feat(neon): Add error builder for cached images

Signed-off-by: jld3103 <jld3103yt@gmail.com>

packages/neon/neon/lib/src/widgets/cached_image.dart

@@ -11,6 +11,7 @@ import 'package:neon/src/widgets/linear_progress_indicator.dart';
 typedef CacheReviver = FutureOr<Uint8List?> Function(CacheManager cacheManager);
 typedef ImageDownloader = FutureOr<Uint8List> Function();
 typedef CacheWriter = Future<void> Function(CacheManager cacheManager, Uint8List image);
+typedef ErrorWidgetBuilder = Widget? Function(BuildContext, dynamic);
 
 class NeonCachedImage extends StatefulWidget {
   const NeonCachedImage({
@@ -21,6 +22,7 @@ class NeonCachedImage extends StatefulWidget {
     this.fit,
     this.svgColor,
     this.iconColor,
+    this.errorBuilder,
   });
 
   NeonCachedImage.url({
@@ -31,6 +33,7 @@ class NeonCachedImage extends StatefulWidget {
     this.fit,
     this.svgColor,
     this.iconColor,
+    this.errorBuilder,
   })  : image = _getImageFromUrl(url),
         super(key: key ?? Key(url));
 
@@ -44,6 +47,7 @@ class NeonCachedImage extends StatefulWidget {
     this.fit,
     this.svgColor,
     this.iconColor,
+    this.errorBuilder,
   })  : image = _customImageGetter(
           reviver,
           getImage,
@@ -61,6 +65,8 @@ class NeonCachedImage extends StatefulWidget {
   final Color? svgColor;
   final Color? iconColor;
 
+  final ErrorWidgetBuilder? errorBuilder;
+
   static Future<Uint8List> _getImageFromUrl(final String url) async {
     final file = await _cacheManager.getSingleFile(url);
     return file.readAsBytes();
@@ -116,6 +122,10 @@ class _NeonCachedImageState extends State<NeonCachedImage> {
         child: FutureBuilder<Uint8List>(
           future: widget.image,
           builder: (final context, final fileSnapshot) {
+            if (fileSnapshot.hasError) {
+              return _buildError(fileSnapshot.error);
+            }
+
             if (!fileSnapshot.hasData) {
               return SizedBox(
                 width: widget.size?.width,
@@ -125,18 +135,6 @@ class _NeonCachedImageState extends State<NeonCachedImage> {
               );
             }
 
-            if (fileSnapshot.hasError) {
-              return NeonException(
-                fileSnapshot.error,
-                onRetry: () {
-                  setState(() {});
-                },
-                onlyIcon: true,
-                iconSize: widget.size?.shortestSide,
-                color: widget.iconColor ?? Theme.of(context).colorScheme.error,
-              );
-            }
-
             final content = fileSnapshot.requireData;
 
             try {
@@ -160,8 +158,20 @@ class _NeonCachedImageState extends State<NeonCachedImage> {
               width: widget.size?.width,
               fit: widget.fit,
               gaplessPlayback: true,
+              errorBuilder: (final context, final error, final stacktrace) => _buildError(error),
             );
           },
         ),
       );
+
+  Widget _buildError(final dynamic error) =>
+      widget.errorBuilder?.call(context, error) ??
+      NeonException(
+        error,
+        onRetry: () {
+          setState(() {});
+        },
+        onlyIcon: true,
+        iconSize: widget.size?.shortestSide,
+      );
 }