<!doctype html>
<title>Text directive in cross-origin iframe doesn't cause scrolling in main document</title>
<meta charset=utf-8>
<link rel="help" href="https://wicg.github.io/ScrollToTextFragment/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/common/utils.js"></script>
<script src="stash.js"></script>
<style>
iframe {
width: 300px;
height: 300px;
/* Make sure iframe is mostly offscreen but intersects viewport slightly so
* it isn't throttled in any way */
margin-top: 95vh;
}
</style>
<iframe></iframe>
<script>
let iframe_did_scroll = false;
window.addEventListener('message', (e) => {
if (e.data != 'did_scroll')
throw new Error("Got unexpected message: " + e.data);
if (iframe_did_scroll)
throw new Error("Got multiple messages from single iframe");
iframe_did_scroll = true;
});
async function wait_for_iframe_scroll(t) {
await t.step_wait(() => iframe_did_scroll == true, "iframe scrolled to text directive", 10000);
iframe_did_scroll = false;
}
async function rAF() {
return new Promise((resolve) => {
window.requestAnimationFrame(resolve);
});
}
onload = () => {
promise_test(async function (t) {
window.scrollTo(0, 0);
frames[0].location = "http://{{hosts[][www]}}:{{ports[http][0]}}/scroll-to-text-fragment/resources/self-text-directive-iframe.html";
await wait_for_iframe_scroll(t);
await rAF();
assert_equals(document.scrollingElement.scrollTop, 0);
}, "CROSS-ORIGIN: Text directive in iframe doesn't bubble to outer frame.");
promise_test(async function (t) {
window.scrollTo(0, 0);
frames[0].location = "resources/self-text-directive-iframe.html";
await wait_for_iframe_scroll(t);
await rAF();
assert_greater_than(document.scrollingElement.scrollTop, 0);
}, "SAME-ORIGIN: Text directive in iframe bubbles to outer frame.");
}
</script>
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