https://www.esic.edu/modules/contrib/select2/js/select2.js?tlv0u9

1/**
2 * @file
3 * Select2 integration.
4 */
5(function ($, drupalSettings, Sortable, once) {
6  'use strict';
7
8  Drupal.behaviors.select2 = {
9    attach: function (context) {
10      $(once('select2-init', '.select2-widget', context)).each(function () {
11        var config = $(this).data('select2-config');
12        config.createTag = function (params) {
13          var term = $.trim(params.term);
14          if (term === '') {
15            return null;
16          }
17          return {
18            id: '$ID:' + term,
19            text: term
20          };
21        };
22        config.templateSelection = function (option, container) {
23          // The placeholder doesn't have value.
24          if ('element' in option && 'value' in option.element) {
25            // Add option value to selection container for sorting.
26            $(container).data('optionValue', option.element.value);
27          }
28          return option.text;
29        };
30        if (Object.prototype.hasOwnProperty.call(config, 'ajax')) {
31          config.ajax.data = function (params) {
32            var selected = [];
33            if (Array.isArray($(this).val())) {
34              selected = $(this).val();
35            }
36            else if ($(this).val() !== '') {
37              selected = [$(this).val()];
38            }
39            return $.extend({}, params, {
40              q: params.term,
41              selected: selected.filter(function (selected) {
42                return !selected.startsWith('$ID:');
43              })
44            });
45          };
46        }
47        $(this).data('select2-config', config);
48
49        // Emit an event, that other modules have the chance to modify the
50        // select2 settings. Make sure that other JavaScript code that rely on
51        // this event will be loaded first.
52        // @see: modules/select2_publish/select2_publish.libraries.yml
53        $(this).trigger('select2-init');
54        config = $(this).data('select2-config');
55
56        // If config has a dropdownParent property, wrap it a jQuery object.
57        if (Object.prototype.hasOwnProperty.call(config, 'dropdownParent')) {
58          config.dropdownParent = $(config.dropdownParent);
59        }
60        $(this).select2(config);
61
62        // Copied from https://github.com/woocommerce/woocommerce/blob/master/assets/js/admin/wc-enhanced-select.js#L118
63        if (config.multiple) {
64          var $select = $(this);
65          var $list = $select.next('.select2-container').find('ul.select2-selection__rendered');
66          Sortable.create($list[0], {
67            draggable: 'li:not(.select2-search)',
68            forceFallback: true,
69            onEnd: function () {
70              $($list.find('.select2-selection__choice').get().reverse()).each(function () {
71                $select.prepend($select.find('option[value="' + $(this).data('optionValue') + '"]').first());
72              });
73            }
74          });
75        }
76      });
77    }
78  };
79
80})(jQuery, drupalSettings, Sortable, once);