Add helpers to src/helpers/element: get_scalar_attributes (primitive
EXPRESS attributes only — entity refs / aggregates omitted), get_type
and get_container (ports of ifcopenshell.util.element), and a public
get_string_attribute for safe by-name reads.
Wire them into the properties panel:
- Attributes section shows the element's direct primitive attributes for
live entities, or cached GlobalId / Name for geometry-only elements.
- Relationships section shows the construction Type and spatial Container
by name (falling back to the class when unnamed).
- Placeholders are cleared once a project is loaded, so no mock data leaks.
Also: a deselect (click on empty space -> object_id 0) no longer resets
the panel; it keeps showing the last active object. Project reset/open
still clear it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add src/helpers/element.{h,cpp}, a schema-dispatched C++ port of
ifcopenshell.util.element.get_predefined_type: prefers the associated
type element's predefined type (IsTypedBy / IsDefinedBy), falls back to
ElementType / ProcessType when USERDEFINED, then the occurrence's own
PredefinedType / ObjectType. Attribute reads are by-name so they work
across the IfcElement / IfcType* subtypes that carry these attributes.
Wire it into the properties panel entity summary: live IFC entities show
their real predefined type; geometry-only elements (a .ifcview loaded
without its .ifc/.rdb) show "N/A". Clears the placeholder so a stale
predefined type no longer leaks once a project is loaded.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Dion Moult