meshcore-open/lib/screens/usb_screen.dart
2026-03-05 02:25:05 -05:00

447 lines
15 KiB
Dart

import 'dart:async';
import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../connector/meshcore_connector.dart';
import '../l10n/l10n.dart';
import '../utils/usb_port_labels.dart';
import 'contacts_screen.dart';
class UsbScreen extends StatefulWidget {
const UsbScreen({super.key});
@override
State<UsbScreen> createState() => _UsbScreenState();
}
class _UsbScreenState extends State<UsbScreen> {
final List<String> _ports = <String>[];
bool _isLoadingPorts = true;
bool _isConnecting = false;
bool _navigatedToContacts = false;
String? _selectedPort;
String? _errorText;
late final MeshCoreConnector _connector;
late final VoidCallback _connectionListener;
@override
void initState() {
super.initState();
_connector = context.read<MeshCoreConnector>();
_connectionListener = () {
if (!mounted) return;
final activeUsbPort = _connector.activeUsbPort;
if (activeUsbPort != null &&
activeUsbPort.isNotEmpty &&
activeUsbPort != _selectedPort) {
setState(() {
_selectedPort = activeUsbPort;
});
}
if (_connector.state == MeshCoreConnectionState.disconnected) {
_navigatedToContacts = false;
if (_isConnecting) {
setState(() {
_isConnecting = false;
});
}
}
if (_connector.state == MeshCoreConnectionState.connected &&
_connector.isUsbTransportConnected &&
!_navigatedToContacts) {
_navigatedToContacts = true;
Navigator.of(context).pushReplacement(
MaterialPageRoute(builder: (_) => const ContactsScreen()),
);
}
};
_connector.addListener(_connectionListener);
unawaited(_loadPorts());
}
@override
void dispose() {
_connector.removeListener(_connectionListener);
super.dispose();
}
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final l10n = context.l10n;
return Scaffold(
appBar: AppBar(
leading: IconButton(
icon: const Icon(Icons.arrow_back),
onPressed: () {
debugPrint('UsbScreen: back button pressed');
Navigator.of(context).maybePop();
},
),
title: Text(
l10n.connectionChoiceUsbLabel,
style: theme.textTheme.titleLarge,
),
centerTitle: true,
),
body: SafeArea(
child: LayoutBuilder(
builder: (context, constraints) {
final availableHeight = constraints.maxHeight.isFinite
? constraints.maxHeight
: 600.0;
final availableWidth = constraints.maxWidth.isFinite
? constraints.maxWidth
: 800.0;
final gap = math.max(8.0, math.min(16.0, availableHeight * 0.025));
final iconSize = math.max(
28.0,
math.min(72.0, availableHeight * 0.12),
);
final isNarrow = availableWidth < 460.0;
return Padding(
padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 20),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Flexible(
flex: 3,
child: Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Icon(
Icons.usb,
size: iconSize,
color: theme.colorScheme.primary,
),
SizedBox(height: gap),
Flexible(
child: FittedBox(
fit: BoxFit.scaleDown,
child: Text(
l10n.usbScreenTitle,
textAlign: TextAlign.center,
style: theme.textTheme.headlineSmall?.copyWith(
fontWeight: FontWeight.w600,
),
),
),
),
SizedBox(height: math.max(4.0, gap * 0.5)),
Flexible(
child: FittedBox(
fit: BoxFit.scaleDown,
child: Text(
l10n.usbScreenSubtitle,
textAlign: TextAlign.center,
style: theme.textTheme.bodyMedium?.copyWith(
color: theme.colorScheme.onSurfaceVariant,
),
),
),
),
SizedBox(height: gap),
FittedBox(
fit: BoxFit.scaleDown,
child: Chip(
label: Text(
_selectedPort == null
? l10n.usbScreenStatus
: _friendlyPortName(_selectedPort!),
overflow: TextOverflow.ellipsis,
),
backgroundColor:
theme.colorScheme.surfaceContainerHighest,
),
),
],
),
),
),
SizedBox(height: gap),
Expanded(child: _buildPortList(context)),
if (_errorText != null) ...[
SizedBox(height: gap),
Flexible(
child: FittedBox(
fit: BoxFit.scaleDown,
child: Text(
_errorText!,
textAlign: TextAlign.center,
style: theme.textTheme.bodySmall?.copyWith(
color: theme.colorScheme.error,
),
),
),
),
],
SizedBox(height: gap),
if (isNarrow)
Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
OutlinedButton.icon(
onPressed: _isLoadingPorts || _isConnecting
? null
: () {
debugPrint(
'UsbScreen: refresh ports pressed',
);
_loadPorts();
},
icon: const Icon(Icons.refresh),
label: Text(l10n.repeater_refresh),
),
SizedBox(height: gap),
FilledButton.icon(
onPressed: _canConnect
? () {
final rawPortName = normalizeUsbPortName(
_selectedPort!,
);
debugPrint(
