blob: 50e67de1aef6d9a5ae647d30b36cd9fad880476e (
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
|
<!DOCTYPE html>
<title>CSS Anchor Positioning Test: Dynamically change @position-try rules in Shadow DOM</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-1/#fallback-rule">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
body { margin: 0; }
#host { width: 200px }
</style>
<div id="host">
<template shadowrootmode="open">
<style>
::slotted(#slotted), :host {
position-try-options: --pf;
position: absolute;
left: 999999px; /* force fallback */
}
</style>
<slot></slot>
</template>
<div id="slotted"></div>
</div>
<script>
test(() => {
assert_equals(host.offsetLeft, 999999);
}, "#host is initially left: 999999px");
test(() => {
assert_equals(slotted.offsetLeft, 999999);
}, "#slotted is initially left: 999999px");
host.shadowRoot.styleSheets[0].insertRule(`
@position-try --pf { left: 100px; }
`);
test(() => {
assert_equals(host.offsetLeft, 100);
}, "#host with inserted @position-try applied");
test(() => {
assert_equals(slotted.offsetLeft, 100);
}, "#slotted with inserted @position-try applied");
</script>
|
