custom row action for renderList? (back office)

[cheshire-cat]

Hallo. Is there any way to add custom action to list rows in backoffice, like

$this->addRowAction('edit');

inside MyAdminModuleController->renderList() ?

So far I found out, that actions "details", "edit", "delete", "view" and "duplicate" are allowed and any new action is checked against

AdminControllerCore->$actions_available

array, but adding custom action name to this array didn't help. There must be instructions for action icon+url somewhere, so I guess my action ("export") got deleted there.

Is this possible at all, or should I do it some other way? Thank you for advises.

Edited October 30, 2012 by cheshire-cat (see edit history)