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lib/13/go/raw_book/src/app.dart

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+// Copyright 2021, the Flutter project authors. Please see the AUTHORS file
+// for details. 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';
+
+import 'auth.dart';
+import 'routing.dart';
+import 'screens/navigator.dart';
+
+class Bookstore extends StatefulWidget {
+  const Bookstore({super.key});
+
+  @override
+  State<Bookstore> createState() => _BookstoreState();
+}
+
+class _BookstoreState extends State<Bookstore> {
+  late final RouteState _routeState;
+  late final SimpleRouterDelegate _routerDelegate;
+  late final TemplateRouteParser _routeParser;
+
+  @override
+  void initState() {
+    /// Configure the parser with all of the app's allowed path templates.
+    _routeParser = TemplateRouteParser(
+      allowedPaths: [
+        '/signin',
+        '/authors',
+        '/settings',
+        '/books/new',
+        '/books/all',
+        '/books/popular',
+        '/book/:bookId',
+        '/author/:authorId',
+      ],
+      initialRoute: '/signin',
+    );
+
+    _routeState = RouteState(_routeParser);
+
+    _routerDelegate = SimpleRouterDelegate(
+      routeState: _routeState,
+    );
+
+
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) => RouteStateScope(
+        notifier: _routeState,
+        child: MaterialApp.router(
+            routerDelegate: _routerDelegate,
+            routeInformationParser: _routeParser,
+            // Revert back to pre-Flutter-2.5 transition behavior:
+            // https://github.com/flutter/flutter/issues/82053
+            theme: ThemeData(
+              useMaterial3: true,
+              pageTransitionsTheme: const PageTransitionsTheme(
+                builders: {
+                  TargetPlatform.android: FadeUpwardsPageTransitionsBuilder(),
+                  TargetPlatform.iOS: CupertinoPageTransitionsBuilder(),
+                  TargetPlatform.linux: FadeUpwardsPageTransitionsBuilder(),
+                  TargetPlatform.macOS: CupertinoPageTransitionsBuilder(),
+                  TargetPlatform.windows: FadeUpwardsPageTransitionsBuilder(),
+                },
+              ),
+            ),
+
+        ),
+      );
+
+
+  @override
+  void dispose() {
+    _routeState.dispose();
+    _routerDelegate.dispose();
+    super.dispose();
+  }
+}