| <!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <style> |
| #scroller { |
| width: 500px; |
| height: 500px; |
| border: 1px solid black; |
| padding: 10px; |
| overflow-y: scroll; |
| will-change: transform; |
| } |
| |
| .filler { |
| height: 1800px; |
| } |
| |
| .behind { |
| position: absolute; |
| top: 10px; |
| width: 50px; |
| height: 50px; |
| z-index: -1; |
| } |
| |
| footer { |
| background-color: red; |
| width: 100%; |
| height: 300px; |
| } |
| |
| body.changed footer { |
| background-color: green; |
| } |
| |
| </style> |
| <script src="../../../resources/ui-helper.js"></script> |
| <script> |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| |
| window.addEventListener('load', async () => { |
| await UIHelper.animationFrame(); |
| scroller.scrollTo(0, 1000); |
| |
| await UIHelper.animationFrame(); |
| document.body.classList.add('changed'); |
| |
| await UIHelper.animationFrame(); |
| scroller.scrollTo(0, 1500); |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| |
| }, false); |
| </script> |
| </head> |
| <body> |
| <div id="scroller"> |
| <div class="behind"> </div> |
| <div class="filler"></div> |
| <footer> </footer> |
| </div> |
| </body> |
| </html> |
| |
