iframe-contentwindow-focus-with-same-as-top-intermediate-frame-middle.sub.html

<!doctype html>
<meta charset="utf-8">
<title>iframe.contentWindow.focus() with same-as-top intermediate frame middle</title>
<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-inner.html"></iframe>
<script>
let iframe = document.getElementsByTagName("iframe")[0];
let log = "";
function getLog() {
    return log;
}
window.onmessage = function(e) {
    log += e.data;
    if (e.data == "starttest;") {
        log += "middleactivelement:" + document.activeElement.localName + ";";
        log += "callfocus;";
        iframe.contentWindow.focus();
        log += "middleactivelement:" + document.activeElement.localName + ";";
        parent.opener.step_timeout(function() {
            log += "middletimer;middleactivelement:" + document.activeElement.localName + ";";
            parent.postMessage(getLog(), "*");
        }, 1500);
    }
};
/*
 * TODO: Get browsers to agree on this one.
 *
 * Does not fire in Firefox without Fission
 * https://bugzilla.mozilla.org/show_bug.cgi?id=1675484
 *
 * Fires in Blink in the iframe.focus() case but not in
 * the iframe.contentWindow.focus() case.
 */
// iframe.onfocus = function() {
//     log += "middlefocus;";
// }

</script>

chromium/third_party/blink/web_tests/external/wpt/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-middle.sub.html