New UI to manage IFC constraints in the file

src/ifcblenderexport/blenderbim/bim/prop.py

@@ -483,6 +483,36 @@ class ClashSet(PropertyGroup):
     b: CollectionProperty(name='Group B', type=ClashSource)
 
 
+class Constraint(PropertyGroup):
+    name: StringProperty(name='Name')
+    description: StringProperty(name='Description')
+    constraint_grade: EnumProperty(items=[
+        ('HARD', 'HARD', 'Qualifies a constraint such that it must be followed rigidly within or at the values set.'),
+        ('SOFT', 'SOFT', 'Qualifies a constraint such that it should be followed within or at the values set.'),
+        ('ADVISORY', 'ADVISORY', 'Qualifies a constraint such that it is advised that it is followed within or at the values set.'),
+        ('USERDEFINED', 'USERDEFINED', 'A user-defined grade indicated by a separate attribute at the referencing entity.'),
+        ('NOTDEFINED', 'NOTDEFINED', 'Grade has not been specified.'),
+        ], name='Grade')
+    constraint_source: StringProperty(name='Source')
+    user_defined_grade: StringProperty(name='Custom Grade')
+    objective_qualifier: EnumProperty(items=[
+        ('CODECOMPLIANCE', 'CODECOMPLIANCE', 'A constraint whose objective is to ensure satisfaction of a code compliance provision.'),
+        ('CODEWAIVER', 'CODEWAIVER', 'A constraint whose objective is to identify an agreement that code compliance requirements (the waiver) will not be enforced.'),
+        ('DESIGNINTENT', 'DESIGNINTENT', 'A constraint whose objective is to ensure satisfaction of a design intent provision.'),
+        ('EXTERNAL', 'EXTERNAL', 'A constraint whose objective is to synchronize data with an external source such as a file'),
+        ('HEALTHANDSAFETY', 'HEALTHANDSAFETY', 'A constraint whose objective is to ensure satisfaction of a health and safety provision.'),
+        ('MERGECONFLICT', 'MERGECONFLICT', 'A constraint whose objective is to resolve a conflict such as merging data from multiple sources.'),
+        ('MODELVIEW', 'MODELVIEW', 'A constraint whose objective is to ensure data conforms to a model view definition.'),
+        ('PARAMETER', 'PARAMETER', 'A constraint whose objective is to calculate a value based on other referenced values.'),
+        ('REQUIREMENT', 'REQUIREMENT', 'A constraint whose objective is to ensure satisfaction of a project requirement provision.'),
+        ('SPECIFICATION', 'SPECIFICATION', 'A constraint whose objective is to ensure satisfaction of a specification provision.'),
+        ('TRIGGERCONDITION', 'TRIGGERCONDITION', 'A constraint whose objective is to indicate a limiting value beyond which the condition of an object requires a particular form of attention.'),
+        ('USERDEFINED', 'USERDEFINED', ''),
+        ('NOTDEFINED', 'NOTDEFINED', '')
+        ], name='Qualifier')
+    user_defined_qualifier: StringProperty(name='Custom Qualifier')
+
+
 class BcfTopic(PropertyGroup):
     name: StringProperty(name='Name')
 
@@ -956,6 +986,8 @@ class BIMProperties(PropertyGroup):
     active_document_reference_index: IntProperty(name='Active Document Reference Index')
     clash_sets: CollectionProperty(name='Clash Sets', type=ClashSet)
     active_clash_set_index: IntProperty(name='Active Clash Set Index')
+    constraints: CollectionProperty(name='Constraints', type=Constraint)
+    active_constraint_index: IntProperty(name='Active Constraint Index')
 
 
 class BCFProperties(PropertyGroup):