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Added login screen and Tree page screen to test graph view package

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This commit is contained in:
Abdullah-Alassaf
2024-05-16 01:01:14 +03:00
parent a8dd969e07
commit 71bba79887
137 changed files with 5399 additions and 0 deletions
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126
lib/main.dart Normal file
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import 'package:flutter/material.dart';
import 'package:syncrow_web/pages/auth/view/login_page.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// TRY THIS: Try running your application with "flutter run". You'll see
// the application has a purple toolbar. Then, without quitting the app,
// try changing the seedColor in the colorScheme below to Colors.green
// and then invoke "hot reload" (save your changes or press the "hot
// reload" button in a Flutter-supported IDE, or press "r" if you used
// the command line to start the app).
//
// Notice that the counter didn't reset back to zero; the application
// state is not lost during the reload. To reset the state, use hot
// restart instead.
//
// This works for code too, not just values: Most code changes can be
// tested with just a hot reload.
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
),
home: LoginPage(),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
// This call to setState tells the Flutter framework that something has
// changed in this State, which causes it to rerun the build method below
// so that the display can reflect the updated values. If we changed
// _counter without calling setState(), then the build method would not be
// called again, and so nothing would appear to happen.
_counter++;
});
}
@override
Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done
// by the _incrementCounter method above.
//
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
return Scaffold(
appBar: AppBar(
// TRY THIS: Try changing the color here to a specific color (to
// Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
// change color while the other colors stay the same.
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
// Here we take the value from the MyHomePage object that was created by
// the App.build method, and use it to set our appbar title.
title: Text(widget.title),
),
body: Center(
// Center is a layout widget. It takes a single child and positions it
// in the middle of the parent.
child: Column(
// Column is also a layout widget. It takes a list of children and
// arranges them vertically. By default, it sizes itself to fit its
// children horizontally, and tries to be as tall as its parent.
//
// Column has various properties to control how it sizes itself and
// how it positions its children. Here we use mainAxisAlignment to
// center the children vertically; the main axis here is the vertical
// axis because Columns are vertical (the cross axis would be
// horizontal).
//
// TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
// action in the IDE, or press "p" in the console), to see the
// wireframe for each widget.
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
const Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headlineMedium,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: const Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}

19
lib/pages/auth/bloc/login_bloc.dart Normal file
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import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:syncrow_web/pages/auth/bloc/login_event.dart';
import 'package:syncrow_web/pages/auth/bloc/login_state.dart';
class LoginBloc extends Bloc<LoginEvent, LoginState> {
LoginBloc() : super(LoginInitial()) {
on<LoginButtonPressed>(_onPress);
}
void _onPress(LoginButtonPressed event, Emitter<LoginState> emit) async {
emit(LoginLoading());
await Future.delayed(const Duration(seconds: 2));
if (event.username == 'admin' && event.password == 'password') {
emit(LoginSuccess());
} else {
emit(const LoginFailure(error: 'Invalid credentials'));
}
}
}

18
lib/pages/auth/bloc/login_event.dart Normal file
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import 'package:equatable/equatable.dart';
abstract class LoginEvent extends Equatable {
const LoginEvent();
@override
List<Object> get props => [];
}
class LoginButtonPressed extends LoginEvent {
final String username;
final String password;
const LoginButtonPressed({required this.username, required this.password});
@override
List<Object> get props => [username, password];
}

23
lib/pages/auth/bloc/login_state.dart Normal file
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import 'package:equatable/equatable.dart';
abstract class LoginState extends Equatable {
const LoginState();
@override
List<Object> get props => [];
}
class LoginInitial extends LoginState {}
class LoginLoading extends LoginState {}
class LoginSuccess extends LoginState {}
class LoginFailure extends LoginState {
final String error;
const LoginFailure({required this.error});
@override
List<Object> get props => [error];
}

