obx method

Widget obx(
  1. NotifierBuilder<T> widget, {
  2. Widget onError(
    1. String? error
    )?,
  3. Widget? onLoading,
  4. Widget? onEmpty,
  5. WidgetBuilder? onCustom,
})

Builds a widget based on the current state.

This method provides a convenient way to build widgets based on the state's status. It takes a NotifierBuilder function as a parameter, which defines the widget to be built based on the state's value.

Implementation

Widget obx(
  NotifierBuilder<T> widget, {
  Widget Function(String? error)? onError,
  Widget? onLoading,
  Widget? onEmpty,
  WidgetBuilder? onCustom,
}) =>
    Observer(
      builder: (context) => switch (status) {
        var s when s.isLoading =>
          onLoading ?? const Center(child: CircularProgressIndicator()),
        var s when s.isError => onError != null
            ? onError(s.errorMessage)
            : Center(child: Text("An error occurred: ${s.errorMessage}")),
        var s when s.isEmpty => onEmpty ?? const SizedBox.shrink(),
        var s when s.isSuccess => widget(value),
        var s when s.isCustom =>
          onCustom?.call(context) ?? const SizedBox.shrink(),
        _ => widget(value)
      },
    );