shadowroot-fullscreen-element.html (1930B)
1 <!doctype html> 2 <html> 3 <head> 4 <title>shadowRoot.fullscreenElement works correctly</title> 5 <link rel="author" title="Tim Nguyen" href="https://github.com/nt1m"> 6 <link rel="help" href="https://fullscreen.spec.whatwg.org/#dom-document-fullscreenelement"> 7 </head> 8 <div id="host"> 9 <button onclick="document.exitFullscreen()" id="exitButton">Exit fullscreen</button> 10 </div> 11 <button id="requestButton">Go fullscreen</button> 12 13 <script src="/resources/testharness.js"></script> 14 <script src="/resources/testharnessreport.js"></script> 15 <script src="/resources/testdriver.js"></script> 16 <script src="/resources/testdriver-vendor.js"></script> 17 <script> 18 promise_test(async function() { 19 let host = document.getElementById("host"); 20 host.attachShadow({ mode: "open" }).innerHTML = ` 21 <style> 22 #outer { width: 200px; height: 200px; background: blue } 23 </style> 24 <div id="outer"> 25 <slot></slot> 26 </div> 27 `; 28 let outer = host.shadowRoot.querySelector("#outer"); 29 await new Promise((resolve) => { 30 addEventListener("fullscreenchange", resolve, { once: true }); 31 requestButton.addEventListener("click", () => outer.requestFullscreen()); 32 test_driver.click(requestButton); 33 }); 34 35 assert_equals(outer.getRootNode().fullscreenElement, outer, "Correct shadowRoot.fullscreenElement after entering"); 36 assert_equals(document.fullscreenElement, host, "Correct document.fullscreenElement after entering"); 37 38 await new Promise((resolve) => { 39 addEventListener("fullscreenchange", resolve, { once: true }); 40 test_driver.click(exitButton); 41 }); 42 43 assert_equals(outer.getRootNode().fullscreenElement, null, "Correct shadowRoot.fullscreenElement after exiting"); 44 assert_equals(document.fullscreenElement, null, "Correct document.fullscreenElement after exiting"); 45 }, "shadowRoot.fullscreenElement works correctly"); 46 </script> 47 </html>