| <!DOCTYPE html> |
| <html> |
| <head><title>Tests that a momentum scroll (i.e. a fling) eventually resets back to no-overhang state</title></head> |
| <body> |
| <div id="box" style="height:800px; background: red; border:2px solid black; width:100%"></div> |
| <div id="info">This test requires DRT.</div> |
| <script> |
| if (window.internals) { |
| document.getElementById('info').style.visibility = 'hidden'; |
| internals.settings.setMockScrollbarsEnabled(false); |
| |
| eventSender.mouseMoveTo(10, 10); |
| eventSender.mouseDragBegin(); |
| eventSender.mouseDragEnd(); |
| |
| // Simulate a momentum scroll following the end of a normal scroll. |
| eventSender.mouseMomentumBegin(); |
| eventSender.mouseMomentumScrollBy(0, 250, false, true); |
| eventSender.mouseMomentumEnd(); |
| |
| // The momentum scroll above should have resulted in overflow above the page. |
| // Ensure that it has (via scrollTop) and register an onscroll listener to |
| // ensure that the timer restores the position. |
| if (document.documentElement.scrollTop == 0) { |
| // FAIL: Above didn't result in overscroll. |
| document.getElementById('box').style.background = 'blue'; |
| return; |
| } |
| |
| document.getElementById('box').style.background = 'green'; |
| // Wait for the timer to restore the position. |
| testRunner.waitUntilDone(); |
| var startedScrolling = false; |
| window.onscroll = function() { |
| if (document.documentElement.scrollTop == 0) { |
| testRunner.notifyDone(); |
| } |
| }; |
| } |
| </script> |
| </body> |
| </html> |
