jquery.keycodes.js

// Catches specified key events and calls the provided function
// when they occur.  Can use text or key codes, passed in as a
// space-separated string.
define([
  'jquery' /* jQuery, $ */,
  'jquery.instructure_date_and_time' /* datepicker */
], function($) {

$.fn.keycodes = function(options, fn) {
  /* Based loosely on Tzury Bar Yochay's js-hotkeys:
  (c) Copyrights 2007 - 2008

  Original idea by by Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/

  jQuery Plugin by Tzury Bar Yochay
  tzury.by@gmail.com
  http://evalinux.wordpress.com
  http://facebook.com/profile.php?id=513676303

  Project's sites:
  http://code.google.com/p/js-hotkeys/
  http://github.com/tzuryby/hotkeys/tree/master

  License: same as jQuery license. */
  var specialKeys = { 27: 'esc', 9: 'tab', 32:'space', 13: 'return', 8:'backspace', 145: 'scroll',
      20: 'capslock', 144: 'numlock', 19:'pause', 45:'insert', 36:'home', 46:'del',
      35:'end', 33: 'pageup', 34:'pagedown', 37:'left', 38:'up', 39:'right',40:'down',
      112:'f1',113:'f2', 114:'f3', 115:'f4', 116:'f5', 117:'f6', 118:'f7', 119:'f8',
      120:'f9', 121:'f10', 122:'f11', 123:'f12', 191:'/' };
  if ($.browser.mozilla){
      specialKeys = $.extend(specialKeys, { 96: '0', 97:'1', 98: '2', 99:
          '3', 100: '4', 101: '5', 102: '6', 103: '7', 104: '8', 105: '9',
          0: '191' /* with shift, 191 becomes 0 #5200 */ });
  }
  if(typeof(options) == "string") {
    options = {keyCodes: options};
  }
  if(this.filter(":input,object,embed").length > 0) {
    options.ignore = "";
  }
  var options = $.extend({}, $.fn.keycodes.defaults, options);

  var keyCodes = [];
  var originalCodes = [];
  var codes = options.keyCodes.split(" ");
  $.each(codes, function(i, code) {
    originalCodes.push(code);
    code = code.split("+").sort().join("+").toLowerCase();
    keyCodes.push(code);
  });
  this.bind('keydown', function(event, originalEvent) {
    event = (originalEvent && originalEvent.keyCode) ? originalEvent : event;
    if(options.ignore && $(event.target).is(options.ignore)) { return; }
    var code = [];
    if(event.shiftKey) { code.push("Shift"); }
    if(event.ctrlKey) { code.push("Ctrl"); }
    if(event.metaKey) { code.push("Meta"); }
    if(event.altKey) { code.push("Alt"); }
    var key = specialKeys[event.keyCode];
    key = key || String.fromCharCode(event.keyCode);
    code.push(key);
    code = code.sort().join("+").toLowerCase();
    event.keyMatches = function(checkCode) {
      checkCode = checkCode.split("+").sort().join("+").toLowerCase();
      return checkCode == code;
    };
    var idx = $.inArray(code, keyCodes);
    var picker = $(document).data('last_datepicker');
    if(picker && picker[0] == this && event.keyCode == 27) {
      event.preventDefault();
      return false;
    }

    if(idx != -1) {
      event.keyString = originalCodes[idx];
      fn.call(this, event);
    }
  });
  return this;
};
$.fn.keycodes.defaults = {ignore: ":input,object,embed", keyCodes: ""};

});