100
lib/pages/auth/view/login_page.dart Normal file
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import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:syncrow_web/pages/auth/bloc/login_bloc.dart';
import 'package:syncrow_web/pages/auth/bloc/login_event.dart';
import 'package:syncrow_web/pages/auth/bloc/login_state.dart';
import 'package:syncrow_web/pages/home/view/home_page.dart';
class LoginPage extends StatelessWidget {
const LoginPage({super.key});
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Login'),
),
body: BlocProvider(
create: (context) => LoginBloc(),
child: BlocConsumer<LoginBloc, LoginState>(
listener: (context, state) {
if (state is LoginSuccess) {
// Navigate to home screen after successful login
Navigator.pushReplacement(
context,
MaterialPageRoute(builder: (context) => const HomePage()),
);
} else if (state is LoginFailure) {
// Show error message
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(state.error),
),
);
}
},
builder: (context, state) {
if (state is LoginLoading) {
return const Center(child: CircularProgressIndicator());
} else {
return _buildLoginForm(context);
}
},
),
),
);
}
Widget _buildLoginForm(BuildContext context) {
final loginBloc = BlocProvider.of<LoginBloc>(context);
final TextEditingController _usernameController = TextEditingController();
final TextEditingController _passwordController = TextEditingController();
return Center(
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
SizedBox(
width: MediaQuery.sizeOf(context).width * 0.4,
child: TextField(
controller: _usernameController,
decoration: const InputDecoration(
labelText: 'Username',
),
),
),
const SizedBox(height: 20.0),
SizedBox(
width: MediaQuery.sizeOf(context).width * 0.4,
child: TextField(
controller: _passwordController,
obscureText: true,
decoration: const InputDecoration(
labelText: 'Password',
),
),
),
const SizedBox(height: 20.0),
ElevatedButton(
onPressed: () async {
// Trigger login event
loginBloc.add(
LoginButtonPressed(
username: _usernameController.text,
password: _passwordController.text,
),
);
},
child: const Text('Login'),
),
],
),
),
);
}
}

33
lib/pages/home/bloc/home_bloc.dart Normal file
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import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:graphview/GraphView.dart';
import 'package:syncrow_web/pages/home/bloc/home_event.dart';
import 'package:syncrow_web/pages/home/bloc/home_state.dart';
class HomeBloc extends Bloc<HomeEvent, HomeState> {
final Graph graph = Graph()..isTree = true;
final BuchheimWalkerConfiguration builder = BuchheimWalkerConfiguration();
List<Node> sourcesList = [];
List<Node> destinationsList = [];
HomeBloc() : super((HomeInitial())) {
on<CreateNewNode>(_createNode);
}
void _createNode(CreateNewNode event, Emitter<HomeState> emit) async {
emit(HomeInitial());
sourcesList.add(event.sourceNode);
destinationsList.add(event.destinationNode);
for (int i = 0; i < sourcesList.length; i++) {
graph.addEdge(sourcesList[i], destinationsList[i]);
}
builder
..siblingSeparation = (100)
..levelSeparation = (150)
..subtreeSeparation = (150)
..orientation = (BuchheimWalkerConfiguration.ORIENTATION_TOP_BOTTOM);
emit(HomeUpdateTree(graph: graph, builder: builder));
}
}

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lib/pages/home/bloc/home_event.dart Normal file
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import 'package:equatable/equatable.dart';
import 'package:graphview/GraphView.dart';
abstract class HomeEvent extends Equatable {
const HomeEvent();
@override
List<Object> get props => [];
}
class CreateNewNode extends HomeEvent {
final Node sourceNode;
final Node destinationNode;
const CreateNewNode(
{required this.sourceNode, required this.destinationNode});
@override
List<Object> get props => [sourceNode, destinationNode];
}

26
lib/pages/home/bloc/home_state.dart Normal file
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import 'package:equatable/equatable.dart';
import 'package:graphview/GraphView.dart';
abstract class HomeState extends Equatable {
const HomeState();
@override
List<Object> get props => [];
}
class HomeInitial extends HomeState {}
class HomeCounterState extends HomeState {
final int counter;
const HomeCounterState(this.counter);
}
class HomeUpdateTree extends HomeState {
final Graph graph;
final BuchheimWalkerConfiguration builder;
const HomeUpdateTree({required this.graph, required this.builder});
@override
List<Object> get props => [graph, builder];
}

