马良AI写作初始化仓库

AINoval/lib/ui/common/loading_indicator.dart

@@ -0,0 +1,37 @@
+import 'package:flutter/material.dart';
+import 'package:ainoval/utils/web_theme.dart';
+
+/// 加载指示器组件
+class LoadingIndicator extends StatelessWidget {
+  
+  const LoadingIndicator({
+    Key? key,
+    this.message,
+    this.color,
+  }) : super(key: key);
+  final String? message;
+  final Color? color;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      mainAxisAlignment: MainAxisAlignment.center,
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        CircularProgressIndicator(
+          valueColor: AlwaysStoppedAnimation<Color>(
+            color ?? WebTheme.getPrimaryColor(context),
+          ),
+        ),
+        if (message != null) ...[
+          const SizedBox(height: 16),
+          Text(
+            message!,
+            style: Theme.of(context).textTheme.bodyMedium,
+            textAlign: TextAlign.center,
+          ),
+        ],
+      ],
+    );
+  }
+} 

AINoval/lib/ui/common/no_data_placeholder.dart

@@ -0,0 +1,44 @@
+import 'package:flutter/material.dart';
+
+/// 无数据占位符组件
+class NoDataPlaceholder extends StatelessWidget {
+  
+  const NoDataPlaceholder({
+    Key? key,
+    required this.message,
+    required this.icon,
+    this.color,
+    this.size = 64,
+  }) : super(key: key);
+  final String message;
+  final IconData icon;
+  final Color? color;
+  final double size;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Icon(
+            icon,
+            size: size,
+            color: color ?? theme.disabledColor.withOpacity(0.5),
+          ),
+          const SizedBox(height: 16),
+          Text(
+            message,
+            style: theme.textTheme.bodyLarge?.copyWith(
+              color: theme.textTheme.bodyLarge?.color?.withOpacity(0.6),
+            ),
+            textAlign: TextAlign.center,
+          ),
+        ],
+      ),
+    );
+  }
+}