banner static method

void banner({ required String message, String? title, UToastType type = UToastType.neutral, IconData? icon, List<Widget>? actions, String? actionLabel, VoidCallback? onAction, bool showDismiss = true, String? dismissLabel, Color? backgroundColor, Color? foregroundColor, bool clearQueue = true, })

Implementation

static void banner({
  required String message,
  String? title,
  UToastType type = UToastType.neutral,
  IconData? icon,
  List<Widget>? actions,
  String? actionLabel,
  VoidCallback? onAction,
  bool showDismiss = true,
  String? dismissLabel,
  Color? backgroundColor,
  Color? foregroundColor,
  bool clearQueue = true,
}) {
  if (message.isNullOrEmpty()) return;
  final BuildContext ctx = navigatorKey.currentContext!;
  final Color background = backgroundColor ?? (type == UToastType.neutral ? _scheme.surfaceContainerHighest : _backgroundFor(type));
  final Color foreground = foregroundColor ?? (type == UToastType.neutral ? _scheme.onSurface : _foregroundFor(type));
  final IconData? resolvedIcon = icon ?? _iconFor(type);
  final ScaffoldMessengerState messenger = ScaffoldMessenger.of(ctx);
  if (clearQueue) messenger.clearMaterialBanners();

  // Ensure the banner always has at least one action (MaterialBanner requires it)
  final List<Widget> resolvedActions = actions ??
      <Widget>[
        if (actionLabel != null)
          TextButton(
            onPressed: () {
              dismissBanner();
              onAction?.call();
            },
            style: TextButton.styleFrom(foregroundColor: foreground),
            child: Text(actionLabel),
          ),
        if (showDismiss || actionLabel == null)
          TextButton(
            onPressed: dismissBanner,
            style: TextButton.styleFrom(foregroundColor: foreground),
            child: Text(dismissLabel ?? U.s.close),
          ),
      ];

  messenger.showMaterialBanner(
    MaterialBanner(
      backgroundColor: background,
      leading: resolvedIcon != null ? Icon(resolvedIcon, color: foreground) : null,
      content: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          if (title != null) UTextTitleSmall(title, color: foreground),
          UTextBodyMedium(message, color: foreground),
        ],
      ),
      actions: resolvedActions,
    ),
  );
}