hash/== with equatable

android/app/build.gradle

@@ -55,6 +55,10 @@ android {
 
     defaultConfig {
         applicationId appId
+        // minSdkVersion constraints:
+        // - Flutter & other plugins: 16
+        // - google_maps_flutter v2.0.5: 20
+        // - Aves native: 19
         minSdkVersion 20
         targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()

lib/image_providers/app_icon_image_provider.dart

@@ -1,6 +1,7 @@
 import 'dart:ui' as ui show Codec;
 
 import 'package:aves/services/android_app_service.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
@@ -49,23 +50,18 @@ class AppIconImage extends ImageProvider<AppIconImageKey> {
   }
 }
 
-class AppIconImageKey {
+@immutable
+class AppIconImageKey extends Equatable {
   final String packageName;
   final double size;
   final double scale;
 
+  @override
+  List<Object?> get props => [packageName, size, scale];
+
   const AppIconImageKey({
     required this.packageName,
     required this.size,
     this.scale = 1.0,
   });
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is AppIconImageKey && other.packageName == packageName && other.size == size && other.scale == scale;
-  }
-
-  @override
-  int get hashCode => hashValues(packageName, size, scale);
 }

lib/image_providers/region_provider.dart

@@ -3,6 +3,7 @@ import 'dart:math';
 import 'dart:ui' as ui show Codec;
 
 import 'package:aves/services/services.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
@@ -62,7 +63,8 @@ class RegionProvider extends ImageProvider<RegionProviderKey> {
   void pause() => imageFileService.cancelRegion(key);
 }
 
-class RegionProviderKey {
+@immutable
+class RegionProviderKey extends Equatable {
   // do not store the entry as it is, because the key should be constant
   // but the entry attributes may change over time
   final String uri, mimeType;
@@ -72,6 +74,9 @@ class RegionProviderKey {
   final Rectangle<int> region;
   final Size imageSize;
 
+  @override
+  List<Object?> get props => [uri, pageId, rotationDegrees, isFlipped, sampleSize, region, imageSize];
+
   const RegionProviderKey({
     required this.uri,
     required this.mimeType,
@@ -83,24 +88,6 @@ class RegionProviderKey {
     required this.imageSize,
   });
 
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is RegionProviderKey && other.uri == uri && other.mimeType == mimeType && other.pageId == pageId && other.rotationDegrees == rotationDegrees && other.isFlipped == isFlipped && other.sampleSize == sampleSize && other.region == region && other.imageSize == imageSize;
-  }
-
-  @override
-  int get hashCode => hashValues(
-        uri,
-        mimeType,
-        pageId,
-        rotationDegrees,
-        isFlipped,
-        sampleSize,
-        region,
-        imageSize,
-      );
-
   @override
   String toString() => '$runtimeType#${shortHash(this)}{uri=$uri, mimeType=$mimeType, pageId=$pageId, rotationDegrees=$rotationDegrees, isFlipped=$isFlipped, sampleSize=$sampleSize, region=$region, imageSize=$imageSize}';
 }

lib/image_providers/thumbnail_provider.dart

@@ -1,6 +1,7 @@
 import 'dart:ui' as ui show Codec;
 
 import 'package:aves/services/services.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
@@ -63,7 +64,8 @@ class ThumbnailProvider extends ImageProvider<ThumbnailProviderKey> {
   void pause() => imageFileService.cancelThumbnail(key);
 }
 
-class ThumbnailProviderKey {
+@immutable
+class ThumbnailProviderKey extends Equatable {
   // do not store the entry as it is, because the key should be constant
   // but the entry attributes may change over time
   final String uri, mimeType;
@@ -73,6 +75,9 @@ class ThumbnailProviderKey {
   final int dateModifiedSecs;
   final double extent;
 
+  @override
+  List<Object?> get props => [uri, pageId, dateModifiedSecs, extent];
+
   const ThumbnailProviderKey({
     required this.uri,
     required this.mimeType,
@@ -83,20 +88,6 @@ class ThumbnailProviderKey {
     this.extent = 0,
   });
 
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is ThumbnailProviderKey && other.uri == uri && other.pageId == pageId && other.dateModifiedSecs == dateModifiedSecs && other.extent == extent;
-  }
-
-  @override
-  int get hashCode => hashValues(
-        uri,
-        pageId,
-        dateModifiedSecs,
-        extent,
-      );
-
   @override
   String toString() => '$runtimeType#${shortHash(this)}{uri=$uri, mimeType=$mimeType, pageId=$pageId, rotationDegrees=$rotationDegrees, isFlipped=$isFlipped, dateModifiedSecs=$dateModifiedSecs, extent=$extent}';
 }

lib/image_providers/uri_image_provider.dart

@@ -3,15 +3,20 @@ import 'dart:ui' as ui show Codec;
 
 import 'package:aves/services/services.dart';
 import 'package:aves/utils/pedantic.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
-class UriImage extends ImageProvider<UriImage> {
+@immutable
+class UriImage extends ImageProvider<UriImage> with EquatableMixin {
   final String uri, mimeType;
   final int? pageId, rotationDegrees, expectedContentLength;
   final bool isFlipped;
   final double scale;
 
+  @override
+  List<Object?> get props => [uri, pageId, rotationDegrees, isFlipped, scale];
+
   const UriImage({
     required this.uri,
     required this.mimeType,
@@ -71,22 +76,6 @@ class UriImage extends ImageProvider<UriImage> {
     }
   }
 
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is UriImage && other.uri == uri && other.mimeType == mimeType && other.rotationDegrees == rotationDegrees && other.isFlipped == isFlipped && other.pageId == pageId && other.scale == scale;
-  }
-
-  @override
-  int get hashCode => hashValues(
-        uri,
-        mimeType,
-        rotationDegrees,
-        isFlipped,
-        pageId,
-        scale,
-      );
-
   @override
   String toString() => '$runtimeType#${shortHash(this)}{uri=$uri, mimeType=$mimeType, rotationDegrees=$rotationDegrees, isFlipped=$isFlipped, pageId=$pageId, scale=$scale}';
 }

lib/model/covers.dart

@@ -3,6 +3,7 @@ import 'package:aves/model/filters/album.dart';
 import 'package:aves/model/filters/filters.dart';
 import 'package:aves/services/services.dart';
 import 'package:collection/collection.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
@@ -77,10 +78,13 @@ class Covers with ChangeNotifier {
 }
 
