mirror of
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Compass app (#2446)
This commit is contained in:
Eric Windmill
GitHub
@@ -0,0 +1,162 @@
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// Copyright 2024 The Flutter team. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:logging/logging.dart';
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import '../../../data/repositories/continent/continent_repository.dart';
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import '../../../data/repositories/itinerary_config/itinerary_config_repository.dart';
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import '../../../domain/models/continent/continent.dart';
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import '../../../domain/models/itinerary_config/itinerary_config.dart';
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import '../../../utils/command.dart';
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import '../../../utils/result.dart';
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/// View model for the search form.
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///
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/// Contains the form selected options
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/// and the logic to load the list of regions.
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class SearchFormViewModel extends ChangeNotifier {
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SearchFormViewModel({
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required ContinentRepository continentRepository,
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required ItineraryConfigRepository itineraryConfigRepository,
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}) : _continentRepository = continentRepository,
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_itineraryConfigRepository = itineraryConfigRepository {
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updateItineraryConfig = Command0(_updateItineraryConfig);
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load = Command0(_load)..execute();
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}
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final _log = Logger('SearchFormViewModel');
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final ContinentRepository _continentRepository;
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final ItineraryConfigRepository _itineraryConfigRepository;
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List<Continent> _continents = [];
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String? _selectedContinent;
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DateTimeRange? _dateRange;
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int _guests = 0;
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/// True if the form is valid and can be submitted
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bool get valid =>
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_guests > 0 && _selectedContinent != null && _dateRange != null;
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/// List of continents.
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/// Loaded in [load] command.
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List<Continent> get continents => _continents;
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/// Selected continent.
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/// Null means no continent is selected.
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String? get selectedContinent => _selectedContinent;
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/// Set selected continent.
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/// Set to null to clear the selection.
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set selectedContinent(String? continent) {
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_selectedContinent = continent;
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_log.finest('Selected continent: $continent');
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notifyListeners();
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}
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/// Date range.
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/// Null means no range is selected.
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DateTimeRange? get dateRange => _dateRange;
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/// Set date range.
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/// Can be set to null to clear selection.
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set dateRange(DateTimeRange? dateRange) {
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_dateRange = dateRange;
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_log.finest('Selected date range: $dateRange');
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notifyListeners();
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}
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/// Number of guests
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int get guests => _guests;
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/// Set number of guests
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/// If the quantity is negative, it will be set to 0
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set guests(int quantity) {
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if (quantity < 0) {
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_guests = 0;
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} else {
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_guests = quantity;
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}
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_log.finest('Set guests number: $_guests');
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notifyListeners();
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}
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/// Load the list of continents and current itinerary config.
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late final Command0 load;
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/// Store ViewModel data into [ItineraryConfigRepository] before navigating.
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late final Command0 updateItineraryConfig;
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Future<Result<void>> _load() async {
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final result = await _loadContinents();
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if (result is Error) {
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return result;
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}
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return await _loadItineraryConfig();
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}
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Future<Result<void>> _loadContinents() async {
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final result = await _continentRepository.getContinents();
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switch (result) {
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case Ok():
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{
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_continents = result.value;
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_log.fine('Continents (${_continents.length}) loaded');
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}
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case Error():
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{
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_log.warning('Failed to load continents', result.asError.error);
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}
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}
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notifyListeners();
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return result;
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}
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Future<Result<void>> _loadItineraryConfig() async {
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final result = await _itineraryConfigRepository.getItineraryConfig();
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switch (result) {
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case Ok<ItineraryConfig>():
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{
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final itineraryConfig = result.value;
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_selectedContinent = itineraryConfig.continent;
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if (itineraryConfig.startDate != null &&
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itineraryConfig.endDate != null) {
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_dateRange = DateTimeRange(
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start: itineraryConfig.startDate!,
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end: itineraryConfig.endDate!,
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);
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}
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_guests = itineraryConfig.guests ?? 0;
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_log.fine('ItineraryConfig loaded');
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notifyListeners();
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}
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case Error<ItineraryConfig>():
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{
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_log.warning(
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'Failed to load stored ItineraryConfig',
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result.asError.error,
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);
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}
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}
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return result;
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}
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Future<Result<void>> _updateItineraryConfig() async {
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assert(valid, "called when valid was false");
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final result = await _itineraryConfigRepository.setItineraryConfig(
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ItineraryConfig(
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continent: _selectedContinent,
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startDate: _dateRange!.start,
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endDate: _dateRange!.end,
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guests: _guests,
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),
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);
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switch (result) {
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case Ok<void>():
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_log.fine('ItineraryConfig saved');
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case Error<void>():
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_log.warning('Failed to store ItineraryConfig', result.error);
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}
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return result;
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}
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}
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@@ -0,0 +1,168 @@
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// Copyright 2024 The Flutter team. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:cached_network_image/cached_network_image.dart';
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import 'package:flutter/material.dart';
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import 'package:google_fonts/google_fonts.dart';
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import '../../../domain/models/continent/continent.dart';
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import '../../../utils/image_error_listener.dart';
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import '../../core/localization/applocalization.dart';
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import '../../core/themes/colors.dart';
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import '../../core/themes/dimens.dart';
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import '../../core/ui/error_indicator.dart';
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import '../view_models/search_form_viewmodel.dart';
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/// Continent selection carousel
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///
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/// Loads a list of continents in a horizontal carousel.
