Implement remove BCF related topic

src/bcf/bcf/bcfxml.py

@@ -537,6 +537,7 @@ class BcfXml:
             topic_filepath = os.path.join(self.filepath, topic.guid)
             filename = os.path.basename(document_reference.referenced_document)
             copyfile(document_reference.referenced_document, os.path.join(topic_filepath, filename))
+            document_reference.referenced_document = filename
             document_reference.is_external = False
         else:
             document_reference.is_external = True

src/ifcblenderexport/blenderbim/bim/__init__.py

@@ -46,6 +46,7 @@ if bpy is not None:
         operator.RemoveBcfBimSnippet,
         operator.RemoveBcfReferenceLink,
         operator.RemoveBcfDocumentReference,
+        operator.RemoveBcfRelatedTopic,
         operator.EditBcfReferenceLinks,
         operator.EditBcfLabels,
         operator.RemoveBcfLabel,

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -1038,6 +1038,22 @@ class RemoveBcfDocumentReference(bpy.types.Operator):
         return {"FINISHED"}
 
 
+class RemoveBcfRelatedTopic(bpy.types.Operator):
+    bl_idname = "bim.remove_bcf_related_topic"
+    bl_label = "Remove BCF Related Topic"
+    index: bpy.props.IntProperty()
+
+    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]
+        del topic.related_topics[self.index]
+        bcfxml.edit_topic(topic)
+        bpy.ops.bim.load_bcf_topic(topic_guid = topic.guid, topic_index = props.active_topic_index)
+        return {"FINISHED"}
+
+
 class RemoveBcfComment(bpy.types.Operator):
     bl_idname = "bim.remove_bcf_comment"
     bl_label = "Remove BCF Comment"

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -1859,11 +1859,11 @@ class BIM_PT_bcf_metadata(Panel):
         row = layout.row()
         row.operator("bim.add_bcf_document_reference")
 
-        if topic.related_topics:
-            layout.label(text="Related Topics:")
-            for related_topic in topic.related_topics:
-                row = layout.row(align=True)
-                row.operator("bim.view_bcf_topic", text=related_topic.name).topic_guid = related_topic.name
+        layout.label(text="Related Topics:")
+        for index, related_topic in enumerate(topic.related_topics):
+            row = layout.row(align=True)
+            row.operator("bim.view_bcf_topic", text=bcfxml.topics[related_topic.name.lower()].title).topic_guid = related_topic.name
+            row.operator("bim.remove_bcf_related_topic", icon="X", text="").index = index
 
 
 class BIM_PT_bcf_comments(Panel):