leaks: overlay entry review, change notifier mixin creation event

lib/model/favourites.dart

@@ -12,7 +12,9 @@ final Favourites favourites = Favourites._private();
 class Favourites with ChangeNotifier {
   Set<FavouriteRow> _rows = {};
 
-  Favourites._private();
+  Favourites._private() {
+    if (kFlutterMemoryAllocationsEnabled) ChangeNotifier.maybeDispatchObjectCreation(this);
+  }
 
   Future<void> init() async {
     _rows = await localMediaDb.loadAllFavourites();

lib/model/highlight.dart

@@ -5,6 +5,10 @@ import 'package:flutter/painting.dart';
 class HighlightInfo extends ChangeNotifier {
   final EventBus eventBus = EventBus();
 
+  HighlightInfo() {
+    if (kFlutterMemoryAllocationsEnabled) ChangeNotifier.maybeDispatchObjectCreation(this);
+  }
+
   void trackItem<T>(
     T? item, {
     TrackPredicate? predicate,

lib/model/query.dart

@@ -9,6 +9,7 @@ class Query extends ChangeNotifier {
   final StreamController<bool> _enabledStreamController = StreamController.broadcast();
 
   Query({required bool enabled, required String? initialValue}) {
+    if (kFlutterMemoryAllocationsEnabled) ChangeNotifier.maybeDispatchObjectCreation(this);
     _enabled = enabled;
     if (initialValue != null && initialValue.isNotEmpty) {
       _enabled = true;

lib/model/selection.dart

@@ -9,6 +9,10 @@ class Selection<T> extends ChangeNotifier {
 
   Set<T> get selectedItems => _selectedItems;
 
+  Selection() {
+    if (kFlutterMemoryAllocationsEnabled) ChangeNotifier.maybeDispatchObjectCreation(this);
+  }
+
   void browse() {
     if (!_isSelecting) return;
     _isSelecting = false;

lib/model/settings/settings.dart

@@ -33,8 +33,8 @@ import 'package:aves_utils/aves_utils.dart';
 import 'package:aves_video/aves_video.dart';
 import 'package:collection/collection.dart';
 import 'package:device_info_plus/device_info_plus.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
-import 'package:flutter/widgets.dart';
 import 'package:latlong2/latlong.dart';
 
 final Settings settings = Settings._private();
@@ -56,7 +56,9 @@ class Settings with ChangeNotifier, SettingsAccess, AppSettings, DisplaySettings
   @override
   SettingsStore get store => settingsStore;
 
-  Settings._private();
+  Settings._private() {
+    if (kFlutterMemoryAllocationsEnabled) ChangeNotifier.maybeDispatchObjectCreation(this);
+  }
 
   Future<void> init({required bool monitorPlatformSettings}) async {
     await store.init();

lib/model/source/collection_lens.dart

@@ -59,6 +59,7 @@ class CollectionLens with ChangeNotifier {
         sectionFactor = settings.collectionSectionFactor,
         sortFactor = settings.collectionSortFactor,
         sortReverse = settings.collectionSortReverse {
+    if (kFlutterMemoryAllocationsEnabled) ChangeNotifier.maybeDispatchObjectCreation(this);
     id ??= hashCode;
     if (listenToSource) {
       final sourceEvents = source.eventBus;

lib/model/vaults/vaults.dart

@@ -8,6 +8,7 @@ import 'package:aves/model/vaults/details.dart';
 import 'package:aves/services/common/services.dart';
 import 'package:aves_screen_state/aves_screen_state.dart';
 import 'package:collection/collection.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 import 'package:provider/provider.dart';
 
@@ -20,7 +21,9 @@ class Vaults extends ChangeNotifier {
 
   static const _fileScheme = 'file';
 
-  Vaults._private();
+  Vaults._private() {
+    if (kFlutterMemoryAllocationsEnabled) ChangeNotifier.maybeDispatchObjectCreation(this);
+  }
 
