meshcore-open/lib/screens/channels_screen.dart
zjs81 14ff8250c0 Add support for private and hashtag channels in localization and channel management
- Updated Polish, Portuguese, Slovak, Slovenian, Swedish, and Chinese localization files to include new strings for creating and joining private channels, as well as joining hashtag channels.
- Enhanced the channel management UI to allow users to create and join private channels, join public channels, and join channels via hashtags.
- Implemented PSK derivation from hashtags using SHA256 in the Channel model.
- Improved the translation script to handle missing keys and translate all locales efficiently.
2026-01-16 19:06:39 -07:00

970 lines
36 KiB
Dart

import 'dart:async';
import 'dart:math';
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../connector/meshcore_connector.dart';
import '../l10n/l10n.dart';
import '../models/channel.dart';
import '../utils/dialog_utils.dart';
import '../utils/disconnect_navigation_mixin.dart';
import '../utils/route_transitions.dart';
import '../widgets/battery_indicator.dart';
import '../widgets/list_filter_widget.dart';
import '../widgets/empty_state.dart';
import '../widgets/quick_switch_bar.dart';
import '../widgets/unread_badge.dart';
import 'channel_chat_screen.dart';
import 'contacts_screen.dart';
import 'map_screen.dart';
import 'settings_screen.dart';
enum ChannelSortOption {
manual,
name,
latestMessages,
unread,
}
class ChannelsScreen extends StatefulWidget {
final bool hideBackButton;
const ChannelsScreen({
super.key,
this.hideBackButton = false,
});
@override
State<ChannelsScreen> createState() => _ChannelsScreenState();
}
class _ChannelsScreenState extends State<ChannelsScreen>
with DisconnectNavigationMixin {
final TextEditingController _searchController = TextEditingController();
String _searchQuery = '';
Timer? _searchDebounce;
ChannelSortOption _sortOption = ChannelSortOption.manual;
@override
void initState() {
super.initState();
WidgetsBinding.instance.addPostFrameCallback((_) {
context.read<MeshCoreConnector>().getChannels();
});
}
@override
void dispose() {
_searchDebounce?.cancel();
_searchController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
final connector = context.watch<MeshCoreConnector>();
// Auto-navigate back to scanner if disconnected
if (!checkConnectionAndNavigate(connector)) {
return const SizedBox.shrink();
}
final allowBack = !connector.isConnected;
return PopScope(
canPop: allowBack,
child: Scaffold(
appBar: AppBar(
leading: BatteryIndicator(connector: connector),
title: Text(context.l10n.channels_title),
centerTitle: true,
automaticallyImplyLeading: false,
actions: [
IconButton(
icon: const Icon(Icons.bluetooth_disabled),
tooltip: context.l10n.common_disconnect,
onPressed: () => _disconnect(context),
),
IconButton(
icon: const Icon(Icons.tune),
tooltip: context.l10n.common_settings,
onPressed: () => Navigator.push(
context,
MaterialPageRoute(builder: (context) => const SettingsScreen()),
),
),
],
),
body: RefreshIndicator(
onRefresh: () async {
await context.read<MeshCoreConnector>().getChannels();
},
child: () {
if (connector.isLoadingChannels) {
return const Center(child: CircularProgressIndicator());
}
final channels = connector.channels;
if (channels.isEmpty) {
return ListView(
children: [
SizedBox(
height: MediaQuery.of(context).size.height - 200,
child: EmptyState(
icon: Icons.tag,
title: context.l10n.channels_noChannelsConfigured,
action: FilledButton.icon(
onPressed: () => _addPublicChannel(context, connector),
icon: const Icon(Icons.public),
label: Text(context.l10n.channels_addPublicChannel),
),
),
),
],
);
}
final filteredChannels = _filterAndSortChannels(channels, connector);
return Column(
children: [
Padding(
padding: const EdgeInsets.all(8.0),
child: TextField(
controller: _searchController,
