/// <summary>
/// Handle the application shutting down.
/// </summary>
/// <param name="sender">
/// The event sender.
/// </param>
/// <param name="e">
/// The event arguments.
/// </param>
private void OnExit(object sender, ExitEventArgs e)
{
// Free up all our view models
foreach (Window window in Windows)
{
IDisposable disposable = window.DataContext as IDisposable;
if (disposable == null)
{
continue;
}
try
{
disposable.Dispose();
}
catch (Exception ex)
{
Logger.ApplicationInstance.Error("Failed to free up view model " + disposable.GetType().Name + " for window " + window.GetType().Name, ex);
}
}
// Free up our ethereum manager
try
{
_ethereumManager?.Dispose();
}
catch (Exception ex)
{
Logger.ApplicationInstance.Error("Failed to free up ethereum manager", ex);
}
_ethereumManager = null;
}
/// <summary>
/// Create a new instance of this class.
/// </summary>
/// <param name="ethereumManager">
/// The ethereum manager that this view model uses to obtain information.
/// </param>
protected BaseViewModel(EthereumManager ethereumManager)
{
ExitCommand = new DelegateCommand(Exit);
LogViewCommand = new DelegateCommand(LogView);
IsUiEnabled = true;
_ethereumManager = ethereumManager;
}
/// <summary>
/// Handle the application terminating.
/// </summary>
/// <param name="e">
/// The event arguments.
/// </param>
protected override void OnExit(ExitEventArgs e)
{
// Free any resources we are using
_ethereumManager?.Dispose();
_ethereumManager = null;
// Call to base
base.OnExit(e);
}
/// <summary>
/// Create a new instance of this class.
/// </summary>
/// <param name="ethereumManager">
/// The ethereum manager that this view model uses to obtain information.
/// </param>
public SplashScreenViewModel(EthereumManager ethereumManager)
: base(ethereumManager)
{
// Setup defaults
StatusText = MessageConnecting;
// Start our thread that waits for ethereum network contact to have been established
_thread = new Thread(ThreadEntry)
{
IsBackground = true, Name = "Startup Ethereum Monitoring"
};
_isAlive = true;
_thread.Start();
}
/// <summary>
/// Create a new instance of htis class.
/// </summary>
public SiftApp()
{
// Create our ethereum manager thread that the UI will need
string url = null;
try
{
string value = ConfigurationManager.AppSettings["Lts.Sift.WinClient.EthereumRpcUrl"];
}
catch (Exception ex)
{
Logger.ApplicationInstance.Error("Error parsing value for ethereum URL, will use default", ex);
}
_ethereumManager = new EthereumManager(string.IsNullOrEmpty(url) ? "http://localhost:8545/" : url);
// Hookup to events
Exit += OnExit;
}
/// <summary>
/// Create a new instance of this class.
/// </summary>
/// <param name="ethereumManager">
/// The ethereum manager that this view model uses to obtain information.
/// </param>
public IcoViewModel(EthereumManager ethereumManager)
: base(ethereumManager)
{
if (Accounts.Count > 0)
{
SelectedAccount = Accounts[0];
}
_ethereumManager.Accounts.CollectionChanged += OnAccountsChanged;
_ethereumManager.PropertyChanged += OnEthereumManagerPropertyChanged;
IsAccountSelectionVisible = Accounts.Count != 1;
SiftInvestCommand = new AwaitableDelegateCommand(Invest);
SiftIncreaseQuantityCommand = new DelegateCommand(() => { SiftAmountToPurchase++; });
SiftDecreaseQuantityCommand = new DelegateCommand(() => { SiftAmountToPurchase--; });
// Create a timer to wait for ICO to open
_icoOpenTimer = new Timer(1000)
{
AutoReset = true,
Enabled = true
};
_icoOpenTimer.Elapsed += OnIcoIsOpenTimer;
}