/**
* Tom Select v2.2.2
* Licensed under the Apache License, Version 2.0 (the "License");
*/

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.optgroup_columns = factory());
})(this, (function () { 'use strict';

  const KEY_LEFT = 37;
  const KEY_RIGHT = 39;
  typeof navigator === 'undefined' ? false : /Mac/.test(navigator.userAgent);
   // ctrl key or apple key for ma

  /*! @orchidjs/unicode-variants | https://github.com/orchidjs/unicode-variants | Apache License (v2) */
  const accent_pat = '[\u0300-\u036F\u{b7}\u{2be}\u{2bc}]';
  /** @type {TUnicodeMap} */

  const latin_convert = {};
  /** @type {TUnicodeMap} */

  const latin_condensed = {
    '/': '⁄∕',
    '0': '߀',
    "a": "ⱥɐɑ",
    "aa": "ꜳ",
    "ae": "æǽǣ",
    "ao": "ꜵ",
    "au": "ꜷ",
    "av": "ꜹꜻ",
    "ay": "ꜽ",
    "b": "ƀɓƃ",
    "c": "ꜿƈȼↄ",
    "d": "đɗɖᴅƌꮷԁɦ",
    "e": "ɛǝᴇɇ",
    "f": "ꝼƒ",
    "g": "ǥɠꞡᵹꝿɢ",
    "h": "ħⱨⱶɥ",
    "i": "ɨı",
    "j": "ɉȷ",
    "k": "ƙⱪꝁꝃꝅꞣ",
    "l": "łƚɫⱡꝉꝇꞁɭ",
    "m": "ɱɯϻ",
    "n": "ꞥƞɲꞑᴎлԉ",
    "o": "øǿɔɵꝋꝍᴑ",
    "oe": "œ",
    "oi": "ƣ",
    "oo": "ꝏ",
    "ou": "ȣ",
    "p": "ƥᵽꝑꝓꝕρ",
    "q": "ꝗꝙɋ",
    "r": "ɍɽꝛꞧꞃ",
    "s": "ßȿꞩꞅʂ",
    "t": "ŧƭʈⱦꞇ",
    "th": "þ",
    "tz": "ꜩ",
    "u": "ʉ",
    "v": "ʋꝟʌ",
    "vy": "ꝡ",
    "w": "ⱳ",
    "y": "ƴɏỿ",
    "z": "ƶȥɀⱬꝣ",
    "hv": "ƕ"
  };

  for (let latin in latin_condensed) {
    let unicode = latin_condensed[latin] || '';

    for (let i = 0; i < unicode.length; i++) {
      let char = unicode.substring(i, i + 1);
      latin_convert[char] = latin;
    }
  }

  new RegExp(Object.keys(latin_convert).join('|') + '|' + accent_pat, 'gu');

  /**
   * Get the closest node to the evt.target matching the selector
   * Stops at wrapper
   *
   */

  const parentMatch = (target, selector, wrapper) => {
    if (wrapper && !wrapper.contains(target)) {
      return;
    }

    while (target && target.matches) {
      if (target.matches(selector)) {
        return target;
      }

      target = target.parentNode;
    }
  };
  /**
   * Get the index of an element amongst sibling nodes of the same type
   *
   */

  const nodeIndex = (el, amongst) => {
    if (!el) return -1;
    amongst = amongst || el.nodeName;
    var i = 0;

    while (el = el.previousElementSibling) {
      if (el.matches(amongst)) {
        i++;
      }
    }

    return i;
  };

  /**
   * Plugin: "optgroup_columns" (Tom Select.js)
   * Copyright (c) contributors
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
   * file except in compliance with the License. You may obtain a copy of the License at:
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under
   * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
   * ANY KIND, either express or implied. See the License for the specific language
   * governing permissions and limitations under the License.
   *
   */
  function plugin () {
    var self = this;
    var orig_keydown = self.onKeyDown;
    self.hook('instead', 'onKeyDown', evt => {
      var index, option, options, optgroup;

      if (!self.isOpen || !(evt.keyCode === KEY_LEFT || evt.keyCode === KEY_RIGHT)) {
        return orig_keydown.call(self, evt);
      }

      self.ignoreHover = true;
      optgroup = parentMatch(self.activeOption, '[data-group]');
      index = nodeIndex(self.activeOption, '[data-selectable]');

      if (!optgroup) {
        return;
      }

      if (evt.keyCode === KEY_LEFT) {
        optgroup = optgroup.previousSibling;
      } else {
        optgroup = optgroup.nextSibling;
      }

      if (!optgroup) {
        return;
      }

      options = optgroup.querySelectorAll('[data-selectable]');
      option = options[Math.min(options.length - 1, index)];

      if (option) {
        self.setActiveOption(option);
      }
    });
  }

  return plugin;

}));
//# sourceMappingURL=optgroup_columns.js.map