 @immutable
-class CoverRow {
+class CoverRow extends Equatable {
   final CollectionFilter filter;
   final int contentId;
 
+  @override
+  List<Object?> get props => [filter, contentId];
+
   const CoverRow({
     required this.filter,
     required this.contentId,
@@ -99,16 +103,4 @@ class CoverRow {
         'filter': filter.toJson(),
         'contentId': contentId,
       };
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is CoverRow && other.filter == filter && other.contentId == contentId;
-  }
-
-  @override
-  int get hashCode => hashValues(filter, contentId);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{filter=$filter, contentId=$contentId}';
 }

lib/model/favourites.dart

@@ -1,7 +1,7 @@
 import 'package:aves/model/entry.dart';
 import 'package:aves/services/services.dart';
 import 'package:collection/collection.dart';
-import 'package:flutter/foundation.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/widgets.dart';
 
 final Favourites favourites = Favourites._private();
@@ -62,10 +62,13 @@ class Favourites with ChangeNotifier {
 }
 
 @immutable
-class FavouriteRow {
+class FavouriteRow extends Equatable {
   final int contentId;
   final String path;
 
+  @override
+  List<Object?> get props => [contentId, path];
+
   const FavouriteRow({
     required this.contentId,
     required this.path,
@@ -82,16 +85,4 @@ class FavouriteRow {
         'contentId': contentId,
         'path': path,
       };
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is FavouriteRow && other.contentId == contentId && other.path == path;
-  }
-
-  @override
-  int get hashCode => hashValues(contentId, path);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{contentId=$contentId, path=$path}';
 }

lib/model/filters/album.dart

@@ -16,6 +16,9 @@ class AlbumFilter extends CollectionFilter {
   final String album;
   final String? displayName;
 
+  @override
+  List<Object?> get props => [album];
+
   const AlbumFilter(this.album, this.displayName);
 
   AlbumFilter.fromMap(Map<String, dynamic> json)
@@ -78,16 +81,4 @@ class AlbumFilter extends CollectionFilter {
   // key `album-{path}` is expected by test driver
   @override
   String get key => '$type-$album';
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is AlbumFilter && other.album == album;
-  }
-
-  @override
-  int get hashCode => hashValues(type, album);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{album=$album}';
 }

lib/model/filters/favourite.dart

@@ -10,6 +10,9 @@ class FavouriteFilter extends CollectionFilter {
 
   static const instance = FavouriteFilter._private();
 
+  @override
+  List<Object?> get props => [];
+
   const FavouriteFilter._private();
 
   @override
@@ -37,13 +40,4 @@ class FavouriteFilter extends CollectionFilter {
 
   @override
   String get key => type;
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is FavouriteFilter;
-  }
-
-  @override
-  int get hashCode => type.hashCode;
 }

lib/model/filters/filters.dart

@@ -11,10 +11,12 @@ import 'package:aves/model/filters/tag.dart';
 import 'package:aves/model/filters/type.dart';
 import 'package:aves/utils/color_utils.dart';
 import 'package:collection/collection.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
-abstract class CollectionFilter implements Comparable<CollectionFilter> {
+@immutable
+abstract class CollectionFilter extends Equatable implements Comparable<CollectionFilter> {
   static const List<String> categoryOrder = [
     QueryFilter.type,
     FavouriteFilter.type,
@@ -88,20 +90,15 @@ abstract class CollectionFilter implements Comparable<CollectionFilter> {
   }
 }
 
-class FilterGridItem<T extends CollectionFilter> {
+@immutable
+class FilterGridItem<T extends CollectionFilter> with EquatableMixin {
   final T filter;
   final AvesEntry? entry;
 
+  @override
+  List<Object?> get props => [filter, entry?.uri];
+
   const FilterGridItem(this.filter, this.entry);
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is FilterGridItem && other.filter == filter && other.entry == entry;
-  }
-
-  @override
-  int get hashCode => hashValues(filter, entry);
 }
 
 typedef EntryFilter = bool Function(AvesEntry);

lib/model/filters/location.dart

@@ -2,7 +2,6 @@ import 'package:aves/model/filters/filters.dart';
 import 'package:aves/theme/icons.dart';
 import 'package:aves/widgets/common/extensions/build_context.dart';
 import 'package:collection/collection.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 class LocationFilter extends CollectionFilter {
@@ -10,14 +9,17 @@ class LocationFilter extends CollectionFilter {
   static const locationSeparator = ';';
 
   final LocationLevel level;
-  String _location;
+  late final String _location;
-  String? _countryCode;
+  late final String? _countryCode;
-  late EntryFilter _test;
+  late final EntryFilter _test;
 
-  LocationFilter(this.level, this._location) {
+  @override
-    final split = _location.split(locationSeparator);
+  List<Object?> get props => [level, _location, _countryCode];
-    if (split.isNotEmpty) _location = split[0];
+
-    if (split.length > 1) _countryCode = split[1];
+  LocationFilter(this.level, String location) {
+    final split = location.split(locationSeparator);
+    _location = split.isNotEmpty ? split[0] : location;
+    _countryCode = split.length > 1 ? split[1] : null;
 
     if (_location.isEmpty) {
       _test = (entry) => !entry.hasGps;
@@ -75,18 +77,6 @@ class LocationFilter extends CollectionFilter {
   @override
   String get key => '$type-$level-$_location';
 
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is LocationFilter && other.level == level && other._location == _location;
-  }
-
-  @override
-  int get hashCode => hashValues(type, level, _location);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{level=$level, location=$_location}';
-
   // U+0041 Latin Capital letter A
   // U+1F1E6 🇦 REGIONAL INDICATOR SYMBOL LETTER A
   static const _countryCodeToFlagDiff = 0x1F1E6 - 0x0041;

lib/model/filters/mime.dart

@@ -3,20 +3,22 @@ import 'package:aves/ref/mime_types.dart';
 import 'package:aves/theme/icons.dart';
 import 'package:aves/utils/mime_utils.dart';
 import 'package:aves/widgets/common/extensions/build_context.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 class MimeFilter extends CollectionFilter {
   static const type = 'mime';
 
   final String mime;
-  late EntryFilter _test;
+  late final EntryFilter _test;
-  late String _label;
+  late final String _label;
-  late IconData _icon;
+  late final IconData _icon;
 
   static final image = MimeFilter(MimeTypes.anyImage);
   static final video = MimeFilter(MimeTypes.anyVideo);
 
