DragTargetBuilder<T> typedef
Signature for building children of a DragTarget.
The candidateData
argument contains the list of drag data that is hovering
over this DragTarget and that has passed
DragTarget.onWillAcceptWithDetails. The rejectedData
argument contains
the list of drag data that is hovering over this DragTarget and that will
not be accepted by the DragTarget.
Used by DragTarget.builder.
Implementation
typedef DragTargetBuilder<T> = Widget Function(BuildContext context, List<T?> candidateData, List<dynamic> rejectedData);