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/// Users can tap one item to select it.
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/// Tapping again the same item will deselect it.
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class SearchFormContinent extends StatelessWidget {
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const SearchFormContinent({
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super.key,
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required this.viewModel,
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});
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final SearchFormViewModel viewModel;
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@override
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Widget build(BuildContext context) {
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return SizedBox(
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height: 140,
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child: ListenableBuilder(
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listenable: viewModel.load,
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builder: (context, child) {
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if (viewModel.load.running) {
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return const Center(
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child: CircularProgressIndicator(),
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);
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}
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if (viewModel.load.error) {
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return Center(
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child: ErrorIndicator(
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title: AppLocalization.of(context).errorWhileLoadingContinents,
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label: AppLocalization.of(context).tryAgain,
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onPressed: viewModel.load.execute,
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),
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);
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}
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return child!;
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},
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child: ListenableBuilder(
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listenable: viewModel,
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builder: (context, child) {
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return ListView.separated(
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scrollDirection: Axis.horizontal,
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itemCount: viewModel.continents.length,
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padding: Dimens.of(context).edgeInsetsScreenHorizontal,
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itemBuilder: (BuildContext context, int index) {
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final Continent(:imageUrl, :name) = viewModel.continents[index];
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return _CarouselItem(
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key: ValueKey(name),
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imageUrl: imageUrl,
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name: name,
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viewModel: viewModel,
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);
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},
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separatorBuilder: (BuildContext context, int index) {
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return const SizedBox(width: 8);
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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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class _CarouselItem extends StatelessWidget {
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const _CarouselItem({
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super.key,
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required this.imageUrl,
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required this.name,
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required this.viewModel,
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});
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final String imageUrl;
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final String name;
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final SearchFormViewModel viewModel;
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bool _selected() =>
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viewModel.selectedContinent == null ||
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viewModel.selectedContinent == name;
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@override
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Widget build(BuildContext context) {
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return SizedBox(
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width: 140,
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height: 140,
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child: ClipRRect(
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borderRadius: BorderRadius.circular(10),
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child: Stack(
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children: [
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CachedNetworkImage(
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imageUrl: imageUrl,
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fit: BoxFit.cover,
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errorListener: imageErrorListener,
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errorWidget: (context, url, error) {
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// NOTE: Getting "invalid image data" error for some of the images
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// e.g. https://rstr.in/google/tripedia/jlbgFDrSUVE
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return const DecoratedBox(
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decoration: BoxDecoration(
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color: AppColors.grey3,
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),
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child: SizedBox(width: 140, height: 140),
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);
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},
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),
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Align(
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alignment: Alignment.center,
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Text(
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name,
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textAlign: TextAlign.center,
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style: GoogleFonts.openSans(
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fontSize: 18,
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fontWeight: FontWeight.w500,
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color: AppColors.white1,
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),
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),
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),
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),
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// Overlay when other continent is selected
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Positioned.fill(
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child: AnimatedOpacity(
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opacity: _selected() ? 0 : 0.7,
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duration: kThemeChangeDuration,
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child: DecoratedBox(
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decoration: BoxDecoration(
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// Support dark-mode
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color: Theme.of(context).colorScheme.onPrimary,
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),
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),
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),
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),
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// Handle taps
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Positioned.fill(
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child: Material(
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color: Colors.transparent,
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child: InkWell(
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onTap: () {
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if (viewModel.selectedContinent == name) {
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viewModel.selectedContinent = null;
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} else {
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viewModel.selectedContinent = name;
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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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);
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}
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}
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@@ -0,0 +1,82 @@
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// Copyright 2024 The Flutter team. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file.
