63 lines
1.6 KiB
HTML
63 lines
1.6 KiB
HTML
<!DOCTYPE html>
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<html class="reftest-wait">
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<meta charset="utf-8">
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<title>Content Visibility: shadow dom</title>
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<link rel="author" title="Rakina Zata Amni" href="mailto:rakina@chromium.org">
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<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
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<link rel="match" href="container-with-child-ref.html">
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<meta name="assert" content="content-visibility hidden can be used in a shadow DOM">
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<script src="/common/reftest-wait.js"></script>
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<style>
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.hidden {
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content-visibility: hidden;
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}
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.child {
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width: 50px;
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height: 50px;
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background: green;
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}
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</style>
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<div id="host">
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<div id="slotted">
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Test passes if you can see this text and a green box.
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<div class=child></div>
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</div>
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</div>
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<script>
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async function runTest() {
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// Set up hidden element within shadow root.
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let shadowRoot = host.attachShadow({ mode: "open" });
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let hidden = document.createElement("div");
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shadowRoot.innerHTML = `
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<style>
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.container {
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width: 150px;
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height: 150px;
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background: lightblue;
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}
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</style>`;
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shadowRoot.appendChild(hidden);
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hidden.innerHTML = "<slot></slot>";
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hidden.getBoundingClientRect();
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hidden.classList.add("container");
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hidden.classList.add("hidden");
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requestAnimationFrame(() => {
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slotted.style = "display: none";
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// Do a forced layout outside the hidden subtree.
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host.getBoundingClientRect();
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hidden.classList.remove("hidden");
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slotted.style = "";
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requestAnimationFrame(() => {
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// Check that everything is painted as we expect.
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takeScreenshot();
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});
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});
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}
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window.onload = runTest;
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</script>
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</html>
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