| <!DOCTYPE html> |
| <html> |
| <link rel="match" href="reset-scroll-in-onscroll-expected.html"> |
| <script src='../../resources/gesture-util.js'></script> |
| <head> |
| <style> |
| body, html { |
| margin: 0; |
| } |
| |
| #scroller { |
| position: absolute; |
| clip: rect(0, 1000px, 1000px, 0); |
| width: 300px; |
| height: 300px; |
| overflow: auto; |
| } |
| |
| #spacer { |
| height: 1000px; |
| } |
| |
| #topbox { |
| height: 5px; |
| width: 100%; |
| background-color: green; |
| } |
| </style> |
| <script> |
| window.onload = async () => { |
| if (window.testRunner) |
| window.testRunner.waitUntilDone(); |
| |
| await waitForCompositorCommit(); |
| |
| const scroller = document.getElementById('scroller'); |
| scroller.addEventListener('scroll', () => { |
| scroller.scrollTop = 0; |
| if (window.testRunner) |
| window.testRunner.notifyDone(); |
| }); |
| |
| // Scroll the scroller an arbitrary amount. The scroll should be reset |
| // as soon as the scroll handler is run. The reftest will ensure the |
| // value gets correctly pushed through compositing and the output |
| // appears correctly to the user. |
| const delta = 400; |
| const location = elementCenter(scroller); |
| await smoothScroll(delta, |
| location.x, |
| location.y, |
| GestureSourceType.TOUCH_INPUT, |
| 'down', |
| SPEED_INSTANT); |
| }; |
| </script> |
| </head> |
| <body> |
| <div id="scroller"> |
| <div id="topbox"></div> |
| <div id="spacer"></div> |
| </div> |
| </body> |
| </html> |
