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Issue 1672273002: Enforce containing block requirement for IntersectionObserver. (Closed) Base URL: https://chromium.googlesource.com/chromium/src@master
Patch Set: nits Created 4 years, 10 months ago
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1 <!DOCTYPE html> 1 <!DOCTYPE html>
2 <script src="../resources/js-test.js"></script> 2 <script src="../resources/js-test.js"></script>
3 <script src="helper-functions.js"></script> 3 <script src="helper-functions.js"></script>
4 <div style="width:100%; height:700px;"></div> 4 <style>
5 <iframe id="target-iframe" src="../resources/intersection-observer-subframe.html " style="height: 100px; overflow-y: scroll"></iframe> 5 #root {
6 <div style="width:100%; height:700px;"></div> 6 width: 200px;
7 height: 200px;
8 overflow-y: scroll;
9 }
10 #target {
11 width: 100px;
12 height: 100px;
13 background-color: green;
14 position: absolute;
15 }
16 </style>
17 <div id="root" style="position: absolute">
18 <div id="target" style="left: 50px; top: 250px"></div>
19 </div>
7 20
8 <script> 21 <script>
9 description("Simple intersection observer test with no explicit root and target in an iframe."); 22 description("Test that no notifications are generated when root is not in the containing block chain of target.");
10 var entries = []; 23 var root = document.getElementById("root");
11 var targetIframe = document.getElementById("target-iframe"); 24 var target = document.getElementById("target");
25 var entries = [];
12 26
13 targetIframe.onload = function() { 27 function observer_callback(changes) {
14 var target = targetIframe.contentDocument.getElementById("target"); 28 changes.forEach(function(e) { entries.push(e) });
15 var iframeScroller = targetIframe.contentDocument.scrollingElement; 29 }
16 30 new IntersectionObserver(observer_callback, {root: root}).observe(target);
17 observer_callback = function(changes) {
18 for (var i in changes)
19 entries.push(changes[i]);
20 };
21 var observer = new IntersectionObserver(observer_callback, {});
22 observer.observe(target);
23 31
24 function step0() { 32 function step0() {
25 setTimeout(function() { 33 setTimeout(function() {
26 shouldBeEqualToNumber("entries.length", 0); 34 shouldBeEqualToNumber("entries.length", 0);
27 document.scrollingElement.scrollTop = 200; 35 target.style.top = "10px";
28 requestAnimationFrame(step1); 36 requestAnimationFrame(step1);
29 }); 37 });
30 } 38 }
31 39
32 function step1() { 40 function step1() {
33 setTimeout(function() { 41 setTimeout(function() {
34 shouldBeEqualToNumber("entries.length", 0); 42 shouldBeEqualToNumber("entries.length", 1);
35 iframeScroller.scrollTop = 250; 43 shouldBeEqualToNumber("entries[0].boundingClientRect.left", 58);
44 shouldBeEqualToNumber("entries[0].boundingClientRect.right", 158);
45 shouldBeEqualToNumber("entries[0].boundingClientRect.top", 18);
46 shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 118);
47 shouldBeEqualToNumber("entries[0].intersectionRect.left", 58);
48 shouldBeEqualToNumber("entries[0].intersectionRect.right", 158);
49 shouldBeEqualToNumber("entries[0].intersectionRect.top", 18);
50 shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 118);
51 shouldBeEqualToNumber("entries[0].rootBounds.left", 8);
52 shouldBeEqualToNumber("entries[0].rootBounds.right", 193);
53 shouldBeEqualToNumber("entries[0].rootBounds.top", 8);
54 shouldBeEqualToNumber("entries[0].rootBounds.bottom", 208);
55 shouldEvaluateToSameObject("entries[0].target", target);
56 target.style.top = "250px";
