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Issue 1913843004:
Implementing document.setRootScroller API for main thread scrolling. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@overscrollController| OLD | NEW |
|---|---|
| (Empty) | |
| 1 <!DOCTYPE html> | |
| 2 <style> | |
| 3 ::-webkit-scrollbar { | |
| 4 width: 0px; | |
| 5 height: 0px; | |
| 6 } | |
| 7 | |
| 8 body, html { | |
| 9 width: 100%; | |
| 10 height: 100%; | |
| 11 } | |
| 12 | |
| 13 body { | |
| 14 margin: 0px; | |
| 15 } | |
| 16 | |
| 17 #container { | |
| 18 width: 1000px; | |
| 19 height: 1000px; | |
| 20 overflow: auto; | |
| 21 } | |
| 22 | |
| 23 #spacer { | |
| 24 width: 2000px; | |
| 25 height: 1900px; | |
| 26 } | |
| 27 </style> | |
| 28 | |
| 29 <div id="container"> | |
| 30 <div id="spacer"> | |
| 31 <span id="spanner">TEST</span> | |
| 32 </div> | |
| 33 </div> | |
| 34 | |
| 35 <script src="../../resources/testharness.js"></script> | |
| 36 <script src="../../resources/testharnessreport.js"></script> | |
| 37 | |
| 38 <script> | |
| 39 test(function() { | |
| 40 assert_false(typeof document.setRootScroller === 'undefined'); | |
| 41 }, 'setRootScroller API enabled'); | |
| 42 test(function() { | |
| 43 // Setting the container object should succeed. | |
| 44 assert_equals(document.rootScroller, document.documentElement); | |
| 45 var container = document.querySelector('#container'); | |
| 46 document.setRootScroller(container); | |
| 47 assert_equals(document.rootScroller, container); | |
| 48 | |
| 49 // Trying to set the <span> should fail with an exception thrown since a | |
| 50 // span is not a valid scroller. | |
| 51 assert_throws( | |
| 52 'InvalidStateError', | |
| 53 function() { | |
| 54 document.setRootScroller(document.querySelector('#spanner')); | |
| 55 }, | |
| 56 'Trying to set a non-block flow element should throw'); | |
| 57 assert_equals(document.rootScroller, container); | |
| 58 | |
| 59 // Scroll the container <div> past the end. The scrolls should not chain | |
| 60 // past the rootScroller to the scrollingElement. | |
| 61 if (typeof eventSender !== 'undefined') { | |
| 62 eventSender.gestureScrollBegin(500, 500); | |
| 63 eventSender.gestureScrollUpdate(-300, -300); | |
| 64 eventSender.gestureScrollUpdate(-300, -300); | |
| 65 eventSender.gestureScrollUpdate(-300, -300); | |
| 66 eventSender.gestureScrollUpdate(-300, -300); | |
| 67 eventSender.gestureScrollEnd(0, 0); | |
|
tdresser
2016/04/26 20:43:49
This should probably do multiple short scrolls, to
bokan
2016/04/26 23:06:23
Done.
| |
| 68 | |
| 69 assert_equals(container.scrollTop, 900); | |
| 70 assert_equals(container.scrollLeft, 1000); | |
| 71 assert_equals(document.scrollingElement.scrollTop, 0); | |
| 72 assert_equals(document.scrollingElement.scrollLeft, 0); | |
| 73 } | |
| 74 | |
| 75 // Making the current rootScroller an invalid scroller should reset the | |
| 76 // rootScroller to the default, the documentElement. | |
| 77 container.style.display = "none"; | |
| 78 newRootScroller = document.rootScroller; | |
| 79 assert_equals(newRootScroller, document.documentElement); | |
| 80 | |
| 81 container.style.display = "block"; | |
| 82 assert_equals(newRootScroller, document.documentElement); | |
| 83 | |
| 84 // Now scrolling over the <div> should scroll the scrollingElement. | |
| 85 if (typeof eventSender !== 'undefined') { | |
| 86 eventSender.gestureScrollBegin(500, 500); | |
| 87 eventSender.gestureScrollUpdate(-300, -300); | |
| 88 eventSender.gestureScrollUpdate(-300, -300); | |
| 89 eventSender.gestureScrollUpdate(-300, -300); | |
| 90 eventSender.gestureScrollUpdate(-300, -300); | |
| 91 eventSender.gestureScrollEnd(0, 0); | |
| 92 | |
| 93 assert_equals(document.scrollingElement.scrollTop, 400); | |
| 94 assert_equals(document.scrollingElement.scrollLeft, 200); | |
| 95 } | |
| 96 | |
| 97 // Don't output the text in spanner. | |
| 98 document.querySelector('#spanner').style.display = 'none'; | |
| 99 | |
| 100 }, 'Test the setRootScroller API basic functionality'); | |
| 101 </script> | |
| OLD | NEW |
