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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 id="target" style="background-color: green; width:100px; height:100px"></di v> 5 <div id="target" style="background-color: green; width:100px; height:100px"></di v>
6 <div style="width:100%; height:700px;"></div> 6 <div style="width:100%; height:700px;"></div>
7 7
8 <script> 8 <script>
9 description("Intersection observer test with multiple thresholds."); 9 description("Intersection observer test with multiple thresholds.");
10 var target = document.getElementById("target"); 10 var target = document.getElementById("target");
11 var entries = []; 11 var entries = [];
12 var observer = new IntersectionObserver(
13 changes => { entries = entries.concat(changes) },
14 { threshold: [0, 0.25, 0.5, 0.75, 1] }
15 );
16 12
17 onload = function() { 13 observer_callback = function(changes) {
14 for (var i in changes)
15 entries.push(changes[i]);
16 };
17 var observer = new IntersectionObserver(observer_callback, {
18 threshold: [0, 0.25, 0.5, 0.75, 1]
19 });
18 observer.observe(target); 20 observer.observe(target);
19 entries = entries.concat(observer.takeRecords());
20 shouldBeEqualToNumber("entries.length", 0);
21 // See README for explanation of double RAF.
22 requestAnimationFrame(() => { requestAnimationFrame(step0) });
23 }
24 21
25 function step0() { 22 function step0() {
26 entries = entries.concat(observer.takeRecords()); 23 setTimeout(function() {
27 shouldBeEqualToNumber("entries.length", 0); 24 shouldBeEqualToNumber("entries.length", 0);
28 document.scrollingElement.scrollTop = 120; 25 document.scrollingElement.scrollTop = 120;
29 requestAnimationFrame(step1); 26 requestAnimationFrame(step1);
30 } 27 });
28 }
31 29
32 function step1() { 30 function step1() {
33 entries = entries.concat(observer.takeRecords()); 31 setTimeout(function() {
34 shouldBeEqualToNumber("entries.length", 1); 32 shouldBeEqualToNumber("entries.length", 1);
35 if (entries.length > 0) { 33 shouldBeEqualToNumber("entries[0].boundingClientRect.left", 8);
36 shouldBeEqualToNumber("entries[0].boundingClientRect.left", 8); 34 shouldBeEqualToNumber("entries[0].boundingClientRect.right", 108);
37 shouldBeEqualToNumber("entries[0].boundingClientRect.right", 108); 35 shouldBeEqualToNumber("entries[0].boundingClientRect.top", 588);
38 shouldBeEqualToNumber("entries[0].boundingClientRect.top", 588); 36 shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 688);
39 shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 688); 37 shouldBeEqualToNumber("entries[0].intersectionRect.left", 8);
40 shouldBeEqualToNumber("entries[0].intersectionRect.left", 8); 38 shouldBeEqualToNumber("entries[0].intersectionRect.right", 108);
41 shouldBeEqualToNumber("entries[0].intersectionRect.right", 108); 39 shouldBeEqualToNumber("entries[0].intersectionRect.top", 588);
42 shouldBeEqualToNumber("entries[0].intersectionRect.top", 588); 40 shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 600);
43 shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 600); 41 shouldBeEqualToNumber("entries[0].rootBounds.left", 0);
44 shouldBeEqualToNumber("entries[0].rootBounds.left", 0); 42 shouldBeEqualToNumber("entries[0].rootBounds.right", 785);
45 shouldBeEqualToNumber("entries[0].rootBounds.right", 785); 43 shouldBeEqualToNumber("entries[0].rootBounds.top", 0);
46 shouldBeEqualToNumber("entries[0].rootBounds.top", 0); 44 shouldBeEqualToNumber("entries[0].rootBounds.bottom", 600);
47 shouldBeEqualToNumber("entries[0].rootBounds.bottom", 600); 45 shouldEvaluateToSameObject("entries[0].target", target);
48 shouldEvaluateToSameObject("entries[0].target", target); 46 document.scrollingElement.scrollTop = 160;
47 requestAnimationFrame(step2);
48 });
49 } 49 }
