Add dragUpdate that receives the current drag position in ReorderableListView #139187
Description
Is there an existing issue for this?
- I have searched the existing issues
- I have read the guide to filing a bug
Use case
i'm going to scroll the outer scroll with that drag update.
Proposal
As the title suggests, a drag update listener is needed in addition to drag end and drag start.
final void Function(Offset, Offset)? onReorderUpdate;
void _dragUpdate(_DragInfo item, Offset position, Offset delta) {
setState(() {
_overlayEntry?.markNeedsBuild();
/* Added */
widget.onReorderUpdate?.call(position, delta);
_dragUpdateItems();
_autoScroller?.startAutoScrollIfNecessary(_dragTargetRect);
});
}