The Tor Browser / file revision

 /* 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";

 module.metadata = {

   "stability": "unstable"

 };

 const { emit } = require("../events");

 const { getCodeForKey, toJSON } = require("../../keyboard/utils");

 const { has } = require("../../util/array");

 const { isString } = require("../../lang/type");

 const INITIALIZER = "initKeyEvent";

 const CATEGORY = "KeyboardEvent";

 function Options(options) {

   if (!isString(options))

     return options;

   var { key, modifiers } = toJSON(options);

   return {

     key: key,

     control: has(modifiers, "control"),

     alt: has(modifiers, "alt"),

     shift: has(modifiers, "shift"),

     meta: has(modifiers, "meta")

   };

 }

 var keyEvent = exports.keyEvent = function keyEvent(element, type, options) {

   emit(element, type, {

     initializer: INITIALIZER,

     category: CATEGORY,

     settings: [

       !("bubbles" in options) || options.bubbles !== false,

       !("cancelable" in options) || options.cancelable !== false,

       "window" in options && options.window ? options.window : null,

       "control" in options && !!options.control,

       "alt" in options && !!options.alt,

       "shift" in options && !!options.shift,

       "meta" in options && !!options.meta,

       getCodeForKey(options.key) || 0,

       options.key.length === 1 ? options.key.charCodeAt(0) : 0

     ]

   });

 }

 exports.keyDown = function keyDown(element, options) {

   keyEvent(element, "keydown", Options(options));

 };

 exports.keyUp = function keyUp(element, options) {

   keyEvent(element, "keyup", Options(options));

 };

 exports.keyPress = function keyPress(element, options) {

   keyEvent(element, "keypress", Options(options));

 };