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<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="utf-8">
<link rel=author href="mailto:masonf@chromium.org">
<link rel=help href="https://open-ui.org/components/popup.research.explainer">
<link rel=match href="popover-animated-display-ref.tentative.html">
<div popover>This is a popover</div>
<div class=topmost></div>
<style>
[popover] {
width: 100px;
height: 100px;
margin: 1em;
left: 0;
transition: left 20s steps(2, jump-end) -10s;
}
[popover]:open {
left: 200px;
}
.topmost {
position:fixed;
z-index: 999999;
top:0;
left:0;
width:1000px;
height:1000px;
background:green;
margin:0;
padding:0;
}
</style>
<script>
window.onload = () => {
requestAnimationFrame(() => {
requestAnimationFrame(() => {
// This will show the popover, hide the popover, and start the transition.
const popover = document.querySelector('[popover]');
popover.showPopover();
popover.getAnimations()[0].finish();
if (getComputedStyle(popover).left != "200px")
popover.remove();
popover.hidePopover();
document.getAnimations()[0].ready.then(() => {
requestAnimationFrame(() => {
requestAnimationFrame(() => {
// Take a screenshot now.
document.documentElement.classList.remove('reftest-wait');
});
});
});
});
});
}
</script>
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