#import <DOM/EventHandler.idl> #import <DOM/EventTarget.idl> #import <HTML/VideoTrack.idl> // https://html.spec.whatwg.org/multipage/media.html#videotracklist [Exposed=Window] interface VideoTrackList : EventTarget { readonly attribute unsigned long length; getter VideoTrack (unsigned long index); VideoTrack? getTrackById(DOMString id); readonly attribute long selectedIndex; attribute EventHandler onchange; attribute EventHandler onaddtrack; attribute EventHandler onremovetrack; };