feat: up搜索

lib/pages/follow/view.dart

@@ -37,6 +37,29 @@ class _FollowPageState extends State<FollowPage> {
               : '${_followController.name}的关注',
           style: Theme.of(context).textTheme.titleMedium,
         ),
+        actions: [
+          IconButton(
+            onPressed: () => Get.toNamed('/followSearch?mid=$mid'),
+            icon: const Icon(Icons.search_outlined),
+          ),
+          PopupMenuButton(
+            icon: const Icon(Icons.more_vert),
+            itemBuilder: (BuildContext context) => <PopupMenuEntry>[
+              PopupMenuItem(
+                onTap: () => Get.toNamed('/blackListPage'),
+                child: const Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Icon(Icons.block, size: 19),
+                    SizedBox(width: 10),
+                    Text('黑名单管理'),
+                  ],
+                ),
+              )
+            ],
+          ),
+          const SizedBox(width: 6),
+        ],
       ),
       body: Obx(
         () => !_followController.isOwner.value
@@ -87,3 +110,22 @@ class _FollowPageState extends State<FollowPage> {
     );
   }
 }
+
+class _FakeAPI {
+  static const List<String> _kOptions = <String>[
+    'aardvark',
+    'bobcat',
+    'chameleon',
+  ];
+  // Searches the options, but injects a fake "network" delay.
+  static Future<Iterable<String>> search(String query) async {
+    await Future<void>.delayed(
+        const Duration(seconds: 1)); // Fake 1 second delay.
+    if (query == '') {
+      return const Iterable<String>.empty();
+    }
+    return _kOptions.where((String option) {
+      return option.contains(query.toLowerCase());
+    });
+  }
+}

lib/pages/follow/widgets/follow_item.dart

@@ -42,7 +42,7 @@ class FollowItem extends StatelessWidget {
         overflow: TextOverflow.ellipsis,
       ),
       dense: true,
-      trailing: ctr!.isOwner.value
+      trailing: ctr != null && ctr!.isOwner.value
           ? SizedBox(
               height: 34,
               child: TextButton(