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Re: Adopting postMessage and MessageChannel from HTML5?

From: Sigbjorn Finne <sigbjorn.finne@gmail.com>
Date: Sat, 09 Jan 2010 23:45:10 +0100
Message-ID: <4B4906F6.2020604@gmail.com>
To: Ian Hickson <ian@hixie.ch>
CC: public-webapps <public-webapps@w3.org>
On 1/9/2010 23:05, Ian Hickson wrote:
> On Sat, 9 Jan 2010, Sigbjorn Finne wrote:
>   
>> On 1/9/2010 09:00, Ian Hickson wrote:
>>     
>>> Would this working group be interested in adopting the 
>>> Window.postMessage and MessageChannel/MessagePort features from HTML5? 
>>> It was recently split from the main HTML5 spec into a subspec, but 
>>> some people have suggested it might be best in the webapps group. I'd 
>>> be happy to continue editing it, it would just mean a change in the 
>>> headers, as with Web Storage, etc (and would similarly remain in the 
>>> WHATWG "complete" spec).
>>>       
>> How do you plan to handle the dependency on the "structured cloning" 
>> algorithm? Leave it as a back pointer to HTML5 or also extricate (& tidy 
>> up)?
>>     
>
> There are complex dependencies amongst a number of specs here -- Web 
> Workers, Web Storage, HTML5, and this hypothetical draft all relate to 
> each other. I don't think it's possible to sanely define the features in a 
> way that is completely self-contained (well, short of putting them all in 
> one spec, but that isn't popular at the W3C!). Assuming people are ok with 
> it, therefore, I propose to leave the structured cloning algorithm in 
> HTML5, along with the Window object.
>
>   
That works. You can remove some trivial dependencies by introducing an
abstract interface
that captures the cloneability of native/host objects. One benefit being
that there is no longer
the need to update&sync HTML5 Chapter 2 for every object added by
individual specs.

To wit, 2.8.5 is still using FileData and not Blob. I bet updating this
is in your backlog though :)

--sigbjorn; sof@opera.com
Received on Saturday, 9 January 2010 22:45:50 GMT

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