| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>CSSOM View - Unrelated scroll gesture while scrollIntoView is ongoing</title> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollintoview"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-actions.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <script src="/dom/events/scrolling/scroll_support.js"></script> |
| </head> |
| <body> |
| <style> |
| .scroller { |
| overflow-y: scroll; |
| height: 200px; |
| width: 200px; |
| background-color: teal; |
| border: solid 1px black; |
| position: relative; |
| display: inline-block; |
| } |
| .space { |
| height: 200vh; |
| width: 200vw; |
| } |
| .box { |
| height: 50px; |
| width: 50px; |
| background-color: purple; |
| } |
| .target { |
| position: absolute; |
| top: 150%; |
| } |
| </style> |
| <div id="programmatic_scroller" class="scroller"> |
| <div class="space"></div> |
| <div class="box target" id="target"></div> |
| </div> |
| <div id="gesture_scroller" class="scroller"> |
| <div class="space"></div> |
| </div> |
| <script> |
| const programmatic_scroller = |
| document.getElementById("programmatic_scroller"); |
| const gesture_scroller = document.getElementById("gesture_scroller"); |
| const target = document.getElementById("target"); |
| |
| promise_test(async (t) => { |
| await waitForCompositorCommit(); |
| |
| const scrollend_promises = [ |
| waitForScrollEndFallbackToDelayWithoutScrollEvent(programmatic_scroller), |
| waitForScrollEndFallbackToDelayWithoutScrollEvent(gesture_scroller) |
| ] |
| // As soon as we observe a scroll event, begin a gesture scroll on the |
| // second scroll container. |
| programmatic_scroller.addEventListener("scroll", async () => { |
| await new test_driver.Actions().scroll(0, 0, 0, 100, |
| { origin: gesture_scroller }) |
| .send(); |
| }, { once: true }); |
| |
| target.scrollIntoView({ behavior: "smooth" }); |
| |
| await Promise.all(scrollend_promises); |
| |
| assert_equals(gesture_scroller.scrollTop, 100, |
| "gesture scroll completed"); |
| assert_approx_equals(programmatic_scroller.scrollTop, target.offsetTop, |
| 1, "scrollIntoView completed"); |
| }, "scrollIntoView is not interrupted by unrelated gesture scroll"); |
| </script> |
| </body> |
| </html> |
