| <!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <style> |
| body { |
| height: 2000px; |
| } |
| |
| .container { |
| padding: 10px; |
| margin: 20px; |
| border: 1px solid gray; |
| } |
| |
| .scroller { |
| margin-top: 100px; |
| height: 200px; |
| width: 300px; |
| border: 1px solid black; |
| padding: 5px; |
| overflow: scroll; |
| } |
| .content { |
| width: 500%; |
| height: 100%; |
| background-image: repeating-linear-gradient(to right, white, silver 200px); |
| } |
| </style> |
| <script src="../../../resources/js-test-pre.js"></script> |
| <script src="../../../resources/ui-helper.js"></script> |
| <script> |
| var jsTestIsAsync = true; |
| |
| var scroller; |
| var overflowScrollEventCount = 0; |
| var windowScrollEventCount = 0; |
| |
| async function resetScrollPositions() |
| { |
| window.scrollTo(0, 100); |
| scroller.scrollLeft = 100; |
| |
| // Wait for scroll events to fire. |
| await UIHelper.renderingUpdate(); |
| } |
| |
| async function doMouseWheelScroll() |
| { |
| eventSender.monitorWheelEvents(); |
| eventSender.mouseMoveTo(100, 100); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, "began", "none"); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(1, -5, "changed", "none"); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(2, -5, "changed", "none"); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(1, -5, "changed", "none"); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, "ended", "none"); |
| |
| return new Promise(resolve => { |
| eventSender.callAfterScrollingCompletes(() => { |
| requestAnimationFrame(resolve); |
| }); |
| }); |
| } |
| |
| async function scrollTest() |
| { |
| debug(''); |
| debug('Test that events with a small X delta do not cause trapping in the horizontal overflow'); |
| await doMouseWheelScroll(); |
| |
| shouldBe('overflowScrollEventCount == 0', 'true'); |
| shouldBe('windowScrollEventCount > 0', 'true'); |
| |
| finishJSTest(); |
| } |
| |
| window.addEventListener('load', async () => { |
| document.body.addEventListener('wheel', () => { }, false); |
| |
| scroller = document.querySelector('.scroller'); |
| await resetScrollPositions(); |
| |
| scroller.addEventListener('scroll', () => { |
| ++overflowScrollEventCount; |
| }, false); |
| |
| window.addEventListener('scroll', () => { |
| ++windowScrollEventCount; |
| }, false); |
| |
| setTimeout(scrollTest, 0); |
| }, false); |
| </script> |
| </head> |
| <body> |
| <div class="container"> |
| <div class="scroller"> |
| <div class="content"></div> |
| </div> |
| </div> |
| <div id="console"></div> |
| <script src="../../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
