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[css-pseudo-4] Define ::picker() #10865

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Sep 17, 2024
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[css-pseudo-4] Define ::picker() #10865

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7c3fe1e
Define ::picker()
josepharhar Sep 10, 2024
d279917
address comments
josepharhar Sep 11, 2024
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37 changes: 37 additions & 0 deletions css-pseudo-4/Overview.bs
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Expand Up @@ -1337,6 +1337,43 @@ details[open]::details-content {
}</pre>
</div>

<h3 id="picker-pseudo">
Styling form control pickers: the ''::picker()'' pseudo-element</h3>

The <dfn>::picker()</dfn> pseudo-element targets the popup picker of form
control elements which have popup pickers, such as the <{select}> element. It
is a [=part-like pseudo-element=].

<pre class=prod>
::picker() == ::picker( <<ident>>+ )
</pre>

The ''::picker()'' pseudo-element only matches when the <a>originating
element</a> supports <a>base appearance</a> and has a popup picker. The
specified <<ident>> must also match the unique picker name of the
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I think this should probably be defining the term "unique picker name" (for other specs to reference), unless you think it should be defined somewhere else.

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Done. Do you think that HTML should define the mapping?

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Yes, I think HTML should define it.

<a>originating element</a>. For example, the unique picker name for the
<{select}> element is "select".

There is no restriction on which properties apply to the ''::picker()''
pseudo-element.
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In order for the ''::picker()'' pseudo-element to be rendered, it and its
<a>originating element</a> must be rendered with <a>base appearance</a> by
applying ''appearance: base'' to both of them.

<pre class="example">
&lt;style>
select, select::picker(select) {
appearance: base;
}
select::picker(select) {
border: 5px solid red;
background-color: blue;
}
&lt;/style>
</pre>

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<h2 id="interactions">
Overlapping Pseudo-element Interactions</h2>

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