private void AirTransit_Load(object sender, EventArgs e)
{
DialogResult LoginCompleted;
using (FormLogin login = new FormLogin())
{
LoginCompleted = login.ShowDialog();
PhoneNumber = login.PhoneNumber;
}
if (LoginCompleted == DialogResult.Abort)
{
MessageBox.Show("Login aborted. Closing...");
Close();
}
else
{
if (Core.Init(phoneNumber))
{
ContactRepo = Core.ContactRepository;
MessageRepo = Core.MessageRepository;
MessageService = Core.MessageService;
Contacts = new ConcurrentBag <Contact>(ContactRepo.GetContacts().ToList());
newMessageIds = Core.GetBlockingCollection();
// Based on : https://docs.microsoft.com/en-us/dotnet/standard/collections/thread-safe/blockingcollection-overview
Task.Run(() =>
{
while (!newMessageIds.IsCompleted)
{
Message message = null;
// Blocks if number.Count == 0
// IOE means that Take() was called on a completed collection.
// Some other thread can call CompleteAdding after we pass the
// IsCompleted check but before we call Take.
// In this example, we can simply catch the exception since the
// loop will break on the next iteration.
try
{
message = newMessageIds.Take();
}
catch (InvalidOperationException) { }
if (message != null)
{
ProcessNewMessage(message);
}
}
});
if (ListContacts.SelectedItem == null && ListContacts.Items.Count > 0)
{
ListContacts.SelectedIndex = 0;
}
}
else
{
MessageBox.Show("An error as occur during initialization. Closing.");
Close();
}
}
}
private void ProcessNewMessage(Message newMessage)
{
Contact senderContact = newMessage.Sender;
if (senderContact.Id == selectedContact.Id)
{
PrintMessage(newMessage);
}
else if (!Contacts.Contains(senderContact))
{
// Adds the new contact to the contacts list
Contacts.Add(senderContact);
}
}
private void PrintMessage(Message message)
{
if (message == null)
{
return;
}
if (Txtconversation.InvokeRequired)
{
MessageArgReturningVoidDelegate d = PrintMessage;
Invoke(d, message);
}
else
{
bool currentlyUser = message.DestinationPhoneNumber != PhoneNumber;
Txtconversation.SelectionColor = currentlyUser ? UserColor : ContactColor;
if (WasUser != currentlyUser || Txtconversation.TextLength == 0)
{
AppendTextSafely($"{message.Sender.Name} :");
WasUser = currentlyUser;
}
AppendTextSafely(message.Content + Environment.NewLine);
}
}
