refa: dir

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/common/widgets/loading_widget/http_error.dart

@@ -0,0 +1,67 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+
+class HttpError extends StatelessWidget {
+  const HttpError({
+    this.isSliver = true,
+    this.errMsg,
+    this.onReload,
+    this.btnText,
+    super.key,
+  });
+
+  final bool isSliver;
+  final String? errMsg;
+  final VoidCallback? onReload;
+  final String? btnText;
+
+  @override
+  Widget build(BuildContext context) {
+    return isSliver
+        ? SliverToBoxAdapter(child: content(context))
+        : SizedBox(
+            width: double.infinity,
+            child: content(context),
+          );
+  }
+
+  Widget content(BuildContext context) {
+    final theme = Theme.of(context);
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      crossAxisAlignment: CrossAxisAlignment.center,
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        const SizedBox(height: 40),
+        SvgPicture.asset(
+          "assets/images/error.svg",
+          height: 200,
+        ),
+        const SizedBox(height: 30),
+        Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 5),
+          child: SelectableText(
+            errMsg ?? '没有数据',
+            textAlign: TextAlign.center,
+            style: theme.textTheme.titleSmall,
+            scrollPhysics: const NeverScrollableScrollPhysics(),
+          ),
+        ),
+        if (onReload != null)
+          FilledButton.tonal(
+            onPressed: onReload,
+            style: ButtonStyle(
+              backgroundColor: WidgetStateProperty.resolveWith((states) {
+                return theme.colorScheme.primary.withAlpha(20);
+              }),
+            ),
+            child: Text(
+              btnText ?? '点击重试',
+              style: TextStyle(color: theme.colorScheme.primary),
+            ),
+          ),
+        SizedBox(height: 40 + MediaQuery.paddingOf(context).bottom),
+      ],
+    );
+  }
+}