| <!doctype HTML> |
| |
| <!-- |
| Runs acquire, constructs a subtree, calls update and measures it in |
| the promise resolotion, which also removes the element from the DOM. |
| --> |
| |
| <style> |
| #container { |
| contain: content; |
| width: 100px; |
| height: 100px; |
| background: lightgreen; |
| } |
| .child { |
| width: 20px; |
| height: 20%; |
| background: cyan; |
| } |
| #empty { |
| background: red; |
| width: max-content; |
| } |
| #spacer { |
| width: 150px; |
| height: 150px; |
| background: green; |
| } |
| </style> |
| |
| <div id="empty"></div> |
| <div id="spacer"></div> |
| <div id="log"></div> |
| |
| <script> |
| if (window.testRunner) |
| window.testRunner.waitUntilDone(); |
| |
| function finish() { |
| if (window.testRunner) |
| window.testRunner.notifyDone(); |
| } |
| |
| function measureAndRemove() { |
| let log = document.getElementById("log"); |
| log.innerHTML += "" + document.getElementById("0").offsetTop; |
| log.innerHTML += " " + document.getElementById("1").offsetTop; |
| log.innerHTML += " " + document.getElementById("2").offsetTop; |
| log.innerHTML += " " + document.getElementById("empty").offsetTop; |
| log.innerHTML += " " + document.getElementById("spacer").offsetTop; |
| document.getElementById("container").remove(); |
| } |
| |
| function createChild(id) { |
| let child = document.createElement("div"); |
| child.classList = "child"; |
| child.id = id; |
| return child; |
| } |
| |
| function construct(container) { |
| container.appendChild(createChild("0")); |
| container.appendChild(createChild("1")); |
| container.appendChild(createChild("2")); |
| } |
| |
| function runTest() { |
| let container = document.createElement("div"); |
| container.id = "container"; |
| container.getDisplayLock().acquire({ timeout: Infinity }).then(() => { |
| construct(container); |
| document.getElementById("empty").appendChild(container); |
| container.getDisplayLock().update().then(measureAndRemove).then(finish); |
| }); |
| } |
| |
| window.onload = runTest; |
| </script> |
| |
