51 lines
1.2 KiB
Dart
51 lines
1.2 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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class ThemeProvider extends ChangeNotifier {
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static const String _themeKey = 'theme_mode';
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ThemeMode _themeMode = ThemeMode.system;
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ThemeMode get theme => _themeMode;
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ThemeProvider() {
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_loadTheme();
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}
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Future<void> _loadTheme() async {
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final prefs = await SharedPreferences.getInstance();
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final themeName = prefs.getString(_themeKey) ?? 'system';
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_themeMode = _themeFromString(themeName);
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notifyListeners();
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}
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Future<void> setTheme(ThemeMode mode) async {
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_themeMode = mode;
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notifyListeners();
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final prefs = await SharedPreferences.getInstance();
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await prefs.setString(_themeKey, _themeToString(mode));
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}
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String _themeToString(ThemeMode mode) {
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switch (mode) {
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case ThemeMode.light:
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return 'light';
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case ThemeMode.dark:
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return 'dark';
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case ThemeMode.system:
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return 'system';
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}
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}
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ThemeMode _themeFromString(String theme) {
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switch (theme) {
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case 'light':
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return ThemeMode.light;
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case 'dark':
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return ThemeMode.dark;
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case 'system':
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default:
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return ThemeMode.system;
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}
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}
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} |