react-native

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Nick Gerleman f44dfef923 Add proper support for fractional scrollIndex in VirtualizedList

Summary:
Non-integer `initialScrollIndex` or values to `scrollToIndex` would produce a reasonable result, with the caveat that it always falls back to layout estimation (will only be correct when all items are the same size), and breaks if getItemLayout() is supplied. It has usage though, so this diff adds proper support for non-integer scrollIndex, to offset a given amount into the length of the specific cell.

This overlaps a bit with the optional `viewOffset` and `viewPosition` arguments in `scrollToIndex`, but there isn't really the equivalent API for `initialScrollIndex`.

Changelog:
[General][Added]- Add proper support for fractional scrollIndex in VirtualizedList

Reviewed By: yungsters

Differential Revision: D39271100

fbshipit-source-id: 4d93887eed4497e9f6abcd1a6117ac7fdaebf2b1

2022-09-07 16:52:01 -07:00

__snapshots__

Back out "TalkBack support for ScrollView accessibility announcements (list and grid) - Javascript Only Changes"

2022-08-05 17:58:41 -07:00

CellRenderMask-test.js

Allow empty cell ranges in CellRenderMask.addCells()

2022-07-28 11:08:18 -07:00

FillRateHelper-test.js

Update copyright headers from Facebook to Meta

2021-12-30 15:11:21 -08:00

FlatList-test.js

Fix/flat list not calling render items for nullish values when numColumns > 1 (#34205 )