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function-shadow-animations.html
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<!DOCTYPE html>
<title>Custom Functions: ShadowDOM (animations)</title>
<link rel="help" href="https://drafts.csswg.org/css-mixins-1/#using-custom-functions">
<link rel="help" href="https://drafts.csswg.org/css-scoping-1/#css-tree-scoped-reference">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/utils.js"></script>
<style>
@property --length {
syntax: "<length>";
inherits: false;
initial-value: 0px;
}
@function --from() { result: 1000px; }
@function --to() { result: 2000px; }
</style>
<div id=can_animate_standard_property_in_shadow>
<template shadowrootmode=open>
<style>
@keyframes --anim {
from { width: --from(); }
to { width: --to(); }
}
@function --from() { result: 0px; }
@function --to() { result: 100px; }
div {
animation: --anim 1000s linear paused forwards;
}
#t00 { animation-delay: 0s; }
#t04 { animation-delay: -400s; }
#t05 { animation-delay: -500s; }
#t06 { animation-delay: -600s; }
#t10 { animation-delay: -1000s; }
</style>
<div id=t00></div>
<div id=t04></div>
<div id=t05></div>
<div id=t06></div>
<div id=t10></div>
</template>
</div>
<script>
test(() => {
let sr = can_animate_standard_property_in_shadow.shadowRoot;
let gCS = (id) => getComputedStyle(sr.querySelector(id))
assert_equals(gCS('#t00').width, '0px');
assert_equals(gCS('#t04').width, '40px');
assert_equals(gCS('#t05').width, '50px');
assert_equals(gCS('#t06').width, '60px');
assert_equals(gCS('#t10').width, '100px');
}, 'Can animate standard property in shadow');
</script>
<div id=can_animate_typed_custom_property_in_shadow>
<template shadowrootmode=open>
<style>
@keyframes --anim {
from { --length: --from(); }
to { --length: --to(); }
}
@function --from() { result: 0px; }
@function --to() { result: 100px; }
div {
animation: --anim 1000s linear paused forwards;
}
#t00 { animation-delay: 0s; }
#t04 { animation-delay: -400s; }
#t05 { animation-delay: -500s; }
#t06 { animation-delay: -600s; }
#t10 { animation-delay: -1000s; }
</style>
<div id=t00></div>
<div id=t04></div>
<div id=t05></div>
<div id=t06></div>
<div id=t10></div>
</template>
</div>
<script>
test(() => {
let sr = can_animate_typed_custom_property_in_shadow.shadowRoot;
let gCS = (id) => getComputedStyle(sr.querySelector(id))
assert_equals(gCS('#t00').getPropertyValue('--length'), '0px');
assert_equals(gCS('#t04').getPropertyValue('--length'), '40px');
assert_equals(gCS('#t05').getPropertyValue('--length'), '50px');
assert_equals(gCS('#t06').getPropertyValue('--length'), '60px');
assert_equals(gCS('#t10').getPropertyValue('--length'), '100px');
}, 'Can animate typed custom property in shadow');
</script>
<div id=can_animate_untyped_custom_property_in_shadow>
<template shadowrootmode=open>
<style>
@keyframes --anim {
from { --untyped: --from(); }
to { --untyped: --to(); }
}
@function --from() { result: 0px; }
@function --to() { result: 100px; }
div {
animation: --anim 1000s linear paused forwards;
}
#t00 { animation-delay: 0s; }
#t04 { animation-delay: -400s; }
#t05 { animation-delay: -500s; }
#t06 { animation-delay: -600s; }
#t10 { animation-delay: -1000s; }
</style>
<div id=t00></div>
<div id=t04></div>
<div id=t05></div>
<div id=t06></div>
<div id=t10></div>
</template>
</div>
<script>
test(() => {
let sr = can_animate_untyped_custom_property_in_shadow.shadowRoot;
let gCS = (id) => getComputedStyle(sr.querySelector(id))
assert_equals(gCS('#t00').getPropertyValue('--untyped'), '0px');
assert_equals(gCS('#t04').getPropertyValue('--untyped'), '0px');
assert_equals(gCS('#t05').getPropertyValue('--untyped'), '100px');
assert_equals(gCS('#t06').getPropertyValue('--untyped'), '100px');
assert_equals(gCS('#t10').getPropertyValue('--untyped'), '100px');
}, 'Can animate untyped custom property in shadow');
</script>