search: added recent filters

lib/model/filters/album.dart

@@ -87,6 +87,6 @@ class AlbumFilter extends CollectionFilter {
 
   @override
   String toString() {
-    return 'AlbumFilter{album=$album}';
+    return '$runtimeType#${shortHash(this)}{album=$album}';
   }
 }

lib/model/filters/location.dart

@@ -1,6 +1,7 @@
 import 'package:aves/model/filters/filters.dart';
 import 'package:aves/model/image_entry.dart';
 import 'package:aves/widgets/common/icons.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 class LocationFilter extends CollectionFilter {
@@ -45,7 +46,7 @@ class LocationFilter extends CollectionFilter {
     // as of Flutter v1.22.0-12.1.pre emoji shadows are rendered as colorful duplicates,
     // not filled with the shadow color as expected, so we remove them
     if (flag != null) return Text(flag, style: TextStyle(fontSize: size, shadows: []));
-    return Icon(AIcons.location, size: size);
+    return Icon(_location.isEmpty ? AIcons.locationOff : AIcons.location, size: size);
   }
 
   @override
@@ -62,7 +63,7 @@ class LocationFilter extends CollectionFilter {
 
   @override
   String toString() {
-    return 'LocationFilter{level=$level, location=$_location}';
+    return '$runtimeType#${shortHash(this)}{level=$level, location=$_location}';
   }
 
   // U+0041 Latin Capital letter A

lib/model/filters/mime.dart

@@ -1,6 +1,7 @@
 import 'package:aves/model/filters/filters.dart';
 import 'package:aves/model/image_entry.dart';
 import 'package:aves/widgets/common/icons.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 class MimeFilter extends CollectionFilter {
@@ -81,4 +82,9 @@ class MimeFilter extends CollectionFilter {
 
   @override
   int get hashCode => hashValues(type, mime);
+
+  @override
+  String toString() {
+    return '$runtimeType#${shortHash(this)}{mime=$mime}';
+  }
 }

lib/model/filters/query.dart

@@ -69,4 +69,9 @@ class QueryFilter extends CollectionFilter {
 
   @override
   int get hashCode => hashValues(type, query);
+
+  @override
+  String toString() {
+    return '$runtimeType#${shortHash(this)}{query=$query}';
+  }
 }

lib/model/filters/tag.dart

@@ -1,6 +1,7 @@
 import 'package:aves/model/filters/filters.dart';
 import 'package:aves/model/image_entry.dart';
 import 'package:aves/widgets/common/icons.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 
 class TagFilter extends CollectionFilter {
@@ -32,7 +33,7 @@ class TagFilter extends CollectionFilter {
   String get label => tag.isEmpty ? emptyLabel : tag;
 
   @override
-  Widget iconBuilder(BuildContext context, double size, {bool showGenericIcon = true, bool embossed = false}) => showGenericIcon ? Icon(AIcons.tag, size: size) : null;
+  Widget iconBuilder(BuildContext context, double size, {bool showGenericIcon = true, bool embossed = false}) => showGenericIcon ? Icon(tag.isEmpty ? AIcons.tagOff : AIcons.tag, size: size) : null;
 
   @override
   String get typeKey => type;
@@ -48,6 +49,6 @@ class TagFilter extends CollectionFilter {
 
   @override
   String toString() {
-    return 'TagFilter{tag=$tag}';
+    return '$runtimeType#${shortHash(this)}{tag=$tag}';
   }
 }

lib/model/settings/settings.dart

@@ -55,6 +55,10 @@ class Settings extends ChangeNotifier {
   // rendering
   static const svgBackgroundKey = 'svg_background';
 
+  // search
+  static const saveSearchHistoryKey = 'save_search_history';
+  static const searchHistoryKey = 'search_history';
+
   Future<void> init() async {
     _prefs = await SharedPreferences.getInstance();
   }
@@ -179,6 +183,16 @@ class Settings extends ChangeNotifier {
 
   set svgBackground(int newValue) => setAndNotify(svgBackgroundKey, newValue);
 
+  // search
+
+  bool get saveSearchHistory => getBoolOrDefault(saveSearchHistoryKey, true);
+
+  set saveSearchHistory(bool newValue) => setAndNotify(saveSearchHistoryKey, newValue);
+
+  List<CollectionFilter> get searchHistory => (_prefs.getStringList(searchHistoryKey) ?? []).map(CollectionFilter.fromJson).toList();
+
+  set searchHistory(List<CollectionFilter> newValue) => setAndNotify(searchHistoryKey, newValue.map((filter) => filter.toJson()).toList());
+
   // utils
 
