Calling existing behaviour

I'm adding a custom selectAction function (which should really be documented as dblclick rather than select - it's confusing). I want to do the standard CKFinder ViewFile action in the function. Is there a way of doing this?

Obviously, I can just do window.open in javascript for this case, but it seems sensible to go back to the ckfinder api in case there are side effects I want to keep.