642 lines
22 KiB
Dart
642 lines
22 KiB
Dart
part of 'traction.dart';
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class TractionPage extends StatefulWidget {
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const TractionPage({
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super.key,
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this.selectionMode = false,
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this.onSelect,
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this.selectedKeys = const {},
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});
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final bool selectionMode;
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final ValueChanged<LocoSummary>? onSelect;
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final Set<String> selectedKeys;
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@override
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State<TractionPage> createState() => _TractionPageState();
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}
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class _TractionPageState extends State<TractionPage> {
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final _classController = TextEditingController();
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final _classFocusNode = FocusNode();
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final _numberController = TextEditingController();
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final _nameController = TextEditingController();
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bool _mileageFirst = true;
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bool _initialised = false;
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bool _showAdvancedFilters = false;
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String? _selectedClass;
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late Set<String> _selectedKeys;
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final Map<String, TextEditingController> _dynamicControllers = {};
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final Map<String, String?> _enumSelections = {};
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bool _restoredFromPrefs = false;
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@override
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void initState() {
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super.initState();
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_classController.addListener(_onClassTextChanged);
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}
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@override
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void didChangeDependencies() {
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super.didChangeDependencies();
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if (!_initialised) {
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_initialised = true;
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_selectedKeys = {...widget.selectedKeys};
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WidgetsBinding.instance.addPostFrameCallback((_) {
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_initialLoad();
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});
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}
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}
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Future<void> _initialLoad() async {
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final data = context.read<DataService>();
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await _restoreSearchState();
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data.fetchClassList();
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data.fetchEventFields();
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await _refreshTraction();
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}
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@override
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void dispose() {
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_classController.removeListener(_onClassTextChanged);
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_persistSearchState();
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_classController.dispose();
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_classFocusNode.dispose();
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_numberController.dispose();
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_nameController.dispose();
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for (final controller in _dynamicControllers.values) {
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controller.dispose();
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}
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super.dispose();
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}
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void _setState(VoidCallback fn) {
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if (!mounted) return;
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// ignore: invalid_use_of_protected_member
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setState(fn);
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}
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bool get _hasFilters {
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final dynamicFieldsUsed =
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_dynamicControllers.values.any(
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(controller) => controller.text.trim().isNotEmpty,
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) ||
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_enumSelections.values.any(
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(value) => (value ?? '').toString().trim().isNotEmpty,
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);
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return [
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_selectedClass,
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_classController.text,
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_numberController.text,
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_nameController.text,
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].any((value) => (value ?? '').toString().trim().isNotEmpty) ||
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dynamicFieldsUsed;
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}
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Future<void> _refreshTraction({bool append = false}) async {
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final data = context.read<DataService>();
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final filters = <String, dynamic>{};
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final name = _nameController.text.trim();
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if (name.isNotEmpty) filters['name'] = name;
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_dynamicControllers.forEach((key, controller) {
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final value = controller.text.trim();
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if (value.isNotEmpty) filters[key] = value;
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});
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_enumSelections.forEach((key, value) {
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if (value != null && value.toString().trim().isNotEmpty) {
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filters[key] = value;
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}
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});
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final hadOnly = !_hasFilters;
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await data.fetchTraction(
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hadOnly: hadOnly,
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locoClass: _selectedClass ?? _classController.text.trim(),
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locoNumber: _numberController.text.trim(),
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offset: append ? data.traction.length : 0,
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append: append,
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filters: filters,
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mileageFirst: _mileageFirst,
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);
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await _persistSearchState();
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}
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void _clearFilters() {
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for (final controller in [
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_classController,
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_numberController,
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_nameController,
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]) {
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controller.clear();
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}
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for (final controller in _dynamicControllers.values) {
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controller.clear();
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}
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_enumSelections.clear();
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setState(() {
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_selectedClass = null;
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_mileageFirst = true;
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});
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_refreshTraction();
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}
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void _onClassTextChanged() {
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if (_selectedClass != null &&
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_classController.text.trim() != (_selectedClass ?? '')) {
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setState(() {
