[Mac Catalyst] Color inputs and selects fail to display popovers when clicked

[Wenson Hsieh]

<rdar://problem/64004135>

[Wenson Hsieh]

Created attachment 401828 [details]
Patch

[Tim Horton]

Comment on attachment 401828 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=401828&action=review

> Source/WebKit/ChangeLog:9
> +        In Mac Catalyst, presenting popovers using `UIPopoverController` causes the first responder to change. This

Not totally clear why presenting a popover on iOS doesn't also cause the first responder to change, but ... OK?

[Wenson Hsieh]

(In reply to Tim Horton from comment #2)
> Comment on attachment 401828 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=401828&action=review
> 
> > Source/WebKit/ChangeLog:9
> > +        In Mac Catalyst, presenting popovers using `UIPopoverController` causes the first responder to change. This
> 
> Not totally clear why presenting a popover on iOS doesn't also cause the
> first responder to change, but ... OK?

It looks like it's pretty much due to UIKit implementation details. On Mac Catalyst, _UIPopoverSceneManager is used to present popovers, which resigns first responder underneath -createPopoverSceneForContentViewController:sourceView:sourceRectInParentUIWindow:contentSize:permittedArrowDirections:showsArrow:userInterfaceStyle:withCompletionBlock:]. This codepath isn't taken on iOS and iPadOS.

[EWS]

Committed r263001: <https://trac.webkit.org/changeset/263001>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 401828 [details].