50 document.scrollingElement.scrollTop = 160;
51 requestAnimationFrame(step2);
52 }
53 50
54 function step2() { 51 function step2() {
55 entries = entries.concat(observer.takeRecords()); 52 setTimeout(function() {
56 shouldBeEqualToNumber("entries.length", 2); 53 shouldBeEqualToNumber("entries.length", 2);
57 if (entries.length > 1) { 54 shouldBeEqualToNumber("entries[1].boundingClientRect.left", 8);
58 shouldBeEqualToNumber("entries[1].boundingClientRect.left", 8); 55 shouldBeEqualToNumber("entries[1].boundingClientRect.right", 108);
59 shouldBeEqualToNumber("entries[1].boundingClientRect.right", 108); 56 shouldBeEqualToNumber("entries[1].boundingClientRect.top", 548);
60 shouldBeEqualToNumber("entries[1].boundingClientRect.top", 548); 57 shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 648);
61 shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 648); 58 shouldBeEqualToNumber("entries[1].intersectionRect.left", 8);
62 shouldBeEqualToNumber("entries[1].intersectionRect.left", 8); 59 shouldBeEqualToNumber("entries[1].intersectionRect.right", 108);
63 shouldBeEqualToNumber("entries[1].intersectionRect.right", 108); 60 shouldBeEqualToNumber("entries[1].intersectionRect.top", 548);
64 shouldBeEqualToNumber("entries[1].intersectionRect.top", 548); 61 shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 600);
65 shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 600); 62 shouldBeEqualToNumber("entries[1].rootBounds.left", 0);
66 shouldBeEqualToNumber("entries[1].rootBounds.left", 0); 63 shouldBeEqualToNumber("entries[1].rootBounds.right", 785);
67 shouldBeEqualToNumber("entries[1].rootBounds.right", 785); 64 shouldBeEqualToNumber("entries[1].rootBounds.top", 0);
68 shouldBeEqualToNumber("entries[1].rootBounds.top", 0); 65 shouldBeEqualToNumber("entries[1].rootBounds.bottom", 600);
69 shouldBeEqualToNumber("entries[1].rootBounds.bottom", 600); 66 shouldEvaluateToSameObject("entries[1].target", target);
70 shouldEvaluateToSameObject("entries[1].target", target); 67 document.scrollingElement.scrollTop = 200;
68 requestAnimationFrame(step3);
69 });
71 } 70 }
72 document.scrollingElement.scrollTop = 200;
73 requestAnimationFrame(step3);
74 }
75 71
76 function step3() { 72 function step3() {
77 entries = entries.concat(observer.takeRecords()); 73 setTimeout(function() {
78 shouldBeEqualToNumber("entries.length", 3); 74 shouldBeEqualToNumber("entries.length", 3);
79 if (entries.length > 2) { 75 shouldBeEqualToNumber("entries[2].boundingClientRect.left", 8);
80 shouldBeEqualToNumber("entries[2].boundingClientRect.left", 8); 76 shouldBeEqualToNumber("entries[2].boundingClientRect.right", 108);
81 shouldBeEqualToNumber("entries[2].boundingClientRect.right", 108); 77 shouldBeEqualToNumber("entries[2].boundingClientRect.top", 508);
82 shouldBeEqualToNumber("entries[2].boundingClientRect.top", 508); 78 shouldBeEqualToNumber("entries[2].boundingClientRect.bottom", 608);
83 shouldBeEqualToNumber("entries[2].boundingClientRect.bottom", 608); 79 shouldBeEqualToNumber("entries[2].intersectionRect.left", 8);
84 shouldBeEqualToNumber("entries[2].intersectionRect.left", 8); 80 shouldBeEqualToNumber("entries[2].intersectionRect.right", 108);
85 shouldBeEqualToNumber("entries[2].intersectionRect.right", 108); 81 shouldBeEqualToNumber("entries[2].intersectionRect.top", 508);
86 shouldBeEqualToNumber("entries[2].intersectionRect.top", 508); 82 shouldBeEqualToNumber("entries[2].intersectionRect.bottom", 600);
87 shouldBeEqualToNumber("entries[2].intersectionRect.bottom", 600); 83 shouldBeEqualToNumber("entries[2].rootBounds.left", 0);
88 shouldBeEqualToNumber("entries[2].rootBounds.left", 0); 84 shouldBeEqualToNumber("entries[2].rootBounds.right", 785);
89 shouldBeEqualToNumber("entries[2].rootBounds.right", 785); 85 shouldBeEqualToNumber("entries[2].rootBounds.top", 0);
