Re: [shadow-dom] ::before/after on shadow hosts

The spec [1] also says:

> ::before
> Represents a styleable child pseudo-element immediately before the
originating element’s actual content.
> ::after
> Represents a styleable child pseudo-element immediately before the
originating element’s actual content.

It sounds to me that ::before and ::after are basically *siblings* of the
shadow host, instead of children. I think that should be the intended
behavior.

[1] http://www.w3.org/TR/css-pseudo-4/#generated-content




On Wed, Jul 1, 2015 at 12:33 PM Erik Isaksen <nevraeka@gmail.com> wrote:

> #2 for sure
>
> On Tue, Jun 30, 2015, 4:52 PM Tab Atkins Jr. <jackalmage@gmail.com> wrote:
>
>> I was recently pointed to this StackOverflow thread
>> <
>> http://stackoverflow.com/questions/31094454/does-the-shadow-dom-replace-before-and-after/
>> >
>> which asks what happens to ::before and ::after on shadow hosts, as
>> it's not clear from the specs.  I had to admit that I hadn't thought
>> of this corner-case, and it wasn't clear what the answer was!
>>
>> In particular, there seem to be two reasonable options:
>>
>> 1. ::before and ::after are *basically* children of the host element,
>> so they get suppressed when the shadow contents are displayed
>>
>> 2. ::before and ::after aren't *really* children of the host element,
>> so they still show up before/after the shadow contents.
>>
>> According to the SO thread (I haven't tested this myself), Firefox and
>> Chrome both settled on #2.  I'm fine to spec this in the Scoping
>> module, I just wanted to be sure this was the answer we wanted.
>>
>> ~TJ
>>
>>