+  @override
+  List<Object?> get props => [mime];
+
   MimeFilter(this.mime) {
     IconData? icon;
     var lowMime = mime.toLowerCase();
@@ -73,16 +75,4 @@ class MimeFilter extends CollectionFilter {
 
   @override
   String get key => '$type-$mime';
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is MimeFilter && other.mime == mime;
-  }
-
-  @override
-  int get hashCode => hashValues(type, mime);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{mime=$mime}';
 }

lib/model/filters/path.dart

@@ -1,12 +1,13 @@
 import 'package:aves/model/filters/filters.dart';
-import 'package:flutter/foundation.dart';
-import 'package:flutter/widgets.dart';
 
 class PathFilter extends CollectionFilter {
   static const type = 'path';
 
   final String path;
 
+  @override
+  List<Object?> get props => [path];
+
   const PathFilter(this.path);
 
   PathFilter.fromMap(Map<String, dynamic> json)
@@ -31,16 +32,4 @@ class PathFilter extends CollectionFilter {
 
   @override
   String get key => '$type-$path';
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is PathFilter && other.path == path;
-  }
-
-  @override
-  int get hashCode => hashValues(type, path);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{path=$path}';
 }

lib/model/filters/query.dart

@@ -12,7 +12,10 @@ class QueryFilter extends CollectionFilter {
 
   final String query;
   final bool colorful;
-  late EntryFilter _test;
+  late final EntryFilter _test;
+
+  @override
+  List<Object?> get props => [query];
 
   QueryFilter(this.query, {this.colorful = true}) {
     var upQuery = query.toUpperCase();
@@ -63,16 +66,4 @@ class QueryFilter extends CollectionFilter {
 
   @override
   String get key => '$type-$query';
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is QueryFilter && other.query == query;
-  }
-
-  @override
-  int get hashCode => hashValues(type, query);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{query=$query}';
 }

lib/model/filters/tag.dart

@@ -1,14 +1,16 @@
 import 'package:aves/model/filters/filters.dart';
 import 'package:aves/theme/icons.dart';
 import 'package:aves/widgets/common/extensions/build_context.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 class TagFilter extends CollectionFilter {
   static const type = 'tag';
 
   final String tag;
-  late EntryFilter _test;
+  late final EntryFilter _test;
+
+  @override
+  List<Object?> get props => [tag];
 
   TagFilter(this.tag) {
     if (tag.isEmpty) {
@@ -49,16 +51,4 @@ class TagFilter extends CollectionFilter {
 
   @override
   String get key => '$type-$tag';
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is TagFilter && other.tag == tag;
-  }
-
-  @override
-  int get hashCode => hashValues(type, tag);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{tag=$tag}';
 }

lib/model/filters/type.dart

@@ -1,7 +1,6 @@
 import 'package:aves/model/filters/filters.dart';
 import 'package:aves/theme/icons.dart';
 import 'package:aves/widgets/common/extensions/build_context.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 class TypeFilter extends CollectionFilter {
@@ -14,8 +13,8 @@ class TypeFilter extends CollectionFilter {
   static const _sphericalVideo = 'spherical_video'; // subset of videos
 
   final String itemType;
-  late EntryFilter _test;
+  late final EntryFilter _test;
-  late IconData _icon;
+  late final IconData _icon;
 
   static final animated = TypeFilter._private(_animated);
   static final geotiff = TypeFilter._private(_geotiff);
@@ -23,12 +22,19 @@ class TypeFilter extends CollectionFilter {
   static final panorama = TypeFilter._private(_panorama);
   static final sphericalVideo = TypeFilter._private(_sphericalVideo);
 
+  @override
+  List<Object?> get props => [itemType];
+
   TypeFilter._private(this.itemType) {
     switch (itemType) {
       case _animated:
         _test = (entry) => entry.isAnimated;
         _icon = AIcons.animated;
         break;
+      case _geotiff:
+        _test = (entry) => entry.isGeotiff;
+        _icon = AIcons.geo;
+        break;
       case _motionPhoto:
         _test = (entry) => entry.isMotionPhoto;
         _icon = AIcons.motionPhoto;
@@ -41,10 +47,6 @@ class TypeFilter extends CollectionFilter {
         _test = (entry) => entry.isVideo && entry.is360;
         _icon = AIcons.threeSixty;
         break;
-      case _geotiff:
-        _test = (entry) => entry.isGeotiff;
-        _icon = AIcons.geo;
-        break;
     }
   }
 
@@ -91,16 +93,4 @@ class TypeFilter extends CollectionFilter {
 
   @override
   String get key => '$type-$itemType';
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is TypeFilter && other.itemType == itemType;
-  }
-
-  @override
-  int get hashCode => hashValues(type, itemType);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{itemType=$itemType}';
 }

lib/model/source/section_keys.dart

@@ -1,41 +1,25 @@
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 
+@immutable
 class SectionKey {
   const SectionKey();
 }
 
-class EntryAlbumSectionKey extends SectionKey {
+class EntryAlbumSectionKey extends SectionKey with EquatableMixin {
   final String? directory;
 
+  @override
+  List<Object?> get props => [directory];
+
   const EntryAlbumSectionKey(this.directory);
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is EntryAlbumSectionKey && other.directory == directory;
-  }
-
-  @override
-  int get hashCode => directory.hashCode;
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{directory=$directory}';
 }
 
-class EntryDateSectionKey extends SectionKey {
+class EntryDateSectionKey extends SectionKey with EquatableMixin {
   final DateTime? date;
 
+  @override
+  List<Object?> get props => [date];
+
   const EntryDateSectionKey(this.date);
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is EntryDateSectionKey && other.date == date;
-  }
-
-  @override
-  int get hashCode => date.hashCode;
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{date=$date}';
 }

lib/services/image_op_events.dart

@@ -1,11 +1,15 @@
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 @immutable
-class ImageOpEvent {
+class ImageOpEvent extends Equatable {
   final bool success;
   final String uri;
 
