There was a feature like this, but it seems that it was talked about.

this feature would be very interesting in the TextField, and TextArea PasswordField.

Example: If max = 15, both the user input as the developer would be limited (truncated) to 15 characters.

In the textfield putting a method for filtering methods in this property (replaceText (int start, int end, String text) and ReplaceSelection (String text)).
This method would be something like:

private String checkMaxLen(String newString, int start, int end) {
      if( getLenght() >= getMaxLenght())  return null;

      int newLen = getLenght() + (end - start);
      if(newLen <= getMaxLenght()) return newString;
      String filteredNewString = newString.subString(0, getMaxLenght() - getLenght());
      return filteredNewString;
}


Although version 2.1 is closed, I think it is something very simple, very helpful for everyone.