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Issue 1780163002: Revert of IntersectionObserver: use an idle callback to send notifications. (Closed) Base URL: https://chromium.googlesource.com/chromium/src@master
Patch Set: Created 4 years, 9 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 <div style="width:100%; height:700px;"></div>
5 <div style="white-space: nowrap;"> 5 <div style="white-space: nowrap;">
6 <div style="display: inline-block; width: 1000px; height: 100px"></div> 6 <div style="display: inline-block; width: 1000px; height: 100px"></div>
7 <div id="target" style="display: inline-block; background-color: green; width: 100px; height:100px"></div> 7 <div id="target" style="display: inline-block; background-color: green; width: 100px; height:100px"></div>
8 <div style="display: inline-block; width: 1000px; height: 100px"></div> 8 <div style="display: inline-block; width: 1000px; height: 100px"></div>
9 </div> 9 </div>
10 <div style="width:100%; height:700px;"></div> 10 <div style="width:100%; height:700px;"></div>
11 11
12 <script> 12 <script>
13 description("Intersection observer test with root margin and implicit root."); 13 description("Intersection observer test with root margin and implicit root.");
14 var target = document.getElementById("target"); 14 var target = document.getElementById("target");
15 var entries = []; 15 var entries = [];
16 var observer = new IntersectionObserver(
17 changes => { entries = entries.concat(changes) },
18 { rootMargin: "10px 20% 40% 30px" }
19 );
20 16
21 shouldNotThrow("new IntersectionObserver(c => {}, { rootMargin: '1.4px' })"); 17 function observer_callback(changes) {
22 shouldNotThrow("new IntersectionObserver(c => {}, { rootMargin: '1.4px 2px' })") ; 18 for (var i in changes)
23 shouldNotThrow("new IntersectionObserver(c => {}, { rootMargin: '1.4px 2px 3%' } )"); 19 entries.push(changes[i]);
24 shouldNotThrow("new IntersectionObserver(c => {}, { rootMargin: '1.4px 2px 3% 40 px junk junk junk' })"); 20 }
25 21
26 onload = function() { 22 var observer = new IntersectionObserver(observer_callback, {
23 rootMargin: "10px 20% 40% 30px"
24 });
27 observer.observe(target); 25 observer.observe(target);
28 entries = entries.concat(observer.takeRecords());
29 shouldBeEqualToNumber("entries.length", 0);
30 // See README for explanation of double RAF.
31 requestAnimationFrame(() => { requestAnimationFrame(step0) });
32 }
33 26
34 function step0() { 27 function step0() {
35 entries = entries.concat(observer.takeRecords()); 28 setTimeout(function() {
36 shouldBeEqualToNumber("entries.length", 0); 29 shouldNotThrow("new IntersectionObserver(observer_callback, { rootMargin: '1.4px' })");
37 document.scrollingElement.scrollLeft = 100; 30 shouldNotThrow("new IntersectionObserver(observer_callback, { rootMargin: '1.4px 2px' })");
38 requestAnimationFrame(step1); 31 shouldNotThrow("new IntersectionObserver(observer_callback, { rootMargin: '1.4px 2px 3%' })");
39 } 32 shouldNotThrow("new IntersectionObserver(observer_callback, { rootMargin: '1.4px 2px 3% 40px junk junk junk' })");
33 shouldBeEqualToNumber("entries.length", 0);
34 document.scrollingElement.scrollLeft = 100;
35 requestAnimationFrame(step1);
36 });
37 }
40 38
41 function step1() { 39 function step1() {
42 entries = entries.concat(observer.takeRecords()); 40 setTimeout(function() {
43 shouldBeEqualToNumber("entries.length", 1); 41 shouldBeEqualToNumber("entries.length", 1);
44 if (entries.length > 0) { 42 shouldBeEqualToNumber("entries[0].boundingClientRect.left", 912);
45 shouldBeEqualToNumber("entries.length", 1); 43 shouldBeEqualToNumber("entries[0].boundingClientRect.right", 1012);
46 shouldBeEqualToNumber("entries[0].boundingClientRect.left", 912); 44 shouldBeEqualToNumber("entries[0].boundingClientRect.top", 708);
47 shouldBeEqualToNumber("entries[0].boundingClientRect.right", 1012); 45 shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 808);
48 shouldBeEqualToNumber("entries[0].boundingClientRect.top", 708); 46 shouldBeEqualToNumber("entries[0].intersectionRect.left", 912);
