INNER CODE UNIT · Dart

add

felangel/flow_builder · lib/flow_builder.dart:348

  static void add(ValueGetter<Future<bool>> interceptor) {
    _interceptors.addFirst(interceptor);
    SystemChannels.navigation.setMethodCallHandler(_handleSystemNavigation);
  }

  static void remove(ValueGetter<Future<bool>> interceptor) {
    _interceptors.remove(interceptor);
  }

  static Future<dynamic> _handleSystemNavigation(MethodCall methodCall) {
    switch (methodCall.method) {
      case 'popRoute':
        return _popRoute();
      case 'pushRoute':
        return _pushRoute(methodCall.arguments);
      default:
        return Future<dynamic>.value();
    }

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