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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-contain/content-visibility/element-reassigned-to-slot-in-skipped-subtree.html - WPT Dashboard Interop Dashboard
<!doctype HTML>
<html class="reftest-wait">
<meta charset="utf8">
<title>CSS Content Visibility: element reslotting</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel="match" href="container-ref.html">
<meta name="assert" content="element is correctly removed when slot assignment takes it into a skipped slot">
<script src="/common/reftest-wait.js"></script>
<script>
window.customElements.define("my-element", class extends HTMLElement {
connectedCallback() {
if (this.shadowRoot) {
this.computeEdges_();
return;
}
this.attachShadow({ mode: 'open' }).innerHTML = `
<style>
#locked {
display: block;
content-visibility: hidden;
}
</style>
<slot name=unlocked></slot>
<div id=locked>
<slot name=locked></slot>
</div>
`;
}
});
</script>
<style>
#container {
width: 150px;
height: 150px;
background: lightblue;
}
div {
width: 50px;
height: 50px;
}
.composited { will-change: transform; }
#one { background: pink; }
#two { background: red; }
</style>
<div id=container>
<my-element>
<div id=one slot=unlocked>FAIL</div>
<div id=two slot=locked>FAIL</div>
</my-element>
</div>
<script>
// Ensure everything is loaded and rendered.
onload = () =>
requestAnimationFrame(() =>
requestAnimationFrame(() =>
requestAnimationFrame(() => {
// Reslot the element and composite the other one.
one.slot = "locked";
two.classList.add("composited");
requestAnimationFrame(takeScreenshot);
})));
</script>