49 shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 808); 47 shouldBeEqualToNumber("entries[0].intersectionRect.right", 942);
50 shouldBeEqualToNumber("entries[0].intersectionRect.left", 912); 48 shouldBeEqualToNumber("entries[0].intersectionRect.top", 708);
51 shouldBeEqualToNumber("entries[0].intersectionRect.right", 942); 49 shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 808);
52 shouldBeEqualToNumber("entries[0].intersectionRect.top", 708); 50 shouldBeEqualToNumber("entries[0].rootBounds.left", -30);
53 shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 808); 51 shouldBeEqualToNumber("entries[0].rootBounds.right", 942);
54 shouldBeEqualToNumber("entries[0].rootBounds.left", -30); 52 shouldBeEqualToNumber("entries[0].rootBounds.top", -10);
55 shouldBeEqualToNumber("entries[0].rootBounds.right", 942); 53 shouldBeEqualToNumber("entries[0].rootBounds.bottom", 819);
56 shouldBeEqualToNumber("entries[0].rootBounds.top", -10); 54 shouldEvaluateToSameObject("entries[0].target", target);
57 shouldBeEqualToNumber("entries[0].rootBounds.bottom", 819); 55 document.scrollingElement.scrollTop = 800;
58 shouldEvaluateToSameObject("entries[0].target", target); 56 requestAnimationFrame(step2);
57 });
59 } 58 }
60 document.scrollingElement.scrollTop = 800;
61 requestAnimationFrame(step2);
62 }
63 59
64 function step2() { 60 function step2() {
65 entries = entries.concat(observer.takeRecords()); 61 setTimeout(function() {
66 shouldBeEqualToNumber("entries.length", 1); 62 shouldBeEqualToNumber("entries.length", 1);
67 document.scrollingElement.scrollTop = 900; 63 document.scrollingElement.scrollTop = 900;
68 requestAnimationFrame(step3); 64 requestAnimationFrame(step3);
69 } 65 });
66 }
70 67
71 function step3() { 68 function step3() {
72 entries = entries.concat(observer.takeRecords()); 69 setTimeout(function() {
73 shouldBeEqualToNumber("entries.length", 2); 70 shouldBeEqualToNumber("entries.length", 2);
74 if (entries.length > 1) { 71 shouldBeEqualToNumber("entries[1].boundingClientRect.left", 912);
75 shouldBeEqualToNumber("entries[1].boundingClientRect.left", 912); 72 shouldBeEqualToNumber("entries[1].boundingClientRect.right", 1012);
76 shouldBeEqualToNumber("entries[1].boundingClientRect.right", 1012); 73 shouldBeEqualToNumber("entries[1].boundingClientRect.top", -192);
77 shouldBeEqualToNumber("entries[1].boundingClientRect.top", -192); 74 shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", -92);
78 shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", -92); 75 shouldBeEqualToNumber("entries[1].intersectionRect.left", 0);
79 shouldBeEqualToNumber("entries[1].intersectionRect.left", 0); 76 shouldBeEqualToNumber("entries[1].intersectionRect.right", 0);
80 shouldBeEqualToNumber("entries[1].intersectionRect.right", 0); 77 shouldBeEqualToNumber("entries[1].intersectionRect.top", 0);
81 shouldBeEqualToNumber("entries[1].intersectionRect.top", 0); 78 shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0);
82 shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0); 79 shouldBeEqualToNumber("entries[1].rootBounds.left", -30);
83 shouldBeEqualToNumber("entries[1].rootBounds.left", -30); 80 shouldBeEqualToNumber("entries[1].rootBounds.right", 942);
84 shouldBeEqualToNumber("entries[1].rootBounds.right", 942); 81 shouldBeEqualToNumber("entries[1].rootBounds.top", -10);
85 shouldBeEqualToNumber("entries[1].rootBounds.top", -10); 82 shouldBeEqualToNumber("entries[1].rootBounds.bottom", 819);
86 shouldBeEqualToNumber("entries[1].rootBounds.bottom", 819); 83 shouldEvaluateToSameObject("entries[1].target", target);
87 shouldEvaluateToSameObject("entries[1].target", target); 84
85 finishJSTest();
86 document.scrollingElement.scrollLeft = 0;
87 document.scrollingElement.scrollTop = 0;
88 });
88 } 89 }
89 finishJSTest(); 90
90 document.scrollingElement.scrollLeft = 0; 91 step0();
91 document.scrollingElement.scrollTop = 0;
92 }
93 </script> 92 </script>
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