|
||||
|
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import 'package:flutter/material.dart';
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import '../../core/localization/applocalization.dart';
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import '../../core/themes/dimens.dart';
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import '../../core/ui/date_format_start_end.dart';
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import '../../core/themes/colors.dart';
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import '../view_models/search_form_viewmodel.dart';
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/// Date selection form field.
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///
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/// Opens a date range picker dialog when tapped.
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class SearchFormDate extends StatelessWidget {
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const SearchFormDate({
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super.key,
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required this.viewModel,
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});
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|
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final SearchFormViewModel viewModel;
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@override
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Widget build(BuildContext context) {
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return Padding(
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padding: EdgeInsets.only(
|
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top: Dimens.paddingVertical,
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left: Dimens.of(context).paddingScreenHorizontal,
|
||||
right: Dimens.of(context).paddingScreenHorizontal,
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),
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child: InkWell(
|
||||
borderRadius: BorderRadius.circular(16.0),
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onTap: () {
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showDateRangePicker(
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context: context,
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firstDate: DateTime.now(),
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lastDate: DateTime.now().add(const Duration(days: 365)),
|
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).then((dateRange) => viewModel.dateRange = dateRange);
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},
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child: Container(
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height: 64,
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||||
decoration: BoxDecoration(
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border: Border.all(color: AppColors.grey1),
|
||||
borderRadius: BorderRadius.circular(16.0),
|
||||
),
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child: Padding(
|
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padding: const EdgeInsets.symmetric(
|
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horizontal: Dimens.paddingHorizontal,
|
||||
),
|
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child: Row(
|
||||
mainAxisAlignment: MainAxisAlignment.spaceBetween,
|
||||
children: [
|
||||
Text(
|
||||
AppLocalization.of(context).when,
|
||||
style: Theme.of(context).textTheme.titleMedium,
|
||||
),
|
||||
ListenableBuilder(
|
||||
listenable: viewModel,
|
||||
builder: (context, _) {
|
||||
final dateRange = viewModel.dateRange;
|
||||
if (dateRange != null) {
|
||||
return Text(
|
||||
dateFormatStartEnd(dateRange),
|
||||
style: Theme.of(context).textTheme.bodyLarge,
|
||||
);
|
||||
} else {
|
||||
return Text(
|
||||
AppLocalization.of(context).addDates,
|
||||
style: Theme.of(context).inputDecorationTheme.hintStyle,
|
||||
);
|
||||
}
|
||||
},
|
||||
)
|
||||
],
|
||||
),
|
||||
),
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,105 @@
|
||||
// Copyright 2024 The Flutter team. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
import 'package:flutter/material.dart';
|
||||
|
||||
import '../../core/themes/colors.dart';
|
||||
import '../../core/themes/dimens.dart';
|
||||
import '../view_models/search_form_viewmodel.dart';
|
||||
|
||||
const String removeGuestsKey = 'remove-guests';
|
||||
const String addGuestsKey = 'add-guests';
|
||||
|
||||
/// Number of guests selection form
|
||||
///
|
||||
/// Users can tap the Plus and Minus icons to increase or decrease
|
||||
/// the number of guests.
