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<!DOCTYPE html>
<title>Document#exitFullscreen() for nested fullscreen inside an iframe</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../trusted-click.js"></script>
<iframe allowfullscreen></iframe>
<script>
window.t = async_test();
t.step(() => {
const iframe = document.querySelector("iframe");
iframe.srcdoc = "<div><div></div></div>";
iframe.onload = t.step_func(() => {
const doc = iframe.contentDocument;
const outer = doc.querySelector("div");
const inner = outer.firstChild;
// First request fullscreen for the outer element.
trusted_request(t, outer);
doc.onfullscreenchange = t.step_func(() => {
assert_equals(document.fullscreenElement, iframe);
assert_equals(doc.fullscreenElement, outer);
// Then request fullscreen for the inner element.
trusted_request(t, inner);
doc.onfullscreenchange = t.step_func(() => {
assert_equals(document.fullscreenElement, iframe);
assert_equals(doc.fullscreenElement, inner);
// Now exit fullscreen for the iframe's content document.
doc.exitFullscreen();
doc.onfullscreenchange = t.step_func_done(() => {
assert_equals(document.fullscreenElement, iframe);
assert_equals(doc.fullscreenElement, outer);
});
});
});
doc.onfullscreenerror = t.unreached_func("fullscreenerror event");
});
});
</script>
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