/*! DataTables 2.0.1
 * © SpryMedia Ltd - datatables.net/license
 */

/**
 * @summary     DataTables
 * @description Paginate, search and order HTML tables
 * @version     2.0.1
 * @author      SpryMedia Ltd
 * @contact     www.datatables.net
 * @copyright   SpryMedia Ltd.
 *
 * This source file is free software, available under the following license:
 *   MIT license - https://datatables.net/license
 *
 * This source file is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the license files for details.
 *
 * For details please refer to: https://www.datatables.net
 */

(function (factory) {
  "use strict";

  if (typeof define === "function" && define.amd) {
    // AMD
    define(["jquery"], function ($) {
      return factory($, window, document);
    });
  } else if (typeof exports === "object") {
    // CommonJS
    // jQuery's factory checks for a global window - if it isn't present then it
    // returns a factory function that expects the window object
    var jq = require_once("jquery");

    if (typeof window === "undefined") {
      module.exports = function (root, $) {
        if (!root) {
          // CommonJS environments without a window global must pass a
          // root. This will give an error otherwise
          root = window;
        }

        if (!$) {
          $ = jq(root);
        }

        return factory($, root, root.document);
      };
    } else {
      module.exports = factory(jq, window, window.document);
    }
  } else {
    // Browser
    window.DataTable = factory(jQuery, window, document);
  }
})(function ($, window, document) {
  "use strict";

  var DataTable = function (selector, options) {
    // Check if called with a window or jQuery object for DOM less applications
    // This is for backwards compatibility
    if (DataTable.factory(selector, options)) {
      return DataTable;
    }

    // When creating with `new`, create a new DataTable, returning the API instance
    if (this instanceof DataTable) {
      return $(selector).DataTable(options);
    } else {
      // Argument switching
      options = selector;
    }

    var _that = this;
    var emptyInit = options === undefined;
    var len = this.length;

    if (emptyInit) {
      options = {};
    }

    // Method to get DT API instance from jQuery object
    this.api = function () {
      return new _Api(this);
    };

    this.each(function () {
      // For each initialisation we want to give it a clean initialisation
      // object that can be bashed around
      var o = {};
      var oInit =
        len > 1 // optimisation for single table case
          ? _fnExtend(o, options, true)
          : options;

      var i = 0,
        iLen;
      var sId = this.getAttribute("id");
      var bInitHandedOff = false;
      var defaults = DataTable.defaults;
      var $this = $(this);

      /* Sanity check */
      if (this.nodeName.toLowerCase() != "table") {
        _fnLog(null, 0, "Non-table node initialisation (" + this.nodeName + ")", 2);
        return;
      }

      $(this).trigger("options.dt", oInit);

      /* Backwards compatibility for the defaults */
      _fnCompatOpts(defaults);
      _fnCompatCols(defaults.column);

      /* Convert the camel-case defaults to Hungarian */
      _fnCamelToHungarian(defaults, defaults, true);
      _fnCamelToHungarian(defaults.column, defaults.column, true);

      /* Setting up the initialisation object */
      _fnCamelToHungarian(defaults, $.extend(oInit, $this.data()), true);

      /* Check to see if we are re-initialising a table */
      var allSettings = DataTable.settings;
      for (i = 0, iLen = allSettings.length; i < iLen; i++) {
        var s = allSettings[i];

        /* Base check on table node */
        if (s.nTable == this || (s.nTHead && s.nTHead.parentNode == this) || (s.nTFoot && s.nTFoot.parentNode == this)) {
          var bRetrieve = oInit.bRetrieve !== undefined ? oInit.bRetrieve : defaults.bRetrieve;
          var bDestroy = oInit.bDestroy !== undefined ? oInit.bDestroy : defaults.bDestroy;

          if (emptyInit || bRetrieve) {
            return s.oInstance;
          } else if (bDestroy) {
            new DataTable.Api(s).destroy();
            break;
          } else {
            _fnLog(s, 0, "Cannot reinitialise DataTable", 3);
            return;
          }
        }

