| <!doctype HTML> |
| <html class="reftest-wait"> |
| <meta charset="utf8"> |
| <title>Display Locking: nested acquire</title> |
| <link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org"> |
| <link rel="help" href="https://github.com/WICG/display-locking"> |
| <link rel="match" href="pass-ref.html"> |
| <script src="/common/reftest-wait.js"></script> |
| |
| <style> |
| .container { |
| contain: style layout; |
| } |
| #outer { |
| width: 100px; |
| height: 100px; |
| background: lightblue; |
| } |
| #inner { |
| width: 50px; |
| height: 50px; |
| background: lightgreen; |
| } |
| div > div > div { |
| width: 10px; |
| height: 10px; |
| background: red; |
| } |
| </style> |
| |
| <div id="log"></div> |
| <div id="outer" class="container"> |
| <div id="inner" class="container"></div> |
| </div> |
| |
| <script> |
| function finishTest(status_string) { |
| if (document.getElementById("log").innerHTML === "") |
| document.getElementById("log").innerHTML = status_string; |
| takeScreenshot(); |
| } |
| |
| async function runTest() { |
| const outer = document.getElementById("outer"); |
| const inner = document.getElementById("inner"); |
| |
| await outer.displayLock.acquire({ timeout: Infinity }); |
| // Dirty the inner layout |
| inner.appendChild(document.createElement("div")); |
| inner.displayLock.acquire().then( |
| () => { finishTest("PASS"); }, |
| (e) => { finishTest("FAIL " + e.message); }); |
| } |
| |
| window.onload = runTest; |
| </script> |
| </html> |
