VirtualizedList props

[fortmarek]

FlatList inherits all the props from VirtualizedList. There are some we already support, but not all of them. To achieve complete feature parity with FlatList, we will need to implement the remainder (except those which don't make sense for our implementation)

Props:

• [x] CellRendererComponent https://github.com/Shopify/flash-list/pull/362
• [x] ItemSeparatorComponent
• [x] ListEmptyComponent
• [x] ListItemComponent
• [x] ListFooterComponent
• [x] ListFooterComponentStyle
• [x] ListHeaderComponent
• [x] ListHeaderComponentStyle
• [x] debug - only for debugging, not necessary to implement as of now
• [x] disableVirtualization -> this does not make sense for our case. But we can add a prop disableRecycling. Both props can be used for debugging (not for production as they degrade performance). I'd be against keeping the same name as in our case, virtualization is not technically correct. But in VirtualizedList, this prop is deprecated, so I think we don't have to implement it for now at least.
• [x] extraData
• [x] getItemLayout https://github.com/Shopify/flash-list/issues/30
• [x] horizontal
• [x] initialNumToRender - this is currently covered by estimatedItemSize
• [x] initialScrollIndex
• [x] inverted
• [x] listKey Does not make sense for our use-case
• [x] keyExtractor
• [x] maxToRenderPerBatch - I believe this does not make sense for our implementation
• [ ] onEndReached we don't support distanceFromEnd
• [x] onEndReachedThreshold
• [x] onRefresh
• [ ] onScrollToIndexFailed
• [x] onViewableItemsChanged
• [x] persistentScrollbar - covered by ScrollView
• [x] progressViewOffset
• [x] refreshControl
• [x] refreshing
• [x] removeClippedSubviews - covered by ScrollView
• [ ] renderScrollComponent
• [x] viewabilityConfig
• [x] viewabilityConfigCallbackPairs
• [x] updateCellsBatchingPeriod - probably also does not make sense for our list
• [x] windowSize - we can either use this (with a different default) or let users specify renderAhead offset

Methods:

• [ ] flashScrollIndicators https://github.com/Shopify/flash-list/pull/381
• [ ] getChildContext - I don't thinks this is something worth investing our time into right now. The object returned from this method would be quite different from FlatList anyway.
• [x] getScrollableNode
• [ ] getScrollRef https://github.com/Shopify/flash-list/pull/381
• [ ] getScrollResponder https://github.com/Shopify/flash-list/pull/381
• [ ] hasMore
• [x] scrollToEnd
• [x] scrollToIndex
• [x] scrollToItem
• [x] scrollToOffset
• [x] recordInteraction
• [ ] setNativeProps https://github.com/Shopify/flash-list/pull/381

[naqvitalha]

This is great. I think we need one from ScrollView as well. We might be missing some things there too. I'd expect that list to be much shorter.

[fortmarek]

I think we need one from ScrollView as well. We might be missing some things there too.

The ScrollView props should just work (although we should double-check the whole list).

Afaict, we are only missing one ScrollView method which is scrollTo

[naqvitalha]

There are some around sticky headers which won't work. We can just filter them out for now. Some can be easily implemented in the future so it would be nice to track them.