+  @override
+  List<Object?> get props => [success, uri];
+
   const ImageOpEvent({
     required this.success,
     required this.uri,
@@ -17,18 +21,6 @@ class ImageOpEvent {
       uri: map['uri'],
     );
   }
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is ImageOpEvent && other.success == success && other.uri == uri;
-  }
-
-  @override
-  int get hashCode => hashValues(success, uri);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{success=$success, uri=$uri}';
 }
 
 class MoveOpEvent extends ImageOpEvent {
@@ -55,6 +47,9 @@ class MoveOpEvent extends ImageOpEvent {
 class ExportOpEvent extends MoveOpEvent {
   final int? pageId;
 
+  @override
+  List<Object?> get props => [success, uri, pageId];
+
   const ExportOpEvent({required bool success, required String uri, this.pageId, required Map newFields})
       : super(
           success: success,
@@ -70,16 +65,4 @@ class ExportOpEvent extends MoveOpEvent {
       newFields: map['newFields'] ?? {},
     );
   }
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is ExportOpEvent && other.success == success && other.uri == uri && other.pageId == pageId;
-  }
-
-  @override
-  int get hashCode => hashValues(success, uri, pageId);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{success=$success, uri=$uri, pageId=$pageId, newFields=$newFields}';
 }

lib/utils/android_file_utils.dart

@@ -3,6 +3,7 @@ import 'package:aves/services/services.dart';
 import 'package:aves/utils/change_notifier.dart';
 import 'package:aves/widgets/common/extensions/build_context.dart';
 import 'package:collection/collection.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
@@ -155,9 +156,12 @@ class StorageVolume {
 }
 
 @immutable
-class VolumeRelativeDirectory {
+class VolumeRelativeDirectory extends Equatable {
   final String volumePath, relativeDir;
 
+  @override
+  List<Object?> get props => [volumePath, relativeDir];
+
   const VolumeRelativeDirectory({
     required this.volumePath,
     required this.relativeDir,
@@ -187,13 +191,4 @@ class VolumeRelativeDirectory {
     final volume = androidFileUtils.storageVolumes.firstWhereOrNull((volume) => volume.path == volumePath);
     return volume?.getDescription(context) ?? volumePath;
   }
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is VolumeRelativeDirectory && other.volumePath == volumePath && other.relativeDir == relativeDir;
-  }
-
-  @override
-  int get hashCode => hashValues(volumePath, relativeDir);
 }

lib/utils/constants.dart

@@ -44,7 +44,6 @@ class Constants {
     Dependency(
       name: 'AndroidSVG',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/BigBadaboom/androidsvg/blob/master/LICENSE',
       sourceUrl: 'https://github.com/BigBadaboom/androidsvg',
     ),
     Dependency(
@@ -56,19 +55,16 @@ class Constants {
     Dependency(
       name: 'CWAC-Document',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/commonsguy/cwac-document/blob/master/LICENSE',
       sourceUrl: 'https://github.com/commonsguy/cwac-document',
     ),
     Dependency(
       name: 'Glide',
       license: 'Apache 2.0, BSD 2-Clause',
-      licenseUrl: 'https://github.com/bumptech/glide/blob/master/LICENSE',
       sourceUrl: 'https://github.com/bumptech/glide',
     ),
     Dependency(
       name: 'Metadata Extractor',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/drewnoakes/metadata-extractor/blob/master/LICENSE',
       sourceUrl: 'https://github.com/drewnoakes/metadata-extractor',
     ),
   ];
@@ -77,49 +73,44 @@ class Constants {
     Dependency(
       name: 'Connectivity Plus',
       license: 'BSD 3-Clause',
-      licenseUrl: 'https://github.com/fluttercommunity/plus_plugins/blob/main/packages/connectivity_plus/LICENSE',
+      licenseUrl: 'https://github.com/fluttercommunity/plus_plugins/blob/main/packages/connectivity_plus/connectivity_plus/LICENSE',
       sourceUrl: 'https://github.com/fluttercommunity/plus_plugins/tree/main/packages/connectivity_plus',
     ),
     Dependency(
       name: 'FlutterFire (Core, Crashlytics)',
       license: 'BSD 3-Clause',
-      licenseUrl: 'https://github.com/FirebaseExtended/flutterfire/blob/master/LICENSE',
       sourceUrl: 'https://github.com/FirebaseExtended/flutterfire',
     ),
     Dependency(
       name: 'fijkplayer (Aves fork)',
       license: 'MIT',
-      licenseUrl: 'https://github.com/deckerst/fijkplayer/blob/master/LICENSE',
       sourceUrl: 'https://github.com/deckerst/fijkplayer',
     ),
     Dependency(
       name: 'Google API Availability',
       license: 'MIT',
-      licenseUrl: 'https://github.com/Baseflow/flutter-google-api-availability/blob/master/LICENSE',
       sourceUrl: 'https://github.com/Baseflow/flutter-google-api-availability',
     ),
     Dependency(
       name: 'Google Maps for Flutter',
       license: 'BSD 3-Clause',
       licenseUrl: 'https://github.com/flutter/plugins/blob/master/packages/google_maps_flutter/google_maps_flutter/LICENSE',
-      sourceUrl: 'https://github.com/flutter/plugins/blob/master/packages/google_maps_flutter/google_maps_flutter',
+      sourceUrl: 'https://github.com/flutter/plugins/tree/master/packages/google_maps_flutter/google_maps_flutter',
     ),
     Dependency(
       name: 'Package Info Plus',
       license: 'BSD 3-Clause',
-      licenseUrl: 'https://github.com/fluttercommunity/plus_plugins/tree/main/packages/package_info_plus/LICENSE',
+      licenseUrl: 'https://github.com/fluttercommunity/plus_plugins/blob/main/packages/package_info_plus/package_info_plus/LICENSE',
       sourceUrl: 'https://github.com/fluttercommunity/plus_plugins/tree/main/packages/package_info_plus',
     ),
     Dependency(
       name: 'Permission Handler',
       license: 'MIT',
-      licenseUrl: 'https://github.com/Baseflow/flutter-permission-handler/blob/develop/permission_handler/LICENSE',
       sourceUrl: 'https://github.com/Baseflow/flutter-permission-handler',
     ),
     Dependency(
       name: 'Printing',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/DavBfr/dart_pdf/blob/master/LICENSE',
       sourceUrl: 'https://github.com/DavBfr/dart_pdf',
     ),
     Dependency(
@@ -130,21 +121,19 @@ class Constants {
     ),
     Dependency(
       name: 'sqflite',
-      license: 'MIT',
+      license: 'BSD 2-Clause',
-      licenseUrl: 'https://github.com/tekartik/sqflite/blob/master/sqflite/LICENSE',
       sourceUrl: 'https://github.com/tekartik/sqflite',
     ),
     Dependency(
       name: 'Streams Channel (Aves fork)',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/deckerst/aves_streams_channel/blob/master/LICENSE',
       sourceUrl: 'https://github.com/deckerst/aves_streams_channel',
     ),
     Dependency(
       name: 'URL Launcher',
       license: 'BSD 3-Clause',
       licenseUrl: 'https://github.com/flutter/plugins/blob/master/packages/url_launcher/url_launcher/LICENSE',
-      sourceUrl: 'https://github.com/flutter/plugins/blob/master/packages/url_launcher/url_launcher',
+      sourceUrl: 'https://github.com/flutter/plugins/tree/master/packages/url_launcher/url_launcher',
     ),
   ];
 
