Pset nominal values now show their description on right click

src/blenderbim/blenderbim/bim/helper.py

@@ -23,7 +23,7 @@ import math
 import zipfile
 import ifcopenshell
 import ifcopenshell.util.attribute
-from ifcopenshell.util.doc import get_attribute_doc, get_predefined_type_doc
+from ifcopenshell.util.doc import get_attribute_doc, get_predefined_type_doc, get_property_doc
 from mathutils import geometry
 from mathutils import Vector
 import blenderbim.tool as tool
@@ -129,7 +129,10 @@ def add_attribute_description(attribute_blender):
     if not attribute_blender.name:
         return
     version = tool.Ifc.get_schema()
-    description = get_attribute_doc(version, attribute_blender.ifc_class, attribute_blender.name)
+    try:
+        description = get_attribute_doc(version, attribute_blender.ifc_class, attribute_blender.name)
+    except RuntimeError:  # It's not an Entity Attribute. Let's try a Property Set attribute.
+        description = get_property_doc(version, attribute_blender.ifc_class, attribute_blender.name).get("description")
     if description:
         attribute_blender.description = description
 

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

@@ -128,6 +128,9 @@ class EnablePsetEditing(bpy.types.Operator):
         elif metadata.data_type == "boolean":
             metadata.bool_value = False if metadata.is_null else data[prop_template.Name]
 
+        metadata.ifc_class = pset_template.Name
+        blenderbim.bim.helper.add_attribute_description(metadata)
+
     def get_data_type(self, prop_template):
         if prop_template.TemplateType in ["Q_LENGTH", "Q_AREA", "Q_VOLUME", "Q_WEIGHT", "Q_TIME"]:
             return "float"

src/blenderbim/blenderbim/bim/operator.py

@@ -689,9 +689,9 @@ class EditBlenderCollection(bpy.types.Operator):
 class BIM_OT_show_description(bpy.types.Operator):
     bl_idname = "bim.show_description"
     bl_label = "Description"
-    ifc_class: bpy.props.StringProperty()
     attr_name: bpy.props.StringProperty()
     description: bpy.props.StringProperty()
+    url: bpy.props.StringProperty()
 
     def invoke(self, context, event):
         wm = context.window_manager
@@ -706,12 +706,9 @@ class BIM_OT_show_description(bpy.types.Operator):
         wrapper = textwrap.TextWrapper(width=80)
         for line in wrapper.wrap(self.description):
             layout.label(text=line)
-        version = tool.Ifc.get_schema()
+        if self.url:
-        doc = ifcopenshell.util.doc.get_entity_doc(version, self.ifc_class)
-        url = doc.get("spec_url")
-        if url:
             url_op = layout.operator("bim.open_webbrowser", icon="URL", text="Online IFC Documentation")
-            url_op.url = url
+            url_op.url = self.url
 
     @classmethod
     def description(cls, context, properties):

src/blenderbim/blenderbim/bim/ui.py

@@ -17,18 +17,19 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
-import bpy
 from pathlib import Path
+import bpy
+from bpy.types import Panel
+from bpy.props import StringProperty, IntProperty, BoolProperty
 from ifcopenshell.util.doc import (
     get_entity_doc,
     get_property_set_doc,
     get_type_doc,
 )
 from . import ifc
-from bpy.types import Panel
-from bpy.props import StringProperty, IntProperty, BoolProperty
-from blenderbim.bim.helper import IfcHeaderExtractor
 import blenderbim.tool as tool
+from blenderbim.bim.helper import IfcHeaderExtractor
+from blenderbim.bim.prop import Attribute
 
 
 class IFCFileSelector:
@@ -402,39 +403,44 @@ def draw_custom_context_menu(self, context):
     if prop_value is None:
         return
     version = tool.Ifc.get_schema()
+    layout = self.layout
 
-    docs = {}
+    if isinstance(context.button_pointer, Attribute):
-    try:
+        print(prop, prop_name, prop_value)
-        docs = get_entity_doc(version, prop_value)
+        description = getattr(context.button_pointer, "description", None)
-        if docs is None:
+        ifc_class = getattr(context.button_pointer, "ifc_class", "")
-            raise RuntimeError
+        if ifc_class:
-    except RuntimeError:
+            try:
+                url = get_entity_doc(version, context.button_pointer.ifc_class).get("spec_url", "")
+            except RuntimeError:  # It's not an Entity Attribute. Let's try a Property Set attribute.
+                url = get_property_set_doc(version, context.button_pointer.ifc_class).get("spec_url", "")
+        if description:
+            layout.separator()
+            op_description = layout.operator("bim.show_description", text="IFC Description", icon="INFO")
+            op_description.attr_name = getattr(context.button_pointer, "name", "")
+            op_description.description = description
+            op_description.url = url
+    else:
+        # Ugly but we can't know which type of data is under the cursor so we test everything until it clicks
         try:
-            docs = get_type_doc(version, prop_value)
+            docs = get_entity_doc(version, prop_value)
             if docs is None:
                 raise RuntimeError
-        except RuntimeError:
+        except (RuntimeError, AttributeError):
             try:
-                docs = get_property_set_doc(version, prop_value)
+                docs = get_type_doc(version, prop_value)
                 if docs is None:
                     raise RuntimeError
-            except RuntimeError:
+            except (RuntimeError, AttributeError):
-                pass
+                try:
-    if docs:
+                    docs = get_property_set_doc(version, prop_value)
-        url = docs.get("spec_url", "")
+                    if docs is None:
-    else:
+                        raise RuntimeError
-        url = ""
+                except (RuntimeError, AttributeError):
-
+                    pass
-    description = getattr(context.button_pointer, "description", None)
+        if docs:
-    if not url and not description:
+            url = docs.get("spec_url", "")
-        return
+            if url:
-    layout = self.layout
+                layout.separator()
-    layout.separator()
+                url_op = layout.operator("bim.open_webbrowser", icon="URL", text="Online IFC Documentation")
-    if url:
+                url_op.url = url
-        url_op = layout.operator("bim.open_webbrowser", icon="URL", text="Online IFC Documentation")
-        url_op.url = url
-    if description:
-        op_description = layout.operator("bim.show_description", text="IFC Description", icon="INFO")
-        op_description.description = description
-        op_description.ifc_class = getattr(context.button_pointer, "ifc_class", "")
-        op_description.attr_name = getattr(context.button_pointer, "name", "")