| <!DOCTYPE html> |
| <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="scroll_support.js"></script> |
| <style> |
| div { |
| position: absolute; |
| } |
| #scroller { |
| width: 500px; |
| height: 500px; |
| overflow: scroll; |
| scroll-snap-type: both mandatory; |
| border: solid black 5px; |
| } |
| #space { |
| width: 2000px; |
| height: 2000px; |
| } |
| .target { |
| width: 200px; |
| height: 200px; |
| scroll-snap-align: start; |
| background-color: blue; |
| } |
| </style> |
| |
| <body style="margin:0" onload=runTests()> |
| <div id="scroller"> |
| <div id="space"></div> |
| <div class="target" style="left: 0px; top: 0px;"></div> |
| <div class="target" style="left: 80px; top: 80px;"></div> |
| <div class="target" style="left: 200px; top: 200px;"></div> |
| </div> |
| </body> |
| |
| <script> |
| var scroller = document.getElementById("scroller"); |
| var space = document.getElementById("space"); |
| const MAX_FRAME_COUNT = 700; |
| const MAX_UNCHANGED_FRAME = 20; |
| |
| function scrollTop() { |
| return scroller.scrollTop; |
| } |
| |
| var scroll_arrived_after_scroll_end = false; |
| var scroll_end_arrived = false; |
| scroller.addEventListener("scroll", () => { |
| if (scroll_end_arrived) |
| scroll_arrived_after_scroll_end = true; |
| }); |
| scroller.addEventListener("scrollend", () => { |
| scroll_end_arrived = true; |
| }); |
| |
| function runTests() { |
| promise_test (async () => { |
| await waitForCompositorCommit(); |
| await touchScrollInTarget(100, scroller, 'down'); |
| // Wait for the scroll snap animation to finish. |
| await waitForAnimationEnd(scrollTop); |
| await waitFor(() => { return scroll_end_arrived; }); |
| // Verify that scroll snap animation has finished before firing scrollend event. |
| assert_false(scroll_arrived_after_scroll_end); |
| }, "Tests that scrollend is fired after scroll snap animation completion."); |
| |
| promise_test (async () => { |
| // Reset scroll state. |
| scroller.scrollTo(0, 0); |
| await waitForCompositorCommit(); |
| scroll_end_arrived = false; |
| scroll_arrived_after_scroll_end = false; |
| |
| await touchFlingInTarget(50, scroller, 'down'); |
| // Wait for the scroll snap animation to finish. |
| await waitForAnimationEnd(scrollTop); |
| await waitFor(() => { return scroll_end_arrived; }); |
| // Verify that scroll snap animation has finished before firing scrollend event. |
| assert_false(scroll_arrived_after_scroll_end); |
| }, "Tests that scrollend is fired after fling snap animation completion."); |
| } |
| </script> |
