Bug 18169 - <track> The DOM API should be able to read and set the "auto" value for TextTrackCue.line
Summary: <track> The DOM API should be able to read and set the "auto" value for TextT...
Alias: None
Product: HTML WG
Classification: Unclassified
Component: HTML5 spec (show other bugs)
Version: unspecified
Hardware: Other other
: P3 normal
Target Milestone: ---
Assignee: Silvia Pfeiffer
QA Contact: HTML WG Bugzilla archive list
URL: http://www.whatwg.org/specs/web-apps/...
Depends on:
Reported: 2012-07-18 17:31 UTC by contributor
Modified: 2012-09-28 05:46 UTC (History)
6 users (show)

See Also:


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Description contributor 2012-07-18 17:31:27 UTC
This was was cloned from bug 16915 as part of operation convergence.
Originally filed: 2012-05-03 09:22:00 +0000

 #0   contributor@whatwg.org                          2012-05-03 09:22:39 +0000 
Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html
Multipage: http://www.whatwg.org/C#texttrackcue
Complete: http://www.whatwg.org/c#texttrackcue

The DOM API should be able to read and set the "auto" value for

Posted from: by simonp@opera.com
User agent: Opera/9.80 (Macintosh; Intel Mac OS X 10.7.3; U; en) Presto/2.10.229 Version/11.62
 #1   Simon Pieters                                   2012-05-03 09:25:35 +0000 
I think the current situation is not optimal -- it's not possible to tell if a cue has position 0 or auto, and if you want to change the position to auto, you have to create a new cue and copy over all other properties.

I think the IDL should be something like

enum LinePositionKeyword { "auto" };
           attribute (long or LinePositionKeyword) line;

and then prose handling "auto" as appropriate.
 #2   Simon Pieters                                   2012-05-03 09:30:22 +0000 
Also currently the following line makes the cue change position from the bottom to the top, which seems weird:

cue.line = cue.line;
Comment 1 Silvia Pfeiffer 2012-09-28 05:46:37 UTC
EDITOR'S RESPONSE: This is an Editor's Response to your comment. If
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Status: Accepted
Change Description: applied patch
Rationale: adopted resolution by WHATWG