   // `RoutePredicate`

lib/utils/constants.dart

@@ -160,6 +160,12 @@ class Constants {
       licenseUrl: 'https://github.com/MikeMitterer/dart-latlong/blob/master/LICENSE',
       sourceUrl: 'https://github.com/MikeMitterer/dart-latlong',
     ),
+    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',

lib/widgets/app_debug_page.dart

@@ -316,6 +316,7 @@ class AppDebugPageState extends State<AppDebugPage> {
           'collectionTileExtent': '${settings.collectionTileExtent}',
           'infoMapZoom': '${settings.infoMapZoom}',
           'pinnedFilters': '${settings.pinnedFilters}',
+          'searchHistory': '${settings.searchHistory}',
         }),
       ],
     );

lib/widgets/common/icons.dart

@@ -6,6 +6,7 @@ import 'package:aves/utils/constants.dart';
 import 'package:aves/widgets/common/image_providers/app_icon_image_provider.dart';
 import 'package:decorated_icon/decorated_icon.dart';
 import 'package:flutter/material.dart';
+import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
 
 class AIcons {
   static const IconData allCollection = Icons.collections_outlined;
@@ -20,15 +21,17 @@ class AIcons {
   static const IconData disc = Icons.fiber_manual_record;
   static const IconData error = Icons.error_outline;
   static const IconData location = Icons.place_outlined;
+  static const IconData locationOff = Icons.location_off_outlined;
   static const IconData raw = Icons.camera_outlined;
   static const IconData shooting = Icons.camera_outlined;
   static const IconData removableStorage = Icons.sd_storage_outlined;
   static const IconData settings = Icons.settings_outlined;
   static const IconData text = Icons.format_quote_outlined;
   static const IconData tag = Icons.local_offer_outlined;
+  static const IconData tagOff = MdiIcons.tagOffOutline;
 
   // actions
-  static const IconData addShortcut = Icons.bookmark_border;
+  static const IconData addShortcut = Icons.add_to_home_screen_outlined;
   static const IconData clear = Icons.clear_outlined;
   static const IconData collapse = Icons.expand_less_outlined;
   static const IconData createAlbum = Icons.add_circle_outline;

lib/widgets/search/search_delegate.dart

@@ -25,6 +25,8 @@ class ImageSearchDelegate {
   final ValueNotifier<String> expandedSectionNotifier = ValueNotifier(null);
   final CollectionLens parentCollection;
 
+  static const searchHistoryCount = 10;
+
   ImageSearchDelegate({@required this.source, this.parentCollection});
 
   ThemeData appBarTheme(BuildContext context) {
@@ -67,7 +69,8 @@ class ImageSearchDelegate {
       child: ValueListenableBuilder<String>(
           valueListenable: expandedSectionNotifier,
           builder: (context, expandedSection, child) {
-            var queryFilter = _buildQueryFilter(false);
+            final queryFilter = _buildQueryFilter(false);
+            final history = settings.searchHistory;
             return ListView(
               padding: EdgeInsets.only(top: 8),
               children: [
@@ -85,6 +88,12 @@ class ImageSearchDelegate {
                   // but we also need to animate the query chip when it is selected by submitting the search query
                   heroTypeBuilder: (filter) => filter == queryFilter ? HeroType.always : HeroType.onTap,
                 ),
+                if (upQuery.isEmpty && history.isNotEmpty)
+                  _buildFilterRow(
+                    context: context,
+                    title: 'Recent',
+                    filters: history,
+                  ),
                 StreamBuilder(
                     stream: source.eventBus.on<AlbumsChangedEvent>(),
                     builder: (context, snapshot) {
@@ -170,6 +179,12 @@ class ImageSearchDelegate {
   }
 
   void _select(BuildContext context, CollectionFilter filter) {
+    if (settings.saveSearchHistory) {
+      final history = settings.searchHistory
+        ..remove(filter)
+        ..insert(0, filter);
+      settings.searchHistory = history.take(searchHistoryCount).toList();
+    }
     if (parentCollection != null) {
       _applyToParentCollectionPage(context, filter);
     } else {

lib/widgets/settings/settings_page.dart

@@ -40,6 +40,7 @@ class _SettingsPageState extends State<SettingsPage> {
                   _buildDisplaySection(context),
                   _buildThumbnailsSection(context),
                   _buildViewerSection(context),
+                  _buildSearchSection(context),
                   _buildPrivacySection(context),
                 ],
               ),
@@ -171,6 +172,25 @@ class _SettingsPageState extends State<SettingsPage> {
     );
   }
 
+  Widget _buildSearchSection(BuildContext context) {
+    return AvesExpansionTile(
+      title: 'Search',
+      expandedNotifier: _expandedNotifier,
+      children: [
+        SwitchListTile(
+          value: settings.saveSearchHistory,
+          onChanged: (v) {
+            settings.saveSearchHistory = v;
+            if (!v) {
+              settings.searchHistory = [];
+            }
+          },
+          title: Text('Save search history'),
+        ),
+      ],
+    );
+  }
+
   Widget _buildPrivacySection(BuildContext context) {
     return AvesExpansionTile(
       title: 'Privacy',

pubspec.lock

@@ -480,6 +480,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.12.10-nullsafety.1"
+  material_design_icons_flutter:
+    dependency: "direct main"
+    description:
+      name: material_design_icons_flutter
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.0.5755"
   meta:
     dependency: transitive
     description:

pubspec.yaml

@@ -65,6 +65,7 @@ dependencies:
   google_maps_flutter:
   intl:
   latlong: # for flutter_map
+  material_design_icons_flutter:
   overlay_support:
   package_info:
   palette_generator: