Button nodes?

[mmontone]

Is it possible to have button nodes?
I can create and insert a node with tag button, but I don't know how to bind its action, and make it readonly so that the button label cannot be edited.
I think an equivalent of Emacs' insert-button would be cool.

[kchanqvq]

I wrote an explanation of relevant mechanisms in the other discussion (read-only attribute and JavaScript IPC). It does make sense to wrap these in an insert-button-like API — maybe I'll add one in the next few days once I think I have a design!