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Code Issues Releases Wiki Activity

Flutter 3.29 beta (#2571)

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This commit is contained in:
Eric Windmill
2025-02-12 18:08:01 -05:00
committed by GitHub
parent d62c784789
commit 719fd72c38
685 changed files with 76244 additions and 53721 deletions
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12
navigation_and_routing/lib/main.dart
View File

@@ -37,11 +37,13 @@ void setupWindow() {
setWindowMinSize(const Size(windowWidth, windowHeight));
setWindowMaxSize(const Size(windowWidth, windowHeight));
getCurrentScreen().then((screen) {
setWindowFrame(Rect.fromCenter(
center: screen!.frame.center,
width: windowWidth,
height: windowHeight,
));
setWindowFrame(
Rect.fromCenter(
center: screen!.frame.center,
width: windowWidth,
height: windowHeight,
),
);
});
}
}

129
navigation_and_routing/lib/src/app.dart
View File

@@ -37,10 +37,7 @@ class _BookstoreState extends State<Bookstore> {
if (child == null) {
throw ('No child in .router constructor builder');
}
return BookstoreAuthScope(
notifier: auth,
child: child,
);
return BookstoreAuthScope(notifier: auth, child: child);
},
routerConfig: GoRouter(
refreshListenable: auth,
@@ -74,25 +71,27 @@ class _BookstoreState extends State<Bookstore> {
key: state.pageKey,
// Use a builder to get the correct BuildContext
// TODO (johnpryan): remove when https://github.com/flutter/flutter/issues/108177 lands
child: Builder(builder: (context) {
return BooksScreen(
onTap: (idx) {
GoRouter.of(context).go(switch (idx) {
0 => '/books/popular',
1 => '/books/new',
2 => '/books/all',
_ => '/books/popular',
});
},
selectedIndex: switch (state.uri.path) {
var p when p.startsWith('/books/popular') => 0,
var p when p.startsWith('/books/new') => 1,
var p when p.startsWith('/books/all') => 2,
_ => 0,
},
child: child,
);
}),
child: Builder(
builder: (context) {
return BooksScreen(
onTap: (idx) {
GoRouter.of(context).go(switch (idx) {
0 => '/books/popular',
1 => '/books/new',
2 => '/books/all',
_ => '/books/popular',
});
},
selectedIndex: switch (state.uri.path) {
var p when p.startsWith('/books/popular') => 0,
var p when p.startsWith('/books/new') => 1,
var p when p.startsWith('/books/all') => 2,
_ => 0,
},
child: child,
);
},
),
);
},
routes: [
@@ -108,8 +107,9 @@ class _BookstoreState extends State<Bookstore> {
return BookList(
books: libraryInstance.popularBooks,
onTap: (book) {
GoRouter.of(context)
.go('/books/popular/book/${book.id}');
GoRouter.of(
context,
).go('/books/popular/book/${book.id}');
},
);
},
@@ -122,8 +122,9 @@ class _BookstoreState extends State<Bookstore> {
parentNavigatorKey: appShellNavigatorKey,
builder: (context, state) {
return BookDetailsScreen(
book: libraryInstance
.getBook(state.pathParameters['bookId'] ?? ''),
book: libraryInstance.getBook(
state.pathParameters['bookId'] ?? '',
),
);
},
),
@@ -141,8 +142,9 @@ class _BookstoreState extends State<Bookstore> {
return BookList(
books: libraryInstance.newBooks,
onTap: (book) {
GoRouter.of(context)
.go('/books/new/book/${book.id}');
GoRouter.of(
context,
).go('/books/new/book/${book.id}');
},
);
},
@@ -155,8 +157,9 @@ class _BookstoreState extends State<Bookstore> {
parentNavigatorKey: appShellNavigatorKey,
builder: (context, state) {
return BookDetailsScreen(
book: libraryInstance
.getBook(state.pathParameters['bookId'] ?? ''),
book: libraryInstance.getBook(
state.pathParameters['bookId'] ?? '',
),
);
},
),
@@ -174,8 +177,9 @@ class _BookstoreState extends State<Bookstore> {
return BookList(
books: libraryInstance.allBooks,
onTap: (book) {
GoRouter.of(context)
.go('/books/all/book/${book.id}');
GoRouter.of(
context,
).go('/books/all/book/${book.id}');
},
);
},
@@ -188,8 +192,9 @@ class _BookstoreState extends State<Bookstore> {
parentNavigatorKey: appShellNavigatorKey,
builder: (context, state) {
return BookDetailsScreen(
book: libraryInstance
.getBook(state.pathParameters['bookId'] ?? ''),
book: libraryInstance.getBook(
state.pathParameters['bookId'] ?? '',
),
);
},
),
@@ -202,14 +207,17 @@ class _BookstoreState extends State<Bookstore> {
pageBuilder: (context, state) {
return FadeTransitionPage<dynamic>(
key: state.pageKey,
child: Builder(builder: (context) {
return AuthorsScreen(
onTap: (author) {
GoRouter.of(context)
.go('/authors/author/${author.id}');
},
);
}),
child: Builder(
builder: (context) {
return AuthorsScreen(
onTap: (author) {
GoRouter.of(
context,
).go('/authors/author/${author.id}');
},
);
},
),
);
},
routes: [
@@ -217,22 +225,26 @@ class _BookstoreState extends State<Bookstore> {
path: 'author/:authorId',
builder: (context, state) {
final author = libraryInstance.allAuthors.firstWhere(
(author) =>
author.id ==
int.parse(state.pathParameters['authorId']!));
(author) =>
author.id ==
int.parse(state.pathParameters['authorId']!),
);
// Use a builder to get the correct BuildContext
// TODO (johnpryan): remove when https://github.com/flutter/flutter/issues/108177 lands
return Builder(builder: (context) {
return AuthorDetailsScreen(
author: author,
onBookTapped: (book) {
GoRouter.of(context)
.go('/books/all/book/${book.id}');
},
);
});
return Builder(
builder: (context) {
return AuthorDetailsScreen(
author: author,
onBookTapped: (book) {
GoRouter.of(
context,
).go('/books/all/book/${book.id}');
},
);
},
);
},
)
),
],
),
GoRoute(
@@ -256,8 +268,9 @@ class _BookstoreState extends State<Bookstore> {
return SignInScreen(
onSignIn: (value) async {
final router = GoRouter.of(context);
await BookstoreAuth.of(context)
.signIn(value.username, value.password);
await BookstoreAuth.of(
context,
).signIn(value.username, value.password);
router.go('/books/popular');
},
);

