taxonomy.js

(function ($) {

"use strict";

/**
 * Move a block in the blocks table from one region to another via select list.
 *
 * This behavior is dependent on the tableDrag behavior, since it uses the
 * objects initialized in that behavior to update the row.
 */
Drupal.behaviors.termDrag = {
  attach: function (context, settings) {
    var backStep = settings.taxonomy.backStep;
    var forwardStep = settings.taxonomy.forwardStep;
    var tableDrag = Drupal.tableDrag.taxonomy; // Get the blocks tableDrag object.
    var $table = $('#taxonomy');
    var rows = $table.find('tr').length;

    // When a row is swapped, keep previous and next page classes set.
    tableDrag.row.prototype.onSwap = function (swappedRow) {
      $table.find('tr.taxonomy-term-preview').removeClass('taxonomy-term-preview');
      $table.find('tr.taxonomy-term-divider-top').removeClass('taxonomy-term-divider-top');
      $table.find('tr.taxonomy-term-divider-bottom').removeClass('taxonomy-term-divider-bottom');

      var tableBody = $table[0].tBodies[0];
      if (backStep) {
        for (var n = 0; n < backStep; n++) {
          $(tableBody.rows[n]).addClass('taxonomy-term-preview');
        }
        $(tableBody.rows[backStep - 1]).addClass('taxonomy-term-divider-top');
        $(tableBody.rows[backStep]).addClass('taxonomy-term-divider-bottom');
      }

      if (forwardStep) {
        for (var k = rows - forwardStep - 1; k < rows - 1; k++) {
          $(tableBody.rows[k]).addClass('taxonomy-term-preview');
        }
        $(tableBody.rows[rows - forwardStep - 2]).addClass('taxonomy-term-divider-top');
        $(tableBody.rows[rows - forwardStep - 1]).addClass('taxonomy-term-divider-bottom');
      }
    };
  }
};

})(jQuery);