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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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44
layout/reftests/css-animations/stacking-context-transform-removing-important-in-delay.html Normal file
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<!DOCTYPE html>
<html class="reftest-wait">
<title>
Removing !important rule during delay phase of animation creates
a stack context for correct style
</title>
<style>
span {
height: 100px;
width: 100px;
position: fixed;
background: green;
top: 50px;
}
@keyframes Transform100px {
from, to { transform: translate(100px) }
}
#test {
width: 100px; height: 100px;
background: blue;
animation: Transform100px 100s 100s;
}
</style>
<span></span>
<div id="test"></div>
<script>
window.addEventListener("load", () => {
var target = document.getElementById("test");
target.style.setProperty("transform", "translateX(200px)", "important");
requestAnimationFrame(() => {
// Now the target transform style should be translateX(200px) because of
// !important rule.
// Apply transform:none without important directive.
target.style.setProperty("transform", "none", "");
requestAnimationFrame(() => {
// The CSS animation is no longer overridden but it's still in delay
// phase, so we should create a stacking context for transform:none style.
document.documentElement.classList.remove("reftest-wait");
});
});
});
</script>