Select All button for long lists of checkboxes

Not sure about using it on permissions but in general maybe.

Currently there is https://www.drupal.org/project/multiple_select → so question is do we want to bring into core?

Personally +1 for bringing multiple_select type functionality generally into core. Basically standard UX on the web, but up to the UX team/maintainers to decide.

Helpful comments in #3 from 12 years ago

I'd be in support of expanding #type=checkboxes to allow this property, as we do with #type=tableselect.

Other than the permissions page (where I assume you would be suggesting a select all at the top of each role column, can you suggest anywhere else in Core that you think this would be appropriate?

I don't personally think that this is appropriate on the permissions page, how many times do you want to give a role all permissions, and how often do you do this (one per install)?

Requested since Drupal 6 :D

Here's a Drupal 8+ quickfix module, but I think we should have this as a FAPI option in core and as a field widget setting in checkboxes widgets (e.g. entity references, lists, ...)

I'm quite sure I saw an issue for that somewhere...

Okay it was an issue I created at Field tools, but @joachim also suggested solving it in core.

Let' finally close this in favour of ✨ Add a '#selectall' option for checkboxes element Active
Please contribute :)