301 lines
9.9 KiB
Dart
301 lines
9.9 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:dartssh2/dartssh2.dart';
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import 'package:flutter/material.dart';
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// for ed2219 key generation
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import 'package:cryptography/cryptography.dart';
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import 'package:flutter/services.dart';
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// secret storage
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import 'package:flutter_secure_storage/flutter_secure_storage.dart';
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void main() {
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runApp(const MyApp());
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}
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Future<OpenSSHEd25519KeyPair> generateKeyPair() async {
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final algorithm = Ed25519();
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// Generate a key pair
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final cryptographyKeyPair = await algorithm.newKeyPair();
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final privateKey = await cryptographyKeyPair.extractPrivateKeyBytes();
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final publicKey = (await cryptographyKeyPair.extractPublicKey()).bytes;
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final dartsshKeyPair = OpenSSHEd25519KeyPair(
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Uint8List.fromList(publicKey),
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Uint8List.fromList(privateKey + publicKey),
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"",
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);
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return dartsshKeyPair;
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}
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String encodePublicKey(OpenSSHEd25519KeyPair keyPair, {String comment = ''}) {
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final publicKeyBytes = keyPair.toPublicKey().encode();
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return "ssh-ed25519 ${base64.encode(publicKeyBytes)} $comment";
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}
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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// This widget is the root of your application.
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: 'Flutter Demo',
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theme: ThemeData(
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// This is the theme of your application.
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//
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// TRY THIS: Try running your application with "flutter run". You'll see
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// the application has a purple toolbar. Then, without quitting the app,
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// try changing the seedColor in the colorScheme below to Colors.green
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// and then invoke "hot reload" (save your changes or press the "hot
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// reload" button in a Flutter-supported IDE, or press "r" if you used
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// the command line to start the app).
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//
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// Notice that the counter didn't reset back to zero; the application
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// state is not lost during the reload. To reset the state, use hot
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// restart instead.
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//
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// This works for code too, not just values: Most code changes can be
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// tested with just a hot reload.
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colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
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),
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home: const MyHomePage(title: 'LeineLab e.V. Key App'),
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);
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}
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}
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class MyHomePage extends StatefulWidget {
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const MyHomePage({super.key, required this.title});
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// This widget is the home page of your application. It is stateful, meaning
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// that it has a State object (defined below) that contains fields that affect
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// how it looks.
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// This class is the configuration for the state. It holds the values (in this
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// case the title) provided by the parent (in this case the App widget) and
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// used by the build method of the State. Fields in a Widget subclass are
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// always marked "final".
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final String title;
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@override
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State<MyHomePage> createState() => _MyHomePageState();
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}
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class _MyHomePageState extends State<MyHomePage> {
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int _counter = 0;
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int navIndex = 0;
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OpenSSHEd25519KeyPair? keyPair;
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String _output = '';
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String key = '';
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Future<void> _incrementCounter() async {
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setState(() {
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// This call to setState tells the Flutter framework that something has
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// changed in this State, which causes it to rerun the build method below
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// so that the display can reflect the updated values. If we changed
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// _counter without calling setState(), then the build method would not be
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// called again, and so nothing would appear to happen.
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_counter++;
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});
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if (navIndex == 0) {
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SSHSocket? socket;
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try {
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if (keyPair != null) {
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print(keyPair!.toPem());
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}
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socket = await SSHSocket.connect(
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'192.168.2.123',
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22,
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timeout: const Duration(seconds: 0, milliseconds: 500),
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);
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} on SocketException {
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setState(() {
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_output = "SocketException: Could not connect to the server.";
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});
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return;
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}
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try {
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final client = SSHClient(
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socket,
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username: 'test',
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//onPasswordRequest: () => '123456',
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identities: List.of(keyPair != null ? [keyPair!] : []),
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);
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final uptime = await client.run('uptime');
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setState(() {
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_output = utf8.decode(uptime);
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});
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} catch (e) {
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setState(() {
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_output = "Error: $e";
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});
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return;
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}
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print("foo");
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} else {
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// Generate a key pair
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keyPair = await generateKeyPair();
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setState(() {
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// private to hex string
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// key = privateKey
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// .map((byte) => byte.toRadixString(16).padLeft(2, '0'))
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// .join('');
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if (keyPair != null) {
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key = encodePublicKey(keyPair!, comment: "leinelab-app-key");
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} else {
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key = "No key pair generated.";
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}
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});
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await SystemChannels.platform.invokeMethod<void>(
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'Clipboard.setData',
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<String, dynamic>{'text': key},
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);
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}
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}
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@override
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Widget build(BuildContext context) {
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// This method is rerun every time setState is called, for instance as done
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// by the _incrementCounter method above.
