browser_test_menu_key_equivalent_update.js

Enable keyboard shortcuts

/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// When Gecko leaves a key unhandled, nsCocoaWindow::PostHandleKeyEvent offers

// it to the menu bar, which matches it against the key equivalents cached on

// the native menu items. Those have to follow changes to the <key> element the

// item was built from.

const KEY_ID = "key_fullZoomReduce";

const MENUITEM_ID = "menu_zoomReduce";

const ATTRS = ["data-l10n-id", "key", "keycode", "modifiers"];

function keyEquivalent() {

  return window.windowUtils.getNativeMenuItemKeyEquivalent(MENUITEM_ID);

add_task(async function test_key_equivalent_follows_key_element() {

  const keyEl = document.getElementById(KEY_ID);

  const saved = new Map();

  for (const attr of ATTRS) {

    if (keyEl.hasAttribute(attr)) {

      saved.set(attr, keyEl.getAttribute(attr));

  registerCleanupFunction(() => {

    for (const attr of ATTRS) {

      keyEl.removeAttribute(attr);

    for (const [attr, value] of saved) {

      keyEl.setAttribute(attr, value);

});

  // Without this the assertions below would also pass on an item that never

  // had a key equivalent to begin with.

  is(keyEquivalent(), "command|-", "starts out carrying accel+-");

  for (const attr of ATTRS) {

    keyEl.removeAttribute(attr);

  is(keyEquivalent(), "", "clearing the <key> clears the native equivalent");

  keyEl.setAttribute("key", "-");

  keyEl.setAttribute("modifiers", "accel,shift");

is(

    keyEquivalent(),

    "shift,command|-",

    "reassigning the <key> updates the native equivalent"

);

});