Settings: Access it through the Provider

Make it a ChageNotifier and try to access it through the Provider
instead of like a global variable. This way, the state is better
managed and it'll be easier to split out Settings into smaller classes.

lib/app.dart

@@ -46,10 +46,11 @@ class JournalApp extends StatefulWidget {
     var appState = AppState(pref);
     appState.dumpToLog();
 
-    Log.i("Setting ${Settings.instance.toLoggableMap()}");
+    var settings = Settings.instance;
+    Log.i("Setting ${settings.toLoggableMap()}");
 
-    if (Settings.instance.collectUsageStatistics) {
+    if (settings.collectUsageStatistics) {
-      _enableAnalyticsIfPossible();
+      _enableAnalyticsIfPossible(settings);
     }
 
     if (appState.gitBaseDirectory.isEmpty) {
@@ -79,16 +80,19 @@ class JournalApp extends StatefulWidget {
       appState.save(pref);
     }
 
-    var app = ChangeNotifierProvider(
+    var app = ChangeNotifierProvider.value(
-      create: (_) {
+      value: settings,
-        return StateContainer(appState);
-      },
       child: ChangeNotifierProvider(
-        child: JournalApp(appState),
         create: (_) {
-          assert(appState.notesFolder != null);
+          return StateContainer(appState);
-          return appState.notesFolder;
         },
+        child: ChangeNotifierProvider(
+          child: JournalApp(appState),
+          create: (_) {
+            assert(appState.notesFolder != null);
+            return appState.notesFolder;
+          },
+        ),
       ),
     );
 
@@ -105,7 +109,7 @@ class JournalApp extends StatefulWidget {
     ));
   }
 
-  static void _enableAnalyticsIfPossible() async {
+  static void _enableAnalyticsIfPossible(Settings settings) async {
     JournalApp.isInDebugMode = foundation.kDebugMode;
 
     var isPhysicalDevice = true;
@@ -136,7 +140,7 @@ class JournalApp extends StatefulWidget {
     if (enabled) {
       JournalApp.analytics.logEvent(
         name: "settings",
-        parameters: Settings.instance.toLoggableMap(),
+        parameters: settings.toLoggableMap(),
       );
     }
   }
@@ -281,12 +285,13 @@ class _JournalAppState extends State<JournalApp> {
 
   MaterialApp buildApp(BuildContext context, ThemeData themeData) {
     var stateContainer = Provider.of<StateContainer>(context);
+    var settings = Provider.of<Settings>(context);
 
     var initialRoute = '/';
     if (!stateContainer.appState.onBoardingCompleted) {
       initialRoute = '/onBoarding';
     }
-    if (Settings.instance.homeScreen == SettingsHomeScreen.AllFolders) {
+    if (settings.homeScreen == SettingsHomeScreen.AllFolders) {
       initialRoute = '/folders';
     }
 

lib/editors/markdown_editor.dart

@@ -2,6 +2,8 @@ import 'dart:io';
 
 import 'package:flutter/material.dart';
 
+import 'package:provider/provider.dart';
+
 import 'package:gitjournal/core/note.dart';
 import 'package:gitjournal/editors/common.dart';
 import 'package:gitjournal/editors/disposable_change_notifier.dart';
@@ -129,7 +131,8 @@ class MarkdownEditorState extends State<MarkdownEditor>
 
     Widget body = editingMode ? editor : NoteViewer(note: note);
 
-    if (Settings.instance.experimentalMarkdownToolbar && editingMode) {
+    var settings = Provider.of<Settings>(context);
+    if (settings.experimentalMarkdownToolbar && editingMode) {
       body = Container(
         height: 600,
         child: Column(
@@ -165,19 +168,19 @@ class MarkdownEditorState extends State<MarkdownEditor>
   }
 
   void _switchMode() {
+    var settings = Provider.of<Settings>(context);
+
     setState(() {
       editingMode = !editingMode;
       switch (editingMode) {
         case true:
-          Settings.instance.markdownLastUsedView =
+          settings.markdownLastUsedView = SettingsMarkdownDefaultView.Edit;
-              SettingsMarkdownDefaultView.Edit;
           break;
         case false:
-          Settings.instance.markdownLastUsedView =
+          settings.markdownLastUsedView = SettingsMarkdownDefaultView.View;
-              SettingsMarkdownDefaultView.View;
           break;
       }
-      Settings.instance.save();
+      settings.save();
       _updateNote();
     });
   }

lib/editors/scaffold.dart

@@ -1,5 +1,7 @@
 import 'package:flutter/material.dart';
 