90 shouldBeEqualToNumber("entries[2].rootBounds.top", 0); 86 shouldBeEqualToNumber("entries[2].rootBounds.bottom", 600);
91 shouldBeEqualToNumber("entries[2].rootBounds.bottom", 600); 87 shouldEvaluateToSameObject("entries[2].target", target);
92 shouldEvaluateToSameObject("entries[2].target", target); 88 document.scrollingElement.scrollTop = 240;
89 requestAnimationFrame(step4);
90 });
93 } 91 }
94 document.scrollingElement.scrollTop = 240;
95 requestAnimationFrame(step4);
96 }
97 92
98 function step4() { 93 function step4() {
99 entries = entries.concat(observer.takeRecords()); 94 setTimeout(function() {
100 shouldBeEqualToNumber("entries.length", 4); 95 shouldBeEqualToNumber("entries.length", 4);
101 if (entries.length > 3) { 96 shouldBeEqualToNumber("entries[3].boundingClientRect.left", 8);
102 shouldBeEqualToNumber("entries[3].boundingClientRect.left", 8); 97 shouldBeEqualToNumber("entries[3].boundingClientRect.right", 108);
103 shouldBeEqualToNumber("entries[3].boundingClientRect.right", 108); 98 shouldBeEqualToNumber("entries[3].boundingClientRect.top", 468);
104 shouldBeEqualToNumber("entries[3].boundingClientRect.top", 468); 99 shouldBeEqualToNumber("entries[3].boundingClientRect.bottom", 568);
105 shouldBeEqualToNumber("entries[3].boundingClientRect.bottom", 568); 100 shouldBeEqualToNumber("entries[3].intersectionRect.left", 8);
106 shouldBeEqualToNumber("entries[3].intersectionRect.left", 8); 101 shouldBeEqualToNumber("entries[3].intersectionRect.right", 108);
107 shouldBeEqualToNumber("entries[3].intersectionRect.right", 108); 102 shouldBeEqualToNumber("entries[3].intersectionRect.top", 468);
108 shouldBeEqualToNumber("entries[3].intersectionRect.top", 468); 103 shouldBeEqualToNumber("entries[3].intersectionRect.bottom", 568);
109 shouldBeEqualToNumber("entries[3].intersectionRect.bottom", 568); 104 shouldBeEqualToNumber("entries[3].rootBounds.left", 0);
110 shouldBeEqualToNumber("entries[3].rootBounds.left", 0); 105 shouldBeEqualToNumber("entries[3].rootBounds.right", 785);
111 shouldBeEqualToNumber("entries[3].rootBounds.right", 785); 106 shouldBeEqualToNumber("entries[3].rootBounds.top", 0);
112 shouldBeEqualToNumber("entries[3].rootBounds.top", 0); 107 shouldBeEqualToNumber("entries[3].rootBounds.bottom", 600);
113 shouldBeEqualToNumber("entries[3].rootBounds.bottom", 600); 108 shouldEvaluateToSameObject("entries[3].target", target);
114 shouldEvaluateToSameObject("entries[3].target", target); 109 document.scrollingElement.scrollTop = 740;
110 requestAnimationFrame(step5);
111 });
115 } 112 }
116 document.scrollingElement.scrollTop = 740;
117 requestAnimationFrame(step5);
118 }
119 113
120 function step5() { 114 function step5() {
121 entries = entries.concat(observer.takeRecords()); 115 setTimeout(function() {
122 shouldBeEqualToNumber("entries.length", 5); 116 shouldBeEqualToNumber("entries.length", 5);
123 if (entries.length > 4) { 117 shouldBeEqualToNumber("entries[4].boundingClientRect.left", 8);
124 shouldBeEqualToNumber("entries[4].boundingClientRect.left", 8); 118 shouldBeEqualToNumber("entries[4].boundingClientRect.right", 108);
125 shouldBeEqualToNumber("entries[4].boundingClientRect.right", 108); 119 shouldBeEqualToNumber("entries[4].boundingClientRect.top", -32);
126 shouldBeEqualToNumber("entries[4].boundingClientRect.top", -32); 120 shouldBeEqualToNumber("entries[4].boundingClientRect.bottom", 68);
127 shouldBeEqualToNumber("entries[4].boundingClientRect.bottom", 68); 121 shouldBeEqualToNumber("entries[4].intersectionRect.left", 8);
128 shouldBeEqualToNumber("entries[4].intersectionRect.left", 8); 122 shouldBeEqualToNumber("entries[4].intersectionRect.right", 108);
129 shouldBeEqualToNumber("entries[4].intersectionRect.right", 108); 123 shouldBeEqualToNumber("entries[4].intersectionRect.top", 0);
