https://www.tfmetalsreport.com/sites/all/modules/contrib/facetapi/facetapi.js?tm5sho

1(function ($) {
2  'use strict';
3
4  Drupal.behaviors.facetapi = {
5    attach: function(context, settings) {
6      // Iterates over facet settings, applies functionality like the "Show more"
7      // links for block realm facets.
8      // @todo We need some sort of JS API so we don't have to make decisions
9      // based on the realm.
10      if (settings.facetapi) {
11        for (var index in settings.facetapi.facets) {
12          if (null != settings.facetapi.facets[index].makeCheckboxes) {
13            Drupal.facetapi.makeCheckboxes(settings.facetapi.facets[index].id);
14          }
15          if (null != settings.facetapi.facets[index].limit) {
16            // Applies soft limit to the list.
17            Drupal.facetapi.applyLimit(settings.facetapi.facets[index]);
18          }
19        }
20      }
21    }
22  };
23
24  /**
25   * Class containing functionality for Facet API.
26   */
27  Drupal.facetapi = {};
28
29  /**
30   * Applies the soft limit to facets in the block realm.
31   */
32  Drupal.facetapi.applyLimit = function(settings) {
33    let ul = $('ul#' + settings.id);
34    if (settings.limit > 0 && !ul.hasClass('facetapi-processed')) {
35      // Only process this code once per page load.
36      ul.addClass('facetapi-processed');
37
38      // Ensures our limit is zero-based, hides facets over the limit.
39      let limit = settings.limit - 1;
40      ul.find('li:gt(' + limit + ')').hide();
41
42      // Adds "Show more" / "Show fewer" links as appropriate.
43      ul.filter(function() {
44        return $(this).find('li').length > settings.limit;
45      }).each(function() {
46        $('<a href="#" class="facetapi-limit-link"></a>').text(settings.showMoreText).click(function() {
47          if ($(this).hasClass('open')) {
48            $(this).siblings().find('li:gt(' + limit + ')').slideUp();
49            $(this).removeClass('open').text(settings.showMoreText);
50          }
51          else {
52            $(this).siblings().find('li:gt(' + limit + ')').slideDown();
53            $(this).addClass('open').text(Drupal.t(settings.showFewerText));
54          }
55          return false;
56        }).insertAfter($(this));
57      });
58    }
59  };
60
61  /**
62   * Constructor for the facetapi redirect class.
63   */
64  Drupal.facetapi.Redirect = function(href) {
65    this.href = href;
66  };
67
68  /**
69   * Method to redirect to the stored href.
70   */
71  Drupal.facetapi.Redirect.prototype.gotoHref = function() {
72    window.location.href = this.href;
73  };
74
75  /**
76   * Turns all facet links into checkboxes.
77   * Ensures the facet is disabled if a link is clicked.
78   */
79  Drupal.facetapi.makeCheckboxes = function(facet_id) {
80    let $facet = $('#' + facet_id),
81        $items = $('a.facetapi-checkbox, span.facetapi-checkbox', $facet);
82
83    // Find all checkbox facet links and give them a checkbox.
84    $items.once('facetapi-makeCheckbox').each(Drupal.facetapi.makeCheckbox);
85    $items.once('facetapi-disableClick').click(function (e) {
86      Drupal.facetapi.disableFacet($facet);
87    });
88  };
89
90  /**
91   * Disable all facet links and checkboxes in the facet and apply a 'disabled'
92   * class.
93   */
94  Drupal.facetapi.disableFacet = function ($facet) {
95    let $elem = $(this);
96    // Apply only for links.
97    if ($elem[0].tagName === 'A') {
98      $facet.addClass('facetapi-disabled');
99      $('a.facetapi-checkbox').click(Drupal.facetapi.preventDefault);
100      $('input.facetapi-checkbox', $facet).attr('disabled', true);
101    }
102  };
103
104  /**
105   * Event listener for easy prevention of event propagation.
106   */
107  Drupal.facetapi.preventDefault = function (e) {
108    e.preventDefault();
109  };
110
111  /**
112   * Replace an unclick link with a checked checkbox.
113   */
114  Drupal.facetapi.makeCheckbox = function() {
115    let $elem = $(this),
116        active = $elem.hasClass('facetapi-active');
117
118    if (!active && !$elem.hasClass('facetapi-inactive')) {
119      // Not a facet element.
120      return;
121    }
122
123    // Derive an ID and label for the checkbox based on the associated link.
124    // The label is required for accessibility, but it duplicates information
125    // in the link itself, so it should only be shown to screen reader users.
126    let id = this.id + '--checkbox',
127        description = $elem.find('.element-invisible').html(),
128        label = $('<label class="element-invisible" for="' + id + '">' + description + '</label>');
129
130    // Link for elements with count 0.
131    if ($elem[0].tagName === 'A') {
132      var checkbox = $('<input type="checkbox" class="facetapi-checkbox" id="' + id + '" />'),
133        // Get the href of the link that is this DOM object.
134        href = $elem.attr('href'),
135        redirect = new Drupal.facetapi.Redirect(href);
136    }
137    // Link for elements with count more than 0.
138    else {
139      checkbox = $('<input disabled type="checkbox" class="facetapi-checkbox" id="' + id + '" />');
140    }
141
142    checkbox.click(function (e) {
143      Drupal.facetapi.disableFacet($elem.parents('ul.facetapi-facetapi-checkbox-links'));
144      redirect.gotoHref();
145    });
146
147    if (active) {
148      checkbox.prop('checked', true);
149      // Add the checkbox and label, hide the link.
150      $elem.before(label).before(checkbox).hide();
151    }
152    else {
153      $elem.before(label).before(checkbox);
154    }
155  };
156
157})(jQuery);