from shapely import Polygon, MultiPolygon
+from typing import Generator
 
 
 class Spatial(blenderbim.core.tool.Spatial):
@@ -147,7 +148,7 @@ class Spatial(blenderbim.core.tool.Spatial):
         target_obj.matrix_world = relative_to_obj.matrix_world @ matrix
 
     @classmethod
-    def select_products(cls, products, unhide=False):
+    def select_products(cls, products: list[ifcopenshell.entity_instance], unhide: bool = False) -> None:
         bpy.ops.object.select_all(action="DESELECT")
         for product in products:
             obj = tool.Ifc.get_object(product)
@@ -187,15 +188,15 @@ class Spatial(blenderbim.core.tool.Spatial):
         ]
 
     @classmethod
-    def get_selected_products(cls):
+    def get_selected_products(cls) -> Generator[ifcopenshell.entity_instance, None, None]:
         for obj in bpy.context.selected_objects:
             entity = tool.Ifc.get_entity(obj)
             if entity and entity.is_a("IfcProduct"):
                 yield entity
 
     @classmethod
-    def get_selected_product_types(cls):
-        for obj in bpy.context.selected_objects:
+    def get_selected_product_types(cls) -> Generator[ifcopenshell.entity_instance, None, None]:
+        for obj in tool.Blender.get_selected_objects():
             entity = tool.Ifc.get_entity(obj)
             if entity and entity.is_a("IfcTypeProduct"):
                 yield entity

src/blenderbim/blenderbim/tool/system.py

@@ -19,6 +19,9 @@
 import bpy
 import ifcopenshell.util.element
 import ifcopenshell.util.system
+import blenderbim.bim.helper
+import blenderbim.core.geometry
+import blenderbim.core.root
 import blenderbim.core.tool
 import blenderbim.tool as tool
 from blenderbim.bim import import_ifc

src/blenderbim/docs/devs/installation.rst

@@ -105,6 +105,7 @@ For Linux or Mac:
     $ rm -r $BLENDER_ADDON_PATH/libs/site/packages/ifccsv.py
     $ rm -r $BLENDER_ADDON_PATH/libs/site/packages/ifcdiff.py
     $ rm -r $BLENDER_ADDON_PATH/libs/site/packages/bsdd.py
+    $ rm -r $BLENDER_ADDON_PATH/libs/site/packages/bcf
     $ rm -r $BLENDER_ADDON_PATH/libs/site/packages/ifc4d
     $ rm -r $BLENDER_ADDON_PATH/libs/site/packages/ifc5d
     $ rm -r $BLENDER_ADDON_PATH/libs/site/packages/ifccityjson
@@ -117,6 +118,7 @@ For Linux or Mac:
     $ ln -s $PWD/src/ifccsv/ifccsv.py $BLENDER_ADDON_PATH/libs/site/packages/ifccsv.py
     $ ln -s $PWD/src/ifcdiff/ifcdiff.py $BLENDER_ADDON_PATH/libs/site/packages/ifcdiff.py
     $ ln -s $PWD/src/bsdd/bsdd.py $BLENDER_ADDON_PATH/libs/site/packages/bsdd.py
+    $ ln -s $PWD/src/bcf/src/bcf $BLENDER_ADDON_PATH/libs/site/packages/bcf
     $ ln -s $PWD/src/ifc4d/ifc4d $BLENDER_ADDON_PATH/libs/site/packages/ifc4d
     $ ln -s $PWD/src/ifc5d/ifc5d $BLENDER_ADDON_PATH/libs/site/packages/ifc5d
     $ ln -s $PWD/src/ifccityjson/ifccityjson $BLENDER_ADDON_PATH/libs/site/packages/ifccityjson
@@ -172,6 +174,7 @@ Before running it follow the instructions descibed after `rem` tags.
     del "%blenderbim%\libs\site\packages\ifccsv.py"
     del "%blenderbim%\libs\site\packages\ifcdiff.py"
     del "%blenderbim%\libs\site\packages\bsdd.py"
+    rd /S /Q "%blenderbim%\libs\site\packages\bcf"
     rd /S /Q "%blenderbim%\libs\site\packages\ifc4d"
     rd /S /Q "%blenderbim%\libs\site\packages\ifc5d"
     rd /S /Q "%blenderbim%\libs\site\packages\ifccityjson"
@@ -184,6 +187,7 @@ Before running it follow the instructions descibed after `rem` tags.
     mklink "%blenderbim%\libs\site\packages\ifccsv.py" "%cd%\src\ifccsv\ifccsv.py"
     mklink "%blenderbim%\libs\site\packages\ifcdiff.py" "%cd%\src\ifcdiff\ifcdiff.py"
     mklink "%blenderbim%\libs\site\packages\bsdd.py" "%cd%\src\bsdd\bsdd.py"
+    mklink /D "%blenderbim%\libs\site\packages\bcf" "%cd%\src\bcf\src\bcf"
     mklink /D "%blenderbim%\libs\site\packages\ifc4d" "%cd%\src\ifc4d\ifc4d"
     mklink /D "%blenderbim%\libs\site\packages\ifc5d" "%cd%\src\ifc5d\ifc5d"
     mklink /D "%blenderbim%\libs\site\packages\ifccityjson" "%cd%\src\ifccityjson\ifccityjson"

