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## Pre-launch Checklist - [ ] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [ ] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [ ] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [ ] I signed the [CLA]. - [ ] I listed at least one issue that this PR fixes in the description above. - [ ] I updated/added relevant documentation (doc comments with `///`). - [ ] I added new tests to check the change I am making, or this PR is [test-exempt]. - [ ] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [ ] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
68 lines
1.7 KiB
Dart
68 lines
1.7 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'use_cases.dart';
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class SnackBarUseCase extends UseCase {
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@override
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String get name => 'SnackBar';
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@override
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String get route => '/snack-bar';
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@override
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Widget build(BuildContext context) => const MainWidget();
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}
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class MainWidget extends StatefulWidget {
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const MainWidget({super.key});
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@override
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State<MainWidget> createState() => MainWidgetState();
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}
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class MainWidgetState extends State<MainWidget> {
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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backgroundColor: Theme.of(context).colorScheme.inversePrimary,
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title: const Text('SnackBar'),
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),
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body: Center(
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child: Column(
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children: <Widget>[
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ElevatedButton(
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child: const Text('Show Snackbar'),
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onPressed: () {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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content: Text('Awesome Snackbar!'),
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),
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);
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},
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),
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ElevatedButton(
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child: const Text('Show Snackbar with action '),
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onPressed: () {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: const Text('Awesome Snackbar!'),
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action: SnackBarAction(
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label: 'Action',
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onPressed: () {},
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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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),
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),
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);
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}
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}
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