+import 'package:provider/provider.dart';
+
 import 'package:gitjournal/core/notes_folder_fs.dart';
 import 'package:gitjournal/editors/common.dart';
 import 'package:gitjournal/settings.dart';
@@ -46,7 +48,9 @@ class _EditorScaffoldState extends State<EditorScaffold> {
   }
 
   void _editorChanged() {
-    if (Settings.instance.zenMode && !hideUIElements) {
+    var settings = Provider.of<Settings>(context);
+
+    if (settings.zenMode && !hideUIElements) {
       setState(() {
         hideUIElements = true;
       });
@@ -55,11 +59,13 @@ class _EditorScaffoldState extends State<EditorScaffold> {
 
   @override
   Widget build(BuildContext context) {
+    var settings = Provider.of<Settings>(context);
+
     return Scaffold(
       body: GestureDetector(
         behavior: HitTestBehavior.translucent,
         onTap: () {
-          if (Settings.instance.zenMode) {
+          if (settings.zenMode) {
             setState(() {
               hideUIElements = false;
             });
@@ -84,13 +90,13 @@ class _EditorScaffoldState extends State<EditorScaffold> {
                 editorState: widget.editorState,
                 parentFolder: widget.parentFolder,
                 allowEdits: widget.allowEdits,
-                zenMode: Settings.instance.zenMode,
+                zenMode: settings.zenMode,
                 onZenModeChanged: () {
                   setState(() {
-                    Settings.instance.zenMode = !Settings.instance.zenMode;
+                    settings.zenMode = !settings.zenMode;
-                    Settings.instance.save();
+                    settings.save();
 
-                    if (Settings.instance.zenMode) {
+                    if (settings.zenMode) {
                       hideUIElements = true;
                     }
                   });

lib/screens/debug_screen.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 
 import 'package:easy_localization/easy_localization.dart';
+import 'package:provider/provider.dart';
 
 import 'package:gitjournal/settings.dart';
 import 'package:gitjournal/utils/logger.dart';
@@ -12,7 +13,6 @@ class DebugScreen extends StatefulWidget {
 
 class _DebugScreenState extends State<DebugScreen> {
   ScrollController _controller = ScrollController();
-  String filterLevel = Settings.instance.debugLogLevel;
 
   List<LogMessage> _logs;
 
@@ -79,6 +79,9 @@ class _DebugScreenState extends State<DebugScreen> {
   }
 
   bool _shouldDisplay(LogMessage msg) {
+    var settings = Provider.of<Settings>(context);
+    var filterLevel = settings.debugLogLevel;
+
     if (filterLevel == null || filterLevel.isEmpty) {
       return true;
     }
@@ -196,6 +199,9 @@ class _DebugScreenState extends State<DebugScreen> {
   }
 
   void _showFilterSelection() async {
+    var settings = Provider.of<Settings>(context);
+    var filterLevel = settings.debugLogLevel;
+
     var dialog = AlertDialog(
       title: Text(tr('settings.debug.levels')),
       content: Column(
@@ -211,12 +217,8 @@ class _DebugScreenState extends State<DebugScreen> {
     );
     var l = await showDialog(context: context, builder: (context) => dialog);
     if (l != null) {
-      setState(() {
+      settings.debugLogLevel = l;
-        Settings.instance.debugLogLevel = l;
+      settings.save();
-        Settings.instance.save();
-
-        filterLevel = l;
-      });
     }
   }
 }

lib/screens/settings_editors.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 
 import 'package:easy_localization/easy_localization.dart';
+import 'package:provider/provider.dart';
 
 import 'package:gitjournal/core/notes_folder_fs.dart';
 import 'package:gitjournal/screens/settings_screen.dart';
@@ -18,9 +19,8 @@ class SettingsEditorsScreen extends StatefulWidget {
 class SettingsEditorsScreenState extends State<SettingsEditorsScreen> {
   @override
   Widget build(BuildContext context) {
-    var settings = Settings.instance;
+    var settings = Provider.of<Settings>(context);
-    var defaultNewFolder =
+    var defaultNewFolder = settings.journalEditordefaultNewNoteFolderSpec;
-        Settings.instance.journalEditordefaultNewNoteFolderSpec;
     if (defaultNewFolder.isEmpty) {
       defaultNewFolder = tr("rootFolder");
     } else {
@@ -28,8 +28,8 @@ class SettingsEditorsScreenState extends State<SettingsEditorsScreen> {
         setState(() {
           defaultNewFolder = tr("rootFolder");
 
