Limit choices for gr.Dropdown multiselect

[apolinario]

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Is your feature request related to a problem? Please describe.
I would like to limit to a certain number of choices for the multiselect option

Describe the solution you'd like
I would like to limit the user to choose only a fixed amount of options out of all, so say a maximumChoices parameter that can be set to a value and then users can only select up to that amount of options.

[apolinario]

An odd additional request:
If we implement something like a maximumChoices parameter, please have it start with 1.

It know it sounds weird and would be more logical that if multiselect == True, a maximumChoices parameter should start from >=2, but this would be a way to allow for users to use the amazing searchable UI of multiselect even if they only need 1 option selected.

An alternative is a searchable param to be set to True even if multiselect is False

[abidlabs]

Makes sense to me! cc @dawoodkhan82

[freddyaboulton]

When we implement this, I think we should just make the "regular" Dropdown an alias for multiselect with maximum_choices=1 and that way all dropdowns will be searchable.

[abidlabs]

I like that (and agree that the regular Dropdown should be searchable) but the only issue is that the Dropdown passes in the selected value as a string, whereas if multiselect=True, the selected values are always passed in as a list

[dawoodkhan82]

Makes sense. I'm sure I can make it so that the regular dropdown uses the Multiselect UI but still returns a string, so it won't be a breaking change.