@@ -152,37 +141,31 @@ class Constants {
     Dependency(
       name: 'Charts',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/google/charts/blob/master/LICENSE',
       sourceUrl: 'https://github.com/google/charts',
     ),
     Dependency(
       name: 'Decorated Icon',
       license: 'MIT',
-      licenseUrl: 'https://github.com/benPesso/flutter_decorated_icon/blob/master/LICENSE',
       sourceUrl: 'https://github.com/benPesso/flutter_decorated_icon',
     ),
     Dependency(
       name: 'Expansion Tile Card (Aves fork)',
       license: 'BSD 3-Clause',
-      licenseUrl: 'https://github.com/deckerst/expansion_tile_card/blob/master/LICENSE',
       sourceUrl: 'https://github.com/deckerst/expansion_tile_card',
     ),
     Dependency(
       name: 'FlexColorPicker',
       license: 'BSD 3-Clause',
-      licenseUrl: 'https://github.com/rydmike/flex_color_picker/blob/master/LICENSE',
       sourceUrl: 'https://github.com/rydmike/flex_color_picker',
     ),
     Dependency(
       name: 'Flutter Highlight',
       license: 'MIT',
-      licenseUrl: 'https://github.com/git-touch/highlight/blob/master/LICENSE',
       sourceUrl: 'https://github.com/git-touch/highlight',
     ),
     Dependency(
       name: 'Flutter Map',
       license: 'BSD 3-Clause',
-      licenseUrl: 'https://github.com/fleaflet/flutter_map/blob/master/LICENSE',
       sourceUrl: 'https://github.com/fleaflet/flutter_map',
     ),
     Dependency(
@@ -194,19 +177,16 @@ class Constants {
     Dependency(
       name: 'Flutter Staggered Animations',
       license: 'MIT',
-      licenseUrl: 'https://github.com/mobiten/flutter_staggered_animations/blob/master/LICENSE',
       sourceUrl: 'https://github.com/mobiten/flutter_staggered_animations',
     ),
     Dependency(
       name: 'Material Design Icons Flutter',
       license: 'MIT',
-      licenseUrl: 'https://github.com/ziofat/material_design_icons_flutter/blob/master/LICENSE',
       sourceUrl: 'https://github.com/ziofat/material_design_icons_flutter',
     ),
     Dependency(
       name: 'Overlay Support',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/boyan01/overlay_support/blob/master/LICENSE',
       sourceUrl: 'https://github.com/boyan01/overlay_support',
     ),
     Dependency(
@@ -218,19 +198,16 @@ class Constants {
     Dependency(
       name: 'Panorama',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/zesage/panorama/blob/master/LICENSE',
       sourceUrl: 'https://github.com/zesage/panorama',
     ),
     Dependency(
       name: 'Percent Indicator',
       license: 'BSD 2-Clause',
-      licenseUrl: 'https://github.com/diegoveloper/flutter_percent_indicator/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/diegoveloper/flutter_percent_indicator',
-      sourceUrl: 'https://github.com/diegoveloper/flutter_percent_indicator/',
     ),
     Dependency(
       name: 'Provider',
       license: 'MIT',
-      licenseUrl: 'https://github.com/rrousselGit/provider/blob/master/LICENSE',
       sourceUrl: 'https://github.com/rrousselGit/provider',
     ),
   ];
@@ -239,19 +216,21 @@ class Constants {
     Dependency(
       name: 'Collection',
       license: 'BSD 3-Clause',
-      licenseUrl: 'https://github.com/dart-lang/collection/blob/master/LICENSE',
       sourceUrl: 'https://github.com/dart-lang/collection',
     ),
     Dependency(
       name: 'Country Code',
       license: 'MIT',
-      licenseUrl: 'https://github.com/denixport/dart.country/blob/master/LICENSE',
       sourceUrl: 'https://github.com/denixport/dart.country',
     ),
+    Dependency(
+      name: 'Equatable',
+      license: 'MIT',
+      sourceUrl: 'https://github.com/felangel/equatable',
+    ),
     Dependency(
       name: 'Event Bus',
       license: 'MIT',
-      licenseUrl: 'https://github.com/marcojakob/dart-event-bus/blob/master/LICENSE',
       sourceUrl: 'https://github.com/marcojakob/dart-event-bus',
     ),
     Dependency(
@@ -263,49 +242,41 @@ class Constants {
     Dependency(
       name: 'Get It',
       license: 'MIT',
-      licenseUrl: 'https://github.com/fluttercommunity/get_it/blob/master/LICENSE',
       sourceUrl: 'https://github.com/fluttercommunity/get_it',
     ),
     Dependency(
       name: 'Github',
       license: 'MIT',
-      licenseUrl: 'https://github.com/SpinlockLabs/github.dart/blob/master/LICENSE',
       sourceUrl: 'https://github.com/SpinlockLabs/github.dart',
     ),
     Dependency(
       name: 'Intl',
       license: 'BSD 3-Clause',
-      licenseUrl: 'https://github.com/dart-lang/intl/blob/master/LICENSE',
       sourceUrl: 'https://github.com/dart-lang/intl',
     ),
     Dependency(
       name: 'LatLong2',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/jifalops/dart-latlong/blob/master/LICENSE',
       sourceUrl: 'https://github.com/jifalops/dart-latlong',
     ),
     Dependency(
       name: 'PDF for Dart and Flutter',
       license: 'Apache 2.0',
-      licenseUrl: 'https://github.com/DavBfr/dart_pdf/blob/master/LICENSE',
       sourceUrl: 'https://github.com/DavBfr/dart_pdf',
     ),
     Dependency(
       name: 'Tuple',
       license: 'BSD 2-Clause',
-      licenseUrl: 'https://github.com/dart-lang/tuple/blob/master/LICENSE',
       sourceUrl: 'https://github.com/dart-lang/tuple',
     ),
     Dependency(
       name: 'Version',
       license: 'BSD 3-Clause',
-      licenseUrl: 'https://github.com/dartninja/version/blob/master/LICENSE',
       sourceUrl: 'https://github.com/dartninja/version',
     ),
     Dependency(
       name: 'XML',
       license: 'MIT',
-      licenseUrl: 'https://github.com/renggli/dart-xml/blob/master/LICENSE',
       sourceUrl: 'https://github.com/renggli/dart-xml',
     ),
   ];
@@ -320,7 +291,7 @@ class Dependency {
   const Dependency({
     required this.name,
     required this.license,
-    required this.licenseUrl,
+    String? licenseUrl,
     required this.sourceUrl,
-  });
+  }) : licenseUrl = licenseUrl ?? '$sourceUrl/blob/master/LICENSE';
 }

