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<!doctype html>
<meta charset=utf-8>
<title>activeElement when focusing different-site iframe then immediately focusing back</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
function waitForEvent(target, event, checkFn) {
return new Promise(resolve => {
target.addEventListener(event, e => {
if (checkFn && !checkFn(e)) {
return;
}
resolve();
}, { once: true });
});
}
// This will send message to outer frame and also inner frame to ask them
// send the log they collect back, the logs of outer and inner will be
// concatenated.
async function getLog(w) {
let log = "";
step_timeout(function() {
w.postMessage("getlog", "*");
}, 0);
await waitForEvent(window, "message", (e) => {
log = e.data;
return true;
});
return log;
}
// This will send message to outer frame to ask it's activeElement.
async function getActiveElement(w) {
let activeElement = "";
step_timeout(function() {
w.postMessage("getActiveElement", "*");
}, 0);
await waitForEvent(window, "message", (e) => {
activeElement = e.data;
return true;
});
return activeElement;
}
promise_test(async t => {
let w = window.open("support/activeelement-after-focusing-different-site-iframe-then-immediately-focusing-back-outer.sub.html");
t.add_cleanup(() => { w.close(); });
await waitForEvent(window, "message", e => e.data === "ready");
w.postMessage("focus", "*");
assert_equals(await getLog(w), 'outerlog:willfocusiframe,didfocusiframe,willfocusinput,inputfocus,didfocusinput,innerlog:windowfocus,windowblur,');
assert_equals(await getActiveElement(w), 'INPUT');
}, "Check focus event and active element after focusing different site iframe then immediately focusing back");
</script>
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