Static factory designed to expose addtrack
events to event handlers that are not necessarily instances of TextTrackList.
See EventStreamProvider for usage information.
static const EventStreamProvider<TrackEvent> addTrackEvent = const EventStreamProvider<TrackEvent>('addtrack')
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-html/TextTrackList/addTrackEvent-constant.html