feat: Add aggregate visibility state changed callback #1385
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To fix #1343, I believe a new callback that reports the latest visibility state(s) for that
EpoxyVisibilityItemshould be introduced. Without this aggregate information, client will need to somehow batch theVisibilityStateby themselves for 1vi.updatecycle. To avoid object allocation, instead of usingdata class AggregateVisibilityStateI just expose the properties fromEpoxyVisibilityItemas read-only.Alternatively to fix #1343, we could change the ordering of
VisibilityStateemission ononVisibilityStateChanged. Please let me know if that's preferred.Test
I have included comparing the aggregate visibility state in
EpoxyVisibilityStateTrackerTest.