Initial commit

2026-07-14 11:11:36 +08:00
commit 656499cf94
604 changed files with 119518 additions and 0 deletions
@@ -0,0 +1,128 @@
+import 'package:flutter/material.dart';
+
+class AppErrorState extends StatelessWidget {
+  final String title;
+  final String? message;
+  final IconData icon;
+  final VoidCallback? onRetry;
+  final Widget? action;
+  final bool compact;
+  final bool panel;
+  final Color? foregroundColor;
+
+  const AppErrorState({
+    super.key,
+    this.title = '加载失败',
+    this.message,
+    this.icon = Icons.error_outline,
+    this.onRetry,
+    this.action,
+    this.compact = false,
+    this.panel = false,
+    this.foregroundColor,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final child = ConstrainedBox(
+      constraints: BoxConstraints(maxWidth: compact ? 420 : 520),
+      child: Padding(
+        padding: EdgeInsets.all(compact ? 16 : 28),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Container(
+              width: compact ? 36 : 48,
+              height: compact ? 36 : 48,
+              decoration: BoxDecoration(
+                color: theme.colorScheme.errorContainer.withValues(alpha: 0.72),
+                borderRadius: BorderRadius.circular(8),
+              ),
+              child: Icon(
+                icon,
+                size: compact ? 20 : 26,
+                color: theme.colorScheme.onErrorContainer,
+              ),
+            ),
+            SizedBox(height: compact ? 10 : 14),
+            Text(
+              title,
+              textAlign: TextAlign.center,
+              style:
+                  (compact
+                          ? theme.textTheme.titleSmall
+                          : theme.textTheme.titleMedium)
+                      ?.copyWith(
+                        color: foregroundColor,
+                        fontWeight: FontWeight.w600,
+                      ),
+            ),
+            if (message != null && message!.isNotEmpty) ...[
+              const SizedBox(height: 8),
+              Text(
+                message!,
+                textAlign: TextAlign.center,
+                style: theme.textTheme.bodyMedium?.copyWith(
+                  color:
+                      foregroundColor?.withValues(alpha: 0.72) ??
+                      theme.colorScheme.onSurfaceVariant,
+                  height: 1.4,
+                ),
+              ),
+            ],
+            if (action != null || onRetry != null) ...[
+              SizedBox(height: compact ? 14 : 18),
+              action ?? _RetryButton(onPressed: onRetry!),
+            ],
+          ],
+        ),
+      ),
+    );
+
+    final content = panel
+        ? DecoratedBox(
+            decoration: BoxDecoration(
+              color: theme.colorScheme.surface.withValues(alpha: 0.86),
+              borderRadius: BorderRadius.circular(8),
+              border: Border.all(
+                color: theme.colorScheme.outlineVariant.withValues(alpha: 0.5),
+              ),
+              boxShadow: [
+                BoxShadow(
+                  color: Colors.black.withValues(alpha: 0.10),
+                  blurRadius: 28,
+                  offset: const Offset(0, 16),
+                ),
+              ],
+            ),
+            child: child,
+          )
+        : child;
+
+    return Center(
+      child: Padding(
+        padding: EdgeInsets.all(compact ? 16 : 32),
+        child: content,
+      ),
+    );
+  }
+}
+
+class _RetryButton extends StatelessWidget {
+  final VoidCallback onPressed;
+
+  const _RetryButton({required this.onPressed});
+
+  @override
+  Widget build(BuildContext context) {
+    return FilledButton.icon(
+      onPressed: onPressed,
+      icon: const Icon(Icons.refresh, size: 18),
+      label: const Text('重试'),
+      style: FilledButton.styleFrom(
+        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(6)),
+      ),
+    );
+  }
+}