You can now load and browse a tree of project library types products

src/blenderbim/blenderbim/bim/ifc.py

@@ -12,6 +12,8 @@ class IfcStore:
     edited_objs = set()
     pset_template_path = ""
     pset_template_file = None
+    library_path = ""
+    library_file = None
 
     @staticmethod
     def get_file():

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

@@ -5,8 +5,15 @@ classes = (
     operator.CreateProject,
     operator.CreateProjectLibrary,
     operator.ValidateIfcFile,
+    operator.SelectLibraryFile,
+    operator.ChangeLibraryElement,
+    operator.RefreshLibrary,
+    operator.RewindLibrary,
+    prop.LibraryElement,
     prop.BIMProjectProperties,
     ui.BIM_PT_project,
+    ui.BIM_PT_project_library,
+    ui.BIM_UL_library,
 )
 
 

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

@@ -88,3 +88,86 @@ class ValidateIfcFile(bpy.types.Operator):
         logger.setLevel(logging.DEBUG)
         ifcopenshell.validate.validate(IfcStore.get_file(), logger)
         return {"FINISHED"}
+
+
+class SelectLibraryFile(bpy.types.Operator):
+    bl_idname = "bim.select_library_file"
+    bl_label = "Select Library File"
+    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    filter_glob: bpy.props.StringProperty(default="*.ifc;*.ifczip;*.ifcxml", options={"HIDDEN"})
+
+    def execute(self, context):
+        IfcStore.library_path = self.filepath
+        IfcStore.library_file = ifcopenshell.open(self.filepath)
+        bpy.ops.bim.refresh_library()
+        return {"FINISHED"}
+
+    def invoke(self, context, event):
+        context.window_manager.fileselect_add(self)
+        return {"RUNNING_MODAL"}
+
+
+class RefreshLibrary(bpy.types.Operator):
+    bl_idname = "bim.refresh_library"
+    bl_label = "Refresh Library"
+
+    def execute(self, context):
+        self.props = context.scene.BIMProjectProperties
+
+        while len(self.props.library_elements) > 0:
+            self.props.library_elements.remove(0)
+
+        while len(self.props.library_breadcrumb) > 0:
+            self.props.library_breadcrumb.remove(0)
+
+        self.props.active_library_element = ""
+
+        types = IfcStore.library_file.wrapped_data.types_with_super()
+        if "IfcTypeProduct" in types:
+            new = self.props.library_elements.add()
+            new.name = "IfcTypeProduct"
+        return {"FINISHED"}
+
+
+class ChangeLibraryElement(bpy.types.Operator):
+    bl_idname = "bim.change_library_element"
+    bl_label = "Change Library Element"
+    element_name: bpy.props.StringProperty()
+
+    def execute(self, context):
+        self.props = context.scene.BIMProjectProperties
+        ifc_classes = set()
+        self.props.active_library_element = self.element_name
+        crumb = self.props.library_breadcrumb.add()
+        crumb.name = self.element_name
+        elements = IfcStore.library_file.by_type(self.element_name)
+        [ifc_classes.add(e.is_a()) for e in elements]
+        while len(self.props.library_elements) > 0:
+            self.props.library_elements.remove(0)
+        if len(ifc_classes) == 1:
+            for element in elements:
+                new = self.props.library_elements.add()
+                new.name = element.Name or "Unnamed"
+                new.ifc_definition_id = element.id()
+        else:
+            for ifc_class in ifc_classes:
+                new = self.props.library_elements.add()
+                new.name = ifc_class
+        return {"FINISHED"}
+
+
+class RewindLibrary(bpy.types.Operator):
+    bl_idname = "bim.rewind_library"
+    bl_label = "Rewind Library"
+
+    def execute(self, context):
+        self.props = context.scene.BIMProjectProperties
+        total_breadcrumbs = len(self.props.library_breadcrumb)
+        if total_breadcrumbs < 2:
+            bpy.ops.bim.refresh_library()
+            return {"FINISHED"}
+        element_name = self.props.library_breadcrumb[total_breadcrumbs - 2].name
+        self.props.library_breadcrumb.remove(total_breadcrumbs - 1)
+        self.props.library_breadcrumb.remove(total_breadcrumbs - 2)
+        bpy.ops.bim.change_library_element(element_name = element_name)
+        return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/project/prop.py

@@ -1,4 +1,5 @@
 import bpy
+from blenderbim.bim.prop import StrProperty
 from bpy.types import PropertyGroup
 from bpy.props import (
     PointerProperty,
@@ -12,5 +13,14 @@ from bpy.props import (
 )
 
 
+class LibraryElement(PropertyGroup):
+    name: StringProperty(name="Name")
+    ifc_definition_id: IntProperty(name="IFC Definition ID")
+
+
 class BIMProjectProperties(PropertyGroup):
     is_authoring: BoolProperty(name="Enable Authoring Mode", default=True)
+    active_library_element: StringProperty(name="Enable Authoring Mode", default="")
+    library_breadcrumb: CollectionProperty(name="Library Breadcrumb", type=StrProperty)
+    library_elements: CollectionProperty(name="Library Elements", type=LibraryElement)
+    active_library_element_index: IntProperty(name="Active Library Element Index")

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

@@ -1,5 +1,5 @@
 import os
-from bpy.types import Panel
+from bpy.types import Panel, UIList
 from blenderbim.bim.ifc import IfcStore
 
 
@@ -66,3 +66,50 @@ class BIM_PT_project(Panel):
         if props.export_schema != "IFC2X3":
             row = self.layout.row()
             row.operator("bim.create_project_library")
+
+
+class BIM_PT_project_library(Panel):
+    bl_label = "IFC Project Library"
+    bl_idname = "BIM_PT_project_library"
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+
+    def draw(self, context):
+        self.layout.use_property_decorate = False
+        self.layout.use_property_split = True
+        self.props = context.scene.BIMProjectProperties
+        row = self.layout.row(align=True)
+        row.label(text=IfcStore.library_path or "No Library Loaded", icon="ASSET_MANAGER")
+        row.operator("bim.select_library_file", icon="FILE_FOLDER", text="")
+        if IfcStore.library_file:
+            self.draw_library_ul()
+
+    def draw_library_ul(self):
+        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:
+            row.operator("bim.rewind_library", icon="FRAME_PREV", text="")
+        row.operator("bim.refresh_library", icon="FILE_REFRESH", text="")
+        self.layout.template_list(
+            "BIM_UL_library",
+            "",
+            self.props,
+            "library_elements",
+            self.props,
+            "active_library_element_index",
+        )
+
+
+class BIM_UL_library(UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+        if item:
+            row = layout.row(align=True)
+            if not item.ifc_definition_id:
+                op = row.operator("bim.change_library_element", text="", icon="DISCLOSURE_TRI_RIGHT", emboss=False)
+                op.element_name = item.name
+            row.label(text=item.name)