        /* If the element we are initialising has the same ID as a table which was previously
         * initialised, but the table nodes don't match (from before) then we destroy the old
         * instance by simply deleting it. This is under the assumption that the table has been
         * destroyed by other methods. Anyone using non-id selectors will need to do this manually
         */
        if (s.sTableId == this.id) {
          allSettings.splice(i, 1);
          break;
        }
      }

      /* Ensure the table has an ID - required for accessibility */
      if (sId === null || sId === "") {
        sId = "DataTables_Table_" + DataTable.ext._unique++;
        this.id = sId;
      }

      /* Create the settings object for this table and set some of the default parameters */
      var oSettings = $.extend(true, {}, DataTable.models.oSettings, {
        sDestroyWidth: $this[0].style.width,
        sInstance: sId,
        sTableId: sId,
        colgroup: $("<colgroup>").prependTo(this),
        fastData: function (row, column, type) {
          return _fnGetCellData(oSettings, row, column, type);
        },
      });
      oSettings.nTable = this;
      oSettings.oInit = oInit;

      allSettings.push(oSettings);

      // Make a single API instance available for internal handling
      oSettings.api = new _Api(oSettings);

      // Need to add the instance after the instance after the settings object has been added
      // to the settings array, so we can self reference the table instance if more than one
      oSettings.oInstance = _that.length === 1 ? _that : $this.dataTable();

      // Backwards compatibility, before we apply all the defaults
      _fnCompatOpts(oInit);

      // If the length menu is given, but the init display length is not, use the length menu
      if (oInit.aLengthMenu && !oInit.iDisplayLength) {
        oInit.iDisplayLength = Array.isArray(oInit.aLengthMenu[0]) ? oInit.aLengthMenu[0][0] : $.isPlainObject(oInit.aLengthMenu[0]) ? oInit.aLengthMenu[0].value : oInit.aLengthMenu[0];
      }

      // Apply the defaults and init options to make a single init object will all
      // options defined from defaults and instance options.
      oInit = _fnExtend($.extend(true, {}, defaults), oInit);

      // Map the initialisation options onto the settings object
      _fnMap(oSettings.oFeatures, oInit, ["bPaginate", "bLengthChange", "bFilter", "bSort", "bSortMulti", "bInfo", "bProcessing", "bAutoWidth", "bSortClasses", "bServerSide", "bDeferRender"]);
      _fnMap(oSettings, oInit, [
        "ajax",
        "fnFormatNumber",
        "sServerMethod",
        "aaSorting",
        "aaSortingFixed",
        "aLengthMenu",
        "sPaginationType",
        "iStateDuration",
        "bSortCellsTop",
        "iTabIndex",
        "sDom",
        "fnStateLoadCallback",
        "fnStateSaveCallback",
        "renderer",
        "searchDelay",
        "rowId",
        "caption",
        "layout",
        ["iCookieDuration", "iStateDuration"], // backwards compat
        ["oSearch", "oPreviousSearch"],
        ["aoSearchCols", "aoPreSearchCols"],
        ["iDisplayLength", "_iDisplayLength"],
      ]);
      _fnMap(oSettings.oScroll, oInit, [
        ["sScrollX", "sX"],
        ["sScrollXInner", "sXInner"],
        ["sScrollY", "sY"],
        ["bScrollCollapse", "bCollapse"],
      ]);
      _fnMap(oSettings.oLanguage, oInit, "fnInfoCallback");

      /* Callback functions which are array driven */
      _fnCallbackReg(oSettings, "aoDrawCallback", oInit.fnDrawCallback);
      _fnCallbackReg(oSettings, "aoStateSaveParams", oInit.fnStateSaveParams);
      _fnCallbackReg(oSettings, "aoStateLoadParams", oInit.fnStateLoadParams);
      _fnCallbackReg(oSettings, "aoStateLoaded", oInit.fnStateLoaded);
      _fnCallbackReg(oSettings, "aoRowCallback", oInit.fnRowCallback);
      _fnCallbackReg(oSettings, "aoRowCreatedCallback", oInit.fnCreatedRow);
      _fnCallbackReg(oSettings, "aoHeaderCallback", oInit.fnHeaderCallback);
      _fnCallbackReg(oSettings, "aoFooterCallback", oInit.fnFooterCallback);
      _fnCallbackReg(oSettings, "aoInitComplete", oInit.fnInitComplete);
      _fnCallbackReg(oSettings, "aoPreDrawCallback", oInit.fnPreDrawCallback);

      oSettings.rowIdFn = _fnGetObjectDataFn(oInit.rowId);