   Future<void> init() async {
     _rows = await localMediaDb.loadAllVaults();

lib/widgets/common/action_controls/quick_choosers/common/button.dart

@@ -99,12 +99,10 @@ abstract class ChooserQuickButtonState<T extends ChooserQuickButton<U>, U> exten
   }
 
   void _clearChooserOverlayEntry() {
-    final overlayEntry = _chooserOverlayEntry;
+    _chooserOverlayEntry
+      ?..remove()
+      ..dispose();
     _chooserOverlayEntry = null;
-    if (overlayEntry != null) {
-      overlayEntry.remove();
-      overlayEntry.dispose();
-    }
   }
 
   void _showChooser(LongPressStartDetails details) {

lib/widgets/common/fx/blurred.dart

@@ -7,6 +7,8 @@ final _filter = ImageFilter.blur(sigmaX: 4, sigmaY: 4);
 // as it yields performance issues when there are other layers on top
 final _identity = ImageFilter.matrix(Matrix4.identity().storage);
 
+// TODO TLAD [impeller] use `BackdropKey`
+
 class BlurredRect extends StatelessWidget {
   final bool enabled;
   final Widget child;

lib/widgets/common/grid/scaling.dart

@@ -196,12 +196,10 @@ class _GridScaleGestureDetectorState<T> extends State<GridScaleGestureDetector<T
     _scaledSizeNotifier!.dispose();
     _scaledSizeNotifier = null;
 
-    final overlayEntry = _overlayEntry;
+    _overlayEntry
+      ?..remove()
+      ..dispose();
     _overlayEntry = null;
-    if (overlayEntry != null) {
-      overlayEntry.remove();
-      overlayEntry.dispose();
-    }
 
     _applyingScale = true;
     final tileExtentController = context.read<TileExtentController>();

lib/widgets/debug/general.dart

@@ -47,12 +47,10 @@ class _DebugGeneralSectionState extends State<DebugGeneralSection> with Automati
         SwitchListTile(
           value: _taskQueueOverlayEntry != null,
           onChanged: (v) {
-            final overlayEntry = _taskQueueOverlayEntry;
+            _taskQueueOverlayEntry
+              ?..remove()
+              ..dispose();
             _taskQueueOverlayEntry = null;
-            if (overlayEntry != null) {
-              overlayEntry.remove();
-              overlayEntry.dispose();
-            }
             if (v) {
               _taskQueueOverlayEntry = OverlayEntry(
                 builder: (context) => const DebugTaskQueueOverlay(),
@@ -63,6 +61,20 @@ class _DebugGeneralSectionState extends State<DebugGeneralSection> with Automati
           },
           title: const Text('Show tasks overlay'),
         ),
+        ElevatedButton(
+          onPressed: () => LeakTracking.collectLeaks().then((leaks) {
+            const config = LeakDiagnosticConfig(
+              collectRetainingPathForNotGCed: true,
+              collectStackTraceOnStart: true,
+              collectStackTraceOnDisposal: true,
+            );
+            LeakTracking.phase = const PhaseSettings(
+              leakDiagnosticConfig: config,
+            );
+            debugPrint('Setup leak tracking phase with config=$config');
+          }),
+          child: const Text('Setup leak tracking phase'),
+        ),
         ElevatedButton(
           onPressed: () => LeakTracking.collectLeaks().then((leaks) {
             leaks.byType.forEach((type, reports) {

lib/widgets/viewer/visual/entry_page_view.dart

@@ -310,12 +310,10 @@ class _EntryPageViewState extends State<EntryPageView> with TickerProviderStateM
               onScaleEnd = (details) {
                 valueNotifier?.dispose();
 
-                final overlayEntry = _actionFeedbackOverlayEntry;
+                _actionFeedbackOverlayEntry
+                  ?..remove()
+                  ..dispose();
                 _actionFeedbackOverlayEntry = null;
-                if (overlayEntry != null) {
-                  overlayEntry.remove();
-                  overlayEntry.dispose();
-                }
               };
             }