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
-        props.active_cost_schedule_id = self.cost_schedule
+        self.props = context.scene.BIMCostProperties
+        self.props.active_cost_schedule_id = self.cost_schedule
 
-        while len(props.cost_schedule_attributes) > 0:
-            props.cost_schedule_attributes.remove(0)
+        while len(self.props.cost_schedule_attributes) > 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:
-                for attribute in props.cost_schedule_attributes:
-                    row = self.layout.row(align=True)
-                    if attribute.data_type == "string":
-                        row.prop(attribute, "string_value", text=attribute.name)
-                    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="")
+            if self.props.active_cost_schedule_id == cost_schedule_id:
+                self.draw_editable_cost_schedule_ui(cost_schedule_id, cost_schedule)
+
+    def draw_editable_cost_schedule_ui(self, cost_schedule_id, cost_schedule):
+        for attribute in self.props.cost_schedule_attributes:
+            row = self.layout.row(align=True)
+            if attribute.data_type == "string":
+                row.prop(attribute, "string_value", text=attribute.name)
+            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)