Added option to open FileViewer always with system dialog, enabled by default on iOS

lib/storage/base/settings.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:json_annotation/json_annotation.dart';
 
 import '../file/fileSettings.dart';
+import '../fileView/fileViewSettings.dart';
 import '../gradeAverages/gradeAveragesSettings.dart';
 import '../holidays/holidaysSettings.dart';
 import '../talk/talkSettings.dart';
@@ -23,6 +24,7 @@ class Settings {
   TalkSettings talkSettings;
   FileSettings fileSettings;
   HolidaysSettings holidaysSettings;
+  FileViewSettings fileViewSettings;
 
   Settings({
     required this.appTheme,
@@ -32,6 +34,7 @@ class Settings {
     required this.talkSettings,
     required this.fileSettings,
     required this.holidaysSettings,
+    required this.fileViewSettings,
   });
 
   static String _themeToJson(ThemeMode m) => m.name;

lib/storage/base/settings.g.dart

@@ -19,6 +19,8 @@ Settings _$SettingsFromJson(Map<String, dynamic> json) => Settings(
           FileSettings.fromJson(json['fileSettings'] as Map<String, dynamic>),
       holidaysSettings: HolidaysSettings.fromJson(
           json['holidaysSettings'] as Map<String, dynamic>),
+      fileViewSettings: FileViewSettings.fromJson(
+          json['fileViewSettings'] as Map<String, dynamic>),
     );
 
 Map<String, dynamic> _$SettingsToJson(Settings instance) => <String, dynamic>{
@@ -29,4 +31,5 @@ Map<String, dynamic> _$SettingsToJson(Settings instance) => <String, dynamic>{
       'talkSettings': instance.talkSettings.toJson(),
       'fileSettings': instance.fileSettings.toJson(),
       'holidaysSettings': instance.holidaysSettings.toJson(),
+      'fileViewSettings': instance.fileViewSettings.toJson(),
     };

lib/storage/base/settingsProvider.dart

@@ -1,6 +1,8 @@
 import 'dart:convert';
 import 'dart:developer';
+import 'dart:io';
 import 'package:flutter/material.dart';
+import 'package:marianum_mobile/storage/fileView/fileViewSettings.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 import '../../view/pages/files/files.dart';
@@ -100,6 +102,9 @@ class SettingsProvider extends ChangeNotifier {
         dismissedDisclaimer: false,
         showPastEvents: false,
       ),
+      fileViewSettings: FileViewSettings(
+        alwaysOpenExternally: Platform.isIOS,
+      ),
     );
   }
 }