[mob][photos] Add logic to reload home gallery on toggling hide shared items from home gallery settings and also store the preference in local settings

mobile/lib/events/hide_shared_items_from_home_gallery_event.dart

@@ -0,0 +1,7 @@
+import "package:photos/events/event.dart";
+
+class HideSharedItemsFromHomeGalleryEvent extends Event {
+  final bool shouldHide;
+
+  HideSharedItemsFromHomeGalleryEvent(this.shouldHide);
+}

mobile/lib/ui/home/home_gallery_widget.dart

@@ -1,3 +1,5 @@
+import "dart:async";
+
 import 'package:flutter/material.dart';
 import 'package:photos/core/configuration.dart';
 import 'package:photos/core/event_bus.dart';
@@ -5,18 +7,21 @@ import 'package:photos/db/files_db.dart';
 import 'package:photos/events/backup_folders_updated_event.dart';
 import 'package:photos/events/files_updated_event.dart';
 import 'package:photos/events/force_reload_home_gallery_event.dart';
+import "package:photos/events/hide_shared_items_from_home_gallery_event.dart";
 import 'package:photos/events/local_photos_updated_event.dart';
 import 'package:photos/models/file_load_result.dart';
 import 'package:photos/models/gallery_type.dart';
 import 'package:photos/models/selected_files.dart';
+import "package:photos/service_locator.dart";
 import 'package:photos/services/collections_service.dart';
 import "package:photos/services/filter/db_filters.dart";
 import 'package:photos/ui/viewer/actions/file_selection_overlay_bar.dart';
 import 'package:photos/ui/viewer/gallery/gallery.dart';
 import "package:photos/ui/viewer/gallery/state/gallery_files_inherited_widget.dart";
 import "package:photos/ui/viewer/gallery/state/selection_state.dart";
+import "package:photos/utils/debouncer.dart";
 
-class HomeGalleryWidget extends StatelessWidget {
+class HomeGalleryWidget extends StatefulWidget {
   final Widget? header;
   final Widget? footer;
   final SelectedFiles selectedFiles;
@@ -28,10 +33,49 @@ class HomeGalleryWidget extends StatelessWidget {
     required this.selectedFiles,
   });
 
+  @override
+  State<HomeGalleryWidget> createState() => _HomeGalleryWidgetState();
+}
+
+class _HomeGalleryWidgetState extends State<HomeGalleryWidget> {
+  late final StreamSubscription<HideSharedItemsFromHomeGalleryEvent>
+      _hideSharedFilesFromHomeSubscription;
+  bool _shouldHideSharedItems = localSettings.hideSharedItemsFromHomeGallery;
+
+  /// This deboucner is to delay the UI update of the shared items toggle
+  /// since it's expensive (a new differnt key is used for the gallery
+  /// widget when hide is toggled), without which, causes the toggle button used
+  /// for it in settings to have janky animation.
+  final _hideSharedItemsToggleDebouncer = Debouncer(
+    const Duration(milliseconds: 500),
+  );
+
+  @override
+  void initState() {
+    super.initState();
+    _hideSharedFilesFromHomeSubscription =
+        Bus.instance.on<HideSharedItemsFromHomeGalleryEvent>().listen((event) {
+      localSettings.setHideSharedItemsFromHomeGallery(event.shouldHide);
+      _hideSharedItemsToggleDebouncer.run(() async {
+        setState(() {
+          _shouldHideSharedItems = event.shouldHide;
+        });
+      });
+    });
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    _hideSharedFilesFromHomeSubscription.cancel();
+    _hideSharedItemsToggleDebouncer.cancelDebounceTimer();
+  }
+
   @override
   Widget build(BuildContext context) {
     final double bottomSafeArea = MediaQuery.paddingOf(context).bottom;
     final gallery = Gallery(
+      key: ValueKey(_shouldHideSharedItems),
       asyncLoader: (creationStartTime, creationEndTime, {limit, asc}) async {
         final ownerID = Configuration.instance.getUserID();
         final hasSelectedAllForBackup =
@@ -61,6 +105,7 @@ class HomeGalleryWidget extends StatelessWidget {
             limit: limit,
             asc: asc,
             filterOptions: filterOptions,
+            applyOwnerCheck: _shouldHideSharedItems,
           );
         }
 
