Implement support for adding BCF labels to topics

src/ifcblenderexport/blenderbim/bim/__init__.py

@@ -37,6 +37,7 @@ if bpy is not None:
         operator.AddBcfTopic,
         operator.AddBcfHeaderFile,
         operator.AddBcfReferenceLink,
+        operator.AddBcfLabel,
         operator.ViewBcfTopic,
         operator.RemoveBcfComment,
         operator.RemoveBcfReferenceLink,

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -860,6 +860,25 @@ class AddBcfReferenceLink(bpy.types.Operator):
         return {"FINISHED"}
 
 
+class AddBcfLabel(bpy.types.Operator):
+    bl_idname = "bim.add_bcf_label"
+    bl_label = "Add BCF Label"
+
+    def execute(self, context):
+        bcfxml = bcfstore.BcfStore.get_bcfxml()
+        props = bpy.context.scene.BCFProperties
+        blender_topic = props.topics[props.active_topic_index]
+        topic = bcfxml.topics[blender_topic.name]
+        if not blender_topic.label:
+            return {"FINISHED"}
+        new = blender_topic.labels.add()
+        new.name = blender_topic.label
+        topic.labels.append(blender_topic.label)
+        bcfxml.edit_topic(topic)
+        blender_topic.label = ""
+        return {"FINISHED"}
+
+
 class EditBcfReferenceLinks(bpy.types.Operator):
     bl_idname = "bim.edit_bcf_reference_links"
     bl_label = "Edit BCF Reference Link"

src/ifcblenderexport/blenderbim/bim/prop.py

@@ -1027,6 +1027,7 @@ class BcfTopic(PropertyGroup):
     reference_links: CollectionProperty(name="Reference Links", type=BcfReferenceLink)
     reference_link: StringProperty(default="", name="Reference Link")
     labels: CollectionProperty(name="Labels", type=StrProperty)
+    label: StringProperty(default="", name="Label")
     bim_snippet: PointerProperty(type=BcfBimSnippet)
     document_references: CollectionProperty(name="Document References", type=BcfDocumentReference)
     related_topics: CollectionProperty(name="Related Topics", type=StrProperty)

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -1748,30 +1748,32 @@ class BIM_PT_bcf_metadata(Panel):
         bcf_topic = bcfxml.topics[topic.name]
 
         layout.label(text="Header Files:")
-        for index, f in enumerate(bcf_topic.header.files):
-            box = self.layout.box()
-            row = box.row(align=True)
-            row.label(text=f.filename, icon="FILE_BLANK")
-            if f.is_external:
-                row.operator("bim.open_uri", icon="URL", text="").uri = f.reference
-            else:
-                op = row.operator("bim.open_uri", icon="FILE_FOLDER", text="")
-                op.uri = os.path.join(bcfxml.filepath, topic.name, f.reference)
-            row.operator("bim.remove_bcf_file", icon="X", text="").index = index
 
-            row = box.row()
-            row.label(text="Date")
-            row.label(text=f.date)
+        if bcf_topic.header:
+            for index, f in enumerate(bcf_topic.header.files):
+                box = self.layout.box()
+                row = box.row(align=True)
+                row.label(text=f.filename, icon="FILE_BLANK")
+                if f.is_external:
+                    row.operator("bim.open_uri", icon="URL", text="").uri = f.reference
+                else:
+                    op = row.operator("bim.open_uri", icon="FILE_FOLDER", text="")
+                    op.uri = os.path.join(bcfxml.filepath, topic.name, f.reference)
+                row.operator("bim.remove_bcf_file", icon="X", text="").index = index
 
-            if f.ifc_project:
                 row = box.row()
-                row.label(text="IFC Project")
-                row.label(text=f.ifc_project)
+                row.label(text="Date")
+                row.label(text=f.date)
 
-            if f.ifc_spatial_structure_element:
-                row = box.row()
-                row.label(text="IFC Spatial Structure Element")
-                row.label(text=f.ifc_spatial_structure_element)
+                if f.ifc_project:
+                    row = box.row()
+                    row.label(text="IFC Project")
+                    row.label(text=f.ifc_project)
+
+                if f.ifc_spatial_structure_element:
+                    row = box.row()
+                    row.label(text="IFC Spatial Structure Element")
+                    row.label(text=f.ifc_spatial_structure_element)
 
         row = layout.row(align=True)
         row.prop(topic, "file_reference")
@@ -1800,6 +1802,10 @@ class BIM_PT_bcf_metadata(Panel):
             row = layout.row(align=True)
             row.prop(label, "name", text="")
             row.operator("bim.remove_bcf_label", icon="X", text="").index = index
+        row = layout.row()
+        row.prop(topic, "label")
+        row = layout.row()
+        row.operator("bim.add_bcf_label")
 
         if topic.bim_snippet.schema:
             layout.label(text="BIM Snippet:")