SliverViewObserver constructor

const SliverViewObserver({
  1. Key? key,
  2. required Widget child,
  3. String? tag,
  4. SliverObserverController? controller,
  5. @Deprecated('It will be removed in version 2, please use [sliverContexts] instead') List<BuildContext> sliverListContexts()?,
  6. List<BuildContext> sliverContexts()?,
  7. OnObserveAllCallback<ObserveModel>? onObserveAll,
  8. OnObserveCallback<ObserveModel>? onObserve,
  9. OnObserveViewportCallback? onObserveViewport,
  10. double leadingOffset = 0,
  11. double dynamicLeadingOffset()?,
  12. double? customOverlap(
    1. BuildContext sliverContext
    )?,
  13. double toNextOverPercent = 1,
  14. ScrollNotificationPredicate? scrollNotificationPredicate,
  15. List<ObserverAutoTriggerObserveType>? autoTriggerObserveTypes,
  16. ObserverTriggerOnObserveType triggerOnObserveType = ObserverTriggerOnObserveType.displayingItemsChange,
  17. ObserveModel? customHandleObserve(
    1. BuildContext context
    )?,
  18. ObserveModel? extendedHandleObserve(
    1. BuildContext context
    )?,
})

Implementation

const SliverViewObserver({
  Key? key,
  required Widget child,
  String? tag,
  this.controller,
  @Deprecated(
      'It will be removed in version 2, please use [sliverContexts] instead')
  List<BuildContext> Function()? sliverListContexts,
  List<BuildContext> Function()? sliverContexts,
  OnObserveAllCallback<ObserveModel>? onObserveAll,
  OnObserveCallback<ObserveModel>? onObserve,
  this.onObserveViewport,
  double leadingOffset = 0,
  double Function()? dynamicLeadingOffset,
  this.customOverlap,
  double toNextOverPercent = 1,
  ScrollNotificationPredicate? scrollNotificationPredicate,
  List<ObserverAutoTriggerObserveType>? autoTriggerObserveTypes,
  ObserverTriggerOnObserveType triggerOnObserveType =
      ObserverTriggerOnObserveType.displayingItemsChange,
  ObserveModel? Function(BuildContext context)? customHandleObserve,
  this.extendedHandleObserve,
}) : super(
        key: key,
        child: child,
        tag: tag,
        sliverController: controller,
        sliverContexts: sliverContexts ?? sliverListContexts,
        onObserveAll: onObserveAll,
        onObserve: onObserve,
        leadingOffset: leadingOffset,
        dynamicLeadingOffset: dynamicLeadingOffset,
        toNextOverPercent: toNextOverPercent,
        scrollNotificationPredicate: scrollNotificationPredicate,
        autoTriggerObserveTypes: autoTriggerObserveTypes,
        triggerOnObserveType: triggerOnObserveType,
        customHandleObserve: customHandleObserve,
      );