[Bug 21851] revert removal of text and getCueAsHTML members; address constructor changes

https://www.w3.org/Bugs/Public/show_bug.cgi?id=21851

--- Comment #35 from Graham <graham.clift@am.sony.com> ---
In order to address the issue where a textTrackCue object may or may not be
rendered by the user agent I would like to propose the following:

The definition of the mode attribute on the TextTrack interface is modified
such that any attempts to change the mode to 'showing' fails unless there there
is a cueFormatHint(as per
http://www.w3.org/html/wg/wiki/User:Spfeiffe/TextTrackChange#.283 prop (3) ) 
present that is recognized by the User Agent as a TextTrack with renderable
TextTrackCues based on this hint. 

In this way the application can detect whether to attempt CC display of
texttracks  unrecognized by the user agent by utilizing a JS method.

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Received on Monday, 12 August 2013 19:04:08 UTC