decoration: InputDecoration(
hintText: context.l10n.channels_searchChannels,
prefixIcon: const Icon(Icons.search),
suffixIcon: Row(
mainAxisSize: MainAxisSize.min,
children: [
if (_searchQuery.isNotEmpty)
IconButton(
icon: const Icon(Icons.clear),
onPressed: () {
_searchController.clear();
setState(() {
_searchQuery = '';
});
},
),
_buildFilterButton(),
],
),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(12),
),
contentPadding:
const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
),
onChanged: (value) {
_searchDebounce?.cancel();
_searchDebounce = Timer(const Duration(milliseconds: 300), () {
if (!mounted) return;
setState(() {
_searchQuery = value.toLowerCase();
});
});
},
),
),
Expanded(
child: filteredChannels.isEmpty
? ListView(
children: [
SizedBox(
height: MediaQuery.of(context).size.height - 300,
child: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(Icons.search_off, size: 64, color: Colors.grey[400]),
const SizedBox(height: 16),
Text(
context.l10n.channels_noChannelsFound,
style: TextStyle(fontSize: 16, color: Colors.grey[600]),
),
],
),
),
),
],
)
: (_sortOption == ChannelSortOption.manual && _searchQuery.isEmpty)
? ReorderableListView.builder(
padding: const EdgeInsets.only(
left: 16,
right: 16,
top: 8,
bottom: 88,
),
buildDefaultDragHandles: false,
itemCount: filteredChannels.length,
onReorder: (oldIndex, newIndex) {
if (newIndex > oldIndex) newIndex -= 1;
final reordered = List<Channel>.from(filteredChannels);
final item = reordered.removeAt(oldIndex);
reordered.insert(newIndex, item);
unawaited(
connector.setChannelOrder(
reordered.map((c) => c.index).toList(),
),
);
},
itemBuilder: (context, index) {
final channel = filteredChannels[index];
return _buildChannelTile(
context,
connector,
channel,
showDragHandle: true,
dragIndex: index,
);
},
)
: ListView.builder(
padding: const EdgeInsets.only(
left: 16,
right: 16,
top: 8,
bottom: 88,
),
itemCount: filteredChannels.length,
itemBuilder: (context, index) {
final channel = filteredChannels[index];
return _buildChannelTile(context, connector, channel);
},
),
),
],
);
}(),
),
floatingActionButton: FloatingActionButton(
onPressed: () => _showAddChannelDialog(context),
child: const Icon(Icons.add),
),
bottomNavigationBar: SafeArea(
top: false,
child: QuickSwitchBar(
selectedIndex: 1,
onDestinationSelected: (index) => _handleQuickSwitch(index, context),
),
),
),
);
}
Widget _buildChannelTile(
BuildContext context,
MeshCoreConnector connector,
Channel channel,
{
bool showDragHandle = false,
int? dragIndex,
}
) {
final unreadCount = connector.getUnreadCountForChannel(channel);
return Card(
key: ValueKey('channel_${channel.index}'),
margin: const EdgeInsets.only(bottom: 12),
child: ListTile(
dense: true,
minVerticalPadding: 0,
contentPadding: const EdgeInsets.symmetric(horizontal: 12),
visualDensity: const VisualDensity(vertical: -2),
leading: CircleAvatar(
backgroundColor: channel.isPublicChannel
? Colors.green.withValues(alpha: 0.2)
: Colors.blue.withValues(alpha: 0.2),
child: Icon(
channel.isPublicChannel
? Icons.public
: channel.name.startsWith('#')
? Icons.tag
: Icons.lock,
color: channel.isPublicChannel ? Colors.green : Colors.blue,
),
),
title: Text(
channel.name.isEmpty ? context.l10n.channels_channelIndex(channel.index) : channel.name,
style: const TextStyle(fontWeight: FontWeight.w500),
),
subtitle: Text(
channel.name.startsWith('#')
? context.l10n.channels_hashtagChannel
: channel.isPublicChannel
? context.l10n.channels_publicChannel
: context.l10n.channels_privateChannel,
),
trailing: Row(
mainAxisSize: MainAxisSize.min,
children: [
if (unreadCount > 0) ...[
UnreadBadge(count: unreadCount),
const SizedBox(width: 4),
],
if (showDragHandle && dragIndex != null)
ReorderableDelayedDragStartListener(
index: dragIndex,
child: Icon(
Icons.drag_handle,
