| <!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> |
| #overscrollXDiv { |
| width: 600px; |
| height: 600px; |
| overflow: scroll; |
| overscroll-behavior-x: contain; |
| } |
| #overscrollYDiv { |
| width: 500px; |
| height: 500px; |
| overflow: scroll; |
| overscroll-behavior-y: none; |
| } |
| #targetDiv { |
| width: 400px; |
| height: 400px; |
| overflow: scroll; |
| } |
| .content { |
| width:800px; |
| height:800px; |
| } |
| </style> |
| |
| <body style="margin:0" onload=runTest()> |
| <div id="overscrollXDiv"> |
| <div class=content> |
| <div id="overscrollYDiv"> |
| <div class=content> |
| <div id="targetDiv"> |
| <div class="content"> |
| </div> |
| </div> |
| </div> |
| </div> |
| </div> |
| </div> |
| </body> |
| |
| <script> |
| var target_div = document.getElementById('targetDiv'); |
| var overscrolled_x_delta = 0; |
| var overscrolled_y_delta = 0; |
| function onOverscrollX(event) { |
| assert_false(event.cancelable); |
| assert_false(event.bubbles); |
| overscrolled_x_delta = event.deltaX; |
| } |
| function onOverscrollY(event) { |
| assert_false(event.cancelable); |
| assert_false(event.bubbles); |
| overscrolled_y_delta = event.deltaY; |
| } |
| // Test that both "onoverscroll" and addEventListener("overscroll"... work. |
| document.getElementById('overscrollXDiv').onoverscroll = onOverscrollX; |
| document.getElementById('overscrollYDiv'). |
| addEventListener("overscroll", onOverscrollY); |
| |
| function runTest() { |
| promise_test (async (t) => { |
| // Make sure that no overscroll event is sent to document or target_div. |
| document.addEventListener("overscroll", |
| t.unreached_func("Document got unexpected overscroll event.")); |
| target_div.addEventListener("overscroll", |
| t.unreached_func("target_div got unexpected overscroll event.")); |
| await waitForCompositorCommit(); |
| // Scroll up on target div and wait for the element with overscroll-y to get |
| // overscroll event. |
| await touchScrollInTarget(300, target_div, 'up'); |
| await waitFor(() => { return overscrolled_y_delta < 0; }, |
| 'Expected element 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 element with overscroll-x to |
| // get overscroll event. |
| await touchScrollInTarget(300, target_div, 'left'); |
| await waitFor(() => { return overscrolled_x_delta < 0; }, |
| 'Expected element did not receive overscroll event after scroll left ' + |
| 'on target.'); |
| assert_equals(target_div.scrollLeft, 0); |
| }, 'Tests that the last element in the cut scroll chain gets overscroll ' + |
| 'event when no element scrolls by touch.'); |
| } |
| </script> |
