buildScrollbar method Null safety

  1. @override
Widget buildScrollbar(
  1. BuildContext context,
  2. Widget child,
  3. ScrollableDetails details
)
override

Applies a RawScrollbar to the child widget on desktop platforms.

Implementation

@override
Widget buildScrollbar(BuildContext context, Widget child, ScrollableDetails details) {
  // When modifying this function, consider modifying the implementation in
  // the base class as well.
  switch (axisDirectionToAxis(details.direction)) {
    case Axis.horizontal:
      return child;
    case Axis.vertical:
      switch (getPlatform(context)) {
        case TargetPlatform.linux:
        case TargetPlatform.macOS:
        case TargetPlatform.windows:
          return Scrollbar(
            controller: details.controller,
            child: child,
          );
        case TargetPlatform.android:
        case TargetPlatform.fuchsia:
        case TargetPlatform.iOS:
          return child;
      }
  }
}