7
navigation_and_routing/lib/src/auth.dart
View File

@@ -33,9 +33,10 @@ class BookstoreAuth extends ChangeNotifier {
@override
int get hashCode => _signedIn.hashCode;
static BookstoreAuth of(BuildContext context) => context
.dependOnInheritedWidgetOfExactType<BookstoreAuthScope>()!
.notifier!;
static BookstoreAuth of(BuildContext context) =>
context
.dependOnInheritedWidgetOfExactType<BookstoreAuthScope>()!
.notifier!;
}
class BookstoreAuthScope extends InheritedNotifier<BookstoreAuth> {

55
navigation_and_routing/lib/src/data/library.dart
View File

@@ -5,27 +5,32 @@
import 'author.dart';
import 'book.dart';
final libraryInstance = Library()
..addBook(
title: 'Left Hand of Darkness',
authorName: 'Ursula K. Le Guin',
isPopular: true,
isNew: true)
..addBook(
title: 'Too Like the Lightning',
authorName: 'Ada Palmer',
isPopular: false,
isNew: true)
..addBook(
title: 'Kindred',
authorName: 'Octavia E. Butler',
isPopular: true,
isNew: false)
..addBook(
title: 'The Lathe of Heaven',
authorName: 'Ursula K. Le Guin',
isPopular: false,
isNew: false);
final libraryInstance =
Library()
..addBook(
title: 'Left Hand of Darkness',
authorName: 'Ursula K. Le Guin',
isPopular: true,
isNew: true,
)
..addBook(
title: 'Too Like the Lightning',
authorName: 'Ada Palmer',
isPopular: false,
isNew: true,
)
..addBook(
title: 'Kindred',
authorName: 'Octavia E. Butler',
isPopular: true,
isNew: false,
)
..addBook(
title: 'The Lathe of Heaven',
authorName: 'Ursula K. Le Guin',
isPopular: false,
isNew: false,
);
class Library {
final List<Book> allBooks = [];
@@ -55,11 +60,7 @@ class Library {
return allBooks[int.parse(id)];
}
List<Book> get popularBooks => [
...allBooks.where((book) => book.isPopular),
];
List<Book> get popularBooks => [...allBooks.where((book) => book.isPopular)];
List<Book> get newBooks => [
...allBooks.where((book) => book.isNew),
];
List<Book> get newBooks => [...allBooks.where((book) => book.isNew)];
}

