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Re: [webcomponents]: Making Shadow DOM Subtrees Traversable

From: Bronislav Klučka <Bronislav.Klucka@bauglir.com>
Date: Mon, 25 Feb 2013 18:40:40 +0100
Message-ID: <512BA218.6050902@bauglir.com>
CC: public-webapps <public-webapps@w3.org>

On 25.2.2013 18:33, Tab Atkins Jr. wrote:
> On Mon, Feb 25, 2013 at 7:53 AM, Bronislav Klučka
> <Bronislav.Klucka@bauglir.com> wrote:
>> I'd like to second that, shadow DOM is explicitly designed not to be
>> accessible from outside, to stay consistent, to be sure that nothing gets
>> broken by altering the internals of Shadow DOM control/widget. I'd like to
>> be able to create controls in the future and give those controls to users to
>> place them anywhere. I do not want to hear "our site is broken, because
>> something else on our page was checking if there's a DIV there and you
>> changed it to SECTION, you suck!", internals of the controls should stay
>> internals of the control. You are effectively crippling half of the
>> advantage of Shadow DOM: the ability do whatever I want to do inside the
>> control as long as I expose the same API between versions.
> If a script is explicitly looking inside the shadows of unknown
> controls and checking their contents (and then failing when the
> unknown control has different contents than whatever it expected),
> something is *messed up* with that script.
>
> You don't just accidentally see the insides of shadows.  All the
> traditional movement and search APIs skip them.  I don't think this is
> a realistic fear (not to say it won't happen somewhere, sometime - the
> web is big, and people tile the possibility space, including all the
> bad ideas).

No, I did not mean bug in browser, I ment making shadow traversable so 
shadow internals can be reached from outside... and someone can be 
counting on it.

>
>> So if this is going to be breached, there should be a way for control
>> authors to decide, whether they want to opt for this traversing or not...
> There is.
>
> ~TJ

-- 

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          Bronislav Klučka


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Received on Monday, 25 February 2013 17:41:05 GMT

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