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
),
],
),
onTap: () async {
connector.markChannelRead(channel.index);
await Future.delayed(const Duration(milliseconds: 50));
if (context.mounted) {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => ChannelChatScreen(channel: channel),
),
);
}
},
onLongPress: () => _showChannelActions(context, connector, channel),
),
);
}
void _showChannelActions(
BuildContext context,
MeshCoreConnector connector,
Channel channel,
) {
showModalBottomSheet(
context: context,
builder: (context) => SafeArea(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
ListTile(
leading: const Icon(Icons.edit_outlined),
title: Text(context.l10n.channels_editChannel),
onTap: () async {
Navigator.pop(context);
await Future.delayed(const Duration(milliseconds: 100));
if (context.mounted) {
_showEditChannelDialog(context, connector, channel);
}
},
),
ListTile(
leading: const Icon(Icons.delete_outline, color: Colors.red),
title: Text(context.l10n.channels_deleteChannel, style: const TextStyle(color: Colors.red)),
onTap: () async {
Navigator.pop(context);
await Future.delayed(const Duration(milliseconds: 100));
if (context.mounted) {
_confirmDeleteChannel(context, connector, channel);
}
},
),
],
),
),
);
}
void _handleQuickSwitch(int index, BuildContext context) {
if (index == 1) return;
switch (index) {
case 0:
Navigator.pushReplacement(
context,
buildQuickSwitchRoute(
const ContactsScreen(hideBackButton: true),
),
);
break;
case 2:
Navigator.pushReplacement(
context,
buildQuickSwitchRoute(
const MapScreen(hideBackButton: true),
),
);
break;
}
}
Future<void> _disconnect(BuildContext context) async {
final connector = context.read<MeshCoreConnector>();
await showDisconnectDialog(context, connector);
}
Widget _buildFilterButton() {
const actionSortManual = 0;
const actionSortName = 1;
const actionSortLatest = 2;
const actionSortUnread = 3;
return SortFilterMenu(
tooltip: context.l10n.listFilter_tooltip,
sections: [
SortFilterMenuSection(
title: context.l10n.channels_sortBy,
options: [
SortFilterMenuOption(
value: actionSortManual,
label: context.l10n.channels_sortManual,
checked: _sortOption == ChannelSortOption.manual,
),
SortFilterMenuOption(
value: actionSortName,
label: context.l10n.channels_sortAZ,
checked: _sortOption == ChannelSortOption.name,
),
SortFilterMenuOption(
value: actionSortLatest,
label: context.l10n.channels_sortLatestMessages,
checked: _sortOption == ChannelSortOption.latestMessages,
),
SortFilterMenuOption(
value: actionSortUnread,
label: context.l10n.channels_sortUnread,
checked: _sortOption == ChannelSortOption.unread,
),
],
),
],
onSelected: (action) {
setState(() {
switch (action) {
case actionSortManual:
_sortOption = ChannelSortOption.manual;
break;
case actionSortLatest:
_sortOption = ChannelSortOption.latestMessages;
break;
case actionSortUnread:
_sortOption = ChannelSortOption.unread;
break;
case actionSortName:
default:
_sortOption = ChannelSortOption.name;
break;
}
});
},
);
}
List<Channel> _filterAndSortChannels(
List<Channel> channels,
MeshCoreConnector connector,
) {
var filtered = channels.where((channel) {
if (_searchQuery.isEmpty) return true;
final label = _normalizeChannelName(channel);
return label.toLowerCase().contains(_searchQuery);
}).toList();
int compareByName(Channel a, Channel b) {
final nameA = _normalizeChannelName(a);
final nameB = _normalizeChannelName(b);
return nameA.toLowerCase().compareTo(nameB.toLowerCase());
}
switch (_sortOption) {
case ChannelSortOption.manual:
break;
case ChannelSortOption.latestMessages:
filtered.sort((a, b) {
final aMessages = connector.getChannelMessages(a);
final bMessages = connector.getChannelMessages(b);
final aLast = aMessages.isEmpty ? DateTime(1970) : aMessages.last.timestamp;