32
navigation_and_routing/lib/src/screens/author_details.dart
View File

@@ -19,22 +19,20 @@ class AuthorDetailsScreen extends StatelessWidget {
@override
Widget build(BuildContext context) => Scaffold(
appBar: AppBar(
title: Text(author.name),
),
body: Center(
child: Column(
children: [
Expanded(
child: BookList(
books: author.books,
onTap: (book) {
onBookTapped(book);
},
),
),
],
appBar: AppBar(title: Text(author.name)),
body: Center(
child: Column(
children: [
Expanded(
child: BookList(
books: author.books,
onTap: (book) {
onBookTapped(book);
},
),
),
),
);
],
),
),
);
}

17
navigation_and_routing/lib/src/screens/authors.dart
View File

@@ -12,20 +12,11 @@ class AuthorsScreen extends StatelessWidget {
final String title;
final ValueChanged<Author> onTap;
const AuthorsScreen({
required this.onTap,
this.title = 'Authors',
super.key,
});
const AuthorsScreen({required this.onTap, this.title = 'Authors', super.key});
@override
Widget build(BuildContext context) => Scaffold(
appBar: AppBar(
title: Text(title),
),
body: AuthorList(
authors: libraryInstance.allAuthors,
onTap: onTap,
),
);
appBar: AppBar(title: Text(title)),
body: AuthorList(authors: libraryInstance.allAuthors, onTap: onTap),
);
}

39
navigation_and_routing/lib/src/screens/book_details.dart
View File

@@ -12,24 +12,15 @@ import 'author_details.dart';
class BookDetailsScreen extends StatelessWidget {
final Book? book;
const BookDetailsScreen({
super.key,
this.book,
});
const BookDetailsScreen({super.key, this.book});
@override
Widget build(BuildContext context) {
if (book == null) {
return const Scaffold(
body: Center(
child: Text('No book found.'),
),
);
return const Scaffold(body: Center(child: Text('No book found.')));
}
return Scaffold(
appBar: AppBar(
title: Text(book!.title),
),
appBar: AppBar(title: Text(book!.title)),
body: Center(
child: Column(
children: [
@@ -46,22 +37,26 @@ class BookDetailsScreen extends StatelessWidget {
onPressed: () {
Navigator.of(context).push<void>(
MaterialPageRoute<void>(
builder: (context) => AuthorDetailsScreen(
author: book!.author,
onBookTapped: (book) {
GoRouter.of(context).go('/books/all/book/${book.id}');
},
),
builder:
(context) => AuthorDetailsScreen(
author: book!.author,
onBookTapped: (book) {
GoRouter.of(
context,
).go('/books/all/book/${book.id}');
},
),
),
);
},
),
Link(
uri: Uri.parse('/authors/author/${book!.author.id}'),
builder: (context, followLink) => TextButton(
onPressed: followLink,
child: const Text('View author (Link)'),
),
builder:
(context, followLink) => TextButton(
onPressed: followLink,
child: const Text('View author (Link)'),
),
),
],
),

15
navigation_and_routing/lib/src/screens/books.dart
View File

@@ -46,18 +46,9 @@ class _BooksScreenState extends State<BooksScreen>
bottom: TabBar(
controller: _tabController,
tabs: const [
Tab(
text: 'Popular',
icon: Icon(Icons.people),
),
Tab(
text: 'New',
icon: Icon(Icons.new_releases),
),
Tab(
text: 'All',
icon: Icon(Icons.list),
),
Tab(text: 'Popular', icon: Icon(Icons.people)),
Tab(text: 'New', icon: Icon(Icons.new_releases)),
Tab(text: 'All', icon: Icon(Icons.list)),
],
),
),

15
navigation_and_routing/lib/src/screens/scaffold.dart
View File

@@ -30,18 +30,9 @@ class BookstoreScaffold extends StatelessWidget {
if (idx == 2) goRouter.go('/settings');
},
destinations: const [
AdaptiveScaffoldDestination(
title: 'Books',
icon: Icons.book,
),
AdaptiveScaffoldDestination(
title: 'Authors',
icon: Icons.person,
),
AdaptiveScaffoldDestination(
title: 'Settings',
icon: Icons.settings,
),
AdaptiveScaffoldDestination(title: 'Books', icon: Icons.book),
AdaptiveScaffoldDestination(title: 'Authors', icon: Icons.person),
AdaptiveScaffoldDestination(title: 'Settings', icon: Icons.settings),
],
),
);

