Support adding a new IfcProjectLibrary from UI

Example - https://imgur.com/a/NUQkvHf

src/bonsai/bonsai/bim/module/project/__init__.py

@@ -20,6 +20,7 @@ import bpy
 from . import ui, prop, operator, workspace, gizmo, decorator
 
 classes = (
+    operator.AddProjectLibrary,
     operator.AppendEntireLibrary,
     operator.AppendInspectedLinkedElement,
     operator.AppendLibraryElement,

src/bonsai/bonsai/bim/module/project/data.py

@@ -138,9 +138,12 @@ class ProjectLibraryData:
             ("-", "No Library", "Show elements without library assigned", "", 1),
         ]
         props = tool.Project.get_project_props()
+        libs = []
         for i, data in enumerate(cls.data["project_libraries"].values(), len(results)):
             icon = "GREASEPENCIL" if props.editing_project_library_id == data["id"] else ""
-            results.append((str(data["id"]), data["Name"] or "", data["Description"] or "", icon, i))
+            libs.append((str(data["id"]), data["Name"] or "Unnamed", data["Description"] or "", icon, i))
+        libs.sort(key=lambda x: x[1])
+        results += libs
         return results
 
 

src/bonsai/bonsai/bim/module/project/operator.py

@@ -30,6 +30,7 @@ import numpy as np
 import ifcopenshell
 import ifcopenshell.api
 import ifcopenshell.api.project
+import ifcopenshell.api.root
 import ifcopenshell.geom
 import ifcopenshell.ifcopenshell_wrapper as W
 import ifcopenshell.util.file
@@ -55,7 +56,7 @@ from collections import defaultdict
 from mathutils import Vector, Matrix
 from bpy.app.handlers import persistent
 from ifcopenshell.geom import ShapeElementType
-from bonsai.bim.module.project.data import LinksData
+from bonsai.bim.module.project.data import LinksData, ProjectLibraryData
 from bonsai.bim.module.project.decorator import ProjectDecorator, ClippingPlaneDecorator, MeasureDecorator
 from bonsai.bim.module.model.decorator import PolylineDecorator
 from bonsai.bim.module.model.polyline import PolylineOperator
@@ -639,6 +640,42 @@ class EditProjectLibrary(bpy.types.Operator):
         IfcStore.library_file.redo()
 
 
+class AddProjectLibrary(bpy.types.Operator):
+    bl_idname = "bim.add_project_library"
+    bl_label = "Add Project Library"
+    bl_description = "Add new IfcProjectLibrary to the currently selected library."
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        IfcStore.begin_transaction(self)
+        library_file = IfcStore.library_file
+        assert library_file
+        library_file.begin_transaction()
+        result = self._execute(context)
+        library_file.end_transaction()
+        IfcStore.add_transaction_operation(self)
+        IfcStore.end_transaction(self)
+        return result
+
+    def _execute(self, context):
+        props = tool.Project.get_project_props()
+        library_file = IfcStore.library_file
+        assert library_file
+        project = library_file.by_type("IfcProject")[0]
+        project_library = ifcopenshell.api.root.create_entity(library_file, "IfcProjectLibrary")
+        ifcopenshell.api.project.assign_declaration(library_file, [project_library], project)
+        ProjectLibraryData.load()  # Update enum.
+        props.selected_project_library = str(project_library.id())
+        props.is_editing_project_library = True
+        return {"FINISHED"}
+
+    def rollback(self, data):
+        IfcStore.library_file.undo()
+
+    def commit(self, data):
+        IfcStore.library_file.redo()
+
+
 class EnableEditingHeader(bpy.types.Operator):
     bl_idname = "bim.enable_editing_header"
     bl_label = "Enable Editing Header"

src/bonsai/bonsai/bim/module/project/ui.py

@@ -366,15 +366,16 @@ class BIM_PT_project_library(Panel):
         layout = self.layout
         props = self.props
 
-        if not self.props.library_elements:
-            row = self.layout.row()
-            row.label(text="No Assets Found", icon="ERROR")
-            return
-
+        library_file = IfcStore.library_file
+        assert library_file
         library_is_selected = props.selected_project_library not in ("*", "-")
+
         row = layout.row(align=True)
         row.prop(self.props, "selected_project_library", text="")
 
+        if library_file.schema != "IFC2X3":
+            row.operator("bim.add_project_library", text="", icon="ADD")
+
         if library_is_selected and not props.is_editing_project_library:
             row.prop(props, "is_editing_project_library", text="", icon="GREASEPENCIL")
 
@@ -387,6 +388,11 @@ class BIM_PT_project_library(Panel):
             draw_attributes(props.project_library_attributes, layout)
             layout.separator()
 
+        if not self.props.library_elements:
+            row = self.layout.row()
+            row.label(text="No Assets Found", icon="ERROR")
+            return
+
         row = self.layout.row(align=True)
         row.label(text=self.props.active_library_element or "Top Level Assets")
         if self.props.active_library_element:

src/bonsai/bonsai/tool/project.py

@@ -332,7 +332,9 @@ class Project(bonsai.core.tool.Project):
             else:
 
                 def condition(elements: list[ifcopenshell.entity_instance]):
-                    pass
+                    # Hacky way to create empty generator.
+                    return
+                    yield
 
         return condition