[Table] Do we need loading states on ghost header cells?

[cmslewis]

Bug report

• Package version(s): v1.20.0

Steps to reproduce

1. Enable loading for column header cells.

Actual behavior

Ghost header cells have loading bars.

Expected behavior

Maybe don't have loading bars on ghost cells?

[cmslewis]

// CC @tgreenwatts

[llorca]

Why wouldn't you? Loading bars are helpful anywhere data can be loaded, which applies to both body cells and column headers. We also do it for rows because we can't know for sure the number of rows before loading

[cmslewis]

@llorca Ah yeah, makes sense if the table dimensions aren't known yet. I'll close.

[tgreenwatts]

Wait but what if we do know the number of columns already? Doesn't this example show that we know how many columns we have, so we shouldn't pretend we're going to load other columns?

[llorca]

You might know the number of columns while not knowing the content of those columns, in which case you'll still need a loading state

[tgreenwatts]

Cool clarified offline
If you know the number of columns, only show loading state for the columns you know are going to load