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_selectedClass = null;
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});
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}
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}
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List<EventField> _activeEventFields(List<EventField> fields) {
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return fields
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.where(
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(field) => ![
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'class',
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'number',
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'name',
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'build date',
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'build_date',
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].contains(field.name.toLowerCase()),
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)
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.toList();
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}
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void _ensureControllersForFields(List<EventField> fields) {
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for (final field in fields) {
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if (field.enumValues != null) {
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_enumSelections.putIfAbsent(field.name, () => null);
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} else {
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_dynamicControllers.putIfAbsent(
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field.name,
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() => TextEditingController(),
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);
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}
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}
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}
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@override
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Widget build(BuildContext context) {
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final data = context.watch<DataService>();
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final traction = data.traction;
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final classOptions = data.locoClasses;
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final isMobile = MediaQuery.of(context).size.width < 700;
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_ensureControllersForFields(data.eventFields);
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final extraFields = _activeEventFields(data.eventFields);
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final listView = RefreshIndicator(
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onRefresh: _refreshTraction,
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child: ListView(
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padding: const EdgeInsets.all(16),
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physics: const AlwaysScrollableScrollPhysics(),
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children: [
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Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'Fleet',
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style: Theme.of(context).textTheme.labelMedium,
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),
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const SizedBox(height: 2),
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Text(
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'Traction',
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style: Theme.of(context).textTheme.headlineSmall,
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),
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],
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),
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),
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Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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IconButton(
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tooltip: 'Refresh',
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onPressed: _refreshTraction,
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icon: const Icon(Icons.refresh),
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),
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const SizedBox(width: 8),
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FilledButton.icon(
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onPressed: () async {
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final createdClass = await context.push<String>(
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'/traction/new',
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);
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if (createdClass != null && createdClass.isNotEmpty) {
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_classController.text = createdClass;
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_selectedClass = createdClass;
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if (mounted) {
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_refreshTraction();
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}
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} else if (mounted && createdClass == '') {
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_refreshTraction();
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}
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},
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icon: const Icon(Icons.add),
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label: const Text('New Traction'),
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),
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],
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),
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],
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),
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const SizedBox(height: 12),
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Card(
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child: Padding(
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padding: const EdgeInsets.all(12),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Text(
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'Filters',
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style: Theme.of(context).textTheme.titleMedium,
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),
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TextButton(
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onPressed: _clearFilters,
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child: const Text('Clear'),
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),
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],
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),
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const SizedBox(height: 8),
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Wrap(
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spacing: 12,
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runSpacing: 12,
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children: [
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SizedBox(
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width: isMobile ? double.infinity : 240,
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child: RawAutocomplete<String>(
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textEditingController: _classController,
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focusNode: _classFocusNode,
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optionsBuilder: (TextEditingValue textEditingValue) {
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final query = textEditingValue.text.toLowerCase();
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if (query.isEmpty) {
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return classOptions;
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}
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return classOptions.where(
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(c) => c.toLowerCase().contains(query),
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);
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},
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fieldViewBuilder:
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(
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context,
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controller,
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focusNode,
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onFieldSubmitted,
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) {
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return TextField(
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controller: controller,
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focusNode: focusNode,
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decoration: const InputDecoration(
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labelText: 'Class',
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border: OutlineInputBorder(),
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),
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onSubmitted: (_) => _refreshTraction(),
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);
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},
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optionsViewBuilder: (context, onSelected, options) {
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final optionList = options.toList();
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if (optionList.isEmpty) {
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return const SizedBox.shrink();
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}
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final maxWidth = isMobile
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? MediaQuery.of(context).size.width - 64
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: 240.0;
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return Align(
