public ContactViewModel(User user, ContactViewModel parent)
{
User = user;
IsOnline = user.Online;
Status = user.Online ? "Online" : "Offline";
_parent = parent;
}
private void InitializeConnection(string url, Cookie authCookie)
{
_connection = new HubConnection(url) { CookieContainer = new CookieContainer() };
_connection.CookieContainer.Add(authCookie);
// Get a reference to the chat proxy
_chat = new Chat(_connection);
// Start the connection
_connection.Start().ContinueWith(task =>
{
if (task.IsFaulted)
{
// Show a connection error here
}
else
{
// Get a list of users and add it to the view model
_chat.GetUsers().ContinueWith(getUsersTask =>
{
if (getUsersTask.IsFaulted)
{
// Show a connection error here
}
else
{
var result = getUsersTask.Result;
Me = new ContactViewModel(result.Single(u => u.Name == Name));
Me.OpenChatEvent += OnOpenChat;
// Exclude current user from Contact list
var contacts = from User user in result
where !user.Name.Equals(Me.User.Name, StringComparison.OrdinalIgnoreCase)
select new ContactViewModel(user, Me);
Contacts = new ObservableCollection<ContactViewModel>(contacts);
}
});
}
});
// Fire events on the ui thread
_chat.UserOffline += user => _syncContext.Post(_ => OnUserStatusChange(user), null);
_chat.UserOnline += user => _syncContext.Post(_ => OnUserStatusChange(user), null);
_chat.Message += message => _syncContext.Post(_ => OnMessage(message), null);
}
