Re: Discussion of File API at TPAC in Lyon

[Jonas Sicking]

On Thu, Nov 11, 2010 at 8:52 AM, Arun Ranganathan
<aranganat...@mozilla.com> wrote:
> At the recent Technical Plenary and All WG Meetings in Lyon, File API[1] was 
> discussed, and there are some take away action items that I minuted for 
> myself for File API, but I'm not sure they are reflected in ACTION items, 
> etc.  From my own notes:
>
> Essentially, strong opinions were voiced against having top-level methods 
> createObjectURL and revokeObjectURL. So the biggest change was to introduce a 
> new top-level object (ObjectURL) which would have methods to obtain a string 
> Blob URI.  This removes the need for a revocation mechanism, since now the 
> ObjectURL object (which would take as a constructor the Blob object) would 
> oversee lifetime issues.  This is a big change, but potentially one that 
> allows us to work with the emerging URL API (which hopefully is going 
> somewhere).

Actually, this was a brain-fart on my part. What was suggested was
that we simply allow:

img.src = myFile;
img.src = myBlob;
img.src = myFutureStream;
img.src = "http://www.sweden.se/ABBA.jpg";;

These things could be implemented without lifetime worries.

What we might need is a IDL construct so that a specification can just say

interface HTMLImageElement {
  ...
  attribute URLThingamajig src;
  ...
};

Which would automatically define that it accepts files/blobs/strings.
And gives us a central place to update when we want to add streams and
other things.

/ Jonas