Allow search widget to be constructed with or without an app bar

lib/widget/drawer.dart

@@ -41,7 +41,7 @@ class InvenTreeDrawer extends StatelessWidget {
     Navigator.push(
         context,
         MaterialPageRoute(
-            builder: (context) => SearchWidget()
+            builder: (context) => SearchWidget(true)
         )
     );
   }

lib/widget/home.dart

@@ -55,7 +55,6 @@ class _InvenTreeHomePageState extends State<InvenTreeHomePage> {
   // Selected user profile
   UserProfile? _profile;
 
-
   void _scan(BuildContext context) {
     if (!InvenTreeAPI().checkConnection(context)) return;
 
@@ -316,7 +315,7 @@ class _InvenTreeHomePageState extends State<InvenTreeHomePage> {
   Widget getBody(BuildContext context) {
     switch (_tabIndex) {
       case 1: // Search widget
-        return SearchWidget();
+        return SearchWidget(false);
       case 2: // Notification widget
       case 0: // Home widget
       default:

lib/widget/refreshable_state.dart

@@ -80,6 +80,14 @@ abstract class RefreshableState<T extends StatefulWidget> extends State<T> {
     return null;
   }
 
+  AppBar? buildAppBar(BuildContext context) {
+    return AppBar(
+      title: Text(getAppBarTitle(context)),
+      actions: getAppBarActions(context),
+      leading: backButton(context, refreshableKey),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
 
@@ -88,11 +96,7 @@ abstract class RefreshableState<T extends StatefulWidget> extends State<T> {
 
     return Scaffold(
       key: refreshableKey,
-      appBar: AppBar(
-        title: Text(getAppBarTitle(context)),
-        actions: getAppBarActions(context),
-        leading: backButton(context, refreshableKey),
-      ),
+      appBar: buildAppBar(context),
       drawer: getDrawer(context),
       floatingActionButton: getFab(context),
       body: Builder(

lib/widget/search.dart

@@ -21,16 +21,33 @@ import "package:inventree/widget/location_list.dart";
 // Widget for performing database-wide search
 class SearchWidget extends StatefulWidget {
 
+  SearchWidget(this.hasAppbar);
+
+  final bool hasAppbar;
+
   @override
-  _SearchDisplayState createState() => _SearchDisplayState();
+  _SearchDisplayState createState() => _SearchDisplayState(hasAppbar);
 
 }
 
-class _SearchDisplayState extends State<SearchWidget> {
+class _SearchDisplayState extends RefreshableState<SearchWidget> {
+
+  _SearchDisplayState(this.hasAppBar) : super();
+
+  final bool hasAppBar;
 
   @override
   String getAppBarTitle(BuildContext context) => L10().search;
 
+  @override
+  AppBar? buildAppBar(BuildContext context) {
+    if (hasAppBar) {
+      return super.buildAppBar(context);
+    } else {
+      return null;
+    }
+  }
+
   final TextEditingController searchController = TextEditingController();
 
   Timer? debounceTimer;
@@ -333,7 +350,7 @@ class _SearchDisplayState extends State<SearchWidget> {
   }
 
   @override
-  Widget build(BuildContext context) {
+  Widget getBody(BuildContext context) {
     return Center(
       child: ListView(
         children: ListTile.divideTiles(