getDisplayedPositionFromList method
int?
getDisplayedPositionFromList(
)
Implementation
int? getDisplayedPositionFromList() {
final value = itemPositionsListener.itemPositions.value;
if (value.length < 1) {
return null;
}
final orderedListByPositionIndex = value.toList()
..sort((a, b) => a.index.compareTo(b.index));
final renderedMostTopItem = orderedListByPositionIndex.first;
if (renderedMostTopItem.getBottomOffset(_currentPositionedListSize) <
widget.earlyChangePositionOffset) {
if (orderedListByPositionIndex.length > 1) {
return orderedListByPositionIndex[1].index;
}
}
return renderedMostTopItem.index;
}