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lib/pages/home/view/home_page.dart Normal file
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import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:syncrow_web/pages/home/bloc/home_bloc.dart';
import 'package:syncrow_web/pages/home/view/tree_page.dart';
class HomePage extends StatelessWidget {
const HomePage({super.key});
@override
Widget build(BuildContext context) {
return Scaffold(
body: BlocProvider(
create: (context) => HomeBloc(),
child: const TreeWidget(),
));
}
}

150
lib/pages/home/view/tree_page.dart Normal file
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import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:graphview/GraphView.dart';
import 'package:syncrow_web/pages/home/bloc/home_bloc.dart';
import 'package:syncrow_web/pages/home/bloc/home_event.dart';
import 'package:syncrow_web/pages/home/bloc/home_state.dart';
class TreeWidget extends StatelessWidget {
const TreeWidget({super.key});
@override
Widget build(BuildContext context) {
// final HomeBloc homeBloc = BlocProvider.of<HomeBloc>(context);
String firstNodeName = '';
String secondNodeName = '';
return SafeArea(
child: Container(
padding: const EdgeInsets.all(24),
width: MediaQuery.sizeOf(context).width,
height: MediaQuery.sizeOf(context).height,
alignment: AlignmentDirectional.center,
child: Column(
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
BlocBuilder<HomeBloc, HomeState>(builder: (context, state) {
if (state is HomeInitial) {
return Wrap(
children: [
Container(
width: 100,
child: TextFormField(
decoration:
InputDecoration(labelText: "Subtree separation"),
onChanged: (text) {
firstNodeName = text;
},
),
),
const SizedBox(
width: 8,
),
Container(
width: 100,
child: TextFormField(
decoration: InputDecoration(labelText: "Node Name"),
onChanged: (text) {
secondNodeName = text;
},
),
),
ElevatedButton(
onPressed: () {
final node1 = Node.Id(firstNodeName);
final node2 = Node.Id(secondNodeName);
context.read<HomeBloc>().add(CreateNewNode(
sourceNode: node1, destinationNode: node2));
},
child: Text("Add"),
)
],
);
}
if (state is HomeUpdateTree) {
return Expanded(
child: InteractiveViewer(
constrained: false,
boundaryMargin: const EdgeInsets.all(100),
minScale: 0.01,
maxScale: 5.6,
child: GraphView(
graph: state.graph,
algorithm: BuchheimWalkerAlgorithm(
state.builder, TreeEdgeRenderer(state.builder)),
paint: Paint()
..color = Colors.green
..strokeWidth = 1
..style = PaintingStyle.stroke,
builder: (Node node) {
// I can decide what widget should be shown here based on the id
var nodeName = node.key!.value;
return rectangleWidget(nodeName, node, context);
},
)),
);
} else {
return Container();
}
})
],
),
),
);
}
}
Widget rectangleWidget(String text, Node node, BuildContext blocContext) {
String nodeName = '';
return InkWell(
onTap: () {
showDialog(
context: blocContext,
builder: (BuildContext context) {
return AlertDialog(
title: const Text('Add a child'),
content: TextField(
decoration:
const InputDecoration(hintText: 'Enter your text here'),
onChanged: (value) {
nodeName = value;
},
),
actions: <Widget>[
TextButton(
onPressed: () {
Navigator.of(context).pop();
},
child: Text('Close'),
),
TextButton(
onPressed: () {
if (nodeName.isNotEmpty) {
final newNode = Node.Id(nodeName);
blocContext.read<HomeBloc>().add(CreateNewNode(
sourceNode: node, destinationNode: newNode));
}
Navigator.of(context).pop();
},
child: Text('Add'),
),
],
);
},
);
},
child: Container(
padding: EdgeInsets.all(16),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(4),
boxShadow: [
BoxShadow(color: Colors.blue[100]!, spreadRadius: 1),
],
),
child: Text(text)),
);
}

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lib/services/auth_api.dart Normal file
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class AuthAPI {}