Modal - Allow styling of Backdrop

[alexandertrefz]

Describe the solution you'd like
I would like to lock the modal in place if a request is sent from it (If it is a confirmation for a CRUD API basically) while that request is in flight.
I can disable the cancel button and turn the confirm button to loading but the modal stays dismissible via the backdrop.

Additionally it would also be great if we could pass attributes (or just the className, really) to the backdrop, so we could style it. (I would like to slightly blur it, for example)

[blvdmitry]

overlay classname: 👍

As for locking the dismissible action – won't it work already with the way Modal is set up? Since it's completely controlled – you're passing its onClose handler that controls when it gets closed. Is there something that prevents you from removing that handler by default and only change the modal state once the request was completed?

[alexandertrefz]

Apologies! In my testing of various things I must have forgotten to remove the onClose handler. That works just like I was imagining. A slightly more explicit description of this in the Documentation might be helpful.

[blvdmitry]

<Modal overlayClassName={...} /> should be available in 2.10.9. Documentation deployment will follow in the upcoming minor release 🔥