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Re: [webcomponents] Template element parser changes => Proposal for adding DocumentFragment.innerHTML

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Wed, 9 May 2012 10:41:17 +0200
Message-ID: <CAAWBYDBO5aMys5f4Ff+jwDtzMWPpWjdbPEeVJSd=ROBjn+k4=Q@mail.gmail.com>
To: James Graham <jgraham@opera.com>
Cc: public-webapps@w3.org
On Wed, May 9, 2012 at 10:16 AM, James Graham <jgraham@opera.com> wrote:
> On 05/09/2012 09:52 AM, Henri Sivonen wrote:
>>
>> On Tue, Apr 24, 2012 at 6:39 AM, Rafael Weinstein<rafaelw@google.com>
>>  wrote:
>>>
>>> What doesn't appear to be controversial is the parser changes which
>>> would allow the template element to have arbitrary top-level content
>>> elements.
>>
>>
>> It's not controversial as long as an HTML context is assumed.  I think
>> it is still controversial for SVG and MathML elements that aren't
>> wrapped in an<svg>  or<math>  element.
>>
>>> I'd like to propose that we add DocumentFragment.innerHTML which
>>> parses markup into elements without a context element.
>>
>>
>> Why should the programmer first create a document fragment and then
>> set a property on it? Why not introduce four methods on Document that
>> return a DocumentFragment: document.parseFragmentHTML (parses like
>> <template>.innerHTML), document.parseFragementSVG (parses like
>> <svg>.innerHTML), document.parseFragmentMathML (parses like
>> <math>.innerHTML) and document.parseFragmentXML (parses like innerHTML
>> in the XML mode without namespace context)? This would avoid magic for
>> distinguishing HTML<a>  and SVG<a>.
>
>
> I think introducing four seperate methodsWithLongNames on document is not
> creating an API that authors will actually use. Instead it would likely be
> wrapped in some less-verbose API with a single entry point and
> library-specific magic and regexp to determine which entry point to use. So
> I fear this solution may just be punting the problem to a higher layer,
> where it will be more inconsistently solved.

Yes.  In short, while making it Just Work for HTML is a great step, if
you *still* need to use regex to tell when you're trying to build SVG
so you can change the context, we aren't actually gaining much.

~TJ
Received on Wednesday, 9 May 2012 08:42:07 GMT

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