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|---|
| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <div style="width:100%;height:700px;"></div> |
| 3 <div id="root" style="display: inline-block; overflow-y: scroll; height: 200px;"
> |
| 4 <div id="target" style="width:100px; height:300px"></div> |
| 5 <iframe id="target-iframe" src="subframe.html" style="width: 300px; height: 10
0px; overflow-y: scroll" onload="runtests()"></iframe> |
| 6 </div> |
| 7 <div style="width:100%; height:700px;"></div> |
| 8 |
| 9 <script src="../resources/js-test.js"></script> |
| 10 <script src="helper-functions.js"></script> |
| 11 <script> |
| 12 description("Simple intersection observer test with no explicit root and target
in an iframe."); |
| 13 var entries = []; |
| 14 |
| 15 function runtests() { |
| 16 var root = document.getElementById("root"); |
| 17 var targetIframe = document.getElementById("target-iframe"); |
| 18 var target = targetIframe.contentDocument.getElementById("target"); |
| 19 var iframeScroller = targetIframe.contentDocument.scrollingElement; |
| 20 |
| 21 observer_callback = function(changes) { |
| 22 for (var i in changes) { |
| 23 console.log(entryToString(changes[i])); |
| 24 entries.push(changes[i]); |
| 25 } |
| 26 }; |
| 27 var observer = new IntersectionObserver(observer_callback, {"root": document.g
etElementById("root")}); |
| 28 observer.observe(target); |
| 29 |
| 30 // TODO: It shouldn't be necessary to RAF after the call to observer() |
| 31 // and before changing the scroll position, but it is. |
| 32 |
| 33 var expected0 = []; |
| 34 function step0() { |
| 35 setTimeout(function() { |
| 36 checkResults(expected0, "entries"); |
| 37 document.scrollingElement.scrollTop = 250; |
| 38 requestAnimationFrame(step1); |
| 39 }); |
| 40 } |
| 41 |
| 42 var expected1 = []; |
| 43 function step1() { |
| 44 setTimeout(function() { |
| 45 checkResults(expected1, "entries"); |
| 46 iframeScroller.scrollTop = 200; |
| 47 requestAnimationFrame(step2); |
| 48 }); |
| 49 } |
| 50 |
| 51 var expected2 = []; |
| 52 function step2() { |
| 53 setTimeout(function() { |
| 54 checkResults(expected2, "entries"); |
| 55 root.scrollTop = 175; |
| 56 requestAnimationFrame(step3); |
| 57 }); |
| 58 } |
| 59 |
| 60 var expected3 = [ |
| 61 { |
| 62 'boundingClientRect': [ 18, 118, 593, 693 ], |
| 63 'intersectionRect': [ 18, 118, 593, 658 ], |
| 64 'rootBounds' : [ 8, 312, 458, 658 ], |
| 65 'target': target |
| 66 } |
| 67 ]; |
| 68 function step3() { |
| 69 setTimeout(function() { |
| 70 checkResults(expected3, "entries"); |
| 71 document.scrollingElement.scrollTop = 100; |
| 72 requestAnimationFrame(step4); |
| 73 }); |
| 74 } |
| 75 |
| 76 var expected4 = expected3; |
| 77 function step4() { |
| 78 setTimeout(function() { |
| 79 checkResults(expected4, "entries", 1); |
| 80 root.scrollTop = 100; |
| 81 requestAnimationFrame(step5); |
| 82 }); |
| 83 } |
| 84 |
| 85 var expected5 = expected4.concat([ |
| 86 { |
| 87 'boundingClientRect': [ 18, 118, 818, 918 ], |
| 88 'intersectionRect': [ 0, 0, 0, 0 ], |
| 89 'rootBounds' : [ 8, 312, 608, 808 ], |
| 90 'target': target |
| 91 } |
| 92 ]); |
| 93 function step5() { |
| 94 setTimeout(function() { |
| 95 checkResults(expected5, "entries", 1); |
| 96 finishTest(); |
| 97 document.scrollingElement.scrollTop = 0; |
| 98 }); |
| 99 } |
| 100 |
| 101 requestAnimationFrame(step0); |
| 102 } |
| 103 </script> |
| OLD | NEW |
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Chromium Code Reviews
Issue 1449623002:
IntersectionObserver: second cut. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src@master