Hello,
the provided text editor is in fact just a template. The template itself is assembled to be as simple as possible and its entire functionality is inline documented. With the templates we intend to provide our custmers a basement (starting point) to create their own, more sophisticated widgets. Thus, feel free to evaluate and modify the implementation of the text editor according to your needs. You could, for example, add code to the editor, that after entering a new sign or deleting a sign, verifies the resulting string and corrects it to always contain the three dots. Similarly you can add filter functionality to not allow the user to enter signs other than digits.
Best regards
Paul Banach