lib/widgets/aves_app.dart

@@ -15,6 +15,7 @@ import 'package:aves/widgets/common/extensions/build_context.dart';
 import 'package:aves/widgets/common/providers/highlight_info_provider.dart';
 import 'package:aves/widgets/home_page.dart';
 import 'package:aves/widgets/welcome_page.dart';
+import 'package:equatable/equatable.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:firebase_crashlytics/firebase_crashlytics.dart';
 import 'package:flutter/foundation.dart';
@@ -50,6 +51,7 @@ class _AvesAppState extends State<AvesApp> {
   @override
   void initState() {
     super.initState();
+    EquatableConfig.stringify = true;
     initPlatformServices();
     _appSetup = _setup();
     _mediaStoreChangeChannel.receiveBroadcastStream().listen((event) => _onMediaStoreChange(event as String?));

lib/widgets/common/grid/section_layout.dart

@@ -3,6 +3,7 @@ import 'dart:math';
 import 'package:aves/model/source/section_keys.dart';
 import 'package:aves/theme/durations.dart';
 import 'package:collection/collection.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
@@ -221,13 +222,17 @@ class SectionedListLayout<T> {
   String toString() => '$runtimeType#${shortHash(this)}{sectionCount=${sections.length} columnCount=$columnCount, tileExtent=$tileExtent}';
 }
 
-class SectionLayout {
+@immutable
+class SectionLayout extends Equatable {
   final SectionKey sectionKey;
   final int firstIndex, lastIndex, bodyFirstIndex;
   final double minOffset, maxOffset, bodyMinOffset;
   final double headerExtent, tileExtent, spacing, mainAxisStride;
   final IndexedWidgetBuilder builder;
 
+  @override
+  List<Object?> get props => [sectionKey, firstIndex, lastIndex, minOffset, maxOffset, headerExtent, tileExtent, spacing];
+
   const SectionLayout({
     required this.sectionKey,
     required this.firstIndex,
@@ -263,15 +268,6 @@ class SectionLayout {
     if (scrollOffset < 0) return firstIndex;
     return bodyFirstIndex + (scrollOffset / mainAxisStride).ceil() - 1;
   }
-
-  @override
-  bool operator ==(Object other) => identical(this, other) || other is SectionLayout && runtimeType == other.runtimeType && sectionKey == other.sectionKey && firstIndex == other.firstIndex && lastIndex == other.lastIndex && minOffset == other.minOffset && maxOffset == other.maxOffset && headerExtent == other.headerExtent && tileExtent == other.tileExtent && spacing == other.spacing;
-
-  @override
-  int get hashCode => hashValues(sectionKey, firstIndex, lastIndex, minOffset, maxOffset, headerExtent, tileExtent, spacing);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{sectionKey=$sectionKey, firstIndex=$firstIndex, lastIndex=$lastIndex, minOffset=$minOffset, maxOffset=$maxOffset, headerExtent=$headerExtent, tileExtent=$tileExtent, spacing=$spacing}';
 }
 
 class _GridRow extends MultiChildRenderObjectWidget {

lib/widgets/common/magnifier/controller/state.dart

@@ -1,28 +1,22 @@
 import 'dart:ui';
 
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
-import 'package:flutter/widgets.dart';
 
 @immutable
-class MagnifierState {
+class MagnifierState extends Equatable {
-  const MagnifierState({
-    required this.position,
-    required this.scale,
-    required this.source,
-  });
-
   final Offset position;
   final double? scale;
   final ChangeSource source;
 
   @override
-  bool operator ==(Object other) => identical(this, other) || other is MagnifierState && runtimeType == other.runtimeType && position == other.position && scale == other.scale;
+  List<Object?> get props => [position, scale, source];
 
-  @override
+  const MagnifierState({
-  int get hashCode => hashValues(position, scale, source);
+    required this.position,
-
+    required this.scale,
-  @override
+    required this.source,
-  String toString() => '$runtimeType#${shortHash(this)}{position: $position, scale: $scale, source: $source}';
+  });
 }
 
 enum ChangeSource { internal, gesture, animation }

lib/widgets/common/magnifier/core/core.dart

@@ -6,6 +6,7 @@ import 'package:aves/widgets/common/magnifier/magnifier.dart';
 import 'package:aves/widgets/common/magnifier/pan/corner_hit_detector.dart';
 import 'package:aves/widgets/common/magnifier/scale/scale_boundaries.dart';
 import 'package:aves/widgets/common/magnifier/scale/state.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/widgets.dart';
 
 /// Internal widget in which controls all animations lifecycle, core responses
@@ -276,17 +277,21 @@ class _MagnifierCoreState extends State<MagnifierCore> with TickerProviderStateM
   }
 }
 
