/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/* import-globals-from ../../mochitest/states.js */
loadScripts(
{ name:
"role.js", dir: MOCHITESTS_DIR },
{ name:
"states.js", dir: MOCHITESTS_DIR }
);
addAccessibleTask(
`<div role=
"group"><input id=
"textbox" value=
"hello"/></div>`,
async
function (browser, iframeDocAcc, contentDocAcc) {
const textbox = findAccessibleChildByID(iframeDocAcc,
"textbox");
const iframe = findAccessibleChildByID(contentDocAcc,
"default-iframe-id");
const iframeDoc = findAccessibleChildByID(
contentDocAcc,
"default-iframe-body-id"
);
const root = getRootAccessible(document);
testStates(textbox, STATE_FOCUSABLE,
0, STATE_FOCUSED);
let onFocus = waitForEvent(EVENT_FOCUS, textbox);
textbox.takeFocus();
await onFocus;
testStates(textbox, STATE_FOCUSABLE | STATE_FOCUSED,
0);
is(
getAccessibleDOMNodeID(contentDocAcc.focusedChild),
"textbox",
"correct focusedChild from top doc"
);
is(
getAccessibleDOMNodeID(iframeDocAcc.focusedChild),
"textbox",
"correct focusedChild from iframe"
);
is(
getAccessibleDOMNodeID(root.focusedChild),
"textbox",
"correct focusedChild from root"
);
ok(!iframe.focusedChild,
"correct focusedChild from iframe (null)");
onFocus = waitForEvent(EVENT_FOCUS, iframeDoc);
iframeDoc.takeFocus();
await onFocus;
is(
getAccessibleDOMNodeID(contentDocAcc.focusedChild),
"default-iframe-body-id",
"correct focusedChild of child doc from top doc"
);
is(
getAccessibleDOMNodeID(iframe.focusedChild),
"default-iframe-body-id",
"correct focusedChild of child doc from iframe"
);
is(
getAccessibleDOMNodeID(root.focusedChild),
"default-iframe-body-id",
"correct focusedChild of child doc from root"
);
},
{ topLevel:
false, iframe:
true, remoteIframe:
true }
);
function focusURLBar() {
info(
"Focusing the URL bar");
// XXX: See bug 2016839
const focused = waitForEvent(
EVENT_FOCUS,
event => event.accessible.role == ROLE_EDITCOMBOBOX
);
gURLBar.focus();
return focused;
}
// Retry takeFocus if the expected focus event doesn't arrive in time.
// This handles intermittent races when moving focus between chrome UI
// and remote content.
async
function takeFocusWithRetry(acc, retries =
5, timeoutMs =
3000) {
for (let i =
0; i < retries; i++) {
const focused = waitForEvent(EVENT_FOCUS, acc);
acc.takeFocus();
let timeoutId;
let resolveTimeout;
const timeout =
new Promise(r => {
resolveTimeout = r;
// eslint-disable-next-line mozilla/no-arbitrary-setTimeout
timeoutId = setTimeout(() => r(
"timeout"), timeoutMs);
});
const result = await Promise.race([focused, timeout]);
if (result !==
"timeout") {
// In the ideal case, we'll recieve a focus event here before the
// timeout comes back. When that happens, we should resolve the timeout
// so the Promise can release both the timeout and the captured focus event.
// Without this, browser shutdown can happen before the timeout timer fires (particularly
// in --verify mode). This causes the reference to the focus event to leak
// because the race wrapper is still active.
// Leaking the focus event also leaks its associated window :(
clearTimeout(timeoutId);
resolveTimeout();
return;
}
info(`takeFocus attempt ${i +
1} timed out, retrying...`);
}
ok(
false,
"Failed to receive focus event after multiple retries");
}
/**
* Test takeFocus on web content when focus is in the browser UI.
*/
addAccessibleTask(
`
<button id=
"outerButton">outerButton</button>
<iframe src=
"data:text/html,<body id='innerDoc'><button id='innerButton'>innerButton</button>"></iframe>
`,
async
function testFocusContentWhileUiFocused(browser, docAcc) {
await focusURLBar();
info(
"Focusing docAcc");
await takeFocusWithRetry(docAcc);
await focusURLBar();
info(
"Focusing outerButton");
const outerButton = findAccessibleChildByID(docAcc,
"outerButton");
await takeFocusWithRetry(outerButton);
await focusURLBar();
info(
"Focusing innerButton");
const innerButton = findAccessibleChildByID(docAcc,
"innerButton");
await takeFocusWithRetry(innerButton);
await focusURLBar();
info(
"Focusing outerButton");
await takeFocusWithRetry(outerButton);
},
{ chrome:
true, topLevel:
true, iframe:
true, remoteIframe:
true }
);
