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| (Empty) | |
| 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 |
| 12 if (!window.internals || !window.internals.runtimeFlags.scrollCustomizationEnabl
ed) { |
| 13 console.log("These tests only work with window.internals exposed, " + |
| 14 "and require scroll customization."); |
| 15 done(); |
| 16 } |
| 17 |
| 18 var elementCount = 10; |
| 19 var remainingNumberOfTimesToBeCalled = elementCount; |
| 20 |
| 21 var distributeScroll = function(scrollState) { |
| 22 this.calledOrder = elementCount - remainingNumberOfTimesToBeCalled; |
| 23 remainingNumberOfTimesToBeCalled--; |
| 24 scrollState.distributeToScrollChainDescendant(); |
| 25 } |
| 26 |
| 27 var elements = []; |
| 28 for (var i = 0; i < elementCount; ++i) { |
| 29 var element = document.createElement("div"); |
| 30 element.creationOrder = i; |
| 31 element.distributeScroll = distributeScroll; |
| 32 elements.push(element); |
| 33 } |
| 34 |
| 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 }, "distributeToScrollChainDescendant propagates correctly."); |
| 43 |
| 44 test(function() { |
| 45 var scrollState = new ScrollState(100, 0, 0, 0, 0, false, false); |
| 46 window.internals.setScrollChain(scrollState, []); |
| 47 assert_equals(0, remainingNumberOfTimesToBeCalled); |
| 48 scrollState.distributeToScrollChainDescendant(); |
| 49 assert_equals(0, remainingNumberOfTimesToBeCalled); |
| 50 }, "distributeToScrollChainDescendant with empty scroll chain does nothing."); |
| 51 |
| 52 </script> |
| 53 </body> |
| 54 </html> |
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Chromium Code Reviews
Issue 850443002:
Scroll Customization Prototype (Not for review, WIP) (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master