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<!DOCTYPE html>
<html>
<head>
<script src="/common/rendering-utils.js"></script>
<style>
@view-transition { navigation: auto; }
.hidden {
width: 10px;
height: 10px;
view-transition-name: hidden;
background: green;
}
html::view-transition-group(hidden) { animation-duration: 300s; }
html::view-transition-image-pair(hidden) { opacity: 0; }
html::view-transition-old(root) {
width: 50vw;
height: 100vh;
position: fixed;
left: 0px;
top: 0px;
opacity: 1;
animation: unset;
}
html::view-transition-new(root) {
width: 50vw;
height: 100vh;
position: fixed;
left: 50vw;
top: 0px;
opacity: 1;
animation: unset;
}
</style>
<script>
onload = () => {
window.parent.postMessage("loaded", '*');
}
const params = new URLSearchParams(location.search);
if (params.has("blue"))
document.documentElement.style.background = "blue";
else if (params.has("grey"))
document.documentElement.style.background = "grey";
onpagereveal = async (e) => {
if (e.viewTransition != null) {
await e.viewTransition.ready;
window.parent.postMessage("transition", '*');
}
}
window.addEventListener(
"message", async (e) => {
if (e.data === "checkrendering") {
await waitForAtLeastOneFrame();
await waitForAtLeastOneFrame();
window.parent.postMessage("rendered", '*');
}
}
);
</script>
</head>
<div class="hidden"></div>
</html>
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