/// <summary>
/// Saves user input to disk.
/// </summary>
/// <param name="persistor">Persistor object.</param>
public static void Save(UserInputPersistor persistor)
{
try
{
var serializer = new XmlSer.XmlSerializer(typeof(UserInputPersistor));
using (var writer = new System.IO.StreamWriter(GetFilepath()))
{
serializer.Serialize(writer, persistor);
}
}
catch { } // Silent failure, because persisting is not very important
}
private void Window_Loaded(object sender, RoutedEventArgs args)
{
// Initialising object only here, because the creation of AppLogic it takes long.
// However, it is considered good that the window is visible while initialising.
try
{
Title = string.Format("{0} v.{1}", Globals.ProductName, Globals.Version);
// Using the "wait" cursor during startup
var previousCursor = Cursor;
Cursor = System.Windows.Input.Cursors.Wait;
m_appLogic = new AppLogic(ConnectionEventCallback, MessageReceivedCallback);
// Creating a persistor object - If anything has been saved in the disk, loading it
UserInputPersistor persistor = UserInputPersistor.Load(); // Does not leak exceptions
m_host = persistor.Host;
m_exchange = persistor.Exchange;
TopicTextBox.Text = persistor.TopicPattern;
UsernameTextBox.Text = persistor.Username;
SecureConnectionCheckBox.IsChecked = persistor.IsSecureConnection;
// Set up UI state
ChangeUiState(canConnect: true, canTerminate: false);
SetConnectionStatusText(text: "Not connected", isProblem: false);
// Setting to the initial state, mostly applies to filters
SetToInitialState();
// Restoring the default cursor
Cursor = previousCursor;
args.Handled = true;
}
catch (Exception e)
{
MessageBox.Show(this, "Cannot start application: " + e.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
// Trying to add to log
try
{
HandleBug(e);
}
catch { }
throw new Exception("Failed to start application", e);
}
}
private void ConnectButton_Click(object sender, RoutedEventArgs args)
{
try
{
// Clear any previous connection error
ClearConnectionStatusLabel();
bool isSecure = SecureConnectionCheckBox.IsChecked.HasValue && SecureConnectionCheckBox.IsChecked.Value;
// Saving user input to disk
var persistor = new UserInputPersistor
{
Host = m_host,
Exchange = m_exchange,
TopicPattern = TopicTextBox.Text,
Username = UsernameTextBox.Text,
IsSecureConnection = isSecure
};
UserInputPersistor.Save(persistor);
// Updating UI state
ChangeUiState(canConnect: false, canTerminate: true);
try
{
// Connecting
var connRequest = new ConnectionRequest(host: m_host, exc: m_exchange, secure: isSecure,
user: UsernameTextBox.Text, pwd: PasswordTextBox.Password, topic: TopicTextBox.Text);
m_appLogic.Connect(connRequest);
}
catch (InvalidOperationException e)
{
// Showing the error in UI
SetConnectionStatusText(text: e.Message, isProblem: true);
return;
}
args.Handled = true;
}
catch (Exception e)
{
HandleBug(e);
}
}