Add a copy button to a code box

Hi all, 

it is easy enough to add a code box to a message, article or blog post. This will format the code and apply syntax highlighting. 

To improve the customer experience, we are looking for a way to add a copy button to any code box we insert into a message, article or blog. 

Clicking this button will add all text inside the code box to the clipboard. 

Does anybody have an idea how to add this func. to the codeboxes in Khoros?