forked from mirrors/gecko-dev
b3dfdb20c6
Differential Revision: https://phabricator.services.mozilla.com/D58219 --HG-- extra : moz-landing-system : lando
55 lines
1.7 KiB
JavaScript
55 lines
1.7 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/ */
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"use strict";
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/**
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* Force focus to an element that isn't focusable.
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* Toolbar buttons aren't focusable because if they were, clicking them would
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* focus them, which is undesirable. Therefore, they're only made focusable
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* when a user is navigating with the keyboard. This function forces focus as
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* is done during toolbar keyboard navigation.
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*/
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function forceFocus(aElem) {
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aElem.setAttribute("tabindex", "-1");
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aElem.focus();
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aElem.removeAttribute("tabindex");
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}
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async function expectFocusAfterKey(
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aKey,
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aFocus,
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aAncestorOk = false,
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aWindow = window
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) {
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let res = aKey.match(/^(Shift\+)?(?:(.)|(.+))$/);
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let shift = Boolean(res[1]);
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let key;
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if (res[2]) {
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key = res[2]; // Character.
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} else {
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key = "KEY_" + res[3]; // Tab, ArrowRight, etc.
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}
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let expected;
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let friendlyExpected;
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if (typeof aFocus == "string") {
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expected = aWindow.document.getElementById(aFocus);
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friendlyExpected = aFocus;
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} else {
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expected = aFocus;
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if (aFocus == aWindow.gURLBar.inputField) {
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friendlyExpected = "URL bar input";
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} else if (aFocus == aWindow.gBrowser.selectedBrowser) {
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friendlyExpected = "Web document";
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}
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}
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info("Listening on item " + (expected.id || expected.className));
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let focused = BrowserTestUtils.waitForEvent(expected, "focus", aAncestorOk);
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EventUtils.synthesizeKey(key, { shiftKey: shift }, aWindow);
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let receivedEvent = await focused;
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info(
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"Got focus on item: " +
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(receivedEvent.target.id || receivedEvent.target.className)
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);
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ok(true, friendlyExpected + " focused after " + aKey + " pressed");
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}
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