src/blenderbim/docs/users/installation.rst

@@ -42,7 +42,7 @@ Installation
    
       You do not need to unzip the add-on file. You should install it as a zipped file.
 
-   You should now see **Import-Export: BlenderBIM** available in your add-ons list. Enable the add-on by pressing the checkbox.
+   You should now see **System: BlenderBIM** available in your add-ons list. Enable the add-on by pressing the checkbox.
 
    .. image:: images/install-blenderbim-3.png
 

src/blenderbim/test/bim/test_feature.py

@@ -960,7 +960,7 @@ def run_test_code():
 def saving_sample_test_files(and_open_in_blender=None):
     filepath = f"{variables['cwd']}/test/files/temp/sample_test_file"
     blend_filepath = f"{filepath}.blend"
-    bpy.ops.export_ifc.bim(filepath=f"{filepath}.ifc", should_save_as=True)
+    bpy.ops.bim.save_project(filepath=f"{filepath}.ifc", should_save_as=True)
     bpy.ops.wm.save_as_mainfile(filepath=f"{filepath}.blend")
 
 

src/blenderbim/test/core/test_project.py

@@ -76,7 +76,9 @@ class TestCreateProject:
         project.create_empty("My Site").should_be_called().will_return("site")
         project.create_empty("My Building").should_be_called().will_return("building")
         project.create_empty("My Storey").should_be_called().will_return("storey")
-        project.run_root_assign_class(obj="project", ifc_class="IfcProject").should_be_called()
+        project.run_root_assign_class(
+            obj="project", ifc_class="IfcProject", should_add_representation=False
+        ).should_be_called()
         project.run_unit_assign_scene_units().should_be_called()
 
         self.check_contexts(project)
@@ -108,7 +110,9 @@ class TestCreateProject:
         project.create_empty("My Site").should_be_called().will_return("site")
         project.create_empty("My Building").should_be_called().will_return("building")
         project.create_empty("My Storey").should_be_called().will_return("storey")
-        project.run_root_assign_class(obj="project", ifc_class="IfcProject").should_be_called()
+        project.run_root_assign_class(
+            obj="project", ifc_class="IfcProject", should_add_representation=False
+        ).should_be_called()
         project.run_unit_assign_scene_units().should_be_called()
 
         self.check_contexts(project)
@@ -149,7 +153,9 @@ class TestCreateProject:
         project.create_empty("My Site").should_be_called().will_return("site")
         project.create_empty("My Building").should_be_called().will_return("building")
         project.create_empty("My Storey").should_be_called().will_return("storey")
-        project.run_root_assign_class(obj="project", ifc_class="IfcProject").should_be_called()
+        project.run_root_assign_class(
+            obj="project", ifc_class="IfcProject", should_add_representation=False
+        ).should_be_called()
         project.run_unit_assign_scene_units().should_be_called()
 
         self.check_contexts(project)

src/blenderbim/test/core/test_system.py

@@ -146,7 +146,9 @@ class TestAddPort:
         system.get_ports("element").should_be_called().will_return(["port"])
         system.load_ports("element", ["port"]).should_be_called()
         system.create_empty_at_cursor_with_element_orientation("element").should_be_called().will_return("obj")
-        system.run_root_assign_class(obj="obj", ifc_class="IfcDistributionPort").should_be_called().will_return("port")
+        system.run_root_assign_class(
+            obj="obj", ifc_class="IfcDistributionPort", should_add_representation=False
+        ).should_be_called().will_return("port")
         ifc.run("system.assign_port", element="element", port="port").should_be_called()
         subject.add_port(ifc, system, element="element")
 

src/blenderbim/test/tool/test_georeference.py

@@ -19,6 +19,7 @@
 import bpy
 import math
 import ifcopenshell
+import ifcopenshell.api
 import blenderbim.core.tool
 import blenderbim.tool as tool
 from mathutils import Vector