Re: Fwd: [Bug 23367] Move exceptions into IDL

On 10/3/14, 5:13 AM, Harald Alvestrand wrote:
> Based on this stuff finally happening, I propose that we change our 
> definition:
>
> [NoInterfaceObject]
> interfaceMediaStreamError  {
>      readonly    attributeDOMString   name  <http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStreamError-name>;
>      readonly    attributeDOMString?  message  <http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStreamError-message>;
>      readonly    attributeDOMString?  constraintName  <http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStreamError-constraintName>;
> };
>
> to read
>
> [NoInterfaceObject]
> interfaceMediaStreamError  : Error {
>      readonly    attributeDOMString?  constraintName  <http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStreamError-constraintName>;
> };

Looks great!

One question, we define three of our errors (NotSupportedError, 
NotFoundError and AbortError) as "same as DOM4" [1], but they're just 
namesakes. i.e. they're of type MediaStreamError, not DOMException they 
way the prose is written. Just doublechecking that that's what we want, 
or was the intent to return errors more identical to DOM (i.e. create 
errors of type DOMException for those)? - FWIW I think I prefer 
MediaStreamError, just unsure curious what the redirect is supposed to 
buy us?

[1] 
http://w3c.github.io/mediacapture-main/archives/20140909/getusermedia.html#error-names

.: Jan-Ivar :.