final bLast = bMessages.isEmpty ? DateTime(1970) : bMessages.last.timestamp;
final timeCompare = bLast.compareTo(aLast);
if (timeCompare != 0) return timeCompare;
return compareByName(a, b);
});
break;
case ChannelSortOption.unread:
filtered.sort((a, b) {
final aUnread = connector.getUnreadCountForChannel(a);
final bUnread = connector.getUnreadCountForChannel(b);
final unreadCompare = bUnread.compareTo(aUnread);
if (unreadCompare != 0) return unreadCompare;
return compareByName(a, b);
});
break;
case ChannelSortOption.name:
filtered.sort(compareByName);
break;
}
return filtered;
}
String _normalizeChannelName(Channel channel) {
if (channel.name.isEmpty) return 'Channel ${channel.index}'; // Fallback for sorting
final trimmed = channel.name.trim();
if (trimmed.startsWith('#') && trimmed.length > 1) {
return trimmed.substring(1);
}
return trimmed;
}
void _showAddChannelDialog(BuildContext context) {
final connector = context.read<MeshCoreConnector>();
final nextIndex = _findNextAvailableIndex(connector.channels, connector.maxChannels);
final hasPublicChannel = connector.channels.any((c) => c.isPublicChannel);
int? selectedOption;
final nameController = TextEditingController();
final pskController = TextEditingController();
final hashtagController = TextEditingController();
showDialog(
context: context,
builder: (dialogContext) => StatefulBuilder(
builder: (dialogContext, setDialogState) {
Widget buildOptionTile({
required int optionIndex,
required IconData icon,
required String title,
required String subtitle,
bool enabled = true,
}) {
final isSelected = selectedOption == optionIndex;
return ListTile(
leading: CircleAvatar(
backgroundColor: enabled
? (isSelected ? Theme.of(dialogContext).colorScheme.primaryContainer : null)
: Colors.grey.withValues(alpha: 0.2),
child: Icon(
icon,
color: enabled
? (isSelected ? Theme.of(dialogContext).colorScheme.primary : null)
: Colors.grey,
),
),
title: Text(
title,
style: TextStyle(color: enabled ? null : Colors.grey),
),
subtitle: Text(
subtitle,
style: TextStyle(color: enabled ? null : Colors.grey),
),
trailing: enabled ? const Icon(Icons.chevron_right) : null,
selected: isSelected,
onTap: enabled
? () {
setDialogState(() {
selectedOption = optionIndex;
nameController.clear();
pskController.clear();
hashtagController.clear();
});
}
: null,
);
}
Widget? buildExpandedContent() {
switch (selectedOption) {
case 0: // Create Private Channel
return Column(
children: [
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
child: TextField(
controller: nameController,
decoration: InputDecoration(
labelText: dialogContext.l10n.channels_channelName,
border: const OutlineInputBorder(),
),
maxLength: 31,
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16),
child: Row(
children: [
Expanded(
child: FilledButton(
onPressed: () {
final name = nameController.text.trim();
if (name.isEmpty) {
ScaffoldMessenger.of(dialogContext).showSnackBar(
SnackBar(content: Text(dialogContext.l10n.channels_enterChannelName)),
);
return;
}
final random = Random.secure();
final psk = Uint8List(16);
for (int i = 0; i < 16; i++) {
psk[i] = random.nextInt(256);
}
Navigator.pop(dialogContext);
connector.setChannel(nextIndex, name, psk);
if (context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(context.l10n.channels_channelAdded(name))),
);
}
},
child: Text(dialogContext.l10n.common_create),
),
),
],
),
),
],
);
case 1: // Join Private Channel
return Column(
children: [
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
child: TextField(
controller: nameController,
decoration: InputDecoration(
labelText: dialogContext.l10n.channels_channelName,
border: const OutlineInputBorder(),
),
maxLength: 31,
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
child: TextField(
controller: pskController,
decoration: InputDecoration(
labelText: dialogContext.l10n.channels_pskHex,