|
||||
class SearchFormGuests extends StatelessWidget {
|
||||
const SearchFormGuests({
|
||||
super.key,
|
||||
required this.viewModel,
|
||||
});
|
||||
|
||||
final SearchFormViewModel viewModel;
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return Padding(
|
||||
padding: EdgeInsets.only(
|
||||
top: Dimens.paddingVertical,
|
||||
left: Dimens.of(context).paddingScreenHorizontal,
|
||||
right: Dimens.of(context).paddingScreenHorizontal,
|
||||
),
|
||||
child: Container(
|
||||
height: 64,
|
||||
decoration: BoxDecoration(
|
||||
border: Border.all(color: AppColors.grey1),
|
||||
borderRadius: BorderRadius.circular(16.0),
|
||||
),
|
||||
child: Padding(
|
||||
padding: const EdgeInsets.symmetric(
|
||||
horizontal: Dimens.paddingHorizontal,
|
||||
),
|
||||
child: Row(
|
||||
mainAxisAlignment: MainAxisAlignment.spaceBetween,
|
||||
children: [
|
||||
Text(
|
||||
'Who',
|
||||
style: Theme.of(context).textTheme.titleMedium,
|
||||
),
|
||||
_QuantitySelector(viewModel),
|
||||
],
|
||||
),
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
class _QuantitySelector extends StatelessWidget {
|
||||
const _QuantitySelector(this.viewModel);
|
||||
|
||||
final SearchFormViewModel viewModel;
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return SizedBox(
|
||||
width: 90,
|
||||
child: Row(
|
||||
mainAxisAlignment: MainAxisAlignment.spaceBetween,
|
||||
children: [
|
||||
InkWell(
|
||||
key: const ValueKey(removeGuestsKey),
|
||||
onTap: () {
|
||||
viewModel.guests--;
|
||||
},
|
||||
child: const Icon(
|
||||
Icons.remove_circle_outline,
|
||||
color: AppColors.grey3,
|
||||
),
|
||||
),
|
||||
ListenableBuilder(
|
||||
listenable: viewModel,
|
||||
builder: (context, _) => Text(
|
||||
viewModel.guests.toString(),
|
||||
style: viewModel.guests == 0
|
||||
? Theme.of(context).inputDecorationTheme.hintStyle
|
||||
: Theme.of(context).textTheme.bodyMedium,
|
||||
),
|
||||
),
|
||||
InkWell(
|
||||
key: const ValueKey(addGuestsKey),
|
||||
onTap: () {
|
||||
viewModel.guests++;
|
||||
},
|
||||
child: const Icon(
|
||||
Icons.add_circle_outline,
|
||||
color: AppColors.grey3,
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,65 @@
|
||||
// Copyright 2024 The Flutter team. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
import 'package:flutter/material.dart';
|
||||
import 'package:go_router/go_router.dart';
|
||||
|
||||
import '../../../routing/routes.dart';
|
||||
import '../../core/themes/dimens.dart';
|
||||
import '../../core/ui/search_bar.dart';
|
||||
import '../../results/widgets/results_screen.dart';
|
||||
import '../view_models/search_form_viewmodel.dart';
|
||||
import 'search_form_date.dart';
|
||||
import 'search_form_guests.dart';
|
||||
import 'search_form_continent.dart';
|
||||
import 'search_form_submit.dart';
|
||||
|
||||
/// Search form screen
|
||||
///
|
||||
/// Displays a search form with continent, date and guests selection.
|
||||
/// Tapping on the submit button opens the [ResultsScreen] screen
|
||||
/// passing the search options as query parameters.
