onStateError method

bool onStateError(FlutterErrorDetails details)

Call the latest SateX object's error routine Possibly the error occurred there.

Implementation

bool onStateError(FlutterErrorDetails details) {
  //
  final state = lastState;

  // If it's this object, it will call its own later
  bool caught = state != null && state != this;

  if (caught) {
    //
    try {
      //
      final stack = details.stack?.toString();

      caught = stack != null;

      if (caught) {
        // That State object's build() function was called.
        var name = state.toString();
        name = name.substring(0, name.indexOf('#'));
        caught = stack.contains('$name.build');

        if (!caught) {
          // If it involves particular libraries
          final library = details.library;
          caught = library != null &&
              (library.contains('gesture') || library.contains('widgets'));
        }

        // Call the StateX's onError() function
        if (caught) {
          _errorStateName = name;
          state.onError(details);
        } else {
          _errorStateName = null;
        }

        // // Always test if there was an error in the error handler
        // // Include it in the error reporting as well.
        // if (hasError) {
        //   _onErrorInHandler();
        // }
      }
    } catch (e, stack) {
      // This is a public function. ALWAYS catch any error or exception
      // Throw in DebugMode.
      if (kDebugMode) {
        // Set the original error routine. Allows the handler to throw errors.
        FlutterError.onError = _prevErrorFunc;
        // Rethrow to be handled by the original routine.
        rethrow;
      } else {
        // Record the error
        recordException(e, stack);

        // Record error in device's log
        _logPackageError(
          e,
          library: 'part08_app_statex.dart',
          description: 'Error in onStateError()',
        );
      }
    }
  }
  return caught;
}