git-touch-android-ios-app/lib/models/code.dart

import 'package:flutter/foundation.dart';
import 'package:flutter_highlight/theme_map.dart';
import 'package:shared_preferences/shared_preferences.dart';

class CodeModel with ChangeNotifier {
  static const _kTheme = 'code-theme';
  static const _kFontSize = 'code-font-size';
  static const _kFontFamily = 'code-font-family';

  static var themes = themeMap.keys.toList();
  static const fontSizes = [12, 13, 14, 15, 16, 17, 18, 19, 20];
  static const fontFamilies = ['System'];

  String _theme = 'github';
  int _fontSize = 14;
  String _fontFamily = 'System';

  String get theme => _theme;
  int get fontSize => _fontSize;
  String get fontFamily => _fontFamily;

  init() async {
    var prefs = await SharedPreferences.getInstance();
    var vh = prefs.getString(_kTheme);
    var vs = prefs.getInt(_kFontSize);
    var vf = prefs.getString(_kFontFamily);

    print('read code: $vh, $vs, $vf');
    if (themeMap.keys.contains(vh)) {
      _theme = vh;
    }
    if (fontSizes.contains(vs)) {
      _fontSize = vs;
    }
    if (fontFamilies.contains(vf)) {
      _fontFamily = vf;
    }

    notifyListeners();
  }

  setTheme(String v) async {
    var prefs = await SharedPreferences.getInstance();

    await prefs.setString(_kTheme, v);
    print('write code theme: $v');

    _theme = v;
    notifyListeners();
  }

  setFontSize(int v) async {
    var prefs = await SharedPreferences.getInstance();

    await prefs.setInt(_kFontSize, v);
    print('write code font size: $v');

    _fontSize = v;
    notifyListeners();
  }

  setFontFamily(String v) async {
    var prefs = await SharedPreferences.getInstance();

    await prefs.setString(_kFontFamily, v);
    print('write code font family: $v');

    _fontFamily = v;
    notifyListeners();
  }
}