setPageName method

void setPageName(BuildContext context, String pageName)

Implementation

void setPageName(
  BuildContext context,
  String pageName,
) {
  final pageSettings = ModalRoute.of(context)?.settings;

  assert(() {
    if (pageSettings == null) {
      throw FlutterError('Given context has no route');
    }
    return true;
  }());

  assert(() {
    if (pageSettings is! UpdatablePageNameMixin) {
      throw FlutterError(
          'Route of this context is not of type AsyncPageNameMixin. '
          'You cannot set page name of such page.'
          ' Add the AsyncPageNameMixing to the page.');
    }
    return true;
  }());

  if ((pageSettings as UpdatablePageNameMixin)._pageNameNotifier.value !=
      pageName) {
    WidgetsBinding.instance.addPostFrameCallback((_) {
      pageSettings._pageNameNotifier.value = pageName;
    });
  }
}