120
navigation_and_routing/lib/src/screens/settings.dart
View File

@@ -18,81 +18,79 @@ class SettingsScreen extends StatefulWidget {
class _SettingsScreenState extends State<SettingsScreen> {
@override
Widget build(BuildContext context) => Scaffold(
body: SafeArea(
child: SingleChildScrollView(
child: Align(
alignment: Alignment.topCenter,
child: ConstrainedBox(
constraints: const BoxConstraints(maxWidth: 400),
child: const Card(
child: Padding(
padding: EdgeInsets.symmetric(vertical: 18, horizontal: 12),
child: SettingsContent(),
),
),
body: SafeArea(
child: SingleChildScrollView(
child: Align(
alignment: Alignment.topCenter,
child: ConstrainedBox(
constraints: const BoxConstraints(maxWidth: 400),
child: const Card(
child: Padding(
padding: EdgeInsets.symmetric(vertical: 18, horizontal: 12),
child: SettingsContent(),
),
),
),
),
);
),
),
);
}
class SettingsContent extends StatelessWidget {
const SettingsContent({
super.key,
});
const SettingsContent({super.key});
@override
Widget build(BuildContext context) => Column(
children: [
...[
Text(
'Settings',
style: Theme.of(context).textTheme.headlineMedium,
),
FilledButton(
onPressed: () {
BookstoreAuth.of(context).signOut();
},
child: const Text('Sign out'),
),
const Text('Example using the Link widget:'),
Link(
uri: Uri.parse('/books/all/book/0'),
builder: (context, followLink) => TextButton(
children: [
...[
Text('Settings', style: Theme.of(context).textTheme.headlineMedium),
FilledButton(
onPressed: () {
BookstoreAuth.of(context).signOut();
},
child: const Text('Sign out'),
),
const Text('Example using the Link widget:'),
Link(
uri: Uri.parse('/books/all/book/0'),
builder:
(context, followLink) => TextButton(
onPressed: followLink,
child: const Text('/books/all/book/0'),
),
),
const Text('Example using GoRouter.of(context).go():'),
TextButton(
child: const Text('/books/all/book/0'),
onPressed: () {
GoRouter.of(context).go('/books/all/book/0');
},
),
].map((w) => Padding(padding: const EdgeInsets.all(8), child: w)),
const Text('Displays a dialog on the root Navigator:'),
TextButton(
onPressed: () => showDialog<String>(
),
const Text('Example using GoRouter.of(context).go():'),
TextButton(
child: const Text('/books/all/book/0'),
onPressed: () {
GoRouter.of(context).go('/books/all/book/0');
},
),
].map((w) => Padding(padding: const EdgeInsets.all(8), child: w)),
const Text('Displays a dialog on the root Navigator:'),
TextButton(
onPressed:
() => showDialog<String>(
context: context,
builder: (context) => AlertDialog(
title: const Text('Alert!'),
content: const Text('The alert description goes here.'),
actions: [
TextButton(
onPressed: () => Navigator.pop(context, 'Cancel'),
child: const Text('Cancel'),
builder:
(context) => AlertDialog(
title: const Text('Alert!'),
content: const Text('The alert description goes here.'),
actions: [
TextButton(
onPressed: () => Navigator.pop(context, 'Cancel'),
child: const Text('Cancel'),
),
TextButton(
onPressed: () => Navigator.pop(context, 'OK'),
child: const Text('OK'),
),
],
),
TextButton(
onPressed: () => Navigator.pop(context, 'OK'),
child: const Text('OK'),
),
],
),
),
child: const Text('Show Dialog'),
)
],
);
child: const Text('Show Dialog'),
),
],
);
}

