nsIEventTarget

 This interface is used to dispatch events to a particular thread.  In many
 cases the event target also supports nsIEventQueue.
[scriptable, uuid(ea99ad5b-cc67-4efb-97c9-2ef620a59f2a)]
interface nsIEventTarget : nsISupports

Methods

 This method returns true if the event target is the current thread.
boolean isOnCurrentThread() 
 Method for posting an asynchronous event to the event target.  If this
 method succeeds, then the event will be dispatched on the target thread.

 @param aEvent
        The event to dispatched.
[noscript] void postEvent(in PLEventPtr aEvent)