Is it possible in the fields JSON to add options that personalize the CSS design and possible extra functionalities?

[falinsin]

Two examples of possible customization that I may need,

1. Is it possible to add an extra button next to the control so that with ngclick we can execute custom functions? The idea of this is to be able to manufacture an interface for creation and editing of these fields for the end users.

At the time of creating a form, a user would click on add a text field and then click on a small button associated with that field.
The user would click on that edit button and could add, remove or edit characteristics of that specific form control or even delete it from the form.

Could you add this type of button with an onclick?