VB10

class ShopView extends StatefulWidget {
  @override
  _ShopViewState createState() => _ShopViewState();
}

class _ShopViewState extends BaseState<ShopView> {
  List<Product> subList = [];
  int currentPage = 0;

  @override

VB10

import 'package:flutter/material.dart';
import 'package:shoppingapp/core/constants/app_constants.dart';
import 'package:shoppingapp/core/constants/app_strings.dart';

abstract class BaseState<T extends StatefulWidget> extends State<T> {
  ThemeData get currentTheme => Theme.of(context);

  AppStrings get appStrings => AppStrings.instance;
  AppConstants get appConstants => AppConstants.instance;

VB10

class ShopListView extends StatefulWidget {
  final bool isUserOnPage;

  const ShopListView({Key key, this.isUserOnPage}) : super(key: key);
  @override
  _ShopListViewState createState() => _ShopListViewState();
}

class _ShopListViewState extends BaseState<ShopListView> {
  ShopViewModel shopViewModel;

VB10

class ShopDetailView extends BaseStatelessWidget {
  final Product data;
  final int index;

  ShopDetailView({Key key, this.data, this.index});
  @override
  Widget build(BuildContext context) {
    final textTheme = Theme.of(context).textTheme;
    final colorScheme = Theme.of(context).colorScheme;
    return Scaffold(

VB10

import 'dart:html' as html;

import 'package:flutter/material.dart';
import 'dart:ui' as ui;

import './pdf_web_view_view_model.dart';

class PdfWebViewView extends PdfWebViewViewModel {
  String samplePdf = "http://www.africau.edu/images/default/sample.pdf";

VB10

import 'dart:html' as html;

import 'package:flutter/material.dart';
import 'dart:ui' as ui;

import './pdf_web_view_view_model.dart';

class PdfWebViewView extends PdfWebViewViewModel {
  String samplePdf = "http://www.africau.edu/images/default/sample.pdf";

VB10

class ShopPaymentView extends StatefulWidget {
  @override
  _ShopPaymentViewState createState() => _ShopPaymentViewState();
}

class _ShopPaymentViewState extends BaseState<ShopPaymentView> {
  int totalMoney = 0;
  List<Product> get currentProductList =>
      Provider.of<ProductListNotifier>(context, listen: false).productList;

VB10

import 'dart:io';

import 'package:dio/dio.dart';

class BaseConfig {
  Dio dio; // with default Options
  String baseUrl;

  BaseConfig() {
    if (Platform.isIOS) {

VB10

class ShopViewModel extends BaseViewModel with ChangeNotifier {
  // IO.Socket socket = IO.io(AppConstants.SOCKET_URL);

  IO.Socket socket = IO.io(AppConstants.SOCKET_URL, <String, dynamic>{
    'transports': ['websocket'],
    // 'extraHeaders': {'foo': 'bar'} // optional
  });

  ProductService service = ProductService();
  List<Product> subList = [];

VB10

import 'package:flutter/material.dart';

class NumberCircleAvatar extends StatelessWidget {
  final int index;

  const NumberCircleAvatar({Key key, this.index = 0}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return CircleAvatar(
      child: Text(