| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| body { |
| height: 5000px; |
| } |
| |
| #target { |
| width: 200px; |
| height: 200px; |
| background-color: silver; |
| margin: 20px; |
| } |
| </style> |
| <script src="../../../resources/js-test-pre.js"></script> |
| <script src="../../../resources/ui-helper.js"></script> |
| <script> |
| var jsTestIsAsync = true; |
| |
| let wheelEventCount = 0; |
| let windowScrollEventCount = 0; |
| |
| let firstWasCancelable; |
| let firstWasCanceled; |
| let secondWasCancelable; |
| let secondWasCanceled; |
| |
| async function testScroll() |
| { |
| await UIHelper.mouseWheelScrollAt(100, 100); |
| shouldBe('windowScrollEventCount', '0'); |
| |
| shouldBeTrue('firstWasCancelable'); |
| shouldBeTrue('firstWasCanceled'); |
| |
| shouldBeTrue('secondWasCancelable'); |
| shouldBeTrue('secondWasCanceled'); |
| |
| finishJSTest(); |
| } |
| |
| window.addEventListener('load', () => { |
| description('Tests preventDefault on the first event results in the rest of the events being cancelable') |
| let target = document.getElementById('target'); |
| |
| target.addEventListener('wheel', (event) => { |
| if (!wheelEventCount) { |
| firstWasCancelable = event.cancelable; |
| event.preventDefault(); |
| firstWasCanceled = event.defaultPrevented; |
| } else if (wheelEventCount == 1) { |
| secondWasCancelable = event.cancelable; |
| event.preventDefault(); |
| secondWasCanceled = event.defaultPrevented; |
| } |
| ++wheelEventCount; |
| }); |
| |
| window.addEventListener('scroll', () => { |
| ++windowScrollEventCount; |
| }, false); |
| |
| setTimeout(testScroll, 0); |
| }, false); |
| </script> |
| </head> |
| <body> |
| <div id="target"></div> |
| <div id="console"></div> |
| <script src="../../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
