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@ -8,7 +8,7 @@ import 'package:flutter_module_books/api.dart';
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void main() => runApp(const MyApp());
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class MyApp extends StatelessWidget {
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const MyApp({Key key}) : super(key: key);
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const MyApp({Key? key}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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@ -30,30 +30,28 @@ class FlutterBookApiHandler extends FlutterBookApi {
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@override
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void displayBookDetails(Book book) {
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assert(
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book != null,
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'Non-null book expected from FlutterBookApi.displayBookDetails call.',
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);
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callback(book);
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}
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}
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class BookDetail extends StatefulWidget {
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const BookDetail({this.hostApi, this.flutterApi, Key key}) : super(key: key);
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const BookDetail({Key? key, this.hostApi, this.flutterApi, this.book})
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: super(key: key);
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// These are the outgoing and incoming APIs that are here for injection for
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// tests.
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final HostBookApi hostApi;
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final FlutterBookApi flutterApi;
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final HostBookApi? hostApi;
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final FlutterBookApi? flutterApi;
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final Book? book;
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@override
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_BookDetailState createState() => _BookDetailState();
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State<BookDetail> createState() => _BookDetailState();
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}
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class _BookDetailState extends State<BookDetail> {
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Book book;
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Book? book;
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HostBookApi hostApi;
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late HostBookApi hostApi;
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FocusNode textFocusNode = FocusNode();
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TextEditingController titleTextController = TextEditingController();
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@ -63,6 +61,7 @@ class _BookDetailState extends State<BookDetail> {
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@override
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void initState() {
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super.initState();
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book = widget.book;
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// This `HostBookApi` class instance lets us make outgoing calls to the
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// platform.
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@ -80,19 +79,19 @@ class _BookDetailState extends State<BookDetail> {
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// This book model is what we're going to return to Kotlin eventually.
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// Keep it bound to the UI.
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this.book = book;
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titleTextController.text = book.title;
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titleTextController.text = book.title ?? '';
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titleTextController.addListener(() {
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this.book?.title = titleTextController.text;
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this.book!.title = titleTextController.text;
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});
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// Subtitle could be null.
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// TODO(gaaclarke): https://github.com/flutter/flutter/issues/59118.
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subtitleTextController.text = book.subtitle ?? '';
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subtitleTextController.addListener(() {
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this.book?.subtitle = subtitleTextController.text;
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this.book!.subtitle = subtitleTextController.text;
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});
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authorTextController.text = book.author;
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authorTextController.text = book.author ?? '';
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authorTextController.addListener(() {
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this.book?.author = authorTextController.text;
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this.book!.author = authorTextController.text;
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});
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});
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}));
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@ -123,10 +122,12 @@ class _BookDetailState extends State<BookDetail> {
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IconButton(
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icon: const Icon(Icons.check),
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// Pressing save sends the updated book to the platform.
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onPressed: () {
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hostApi.finishEditingBook(book);
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clear();
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},
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onPressed: book != null
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? () {
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hostApi.finishEditingBook(book!);
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clear();
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}
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: null,
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),
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],
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),
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@ -134,70 +135,98 @@ class _BookDetailState extends State<BookDetail> {
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// Draw a spinner until the platform gives us the book to show details
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// for.
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? const Center(child: CircularProgressIndicator())
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: Focus(
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: BookForm(
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book: book!,
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focusNode: textFocusNode,
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child: ListView(
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padding: const EdgeInsets.all(24),
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children: [
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TextField(
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controller: titleTextController,
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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filled: true,
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hintText: "Title",
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labelText: "Title",
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),
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),
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const SizedBox(height: 24),
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TextField(
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controller: subtitleTextController,
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maxLines: 2,
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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filled: true,
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hintText: "Subtitle",
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labelText: "Subtitle",
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),
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),
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const SizedBox(height: 24),
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TextField(
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controller: authorTextController,
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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filled: true,
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hintText: "Author",
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labelText: "Author",
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),
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),
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const SizedBox(height: 32),
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const Divider(),
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Center(
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child: Padding(
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padding: const EdgeInsets.all(8.0),
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child: Text(
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'${book.pageCount} pages ~ published ${book.publishDate}'),
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),
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),
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const Divider(),
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const SizedBox(height: 32),
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const Center(
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child: Text(
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'BOOK DESCRIPTION',
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style: TextStyle(
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fontSize: 15,
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fontWeight: FontWeight.bold,
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decoration: TextDecoration.underline,
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),
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),
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),
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const SizedBox(height: 12),
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Text(
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book.summary,
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style: TextStyle(color: Colors.grey.shade600, height: 1.24),
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),
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],
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authorTextController: authorTextController,
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subtitleTextController: subtitleTextController,
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titleTextController: titleTextController,
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),
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);
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}
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}
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class BookForm extends StatelessWidget {
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const BookForm({
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Key? key,
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required this.book,
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required this.focusNode,
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required this.authorTextController,
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required this.subtitleTextController,
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required this.titleTextController,
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}) : super(key: key);
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final Book book;
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final FocusNode focusNode;
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final TextEditingController titleTextController;
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final TextEditingController subtitleTextController;
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final TextEditingController authorTextController;
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@override
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Widget build(BuildContext context) {
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return Focus(
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focusNode: focusNode,
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child: ListView(
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padding: const EdgeInsets.all(24),
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children: [
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TextField(
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controller: titleTextController,
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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filled: true,
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hintText: "Title",
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labelText: "Title",
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),
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),
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const SizedBox(height: 24),
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TextField(
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controller: subtitleTextController,
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maxLines: 2,
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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filled: true,
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hintText: "Subtitle",
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labelText: "Subtitle",
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),
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),
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const SizedBox(height: 24),
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TextField(
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controller: authorTextController,
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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filled: true,
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hintText: "Author",
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labelText: "Author",
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),
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),
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const SizedBox(height: 32),
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const Divider(),
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Center(
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child: Padding(
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padding: const EdgeInsets.all(8.0),
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child: Text(
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'${book.pageCount} pages ~ published ${book.publishDate}'),
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),
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),
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const Divider(),
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const SizedBox(height: 32),
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const Center(
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child: Text(
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'BOOK DESCRIPTION',
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style: TextStyle(
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fontSize: 15,
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fontWeight: FontWeight.bold,
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decoration: TextDecoration.underline,
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),
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),
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),
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const SizedBox(height: 12),
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Text(
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book.summary ?? '',
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style: TextStyle(color: Colors.grey.shade600, height: 1.24),
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),
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],
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),
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);
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}
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}
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Brett Morgan
2 years ago
committed by
GitHub