🔥 Make the first asset count not blocking loads (#549)

Author: AlexV525

CHANGELOG.md

@@ -12,6 +12,7 @@ that can be found in the LICENSE file. -->
 ### Improvements
 
 - Use `wechat_picker_library`.
+- Make the first asset count not blocking loads.
 
 ### Fixes
 

lib/src/delegates/asset_picker_builder_delegate.dart

@@ -1873,32 +1873,15 @@ class DefaultAssetPickerBuilderDelegate
                           end: 20,
                         ),
                         child: ExcludeSemantics(
-                          child: Row(
-                            children: <Widget>[
-                              Flexible(
-                                child: Padding(
-                                  padding: const EdgeInsetsDirectional.only(
-                                    end: 10,
-                                  ),
-                                  child: ScaleText(
-                                    name,
-                                    style: const TextStyle(fontSize: 17),
-                                    maxLines: 1,
-                                    overflow: TextOverflow.ellipsis,
-                                  ),
-                                ),
-                              ),
+                          child: ScaleText.rich(
+                            [
+                              TextSpan(text: name),
                               if (semanticsCount != null)
-                                ScaleText(
-                                  '($semanticsCount)',
-                                  style: TextStyle(
-                                    color: theme.textTheme.bodySmall?.color,
-                                    fontSize: 17,
-                                  ),
-                                  maxLines: 1,
-                                  overflow: TextOverflow.ellipsis,
-                                ),
+                                TextSpan(text: ' ($semanticsCount)'),
                             ],
+                            style: const TextStyle(fontSize: 17),
+                            maxLines: 1,
+                            overflow: TextOverflow.ellipsis,
                           ),
                         ),
                       ),

lib/src/provider/asset_picker_provider.dart

@@ -121,9 +121,19 @@ abstract class AssetPickerProvider<Asset, Path> extends ChangeNotifier {
     notifyListeners();
   }
 
+  bool? _hasMoreToLoad;
+
   /// Whether more assets are waiting for a load.
   /// 是否还有更多资源可以加载
-  bool get hasMoreToLoad => _currentAssets.length < _totalAssetsCount!;
+  bool get hasMoreToLoad {
+    if (_hasMoreToLoad case final bool value) {
+      return value;
+    }
+    if (_totalAssetsCount case final int count) {
+      return _currentAssets.length < count;
+    }
+    return true;
+  }
 
   /// The current page for assets list.
   /// 当前加载的资源列表分页数
@@ -263,10 +273,7 @@ class DefaultAssetPickerProvider
   }) {
     Singleton.sortPathDelegate = sortPathDelegate ?? SortPathDelegate.common;
     // Call [getAssetList] with route duration when constructing.
-    Future<void>.delayed(initializeDelayDuration, () async {
-      await getPaths();
-      await getAssetsFromCurrentPath();
-    });
+    Future<void>.delayed(initializeDelayDuration, getPaths);
   }
 
   @visibleForTesting
@@ -365,6 +372,8 @@ class DefaultAssetPickerProvider
     if (_paths.isNotEmpty) {
       _currentPath ??= _paths.first;
     }
+
+    await getAssetsFromCurrentPath();
   }
 
   Completer<void>? _getAssetsFromPathCompleter;
@@ -380,18 +389,21 @@ class DefaultAssetPickerProvider
       );
       if (currentPage == 0) {
         _currentAssets.clear();
+      } else if (list.isEmpty) {
+        _hasMoreToLoad = false;
       }
       _currentAssets.addAll(list);
       _hasAssetsToDisplay = _currentAssets.isNotEmpty;
       notifyListeners();
     }
 
     if (_getAssetsFromPathCompleter == null) {
-      _getAssetsFromPathCompleter = Completer<void>();
-      run().then((_) {
-        _getAssetsFromPathCompleter!.complete();
+      final completer = Completer<void>();
+      _getAssetsFromPathCompleter = completer;
+      run().then((r) {
+        completer.complete();
       }).catchError((Object e, StackTrace s) {
-        _getAssetsFromPathCompleter!.completeError(e, s);
+        completer.completeError(e, s);
       }).whenComplete(() {
         _getAssetsFromPathCompleter = null;
       });
@@ -505,26 +517,6 @@ class DefaultAssetPickerProvider
       isAssetsEmpty = true;
       return;
     }
-    final PathWrapper<AssetPathEntity> wrapper = _currentPath!;
-    if (wrapper.assetCount == null) {
-      final int assetCount = await wrapper.path.assetCountAsync;
-      // If the picker was disposed (#492), stop fetching the assets.
-      if (!mounted) {
-        return;
-      }
-      if (_paths.isNotEmpty &&
-          _currentPath != null &&
-          _currentPath!.assetCount == null) {
-        _totalAssetsCount = assetCount;
-        _isAssetsEmpty = assetCount == 0;
-        _currentPath = wrapper.copyWith(assetCount: assetCount);
-        notifyListeners();
-      } else if (_currentPath?.assetCount case final int count) {
-        _totalAssetsCount = count;
-        _isAssetsEmpty = count == 0;
-        notifyListeners();
-      }
-    }
     await getAssetsFromPath(0, currentPath!.path);
   }
 }