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Fixes #152: create a voidcallback when user stops dragging #155

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Fixes #152: create a voidcallback when user stops dragging #155

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5 changes: 5 additions & 0 deletions lib/src/numberpicker.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,9 @@ class NumberPicker extends StatefulWidget {
/// Called when selected value changes
final ValueChanged<int> onChanged;

/// Called when user stops dragging
final VoidCallback? onStop;

/// Specifies how many items should be shown - defaults to 3
final int itemCount;

Expand Down Expand Up @@ -62,6 +65,7 @@ class NumberPicker extends StatefulWidget {
required this.maxValue,
required this.value,
required this.onChanged,
this.onStop,
this.itemCount = 3,
this.step = 1,
this.itemHeight = 50,
Expand Down Expand Up @@ -158,6 +162,7 @@ class _NumberPickerState extends State<NumberPicker> {
child: NotificationListener<ScrollEndNotification>(
onNotification: (not) {
if (not.dragDetails?.primaryVelocity == 0) {
widget.onStop?.call();
Future.microtask(() => _maybeCenterValue());
}
return true;
Expand Down