[Webkit-unassigned] [Bug 135159] Toggling video subtitle display does not restore previous track mode

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=135159





--- Comment #5 from Chris Adams <chris at improbable.org>  2014-07-23 12:51:17 PST ---
(In reply to comment #3)
> You can listen for a 'change' event and set the track mode yourself.

Here's a testcase I tossed together:

http://chris.improbable.org/experiments/browser/video/track-change-events.html

This registers a change listener on video, source and track elements, the video element's textTracks property, and the track element's track property, but doesn't receive an event from changes originated in either the UI or by updating the track's mode directly.

(Interestingly, it also shows a behaviour which only happens in WebKit but not IE11 where change the track element's src attribute causes the active cue to display multiple times even though there is still only one track element on the page)

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