36 requestAnimationFrame(step2); 57 requestAnimationFrame(step2);
37 }); 58 });
38 } 59 }
39 60
40 function step2() { 61 function step2() {
41 setTimeout(function() { 62 setTimeout(function() {
42 shouldBeEqualToNumber("entries.length", 1); 63 shouldBeEqualToNumber("entries.length", 2);
43 shouldBeEqualToNumber("entries[0].boundingClientRect.left", 18); 64 shouldBeEqualToNumber("entries[1].boundingClientRect.left", 58);
44 shouldBeEqualToNumber("entries[0].boundingClientRect.right", 118); 65 shouldBeEqualToNumber("entries[1].boundingClientRect.right", 158);
45 shouldBeEqualToNumber("entries[0].boundingClientRect.top", 468); 66 shouldBeEqualToNumber("entries[1].boundingClientRect.top", 258);
46 shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 568); 67 shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 358);
47 shouldBeEqualToNumber("entries[0].intersectionRect.left", 18); 68 shouldBeEqualToNumber("entries[1].intersectionRect.left", 0);
48 shouldBeEqualToNumber("entries[0].intersectionRect.right", 118); 69 shouldBeEqualToNumber("entries[1].intersectionRect.right", 0);
49 shouldBeEqualToNumber("entries[0].intersectionRect.top", 510); 70 shouldBeEqualToNumber("entries[1].intersectionRect.top", 0);
50 shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 568); 71 shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0);
51 shouldBeEqualToNumber("entries[0].rootBounds.left", 0); 72 shouldBeEqualToNumber("entries[1].rootBounds.left", 8);
52 shouldBeEqualToNumber("entries[0].rootBounds.right", 785); 73 shouldBeEqualToNumber("entries[1].rootBounds.right", 193);
53 shouldBeEqualToNumber("entries[0].rootBounds.top", 0); 74 shouldBeEqualToNumber("entries[1].rootBounds.top", 8);
54 shouldBeEqualToNumber("entries[0].rootBounds.bottom", 600); 75 shouldBeEqualToNumber("entries[1].rootBounds.bottom", 208);
55 shouldEvaluateToSameObject("entries[0].target", target); 76 shouldEvaluateToSameObject("entries[1].target", target);
56 document.scrollingElement.scrollTop = 100; 77 root.style.position = "static";
78 target.style.top = "10px";
57 requestAnimationFrame(step3); 79 requestAnimationFrame(step3);
58 }); 80 });
59 } 81 }
60 82
61 function step3() { 83 function step3() {
62 setTimeout(function() { 84 setTimeout(function() {
63 shouldBeEqualToNumber("entries.length", 2); 85 shouldBeEqualToNumber("entries.length", 2);
64 shouldBeEqualToNumber("entries[1].boundingClientRect.left", 18); 86 target.style.top = "250px";
65 shouldBeEqualToNumber("entries[1].boundingClientRect.right", 118); 87 requestAnimationFrame(step4);
66 shouldBeEqualToNumber("entries[1].boundingClientRect.top", 568); 88 });
67 shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 668); 89 }
68 shouldBeEqualToNumber("entries[1].intersectionRect.left", 0); 90
69 shouldBeEqualToNumber("entries[1].intersectionRect.right", 0); 91 function step4() {
70 shouldBeEqualToNumber("entries[1].intersectionRect.top", 0); 92 setTimeout(function() {
71 shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0); 93 shouldBeEqualToNumber("entries.length", 2);
72 shouldBeEqualToNumber("entries[1].rootBounds.left", 0);
73 shouldBeEqualToNumber("entries[1].rootBounds.right", 785);
74 shouldBeEqualToNumber("entries[1].rootBounds.top", 0);
75 shouldBeEqualToNumber("entries[1].rootBounds.bottom", 600);
76 shouldEvaluateToSameObject("entries[1].target", target);
77 finishJSTest(); 94 finishJSTest();
78 document.scrollingElement.scrollTop = 0;
79 }); 95 });
80 } 96 }
81 97
82 step0(); 98 step0();
83 }
84 </script> 99 </script>
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