-class _CenterWithOriginalSizeDelegate extends SingleChildLayoutDelegate {
+@immutable
+class _CenterWithOriginalSizeDelegate extends SingleChildLayoutDelegate with EquatableMixin {
+  final Size subjectSize;
+  final Alignment basePosition;
+  final bool applyScale;
+
+  @override
+  List<Object?> get props => [subjectSize, basePosition, applyScale];
+
   const _CenterWithOriginalSizeDelegate(
     this.subjectSize,
     this.basePosition,
     this.applyScale,
   );
 
-  final Size subjectSize;
-  final Alignment basePosition;
-  final bool applyScale;
-
   @override
   Offset getPositionForChild(Size size, Size childSize) {
     final childWidth = applyScale ? subjectSize.width : childSize.width;
@@ -309,10 +314,4 @@ class _CenterWithOriginalSizeDelegate extends SingleChildLayoutDelegate {
   bool shouldRelayout(_CenterWithOriginalSizeDelegate oldDelegate) {
     return oldDelegate != this;
   }
-
-  @override
-  bool operator ==(Object other) => identical(this, other) || other is _CenterWithOriginalSizeDelegate && runtimeType == other.runtimeType && subjectSize == other.subjectSize && basePosition == other.basePosition && applyScale == other.applyScale;
-
-  @override
-  int get hashCode => hashValues(subjectSize, basePosition, applyScale);
 }

lib/widgets/common/magnifier/scale/scale_boundaries.dart

@@ -2,17 +2,22 @@ import 'dart:ui';
 
 import 'package:aves/widgets/common/magnifier/controller/controller.dart';
 import 'package:aves/widgets/common/magnifier/scale/scale_level.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 
 /// Internal class to wrap custom scale boundaries (min, max and initial)
 /// Also, stores values regarding the two sizes: the container and the child.
-class ScaleBoundaries {
+@immutable
+class ScaleBoundaries extends Equatable {
   final ScaleLevel _minScale;
   final ScaleLevel _maxScale;
   final ScaleLevel _initialScale;
   final Size viewportSize;
   final Size childSize;
 
+  @override
+  List<Object?> get props => [_minScale, _maxScale, _initialScale, viewportSize, childSize];
+
   const ScaleBoundaries({
     required ScaleLevel minScale,
     required ScaleLevel maxScale,
@@ -57,13 +62,4 @@ class ScaleBoundaries {
   Offset childToStatePosition(double scale, Offset childPosition) {
     return (_childCenter - childPosition) * scale;
   }
-
-  @override
-  bool operator ==(Object other) => identical(this, other) || other is ScaleBoundaries && runtimeType == other.runtimeType && _minScale == other._minScale && _maxScale == other._maxScale && _initialScale == other._initialScale && viewportSize == other.viewportSize && childSize == other.childSize;
-
-  @override
-  int get hashCode => hashValues(_minScale, _maxScale, _initialScale, viewportSize, childSize);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{viewportSize=$viewportSize, childSize=$childSize, initialScale=$initialScale, minScale=$minScale, maxScale=$maxScale}';
 }

lib/widgets/common/magnifier/scale/scale_level.dart

@@ -1,12 +1,17 @@
 import 'dart:math';
 
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/rendering.dart';
 
-class ScaleLevel {
+@immutable
+class ScaleLevel extends Equatable {
   final ScaleReference ref;
   final double factor;
 
+  @override
+  List<Object?> get props => [ref, factor];
+
   const ScaleLevel({
     this.ref = ScaleReference.absolute,
     this.factor = 1.0,
@@ -15,18 +20,6 @@ class ScaleLevel {
   static double scaleForContained(Size containerSize, Size childSize) => min(containerSize.width / childSize.width, containerSize.height / childSize.height);
 
   static double scaleForCovering(Size containerSize, Size childSize) => max(containerSize.width / childSize.width, containerSize.height / childSize.height);
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{ref=$ref, factor=$factor}';
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is ScaleLevel && other.ref == ref && other.factor == factor;
-  }
-
-  @override
-  int get hashCode => hashValues(ref, factor);
 }
 
 enum ScaleReference { absolute, contained, covered }

lib/widgets/common/magnifier/scale/state.dart

@@ -1,29 +1,24 @@
 import 'dart:ui';
 
 import 'package:aves/widgets/common/magnifier/controller/state.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 @immutable
-class ScaleStateChange {
+class ScaleStateChange extends Equatable {
-  const ScaleStateChange({
-    required this.state,
-    required this.source,
-    this.childFocalPoint,
-  });
-
   final ScaleState state;
   final ChangeSource source;
   final Offset? childFocalPoint;
 
   @override
-  bool operator ==(Object other) => identical(this, other) || other is ScaleStateChange && runtimeType == other.runtimeType && state == other.state && childFocalPoint == other.childFocalPoint;
+  List<Object?> get props => [state, source, childFocalPoint];
 
-  @override
+  const ScaleStateChange({
-  int get hashCode => hashValues(state, source, childFocalPoint);
+    required this.state,
-
+    required this.source,
-  @override
+    this.childFocalPoint,
-  String toString() => '$runtimeType#${shortHash(this)}{scaleState: $state, source: $source, childFocalPoint: $childFocalPoint}';
+  });
 }
 
 enum ScaleState {

lib/widgets/filter_grids/common/section_keys.dart

@@ -2,29 +2,20 @@ import 'package:aves/model/source/section_keys.dart';
 import 'package:aves/theme/icons.dart';
 import 'package:aves/utils/android_file_utils.dart';
 import 'package:aves/widgets/common/extensions/build_context.dart';
-import 'package:flutter/foundation.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/material.dart';
 
-class ChipSectionKey extends SectionKey {
+class ChipSectionKey extends SectionKey with EquatableMixin {
   final String title;
 
+  @override
+  List<Object?> get props => [title];
+
   const ChipSectionKey({
     this.title = '',
   });
 
   Widget? get leading => null;
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is ChipSectionKey && other.title == title;
-  }
-
-  @override
-  int get hashCode => title.hashCode;
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{title=$title}';
 }
 
 class AlbumImportanceSectionKey extends ChipSectionKey {

lib/widgets/viewer/hero.dart

@@ -1,21 +1,17 @@
 import 'package:aves/model/entry.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/widgets.dart';
 
