126 lines
4.7 KiB
Dart
126 lines
4.7 KiB
Dart
import 'package:aves/model/source/collection_lens.dart';
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import 'package:aves/widgets/fullscreen/info/location_section.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/widgets.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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final Settings settings = Settings._private();
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typedef SettingsCallback = void Function(String key, dynamic oldValue, dynamic newValue);
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class Settings {
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static SharedPreferences _prefs;
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final ObserverList<SettingsCallback> _listeners = ObserverList<SettingsCallback>();
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Settings._private();
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// preferences
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static const collectionGroupFactorKey = 'collection_group_factor';
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static const collectionSortFactorKey = 'collection_sort_factor';
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static const collectionTileExtentKey = 'collection_tile_extent';
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static const infoMapStyleKey = 'info_map_style';
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static const infoMapZoomKey = 'info_map_zoom';
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static const catalogTimeZoneKey = 'catalog_time_zone';
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static const hasAcceptedTermsKey = 'has_accepted_terms';
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Future<void> init() async {
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_prefs = await SharedPreferences.getInstance();
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}
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Future<void> reset() {
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return _prefs.clear();
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}
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void addListener(SettingsCallback listener) => _listeners.add(listener);
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void removeListener(SettingsCallback listener) => _listeners.remove(listener);
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void notifyListeners(String key, dynamic oldValue, dynamic newValue) {
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debugPrint('$runtimeType notifyListeners key=$key, old=$oldValue, new=$newValue');
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if (_listeners != null) {
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final localListeners = _listeners.toList();
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for (final listener in localListeners) {
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try {
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if (_listeners.contains(listener)) {
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listener(key, oldValue, newValue);
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}
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} catch (exception, stack) {
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debugPrint('$runtimeType failed to notify listeners with exception=$exception\n$stack');
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}
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}
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}
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}
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EntryMapStyle get infoMapStyle => getEnumOrDefault(infoMapStyleKey, EntryMapStyle.stamenWatercolor, EntryMapStyle.values);
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set infoMapStyle(EntryMapStyle newValue) => setAndNotify(infoMapStyleKey, newValue.toString());
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double get infoMapZoom => _prefs.getDouble(infoMapZoomKey) ?? 12;
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set infoMapZoom(double newValue) => setAndNotify(infoMapZoomKey, newValue);
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String get catalogTimeZone => _prefs.getString(catalogTimeZoneKey) ?? '';
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set catalogTimeZone(String newValue) => setAndNotify(catalogTimeZoneKey, newValue);
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GroupFactor get collectionGroupFactor => getEnumOrDefault(collectionGroupFactorKey, GroupFactor.month, GroupFactor.values);
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set collectionGroupFactor(GroupFactor newValue) => setAndNotify(collectionGroupFactorKey, newValue.toString());
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SortFactor get collectionSortFactor => getEnumOrDefault(collectionSortFactorKey, SortFactor.date, SortFactor.values);
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set collectionSortFactor(SortFactor newValue) => setAndNotify(collectionSortFactorKey, newValue.toString());
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double get collectionTileExtent => _prefs.getDouble(collectionTileExtentKey) ?? 0;
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set collectionTileExtent(double newValue) => setAndNotify(collectionTileExtentKey, newValue);
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bool get hasAcceptedTerms => getBoolOrDefault(hasAcceptedTermsKey, false);
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set hasAcceptedTerms(bool newValue) => setAndNotify(hasAcceptedTermsKey, newValue);
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// convenience methods
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// ignore: avoid_positional_boolean_parameters
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bool getBoolOrDefault(String key, bool defaultValue) => _prefs.getKeys().contains(key) ? _prefs.getBool(key) : defaultValue;
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T getEnumOrDefault<T>(String key, T defaultValue, Iterable<T> values) {
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final valueString = _prefs.getString(key);
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for (final element in values) {
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if (element.toString() == valueString) {
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return element;
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}
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}
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return defaultValue;
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}
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List<T> getEnumListOrDefault<T>(String key, List<T> defaultValue, Iterable<T> values) {
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return _prefs.getStringList(key)?.map((s) => values.firstWhere((el) => el.toString() == s, orElse: () => null))?.where((el) => el != null)?.toList() ?? defaultValue;
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}
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void setAndNotify(String key, dynamic newValue) {
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var oldValue = _prefs.get(key);
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if (newValue == null) {
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_prefs.remove(key);
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} else if (newValue is String) {
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oldValue = _prefs.getString(key);
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_prefs.setString(key, newValue);
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} else if (newValue is List<String>) {
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oldValue = _prefs.getStringList(key);
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_prefs.setStringList(key, newValue);
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} else if (newValue is int) {
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oldValue = _prefs.getInt(key);
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_prefs.setInt(key, newValue);
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} else if (newValue is double) {
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oldValue = _prefs.getDouble(key);
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_prefs.setDouble(key, newValue);
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} else if (newValue is bool) {
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oldValue = _prefs.getBool(key);
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_prefs.setBool(key, newValue);
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}
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if (oldValue != newValue) {
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notifyListeners(key, oldValue, newValue);
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}
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}
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}
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