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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS contain-intrinsic-size: single-select list box</title>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#intrinsic-size-override">
<link rel="help" href="https://html.spec.whatwg.org/multipage/rendering.html#list-box">
<style>
.ciw-0 {
contain-intrinsic-width: 0px;
}
.ciw-100 {
contain-intrinsic-width: 100px;
}
.cih-0 {
contain-intrinsic-height: 0px;
}
.cih-100 {
contain-intrinsic-height: 100px;
}
select {
padding: 0;
border: solid;
margin: 5px;
}
.test {
contain: size;
}
</style>
<!-- To measure the size of an empty <select> without size containment -->
<select id="reference"></select>
<select class="test ciw-none cih-none"
data-expected-client-width="default" data-expected-client-height="default"></select>
<select class="test ciw-none cih-0"
data-expected-client-width="default" data-expected-client-height="0"></select>
<select class="test ciw-none cih-100"
data-expected-client-width="default" data-expected-client-height="100"></select>
<select class="test ciw-0 cih-none"
data-expected-client-width="0" data-expected-client-height="default"></select>
<select class="test ciw-0 cih-0"
data-expected-client-width="0" data-expected-client-height="0"></select>
<select class="test ciw-0 cih-100"
data-expected-client-width="0" data-expected-client-height="100"></select>
<select class="test ciw-100 cih-none"
data-expected-client-width="100" data-expected-client-height="default"></select>
<select class="test ciw-100 cih-0"
data-expected-client-width="100" data-expected-client-height="0"></select>
<select class="test ciw-100 cih-100"
data-expected-client-width="100" data-expected-client-height="100"></select>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<script>
const reference = document.getElementById("reference");
const normalWidth = reference.clientWidth;
const normalHeight = reference.clientHeight;
for (let test of document.querySelectorAll(".ciw-none")) {
test.dataset.expectedClientWidth = normalWidth;
}
for (let test of document.querySelectorAll(".cih-none")) {
test.dataset.expectedClientHeight = normalHeight;
}
checkLayout('.test');
</script>
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