-class HeroInfo {
+@immutable
+class HeroInfo extends Equatable {
   // hero tag should include a collection identifier, so that it animates
   // between different views of the entry in the same collection (e.g. thumbnails <-> viewer)
   // but not between different collection instances, even with the same attributes (e.g. reloading collection page via drawer)
   final int? collectionId;
   final AvesEntry? entry;
 
+  @override
+  List<Object?> get props => [collectionId, entry?.uri];
+
   const HeroInfo(this.collectionId, this.entry);
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is HeroInfo && other.collectionId == collectionId && other.entry == entry;
-  }
-
-  @override
-  int get hashCode => hashValues(collectionId, entry);
 }

lib/widgets/viewer/info/metadata/xmp_namespaces.dart

@@ -12,13 +12,18 @@ import 'package:aves/widgets/viewer/info/metadata/xmp_ns/photoshop.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_ns/tiff.dart';
 import 'package:aves/widgets/viewer/info/metadata/xmp_ns/xmp.dart';
 import 'package:collection/collection.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
-class XmpNamespace {
+@immutable
+class XmpNamespace extends Equatable {
   final String namespace;
   final Map<String, String> rawProps;
 
+  @override
+  List<Object?> get props => [namespace];
+
   const XmpNamespace(this.namespace, this.rawProps);
 
   factory XmpNamespace.create(String namespace, Map<String, String> rawProps) {
@@ -119,20 +124,6 @@ class XmpNamespace {
   String formatValue(XmpProp prop) => prop.value;
 
   Map<String, InfoLinkHandler> linkifyValues(List<XmpProp> props) => {};
-
-  // identity
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is XmpNamespace && other.namespace == namespace;
-  }
-
-  @override
-  int get hashCode => namespace.hashCode;
-
-  @override
-  String toString() => '$runtimeType#${shortHash(this)}{namespace=$namespace}';
 }
 
 class XmpProp {

lib/widgets/viewer/visual/subtitle/line.dart

@@ -1,13 +1,17 @@
 import 'package:aves/widgets/viewer/visual/subtitle/span.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 @immutable
-class StyledSubtitleLine with Diagnosticable {
+class StyledSubtitleLine extends Equatable with Diagnosticable {
   final List<StyledSubtitleSpan> spans;
   final List<Path>? clip;
   final Offset? position;
 
+  @override
+  List<Object?> get props => [spans, clip, position];
+
   const StyledSubtitleLine({
     required this.spans,
     this.clip,
@@ -33,17 +37,4 @@ class StyledSubtitleLine with Diagnosticable {
     properties.add(DiagnosticsProperty<List<Path>>('clip', clip));
     properties.add(DiagnosticsProperty<Offset>('position', position));
   }
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is StyledSubtitleLine && other.spans == spans && other.clip == clip && other.position == position;
-  }
-
-  @override
-  int get hashCode => hashValues(
-        spans,
-        clip,
-        position,
-      );
 }

lib/widgets/viewer/visual/subtitle/span.dart

@@ -1,12 +1,16 @@
 import 'package:aves/widgets/viewer/visual/subtitle/style.dart';
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 @immutable
-class StyledSubtitleSpan with Diagnosticable {
+class StyledSubtitleSpan extends Equatable with Diagnosticable {
   final TextSpan textSpan;
   final SubtitleStyle extraStyle;
 
+  @override
+  List<Object?> get props => [textSpan, extraStyle];
+
   const StyledSubtitleSpan({
     required this.textSpan,
     required this.extraStyle,
@@ -28,16 +32,4 @@ class StyledSubtitleSpan with Diagnosticable {
     properties.add(DiagnosticsProperty<TextSpan>('textSpan', textSpan));
     properties.add(DiagnosticsProperty<SubtitleStyle>('extraStyle', extraStyle));
   }
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is StyledSubtitleSpan && other.textSpan == textSpan && other.extraStyle == extraStyle;
-  }
-
-  @override
-  int get hashCode => hashValues(
-        textSpan,
-        extraStyle,
-      );
 }

lib/widgets/viewer/visual/subtitle/style.dart

@@ -1,8 +1,9 @@
+import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 @immutable
-class SubtitleStyle with Diagnosticable {
+class SubtitleStyle extends Equatable with Diagnosticable {
   final TextAlign? hAlign;
   final TextAlignVertical? vAlign;
   final Color? borderColor;
@@ -15,6 +16,23 @@ class SubtitleStyle with Diagnosticable {
 
   bool get shearing => (shearX ?? 0) != 0 || (shearY ?? 0) != 0;
 
+  @override
+  List<Object?> get props => [
+        hAlign,
+        vAlign,
+        borderColor,
+        borderWidth,
+        edgeBlur,
+        rotationX,
+        rotationY,
+        rotationZ,
+        scaleX,
+        scaleY,
+        shearX,
+        shearY,
+        drawingPaths?.length,
+      ];
+
   const SubtitleStyle({
     this.hAlign,
     this.vAlign,
@@ -80,27 +98,4 @@ class SubtitleStyle with Diagnosticable {
     properties.add(DoubleProperty('shearY', shearY));
     properties.add(DiagnosticsProperty<List<Path>>('drawingPaths', drawingPaths));
   }
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) return false;
-    return other is SubtitleStyle && other.hAlign == hAlign && other.vAlign == vAlign && other.borderColor == borderColor && other.borderWidth == borderWidth && other.edgeBlur == edgeBlur && other.rotationX == rotationX && other.rotationY == rotationY && other.rotationZ == rotationZ && other.scaleX == scaleX && other.scaleY == scaleY && other.shearX == shearX && other.shearY == shearY && other.drawingPaths == drawingPaths;
-  }
-
-  @override
-  int get hashCode => hashValues(
-        hAlign,
-        vAlign,
-        borderColor,
-        borderWidth,
-        edgeBlur,
-        rotationX,
-        rotationY,
-        rotationZ,
-        scaleX,
-        scaleY,
-        shearX,
-        shearY,
-        drawingPaths?.length,
-      );
 }

pubspec.lock

@@ -183,6 +183,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.1"
+  equatable:
+    dependency: "direct main"
+    description:
+      name: equatable
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.3"
   event_bus:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -17,6 +17,7 @@ dependencies:
   connectivity_plus:
   country_code:
   decorated_icon:
+  equatable:
   event_bus:
   expansion_tile_card:
     git: