1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
<!DOCTYPE html>
<meta name="viewport" content="width=device-width,initial-scale=1">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/intersection-observer-test-utils.js"></script>
<style>
body, html {
margin: 0;
}
pre, #log {
position: absolute;
top: 0;
left: 200px;
}
#target {
width: 100px;
height: 100px;
background-color: green;
}
#effects {
opacity: 1;
filter: none;
}
</style>
<div id="effects">
<div id="target"></div>
</div>
<script>
var delay = 100;
var entries = [];
var target;
var effects;
runTestCycle(function() {
target = document.getElementById("target");
effects = document.getElementById("effects");
assert_true(!!target, "target exists");
assert_true(!!effects, "effects exists");
var observer = new IntersectionObserver(function(changes) {
entries = entries.concat(changes)
}, {trackVisibility: true, delay: delay});
observer.observe(target);
entries = entries.concat(observer.takeRecords());
assert_equals(entries.length, 0, "No initial notifications.");
runTestCycle(step0, "First rAF.", delay);
}, "IntersectionObserverV2 in a single document using the implicit root, with a non-zero opacity ancestor.", delay);
function step0() {
effects.style.opacity = "0.99";
runTestCycle(step1, "effects.style.opacity = 0.99", delay);
checkLastEntry(entries, 0, [0, 100, 0, 100, 0, 100, 0, 100, 0, 800, 0, 600, true, true]);
}
function step1() {
effects.style.opacity = "1";
runTestCycle(step2, "effects.style.opacity = 1", delay);
checkLastEntry(entries, 1, [0, 100, 0, 100, 0, 100, 0, 100, 0, 800, 0, 600, true, false]);
}
function step2() {
effects.style.filter = "grayscale(50%)";
runTestCycle(step3, "effects.style.filter = grayscale(50%)", delay);
checkLastEntry(entries, 2, [0, 100, 0, 100, 0, 100, 0, 100, 0, 800, 0, 600, true, true]);
}
function step3() {
checkLastEntry(entries, 3, [0, 100, 0, 100, 0, 100, 0, 100, 0, 800, 0, 600, true, false]);
}
</script>
|
