minor fixes

lib/widgets/album/search/search_delegate.dart

@@ -103,7 +103,12 @@ class ImageSearchDelegate extends SearchDelegate<CollectionFilter> {
   @override
   Widget buildResults(BuildContext context) {
     final cleanQuery = query.trim();
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      // `buildResults` is called in the build phase,
+      // so we post the call that will filter the collection
+      // and possibly trigger a rebuild here
       close(context, cleanQuery.isNotEmpty ? QueryFilter(cleanQuery) : null);
+    });
     return const SizedBox.shrink();
   }
 }

lib/widgets/stats.dart

@@ -8,6 +8,7 @@ import 'package:aves/model/image_entry.dart';
 import 'package:aves/utils/color_utils.dart';
 import 'package:aves/utils/constants.dart';
 import 'package:aves/widgets/album/collection_page.dart';
+import 'package:aves/widgets/album/empty.dart';
 import 'package:aves/widgets/common/aves_filter_chip.dart';
 import 'package:aves/widgets/common/data_providers/media_query_data_provider.dart';
 import 'package:charts_flutter/flutter.dart' as charts;
@@ -46,19 +47,17 @@ class StatsPage extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    Widget child;
+    if (collection.isEmpty) {
+      child = EmptyContent();
+    } else {
       final catalogued = entries.where((entry) => entry.isCatalogued);
       final withGps = catalogued.where((entry) => entry.hasGps);
       final withGpsPercent = withGps.length / collection.entryCount;
       final Map<String, int> byMimeTypes = groupBy(entries, (entry) => entry.mimeType).map((k, v) => MapEntry(k, v.length));
       final imagesByMimeTypes = Map.fromEntries(byMimeTypes.entries.where((kv) => kv.key.startsWith('image/')));
       final videoByMimeTypes = Map.fromEntries(byMimeTypes.entries.where((kv) => kv.key.startsWith('video/')));
-    return MediaQueryDataProvider(
+      child = ListView(
-      child: Scaffold(
-        appBar: AppBar(
-          title: const Text('Stats'),
-        ),
-        body: SafeArea(
-          child: ListView(
         children: [
           Wrap(
             alignment: WrapAlignment.center,
@@ -91,7 +90,15 @@ class StatsPage extends StatelessWidget {
           ..._buildTopFilters(context, 'Top countries', entryCountPerCountry, (s) => LocationFilter(LocationLevel.country, s)),
           ..._buildTopFilters(context, 'Top tags', entryCountPerTag, (s) => TagFilter(s)),
         ],
+      );
+    }
+    return MediaQueryDataProvider(
+      child: Scaffold(
+        appBar: AppBar(
+          title: const Text('Stats'),
         ),
+        body: SafeArea(
+          child: child,
         ),
       ),
     );
@@ -122,7 +129,7 @@ class StatsPage extends StatelessWidget {
     return LayoutBuilder(builder: (context, constraints) {
       final mq = MediaQuery.of(context);
       final availableWidth = constraints.maxWidth;
-      final double dim = max(mimeDonutMinWidth, availableWidth / (mq.orientation == Orientation.landscape && availableWidth > 4 * mimeDonutMinWidth ? 4 : 2));
+      final double dim = max(mimeDonutMinWidth, availableWidth / (availableWidth > 4 * mimeDonutMinWidth ? 4 : 2));
 
       final donut = Container(
         width: dim,