public SendTransactionViewModel(IEthereumHostProvider ethereumHostProvider, IScreen hostScreen = null, CurrentAccountTransactionsService currentAccountTransactionsService = null)
{
this.HostScreen = hostScreen;
_ethereumHostProvider = ethereumHostProvider ?? Locator.Current.GetService <IEthereumHostProvider>();
_currentAccountTransactionsService = currentAccountTransactionsService ?? Locator.Current.GetService <CurrentAccountTransactionsService>();
_ethereumHostProvider.SelectedAccountCallback.Subscribe(x => Address = x);
this._confirmTransfer = new Interaction <string, bool>();
Gas = (ulong)Signer.Transaction.DEFAULT_GAS_LIMIT;
GasPrice = Web3.Web3.Convert.FromWei(Signer.Transaction.DEFAULT_GAS_PRICE, Nethereum.Util.UnitConversion.EthUnit.Gwei);
this.ValidationRule(x => x.AddressTo, address => Util.Utils.IsValidAddress(address), "Address is not valid");
this.ValidationRule(x => x.AmountInEther, amount => amount >= 0, "Amount cannot be negative");
IObservable <IValidationState> balanceValidated =
this.WhenAnyValue(x => x.AmountInEther, x => x.Gas, x => x.GasPrice)
.Throttle(TimeSpan.FromSeconds(1), RxApp.TaskpoolScheduler)
.SelectMany(x => ValidateEnoughBalance(x.Item1, x.Item2, x.Item3))
.ObserveOn(RxApp.MainThreadScheduler);
this.ValidationRule(vm => vm.AmountInEther, balanceValidated);
var canExecuteTransaction = this.IsValid();
var canExecuteTransactionAndEnabled = Observable.CombineLatest(canExecuteTransaction, _ethereumHostProvider.EnabledCallBack, (valid, enabled) => valid && enabled);
this._executeTrasnactionCommand = ReactiveCommand.CreateFromTask(ExecuteAsync, canExecuteTransactionAndEnabled);
this._goBackCommand = ReactiveCommand.CreateFromTask(GoBackAsync);
}
public TransactionsViewModel(IEthereumHostProvider ethereumHostProvider, CurrentAccountTransactionsService currentAccountTransactionsService)
{
this.currentAccountTransactionsService = currentAccountTransactionsService;
this.currentAccountTransactionsService.Transactions.Connect()
.Transform(transaction => new TransactionViewModel(transaction))
.AutoRefresh()
.Sort(SortExpressionComparer <TransactionViewModel> .Descending(t => t.Status).ThenByDescending(t => t.BlockNumber))
.ObserveOn(RxApp.MainThreadScheduler)
.Bind(out _transactions)
.DisposeMany()
.Subscribe();
}
// Avalonia configuration, don't remove; also used by visual designer.
public static AppBuilder BuildAvaloniaApp()
{
var nethereumHostProvider = new NethereumHostProvider();
var currentAccountTransactionsService = new CurrentAccountTransactionsService(nethereumHostProvider);
var accountsService = new AccountsService(nethereumHostProvider);
Locator.CurrentMutable.RegisterConstant(accountsService);
Locator.CurrentMutable.RegisterConstant(nethereumHostProvider);
Locator.CurrentMutable.RegisterConstant(nethereumHostProvider, typeof(IEthereumHostProvider));
Locator.CurrentMutable.RegisterConstant(new ContractService(), typeof(IContractService));
Locator.CurrentMutable.RegisterConstant(currentAccountTransactionsService);
Locator.CurrentMutable.Register(() => new SendTransactionUserControl(), typeof(IViewFor <SendTransactionViewModel>));
return(AppBuilder.Configure <App>()
.UsePlatformDetect()
.LogToTrace()
.UseReactiveUI());
}
