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