public MainViewModel(Chat tcpChat)
{
chat = tcpChat;
chat.OnMessageRecieved += HandleRecievedMessage;
chat.OnStrokeRecieved += HandleRecievedStroke;
chat.OnUserConnected += user =>
{
Application.Current.Dispatcher.Invoke(() =>
{
if (OnlineUsers.Contains(user))
{
return;
}
OnlineUsers.Add(user);
});
};
chat.OnUserLogout += user =>
{
Application.Current.Dispatcher.Invoke(() =>
{
if (!OnlineUsers.Contains(user))
{
return;
}
OnlineUsers.Remove(user);
});
};
chat.OnUsersListReceived += users =>
{
Application.Current.Dispatcher.Invoke(() =>
{
foreach (var user in users)
{
if (OnlineUsers.Contains(user))
{
continue;
}
OnlineUsers.Add(user);
}
});
};
Messages = new ObservableCollection <ChatMessage>();
Strokes = new ObservableCollection <Stroke>();
OnlineUsers = new ObservableCollection <string>();
OpenDrawRoomCommand = new RelayCommand(x => { WindowService.ShowWindow(new DrawingRoomViewModel(chat)); });
SendMessageCommand = new RelayCommand(x =>
{
if (!chat.IsConnected)
{
MessageBox.Show("Connection Failed");
return;
}
if (string.IsNullOrWhiteSpace(TextField))
{
return;
}
chat.Send(TextField);
TextField = "";
OnPropertyChanged("TextField");
});
}
