40 lines
1.3 KiB
HTML
40 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<html class="reftest-wait">
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<title>CSS Positioned Layout Module Test: 'overlay' rendering on top after transition finished</title>
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<link rel="help" href="https://drafts.csswg.org/css-position-4/#overlay">
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<link rel="help" href="https://html.spec.whatwg.org/multipage/popover.html">
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<link rel="match" href="green-ref.html">
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<script src="/common/reftest-wait.js"></script>
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<style>
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#transition-in, #red {
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/* Force display:block both popover open or closed to not rely on
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@starting-style or display transitions. */
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display: block;
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border: none;
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width: 100vw;
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height: 100vh;
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}
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#red {
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position: fixed;
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background-color: red;
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}
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#transition-in {
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transition: overlay 0.1s step-end;
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transition-behavior: allow-discrete;
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background-color: green;
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}
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</style>
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<div id="transition-in" popover></div>
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<div id="red"></div>
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<script>
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let transition_in = document.querySelector("#transition-in");
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transition_in.addEventListener("transitionend", () => takeScreenshot());
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// Force style update to have before-change style for overlay transition.
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transition_in.offsetTop;
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transition_in.showPopover();
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if (getComputedStyle(transition_in).overlay != "none") {
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// Transition didn't start, force a fail condition.
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transition_in.style.backgroundColor = "pink";
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takeScreenshot();
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}
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</script>
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