private void OnSelectionChanged(object sender, RoutedEventArgs e)
{
Document.GetText(TextGetOptions.NoHidden, out string text);
if (ChatTextBox.SearchByUsername(text.Substring(0, Math.Min(Document.Selection.EndPosition, text.Length)), out string username, out int index))
{
var chat = ViewModel.Chat;
if (chat == null)
{
return;
}
if (chat.Type is ChatTypeBasicGroup || chat.Type is ChatTypeSupergroup supergroup && !supergroup.IsChannel)
{
View.Autocomplete = new ChatTextBox.UsernameCollection(ViewModel.ProtoService, ViewModel.Chat.Id, username, false, true);
}
private void Autocomplete_ItemClick(object sender, ItemClickEventArgs e)
{
var chat = ViewModel.Chat;
if (chat == null)
{
return;
}
CaptionInput.Document.GetText(TextGetOptions.None, out string hidden);
CaptionInput.Document.GetText(TextGetOptions.NoHidden, out string text);
if (e.ClickedItem is User user && ChatTextBox.SearchByUsername(text.Substring(0, Math.Min(CaptionInput.Document.Selection.EndPosition, text.Length)), out string username, out int index))
{
var insert = string.Empty;
var adjust = 0;
if (string.IsNullOrEmpty(user.Username))
{
insert = string.IsNullOrEmpty(user.FirstName) ? user.LastName : user.FirstName;
adjust = 1;
}
else
{
insert = user.Username;
}
var range = CaptionInput.Document.GetRange(CaptionInput.Document.Selection.StartPosition - username.Length - adjust, CaptionInput.Document.Selection.StartPosition);
range.SetText(TextSetOptions.None, insert);
if (string.IsNullOrEmpty(user.Username))
{
range.Link = $"\"tg-user://{user.Id}\"";
}
CaptionInput.Document.GetRange(range.EndPosition, range.EndPosition).SetText(TextSetOptions.None, " ");
CaptionInput.Document.Selection.StartPosition = range.EndPosition + 1;
}
