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<!DOCTYPE html>
<title>View transitions: pageswap navigationactivation for traverse navigations</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/">
<link rel="author" href="mailto:khushalsagar@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/common.js"></script>
<style></style>
<script>
const channel = new BroadcastChannel("testchannel");
const params = new URLSearchParams(location.search);
const is_initial_page_first_navigation = params.has('popup') && navigation.entries().length == 1;
const is_new_page = params.has('new');
const is_test_page = !params.has('popup') && !params.has('new');
function enableViewTransition() {
document.styleSheets[0].insertRule(`
@view-transition {
navigation: auto;
}
`);
}
if (is_new_page)
enableViewTransition();
// The test page which opens a popup for the navigation sequence.
if (is_test_page) {
const expectedUrl = location.href.split('?')[0] + "?popup";
const expectedEvents = ["pageswap", "transition", expectedUrl, "traverse","from", "pagehide"];
promise_test(async t => {
let popup;
onload = () => {
window.events = [];
popup = window.open("?popup");
t.add_cleanup(() => popup.close());
};
await new Promise(resolve => {
channel.addEventListener(
"message", t.step_func(async (e) => {
if (e.data === "nav") {
assert_array_equals(window.events, expectedEvents, 'incorrect event order');
popup.close();
resolve();
}
}));
});
}, `pageswap on traverse navigation from script`);
} else if (is_initial_page_first_navigation) {
// The popup page which the user navigates back to.
onload = async () => {
await disableBFCache();
requestAnimationFrame(() => requestAnimationFrame(() => {
location.href = location.href.split('?')[0] + '?new';
}));
};
onpageshow = (e) => {
assert_false(e.persisted, 'the test should run without BFCache');
}
} else if (is_new_page) {
onload = () => {
requestAnimationFrame(() => requestAnimationFrame(() => {
navigation.back();
}));
};
onpageswap = (e) => {
window.opener.events.push("pageswap");
if (e.viewTransition != null)
window.opener.events.push("transition");
window.opener.events.push(e.activation.entry.url);
window.opener.events.push(e.activation.navigationType);
if (e.activation.from == navigation.currentEntry)
window.opener.events.push("from");
};
onpagehide = () => {
window.opener.events.push("pagehide");
channel.postMessage("nav");
};
}
</script>
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