showSnackBar method

Future showSnackBar(String message, { Color? backgroundColor, Color? textColor, double? elevation, EdgeInsetsGeometry? margin, EdgeInsetsGeometry? padding, double? width, ShapeBorder? shape, SnackBarBehavior behavior = SnackBarBehavior.floating, SnackBarAction? action, Duration duration = const Duration(seconds: 4), Animation<double>? animation, VoidCallback? onVisible, bool waitDialogToPop = true, bool waitPopupRouteToPop = false, })

Implementation

Future showSnackBar(
  String message, {
  Color? backgroundColor,
  Color? textColor,
  double? elevation,
  EdgeInsetsGeometry? margin,
  EdgeInsetsGeometry? padding,
  double? width,
  ShapeBorder? shape,
  SnackBarBehavior behavior = SnackBarBehavior.floating,
  SnackBarAction? action,
  Duration duration = const Duration(seconds: 4),
  Animation<double>? animation,
  VoidCallback? onVisible,
  bool waitDialogToPop = true,
  bool waitPopupRouteToPop = false,
}) async {
  var observer = snackBarObserver;
  var showModalSheet = !waitPopupRouteToPop && observer.isPopupRoute;
  var manager = ScaffoldMessenger.maybeOf(this);
  var snackBarTheme = Theme.of(this).snackBarTheme;
  var navigator = Navigator.of(this);
  if (waitDialogToPop) await waitForDialogToClose();
  if (waitPopupRouteToPop) await waitForPopupRouteToClose();
  var context = navigator.context;
  if (showModalSheet && context.mounted) {
    var future = showModalBottomSheet(
      context: context,
      backgroundColor: Colors.transparent,
      isScrollControlled: true,
      builder: (ctx) => _Dismiss(
        duration: duration,
        child: SafeArea(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            mainAxisAlignment: MainAxisAlignment.end,
            children: [
              Card(
                color: backgroundColor ?? snackBarTheme.backgroundColor,
                shape: shape ?? snackBarTheme.shape,
                elevation: elevation,
                margin: margin ?? const EdgeInsets.all(15),
                child: InkWell(
                  onTap: () {},
                  child: Row(
                    children: [
                      Expanded(
                        child: Padding(
                          padding: padding ?? const EdgeInsets.all(15),
                          child: Text(
                            message,
                            style: snackBarTheme.contentTextStyle
                                    ?.copyWith(color: textColor) ??
                                TextStyle(color: textColor),
                            textAlign: action == null
                                ? TextAlign.center
                                : TextAlign.start,
                          ),
                        ),
                      ),
                      if (action != null)
                        TextButton(
                          style: TextButton.styleFrom(
                              foregroundColor: action.textColor ??
                                  snackBarTheme.actionTextColor),
                          onPressed: action.onPressed,
                          child: Text(action.label),
                        )
                    ],
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
    if (onVisible != null) onVisible();
    await future;
  } else {
    return manager
        ?.showSnackBar(SnackBar(
          content: Text(
            message,
            style: TextStyle(color: textColor),
            textAlign: action == null ? TextAlign.center : TextAlign.start,
          ),
          backgroundColor: backgroundColor,
          elevation: elevation,
          margin: margin,
          padding: padding,
          width: width,
          shape: shape,
          behavior: behavior,
          action: action,
          duration: duration,
          animation: animation,
          onVisible: onVisible,
        ))
        .closed;
  }
}