|
||||
class SearchFormScreen extends StatelessWidget {
|
||||
const SearchFormScreen({
|
||||
super.key,
|
||||
required this.viewModel,
|
||||
});
|
||||
|
||||
final SearchFormViewModel viewModel;
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return PopScope(
|
||||
canPop: false,
|
||||
onPopInvokedWithResult: (didPop, r) {
|
||||
if (!didPop) context.go(Routes.home);
|
||||
},
|
||||
child: Scaffold(
|
||||
body: Column(
|
||||
crossAxisAlignment: CrossAxisAlignment.stretch,
|
||||
children: [
|
||||
SafeArea(
|
||||
top: true,
|
||||
bottom: false,
|
||||
child: Padding(
|
||||
padding: EdgeInsets.only(
|
||||
top: Dimens.of(context).paddingScreenVertical,
|
||||
left: Dimens.of(context).paddingScreenHorizontal,
|
||||
right: Dimens.of(context).paddingScreenHorizontal,
|
||||
bottom: Dimens.paddingVertical,
|
||||
),
|
||||
child: const AppSearchBar(),
|
||||
),
|
||||
),
|
||||
SearchFormContinent(viewModel: viewModel),
|
||||
SearchFormDate(viewModel: viewModel),
|
||||
SearchFormGuests(viewModel: viewModel),
|
||||
const Spacer(),
|
||||
SearchFormSubmit(viewModel: viewModel),
|
||||
],
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,100 @@
|
||||
// Copyright 2024 The Flutter team. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
import 'package:flutter/material.dart';
|
||||
import 'package:go_router/go_router.dart';
|
||||
|
||||
import '../../../routing/routes.dart';
|
||||
import '../../core/localization/applocalization.dart';
|
||||
import '../../core/themes/dimens.dart';
|
||||
import '../../results/widgets/results_screen.dart';
|
||||
import '../view_models/search_form_viewmodel.dart';
|
||||
|
||||
const String searchFormSubmitButtonKey = 'submit-button';
|
||||
|
||||
/// Search form submit button
|
||||
///
|
||||
/// The button is disabled when the form is data is incomplete.
|
||||
/// When tapped, it navigates to the [ResultsScreen]
|
||||
/// passing the search options as query parameters.
|
||||
class SearchFormSubmit extends StatefulWidget {
|
||||
const SearchFormSubmit({
|
||||
super.key,
|
||||
required this.viewModel,
|
||||
});
|
||||
|
||||
final SearchFormViewModel viewModel;
|
||||
|
||||
@override
|
||||
State<SearchFormSubmit> createState() => _SearchFormSubmitState();
|
||||
}
|
||||
|
||||
class _SearchFormSubmitState extends State<SearchFormSubmit> {
|
||||
@override
|
||||
void initState() {
|
||||
super.initState();
|
||||
widget.viewModel.updateItineraryConfig.addListener(_onResult);
|
||||
}
|
||||
|
||||
@override
|
||||
void didUpdateWidget(covariant SearchFormSubmit oldWidget) {
|
||||
oldWidget.viewModel.updateItineraryConfig.removeListener(_onResult);
|
||||
widget.viewModel.updateItineraryConfig.addListener(_onResult);
|
||||
super.didUpdateWidget(oldWidget);
|
||||
}
|
||||
|
||||
@override
|
||||
void dispose() {
|
||||
widget.viewModel.updateItineraryConfig.removeListener(_onResult);
|
||||
super.dispose();
|
||||
}
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return Padding(
|
||||
padding: EdgeInsets.only(
|
||||
top: Dimens.paddingVertical,
|
||||
left: Dimens.of(context).paddingScreenHorizontal,
|
||||
right: Dimens.of(context).paddingScreenHorizontal,
|
||||
bottom: Dimens.of(context).paddingScreenVertical,
|
||||
),
|
||||
child: ListenableBuilder(
|
||||
listenable: widget.viewModel,
|
||||
child: SizedBox(
|
||||
height: 52,
|
||||
child: Center(
|
||||
child: Text(AppLocalization.of(context).search),
|
||||
),
|
||||
),
|
||||
builder: (context, child) {
|
||||
return FilledButton(
|
||||
key: const ValueKey(searchFormSubmitButtonKey),
|
||||
onPressed: widget.viewModel.valid
|
||||
? widget.viewModel.updateItineraryConfig.execute
|
||||
: null,
|
||||
child: child,
|
||||
);
|
||||
},
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
void _onResult() {
|
||||
if (widget.viewModel.updateItineraryConfig.completed) {
|
||||
widget.viewModel.updateItineraryConfig.clearResult();
|
||||
context.go(Routes.results);
|
||||
}
|
||||
|
||||
if (widget.viewModel.updateItineraryConfig.error) {
|
||||
widget.viewModel.updateItineraryConfig.clearResult();
|
||||
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
|
||||
content: Text(AppLocalization.of(context).errorWhileSavingItinerary),
|
||||
action: SnackBarAction(
|
||||
label: AppLocalization.of(context).tryAgain,
|
||||
onPressed: widget.viewModel.updateItineraryConfig.execute,
|
||||
),
|
||||
));
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user