You can now add cost items into a cost schedule, and as sub items to a parent cost item. Thanks myoualid and Jesusbill!

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

@@ -7,8 +7,11 @@ classes = (
     operator.EditCostSchedule,
     operator.EnableEditingCostSchedule,
     operator.DisableEditingCostSchedule,
+    operator.AddCostItem,
+    prop.CostItem,
     prop.BIMCostProperties,
     ui.BIM_PT_cost_schedules,
+    ui.BIM_UL_cost_items,
 )
 
 

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

@@ -36,11 +36,11 @@ class EnableEditingCostSchedule(bpy.types.Operator):
     cost_schedule: bpy.props.IntProperty()
 
     def execute(self, context):
-        props = context.scene.BIMCostProperties
+        self.props = context.scene.BIMCostProperties
-        props.active_cost_schedule_id = self.cost_schedule
+        self.props.active_cost_schedule_id = self.cost_schedule
 
-        while len(props.cost_schedule_attributes) > 0:
+        while len(self.props.cost_schedule_attributes) > 0:
-            props.cost_schedule_attributes.remove(0)
+            self.props.cost_schedule_attributes.remove(0)
 
         data = Data.cost_schedules[self.cost_schedule]
 
@@ -48,7 +48,7 @@ class EnableEditingCostSchedule(bpy.types.Operator):
             data_type = ifcopenshell.util.attribute.get_primitive_type(attribute)
             if data_type == "entity":
                 continue
-            new = props.cost_schedule_attributes.add()
+            new = self.props.cost_schedule_attributes.add()
             new.name = attribute.name()
             new.is_null = data[attribute.name()] is None
             new.is_optional = attribute.optional()
@@ -61,8 +61,26 @@ class EnableEditingCostSchedule(bpy.types.Operator):
                 new.enum_items = json.dumps(ifcopenshell.util.attribute.get_enum_items(attribute))
                 if data[attribute.name()]:
                     new.enum_value = data[attribute.name()]
+
+        while len(self.props.cost_items) > 0:
+            self.props.cost_items.remove(0)
+
+        for related_object_id in Data.cost_schedules[self.cost_schedule]["RelatedObjects"]:
+            self.create_new_cost_item_li(related_object_id, 0)
         return {"FINISHED"}
 
+    def create_new_cost_item_li(self, related_object_id, level_index):
+        cost_item = Data.cost_items[related_object_id]
+        new = self.props.cost_items.add()
+        new.name = cost_item["Name"] or "Unnamed"
+        new.ifc_definition_id = related_object_id
+        new.is_expanded = False
+        new.level_index = level_index
+        if cost_item["RelatedObjects"]:
+            new.has_children = True
+            for related_object_id in cost_item["RelatedObjects"]:
+                self.create_new_cost_item_li(related_object_id, level_index + 1)
+
 
 class DisableEditingCostSchedule(bpy.types.Operator):
     bl_idname = "bim.disable_editing_cost_schedule"
@@ -98,3 +116,21 @@ class EditCostSchedule(bpy.types.Operator):
         Data.load(IfcStore.get_file())
         bpy.ops.bim.disable_editing_cost_schedule()
         return {"FINISHED"}
+
+
+class AddCostItem(bpy.types.Operator):
+    bl_idname = "bim.add_cost_item"
+    bl_label = "Add Cost Item"
+    cost_schedule: bpy.props.IntProperty()
+
+    def execute(self, context):
+        props = context.scene.BIMCostProperties
+        self.file = IfcStore.get_file()
+        if len(props.cost_items):
+            data = {"cost_item": self.file.by_id(props.cost_items[props.active_cost_item_index].ifc_definition_id)}
+        else:
+            data = {"cost_schedule": self.file.by_id(self.cost_schedule)}
+        ifcopenshell.api.run("cost.add_cost_item", self.file, **data)
+        Data.load(self.file)
+        bpy.ops.bim.enable_editing_cost_schedule(cost_schedule = self.cost_schedule)
+        return {"FINISHED"}

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

@@ -13,6 +13,16 @@ from bpy.props import (
 )
 
