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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Pseudo-Elements Test: Supported properties in ::marker animations</title>
<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#marker-pseudo">
<link rel="help" href="https://drafts.csswg.org/css-animations-1/#keyframes">
<link rel="help" href="https://drafts.csswg.org/css-transitions-1/#transitions">
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<meta name="assert" content="This test checks ::marker supports animations and transitions, but only for the properties that apply to ::marker." />
<style id="style"></style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<ul>
<li id="target">target</li>
</ul>
<script>
const interpolationTests = [
// ::marker supports all font properties.
{
property: "font",
from: "oblique normal 100 ultra-condensed 5px / 20px serif",
to: "italic small-caps 900 ultra-expanded 25px / 50px Ahem",
midPoint: ["italic small-caps 500 expanded 15px Ahem", "italic small-caps 500 expanded 15px/normal Ahem"],
},
{
property: "font-family",
from: "serif",
to: "Ahem",
midPoint: "Ahem",
},
{
property: "font-feature-settings",
from: "'c2sc'",
to: "'smcp'",
midPoint: "\"smcp\"",
},
{
property: "font-kerning",
from: "normal",
to: "none",
midPoint: "none",
},
{
property: "font-size",
from: "5px",
to: "25px",
midPoint: "15px",
},
{
property: "font-size-adjust",
from: "1",
to: "3",
midPoint: "2",
},
{
property: "font-stretch",
from: "ultra-condensed",
to: "ultra-expanded",
midPoint: ["expanded", "125%"],
},
{
property: "font-style",
from: "oblique",
to: "italic",
midPoint: "italic",
},
{
property: "font-synthesis",
from: "weight",
to: "none",
midPoint: "none",
},
{
property: "font-variant",
from: "unicase",
to: "small-caps",
midPoint: "small-caps",
},
{
property: "font-variant-caps",
from: "unicase",
to: "small-caps",
midPoint: "small-caps",
},
{
property: "font-variant-east-asian",
from: "proportional-width",
to: "full-width",
midPoint: "full-width",
},
{
property: "font-variant-ligatures",
from: "no-historical-ligatures",
to: "historical-ligatures",
midPoint: "historical-ligatures",
},
{
property: "font-variant-numeric",
from: "ordinal",
to: "slashed-zero",
midPoint: "slashed-zero",
},
{
property: "font-variant-position",
from: "super",
to: "sub",
midPoint: "sub",
},
{
property: "font-weight",
from: "100",
to: "900",
midPoint: "500",
},
// ::marker supports `white-space`
{
property: "white-space",
from: "pre-line",
to: "nowrap",
midPoint: "nowrap",
},
// ::marker supports `color`
{
property: "color",
from: "rgb(0, 100, 200)",
to: "rgb(100, 200, 0)",
midPoint: "rgb(50, 150, 100)",
},
// ::marker supports `text-combine-upright`, `unicode-bidi` and `direction`,
// but they are not animatable.
{
property: "text-combine-upright",
from: "all",
to: "all",
midPoint: null,
},
{
property: "unicode-bidi",
from: "embed",
to: "plaintext",
midPoint: null,
},
{
property: "direction",
from: "rtl",
to: "rtl",
midPoint: null,
},
// ::marker supports `content`
{
property: "content",
from: "'foo'",
to: "'bar'",
midPoint: "\"bar\"",
},
// ::marker does NOT support layout properties
{
property: "display",
from: "flex",
to: "none",
midPoint: ["block", "inline", "inline-block"],
},
{
property: "position",
from: "fixed",
to: "absolute",
midPoint: "static",
},
{
property: "float",
from: "left",
to: "right",
midPoint: "none",
},
// ::marker does NOT support list properties despite being affected by them,
// they apply to the list item instead.
{
property: "list-style",
from: "inside url('foo') square",
to: "inside url('bar') decimal",
midPoint: "outside none disc",
},
{
property: "list-style-image",
from: "url('foo')",
to: "url('bar')",
midPoint: "none",
},
{
property: "list-style-position",
from: "inside",
to: "inside",
midPoint: "outside",
},
{
property: "list-style-type",
from: "square",
to: "decimal",
midPoint: "disc",
},
// ::marker does NOT support `line-height` because, despite being a
// longhand of `font`, it's not a font property.
{
property: "line-height",
from: "20px",
to: "50px",
midPoint: "normal",
},
];
const target = document.getElementById("target");
const styleElement = document.getElementById("style");
const markerStyle = getComputedStyle(target, "::marker");
function check({property, from, to, midPoint}) {
assert_true(property in markerStyle, property + " doesn't seem to be supported in the computed style");
assert_true(CSS.supports(property, from), `'${from}' is a supported value for ${property}.`);
assert_true(CSS.supports(property, to), `'${to}' is a supported value for ${property}.`);
const computed = markerStyle.getPropertyValue(property);
if (Array.isArray(midPoint)) {
assert_in_array(computed, midPoint);
} else {
assert_equals(computed, midPoint);
}
}
function testAnimations(interpolationTests) {
styleElement.textContent = `
::marker {
animation: anim 2s -1s paused linear;
}
@keyframes anim {
from {}
to {}
}
`;
const keyframes = styleElement.sheet.cssRules[1];
const fromStyle = keyframes.cssRules[0].style;
const toStyle = keyframes.cssRules[1].style;
for (let {property, from, to, midPoint} of interpolationTests) {
fromStyle.cssText = "";
toStyle.cssText = "";
if (midPoint == null) {
midPoint = markerStyle.getPropertyValue(property);
}
fromStyle.setProperty(property, from);
toStyle.setProperty(property, to);
test(() => {
check({property, from, to, midPoint});
}, `Animation of ${property} in ::marker`);
}
}
function testTransitions(interpolationTests) {
styleElement.textContent = `
.transition::marker {
transition: all 2s -1s linear;
}
.from::marker {}
.to::marker {}
`;
const fromStyle = styleElement.sheet.cssRules[1].style;
const toStyle = styleElement.sheet.cssRules[2].style;
for (let {property, from, to, midPoint} of interpolationTests) {
fromStyle.cssText = "";
toStyle.cssText = "";
if (midPoint == null) {
midPoint = to;
}
fromStyle.setProperty(property, from);
toStyle.setProperty(property, to);
target.className = "from";
markerStyle.width;
target.classList.add("transition");
markerStyle.width;
target.classList.add("to");
test(() => {
check({property, from, to, midPoint});
}, `Transition of ${property} in ::marker`);
}
}
testAnimations(interpolationTests);
testTransitions(interpolationTests);
</script>
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