Nils-Johan Gynther
43 lines
1.6 KiB
Dart
43 lines
1.6 KiB
Dart
import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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enum RecipesViewMode { grid, list }
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class RecipesViewNotifier extends AsyncNotifier<({RecipesViewMode mode, int columns})> {
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static const _modeKey = 'recipes_view_mode';
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static const _columnsKey = 'recipes_grid_columns';
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@override
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Future<({RecipesViewMode mode, int columns})> build() async {
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final prefs = await SharedPreferences.getInstance();
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final mode = RecipesViewMode.values[prefs.getInt(_modeKey) ?? 0];
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final columns = prefs.getInt(_columnsKey) ?? 2;
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return (mode: mode, columns: columns);
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}
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Future<void> toggleMode() async {
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final prefs = await SharedPreferences.getInstance();
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final current = state.maybeWhen(
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data: (v) => v,
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orElse: () => (mode: RecipesViewMode.grid, columns: 2),
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);
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final newMode = current.mode == RecipesViewMode.grid ? RecipesViewMode.list : RecipesViewMode.grid;
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await prefs.setInt(_modeKey, newMode.index);
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state = AsyncData((mode: newMode, columns: current.columns));
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}
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Future<void> setColumns(int columns) async {
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final prefs = await SharedPreferences.getInstance();
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final current = state.maybeWhen(
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data: (v) => v,
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orElse: () => (mode: RecipesViewMode.grid, columns: 2),
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);
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await prefs.setInt(_columnsKey, columns);
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state = AsyncData((mode: current.mode, columns: columns));
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}
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}
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final recipesViewProvider =
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AsyncNotifierProvider<RecipesViewNotifier, ({RecipesViewMode mode, int columns})>(
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RecipesViewNotifier.new);
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