 
+class CostItem(PropertyGroup):
+    name: StringProperty(name="Name")
+    ifc_definition_id: IntProperty(name="IFC Definition ID")
+    has_children: BoolProperty(name="Has Children")
+    is_expanded: BoolProperty(name="Is Expanded")
+    level_index: IntProperty(name="Level Index")
+
+
 class BIMCostProperties(PropertyGroup):
     cost_schedule_attributes: CollectionProperty(name="Cost Schedule Attributes", type=Attribute)
     active_cost_schedule_id: IntProperty(name="Active Cost Schedule Id")
+    cost_items: CollectionProperty(name="Work Calendar", type=CostItem)
+    active_cost_item_index: IntProperty(name="Active Cost Item Index")

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

@@ -16,7 +16,7 @@ class BIM_PT_cost_schedules(Panel):
         return IfcStore.get_file()
 
     def draw(self, context):
-        props = context.scene.BIMCostProperties
+        self.props = context.scene.BIMCostProperties
 
         if not Data.is_loaded:
             Data.load(IfcStore.get_file())
@@ -28,21 +28,53 @@ class BIM_PT_cost_schedules(Panel):
             row = self.layout.row(align=True)
             row.label(text=cost_schedule["Name"] or "Unnamed", icon="LINENUMBERS_ON")
 
-            if props.active_cost_schedule_id and props.active_cost_schedule_id == cost_schedule_id:
+            if self.props.active_cost_schedule_id and self.props.active_cost_schedule_id == cost_schedule_id:
                 row.operator("bim.edit_cost_schedule", text="", icon="CHECKMARK")
                 row.operator("bim.disable_editing_cost_schedule", text="", icon="X")
-            elif props.active_cost_schedule_id:
+            elif self.props.active_cost_schedule_id:
                 row.operator("bim.remove_cost_schedule", text="", icon="X").cost_schedule = cost_schedule_id
             else:
                 row.operator("bim.enable_editing_cost_schedule", text="", icon="GREASEPENCIL").cost_schedule = cost_schedule_id
                 row.operator("bim.remove_cost_schedule", text="", icon="X").cost_schedule = cost_schedule_id
 
-            if props.active_cost_schedule_id == cost_schedule_id:
+            if self.props.active_cost_schedule_id == cost_schedule_id:
-                for attribute in props.cost_schedule_attributes:
+                self.draw_editable_cost_schedule_ui(cost_schedule_id, cost_schedule)
-                    row = self.layout.row(align=True)
+
-                    if attribute.data_type == "string":
+    def draw_editable_cost_schedule_ui(self, cost_schedule_id, cost_schedule):
-                        row.prop(attribute, "string_value", text=attribute.name)
+        for attribute in self.props.cost_schedule_attributes:
-                    elif attribute.data_type == "enum":
+            row = self.layout.row(align=True)
-                        row.prop(attribute, "enum_value", text=attribute.name)
+            if attribute.data_type == "string":
-                    if attribute.is_optional:
+                row.prop(attribute, "string_value", text=attribute.name)
-                        row.prop(attribute, "is_null", icon="RADIOBUT_OFF" if attribute.is_null else "RADIOBUT_ON", text="")
+            elif attribute.data_type == "enum":
+                row.prop(attribute, "enum_value", text=attribute.name)
+            if attribute.is_optional:
+                row.prop(attribute, "is_null", icon="RADIOBUT_OFF" if attribute.is_null else "RADIOBUT_ON", text="")
+
+        row = self.layout.row(align=True)
+        row.label(text="X Cost Items")
+        row.operator("bim.add_cost_item", text="", icon="ADD").cost_schedule = cost_schedule_id
+
+        self.layout.template_list(
+            "BIM_UL_cost_items",
+            "",
+            self.props,
+            "cost_items",
+            self.props,
+            "active_cost_item_index",
+        )
+
+
+class BIM_UL_cost_items(UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+        if item:
+            row = layout.row(align=True)
+            for i in range(0, item.level_index):
+                row.label(text="", icon="BLANK1")
+            if item.has_children:
+                if item.is_expanded:
+                    row.operator("bim.edit_work_calendar", text="", emboss=False, icon="DISCLOSURE_TRI_DOWN")
+                else:
+                    row.operator("bim.edit_work_calendar", text="", emboss=False, icon="DISCLOSURE_TRI_RIGHT")
+            else:
+                row.label(text="", icon="DOT")
+            row.label(text=item.name)

