redwood-lazylayout-compose/app.cash.redwood.lazylayout.compose/LoadingStrategy

LoadingStrategy

interface LoadingStrategy

Inheritors

Properties

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abstract val firstVisibleIndex: Int

Returns the index of the first item that is visible on screen. The item may be partially visible.

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abstract val lastVisibleIndex: Int

Returns the index of the last item that is visible on screen. The item may be partially visible.

Functions

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abstract fun loadRange(itemCount: Int): IntRange

Returns the range of items to render into the view tree. This should be a slice of 0..(itemCount - 1). It should cover the most-recently scrolled to firstIndex..lastIndex range, plus any adjacent indexes to preload.

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abstract fun onUserScroll(firstVisibleIndex: Int, lastVisibleIndex: Int)

React to a user-initiated scroll to the target range.

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abstract fun scrollTo(firstVisibleIndex: Int)

Perform a programmatic scroll to firstVisibleIndex.