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Add UA stylesheet for <select> base appearance #10670

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7a93a56
Add UA stylesheet for <select> base appearance
josepharhar Jul 31, 2024
9991736
Merge branch 'main' into selectcss
josepharhar Dec 26, 2024
c6d7d21
update styles to latest resolution
josepharhar Dec 26, 2024
ba2d0df
add user-select:none
josepharhar Dec 26, 2024
56a216c
place-items -> align-items
josepharhar Jan 7, 2025
97af7cd
remove comment
josepharhar Jan 16, 2025
ac87396
Merge branch 'main' into selectcss
josepharhar Feb 27, 2025
9c53509
remove extra newlines
josepharhar Feb 27, 2025
d61e87d
update styles
josepharhar Feb 27, 2025
39cc516
remove inherited property
josepharhar Feb 28, 2025
4e758e2
add field-sizing
josepharhar Mar 10, 2025
0ea2648
remove extra newline
josepharhar Mar 20, 2025
650ca4e
add !important to interactivity
josepharhar Mar 21, 2025
b10cd35
Merge branch 'main' into selectcss
josepharhar Apr 8, 2025
e81a863
Use calc-size() in min sizes
josepharhar Apr 18, 2025
0363cf8
remove inert
josepharhar May 9, 2025
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Expand Up @@ -3997,6 +3997,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
<li>The concept <dfn data-x-href="https://drafts.csswg.org/css-ui/#widget">widget</dfn></li>
<li>The concept <dfn data-x-href="https://drafts.csswg.org/css-ui/#native-appearance">native appearance</dfn></li>
<li>The concept <dfn data-x-href="https://drafts.csswg.org/css-ui/#primitive-appearance">primitive appearance</dfn></li>
<li>The concept <dfn data-x-href="https://drafts.csswg.org/css-ui/#base-appearance">base appearance</dfn></li>
<li>The concept <dfn data-x-href="https://drafts.csswg.org/css-ui/#element-with-default-preferred-size">element with default preferred size</dfn></li>
<li>The <dfn data-x-href="https://drafts.csswg.org/css-ui/#non-devolvable">non-devolvable widget</dfn> and
<dfn data-x-href="https://drafts.csswg.org/css-ui/#devolvable">devolvable widget</dfn> classification, and the related
Expand Down Expand Up @@ -138950,6 +138951,102 @@ progress { appearance: auto; }</code></pre>

</div>

<p>The following styles are expected to apply to <code>select</code> elements when they are being
rendered as a <span>drop-down box</span> with <span>base appearance</span>:</p>

<pre><code class="css">@namespace "http://www.w3.org/1999/xhtml";

select {
text-transform: initial;
text-align: initial;
text-indent: initial;
background-color: transparent;
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Chrome seems to set this to color-mix(in lab, currentColor 10%, transparent) in Forced colors mode. Should that be copied to this PR or should chrome actually just be keeping this as transparent?

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Chrome also seems to set different values in forced colors mode for a few other properties too.

Such as the selects border both normally and on hover.

The hover background change for the options is also lost in forced colors mode too?

I think it would be good to define how all this is expected to work to ensure we're interopable in that mode too.

border: 1px solid currentColor;
padding-block: 0.25em;
padding-inline: 0.5em;
min-block-size: calc-size(auto, max(size, 24px, 1lh));
min-inline-size: calc-size(auto, max(size, 24px));
display: inline-flex;
gap: 0.5em;
border-radius: 0.5em;
user-select: none;
box-sizing: border-box;
field-sizing: content !important;
}

select > button:first-child {
all: unset;
display: contents;
}

select:enabled:hover,
select option:enabled:hover {
background-color: color-mix(in lab, currentColor 10%, transparent);
}
select:enabled:active,
select option:enabled:active {
background-color: color-mix(in lab, currentColor 20%, transparent);
}
select:disabled,
select option:disabled {
color: color-mix(in lab, currentColor 50%, transparent);
}

::picker(select) {
box-sizing: border-box;
border: 1px solid;
padding: 0;
color: CanvasText;
background-color: Canvas;
margin: 0;
inset: auto;
min-inline-size: anchor-size(self-inline);
max-block-size: stretch;
overflow: auto;
position-area: block-end span-inline-end;
position-try-order: most-block-size;
position-try-fallbacks:
block-start span-inline-end,
block-end span-inline-start,
block-start span-inline-start;
}

select option {
min-inline-size: 24px;
min-block-size: max(24px, 1lh);
padding-inline: 0.5em;
padding-block-end: 0;
display: flex;
align-items: center;
gap: 0.5em;
white-space: nowrap;
}

select option::checkmark {
content: '\2713' / '';
}
select option:not(:checked)::checkmark {
visibility: hidden;
}

select::picker-icon {
content: counter(fake-counter-name, disclosure-open);
display: block;
margin-inline-start: auto;
}

select optgroup {
font-weight: bolder;
}

select optgroup option {
font-weight: normal;
}

select optgroup legend {
padding-inline: 0.5em;
min-block-size: 1lh;
}</code></pre>

<div w-nodev>

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