Implement unassigning products to tasks

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

@@ -40,6 +40,7 @@ classes = (
     operator.DisableEditingTaskTime,
     operator.EditTaskTime,
     operator.AssignProduct,
+    operator.UnassignProduct,
     prop.WorkPlan,
     prop.BIMWorkPlanProperties,
     prop.Task,

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

@@ -761,3 +761,25 @@ class AssignProduct(bpy.types.Operator):
             )
         Data.load(self.file)
         return {"FINISHED"}
+
+
+class UnassignProduct(bpy.types.Operator):
+    bl_idname = "bim.unassign_product"
+    bl_label = "Unassign Product"
+    task: bpy.props.IntProperty()
+    related_product: bpy.props.StringProperty()
+
+    def execute(self, context):
+        related_products = (
+            [bpy.data.objects.get(self.related_product)] if self.related_product else bpy.context.selected_objects
+        )
+        for related_product in related_products:
+            self.file = IfcStore.get_file()
+            ifcopenshell.api.run(
+                "sequence.unassign_product",
+                self.file,
+                relating_product=self.file.by_id(related_product.BIMObjectProperties.ifc_definition_id),
+                related_object=self.file.by_id(self.task),
+            )
+        Data.load(self.file)
+        return {"FINISHED"}

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

@@ -261,6 +261,16 @@ class BIM_UL_tasks(UIList):
                 row.prop(item, "finish", emboss=False, text="")
                 row.prop(item, "duration", emboss=False, text="")
 
+            if context.active_object:
+                oprops = context.active_object.BIMObjectProperties
+                row = layout.row(align=True)
+                if oprops.ifc_definition_id in Data.tasks[item.ifc_definition_id]["RelatingProducts"]:
+                    op = row.operator("bim.unassign_product", text="", icon="KEYFRAME_HLT", emboss=False)
+                    op.task = item.ifc_definition_id
+                else:
+                    op = row.operator("bim.assign_product", text="", icon="KEYFRAME", emboss=False)
+                    op.task = item.ifc_definition_id
+
             if props.active_task_id == item.ifc_definition_id:
                 if props.active_task_time_id:
                     row.operator("bim.edit_task_time", text="", icon="CHECKMARK")
@@ -293,5 +303,3 @@ class BIM_UL_tasks(UIList):
                 row.operator("bim.enable_editing_task", text="", icon="GREASEPENCIL").task = item.ifc_definition_id
                 row.operator("bim.add_task", text="", icon="ADD").task = item.ifc_definition_id
                 row.operator("bim.remove_task", text="", icon="X").task = item.ifc_definition_id
-            row = layout.row(align=True)
-            row.operator("bim.assign_product", text="ADD", icon="OUTLINER_COLLECTION").task = item.ifc_definition_id

src/ifcopenshell-python/ifcopenshell/api/sequence/add_task.py

@@ -1,6 +1,7 @@
 import ifcopenshell.api
 import ifcopenshell
 
+
 class Usecase:
     def __init__(self, file, **settings):
         self.file = file
@@ -16,9 +17,9 @@ class Usecase:
             "root.create_entity",
             self.file,
             ifc_class="IfcTask",
-            name= None,
-            predefined_type= "NOTDEFINED",
-            identification= "none",
+            name=None,
+            predefined_type="NOTDEFINED",
+            identification="none",
         )
         task.IsMilestone = False
         if self.settings["work_schedule"]:
@@ -33,6 +34,6 @@ class Usecase:
             )
         elif self.settings["parent_task"]:
             ifcopenshell.api.run(
-                "nest.assign_object", self.file, object=task, relating_object=self.settings["parent_task"]
+                "nest.assign_object", self.file, related_object=task, relating_object=self.settings["parent_task"]
             )
         return task

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

@@ -79,12 +79,18 @@ class Data:
             data = task.get_info()
             del data["OwnerHistory"]
             data["RelatedObjects"] = []
+            data["RelatingProducts"] = []
             data["IsPredecessorTo"] = []
             data["IsSuccessorFrom"] = []
             if task.TaskTime:
                 data["TaskTime"] = data["TaskTime"].id()
             for rel in task.IsNestedBy:
                 [data["RelatedObjects"].append(o.id()) for o in rel.RelatedObjects if o.is_a("IfcTask")]
+            [
+                data["RelatingProducts"].append(r.RelatingProduct.id())
+                for r in task.HasAssignments
+                if r.is_a("IfcRelAssignsToProduct")
+            ]
             [data["IsPredecessorTo"].append(rel.RelatedProcess.id()) for rel in task.IsPredecessorTo or []]
             [data["IsSuccessorFrom"].append(rel.RelatingProcess.id()) for rel in task.IsSuccessorFrom or []]
             cls.tasks[task.id()] = data

src/ifcopenshell-python/ifcopenshell/api/sequence/unassign_product.py

@@ -0,0 +1,25 @@
+import ifcopenshell
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {
+            "relating_product": None,
+            "related_object": None,
+        }
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        for rel in self.settings["related_object"].HasAssignments or []:
+            if not rel.is_a("IfcRelAssignsToProduct") or rel.RelatingProduct != self.settings["relating_product"]:
+                continue
+            if len(rel.RelatedObjects) == 1:
+                return self.file.remove(rel)
+            related_objects = list(rel.RelatedObjects)
+            related_objects.remove(self.settings["related_object"])
+            rel.RelatedObjects = related_objects
+            ifcopenshell.api.run("owner.update_owner_history", self.file, **{"element": rel})
+            return rel