'UsbScreen: connect pressed for $_selectedPort (raw: $rawPortName)',
);
_connectSelectedPort();
}
: null,
icon: _isConnecting
? const SizedBox(
width: 18,
height: 18,
child: CircularProgressIndicator(
strokeWidth: 2,
),
)
: const Icon(Icons.usb),
label: Text(l10n.common_connect),
),
],
)
else
Row(
children: [
Expanded(
child: OutlinedButton.icon(
onPressed: _isLoadingPorts || _isConnecting
? null
: () {
debugPrint(
'UsbScreen: refresh ports pressed',
);
_loadPorts();
},
icon: const Icon(Icons.refresh),
label: Text(l10n.repeater_refresh),
),
),
SizedBox(width: gap),
Expanded(
child: FilledButton.icon(
onPressed: _canConnect
? () {
final rawPortName = normalizeUsbPortName(
_selectedPort!,
);
debugPrint(
'UsbScreen: connect pressed for $_selectedPort (raw: $rawPortName)',
);
_connectSelectedPort();
}
: null,
icon: _isConnecting
? const SizedBox(
width: 18,
height: 18,
child: CircularProgressIndicator(
strokeWidth: 2,
),
)
: const Icon(Icons.usb),
label: Text(l10n.common_connect),
),
),
],
),
SizedBox(height: math.max(4.0, gap * 0.75)),
Flexible(
child: FittedBox(
fit: BoxFit.scaleDown,
child: Text(
l10n.usbScreenNote,
textAlign: TextAlign.center,
style: theme.textTheme.bodySmall?.copyWith(
color: theme.colorScheme.onSurfaceVariant,
),
),
),
),
],
),
);
},
),
),
);
}
bool get _canConnect =>
!_isLoadingPorts &&
!_isConnecting &&
_selectedPort != null &&
_selectedPort!.isNotEmpty;
Widget _buildPortList(BuildContext context) {
final theme = Theme.of(context);
final l10n = context.l10n;
if (_isLoadingPorts) {
return Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
const CircularProgressIndicator(),
const SizedBox(height: 12),
Text(l10n.common_loading),
],
),
);
}
if (_ports.isEmpty) {
return Center(
child: Text(
l10n.usbScreenEmptyState,
textAlign: TextAlign.center,
style: theme.textTheme.bodyMedium?.copyWith(
color: theme.colorScheme.onSurfaceVariant,
),
),
);
}
return ListView.separated(
itemCount: _ports.length,
itemBuilder: (context, index) {
final port = _ports[index];
final isSelected = port == _selectedPort;
final displayName = _friendlyPortName(port);
final rawName = normalizeUsbPortName(port);
final showRawName = rawName != displayName;
return Material(
color: isSelected
? theme.colorScheme.primaryContainer
: theme.colorScheme.surfaceContainerLow,
borderRadius: BorderRadius.circular(16),
child: ListTile(
onTap: _isConnecting
? null
: () {
setState(() {
_selectedPort = port;
_errorText = null;
});
debugPrint('UsbScreen: selected port $port');
},
leading: Icon(
Icons.usb,
color: isSelected
? theme.colorScheme.onPrimaryContainer
: theme.colorScheme.onSurfaceVariant,
),
title: Text(
displayName,
maxLines: 1,
overflow: TextOverflow.ellipsis,
style: theme.textTheme.titleMedium?.copyWith(
color: isSelected ? theme.colorScheme.onPrimaryContainer : null,
),
),
subtitle: showRawName
? Text(
rawName,
maxLines: 1,
overflow: TextOverflow.ellipsis,
style: theme.textTheme.bodySmall?.copyWith(
color: isSelected
? theme.colorScheme.onPrimaryContainer
: theme.colorScheme.onSurfaceVariant,
),
)
: null,
trailing: isSelected
? Icon(
Icons.check_circle,
color: theme.colorScheme.onPrimaryContainer,
)
: null,
),
);
},
separatorBuilder: (context, index) => const SizedBox(height: 10),
);
}
Future<void> _loadPorts() async {
if (!mounted) return;
setState(() {
_isLoadingPorts = true;
_errorText = null;
});
try {
final ports = await _connector.listUsbPorts();
if (!mounted) return;
setState(() {
_ports
..clear()
..addAll(ports);
if (_ports.isEmpty) {
_selectedPort = null;
} else if (!_ports.contains(_selectedPort)) {
_selectedPort = _ports.first;
}
_isLoadingPorts = false;
});
} catch (error) {
if (!mounted) return;
setState(() {
_ports.clear();
_selectedPort = null;
_errorText = error.toString();
_isLoadingPorts = false;
});
}
}
Future<void> _connectSelectedPort() async {
final selectedPort = _selectedPort;
if (selectedPort == null || selectedPort.isEmpty) {
return;
}
final rawPortName = normalizeUsbPortName(selectedPort);
setState(() {
_isConnecting = true;
_errorText = null;
});
try {
await _connector.connectUsb(portName: rawPortName);
} catch (error) {
if (!mounted) return;
setState(() {
_isConnecting = false;
_errorText = error.toString();
});
}
}
String _friendlyPortName(String portLabel) => friendlyUsbPortName(portLabel);
}