You can now add new BCF topics to a BCF project

src/ifcblenderexport/blenderbim/bim/__init__.py

@@ -27,6 +27,7 @@ if bpy is not None:
         operator.SelectType,
         operator.LoadBcfProject,
         operator.SaveBcfProject,
+        operator.AddBcfTopic,
         operator.ViewBcfTopic,
         operator.ActivateBcfViewpoint,
         operator.OpenBcfFileReference,

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -517,13 +517,14 @@ class LoadBcfProject(bpy.types.Operator):
 
         bcfplugin.openProject(self.filepath)
         bcf.BcfStore.topics = bcfplugin.getTopics()
+        bpy.context.scene.BCFProperties.is_editable = False
+        bpy.context.scene.BCFProperties.name = bcfplugin.getProjectName()
         while len(bpy.context.scene.BCFProperties.topics) > 0:
             bpy.context.scene.BCFProperties.topics.remove(0)
         for topic in bcf.BcfStore.topics:
             new = bpy.context.scene.BCFProperties.topics.add()
             new.name = topic[0]
-        # Note: set this last, as we use it to check whether or not the project has been loaded
-        bpy.context.scene.BCFProperties.name = bcfplugin.getProjectName()
+        bpy.context.scene.BCFProperties.is_editable = True
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -546,6 +547,21 @@ class SaveBcfProject(bpy.types.Operator):
         return {"RUNNING_MODAL"}
 
 
+class AddBcfTopic(bpy.types.Operator):
+    bl_idname = "bim.add_bcf_topic"
+    bl_label = "Add BCF Topic"
+
+    def execute(self, context):
+        import bcfplugin
+        bcfplugin.addTopic("New Topic", bpy.context.scene.BCFProperties.author)
+        bpy.context.scene.BCFProperties.is_editable = False
+        new = bpy.context.scene.BCFProperties.topics.add()
+        new.name = "New Topic"
+        bcf.BcfStore.topics = bcfplugin.getTopics()
+        bpy.context.scene.BCFProperties.is_editable = True
+        return {"FINISHED"}
+
+
 class ViewBcfTopic(bpy.types.Operator):
     bl_idname = "bim.view_bcf_topic"
     bl_label = "Get BCF Topic"

src/ifcblenderexport/blenderbim/bim/prop.py

@@ -916,6 +916,8 @@ def updateBcfProjectName(self, context):
 
 
 def updateBcfTopicAttribute(context, name, value):
+    if not bpy.context.scene.BCFProperties.is_editable:
+        return
     import bcfplugin
     props = bpy.context.scene.BCFProperties
     topic = bcf.BcfStore.topics[props.active_topic_index][1]
@@ -925,8 +927,7 @@ def updateBcfTopicAttribute(context, name, value):
 
 
 def updateBcfTopicName(self, context):
-    if bpy.context.scene.BCFProperties.name:
-        updateBcfTopicAttribute(context, "title", self.name)
+    updateBcfTopicAttribute(context, "title", self.name)
 
 
 def updateBcfTopicType(self, context):
@@ -945,6 +946,10 @@ def updateBcfTopicStage(self, context):
     updateBcfTopicAttribute(context, "stage", self.topic_stage)
 
 
+def updateBcfTopicDescription(self, context):
+    updateBcfTopicAttribute(context, "description", self.topic_description)
+
+
 class BcfTopic(PropertyGroup):
     name: StringProperty(name="Name", update=updateBcfTopicName)
 
@@ -1634,6 +1639,7 @@ class BIMProperties(PropertyGroup):
 
 
 class BCFProperties(PropertyGroup):
+    is_editable: BoolProperty(name="Is Editable", default=False)
     name: StringProperty(default="", name="Project Name", update=updateBcfProjectName)
     author: StringProperty(default="john@doe.com", name="Author Email")
     topics: CollectionProperty(name="BCF Topics", type=BcfTopic)
@@ -1650,7 +1656,7 @@ class BCFProperties(PropertyGroup):
     topic_modified_author: StringProperty(default="", name="Topic Modified By")
     topic_assigned_to: StringProperty(default="", name="Topic Assigned To")
     topic_due_date: StringProperty(default="", name="Topic Due Date")
-    topic_description: StringProperty(default="", name="Topic Description")
+    topic_description: StringProperty(default="", name="Topic Description", update=updateBcfTopicDescription)
     topic_labels: CollectionProperty(name="BCF Topic Labels", type=BcfTopicLabel)
     topic_files: CollectionProperty(name="BCF Topic Files", type=BcfTopicFile)
     topic_links: CollectionProperty(name="BCF Topic Links", type=BcfTopicLink)

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -1678,7 +1678,10 @@ class BIM_PT_bcf(Panel):
             return
 
         props = bpy.context.scene.BCFProperties
-        layout.template_list("BIM_UL_topics", "", props, "topics", props, "active_topic_index")
+        row = layout.row()
+        row.template_list("BIM_UL_topics", "", props, "topics", props, "active_topic_index")
+        col = row.column(align=True)
+        col.operator("bim.add_bcf_topic", icon="ADD", text="")
 
         row = layout.row()
         row.prop(props, "topic_description", text="")