Required TextFields and TextAreas accept spaces as non-null value


in my application I have got several Textfields and Textareas, all of them are set to required. Unfortunately my users must only insert a space to get passed this validation-step. Of course I could add a Validator in order to check if the stripped String has a length greater 0, but that’s some kind of overhead I would like to avoid. Is there a way to tell text-components that they should not accept Strings that consist only of space-characters? Or should there be some easy way to do this? I am not sure if I want to name this an error but it feels almost like one…