Expose a prop to allow a custom placeholder image

[jingdid]

Is your feature request related to a problem? Please describe.
Hello! Sorry to bother you again, but I would like to be able to display a custom image when the provided src url in the images array turns out to be a broken link. Right now it looks like the carousel deals with this case, but the placeholder image must be the one in the library. Since I can't provide image components directly (unless I use children which in this case, I would prefer not to), I have to defer to the carousel's custom error handling in case the url is not found, but I would like my fallback to be a bit more descriptive than the black rectangle currently provided as the library's fallback.

Describe the solution you'd like
It would be nice if there was a prop provided so that I can use a custom placeholder image.

Describe alternatives you've considered
I've looked into whether I can customize the placeholder image without requesting this feature, but ironically, because this library provides a fallback image, I can't simply add a css rule that only kicks in for broken images, and the lack of direct control over images unless I use the children prop severely limits any other options.

Additional context
Thank you!

[yifaneye]

Hi @jingdid ! Thank you for raising this issue!

That's a good idea! I will try to support a custom placeholder image.

[jingdid]

Hey! Just wanted to ask if you have any idea when this feature might get added?

[yifaneye]

Hi @jingdid ! I think I have time next month. So I think it will be available at the end of April. Feel free to make a pull request.

[jingdid]

Hi @yifaneye ! Thanks for the response! I will look into making a pull request but am not certain that I will be able to do so before next month.

[yifaneye]

You're welcome. No worries.

[jingdid]

Hey, thank you for reviewing my pull request, and apologies for not commenting sooner! I will be offline for a few weeks starting this Friday, so I probably won't be able to address most of your feedback until I get back, but I will aim to at least get started before I leave.

[yifaneye]

Hi @jingdid ! My pleasure! You did a great job! Thank you very much for your support and contribution! No worries!

[jingdid]

@yifaneye Sorry for the bother, but I've updated the pull request to hopefully address your feedback. Any thoughts on when you might be able to re-review it?