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
|
<!doctype html>
<title>Simple CSSOM manipulation of subrules</title>
<link rel="author" title="Steinar H. Gunderson" href="mailto:sesse@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-nesting-1/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style id="ss"></style>
<script>
test(() => {
let [ss] = document.styleSheets;
assert_equals(ss.cssRules.length, 0);
ss.insertRule('.a { color: red; }');
assert_equals(ss.cssRules.length, 1);
assert_equals(ss.cssRules[0].cssText, '.a { color: red; }');
// Test inserting sub-cssRules, at various positions.
ss.cssRules[0].insertRule('& .b { color: green; }');
ss.cssRules[0].insertRule('& .c { color: blue; }', 1);
ss.cssRules[0].insertRule('& .d { color: hotpink; }', 1);
assert_equals(ss.cssRules[0].cssText,
`.a {
color: red;
& .b { color: green; }
& .d { color: hotpink; }
& .c { color: blue; }
}`, 'inserting should work');
// Test deleting a rule.
ss.cssRules[0].deleteRule(1);
assert_equals(ss.cssRules[0].cssText,
`.a {
color: red;
& .b { color: green; }
& .c { color: blue; }
}`, 'deleting should work');
});
// Test that out-of-bounds throws exceptions and does not affect the stylesheet.
const sampleSheetText =
`.a {
color: red;
& .b { color: green; }
& .c { color: blue; }
}`;
test(() => {
document.getElementById('ss').innerHTML = sampleSheetText;
let [ss] = document.styleSheets;
assert_throws_dom('IndexSizeError', () => { ss.cssRules[0].insertRule('& .broken {}', 3); });
assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after no-insert');
});
test(() => {
document.getElementById('ss').innerHTML = sampleSheetText;
let [ss] = document.styleSheets;
assert_throws_dom('IndexSizeError', () => { ss.cssRules[0].insertRule('& .broken {}', -1); });
assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after no-insert');
});
test(() => {
document.getElementById('ss').innerHTML = sampleSheetText;
let [ss] = document.styleSheets;
assert_throws_dom('IndexSizeError', () => { ss.cssRules[0].deleteRule(5); });
assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after no-delete');
});
test(() => {
document.getElementById('ss').innerHTML = sampleSheetText;
let [ss] = document.styleSheets;
assert_equals(ss.cssRules[0].cssRules[2], undefined, 'subscript out-of-bounds returns undefined');
assert_equals(ss.cssRules[0].cssRules.item(2), null, 'item() out-of-bounds returns null');
assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after no-access');
});
// Test that inserting an invalid rule throws an exception.
test(() => {
document.getElementById('ss').innerHTML = sampleSheetText;
let [ss] = document.styleSheets;
let exception;
assert_throws_dom('SyntaxError', () => { ss.cssRules[0].insertRule('% {}'); });
assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after invalid rule');
});
// Test that we can get out single rule through .cssRules.
test(() => {
document.getElementById('ss').innerHTML = sampleSheetText;
let [ss] = document.styleSheets;
assert_equals(ss.cssRules[0].cssRules[1].cssText, '& .c { color: blue; }');
});
// Test that we can insert a @supports rule, that it serializes in the right place
// and has the right parent. Note that the indentation is broken per-spec.
test(() => {
document.getElementById('ss').innerHTML = sampleSheetText;
let [ss] = document.styleSheets;
ss.cssRules[0].insertRule('@supports selector(&) { & div { font-size: 10px; }}', 1);
assert_equals(ss.cssRules[0].cssText,
`.a {
color: red;
& .b { color: green; }
@supports selector(&) {
& div { font-size: 10px; }
}
& .c { color: blue; }
}`, '@supports is added');
assert_equals(ss.cssRules[0].cssRules[1].parentRule, ss.cssRules[0]);
ss.cssRules[0].deleteRule(1);
assert_equals(ss.cssRules[0].cssText, sampleSheetText);
});
// Nested rules are not part of declaration lists, and thus should not
// be possible to insert with .style.
test(() => {
document.getElementById('ss').innerHTML = sampleSheetText;
let [ss] = document.styleSheets;
ss.cssRules[0].style = 'color: olivedrab; &.d { color: peru; }';
assert_equals(ss.cssRules[0].cssText,
`.a {
color: olivedrab;
& .b { color: green; }
& .c { color: blue; }
}`, 'color is changed, new rule is ignored');
});
</script>
|
