Script Runner create issue from WebUI Fragment

[Jordan Berry]

Here is what I am trying to do:

Have a button live on an issue page, where the user can click it.

When clicked, I want that button to create another issue, inheriting some of the current issues field values.

In an ideal world, I would also like to be able to prompt a screen to get some user information, but that isn't a direct requirement right now

Is this something I can achieve with ScriptRunner? If so, how do I start getting the UI element to start calling a script?

It is working going through post functions, but I am trying to break this away from workflows, as they are getting messy.