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<!DOCTYPE html>
<meta charset="utf-8" />
<title>CSSOM - CSSFontFeatureValuesRule interface</title>
<link
rel="help"
href="https://drafts.csswg.org/css-fonts-4/#om-fontfeaturevalues"
/>
<link rel="author" title="Dominik Röttsches" href="drott@chromium.org" />
<meta
name="assert"
content="CSSFontFeatureValuesRule interface is accessible and supports read and write access."
/>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style></style>
<body></body>
<script>
let rule_initial = `
@font-feature-values test_family {
@annotation {
the_first: 6;
}
@styleset {
yo: 7;
del: 4;
di: 10 9 4 5;
}
}
`;
let rule_added = `
@font-feature-values second_family {
@annotation {
yabab: 2;
yogog: 4;
bidib: 5;
}
}
`;
let rule_overlap = `
@font-feature-values test_family {
@annotation {
baric: 17;
}
@ornaments {
fooic: 1;
}
}
`;
function resetStateAndTest(testFunction) {
var sheet = document.styleSheets[0];
while (sheet.cssRules.length > 0) sheet.deleteRule(0);
sheet.insertRule(rule_initial);
testFunction();
}
test(function () {
resetStateAndTest(() => {
let rule = document.styleSheets[0].cssRules[0];
assert_equals(rule.type, 14);
assert_equals(rule.annotation.size, 1);
assert_equals(rule.styleset.size, 3);
assert_array_equals(rule.styleset.get("yo"), [7]);
assert_array_equals(rule.styleset.get("del"), [4]);
assert_array_equals(rule.styleset.get("di"), [10, 9, 4, 5]);
assert_array_equals(rule.annotation.get("the_first"), [6]);
assert_equals(rule.stylistic.size, 0);
assert_equals(rule.swash.size, 0);
assert_equals(rule.ornaments.size, 0);
assert_equals(rule.characterVariant.size, 0);
assert_equals(rule.fontFamily, "test_family");
});
}, "CSSFontFeatureValuesRule is correctly parsed and accessible via CSSOM.");
test(function () {
resetStateAndTest(() => {
let family_override = "test_changed_family";
let rule = document.styleSheets[0].cssRules[0];
rule.fontFamily = family_override;
let read_rule = document.styleSheets[0].cssRules[0];
assert_equals(read_rule.fontFamily, family_override);
});
}, "CSSFontFeatureValuesRule family is settable and readable.");
test(function () {
resetStateAndTest(() => {
let rule = document.styleSheets[0].cssRules[0];
let override_number = 43;
assert_equals(rule.styleset.get("di").length, 4);
rule.styleset.set("di", override_number);
assert_array_equals(
document.styleSheets[0].cssRules[0].styleset.get("di"),
[override_number]
);
assert_equals(rule.styleset.size, 3);
assert_equals(
document.styleSheets[0].cssRules[0].styleset.get("di").length,
1
);
});
}, "CSSFontFeatureValuesMap entries are settable to single values.");
test(function () {
resetStateAndTest(() => {
let rule = document.styleSheets[0].cssRules[0];
let override_sequence = [43, 22];
assert_equals(
document.styleSheets[0].cssRules[0].styleset.get("di").length,
4
);
rule.styleset.set("di", override_sequence);
assert_array_equals(
document.styleSheets[0].cssRules[0].styleset.get("di"),
override_sequence
);
assert_equals(document.styleSheets[0].cssRules[0].styleset.size, 3);
assert_equals(
document.styleSheets[0].cssRules[0].styleset.get("di").length,
2
);
});
}, "CSSFontFeatureValuesMap entries are settable to sequences of numbers.");
test(function () {
resetStateAndTest(() => {
document.styleSheets[0].insertRule(rule_added, 1);
assert_equals(document.styleSheets[0].cssRules[1].type, 14);
assert_equals(document.styleSheets[0].cssRules[1].annotation.size, 3);
});
}, "New rules can be added.");
test(function () {
resetStateAndTest(() => {
document.styleSheets[0].insertRule(rule_added, 1);
assert_equals(document.styleSheets[0].cssRules[1].annotation.size, 3);
document.styleSheets[0].cssRules[1].annotation.delete("yogog");
assert_equals(document.styleSheets[0].cssRules[1].annotation.size, 2);
});
}, "Deleting single entries is possible.");
test(function () {
resetStateAndTest(() => {
document.styleSheets[0].insertRule(rule_added, 1);
assert_equals(document.styleSheets[0].cssRules[1].annotation.size, 3);
document.styleSheets[0].cssRules[1].annotation.clear();
assert_equals(document.styleSheets[0].cssRules[1].annotation.size, 0);
});
}, "Clearing all entries is possible.");
test(function () {
resetStateAndTest(() => {
assert_equals(document.styleSheets[0].cssRules.length, 1);
document.styleSheets[0].insertRule(rule_overlap, 1);
assert_equals(document.styleSheets[0].cssRules.length, 2);
// Force updating internal state.
getComputedStyle(document.body).borderTop;
assert_equals(
document.styleSheets[0].cssRules[0].annotation.size,
1,
"1 annotation."
);
assert_equals(
document.styleSheets[0].cssRules[0].styleset.size,
3,
"3 entries in styleset."
);
assert_equals(
document.styleSheets[0].cssRules[0].ornaments.size,
0,
"No ornament entries."
);
assert_false(
document.styleSheets[0].cssRules[0].annotation.has("baric"),
"Annotation must not contain 'baric'."
);
assert_false(
document.styleSheets[0].cssRules[0].ornaments.has("fooic"),
"Ornaments must not contain 'fooic'."
);
assert_equals(document.styleSheets[0].cssRules[1].annotation.size, 1);
assert_equals(document.styleSheets[0].cssRules[1].ornaments.size, 1);
assert_false(
document.styleSheets[0].cssRules[1].annotation.has("the_first")
);
});
}, "Multiple rules for the same family are kept separate in CSSOM.");
</script>
|
