API to allow access to an element before it is inserted in the editor

[tmonahan]

When a table is created, we would like to be able to apply attributes/styling to the table element before it is inserted in the editor. Is it possible to expose an API which would give us access to the new element and the dialog data before insertElement() is called in the dialog's onOK function?

While the table element is our current concern, it would be great if a general API was eventually made available that would allow manipulation of any element before it is inserted in the editor.