src/ifcopenshell-python/ifcopenshell/api/cost/add_cost_item.py

@@ -0,0 +1,28 @@
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"cost_schedule": None, "cost_item": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        cost_item = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcCostItem")
+
+        if self.settings["cost_schedule"]:
+            self.file.create_entity(
+                "IfcRelAssignsToControl",
+                **{
+                    "GlobalId": ifcopenshell.guid.new(),
+                    "OwnerHistory": ifcopenshell.api.run("owner.create_owner_history", self.file),
+                    "RelatedObjects": [cost_item],
+                    "RelatingControl": self.settings["cost_schedule"],
+                }
+            )
+        elif self.settings["cost_item"]:
+            ifcopenshell.api.run(
+                "nest.assign_object", self.file, object=cost_item, relating_object=self.settings["cost_item"]
+            )
+        return cost_item

src/ifcopenshell-python/ifcopenshell/api/cost/data.py

@@ -4,15 +4,19 @@ import ifcopenshell.util.date
 class Data:
     is_loaded = False
     cost_schedules = {}
+    cost_items = {}
 
     @classmethod
     def purge(cls):
         cls.is_loaded = False
         cls.cost_schedules = {}
+        cls.cost_items = {}
 
     @classmethod
     def load(cls, file):
         cls.cost_schedules = {}
+        cls.cost_items = {}
+
         for cost_schedule in file.by_type("IfcCostSchedule"):
             data = cost_schedule.get_info()
             del data["OwnerHistory"]
@@ -20,5 +24,21 @@ class Data:
                 data["SubmittedOn"] = ifcopenshell.util.date.ifc2datetime(data["SubmittedOn"])
             if data["UpdateDate"]:
                 data["UpdateDate"] = ifcopenshell.util.date.ifc2datetime(data["UpdateDate"])
+            data["RelatedObjects"] = []
+            for rel in cost_schedule.Controls:
+                for related_object in rel.RelatedObjects:
+                    if related_object.is_a("IfcCostItem"):
+                        data["RelatedObjects"].append(related_object.id())
+                        break # We are only allowed one summary cost item
             cls.cost_schedules[cost_schedule.id()] = data
+
+        for cost_item in file.by_type("IfcCostItem"):
+            data = cost_item.get_info()
+            del data["OwnerHistory"]
+            del data["CostValues"]
+            del data["CostQuantities"]
+            data["RelatedObjects"] = []
+            for rel in cost_item.IsNestedBy:
+                [data["RelatedObjects"].append(o.id()) for o in rel.RelatedObjects if o.is_a("IfcCostItem")]
+            cls.cost_items[cost_item.id()] = data
         cls.is_loaded=True

src/ifcopenshell-python/ifcopenshell/api/nest/assign_object.py

@@ -0,0 +1,53 @@
+import ifcopenshell
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {
+            "object": None,
+            "relating_object": None,
+        }
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        nests = None
+        if self.settings["object"].Nests:
+            nests = self.settings["object"].Nests[0]
+
+        is_nested_by = None
+        for rel in self.settings["relating_object"].IsNestedBy:
+            if rel.is_a("IfcRelNests"):
+                is_nested_by = rel
+                break
+
+        if nests and nests == is_nested_by:
+            return
+
+        if nests:
+            related_objects = list(nests.RelatedObjects)
+            related_objects.remove(self.settings["object"])
+            if related_objects:
+                nests.RelatedObjects = related_objects
+                ifcopenshell.api.run("owner.update_owner_history", self.file, **{"element": nests})
+            else:
+                self.file.remove(nests)
+
+        if is_nested_by:
+            related_objects = list(is_nested_by.RelatedObjects)
+            related_objects.append(self.settings["object"])
+            is_nested_by.RelatedObjects = related_objects
+            ifcopenshell.api.run("owner.update_owner_history", self.file, **{"element": is_nested_by})
+        else:
+            is_nested_by = self.file.create_entity(
+                "IfcRelNests",
+                **{
+                    "GlobalId": ifcopenshell.guid.new(),
+                    "OwnerHistory": ifcopenshell.api.run("owner.create_owner_history", self.file),
+                    "RelatedObjects": [self.settings["object"]],
+                    "RelatingObject": self.settings["relating_object"],
+                }
+            )
+        return is_nested_by