New purge classifications feature, and imported systems shows up immediately

src/ifcblenderexport/blenderbim/bim/__init__.py

@@ -184,6 +184,7 @@ if bpy is not None:
         operator.SaveDrawingStyle,
         operator.ActivateDrawingStyle,
         operator.EditVectorStyle,
+        operator.PurgeProjectClassifications,
         prop.StrProperty,
         prop.Variable,
         prop.Role,

src/ifcblenderexport/blenderbim/bim/import_ifc.py

@@ -1431,11 +1431,16 @@ class IfcImporter():
             classification_filename = '{}-{}'.format(
                 Path(os.path.basename(self.ifc_import_settings.input_file)).stem, element.Name)
             classification_file.write(os.path.join(
-                bpy.context.scene.BIMProperties.schema_dir, 'classifications',
+                bpy.context.scene.BIMProperties.schema_dir, 'project_classifications',
                 '{}.ifc'.format(classification_filename)))
             classification.filename = classification_filename
             self.classifications[classification.filename] = classification
 
+        self.schema_dir = bpy.context.scene.BIMProperties.schema_dir
+        from . import prop
+        prop.classification_enum.clear()
+        prop.getClassifications(self, bpy.context)
+
     def get_classification_references(self, references):
         results = []
         for reference in references:

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -1871,7 +1871,7 @@ class AddClassification(bpy.types.Operator):
             'reference_tokens': 'ReferenceTokens'
         }
         for key, value in data_map.items():
-            if getattr(data, value):
+            if hasattr(data, value) and getattr(data, value):
                 setattr(classification, key, str(getattr(data, value)))
         classification.filename = context.scene.BIMProperties.classification
         return {'FINISHED'}
@@ -3572,10 +3572,25 @@ class RemoveDrawing(bpy.types.Operator):
 class EditVectorStyle(bpy.types.Operator):
     bl_idname = 'bim.edit_vector_style'
     bl_label = 'Edit Vector Style'
-    index: bpy.props.IntProperty()
 
     def execute(self, context):
         camera = context.scene.camera
         vector_style = context.scene.DocProperties.drawing_styles[camera.data.BIMCameraProperties.active_drawing_style_index].vector_style
         bpy.data.texts.load(os.path.join(context.scene.BIMProperties.data_dir, 'styles', vector_style + '.css'))
         return {'FINISHED'}
+
+
+class PurgeProjectClassifications(bpy.types.Operator):
+    bl_idname = 'bim.purge_project_classifications'
+    bl_label = 'Purge Project Classifications'
+
+    def execute(self, context):
+        self.schema_dir = bpy.context.scene.BIMProperties.schema_dir
+        path = os.path.join(self.schema_dir, 'project_classifications')
+        files = os.listdir(path)
+        for f in files:
+            os.remove(os.path.join(path, f))
+        from . import prop
+        prop.classification_enum.clear()
+        prop.getClassifications(self, context)
+        return {'FINISHED'}

src/ifcblenderexport/blenderbim/bim/prop.py

@@ -304,6 +304,8 @@ def getClassifications(self, context):
         classification_enum.clear()
         files = os.listdir(os.path.join(self.schema_dir, 'classifications'))
         classification_enum.extend([(f.replace('.ifc', ''), f.replace('.ifc', ''), '') for f in files])
+        files = os.listdir(os.path.join(self.schema_dir, 'project_classifications'))
+        classification_enum.extend([(f.replace('.ifc', ''), f.replace('.ifc', ''), '') for f in files])
     return classification_enum
 
 

src/ifcblenderexport/blenderbim/bim/schema.py

@@ -65,6 +65,8 @@ class IfcSchema():
     def load_classification(self, filename):
         if filename not in self.classifications:
             classification_path = os.path.join(self.schema_dir, 'classifications', '{}.ifc'.format(filename))
+            if not os.path.isfile(classification_path):
+                classification_path = os.path.join(self.schema_dir, 'project_classifications', '{}.ifc'.format(filename))
             self.classification_files[filename] = ifcopenshell.open(classification_path)
             self.classifications[filename] = self.classification_files[filename].by_type('IfcClassification')[0]
         classification = self.classifications[filename]

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -512,6 +512,7 @@ class BIM_PT_classifications(Panel):
 
         row = layout.row(align=True)
         row.prop(props, "classification", text='')
+        row.operator("bim.purge_project_classifications", text='', icon='TRASH')
         row.operator("bim.add_classification", text='', icon='ADD')
 
         if context.scene.BIMProperties.classification_references.raw_data: