SelectNearest<D> constructor

SelectNearest<D>({ SelectionModelType selectionModelType = SelectionModelType.info, SelectionMode selectionMode = SelectionMode.expandToDomain, bool selectAcrossAllSeriesRendererComponents = true, bool selectClosestSeries = true, SelectionTrigger eventTrigger = SelectionTrigger.hover, int? maximumDomainDistancePx, int? hoverEventDelay, })

Implementation

SelectNearest({
  this.selectionModelType = SelectionModelType.info,
  this.selectionMode = SelectionMode.expandToDomain,
  this.selectAcrossAllSeriesRendererComponents = true,
  this.selectClosestSeries = true,
  this.eventTrigger = SelectionTrigger.hover,
  this.maximumDomainDistancePx,
  this.hoverEventDelay,
}) {
  // Setup the appropriate gesture listening.
  switch (eventTrigger) {
    case SelectionTrigger.tap:
      _listener = GestureListener(onTapTest: _onTapTest, onTap: _onSelect);
    case SelectionTrigger.tapAndDrag:
      _listener = GestureListener(
        onTapTest: _onTapTest,
        onTap: _onSelect,
        onDragStart: _onSelect,
        onDragUpdate: _onSelect,
      );
    case SelectionTrigger.pressHold:
      _listener = GestureListener(
        onTapTest: _onTapTest,
        onLongPress: _onSelect,
        onDragStart: _onSelect,
        onDragUpdate: _onSelect,
        onDragEnd: _onDeselectAll,
      );
    case SelectionTrigger.longPressHold:
      _listener = GestureListener(
        onTapTest: _onTapTest,
        onLongPress: _onLongPressSelect,
        onDragStart: _onSelect,
        onDragUpdate: _onSelect,
        onDragEnd: _onDeselectAll,
      );
    case SelectionTrigger.hover:
    default:
      _listener = GestureListener(
        onHover: hoverEventDelay == null
            ? _onSelect
            : throttle<Point<double>, bool>(
                _onSelect,
                delay: Duration(milliseconds: hoverEventDelay!),
                defaultReturn: false,
              ),
      );
      break;
  }
}