PiliPlus/lib/common/widgets/spring_physics.dart

import 'package:PiliPlus/common/widgets/refresh_indicator.dart';
import 'package:PiliPlus/utils/storage.dart';
import 'package:flutter/material.dart';

Widget videoTabBarView({
  required List<Widget> children,
  TabController? controller,
}) =>
    TabBarView(
      physics: const CustomTabBarViewClampingScrollPhysics(),
      controller: controller,
      children: children,
    );

Widget tabBarView({
  required List<Widget> children,
  TabController? controller,
}) =>
    TabBarView(
      physics: const CustomTabBarViewScrollPhysics(),
      controller: controller,
      children: children,
    );

class CustomTabBarViewScrollPhysics extends ScrollPhysics {
  const CustomTabBarViewScrollPhysics({super.parent});

  @override
  CustomTabBarViewScrollPhysics applyTo(ScrollPhysics? ancestor) {
    return CustomTabBarViewScrollPhysics(parent: buildParent(ancestor));
  }

  @override
  SpringDescription get spring => SpringDescription(
        mass: GStorage.springDescription[0],
        stiffness: GStorage.springDescription[1],
        damping: GStorage.springDescription[2],
      );
}

class CustomTabBarViewClampingScrollPhysics extends ClampingScrollPhysics {
  const CustomTabBarViewClampingScrollPhysics({super.parent});

  @override
  CustomTabBarViewClampingScrollPhysics applyTo(ScrollPhysics? ancestor) {
    return CustomTabBarViewClampingScrollPhysics(parent: buildParent(ancestor));
  }

  @override
  SpringDescription get spring => SpringDescription(
        mass: GStorage.springDescription[0],
        stiffness: GStorage.springDescription[1],
        damping: GStorage.springDescription[2],
      );
}

class CustomScrollPosition extends ScrollPositionWithSingleContext {
  CustomScrollPosition({
    required super.physics,
    required super.context,
    required this.onCancelDrag,
  });

  final ValueChanged<double> onCancelDrag;

  @override
  void applyUserOffset(double delta) {
    if (isRefreshing && delta < 0) {
      onCancelDrag(delta);
      return;
    }
    super.applyUserOffset(delta);
  }
}

class CustomScrollController extends ScrollController {
  CustomScrollController(this.onCancelDrag);

  final ValueChanged<double> onCancelDrag;

  @override
  CustomScrollPosition createScrollPosition(
    ScrollPhysics physics,
    ScrollContext context,
    ScrollPosition? oldPosition,
  ) {
    return CustomScrollPosition(
      physics: physics.applyTo(const AlwaysScrollableScrollPhysics()),
      context: context,
      onCancelDrag: onCancelDrag,
    );
  }
}