flutter/examples/api/lib/material/search_anchor/search_bar.0.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/material.dart';

/// Flutter code sample for [SearchBar].

void main() => runApp(const SearchBarApp());

class SearchBarApp extends StatefulWidget {
  const SearchBarApp({super.key});

  @override
  State<SearchBarApp> createState() => _SearchBarAppState();
}

class _SearchBarAppState extends State<SearchBarApp> {
  bool isDark = false;

  @override
  Widget build(BuildContext context) {
    final ThemeData themeData = ThemeData(useMaterial3: true, brightness: isDark ? Brightness.dark : Brightness.light);

    return MaterialApp(
      theme: themeData,
      home: Scaffold(
        appBar: AppBar(title: const Text('Search Bar Sample')),
        body: Padding(
          padding: const EdgeInsets.all(8.0),
          child: SearchAnchor(
            builder: (BuildContext context, SearchController controller) {
              return SearchBar(
                controller: controller,
                padding: const MaterialStatePropertyAll<EdgeInsets>(EdgeInsets.symmetric(horizontal: 16.0)),
                onTap: () { controller.openView(); },
                onChanged: (_) { controller.openView(); },
                leading: const Icon(Icons.search),
                trailing: <Widget>[
                  Tooltip(
                    message: 'Change brightness mode',
                    child: IconButton(
                      isSelected: isDark,
                      onPressed: () {
                        setState(() {
                          isDark = !isDark;
                        });
                      },
                      icon: const Icon(Icons.wb_sunny_outlined),
                      selectedIcon: const Icon(Icons.brightness_2_outlined),
                    ),
                  )
                ],
              );
            },
            suggestionsBuilder: (BuildContext context, SearchController controller) {
              return List<ListTile>.generate(5, (int index) {
                final String item = 'item $index';
                return ListTile(
                  title: Text(item),
                  onTap: () {
                    setState(() {
                      controller.closeView(item);
                    });
                  },
                );
              });
            }),
        ),
      ),
    );
  }
}