public virtual void AppendMessage(string message, string label, bool showTime)
{
ControlUtils.AsyncSafeInvoke(this, () =>
{
string text = (MessageList.Lines?.Length ?? 0) > 0 ? "\r\n" : string.Empty;
if (showTime)
{
text += string.Format("[{0:T}]", DateTime.Now);
}
if (string.IsNullOrWhiteSpace(label) == false)
{
text += string.Format("[{0}]", label ?? string.Empty);
}
if (string.IsNullOrWhiteSpace(text) == false)
{
text += " " + message ?? string.Empty;
}
else
{
text = message ?? string.Empty;
}
MessageList.AppendText(text);
ControlUtils.ScrollToBottom(MessageList);
this.Invalidate();
});
}
private async void Connect()
{
connection.On <string, string, string>("ReceiveMessage", (emailAddress, displayname, message) =>
{
this.Dispatcher.Invoke(() => ReceiveMessage(emailAddress, message));
});
connection.On <FileMessage>("FileMessage", (file) =>
{
this.Dispatcher.Invoke(() => ReceiveFileMessage(file));
});
try
{
await connection.StartAsync();
MessageList.ScrollToEnd();
}
catch (Exception exception)
{
MessageList.AppendText(exception.Message);
}
await connection.InvokeAsync("JoinGroup", _groupId);
}
private async void SendFileBtnEvent(object sender, RoutedEventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
if (openFileDialog.ShowDialog() == true)
{
string fullPath = openFileDialog.FileName;
string fileName = System.IO.Path.GetFileName(fullPath);
FileMessage file = new FileMessage()
{
FileBinary = File.ReadAllBytes(fullPath),
FileHeaders = fileName
};
try
{
await connection.InvokeAsync("FileMessage", _emailAddress, _groupId, file);
await connection.InvokeAsync("SendMessage", _emailAddress, _groupId, "Sent file \"" + fileName + "\"");
}
catch (Exception exception)
{
MessageList.AppendText(exception.Message);
}
}
}
private void ReceiveFileMessage(FileMessage file)
{
MessageList.AppendText("File received\n");
Directory.CreateDirectory(storageDir);
File.WriteAllBytes(System.IO.Path.Combine(storageDir, file.FileHeaders), file.FileBinary);
MessageList.AppendText((file.FileHeaders));
}
private async Task SendMessage()
{
try
{
//Calls method in hub - with the three arguments: email, groupid and message
await connection.InvokeAsync("SendMessage", _emailAddress, _groupId, MessageTextBox.Text);
MessageTextBox.Clear();
MessageTextBox.Focus();
}
catch (Exception exception)
{
MessageList.AppendText(exception.Message);
}
}