merge material 3

lib/pages/carton_search/carton_search.dart

@@ -5,6 +5,7 @@ import 'package:fcs/pages/widgets/barcode_scanner.dart';
 import 'package:fcs/pages/widgets/local_popup_menu_button.dart';
 import 'package:fcs/pages/widgets/local_popupmenu.dart';
 import 'package:fcs/pagination/paginator_listview.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_vector_icons/flutter_vector_icons.dart';
 import 'package:provider/provider.dart';
@@ -32,13 +33,15 @@ class PartSearchDelegate extends SearchDelegate<Carton> {
     final ThemeData theme = Theme.of(context);
     return theme.copyWith(
       appBarTheme: AppBarTheme(color: primaryColor),
+      iconButtonTheme: IconButtonThemeData(
+          style: ButtonStyle(
+              iconColor: MaterialStateProperty.all<Color>(Colors.white))),
       inputDecorationTheme: InputDecorationTheme(
           border: InputBorder.none,
-          hintStyle: TextStyle(
-              color: theme.primaryTextTheme.caption?.color, fontSize: 14)),
+          hintStyle: TextStyle(color: Colors.grey, fontSize: 14)),
       textTheme: TextTheme(
-          headline1: TextStyle(
-              color: theme.primaryTextTheme.headline1?.color,
+          displayLarge: TextStyle(
+              color: theme.primaryTextTheme.displayLarge?.color,
               fontSize: 16,
               backgroundColor: primaryColor)),
       primaryColor: primaryColor,
@@ -83,7 +86,7 @@ class PartSearchDelegate extends SearchDelegate<Carton> {
   @override
   Widget buildLeading(BuildContext context) {
     return IconButton(
-      icon: Icon(Icons.arrow_back),
+      icon: Icon(CupertinoIcons.back),
       onPressed: () => close(context, new Carton()),
     );
   }