border: const OutlineInputBorder(),
),
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16),
child: Row(
children: [
Expanded(
child: FilledButton(
onPressed: () {
final name = nameController.text.trim();
final pskHex = pskController.text.trim();
if (name.isEmpty) {
ScaffoldMessenger.of(dialogContext).showSnackBar(
SnackBar(content: Text(dialogContext.l10n.channels_enterChannelName)),
);
return;
}
Uint8List psk;
try {
psk = Channel.parsePskHex(pskHex);
} on FormatException {
ScaffoldMessenger.of(dialogContext).showSnackBar(
SnackBar(content: Text(dialogContext.l10n.channels_pskMustBe32Hex)),
);
return;
}
Navigator.pop(dialogContext);
connector.setChannel(nextIndex, name, psk);
if (context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(context.l10n.channels_channelAdded(name))),
);
}
},
child: Text(dialogContext.l10n.common_add),
),
),
],
),
),
],
);
case 2: // Join Public Channel
return Padding(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
child: Row(
children: [
Expanded(
child: FilledButton(
onPressed: () {
final psk = Channel.parsePskHex(Channel.publicChannelPsk);
Navigator.pop(dialogContext);
connector.setChannel(nextIndex, 'Public', psk);
if (context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(context.l10n.channels_publicChannelAdded)),
);
}
},
child: Text(dialogContext.l10n.common_add),
),
),
],
),
);
case 3: // Join Hashtag Channel
return Column(
children: [
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
child: TextField(
controller: hashtagController,
decoration: InputDecoration(
labelText: dialogContext.l10n.channels_enterHashtag,
hintText: dialogContext.l10n.channels_hashtagHint,
border: const OutlineInputBorder(),
prefixIcon: const Icon(Icons.tag),
),
maxLength: 31,
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16),
child: Row(
children: [
Expanded(
child: FilledButton(
onPressed: () {
var hashtag = hashtagController.text.trim();
if (hashtag.isEmpty) {
ScaffoldMessenger.of(dialogContext).showSnackBar(
SnackBar(content: Text(dialogContext.l10n.channels_enterChannelName)),
);
return;
}
// Normalize hashtag name
final name = hashtag.startsWith('#') ? hashtag : '#$hashtag';
final psk = Channel.derivePskFromHashtag(hashtag);
Navigator.pop(dialogContext);
connector.setChannel(nextIndex, name, psk);
if (context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(context.l10n.channels_channelAdded(name))),
);
}
},
child: Text(dialogContext.l10n.common_add),
),
),
],
),
),
],
);
default:
return null;
}
}
return AlertDialog(
title: Text(dialogContext.l10n.channels_addChannel),
contentPadding: const EdgeInsets.symmetric(vertical: 16),
content: SizedBox(
width: double.maxFinite,
child: SingleChildScrollView(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
buildOptionTile(
optionIndex: 0,
icon: Icons.add,
title: dialogContext.l10n.channels_createPrivateChannel,
subtitle: dialogContext.l10n.channels_createPrivateChannelDesc,
),
if (selectedOption == 0) buildExpandedContent()!,
const Divider(height: 1),
buildOptionTile(
optionIndex: 1,
icon: Icons.lock,
title: dialogContext.l10n.channels_joinPrivateChannel,
subtitle: dialogContext.l10n.channels_joinPrivateChannelDesc,
),
if (selectedOption == 1) buildExpandedContent()!,
if (!hasPublicChannel) ...[
const Divider(height: 1),
buildOptionTile(
optionIndex: 2,
icon: Icons.public,
title: dialogContext.l10n.channels_joinPublicChannel,
subtitle: dialogContext.l10n.channels_joinPublicChannelDesc,
),
if (selectedOption == 2) buildExpandedContent()!,
],
const Divider(height: 1),
buildOptionTile(
optionIndex: 3,
icon: Icons.tag,
title: dialogContext.l10n.channels_joinHashtagChannel,
subtitle: dialogContext.l10n.channels_joinHashtagChannelDesc,
),
if (selectedOption == 3) buildExpandedContent()!,
const Divider(height: 1),