78
navigation_and_routing/lib/src/screens/sign_in.dart
View File

@@ -14,10 +14,7 @@ class Credentials {
class SignInScreen extends StatefulWidget {
final ValueChanged<Credentials> onSignIn;
const SignInScreen({
required this.onSignIn,
super.key,
});
const SignInScreen({required this.onSignIn, super.key});
@override
State<SignInScreen> createState() => _SignInScreenState();
@@ -29,41 +26,46 @@ class _SignInScreenState extends State<SignInScreen> {
@override
Widget build(BuildContext context) => Scaffold(
body: Center(
child: Card(
child: Container(
constraints: BoxConstraints.loose(const Size(600, 600)),
padding: const EdgeInsets.all(8),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: [
Text('Sign in',
style: Theme.of(context).textTheme.headlineMedium),
TextField(
decoration: const InputDecoration(labelText: 'Username'),
controller: _usernameController,
),
TextField(
decoration: const InputDecoration(labelText: 'Password'),
obscureText: true,
controller: _passwordController,
),
Padding(
padding: const EdgeInsets.all(16),
child: TextButton(
onPressed: () async {
widget.onSignIn(Credentials(
_usernameController.value.text,
_passwordController.value.text));
},
child: const Text('Sign in'),
),
),
],
body: Center(
child: Card(
child: Container(
constraints: BoxConstraints.loose(const Size(600, 600)),
padding: const EdgeInsets.all(8),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: [
Text(
'Sign in',
style: Theme.of(context).textTheme.headlineMedium,
),
),
TextField(
decoration: const InputDecoration(labelText: 'Username'),
controller: _usernameController,
),
TextField(
decoration: const InputDecoration(labelText: 'Password'),
obscureText: true,
controller: _passwordController,
),
Padding(
padding: const EdgeInsets.all(16),
child: TextButton(
onPressed: () async {
widget.onSignIn(
Credentials(
_usernameController.value.text,
_passwordController.value.text,
),
);
},
child: const Text('Sign in'),
),
),
],
),
),
);
),
),
);
}

21
navigation_and_routing/lib/src/widgets/author_list.dart
View File

@@ -10,23 +10,16 @@ class AuthorList extends StatelessWidget {
final List<Author> authors;
final ValueChanged<Author>? onTap;
const AuthorList({
required this.authors,
this.onTap,
super.key,
});
const AuthorList({required this.authors, this.onTap, super.key});
@override
Widget build(BuildContext context) => ListView.builder(
itemCount: authors.length,
itemBuilder: (context, index) => ListTile(
title: Text(
authors[index].name,
),
subtitle: Text(
'${authors[index].books.length} books',
),
itemCount: authors.length,
itemBuilder:
(context, index) => ListTile(
title: Text(authors[index].name),
subtitle: Text('${authors[index].books.length} books'),
onTap: onTap != null ? () => onTap!(authors[index]) : null,
),
);
);
}

21
navigation_and_routing/lib/src/widgets/book_list.dart
View File

@@ -10,23 +10,16 @@ class BookList extends StatelessWidget {
final List<Book> books;
final ValueChanged<Book>? onTap;
const BookList({
required this.books,
this.onTap,
super.key,
});
const BookList({required this.books, this.onTap, super.key});
@override
Widget build(BuildContext context) => ListView.builder(
itemCount: books.length,
itemBuilder: (context, index) => ListTile(
title: Text(
books[index].title,
),
subtitle: Text(
books[index].author.name,
),
itemCount: books.length,
itemBuilder:
(context, index) => ListTile(
title: Text(books[index].title),
subtitle: Text(books[index].author.name),
onTap: onTap != null ? () => onTap!(books[index]) : null,
),
);
);
}

16
navigation_and_routing/lib/src/widgets/fade_transition_page.dart
View File

@@ -37,8 +37,11 @@ class PageBasedFadeTransitionRoute<T> extends PageRoute<T> {
bool get maintainState => true;
@override
Widget buildPage(BuildContext context, Animation<double> animation,
Animation<double> secondaryAnimation) {
Widget buildPage(
BuildContext context,
Animation<double> animation,
Animation<double> secondaryAnimation,
) {
var curveTween = CurveTween(curve: Curves.easeIn);
return FadeTransition(
opacity: animation.drive(curveTween),
@@ -47,7 +50,10 @@ class PageBasedFadeTransitionRoute<T> extends PageRoute<T> {
}
@override
Widget buildTransitions(BuildContext context, Animation<double> animation,
Animation<double> secondaryAnimation, Widget child) =>
child;
Widget buildTransitions(
BuildContext context,
Animation<double> animation,
Animation<double> secondaryAnimation,
Widget child,
) => child;
}