      /* Browser support detection */
      _fnBrowserDetect(oSettings);

      var oClasses = oSettings.oClasses;

      $.extend(oClasses, DataTable.ext.classes, oInit.oClasses);
      $this.addClass(oClasses.table);

      if (!oSettings.oFeatures.bPaginate) {
        oInit.iDisplayStart = 0;
      }

      if (oSettings.iInitDisplayStart === undefined) {
        /* Display start point, taking into account the save saving */
        oSettings.iInitDisplayStart = oInit.iDisplayStart;
        oSettings._iDisplayStart = oInit.iDisplayStart;
      }

      /* Language definitions */
      var oLanguage = oSettings.oLanguage;
      $.extend(true, oLanguage, oInit.oLanguage);

      if (oLanguage.sUrl) {
        /* Get the language definitions from a file - because this Ajax call makes the language
         * get async to the remainder of this function we use bInitHandedOff to indicate that
         * _fnInitialise will be fired by the returned Ajax handler, rather than the constructor
         */
        $.ajax({
          dataType: "json",
          url: oLanguage.sUrl,
          success: function (json) {
            _fnCamelToHungarian(defaults.oLanguage, json);
            $.extend(true, oLanguage, json, oSettings.oInit.oLanguage);

            _fnCallbackFire(oSettings, null, "i18n", [oSettings]);
            _fnInitialise(oSettings);
          },
          error: function () {
            // Error occurred loading language file
            _fnLog(oSettings, 0, "i18n file loading error", 21);

            // continue on as best we can
            _fnInitialise(oSettings);
          },
        });
        bInitHandedOff = true;
      } else {
        _fnCallbackFire(oSettings, null, "i18n", [oSettings]);
      }

      /*
       * Columns
       * See if we should load columns automatically or use defined ones
       */
      var columnsInit = [];
      var thead = this.getElementsByTagName("thead");
      var initHeaderLayout = _fnDetectHeader(oSettings, thead[0]);

      // If we don't have a columns array, then generate one with nulls
      if (oInit.aoColumns) {
        columnsInit = oInit.aoColumns;
      } else if (initHeaderLayout.length) {
        for (i = 0, iLen = initHeaderLayout[0].length; i < iLen; i++) {
          columnsInit.push(null);
        }
      }

      // Add the columns
      for (i = 0, iLen = columnsInit.length; i < iLen; i++) {
        _fnAddColumn(oSettings);
      }

      // Apply the column definitions
      _fnApplyColumnDefs(oSettings, oInit.aoColumnDefs, columnsInit, initHeaderLayout, function (iCol, oDef) {
        _fnColumnOptions(oSettings, iCol, oDef);
      });

      /* HTML5 attribute detection - build an mData object automatically if the
       * attributes are found
       */
      var rowOne = $this.children("tbody").find("tr").eq(0);

      if (rowOne.length) {
        var a = function (cell, name) {
          return cell.getAttribute("data-" + name) !== null ? name : null;
        };

        $(rowOne[0])
          .children("th, td")
          .each(function (i, cell) {
            var col = oSettings.aoColumns[i];

            if (!col) {
              _fnLog(oSettings, 0, "Incorrect column count", 18);
            }

            if (col.mData === i) {
              var sort = a(cell, "sort") || a(cell, "order");
              var filter = a(cell, "filter") || a(cell, "search");

              if (sort !== null || filter !== null) {
                col.mData = {
                  _: i + ".display",
                  sort: sort !== null ? i + ".@data-" + sort : undefined,
                  type: sort !== null ? i + ".@data-" + sort : undefined,
                  filter: filter !== null ? i + ".@data-" + filter : undefined,
                };
                col._isArrayHost = true;

