Optional ReadonlyfilterAn optional callback function allowing for filtering keystrokes based on arbitrary criteria.
The callback function receives keydown DOM event as a parameter.
Optional ReadonlypriorityThe priority of the keystroke callback. The higher the priority value the sooner the callback will be executed. Keystrokes having the same priority are called in the order they were added.
module:utils/keystrokehandler~KeystrokeHandler#set method options.