Read the clipboard inside a jsx

I'm trying to transfer data from some programs to AE and the most simple way to do it would be using the clipboard. Or so I thought. 

I managed to get it pasted into an edittext field and read that, worked great, but it's limited to 30,000 chars, which seems like a lot, but once you deal with matrices as strings it's not.

I found a script for ID that captures the event.originalEvent after the user pastes inside the application. Is there a method similar to that for AE edittext fields?

How can I find out what attributes an event has?

function onMyTextChanged(event) { /*reat the event*/ }

I found event.target.text for example, that helps or I can close the event.target.parent window immediately, but I'd like to know what else I can read from the passed event argument. Any Pointers?