overleaf/services/web/public/js/ace/lib/keys.js

/*! @license
==========================================================================
SproutCore -- JavaScript Application Framework
copyright 2006-2009, Sprout Systems Inc., Apple Inc. and contributors.

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
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and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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DEALINGS IN THE SOFTWARE.

SproutCore and the SproutCore logo are trademarks of Sprout Systems, Inc.

For more information about SproutCore, visit http://www.sproutcore.com


==========================================================================
@license */

// Most of the following code is taken from SproutCore with a few changes.

define(function(require, exports, module) {
"use strict";

var oop = require("./oop");

/*
 * Helper functions and hashes for key handling.
 */
var Keys = (function() {
    var ret = {
        MODIFIER_KEYS: {
            16: 'Shift', 17: 'Ctrl', 18: 'Alt', 224: 'Meta'
        },

        KEY_MODS: {
            "ctrl": 1, "alt": 2, "option" : 2,
            "shift": 4, "meta": 8, "command": 8, "cmd": 8
        },

        FUNCTION_KEYS : {
            8  : "Backspace",
            9  : "Tab",
            13 : "Return",
            19 : "Pause",
            27 : "Esc",
            32 : "Space",
            33 : "PageUp",
            34 : "PageDown",
            35 : "End",
            36 : "Home",
            37 : "Left",
            38 : "Up",
            39 : "Right",
            40 : "Down",
            44 : "Print",
            45 : "Insert",
            46 : "Delete",
            96 : "Numpad0",
            97 : "Numpad1",
            98 : "Numpad2",
            99 : "Numpad3",
            100: "Numpad4",
            101: "Numpad5",
            102: "Numpad6",
            103: "Numpad7",
            104: "Numpad8",
            105: "Numpad9",
            '-13': "NumpadEnter",
            112: "F1",
            113: "F2",
            114: "F3",
            115: "F4",
            116: "F5",
            117: "F6",
            118: "F7",
            119: "F8",
            120: "F9",
            121: "F10",
            122: "F11",
            123: "F12",
            144: "Numlock",
            145: "Scrolllock"
        },

        PRINTABLE_KEYS: {
           32: ' ',  48: '0',  49: '1',  50: '2',  51: '3',  52: '4', 53:  '5',
           54: '6',  55: '7',  56: '8',  57: '9',  59: ';',  61: '=', 65:  'a',
           66: 'b',  67: 'c',  68: 'd',  69: 'e',  70: 'f',  71: 'g', 72:  'h',
           73: 'i',  74: 'j',  75: 'k',  76: 'l',  77: 'm',  78: 'n', 79:  'o',
           80: 'p',  81: 'q',  82: 'r',  83: 's',  84: 't',  85: 'u', 86:  'v',
           87: 'w',  88: 'x',  89: 'y',  90: 'z', 107: '+', 109: '-', 110: '.',
          188: ',', 190: '.', 191: '/', 192: '`', 219: '[', 220: '\\',
          221: ']', 222: '\''
        }
    };

    // A reverse map of FUNCTION_KEYS
    for (var i in ret.FUNCTION_KEYS) {
        var name = ret.FUNCTION_KEYS[i].toLowerCase();
        ret[name] = parseInt(i, 10);
    }

    // Add the MODIFIER_KEYS, FUNCTION_KEYS and PRINTABLE_KEYS to the KEY
    // variables as well.
    oop.mixin(ret, ret.MODIFIER_KEYS);
    oop.mixin(ret, ret.PRINTABLE_KEYS);
    oop.mixin(ret, ret.FUNCTION_KEYS);

    // aliases
    ret.enter = ret["return"];
    ret.escape = ret.esc;
    ret.del = ret["delete"];
    
    // workaround for firefox bug
    ret[173] = '-';

    return ret;
})();
oop.mixin(exports, Keys);

exports.keyCodeToString = function(keyCode) {
    return (Keys[keyCode] || String.fromCharCode(keyCode)).toLowerCase();
}

});