                _fnColumnOptions(oSettings, i);
              }
            }
          });
      }

      var features = oSettings.oFeatures;
      var loadedInit = function () {
        /*
         * Sorting
         * @todo For modularisation (1.11) this needs to do into a sort start up handler
         */

        // If aaSorting is not defined, then we use the first indicator in asSorting
        // in case that has been altered, so the default sort reflects that option
        if (oInit.aaSorting === undefined) {
          var sorting = oSettings.aaSorting;
          for (i = 0, iLen = sorting.length; i < iLen; i++) {
            sorting[i][1] = oSettings.aoColumns[i].asSorting[0];
          }
        }

        /* Do a first pass on the sorting classes (allows any size changes to be taken into
         * account, and also will apply sorting disabled classes if disabled
         */
        _fnSortingClasses(oSettings);

        _fnCallbackReg(oSettings, "aoDrawCallback", function () {
          if (oSettings.bSorted || _fnDataSource(oSettings) === "ssp" || features.bDeferRender) {
            _fnSortingClasses(oSettings);
          }
        });

        /*
         * Final init
         * Cache the header, body and footer as required, creating them if needed
         */
        var caption = $this.children("caption");

        if (oSettings.caption) {
          if (caption.length === 0) {
            caption = $("<caption/>").appendTo($this);
          }

          caption.html(oSettings.caption);
        }

        // Store the caption side, so we can remove the element from the document
        // when creating the element
        if (caption.length) {
          caption[0]._captionSide = caption.css("caption-side");
          oSettings.captionNode = caption[0];
        }

        if (thead.length === 0) {
          thead = $("<thead/>").appendTo($this);
        }
        oSettings.nTHead = thead[0];
        $("tr", thead).addClass(oClasses.thead.row);

        var tbody = $this.children("tbody");
        if (tbody.length === 0) {
          tbody = $("<tbody/>").insertAfter(thead);
        }
        oSettings.nTBody = tbody[0];

        var tfoot = $this.children("tfoot");
        if (tfoot.length === 0) {
          // If we are a scrolling table, and no footer has been given, then we need to create
          // a tfoot element for the caption element to be appended to
          tfoot = $("<tfoot/>").appendTo($this);
        }
        oSettings.nTFoot = tfoot[0];
        $("tr", tfoot).addClass(oClasses.tfoot.row);

        // Check if there is data passing into the constructor
        if (oInit.aaData) {
          for (i = 0; i < oInit.aaData.length; i++) {
            _fnAddData(oSettings, oInit.aaData[i]);
          }
        } else if (_fnDataSource(oSettings) == "dom") {
          // Grab the data from the page
          _fnAddTr(oSettings, $(oSettings.nTBody).children("tr"));
        }

        /* Copy the data index array */
        oSettings.aiDisplay = oSettings.aiDisplayMaster.slice();

        /* Initialisation complete - table can be drawn */
        oSettings.bInitialised = true;

        /* Check if we need to initialise the table (it might not have been handed off to the
         * language processor)
         */
        if (bInitHandedOff === false) {
          _fnInitialise(oSettings);
        }
      };

      /* Must be done after everything which can be overridden by the state saving! */
      _fnCallbackReg(oSettings, "aoDrawCallback", _fnSaveState);

      if (oInit.bStateSave) {
        features.bStateSave = true;
        _fnLoadState(oSettings, oInit, loadedInit);
      } else {
        loadedInit();
      }
    });
    _that = null;
    return this;
  };

  /**
   * DataTables extensions
   *
   * This namespace acts as a collection area for plug-ins that can be used to
   * extend DataTables capabilities. Indeed many of the build in methods
   * use this method to provide their own capabilities (sorting methods for
   * example).
   *
   * Note that this namespace is aliased to `jQuery.fn.dataTableExt` for legacy
   * reasons
   *
   *  @namespace
   */
  DataTable.ext = _ext = {
    /**
     * Buttons. For use with the Buttons extension for DataTables. This is
     * defined here so other extensions can define buttons regardless of load
     * order. It is _not_ used by DataTables core.
     *
     *  @type object
     *  @default {}
     */
    buttons: {},

