[Bug 23113] New: Deal with mode for TextTrackCues that are not VTTCues


            Bug ID: 23113
           Summary: Deal with mode for TextTrackCues that are not VTTCues
    Classification: Unclassified
           Product: HTML WG
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: HTML5 spec
          Assignee: silviapfeiffer1@gmail.com
          Reporter: silviapfeiffer1@gmail.com
        QA Contact: public-html-bugzilla@w3.org
                CC: graham.clift@am.sony.com, mike@w3.org,
        Depends on: 21851

Reported bu Graham Clift in bug 21851#c35:

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 Saturday, 31 August 2013 06:41:55 UTC