Hide tabs when filter isn't empty

lib/new_views/pages/land_page/my_request/my_requests_page.dart

@@ -73,6 +73,7 @@ class _MyRequestsPageState extends State<MyRequestsPage> {
                 final result = await Navigator.push(context, MaterialPageRoute(builder: (context) => AllRequestsSearchPage(data: _search)));
                 if (result != null) {
                   _search = result;
+                  setState(() {});
                 }
               }).expanded,
               16.width,
@@ -83,6 +84,7 @@ class _MyRequestsPageState extends State<MyRequestsPage> {
                 final result = await Navigator.push(context, MaterialPageRoute(builder: (context) => AllRequestsFilterPage(data: _search)));
                 if (result != null) {
                   _search = result;
+                  setState(() {});
                 }
               }),
             ],
@@ -90,6 +92,7 @@ class _MyRequestsPageState extends State<MyRequestsPage> {
         ),
         body: Column(
           children: [
+            if (_filterIsEmpty())
               SizedBox(
                 height: 34 + 16.0,
                 child: ListView.separated(
@@ -131,4 +134,19 @@ class _MyRequestsPageState extends State<MyRequestsPage> {
           ],
         ));
   }
+
+  bool _filterIsEmpty() {
+    if (_search == null) return true;
+    if ((_search.requestNumber?.value?.isNotEmpty ?? false) ||
+        (_search.assetNo?.value?.isNotEmpty ?? false) ||
+        (_search.assetName?.value?.isNotEmpty ?? false) ||
+        (_search.manufacture?.value?.isNotEmpty ?? false) ||
+        (_search.sn?.value?.isNotEmpty ?? false) ||
+        (_search.statuses?.isNotEmpty ?? false) ||
+        (_search.startDate != null) ||
+        (_search.endDate != null)) {
+      return false;
+    }
+    return true;
+  }
 }