This content covers features introduced in Thunderbird 3
The extIEvents interface supports custom events. extIEvents is defined in
Adds an event listener to the list. If multiple identical event listeners are registered on the same event target with the same parameters the duplicate instances are discarded. They do not cause the EventListener to be called twice and since they are discarded they do not need to be removed with the removeListener method.
void addListener(in AString aEvent, in extIEventListener aListener)
- The name of the event. A list of events is available here.
- The event listener to be added
Removes an event listener from the list. Calling remove with arguments which do not identify any currently registered event listener has no effect.
void removeListener(in AString aEvent, in extIEventListener aListener)
- The name of the event
- The event listener to be removed