    /**
     * Element class names
     *
     *  @type object
     *  @default {}
     */
    classes: {},

    /**
     * DataTables build type (expanded by the download builder)
     *
     *  @type string
     */
    builder: "-source-",

    /**
     * Error reporting.
     *
     * How should DataTables report an error. Can take the value 'alert',
     * 'throw', 'none' or a function.
     *
     *  @type string|function
     *  @default alert
     */
    errMode: "alert",

    /**
     * Legacy so v1 plug-ins don't throw js errors on load
     */
    feature: [],

    /**
     * Feature plug-ins.
     *
     * This is an object of callbacks which provide the features for DataTables
     * to be initialised via the `layout` option.
     */
    features: {},

    /**
     * Row searching.
     *
     * This method of searching is complimentary to the default type based
     * searching, and a lot more comprehensive as it allows you complete control
     * over the searching logic. Each element in this array is a function
     * (parameters described below) that is called for every row in the table,
     * and your logic decides if it should be included in the searching data set
     * or not.
     *
     * Searching functions have the following input parameters:
     *
     * 1. `{object}` DataTables settings object: see
     *    {@link DataTable.models.oSettings}
     * 2. `{array|object}` Data for the row to be processed (same as the
     *    original format that was passed in as the data source, or an array
     *    from a DOM data source
     * 3. `{int}` Row index ({@link DataTable.models.oSettings.aoData}), which
     *    can be useful to retrieve the `TR` element if you need DOM interaction.
     *
     * And the following return is expected:
     *
     * * {boolean} Include the row in the searched result set (true) or not
     *   (false)
     *
     * Note that as with the main search ability in DataTables, technically this
     * is "filtering", since it is subtractive. However, for consistency in
     * naming we call it searching here.
     *
     *  @type array
     *  @default []
     *
     *  @example
     *    // The following example shows custom search being applied to the
     *    // fourth column (i.e. the data[3] index) based on two input values
     *    // from the end-user, matching the data in a certain range.
     *    $.fn.dataTable.ext.search.push(
     *      function( settings, data, dataIndex ) {
     *        var min = document.getElementById('min').value * 1;
     *        var max = document.getElementById('max').value * 1;
     *        var version = data[3] == "-" ? 0 : data[3]*1;
     *
     *        if ( min == "" && max == "" ) {
     *          return true;
     *        }
     *        else if ( min == "" && version < max ) {
     *          return true;
     *        }
     *        else if ( min < version && "" == max ) {
     *          return true;
     *        }
     *        else if ( min < version && version < max ) {
     *          return true;
     *        }
     *        return false;
     *      }
     *    );
     */
    search: [],

    /**
     * Selector extensions
     *
     * The `selector` option can be used to extend the options available for the
     * selector modifier options (`selector-modifier` object data type) that
     * each of the three built in selector types offer (row, column and cell +
     * their plural counterparts). For example the Select extension uses this
     * mechanism to provide an option to select only rows, columns and cells
     * that have been marked as selected by the end user (`{selected: true}`),
     * which can be used in conjunction with the existing built in selector
     * options.
     *
     * Each property is an array to which functions can be pushed. The functions
     * take three attributes:
     *
     * * Settings object for the host table
     * * Options object (`selector-modifier` object type)
     * * Array of selected item indexes
     *
     * The return is an array of the resulting item indexes after the custom
     * selector has been applied.
     *
     *  @type object
     */
    selector: {
      cell: [],
      column: [],
      row: [],
    },

    /**
     * Legacy configuration options. Enable and disable legacy options that
     * are available in DataTables.
     *
     *  @type object
     */
    legacy: {
      /**
       * Enable / disable DataTables 1.9 compatible server-side processing
       * requests
       *
       *  @type boolean
       *  @default null
       */
      ajax: null,
    },

