Files
oott/frontend/lib/widgets/empty_state.dart
T
rzuastiandClaude Opus 4.8 9367c359d7 Polish frontend: design tokens, theming, AppBar titles, empty/loading states
Frontend usability and aesthetics pass across web and mobile:

- Add shared layout tokens (theme/dimens.dart: Insets + Breakpoints) and
  replace magic-number spacing and per-file breakpoint consts.
- Route both themes through buildAppTheme (theme/theme_builder.dart): explicit
  useMaterial3 and a shared branded textTheme (Barlow Condensed for
  display/headline/title styles); logo now reads its style from the theme.
- Move screen titles into the shared AppBar (route-derived) and drop the
  redundant in-body headers; upgrade Settings buttons to M3 FilledButton.
- Add reusable EmptyState and skeleton loaders; Devices empty state links to
  scanner status, notifications get filter-aware messages.
- Add a first-run welcome intro and Save-disabled helper text in Settings.
- Make device Filter/Sort adaptive: bottom sheet on phones, dialog on wide.
- Collapse the device-list filter chips and Sort/Filter buttons into one row;
  rename the home Scanners card title and align its style.

Tests: add EmptyState/skeleton widget tests and Settings first-run cases;
update tests for the FilledButton swap and relocated titles. 89 passing,
dart analyze clean.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-04 08:39:37 -04:00

52 lines
1.5 KiB
Dart

import 'package:flutter/material.dart';
import '../theme/dimens.dart';
/// A centered placeholder for "nothing here yet" situations: an icon, a short
/// message and an optional call-to-action button. Keeps empty screens
/// consistent and gives the user a next step instead of a bare line of text.
class EmptyState extends StatelessWidget {
const EmptyState({
required this.icon,
required this.message,
this.actionLabel,
this.onAction,
super.key,
});
final IconData icon;
final String message;
final String? actionLabel;
final VoidCallback? onAction;
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final hasAction = actionLabel != null && onAction != null;
return Center(
child: Padding(
padding: const EdgeInsets.all(Insets.xxl),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Icon(icon, size: 48, color: theme.colorScheme.onSurfaceVariant),
const SizedBox(height: Insets.md),
Text(
message,
textAlign: TextAlign.center,
style: theme.textTheme.bodyLarge?.copyWith(
color: theme.colorScheme.onSurfaceVariant,
),
),
if (hasAction) ...[
const SizedBox(height: Insets.lg),
OutlinedButton(onPressed: onAction, child: Text(actionLabel!)),
],
],
),
),
);
}
}