LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-distribute-to-scroll-chain-descendant.html - Issue 1239993005: Revert of Expose scroll customization for touch to JS (behind REF).

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Side by Side Diff: LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-distribute-to-scroll-chain-descendant.html

Issue 1239993005: Revert of Expose scroll customization for touch to JS (behind REF). (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Created 5 years, 5 months ago

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1 <!DOCTYPE html>

2 <html>

3 <head>

4 <meta charset="utf-8">

5 <title>ScrollState constructor behaves correctly</title>

6 <script src="../../../resources/testharness.js"></script>

7 <script src="../../../resources/testharnessreport.js"></script>

8 </head>

9 <body>

10 <script>

11 test(function() {

12 assert_true('ScrollState' in window, "'ScrollState' in window");

13 // TODO(tdresser): Don't rely on window.internals. See crbug.com/483091 for de tails.

14 assert_true(window.internals !== null, "'ScrollState' in window");

15 }, "These tests only work with scroll customization enabled.");

16

17 var elementCount = 10;

18 var remainingNumberOfTimesToBeCalled = elementCount;

19

20 var distributeScroll = function(scrollState) {

21 this.calledOrder = elementCount - remainingNumberOfTimesToBeCalled;

22 remainingNumberOfTimesToBeCalled--;

23 scrollState.distributeToScrollChainDescendant();

24 }

25

26 var elements = [];

27 for (var i = 0; i < elementCount; ++i) {

28 var element = document.createElement("div");

29 element.creationOrder = i;

30 element.setDistributeScroll(distributeScroll.bind(element), "disable-native-sc roll");

31 elements.push(element);

32 }

33

34 if ('ScrollState' in window && window.internals) {

35 test(function() {

36 var scrollState = new ScrollState(100, 0, 0, 0, 0, false, false);

37 window.internals.setScrollChain(scrollState, elements);

38 scrollState.distributeToScrollChainDescendant();

39 assert_equals(0, remainingNumberOfTimesToBeCalled);

40 for (var i = 0; i < elementCount; ++i) {

41 assert_equals(elements[i].creationOrder, elements[i].calledOrder);

42 }

43 }, "distributeToScrollChainDescendant propagates correctly.");

44

45 test(function() {

46 var scrollState = new ScrollState(100, 0, 0, 0, 0, false, false);

47 window.internals.setScrollChain(scrollState, []);

48 assert_equals(0, remainingNumberOfTimesToBeCalled);

49 scrollState.distributeToScrollChainDescendant();

50 assert_equals(0, remainingNumberOfTimesToBeCalled);

51 }, "distributeToScrollChainDescendant with empty scroll chain does nothing.");

52 }

53 </script>

54 </body>

55 </html>

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