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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Pseudo-Elements Test: Computed size of ::marker</title>
<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#marker-pseudo">
<link rel="help" href="https://drafts.csswg.org/css-lists/#content-property">
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<meta name="assert" content="This test checks that getComputedStyle exposes the resolved sizes of a ::marker." />
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
:root {
--image: url('/images/green-100x50.png');
}
:root::after {
/* Preload image */
content: var(--image);
}
#target {
font: 10px/1 Ahem;
--content: normal;
}
#target::marker {
content: var(--content);
}
</style>
<div id="log"></div>
<ul>
<li id="target"></li>
</ul>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
const target = document.getElementById("target");
function checkMarkerSize(expectedWidth, expectedHeight) {
const {width, height} = getComputedStyle(target, "::marker");
assert_equals(width, expectedWidth, "width");
assert_equals(height, expectedHeight, "height");
}
setup({explicit_done: true});
addEventListener("load", () => {
test(() => {
// Marker string: "1. "
target.style.listStyleType = "decimal";
checkMarkerSize("30px", "10px");
}, "Decimal ::marker");
test(() => {
// Marker string: "10. "
target.setAttribute("value", "10");
checkMarkerSize("40px", "10px");
}, "Decimal ::marker with custom value");
test(() => {
// Marker string: "st"
target.style.listStyleType = "'st'";
checkMarkerSize("20px", "10px");
}, "String ::marker");
test(() => {
// No marker box
target.style.listStyleType = "none";
checkMarkerSize("auto", "auto");
}, "::marker with no box due to 'list-style'");
test(() => {
// Marker contents: "foo", "bar"
target.style.setProperty("--content", "'foo' 'bar'");
checkMarkerSize("60px", "10px");
}, "::marker with custom string contents");
test(() => {
// Marker contents: 100x50 image (+2px due to baseline alignment)
target.style.setProperty("--content", "var(--image)");
checkMarkerSize("100px", "52px");
}, "::marker with custom image contents");
test(() => {
// Marker contents: "foo", 100x50 image (+2px due to baseline alignment)
target.style.setProperty("--content", "'foo' var(--image)");
checkMarkerSize("130px", "52px");
}, "::marker with custom string and image contents");
test(() => {
// No marker box
target.style.listStyleType = "";
target.style.setProperty("--content", "none");
checkMarkerSize("auto", "auto");
}, "::marker with no box due to 'content'");
done();
}, {once: true});
</script>
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