| <!DOCTYPE html> |
| <style> |
| ::-webkit-scrollbar { |
| width: 0px; |
| height: 0px; |
| } |
| |
| body, html { |
| width: 100%; |
| height: 100%; |
| margin: 0px; |
| } |
| |
| #rootscroller { |
| width: 100%; |
| height: 100%; |
| overflow: auto; |
| } |
| |
| #dialog { |
| position: fixed; |
| left: 50px; |
| right: 50px; |
| top: 50px; |
| bottom: 50px; |
| overflow: auto; |
| } |
| |
| .bigspace { |
| width: 2000px; |
| height: 2000px; |
| background-image: repeating-linear-gradient( |
| 45deg, |
| yellow, |
| yellow 80px, |
| orange 80px, |
| orange 160px); |
| } |
| |
| .bigspace2 { |
| width: 2000px; |
| height: 2000px; |
| background-image: repeating-linear-gradient( |
| -45deg, |
| blue, |
| blue 80px, |
| red 80px, |
| red 160px); |
| } |
| |
| </style> |
| |
| <div id="rootscroller"> |
| To test manually, try scrolling the red/orange box past the end. Scrolling |
| shouldn't chain up to this blue/red box. |
| <div class="bigspace2"></div> |
| </div> |
| <div id="dialog"> |
| <div class="bigspace"></div> |
| </div> |
| |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| |
| <script> |
| var rootScroller = document.querySelector('#rootscroller'); |
| var dialog = document.querySelector('#dialog'); |
| |
| document.rootScroller = rootScroller; |
| |
| var dialogRect = dialog.getBoundingClientRect(); |
| |
| var x = dialogRect.left + dialogRect.width / 2; |
| var y = dialogRect.top + dialogRect.height / 2; |
| |
| test(function() { |
| if (!window.eventSender) |
| return; |
| |
| // Sanity check - there should be no initial scroll. |
| assert_equals(dialog.scrollLeft, 0); |
| assert_equals(dialog.scrollTop, 0); |
| assert_equals(rootscroller.scrollLeft, 0); |
| assert_equals(rootscroller.scrollTop, 0); |
| |
| // This scroll should fully scroll the dialog |
| eventSender.gestureScrollBegin(x, y); |
| eventSender.gestureScrollUpdate(-3000, 0); |
| eventSender.gestureScrollUpdate(0, -3000); |
| eventSender.gestureScrollEnd(0, 0); |
| |
| assert_equals(dialog.scrollLeft, dialog.scrollWidth - dialog.clientWidth); |
| assert_equals(dialog.scrollTop, dialog.scrollHeight - dialog.clientHeight); |
| assert_equals(rootscroller.scrollLeft, 0); |
| assert_equals(rootscroller.scrollTop, 0); |
| |
| // This scroll would normally chain up to the viewport but the "real" |
| // viewport has no scrolling. Make sure we don't scroll the |
| // document.rootScroller. |
| eventSender.gestureScrollBegin(x, y); |
| eventSender.gestureScrollUpdate(-3000, 0); |
| eventSender.gestureScrollUpdate(0, -3000); |
| eventSender.gestureScrollEnd(0, 0); |
| |
| assert_equals(dialog.scrollLeft, dialog.scrollWidth - dialog.clientWidth); |
| assert_equals(dialog.scrollTop, dialog.scrollHeight - dialog.clientHeight); |
| assert_equals(rootscroller.scrollLeft, 0); |
| assert_equals(rootscroller.scrollTop, 0); |
| |
| }, 'Scrolls on the dialog should not chain to the sibling root scroller.'); |
| </script> |
