/**
 * @file better_exposed_filters.js
 *
 * Provides some client-side functionality for the Better Exposed Filters module
 */
(function ($, Drupal, drupalSettings) {
  Drupal.behaviors.betterExposedFilters = {
    attach: function(context, settings) {
      // Add highlight class to checked checkboxes for better theming
      $('.bef-tree input[type=checkbox], .bef-checkboxes input[type=checkbox]')
        // Highlight newly selected checkboxes
        .change(function() {
          _bef_highlight(this, context);
        })
        .filter(':checked').closest('.form-item', context).addClass('highlight')
      ;
    }
  };

  /*
   * Helper functions
   */

  /**
   * Adds/Removes the highlight class from the form-item div as appropriate
   */
  function _bef_highlight(elem, context) {
    $elem = $(elem, context);
    $elem.attr('checked')
      ? $elem.closest('.form-item', context).addClass('highlight')
      : $elem.closest('.form-item', context).removeClass('highlight');
  }

}) (jQuery, Drupal, drupalSettings);