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
|
<!DOCTYPE html>
<meta charset="utf-8">
<title>View Transition: document.activeViewTransition attribute</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/#dom-document-activeviewtransition">
<link rel="author" href="mailto:vmpstr@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/utils.js"></script>
<style>
#target {
width: 100px;
height: 100px;
view-transition-name: target;
}
::view-transition-group(*) {
animation-duration: 1ms;
}
</style>
<div id=target></div>
<script>
promise_test(async t => {
assert_implements(document.startViewTransition, "View Transitions are not supported");
assert_equals(document.activeViewTransition, null, "activeViewTransition is null initially");
const transition = document.startViewTransition(() => {});
assert_equals(document.activeViewTransition, transition, "activeViewTransition returns the running transition");
await transition.finished;
assert_equals(document.activeViewTransition, null, "activeViewTransition is null after transition finishes");
const transition2 = document.startViewTransition(() => {});
assert_equals(document.activeViewTransition, transition2, "activeViewTransition returns the running transition (2)");
transition2.skipTransition();
assert_equals(document.activeViewTransition, null, "activeViewTransition is null after transition is skipped");
}, "document.activeViewTransition returns the active transition");
</script>
|
