harbour, notes: Use wakelock on note page

packages/harbour/lib/src/apps/notes/app.dart

@@ -9,11 +9,13 @@ import 'package:harbour/src/harbour.dart';
 import 'package:intersperse/intersperse.dart';
 import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
 import 'package:nextcloud/nextcloud.dart';
+import 'package:provider/provider.dart';
 import 'package:rxdart/rxdart.dart';
 import 'package:settings/settings.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:sort_box/sort_box.dart';
 import 'package:url_launcher/url_launcher_string.dart';
+import 'package:wakelock/wakelock.dart';
 
 part 'dialogs/create_note.dart';
 part 'dialogs/select_category.dart';

packages/harbour/lib/src/apps/notes/pages/note.dart

@@ -73,6 +73,9 @@ class _NotesNotePageState extends State<NotesNotePage> {
     });
 
     WidgetsBinding.instance.addPostFrameCallback((final _) {
+      if (Provider.of<HarbourPlatform>(context, listen: false).canUseWakelock) {
+        Wakelock.enable();
+      }
       if (widget.bloc.options.defaultNoteViewTypeOption.value == DefaultNoteViewType.edit ||
           widget.note.content!.isEmpty) {
         setState(() {
@@ -94,6 +97,10 @@ class _NotesNotePageState extends State<NotesNotePage> {
     return WillPopScope(
       onWillPop: () async {
         _update();
+
+        if (Provider.of<HarbourPlatform>(context, listen: false).canUseWakelock) {
+          await Wakelock.disable();
+        }
         return true;
       },
       child: Scaffold(