Geometry Nodes: Hide modifier sub-panels when they are empty #106804

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Dalai Felinto · 2023-04-11T14:12:07+02:00

Dalai Felinto commented

2023-04-11 14:12:07 +02:00

At the moment there is no way to have a specific poll function for the sub-panels of the Geometry Nodes modifier.

It would be good to be able to hide them if they are empty.

Developer comments by @HooglyBoogly:

The panel type poll callback currently has arguments for the context and the type:

bool (*poll)(const bContext *C, PanelType *pt);

    @classmethod
    def poll(cls, context):

However, which modifier the panel corresponds to is stored on the Panel, not its type; there can be multiple panels with the same type. In order for this poll to work, the panel needs to know its modifier.

The main options I see are giving this poll function an optional third argument, adding a new one, or just changing it (that would be a breaking API change though, which probably wouldn't be worth it.

At the moment there is no way to have a specific poll function for the sub-panels of the Geometry Nodes modifier. It would be good to be able to hide them if they are empty. ![image](/attachments/9e0933a7-e06e-49ed-896d-37a1b261b72f) --- Developer comments by @HooglyBoogly: The panel type poll callback currently has arguments for the context and the type: ```C bool (*poll)(const bContext *C, PanelType *pt); ``` ```Py @classmethod def poll(cls, context): ``` However, which modifier the panel corresponds to is stored on the `Panel`, not its type; there can be multiple panels with the same type. In order for this poll to work, the panel needs to know its modifier. The main options I see are giving this poll function an optional third argument, adding a new one, or just changing it (that would be a breaking API change though, which probably wouldn't be worth it.

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label 2023-04-11 14:12:07 +02:00

Dalai Felinto added this to the Nodes & Physics project 2023-04-11 14:12:08 +02:00

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Geometry Nodes: Hide modifier sub-panels when they are empty #106804