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[bugfix] fix RangeError when _sortedElements is empty #164

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merged 1 commit into from
Apr 9, 2023
Merged

[bugfix] fix RangeError when _sortedElements is empty #164

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4 changes: 4 additions & 0 deletions lib/grouped_list.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -378,6 +378,10 @@ class _GroupedListViewState<T, E> extends State<GroupedListView<T, E>> {
/// is not required since the group headers are displayed inside the lists and
/// do not need to be always in the visible frame.
void _scrollListener() {
if (_sortedElements.isEmpty) {
return;
}

_listBox ??= _key.currentContext?.findRenderObject() as RenderBox?;
var listPos = _listBox?.localToGlobal(Offset.zero).dy ?? 0;
_headerBox ??=
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