<!doctype html>
<meta charset=utf-8>
<title>Test focus event after iframe gets focus</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
function waitForMessage(target, checkFn) {
  return new Promise(resolve => {
    target.addEventListener("message", e => {
      if (checkFn && !checkFn(e)) {
        return;
      }
      resolve();
    }, { once: true });
  });
}

function start(w) {
  w.postMessage("start", "*");
}

// 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 waitForMessage(window, (e) => {
    log = e.data;
    return true;
  });
  return log;
}

function runSingleTest(url, focusIframeFunction, expectedResult, description) {
  promise_test(async t => {
    let w = window.open(url);
    t.add_cleanup(() => { w.close(); });
    await waitForMessage(window, e => e.data === "ready");
    start(w);
    focusIframeFunction(w);
    assert_equals(await getLog(w), expectedResult);
  }, description);
}

function runTests(url, description) {
  // Test calling iframe.focus();
  runSingleTest(url, (w) => {
    w.postMessage("iframefocus", "*");
  }, "outerlog:windowblur,innerlog:windowfocus,",
  description + " via calling iframe.focus()");

  // Test calling iframe.contentWindow.focus();
  runSingleTest(url, (w) => {
    w.postMessage("iframecontentWindowfocus", "*");
  }, "outerlog:windowblur,innerlog:windowfocus,",
  description + " via calling iframe.contentWindow.focus()");

  // Test calling window.focus() in iframe;
  runSingleTest(url, (w) => {
    w.postMessage("windowfocus", "*");
  }, "outerlog:windowblur,innerlog:willfocuswindow,windowfocus,didfocuswindow,",
  description + " via calling window.focus() in iframe");
}

// Test same site iframe
runTests("support/iframe-focus-event-after-same-site-iframe-gets-focus-outer.html",
         "Check iframe focus event after same site iframe gets focus");

// Test different site iframe
runTests("support/iframe-focus-event-after-different-site-iframe-gets-focus-outer.sub.html",
         "Check iframe focus event after different site iframe gets focus");
</script>