@@ -78,9 +123,9 @@ class HomeGalleryWidget extends StatelessWidget {
         Bus.instance.on<ForceReloadHomeGalleryEvent>(),
       ],
       tagPrefix: "home_gallery",
-      selectedFiles: selectedFiles,
-      header: header,
-      footer: footer,
+      selectedFiles: widget.selectedFiles,
+      header: widget.header,
+      footer: widget.footer,
       // scrollSafe area -> SafeArea + Preserver more + Nav Bar buttons
       scrollBottomSafeArea: bottomSafeArea + 180,
       reloadDebounceTime: const Duration(seconds: 2),
@@ -88,12 +133,12 @@ class HomeGalleryWidget extends StatelessWidget {
     );
     return GalleryFilesState(
       child: SelectionState(
-        selectedFiles: selectedFiles,
+        selectedFiles: widget.selectedFiles,
         child: Stack(
           alignment: Alignment.bottomCenter,
           children: [
             gallery,
-            FileSelectionOverlayBar(GalleryType.homepage, selectedFiles),
+            FileSelectionOverlayBar(GalleryType.homepage, widget.selectedFiles),
           ],
         ),
       ),

mobile/lib/ui/settings/advanced_settings_screen.dart

@@ -2,6 +2,8 @@ import "dart:async";
 
 import 'package:flutter/material.dart';
 import "package:photos/core/error-reporting/super_logging.dart";
+import "package:photos/core/event_bus.dart";
+import "package:photos/events/hide_shared_items_from_home_gallery_event.dart";
 import "package:photos/generated/l10n.dart";
 import "package:photos/service_locator.dart";
 import "package:photos/services/memories_service.dart";
@@ -189,6 +191,35 @@ class _AdvancedSettingsScreenState extends State<AdvancedSettingsScreen> {
                                 },
                               ),
                             ),
+                            const SizedBox(
+                              height: 24,
+                            ),
+                            MenuItemWidget(
+                              captionedTextWidget: const CaptionedTextWidget(
+                                title: "Hide shared items from home gallery",
+                              ),
+                              menuItemColor: colorScheme.fillFaint,
+                              singleBorderRadius: 8,
+                              alignCaptionedTextToLeft: true,
+                              trailingWidget: ToggleSwitchWidget(
+                                value: () => localSettings
+                                    .hideSharedItemsFromHomeGallery,
+                                onChanged: () async {
+                                  final prevSetting = localSettings
+                                      .hideSharedItemsFromHomeGallery;
+                                  await localSettings
+                                      .setHideSharedItemsFromHomeGallery(
+                                    !prevSetting,
+                                  );
+
+                                  Bus.instance.fire(
+                                    HideSharedItemsFromHomeGalleryEvent(
+                                      !prevSetting,
+                                    ),
+                                  );
+                                },
+                              ),
+                            ),
                           ],
                         ),
                       ],

mobile/lib/utils/local_settings.dart

@@ -20,6 +20,8 @@ class LocalSettings {
   static const onGuestViewKey = "on_guest_view";
   static const _hasConfiguredLinksInAppPermissionKey =
       "has_configured_links_in_app_permission";
+  static const _hideSharedItemsFromHomeGalleryTag =
+      "hide_shared_items_from_home_gallery";
 
   final SharedPreferences _prefs;
 
@@ -118,4 +120,11 @@ class LocalSettings {
     final result = _prefs.getBool(_hasConfiguredLinksInAppPermissionKey);
     return result ?? false;
   }
+
+  Future<void> setHideSharedItemsFromHomeGallery(bool value) async {
+    await _prefs.setBool(_hideSharedItemsFromHomeGalleryTag, value);
+  }
+
+  bool get hideSharedItemsFromHomeGallery =>
+      _prefs.getBool(_hideSharedItemsFromHomeGalleryTag) ?? false;
 }