drupal/core/misc/collapse.js

/**
* DO NOT EDIT THIS FILE.
* See the following change record for more information,
* https://www.drupal.org/node/2815083
* @preserve
**/

(function ($, Modernizr, Drupal) {
  function CollapsibleDetails(node) {
    this.$node = $(node);
    this.$node.data('details', this);
    var anchor = window.location.hash && window.location.hash !== '#' ? ", ".concat(window.location.hash) : '';

    if (this.$node.find(".error".concat(anchor)).length) {
      this.$node.attr('open', true);
    }

    this.setupSummaryPolyfill();
  }

  $.extend(CollapsibleDetails, {
    instances: []
  });
  $.extend(CollapsibleDetails.prototype, {
    setupSummaryPolyfill: function setupSummaryPolyfill() {
      var $summary = this.$node.find('> summary');
      $summary.attr('tabindex', '-1');
      $('<span class="details-summary-prefix visually-hidden"></span>').append(this.$node.attr('open') ? Drupal.t('Hide') : Drupal.t('Show')).prependTo($summary).after(document.createTextNode(' '));
      $('<a class="details-title"></a>').attr('href', "#".concat(this.$node.attr('id'))).prepend($summary.contents()).appendTo($summary);
      $summary.append(this.$summary).on('click', $.proxy(this.onSummaryClick, this));
    },
    onSummaryClick: function onSummaryClick(e) {
      this.toggle();
      e.preventDefault();
    },
    toggle: function toggle() {
      var _this = this;

      var isOpen = !!this.$node.attr('open');
      var $summaryPrefix = this.$node.find('> summary span.details-summary-prefix');

      if (isOpen) {
        $summaryPrefix.html(Drupal.t('Show'));
      } else {
        $summaryPrefix.html(Drupal.t('Hide'));
      }

      setTimeout(function () {
        _this.$node.attr('open', !isOpen);
      }, 0);
    }
  });
  Drupal.behaviors.collapse = {
    attach: function attach(context) {
      if (Modernizr.details) {
        return;
      }

      once('collapse', 'details', context).forEach(function (detail) {
        detail.classList.add('collapse-processed');
        CollapsibleDetails.instances.push(new CollapsibleDetails(detail));
      });
    }
  };

  var handleFragmentLinkClickOrHashChange = function handleFragmentLinkClickOrHashChange(e, $target) {
    $target.parents('details').not('[open]').find('> summary').trigger('click');
  };

  $('body').on('formFragmentLinkClickOrHashChange.details', handleFragmentLinkClickOrHashChange);
  Drupal.CollapsibleDetails = CollapsibleDetails;
})(jQuery, Modernizr, Drupal);