import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  // Declare the FocusNode
  late FocusNode _focusNode;

  @override
  void initState() {
    super.initState();
    // Initialize the FocusNode
    _focusNode = FocusNode();
  }

  @override
  void dispose() {
    // Dispose of the FocusNode
    _focusNode.dispose();
    super.dispose();
  }

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text('You have pushed the button this many times:'),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
            const SizedBox(height: 20), // Add spacing
            // Add the TextField widget
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 40.0),
              child: TextField(
                focusNode: _focusNode,
                decoration: const InputDecoration(
                  labelText: 'Enter text',
                  border: OutlineInputBorder(),
                ),
              ),
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          _incrementCounter();
          // Request focus when the button is pressed
          _focusNode.requestFocus();
        },
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}

import 'package:shelf/shelf_io.dart' as io;
import 'package:shelf_plus/shelf_plus.dart' show Pipeline;
import 'package:shelf_static/shelf_static.dart';
import 'package:shelf/shelf.dart';

Map<String, String> corsHeaders = {
  'Access-Control-Allow-Origin': '*',
  'Access-Control-Allow-Headers': '*',
};

Middleware cors = createMiddleware(responseHandler: (response) {
  return response.change(headers: corsHeaders);
}, requestHandler: (request) {
  if (request.method == 'OPTIONS') {
    return Response.ok(null, headers: corsHeaders);
  }
  return null;
});

void main() async {
  Pipeline pipeline = Pipeline();

  // pipeline = pipeline.addMiddleware(shelf.logRequests());
  pipeline = pipeline.addMiddleware(cors);

  var server = await io.serve(
    pipeline.addHandler(createStaticHandler('build/web', defaultDocument: 'index.html')),
    'localhost',
    3000,
    poweredByHeader: '',
  );

  /// This will remove default headers from the server.
  server.defaultResponseHeaders.removeAll('X-Frame-Options');
  // server.defaultResponseHeaders.add('X-Frame-Options', 'null');
}