Add onVisible event

[nharlow89]

Another use case I came across is triggering additional logic when the component becomes visible (outside of rendering logic). Would be super convenient to add an event as a prop such as onVisible or onVisibilityChange.

[ost-ing]

+1 This would be handy indeed

[HemalR]

This would be useful.

Workaround (about to implement it) - Passing down a prop with the function to the component, which can be called onMount (or on render or whatever).

I'll see how I go and post an example here if it works.

[liao-frank]

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