| <!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> |
| #targetDiv { |
| width: 200px; |
| height: 200px; |
| overflow: scroll; |
| } |
| |
| #innerDiv { |
| width: 400px; |
| height: 400px; |
| } |
| </style> |
| |
| <body style="margin:0" onload=runTest()> |
| <div id="targetDiv"> |
| <div id="innerDiv"> |
| </div> |
| </div> |
| </body> |
| |
| <script> |
| var target_div = document.getElementById('targetDiv'); |
| var overscrolled_x_delta = 0; |
| var overscrolled_y_delta = 0; |
| function onOverscroll(event) { |
| assert_false(event.cancelable); |
| // overscroll events are bubbled when the target node is document. |
| assert_true(event.bubbles); |
| overscrolled_x_delta = event.deltaX; |
| overscrolled_y_delta = event.deltaY; |
| } |
| document.addEventListener("overscroll", onOverscroll); |
| |
| function runTest() { |
| promise_test (async (t) => { |
| // Make sure that no overscroll event is sent to target_div. |
| target_div.addEventListener("overscroll", |
| t.unreached_func("target_div got unexpected overscroll event.")); |
| await waitForCompositorCommit(); |
| |
| // Scroll up on target div and wait for the doc to get overscroll event. |
| await touchScrollInTarget(300, target_div, 'up'); |
| await waitFor(() => { return overscrolled_y_delta < 0; }, |
| 'Document did not receive overscroll event after scroll up on target.'); |
| assert_equals(target_div.scrollTop, 0); |
| |
| // Scroll left on target div and wait for the doc to get overscroll event. |
| await touchScrollInTarget(300, target_div, 'left'); |
| await waitFor(() => { return overscrolled_x_delta < 0; }, |
| 'Document did not receive overscroll event after scroll left on target.'); |
| assert_equals(target_div.scrollLeft, 0); |
| }, 'Tests that the document gets overscroll event when no element scrolls ' + |
| 'after touch scrolling.'); |
| } |
| </script> |
