blob: 721ce7e538147a20ea4f00a70bacc57c3350ed52 (
plain)
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
73
74
75
76
77
78
79
80
81
|
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="apz_test_utils.js"></script>
<script src="apz_test_native_event_utils.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<style>
html, body { margin: 0; }
#big {
height: 250vh;
width: 100%;
}
#target {
height: 500px;
width: 100%;
background: red;
}
</style>
</head>
<body>
<div id="big">
</div>
<div id="target">
</div>
</body>
<script>
const searchParams = new URLSearchParams(location.search);
async function test() {
// Count the number of scroll events that occur. Instant scrolls should only
// trigger one scroll event, so a scroll event count of 1 indicates that a
// instant scroll was conducted.
let scrollCount = 0;
window.addEventListener("scroll", (e) => {
scrollCount += 1;
});
let scrollendPromise = promiseScrollend();
// Call the given programmatic scroll with behavior: smooth.
switch (searchParams.get("action")) {
case "scrollIntoView":
target.scrollIntoView({behavior: "smooth"});
break;
case "scrollBy":
document.scrollingElement.scrollBy({top: 500, behavior: "smooth"});
break;
case "scrollTo":
document.scrollingElement.scrollTo({top: 500, behavior: "smooth"});
break;
case "scroll":
document.scrollingElement.scroll({top: 500, behavior: "smooth"});
break;
default:
ok(false, "Unsupported action: " + searchParams.get("action"));
break;
}
await scrollendPromise;
// If general.smoothScroll is set, the behavior of the scroll should be
// "smooth". If general.smoothScroll is disabled, we should respect it and
// the scrolls should instant regardless of the specified behavior.
if (SpecialPowers.getBoolPref("general.smoothScroll")) {
info("final enabled scroll count: " + scrollCount);
ok(scrollCount > 1, "The programmatic scroll should create more than one scroll event");
} else {
info("final disabled scroll count: " + scrollCount);
ok(scrollCount == 1, "The programmatic scroll should be instant with one scroll event");
}
}
waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);
</script>
</html>
|
