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ID property's id_type enum is missing the SCREEN type #115151

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opened 2023-11-19 22:01:37 +01:00 by dima glib · 4 comments
dima glib commented 2023-11-19 22:01:37 +01:00
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Broken: 4.0, 4.1 alpha
Worked: never

Short description of error
In Blender 4.0, UI support for IDBlock-referencing custom properties was introduced. In the corresponding popup dialog, there is the "ID Type" selector that determines the specific IDBlock type which can be used as the property's value. The corresponding enum seems to include options for all IDBlock types (even for Grease Pencil v3, which is not shipped in Blender 4.0), except for the Screen type.
However, Screen objects can still be assigned to custom properties via scripting, and trying to open the pop-up for such a property results in a crash.

image

Exact steps for others to reproduce the error

  • Open attached .blend file (the object "Cube" has a custom property of IDBlock of type Screen set with C.object["s"] = D.screens[0])
  • Try edit the custom property through the UI
**Blender Version** Broken: 4.0, 4.1 alpha Worked: never **Short description of error** In Blender 4.0, UI support for IDBlock-referencing custom properties was introduced. In the corresponding popup dialog, there is the "ID Type" selector that determines the specific IDBlock type which can be used as the property's value. The corresponding enum seems to include options for all IDBlock types (even for Grease Pencil v3, which is not shipped in Blender 4.0), except for the Screen type. However, Screen objects can still be assigned to custom properties via scripting, and trying to open the pop-up for such a property results in a crash. ![image](/attachments/3d3e0ff7-60c2-423e-981d-eb3361a16569) **Exact steps for others to reproduce the error** - Open attached .blend file (the object "Cube" has a custom property of IDBlock of type Screen set with `C.object["s"] = D.screens[0]`) - Try edit the custom property through the UI
image.png
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id_type_bug_screen.blend
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dima glib added the
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Germano Cavalcante commented 2023-11-20 23:21:00 +01:00
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Thank you for the report, @dairin0d.

I can notice that not all IDs were put into the enum. (Whether it is intentional or an accident, I still need to check).
https://projects.blender.org/blender/blender/src/branch/main/source/blender/makesrna/intern/rna_ID.cc#L35-L75

But the crash really isn't ideal. So confirming the bug.

@mont29 ^

Thank you for the report, @dairin0d. I can notice that not all IDs were put into the enum. (Whether it is intentional or an accident, I still need to check). https://projects.blender.org/blender/blender/src/branch/main/source/blender/makesrna/intern/rna_ID.cc#L35-L75 But the crash really isn't ideal. So confirming the bug. @mont29 ^
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Bastien Montagne commented 2023-11-21 14:16:38 +01:00
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@mano-wii DId you find where that omission in rna_enum_id_type_items comes from?

In any case, this is a good test-case for forward-compatibility, when we introduce new ID types in the future ;)

@mano-wii DId you find where that omission in `rna_enum_id_type_items` comes from? In any case, this is a good test-case for forward-compatibility, when we introduce new ID types in the future ;)
Germano Cavalcante commented 2023-11-21 16:28:54 +01:00
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It was removed in 2e635b6500
I noticed that the screen icon started to be used for the workspace ID.

@brecht, do you remember why ID Screen was removed from the rna enum?

It was removed in 2e635b6500 I noticed that the screen icon started to be used for the workspace ID. @brecht, do you remember why ID Screen was removed from the rna enum?
Bastien Montagne commented 2023-11-21 18:17:44 +01:00
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Talked with Brecht, this was likely an 'optimistic' change during 2.8 dev when Screen id type was expected to be fully removed and replaced by workspaces.

Will add it back for the time being, we should not have ID types accessible to users/scripters that are not listed in the IDTypes enum.

Will also add some new id_type member to RNA ID struct, which returns the ID identifier as listed in rna_enum_id_type_items, and some python testing to ensure there is no ID exposed in bpy.data that cannot be properly 'typed' from rna_enum_id_type_items enum.

Talked with Brecht, this was likely an 'optimistic' change during 2.8 dev when `Screen` id type was expected to be fully removed and replaced by workspaces. Will add it back for the time being, we should not have ID types accessible to users/scripters that are not listed in the IDTypes enum. Will also add some new `id_type` member to RNA ID struct, which returns the ID identifier as listed in `rna_enum_id_type_items`, and some python testing to ensure there is no ID exposed in `bpy.data` that cannot be properly 'typed' from `rna_enum_id_type_items` enum.
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