-          Settings.instance.journalEditordefaultNewNoteFolderSpec = "";
+          settings.journalEditordefaultNewNoteFolderSpec = "";
-          Settings.instance.save();
+          settings.save();
         });
       }
     }
@@ -42,8 +42,8 @@ class SettingsEditorsScreenState extends State<SettingsEditorsScreen> {
             SettingsEditorType.options.map((f) => f.toPublicString()).toList(),
         onChange: (String publicStr) {
           var val = SettingsEditorType.fromPublicString(publicStr);
-          Settings.instance.defaultEditor = val;
+          settings.defaultEditor = val;
-          Settings.instance.save();
+          settings.save();
           setState(() {});
         },
       ),
@@ -56,8 +56,8 @@ class SettingsEditorsScreenState extends State<SettingsEditorsScreen> {
             .toList(),
         onChange: (String publicStr) {
           var val = SettingsMarkdownDefaultView.fromPublicString(publicStr);
-          Settings.instance.markdownDefaultView = val;
+          settings.markdownDefaultView = val;
-          Settings.instance.save();
+          settings.save();
           setState(() {});
         },
       ),
@@ -72,9 +72,9 @@ class SettingsEditorsScreenState extends State<SettingsEditorsScreen> {
               builder: (context) => FolderSelectionDialog(),
             );
 
-            Settings.instance.journalEditordefaultNewNoteFolderSpec =
+            settings.journalEditordefaultNewNoteFolderSpec =
                 destFolder != null ? destFolder.pathSpec() : "";
-            Settings.instance.save();
+            settings.save();
             setState(() {});
           },
         ),

lib/screens/settings_git_remote.dart

@@ -39,7 +39,7 @@ class _GitRemoteSettingsScreenState extends State<GitRemoteSettingsScreen> {
   @override
   Widget build(BuildContext context) {
     var textTheme = Theme.of(context).textTheme;
-    var settings = Settings.instance;
+    var settings = Provider.of<Settings>(context);
 
     var body = Column(
       children: <Widget>[
@@ -72,8 +72,8 @@ class _GitRemoteSettingsScreenState extends State<GitRemoteSettingsScreen> {
               .toList(),
           onChange: (String publicStr) {
             var val = RemoteSyncFrequency.fromPublicString(publicStr);
-            Settings.instance.remoteSyncFrequency = val;
+            settings.remoteSyncFrequency = val;
-            Settings.instance.save();
+            settings.save();
             setState(() {});
           },
         ),

lib/screens/settings_images.dart

@@ -17,14 +17,14 @@ class SettingsImagesScreen extends StatefulWidget {
 class SettingsImagesScreenState extends State<SettingsImagesScreen> {
   @override
   Widget build(BuildContext context) {
-    var settings = Settings.instance;
+    var settings = Provider.of<Settings>(context);
     var folder = Provider.of<NotesFolderFS>(context)
         .getFolderWithSpec(settings.imageLocationSpec);
 
     // If the Custom Folder specified no longer exists
     if (settings.imageLocationSpec != "." && folder == null) {
-      Settings.instance.imageLocationSpec = ".";
+      settings.imageLocationSpec = ".";
-      Settings.instance.save();
+      settings.save();
     }
 
     var sameFolder = tr("settings.images.currentFolder");
@@ -38,11 +38,11 @@ class SettingsImagesScreenState extends State<SettingsImagesScreen> {
         options: [sameFolder, customFolder],
         onChange: (String publicStr) {
           if (publicStr == sameFolder) {
-            Settings.instance.imageLocationSpec = ".";
+            settings.imageLocationSpec = ".";
           } else {
-            Settings.instance.imageLocationSpec = "";
+            settings.imageLocationSpec = "";
           }
-          Settings.instance.save();
+          settings.save();
           setState(() {});
         },
       ),
@@ -56,9 +56,9 @@ class SettingsImagesScreenState extends State<SettingsImagesScreen> {
               builder: (context) => FolderSelectionDialog(),
             );
 
