mirror of
https://github.com/flutter/samples.git
synced 2026-04-29 19:16:54 +00:00
Migrate web dashboard to null safety (#928)
* update dependencies * Update to cloud_firestore 2.x.x * run dart migrate * Fix analyzer warnings from null safety migration * Fix errors resulting from null safety migration * Fix info level warnings * run flutter format * fix tests * remove unused import, format
This commit is contained in:
@@ -10,13 +10,13 @@ import '../app.dart';
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import '../widgets/category_chart.dart';
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class DashboardPage extends StatelessWidget {
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const DashboardPage({Key key}) : super(key: key);
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const DashboardPage({Key? key}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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var appState = Provider.of<AppState>(context);
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return FutureBuilder<List<Category>>(
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future: appState.api.categories.list(),
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future: appState.api!.categories.list(),
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builder: (context, futureSnapshot) {
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if (!futureSnapshot.hasData) {
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return const Center(
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@@ -25,7 +25,7 @@ class DashboardPage extends StatelessWidget {
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}
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return StreamBuilder<List<Category>>(
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initialData: futureSnapshot.data,
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stream: appState.api.categories.subscribe(),
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stream: appState.api!.categories.subscribe(),
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builder: (context, snapshot) {
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if (snapshot.data == null) {
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return const Center(
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@@ -41,9 +41,9 @@ class DashboardPage extends StatelessWidget {
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}
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class Dashboard extends StatelessWidget {
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final List<Category> categories;
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final List<Category>? categories;
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const Dashboard(this.categories, {Key key}) : super(key: key);
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const Dashboard(this.categories, {Key? key}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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@@ -55,7 +55,7 @@ class Dashboard extends StatelessWidget {
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maxCrossAxisExtent: 500,
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),
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children: [
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...categories.map(
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...categories!.map(
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(category) => Card(
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child: CategoryChart(
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category: category,
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@@ -2,6 +2,8 @@
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:intl/intl.dart' as intl;
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import 'package:provider/provider.dart';
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@@ -12,14 +14,14 @@ import '../widgets/categories_dropdown.dart';
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import '../widgets/dialogs.dart';
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class EntriesPage extends StatefulWidget {
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const EntriesPage({Key key}) : super(key: key);
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const EntriesPage({Key? key}) : super(key: key);
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@override
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_EntriesPageState createState() => _EntriesPageState();
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}
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class _EntriesPageState extends State<EntriesPage> {
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Category _selected;
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Category? _selected;
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@override
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Widget build(BuildContext context) {
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@@ -27,14 +29,14 @@ class _EntriesPageState extends State<EntriesPage> {
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return Column(
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children: [
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CategoryDropdown(
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api: appState.api.categories,
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api: appState.api!.categories,
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onSelected: (category) => setState(() => _selected = category)),
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Expanded(
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child: _selected == null
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? const Center(child: CircularProgressIndicator())
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: EntriesList(
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category: _selected,
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api: appState.api.entries,
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api: appState.api!.entries,
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),
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),
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],
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@@ -43,13 +45,13 @@ class _EntriesPageState extends State<EntriesPage> {
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}
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class EntriesList extends StatefulWidget {
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final Category category;
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final Category? category;
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final EntryApi api;
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EntriesList({
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@required this.category,
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@required this.api,
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}) : super(key: ValueKey(category.id));
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this.category,
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required this.api,
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}) : super(key: ValueKey(category?.id));
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@override
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_EntriesListState createState() => _EntriesListState();
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@@ -63,14 +65,14 @@ class _EntriesListState extends State<EntriesList> {
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}
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return FutureBuilder<List<Entry>>(
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future: widget.api.list(widget.category.id),
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future: widget.api.list(widget.category!.id!),
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builder: (context, futureSnapshot) {
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if (!futureSnapshot.hasData) {
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return _buildLoadingIndicator();
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}
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return StreamBuilder<List<Entry>>(
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initialData: futureSnapshot.data,
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stream: widget.api.subscribe(widget.category.id),
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stream: widget.api.subscribe(widget.category!.id!),
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builder: (context, snapshot) {
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if (!snapshot.hasData) {
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return _buildLoadingIndicator();
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@@ -79,10 +81,10 @@ class _EntriesListState extends State<EntriesList> {
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itemBuilder: (context, index) {
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return EntryTile(
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category: widget.category,
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entry: snapshot.data[index],
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entry: snapshot.data![index],
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);
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},
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itemCount: snapshot.data.length,
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itemCount: snapshot.data!.length,
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);
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},
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);
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@@ -96,20 +98,20 @@ class _EntriesListState extends State<EntriesList> {
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}
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class EntryTile extends StatelessWidget {
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final Category category;
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final Entry entry;
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final Category? category;
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final Entry? entry;
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const EntryTile({
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this.category,
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this.entry,
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Key key,
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Key? key,
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}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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return ListTile(
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title: Text(entry.value.toString()),
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subtitle: Text(intl.DateFormat('MM/dd/yy h:mm a').format(entry.time)),
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title: Text(entry!.value.toString()),
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subtitle: Text(intl.DateFormat('MM/dd/yy h:mm a').format(entry!.time)),
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trailing: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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@@ -127,7 +129,7 @@ class EntryTile extends StatelessWidget {
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TextButton(
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child: const Text('Delete'),
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onPressed: () async {
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var shouldDelete = await showDialog<bool>(
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var shouldDelete = await (showDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('Delete entry?'),
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@@ -142,12 +144,12 @@ class EntryTile extends StatelessWidget {
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),
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],
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),
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);
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) as FutureOr<bool>);
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if (shouldDelete) {
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await Provider.of<AppState>(context, listen: false)
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.api
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.api!
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.entries
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.delete(category.id, entry.id);
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.delete(category!.id!, entry!.id!);
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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@@ -2,6 +2,8 @@
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:async';
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import 'package:flutter/material.dart';
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import '../widgets/dialogs.dart';
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@@ -13,8 +15,8 @@ class HomePage extends StatefulWidget {
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final VoidCallback onSignOut;
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const HomePage({
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@required this.onSignOut,
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Key key,
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required this.onSignOut,
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Key? key,
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}) : super(key: key);
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@override
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@@ -86,7 +88,7 @@ class _HomePageState extends State<HomePage> {
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}
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Future<void> _handleSignOut() async {
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var shouldSignOut = await showDialog<bool>(
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var shouldSignOut = await (showDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('Are you sure you want to sign out?'),
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@@ -105,9 +107,9 @@ class _HomePageState extends State<HomePage> {
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),
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],
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),
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);
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));
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if (!shouldSignOut) {
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if (shouldSignOut == null || !shouldSignOut) {
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return;
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}
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@@ -11,9 +11,9 @@ class SignInPage extends StatelessWidget {
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final ValueChanged<User> onSuccess;
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const SignInPage({
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@required this.auth,
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@required this.onSuccess,
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Key key,
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required this.auth,
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required this.onSuccess,
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Key? key,
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}) : super(key: key);
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@override
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@@ -31,9 +31,9 @@ class SignInButton extends StatefulWidget {
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final ValueChanged<User> onSuccess;
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const SignInButton({
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@required this.auth,
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@required this.onSuccess,
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Key key,
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required this.auth,
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required this.onSuccess,
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Key? key,
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}) : super(key: key);
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@override
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@@ -41,7 +41,7 @@ class SignInButton extends StatefulWidget {
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}
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class _SignInButtonState extends State<SignInButton> {
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Future<bool> _checkSignInFuture;
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Future<bool>? _checkSignInFuture;
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@override
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void initState() {
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