get properties, materials and other "expandable" structures about freecad-nativeifc HOT 6 CLOSED

I think the first thing to try and implement is showing attributes as it's the easiest. Create a panel that is able to lazyload attributes and refresh after operations have been performed.

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In FreeCAD we don't have as much control over the properties panel of objects. It can only display object properties. So basically there is no easy way to add something like an "Edit..." button there. What we could do (I'd do that for now, I think) is add a couple of right-click context-menu similar to the current "Expand children", ex: "Expand attributes", "Expand properties", etc.

We could think to something better in the future, but at least the underlying functionality will already be working.

Now, expanding attributes will begin to reveal things like owner history, IfcRel* objects, etc...

How fine / how far should this go? We could in theory show each and every IFC element there, up to the IfcCartesianPoint, with all the inbetweens (IfcRel*, etc...). How did you / do you choose in BlenderBIM?

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Side question... How do you get all possible Ifc product types from ifcopenshell?

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@Moult how would I go to get a list of sibling IFC classes, for ex:

• I have an IfcWall, I'd like to get a list of other IfcProducts
• I have an IfcBuildingStorey, I'd like to get a list of other IfcSpatialStructuralElement
  etc...

I couldn't find how to get that from ifcopenshell... Do you know if there is a way?

The idea is that it happens here: https://github.com/yorikvanhavre/FreeCAD-NativeIFC/blob/main/ifc_tools.py#L228

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schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name('IFC4')
declaration = schema.declaration_by_name('IfcWall')
print(declaration.supertype())
for subtype in declaration.supertype().subtypes():
    print(subtype.name())

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excellent! thanks!!!

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