-            Settings.instance.imageLocationSpec =
+            settings.imageLocationSpec =
                 destFolder != null ? destFolder.pathSpec() : "";
-            Settings.instance.save();
+            settings.save();
             setState(() {});
           },
         ),

lib/screens/settings_note_metadata.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 
 import 'package:easy_localization/easy_localization.dart';
+import 'package:provider/provider.dart';
 
 import 'package:gitjournal/core/md_yaml_doc.dart';
 import 'package:gitjournal/core/md_yaml_doc_codec.dart';
@@ -23,6 +24,7 @@ class _NoteMetadataSettingsScreenState
   @override
   Widget build(BuildContext context) {
     var textTheme = Theme.of(context).textTheme;
+    var settings = Provider.of<Settings>(context);
 
     var note = Note(null, "fileName.md");
     note.title = tr("settings.noteMetaData.exampleTitle");
@@ -51,14 +53,14 @@ class _NoteMetadataSettingsScreenState
         const Divider(),
         SwitchListTile(
           title: Text(tr("settings.noteMetaData.enableHeader")),
-          value: Settings.instance.yamlHeaderEnabled,
+          value: settings.yamlHeaderEnabled,
           onChanged: (bool newVal) {
             setState(() {
-              Settings.instance.yamlHeaderEnabled = newVal;
+              settings.yamlHeaderEnabled = newVal;
               if (newVal == false) {
-                Settings.instance.saveTitleInH1 = true;
+                settings.saveTitleInH1 = true;
               }
-              Settings.instance.save();
+              settings.save();
             });
           },
         ),
@@ -71,14 +73,14 @@ class _NoteMetadataSettingsScreenState
               "lastmodified",
               "lastmod",
             ],
-            currentOption: Settings.instance.yamlModifiedKey,
+            currentOption: settings.yamlModifiedKey,
             onChange: (String newVal) {
               setState(() {
-                Settings.instance.yamlModifiedKey = newVal;
+                settings.yamlModifiedKey = newVal;
-                Settings.instance.save();
+                settings.save();
               });
             },
-            enabled: Settings.instance.yamlHeaderEnabled,
+            enabled: settings.yamlHeaderEnabled,
           ),
         ),
         ProOverlay(
@@ -88,14 +90,14 @@ class _NoteMetadataSettingsScreenState
               "created",
               "date",
             ],
-            currentOption: Settings.instance.yamlCreatedKey,
+            currentOption: settings.yamlCreatedKey,
             onChange: (String newVal) {
               setState(() {
-                Settings.instance.yamlCreatedKey = newVal;
+                settings.yamlCreatedKey = newVal;
-                Settings.instance.save();
+                settings.save();
               });
             },
-            enabled: Settings.instance.yamlHeaderEnabled,
+            enabled: settings.yamlHeaderEnabled,
           ),
         ),
         ProOverlay(
@@ -105,14 +107,14 @@ class _NoteMetadataSettingsScreenState
               "tags",
               "categories",
             ],
-            currentOption: Settings.instance.yamlTagsKey,
+            currentOption: settings.yamlTagsKey,
             onChange: (String newVal) {
               setState(() {
-                Settings.instance.yamlTagsKey = newVal;
+                settings.yamlTagsKey = newVal;
-                Settings.instance.save();
+                settings.save();
               });
             },
-            enabled: Settings.instance.yamlHeaderEnabled,
+            enabled: settings.yamlHeaderEnabled,
           ),
         ),
         ProOverlay(
@@ -120,17 +122,17 @@ class _NoteMetadataSettingsScreenState
             title: tr("settings.noteMetaData.titleMetaData.title"),
             options: [
               tr("settings.noteMetaData.titleMetaData.fromH1"),
-              if (Settings.instance.yamlHeaderEnabled)
+              if (settings.yamlHeaderEnabled)
                 tr("settings.noteMetaData.titleMetaData.fromYaml"),
             ],
-            currentOption: Settings.instance.saveTitleInH1
+            currentOption: settings.saveTitleInH1
                 ? tr("settings.noteMetaData.titleMetaData.fromH1")
                 : tr("settings.noteMetaData.titleMetaData.fromYaml"),
             onChange: (String newVal) {
               setState(() {
-                Settings.instance.saveTitleInH1 =
+                settings.saveTitleInH1 =
                     newVal == tr("settings.noteMetaData.titleMetaData.fromH1");
-                Settings.instance.save();
+                settings.save();
               });
             },
           ),

lib/screens/settings_screen.dart

@@ -54,11 +54,11 @@ class SettingsListState extends State<SettingsList> {
     var stateContainer = Provider.of<StateContainer>(context, listen: false);
 
