Re: ::part Additions

On 2.7.2013 18:03, Tab Atkins Jr. wrote:
> On Tue, Jul 2, 2013 at 8:52 AM, Bronislav Klučka
> <Bronislav.Klucka@bauglir.com> wrote:
>> On 2.7.2013 17:28, Tab Atkins Jr. wrote:
>>> On Tue, Jul 2, 2013 at 6:32 AM, Bronislav Klučka
>>> <Bronislav.Klucka@bauglir.com> wrote:
>>>> 2/ change of part attribute from DOMString to DOMTokenList
>>> This sounds all right.  part='' is already class-like, since multiple
>>> elements can have the same part='' value.  The example at your page is
>>> pretty compelling about this ability's usage.  I guess ::part() would
>>> also expand to taking a list of idents.
>> Why would it? We have established convention for AND operator
>> .class1.class2
>> would became
>> ::part(node-checked)::part(node-selected)
>>
>> and for OR operator
>> .class1, .class2
>> would became
>> ::part(node-checked), ::part(node-selected)
>>
>> :matches(.class1, .class2)
>> would became
>> :matches(::part(node-checked), ::part(node-selected))
> Oh, no no no.  ::part() is not a pseudo-class, it's a pseudo-element -
> it points to a brand new element, rather than filtering the one you've
> got.  The fact that part='' is acting like class='' notwithstanding,
> using ::part() like would be an abuse of the syntax.  If we want to
> support this, it has to be through something like "::part(node-checked
> node-selected)".
>
> As an example of why violating the syntax model is a bad idea, this
> directly conflicts with your desire to surface the ::part()s of nested
> components - the thing that exposes them might be exposed as a
> ::part() as well, so you need to be able to chain off of an existing
> ::part(), like "x-video::part(controls)::part(play-button)" (assuming
> the controls were actually implemented by another component nested
> inside the <x-video> shadow tree).
>
> ~TJ
>
And back to

x-video::part(controls)::part(play-button)

example

how it would be different from

x-video ::part(controls) ::part(play-button)

or this wouldn't be possible? the only possibilities being
::part(play-button)
or
::part(controls)::part(play-button)
or
x-video::part(controls)::part(play-button)
   

Brona

Received on Tuesday, 2 July 2013 16:21:28 UTC