// Copyright 2022 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 'dart:async';

import 'package:flutter/material.dart';

import 'guest_book_message.dart';

import 'src/widgets.dart';

class GuestBook extends StatefulWidget {

const GuestBook({

super.key,

required this.addMessage,

required this.messages,

});

final FutureOr<void> Function(String message) addMessage;

final List<GuestBookMessage> messages;

@override

State<GuestBook> createState() => _GuestBookState();

}

class _GuestBookState extends State<GuestBook> {

final _formKey = GlobalKey<FormState>(debugLabel: '_GuestBookState');

final _controller = TextEditingController();

@override

Widget build(BuildContext context) {

return Column(

crossAxisAlignment: CrossAxisAlignment.start,

children: [

Padding(

padding: const EdgeInsets.all(8.0),

child: Form(

key: _formKey,

child: Row(

children: [

Expanded(

child: TextFormField(

controller: _controller,

decoration: const InputDecoration(

hintText: 'Leave a message',

),

validator: (value) {

if (value == null || value.isEmpty) {

return 'Enter your message to continue';

}

return null;

},

),

),

const SizedBox(width: 8),

StyledButton(

onPressed: () async {

if (_formKey.currentState!.validate()) {

await widget.addMessage(_controller.text);

_controller.clear();

}

},

child: const Row(

children: [

Icon(Icons.send),

SizedBox(width: 4),

Text('SEND'),

],

),

),

],

),

),

),

const SizedBox(height: 8),

for (var message in widget.messages)

Paragraph('${message.name}: ${message.message}'),

const SizedBox(height: 8),

],

);

}

@override

void dispose() {

_controller.dispose();

super.dispose();

}

}