130 shouldBeEqualToNumber("entries[4].intersectionRect.top", 0); 124 shouldBeEqualToNumber("entries[4].intersectionRect.bottom", 68);
131 shouldBeEqualToNumber("entries[4].intersectionRect.bottom", 68); 125 shouldBeEqualToNumber("entries[4].rootBounds.left", 0);
132 shouldBeEqualToNumber("entries[4].rootBounds.left", 0); 126 shouldBeEqualToNumber("entries[4].rootBounds.right", 785);
133 shouldBeEqualToNumber("entries[4].rootBounds.right", 785); 127 shouldBeEqualToNumber("entries[4].rootBounds.top", 0);
134 shouldBeEqualToNumber("entries[4].rootBounds.top", 0); 128 shouldBeEqualToNumber("entries[4].rootBounds.bottom", 600);
135 shouldBeEqualToNumber("entries[4].rootBounds.bottom", 600); 129 shouldEvaluateToSameObject("entries[4].target", target);
136 shouldEvaluateToSameObject("entries[4].target", target); 130 document.scrollingElement.scrollTop = 760;
131 requestAnimationFrame(step6);
132 });
137 } 133 }
138 document.scrollingElement.scrollTop = 760;
139 requestAnimationFrame(step6);
140 }
141 134
142 function step6() { 135 function step6() {
143 entries = entries.concat(observer.takeRecords()); 136 setTimeout(function() {
144 shouldBeEqualToNumber("entries.length", 6); 137 shouldBeEqualToNumber("entries.length", 6);
145 if (entries.length > 5) { 138 shouldBeEqualToNumber("entries[5].boundingClientRect.left", 8);
146 shouldBeEqualToNumber("entries[5].boundingClientRect.left", 8); 139 shouldBeEqualToNumber("entries[5].boundingClientRect.right", 108);
147 shouldBeEqualToNumber("entries[5].boundingClientRect.right", 108); 140 shouldBeEqualToNumber("entries[5].boundingClientRect.top", -52);
148 shouldBeEqualToNumber("entries[5].boundingClientRect.top", -52); 141 shouldBeEqualToNumber("entries[5].boundingClientRect.bottom", 48);
149 shouldBeEqualToNumber("entries[5].boundingClientRect.bottom", 48); 142 shouldBeEqualToNumber("entries[5].intersectionRect.left", 8);
150 shouldBeEqualToNumber("entries[5].intersectionRect.left", 8); 143 shouldBeEqualToNumber("entries[5].intersectionRect.right", 108);
151 shouldBeEqualToNumber("entries[5].intersectionRect.right", 108); 144 shouldBeEqualToNumber("entries[5].intersectionRect.top", 0);
152 shouldBeEqualToNumber("entries[5].intersectionRect.top", 0); 145 shouldBeEqualToNumber("entries[5].intersectionRect.bottom", 48);
153 shouldBeEqualToNumber("entries[5].intersectionRect.bottom", 48); 146 shouldBeEqualToNumber("entries[5].rootBounds.left", 0);
154 shouldBeEqualToNumber("entries[5].rootBounds.left", 0); 147 shouldBeEqualToNumber("entries[5].rootBounds.right", 785);
155 shouldBeEqualToNumber("entries[5].rootBounds.right", 785); 148 shouldBeEqualToNumber("entries[5].rootBounds.top", 0);
156 shouldBeEqualToNumber("entries[5].rootBounds.top", 0); 149 shouldBeEqualToNumber("entries[5].rootBounds.bottom", 600);
157 shouldBeEqualToNumber("entries[5].rootBounds.bottom", 600); 150 shouldEvaluateToSameObject("entries[5].target", target);
158 shouldEvaluateToSameObject("entries[5].target", target); 151 document.scrollingElement.scrollTop = 800;
152 requestAnimationFrame(step7);
153 });
159 } 154 }
160 document.scrollingElement.scrollTop = 800;
161 requestAnimationFrame(step7);
162 }
163 155
164 function step7() { 156 function step7() {
165 entries = entries.concat(observer.takeRecords()); 157 setTimeout(function() {
166 shouldBeEqualToNumber("entries.length", 7); 158 shouldBeEqualToNumber("entries.length", 7);
167 if (entries.length > 6) { 159 shouldBeEqualToNumber("entries[6].boundingClientRect.left", 8);
168 shouldBeEqualToNumber("entries[6].boundingClientRect.left", 8); 160 shouldBeEqualToNumber("entries[6].boundingClientRect.right", 108);
169 shouldBeEqualToNumber("entries[6].boundingClientRect.right", 108); 161 shouldBeEqualToNumber("entries[6].boundingClientRect.top", -92);