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//
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// The Flutter framework has been optimized to make rerunning build methods
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// fast, so that you can just rebuild anything that needs updating rather
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// than having to individually change instances of widgets.
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final String outputText = _output.isNotEmpty
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? 'Output: $_output'
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: 'Press the button to run a command.';
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final bodyComponentMain = Center(
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// Center is a layout widget. It takes a single child and positions it
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// in the middle of the parent.
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child: Column(
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// Column is also a layout widget. It takes a list of children and
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// arranges them vertically. By default, it sizes itself to fit its
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// children horizontally, and tries to be as tall as its parent.
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//
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// Column has various properties to control how it sizes itself and
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// how it positions its children. Here we use mainAxisAlignment to
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// center the children vertically; the main axis here is the vertical
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// axis because Columns are vertical (the cross axis would be
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// horizontal).
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//
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// TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
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// action in the IDE, or press "p" in the console), to see the
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// wireframe for each widget.
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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Text('Current output:'),
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Text(outputText, style: Theme.of(context).textTheme.headlineMedium),
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],
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),
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);
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final bodyComponentInfo = Center(
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// Center is a layout widget. It takes a single child and positions it
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// in the middle of the parent.
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child: Column(
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// Column is also a layout widget. It takes a list of children and
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// arranges them vertically. By default, it sizes itself to fit its
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// children horizontally, and tries to be as tall as its parent.
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//
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// Column has various properties to control how it sizes itself and
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// how it positions its children. Here we use mainAxisAlignment to
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// center the children vertically; the main axis here is the vertical
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// axis because Columns are vertical (the cross axis would be
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// horizontal).
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//
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// TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
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// action in the IDE, or press "p" in the console), to see the
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// wireframe for each widget.
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[Center(child: Text('Info\n\n$key'))],
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),
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);
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var bodyComponent = bodyComponentMain;
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if (navIndex == 0) {
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// Main page
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bodyComponent = bodyComponentMain;
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} else if (navIndex == 1) {
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// Info page
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bodyComponent = bodyComponentInfo;
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} else {
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throw Exception('Unknown navIndex: $navIndex');
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}
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return Scaffold(
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appBar: AppBar(
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// TRY THIS: Try changing the color here to a specific color (to
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// Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
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// change color while the other colors stay the same.
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backgroundColor: Colors.amber,
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// Here we take the value from the MyHomePage object that was created by
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// the App.build method, and use it to set our appbar title.
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title: Text(widget.title),
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),
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body: bodyComponent,
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floatingActionButton: FloatingActionButton(
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onPressed: _incrementCounter,
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tooltip: 'Increment',
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child: const Icon(Icons.add),
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), // This trailing comma makes auto-formatting nicer for build methods.,
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drawer: Drawer(
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child: ListView(
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padding: EdgeInsets.zero,
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children: <Widget>[
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DrawerHeader(
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decoration: BoxDecoration(color: Colors.amber),
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child: Text(
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widget.title,
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style: TextStyle(color: Colors.black, fontSize: 24),
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),
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),
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ListTile(
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title: const Text('Main Page'),
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onTap: () {
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// Update the state of the app
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// ...
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// Then close the drawer
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setState(() {
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navIndex = 0; // Example of changing the navigation index
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});
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Navigator.pop(context);
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},
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),
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ListTile(
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title: const Text('Info Page'),
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onTap: () {
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// Update the state of the app
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// ...
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// Then close the drawer
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setState(() {
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navIndex = 1; // Example of changing the navigation index
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});
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Navigator.pop(context);
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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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