     var remoteGitConfigured = stateContainer.appState.remoteGitRepoConfigured;
-    var settings = Settings.instance;
+    var settings = Provider.of<Settings>(context);
 
     var saveGitAuthor = (String gitAuthor) {
-      Settings.instance.gitAuthor = gitAuthor;
+      settings.gitAuthor = gitAuthor;
-      Settings.instance.save();
+      settings.save();
     };
 
     var gitAuthorForm = Form(
@@ -80,7 +80,7 @@ class SettingsListState extends State<SettingsList> {
         textInputAction: TextInputAction.done,
         onFieldSubmitted: saveGitAuthor,
         onSaved: saveGitAuthor,
-        initialValue: Settings.instance.gitAuthor,
+        initialValue: settings.gitAuthor,
       ),
       onChanged: () {
         if (!gitAuthorKey.currentState.validate()) return;
@@ -90,8 +90,8 @@ class SettingsListState extends State<SettingsList> {
     );
 
     var saveGitAuthorEmail = (String gitAuthorEmail) {
-      Settings.instance.gitAuthorEmail = gitAuthorEmail;
+      settings.gitAuthorEmail = gitAuthorEmail;
-      Settings.instance.save();
+      settings.save();
     };
     var gitAuthorEmailForm = Form(
       child: TextFormField(
@@ -121,7 +121,7 @@ class SettingsListState extends State<SettingsList> {
         textInputAction: TextInputAction.done,
         onFieldSubmitted: saveGitAuthorEmail,
         onSaved: saveGitAuthorEmail,
-        initialValue: Settings.instance.gitAuthorEmail,
+        initialValue: settings.gitAuthorEmail,
       ),
       onChanged: () {
         if (!gitAuthorEmailKey.currentState.validate()) return;
@@ -131,7 +131,7 @@ class SettingsListState extends State<SettingsList> {
     );
 
     var brightness = DynamicTheme.of(context).brightness;
-    var defaultNewFolder = Settings.instance.defaultNewNoteFolderSpec;
+    var defaultNewFolder = settings.defaultNewNoteFolderSpec;
     if (defaultNewFolder.isEmpty) {
       defaultNewFolder = tr("rootFolder");
     } else {
@@ -139,8 +139,8 @@ class SettingsListState extends State<SettingsList> {
         setState(() {
           defaultNewFolder = tr("rootFolder");
 
-          Settings.instance.defaultNewNoteFolderSpec = "";
+          settings.defaultNewNoteFolderSpec = "";
-          Settings.instance.save();
+          settings.save();
         });
       }
     }
@@ -165,8 +165,8 @@ class SettingsListState extends State<SettingsList> {
               .toList(),
           onChange: (String publicStr) {
             var s = SettingsHomeScreen.fromPublicString(publicStr);
-            Settings.instance.homeScreen = s;
+            settings.homeScreen = s;
-            Settings.instance.save();
+            settings.save();
             setState(() {});
           },
         ),
@@ -181,8 +181,8 @@ class SettingsListState extends State<SettingsList> {
             builder: (context) => FolderSelectionDialog(),
           );
           if (destFolder != null) {
-            Settings.instance.defaultNewNoteFolderSpec = destFolder.pathSpec();
+            settings.defaultNewNoteFolderSpec = destFolder.pathSpec();
-            Settings.instance.save();
+            settings.save();
             setState(() {});
           }
         },
@@ -222,8 +222,8 @@ class SettingsListState extends State<SettingsList> {
             NoteFileNameFormat.options.map((f) => f.toPublicString()).toList(),
         onChange: (String publicStr) {
           var format = NoteFileNameFormat.fromPublicString(publicStr);
-          Settings.instance.noteFileNameFormat = format;
+          settings.noteFileNameFormat = format;
-          Settings.instance.save();
+          settings.save();
           setState(() {});
         },
       ),
@@ -253,19 +253,19 @@ class SettingsListState extends State<SettingsList> {
       SettingsHeader(tr('settings.analytics')),
       SwitchListTile(
         title: Text(tr('settings.usageStats')),
-        value: Settings.instance.collectUsageStatistics,
+        value: settings.collectUsageStatistics,
         onChanged: (bool val) {
-          Settings.instance.collectUsageStatistics = val;
+          settings.collectUsageStatistics = val;
-          Settings.instance.save();
+          settings.save();
           setState(() {});
         },
       ),
       SwitchListTile(
         title: Text(tr('settings.crashReports')),
-        value: Settings.instance.collectCrashReports,
+        value: settings.collectCrashReports,
         onChanged: (bool val) {
-          Settings.instance.collectCrashReports = val;
+          settings.collectCrashReports = val;
-          Settings.instance.save();
+          settings.save();
           setState(() {});
         },
       ),

lib/settings.dart

@@ -1,3 +1,5 @@
+import 'package:flutter/material.dart';
+
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:uuid/uuid.dart';
 
