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// Tests scheduler context propagation when a blur is caused by a task in one
// context and observed in another, within the same task (depending on origin
// and site isolation).
function runFocusChangeTest(t, crossOrigin) {
window.onload = () => {
const iframe = document.createElement('iframe');
let src = location.href.slice(0, location.href.lastIndexOf('/'))
+ '/resources/focus-change-test-subframe.html';
if (crossOrigin) {
src = src.replace('://', '://www1.')
}
iframe.src = src;
iframe.onload = () => {
// TAB to focus the first input.
test_driver.send_keys(document.body, "\ue004");
// TAB again to focus the iframe's input.
test_driver.send_keys(document.body, "\ue004");
}
document.body.appendChild(iframe);
}
let count = 0;
window.onmessage = t.step_func((e) => {
if (e.data.status === 'focus') {
++count;
// The scheduling state is set when running the scheduler.postTask() and
// propagated to continuations descending from the callback.
if (count == 1) {
scheduler.postTask(() => { input.focus(); }, {priority: 'background'});
} else {
assert_equals(count, 2);
scheduler.postTask(async () => {
await Promise.resolve();
input.focus();
}, {priority: 'background'});
}
} else {
assert_equals(e.data.status, 'done');
// If the default priority task runs before the background priority
// continuation, then the scheduling state was used for the continuation.
const expectedToRun = !crossOrigin;
assert_equals(expectedToRun, e.data.didRun);
if (count == 1) {
test_driver.send_keys(document.body, "\ue004");
} else {
assert_equals(count, 2);
t.done();
}
}
});
}