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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
<!DOCTYPE html>
<title>@scope - ShadowDOM</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-6/#scope-atrule">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/9025">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=host_plain>
<template shadowrootmode=open>
<style>
@scope (:host) {
.a {
z-index: 1;
}
}
</style>
<div class=a>
</div>
</template>
</div>
<script>
test(() => {
let a = host_plain.shadowRoot.querySelector('.a');
assert_equals(getComputedStyle(a).zIndex, '1');
}, '@scope can match :host');
</script>
<div id=host_functional>
<template shadowrootmode=open>
<style>
@scope (:host(div)) {
.a {
z-index: 1;
}
}
/* Should not match: */
@scope (:host(span)) {
.a {
z-index: 42;
}
}
</style>
<div class=a>
</div>
</template>
</div>
<script>
test(() => {
let a = host_functional.shadowRoot.querySelector('.a');
assert_equals(getComputedStyle(a).zIndex, '1');
}, '@scope can match :host(...)');
</script>
<div id=host_scope_subject>
<template shadowrootmode=open>
<style>
@scope (:host) {
:scope {
z-index: 1;
}
}
</style>
<div class=a>
</div>
</template>
</div>
<script>
test(() => {
assert_equals(getComputedStyle(host_scope_subject).zIndex, '1');
}, ':scope matches host via the scoping root');
</script>
<div id=host_scope_subject_is>
<div class=host>
<template shadowrootmode=open>
<style>
/* Should not match host, nor outside shadow. */
:is(:scope, .a, .host) {
z-index: 2;
}
@scope (:host) {
:is(:scope, .a) {
z-index: 1;
}
}
</style>
<div class=a>
</div>
</template>
</div>
<div class=a>
</div>
</div>
<script>
test(() => {
let host = host_scope_subject_is.querySelector('.host');
assert_equals(getComputedStyle(host).zIndex, '1');
let a = host.shadowRoot.querySelector('.a');
assert_equals(getComputedStyle(a).zIndex, '1');
let a_outside = host_scope_subject_is.querySelector('.a');
assert_equals(getComputedStyle(a_outside).zIndex, 'auto');
}, ':scope within :is() matches host via the scoping root');
</script>
<!-- Tentative. https://github.com/w3c/csswg-drafts/issues/9178 -->
<div id=implicit_scope_shadow_parent>
<div class=host>
<template shadowrootmode=open>
<style>
@scope {
/* Matches host */
:scope {
z-index: 1;
}
:scope > .a {
z-index: 2;
}
}
</style>
<div class=a>
</div>
</template>
</div>
</div>
<script>
test(() => {
let host = implicit_scope_shadow_parent.querySelector('.host');
let a = host.shadowRoot.querySelector('.a');
assert_equals(getComputedStyle(host).zIndex, '1');
assert_equals(getComputedStyle(a).zIndex, '2');
}, 'Implicit @scope as direct child of shadow root');
</script>
<!-- Tentative. https://github.com/w3c/csswg-drafts/issues/9178 -->
<div id=implicit_scope_constructed>
<div class=host>
<template shadowrootmode=open>
<div class=a>
</div>
</template>
</div>
</div>
<script>
test(() => {
let host = implicit_scope_constructed.querySelector('.host');
let sheet = new CSSStyleSheet();
sheet.replaceSync(`
@scope {
:scope {
z-index: 1;
}
:scope .a {
z-index: 2;
}
`);
host.shadowRoot.adoptedStyleSheets = [sheet];
let a = host.shadowRoot.querySelector('.a');
assert_equals(getComputedStyle(host).zIndex, '1');
assert_equals(getComputedStyle(a).zIndex, '2');
}, 'Implicit @scope in construted stylesheet');
</script>
|