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alignment: Alignment.topLeft,
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child: Material(
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elevation: 4,
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child: ConstrainedBox(
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constraints: BoxConstraints(
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maxWidth: maxWidth,
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maxHeight: 240,
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),
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child: ListView.builder(
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padding: EdgeInsets.zero,
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shrinkWrap: true,
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itemCount: optionList.length,
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itemBuilder: (context, index) {
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final option = optionList[index];
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return ListTile(
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title: Text(option),
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onTap: () => onSelected(option),
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);
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},
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),
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),
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),
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);
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},
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onSelected: (String selection) {
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setState(() {
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_selectedClass = selection;
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_classController.text = selection;
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});
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_refreshTraction();
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},
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),
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),
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SizedBox(
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width: isMobile ? double.infinity : 220,
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child: TextField(
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controller: _numberController,
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decoration: const InputDecoration(
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labelText: 'Number',
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border: OutlineInputBorder(),
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),
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onSubmitted: (_) => _refreshTraction(),
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),
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),
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SizedBox(
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width: isMobile ? double.infinity : 220,
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child: TextField(
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controller: _nameController,
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decoration: const InputDecoration(
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labelText: 'Name',
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border: OutlineInputBorder(),
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),
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onSubmitted: (_) => _refreshTraction(),
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),
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),
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FilterChip(
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label: Text(
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_mileageFirst ? 'Mileage first' : 'Number order',
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),
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selected: _mileageFirst,
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onSelected: (v) {
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setState(() => _mileageFirst = v);
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_refreshTraction();
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},
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),
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TextButton.icon(
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onPressed: () => setState(
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() => _showAdvancedFilters = !_showAdvancedFilters,
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),
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icon: Icon(
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_showAdvancedFilters
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? Icons.expand_less
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: Icons.expand_more,
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),
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label: Text(
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_showAdvancedFilters
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? 'Hide filters'
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: 'More filters',
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),
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),
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ElevatedButton.icon(
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onPressed: _refreshTraction,
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icon: const Icon(Icons.search),
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label: const Text('Search'),
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),
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],
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),
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AnimatedCrossFade(
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crossFadeState: _showAdvancedFilters
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? CrossFadeState.showFirst
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: CrossFadeState.showSecond,
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duration: const Duration(milliseconds: 200),
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firstChild: Padding(
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padding: const EdgeInsets.only(top: 12.0),
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child: data.isEventFieldsLoading
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? const Center(
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child: Padding(
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padding: EdgeInsets.all(8.0),
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child: CircularProgressIndicator(
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strokeWidth: 2,
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),
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),
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)
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: extraFields.isEmpty
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? const Text('No extra filters available right now.')
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: Wrap(
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spacing: 12,
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runSpacing: 12,
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children: extraFields
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.map(
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(field) => _buildFilterInput(
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context,
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field,
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isMobile,
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),
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)
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.toList(),
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),
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),
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secondChild: const SizedBox.shrink(),
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),
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],
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),
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),
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),
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const SizedBox(height: 12),
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Stack(
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children: [
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if (data.isTractionLoading && traction.isEmpty)
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const Padding(
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padding: EdgeInsets.symmetric(vertical: 32.0),
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child: Center(child: CircularProgressIndicator()),
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)
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else if (traction.isEmpty)
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Card(
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'No traction found',
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style: Theme.of(context).textTheme.titleMedium?.copyWith(
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fontWeight: FontWeight.w700,
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),
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),
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const SizedBox(height: 8),
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const Text('Try relaxing the filters or sync again.'),
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],
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),
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),
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)
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else