170 shouldBeEqualToNumber("entries[6].boundingClientRect.top", -92); 162 shouldBeEqualToNumber("entries[6].boundingClientRect.bottom", 8);
171 shouldBeEqualToNumber("entries[6].boundingClientRect.bottom", 8); 163 shouldBeEqualToNumber("entries[6].intersectionRect.left", 8);
172 shouldBeEqualToNumber("entries[6].intersectionRect.left", 8); 164 shouldBeEqualToNumber("entries[6].intersectionRect.right", 108);
173 shouldBeEqualToNumber("entries[6].intersectionRect.right", 108); 165 shouldBeEqualToNumber("entries[6].intersectionRect.top", 0);
174 shouldBeEqualToNumber("entries[6].intersectionRect.top", 0); 166 shouldBeEqualToNumber("entries[6].intersectionRect.bottom", 8);
175 shouldBeEqualToNumber("entries[6].intersectionRect.bottom", 8); 167 shouldBeEqualToNumber("entries[6].rootBounds.left", 0);
176 shouldBeEqualToNumber("entries[6].rootBounds.left", 0); 168 shouldBeEqualToNumber("entries[6].rootBounds.right", 785);
177 shouldBeEqualToNumber("entries[6].rootBounds.right", 785); 169 shouldBeEqualToNumber("entries[6].rootBounds.top", 0);
178 shouldBeEqualToNumber("entries[6].rootBounds.top", 0); 170 shouldBeEqualToNumber("entries[6].rootBounds.bottom", 600);
179 shouldBeEqualToNumber("entries[6].rootBounds.bottom", 600); 171 shouldEvaluateToSameObject("entries[6].target", target);
180 shouldEvaluateToSameObject("entries[6].target", target); 172 document.scrollingElement.scrollTop = 820;
173 requestAnimationFrame(step8);
174 });
181 } 175 }
182 document.scrollingElement.scrollTop = 820;
183 requestAnimationFrame(step8);
184 }
185 176
186 function step8() { 177 function step8() {
187 entries = entries.concat(observer.takeRecords()); 178 setTimeout(function() {
188 shouldBeEqualToNumber("entries.length", 8); 179 shouldBeEqualToNumber("entries.length", 8);
189 if (entries.length > 7) { 180 shouldBeEqualToNumber("entries[7].boundingClientRect.left", 8);
190 shouldBeEqualToNumber("entries[7].boundingClientRect.left", 8); 181 shouldBeEqualToNumber("entries[7].boundingClientRect.right", 108);
191 shouldBeEqualToNumber("entries[7].boundingClientRect.right", 108); 182 shouldBeEqualToNumber("entries[7].boundingClientRect.top", -112);
192 shouldBeEqualToNumber("entries[7].boundingClientRect.top", -112); 183 shouldBeEqualToNumber("entries[7].boundingClientRect.bottom", -12);
193 shouldBeEqualToNumber("entries[7].boundingClientRect.bottom", -12); 184 shouldBeEqualToNumber("entries[7].intersectionRect.left", 0);
194 shouldBeEqualToNumber("entries[7].intersectionRect.left", 0); 185 shouldBeEqualToNumber("entries[7].intersectionRect.right", 0);
195 shouldBeEqualToNumber("entries[7].intersectionRect.right", 0); 186 shouldBeEqualToNumber("entries[7].intersectionRect.top", 0);
196 shouldBeEqualToNumber("entries[7].intersectionRect.top", 0); 187 shouldBeEqualToNumber("entries[7].intersectionRect.bottom", 0);
197 shouldBeEqualToNumber("entries[7].intersectionRect.bottom", 0); 188 shouldBeEqualToNumber("entries[7].rootBounds.left", 0);
198 shouldBeEqualToNumber("entries[7].rootBounds.left", 0); 189 shouldBeEqualToNumber("entries[7].rootBounds.right", 785);
199 shouldBeEqualToNumber("entries[7].rootBounds.right", 785); 190 shouldBeEqualToNumber("entries[7].rootBounds.top", 0);
200 shouldBeEqualToNumber("entries[7].rootBounds.top", 0); 191 shouldBeEqualToNumber("entries[7].rootBounds.bottom", 600);
201 shouldBeEqualToNumber("entries[7].rootBounds.bottom", 600); 192 shouldEvaluateToSameObject("entries[7].target", target);
202 shouldEvaluateToSameObject("entries[7].target", target); 193 finishJSTest();
194 document.scrollingElement.scrollTop = 0;
195 });
203 } 196 }
204 finishJSTest(); 197
205 document.scrollingElement.scrollTop = 0; 198 step0();
206 }
207 </script> 199 </script>
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