@@ -5,7 +7,7 @@ import 'package:gitjournal/core/sorting_mode.dart';
 import 'package:gitjournal/folder_views/common.dart';
 import 'package:gitjournal/screens/note_editor.dart';
 
-class Settings {
+class Settings extends ChangeNotifier {
   // singleton
   static final Settings _singleton = Settings._internal();
   factory Settings() => _singleton;
@@ -203,6 +205,8 @@ class Settings {
     _setBool(pref, "saveTitleInH1", saveTitleInH1, defaultSet.saveTitleInH1);
 
     pref.setInt("settingsVersion", version);
+
+    notifyListeners();
   }
 
   Future<void> _setString(

lib/setup/screens.dart

@@ -514,10 +514,12 @@ class GitHostSetupScreenState extends State<GitHostSetupScreen> {
         folderPath: repoPath,
       );
       await repo.add('.gitignore');
+
+      var settings = Provider.of<Settings>(context, listen: false);
       await repo.commit(
         message: "Add gitignore file",
-        authorEmail: Settings.instance.gitAuthorEmail,
+        authorEmail: settings.gitAuthorEmail,
-        authorName: Settings.instance.gitAuthor,
+        authorName: settings.gitAuthor,
       );
     }
 

lib/widgets/app_drawer.dart

@@ -43,6 +43,7 @@ class AppDrawer extends StatelessWidget {
     }
 
     var divider = Row(children: <Widget>[const Expanded(child: Divider())]);
+    var settings = Provider.of<Settings>(context);
 
     return Drawer(
       child: ListView(
@@ -51,7 +52,7 @@ class AppDrawer extends StatelessWidget {
         children: <Widget>[
           _AppDrawerHeader(),
           if (setupGitButton != null) ...[setupGitButton, divider],
-          if (!Settings.instance.proMode)
+          if (!settings.proMode)
             _buildDrawerTile(
               context,
               icon: Icons.power,
@@ -65,7 +66,7 @@ class AppDrawer extends StatelessWidget {
                 );
               },
             ),
-          if (!Settings.instance.proMode) divider,
+          if (!settings.proMode) divider,
           _buildDrawerTile(
             context,
             icon: Icons.note,
@@ -80,7 +81,7 @@ class AppDrawer extends StatelessWidget {
             onTap: () => _navTopLevel(context, '/folders'),
             selected: currentRoute == "/folders",
           ),
-          if (Settings.instance.experimentalFs)
+          if (settings.experimentalFs)
             _buildDrawerTile(
               context,
               icon: FontAwesomeIcons.solidFolderOpen,

lib/widgets/pro_overlay.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 
 import 'package:easy_localization/easy_localization.dart';
+import 'package:provider/provider.dart';
 
 import 'package:gitjournal/settings.dart';
 
@@ -11,9 +12,11 @@ class ProOverlay extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    if (Settings.instance.proMode) {
+    var settings = Provider.of<Settings>(context);
+    if (settings.proMode) {
       return child;
     }
+
     return GestureDetector(
       behavior: HitTestBehavior.opaque,
       child: Banner(

lib/widgets/purchase_widget.dart

@@ -4,6 +4,7 @@ import 'dart:io';
 import 'package:flutter/material.dart';
 
 import 'package:in_app_purchase/in_app_purchase.dart';
+import 'package:provider/provider.dart';
 
 import 'package:gitjournal/analytics.dart';
 import 'package:gitjournal/iap.dart';
@@ -171,9 +172,10 @@ class _PurchaseWidgetState extends State<PurchaseWidget> {
   }
 
   void _deliverProduct(SubscriptionStatus status) {
-    Settings.instance.proMode = status.isPro;
+    var settings = Provider.of<Settings>(context);
-    Settings.instance.proExpirationDate = status.expiryDate.toIso8601String();
+    settings.proMode = status.isPro;
-    Settings.instance.save();
+    settings.proExpirationDate = status.expiryDate.toIso8601String();
+    settings.save();
 
     getAnalytics().logEvent(
       name: "purchase_screen_thank_you",