buildOptionTile(
optionIndex: 4,
icon: Icons.qr_code,
title: dialogContext.l10n.channels_scanQrCode,
subtitle: dialogContext.l10n.channels_scanQrCodeComingSoon,
enabled: false,
),
],
),
),
),
actions: [
TextButton(
onPressed: () => Navigator.pop(dialogContext),
child: Text(dialogContext.l10n.common_close),
),
],
);
},
),
);
}
void _showEditChannelDialog(
BuildContext context,
MeshCoreConnector connector,
Channel channel,
) {
final nameController = TextEditingController(text: channel.name);
final pskController = TextEditingController(text: channel.pskHex);
bool smazEnabled = connector.isChannelSmazEnabled(channel.index);
showDialog(
context: context,
builder: (dialogContext) => StatefulBuilder(
builder: (dialogContext, setState) => AlertDialog(
title: Text(dialogContext.l10n.channels_editChannelTitle(channel.index)),
content: SingleChildScrollView(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
TextField(
controller: nameController,
decoration: InputDecoration(
labelText: dialogContext.l10n.channels_channelName,
border: const OutlineInputBorder(),
),
maxLength: 31,
),
const SizedBox(height: 16),
TextField(
controller: pskController,
decoration: InputDecoration(
labelText: dialogContext.l10n.channels_pskHex,
border: const OutlineInputBorder(),
suffixIcon: IconButton(
icon: const Icon(Icons.casino),
tooltip: dialogContext.l10n.channels_generateRandomPsk,
onPressed: () {
final random = Random.secure();
final bytes = Uint8List(16);
for (int i = 0; i < 16; i++) {
bytes[i] = random.nextInt(256);
}
pskController.text = Channel.formatPskHex(bytes);
},
),
),
),
const SizedBox(height: 16),
SwitchListTile(
contentPadding: EdgeInsets.zero,
title: Text(dialogContext.l10n.channels_smazCompression),
value: smazEnabled,
onChanged: (value) => setState(() => smazEnabled = value),
),
],
),
),
actions: [
TextButton(
onPressed: () => Navigator.pop(dialogContext),
child: Text(dialogContext.l10n.common_cancel),
),
FilledButton(
onPressed: () {
final name = nameController.text.trim();
final pskHex = pskController.text.trim();
Uint8List psk;
try {
psk = Channel.parsePskHex(pskHex);
} on FormatException {
ScaffoldMessenger.of(dialogContext).showSnackBar(
SnackBar(content: Text(dialogContext.l10n.channels_pskMustBe32Hex)),
);
return;
}
Navigator.pop(dialogContext);
connector.setChannel(channel.index, name, psk);
connector.setChannelSmazEnabled(channel.index, smazEnabled);
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(context.l10n.channels_channelUpdated(name))),
);
},
child: Text(dialogContext.l10n.common_save),
),
],
),
),
);
}
void _confirmDeleteChannel(
BuildContext context,
MeshCoreConnector connector,
Channel channel,
) {
showDialog(
context: context,
builder: (dialogContext) => AlertDialog(
title: Text(dialogContext.l10n.channels_deleteChannel),
content: Text(dialogContext.l10n.channels_deleteChannelConfirm(channel.name)),
actions: [
TextButton(
onPressed: () => Navigator.pop(dialogContext),
child: Text(dialogContext.l10n.common_cancel),
),
TextButton(
onPressed: () {
Navigator.pop(dialogContext);
connector.deleteChannel(channel.index);
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(context.l10n.channels_channelDeleted(channel.name))),
);
},
child: Text(dialogContext.l10n.common_delete, style: const TextStyle(color: Colors.red)),
),
],
),
);
}
void _addPublicChannel(BuildContext context, MeshCoreConnector connector) {
final psk = Channel.parsePskHex(Channel.publicChannelPsk);
connector.setChannel(0, 'Public', psk);
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(context.l10n.channels_publicChannelAdded)),
);
}
int _findNextAvailableIndex(List<Channel> channels, int maxChannels) {
final usedIndices = channels.map((c) => c.index).toSet();
for (int i = 0; i < maxChannels; i++) {
if (!usedIndices.contains(i)) return i;
}
return 0;
}
}