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Column(
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children: [
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...traction.map(
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(loco) => TractionCard(
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loco: loco,
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selectionMode: widget.selectionMode,
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isSelected: _isSelected(loco),
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onShowInfo: () => showTractionDetails(context, loco),
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onOpenTimeline: () => _openTimeline(loco),
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onOpenLegs: () => _openLegs(loco),
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onToggleSelect:
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widget.selectionMode ? () => _toggleSelection(loco) : null,
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),
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),
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if (data.tractionHasMore || data.isTractionLoading)
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Padding(
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padding: const EdgeInsets.only(top: 8.0),
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child: OutlinedButton.icon(
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onPressed: data.isTractionLoading
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? null
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: () => _refreshTraction(append: true),
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icon: data.isTractionLoading
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? const SizedBox(
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height: 14,
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width: 14,
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child: CircularProgressIndicator(strokeWidth: 2),
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)
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: const Icon(Icons.expand_more),
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label: Text(
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data.isTractionLoading ? 'Loading...' : 'Load more',
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),
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),
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),
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],
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),
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if (data.isTractionLoading)
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Positioned.fill(
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child: IgnorePointer(
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child: Container(
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color: Theme.of(context).colorScheme.surface.withValues(alpha: 0.6),
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child: const Center(child: CircularProgressIndicator()),
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),
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),
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),
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],
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),
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],
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),
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);
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if (widget.selectionMode) {
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return Scaffold(
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appBar: AppBar(
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leadingWidth: 140,
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leading: Padding(
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padding: const EdgeInsets.only(left: 8.0),
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child: TextButton.icon(
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onPressed: () => Navigator.of(context).pop(),
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icon: const Icon(Icons.arrow_back),
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label: const Text('Back'),
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style: TextButton.styleFrom(
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padding: const EdgeInsets.symmetric(
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horizontal: 12,
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vertical: 10,
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),
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foregroundColor: Theme.of(context).colorScheme.onSurface,
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),
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),
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),
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title: null,
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),
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body: listView,
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);
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}
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return listView;
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}
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void _toggleSelection(LocoSummary loco) {
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final keyVal = '${loco.locoClass}-${loco.number}';
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if (widget.onSelect != null) {
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widget.onSelect!(loco);
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}
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setState(() {
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if (_selectedKeys.contains(keyVal)) {
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_selectedKeys.remove(keyVal);
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} else {
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_selectedKeys.add(keyVal);
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}
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});
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}
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bool _isSelected(LocoSummary loco) {
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final keyVal = '${loco.locoClass}-${loco.number}';
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return _selectedKeys.contains(keyVal);
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}
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Future<void> _openTimeline(LocoSummary loco) async {
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final label = '${loco.locoClass} ${loco.number}'.trim();
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await context.push(
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'/traction/${loco.id}/timeline',
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extra: {'label': label},
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);
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if (!mounted) return;
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await _refreshTraction();
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}
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Future<void> _openLegs(LocoSummary loco) async {
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final label = '${loco.locoClass} ${loco.number}'.trim();
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await context.push(
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'/traction/${loco.id}/legs',
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extra: {'label': label},
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);
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}
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Widget _buildFilterInput(
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BuildContext context,
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EventField field,
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bool isMobile,
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) {
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final width = isMobile ? double.infinity : 220.0;
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if (field.enumValues != null && field.enumValues!.isNotEmpty) {
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final options = field.enumValues!
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.map((e) => e.toString())
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.toSet()
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.toList();
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final currentValue = _enumSelections[field.name];
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final safeValue = options.contains(currentValue) ? currentValue : null;
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return SizedBox(
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width: width,
|
|
child: DropdownButtonFormField<String?>(
|
|
value: safeValue,
|
|
decoration: InputDecoration(
|
|
labelText: field.display,
|
|
border: const OutlineInputBorder(),
|
|
),
|
|
items: [
|
|
const DropdownMenuItem(value: null, child: Text('Any')),
|
|
...options.map(
|
|
(value) => DropdownMenuItem(value: value, child: Text(value)),
|
|
),
|
|
],
|
|
onChanged: (val) {
|
|
setState(() {
|
|
_enumSelections[field.name] = val;
|
|
});
|
|
_refreshTraction();
|
|
},
|
|
),
|
|
);
|
|
}
|
|
|
|
final controller =
|
|
_dynamicControllers[field.name] ?? TextEditingController();
|
|
_dynamicControllers[field.name] = controller;
|
|
TextInputType? inputType;
|
|
if (field.type != null) {
|
|
final type = field.type!.toLowerCase();
|
|
if (type.contains('int') ||
|
|
type.contains('num') ||
|
|
type.contains('double')) {
|
|
inputType = const TextInputType.numberWithOptions(decimal: true);
|
|
}
|
|
}
|
|
|
|
return SizedBox(
|
|
width: width,
|
|
child: TextField(
|
|
controller: controller,
|
|
keyboardType: inputType,
|
|
decoration: InputDecoration(
|
|
labelText: field.display,
|
|
border: const OutlineInputBorder(),
|
|
),
|
|
onSubmitted: (_) => _refreshTraction(),
|
|
),
|
|
);
|
|
}
|
|
}
|