    /**
     * Pagination plug-in methods.
     *
     * Each entry in this object is a function and defines which buttons should
     * be shown by the pagination rendering method that is used for the table:
     * {@link DataTable.ext.renderer.pageButton}. The renderer addresses how the
     * buttons are displayed in the document, while the functions here tell it
     * what buttons to display. This is done by returning an array of button
     * descriptions (what each button will do).
     *
     * Pagination types (the four built in options and any additional plug-in
     * options defined here) can be used through the `paginationType`
     * initialisation parameter.
     *
     * The functions defined take two parameters:
     *
     * 1. `{int} page` The current page index
     * 2. `{int} pages` The number of pages in the table
     *
     * Each function is expected to return an array where each element of the
     * array can be one of:
     *
     * * `first` - Jump to first page when activated
     * * `last` - Jump to last page when activated
     * * `previous` - Show previous page when activated
     * * `next` - Show next page when activated
     * * `{int}` - Show page of the index given
     * * `{array}` - A nested array containing the above elements to add a
     *   containing 'DIV' element (might be useful for styling).
     *
     * Note that DataTables v1.9- used this object slightly differently whereby
     * an object with two functions would be defined for each plug-in. That
     * ability is still supported by DataTables 1.10+ to provide backwards
     * compatibility, but this option of use is now decremented and no longer
     * documented in DataTables 1.10+.
     *
     *  @type object
     *  @default {}
     *
     *  @example
     *    // Show previous, next and current page buttons only
     *    $.fn.dataTableExt.oPagination.current = function ( page, pages ) {
     *      return [ 'previous', page, 'next' ];
     *    };
     */
    pager: {},

    renderer: {
      pageButton: {},
      header: {},
    },

    /**
     * Ordering plug-ins - custom data source
     *
     * The extension options for ordering of data available here is complimentary
     * to the default type based ordering that DataTables typically uses. It
     * allows much greater control over the the data that is being used to
     * order a column, but is necessarily therefore more complex.
     *
     * This type of ordering is useful if you want to do ordering based on data
     * live from the DOM (for example the contents of an 'input' element) rather
     * than just the static string that DataTables knows of.
     *
     * The way these plug-ins work is that you create an array of the values you
     * wish to be ordering for the column in question and then return that
     * array. The data in the array much be in the index order of the rows in
     * the table (not the currently ordering order!). Which order data gathering
     * function is run here depends on the `dt-init columns.orderDataType`
     * parameter that is used for the column (if any).
     *
     * The functions defined take two parameters:
     *
     * 1. `{object}` DataTables settings object: see
     *    {@link DataTable.models.oSettings}
     * 2. `{int}` Target column index
     *
     * Each function is expected to return an array:
     *
     * * `{array}` Data for the column to be ordering upon
     *
     *  @type array
     *
     *  @example
     *    // Ordering using `input` node values
     *    $.fn.dataTable.ext.order['dom-text'] = function  ( settings, col )
     *    {
     *      return this.api().column( col, {order:'index'} ).nodes().map( function ( td, i ) {
     *        return $('input', td).val();
     *      } );
     *    }
     */
    order: {},

    /**
     * Type based plug-ins.
     *
     * Each column in DataTables has a type assigned to it, either by automatic
     * detection or by direct assignment using the `type` option for the column.
     * The type of a column will effect how it is ordering and search (plug-ins
     * can also make use of the column type if required).
     *
     * @namespace
     */
    type: {
      /**
       * Automatic column class assignment
       */
      className: {},

      /**
       * Type detection functions.
       *
       * The functions defined in this object are used to automatically detect
       * a column's type, making initialisation of DataTables super easy, even
       * when complex data is in the table.
       *
       * The functions defined take two parameters:
       *
       *  1. `{*}` Data from the column cell to be analysed
       *  2. `{settings}` DataTables settings object. This can be used to
       *     perform context specific type detection - for example detection
       *     based on language settings such as using a comma for a decimal
       *     place. Generally speaking the options from the settings will not
       *     be required
       *
       * Each function is expected to return:
       *
       * * `{string|null}` Data type detected, or null if unknown (and thus
       *   pass it on to the other type detection functions.
       *
       *  @type array
       *
       *  @example
       *    // Currency type detection plug-in:
       *    $.fn.dataTable.ext.type.detect.push(
       *      function ( data, settings ) {
       *        // Check the numeric part
       *        if ( ! data.substring(1).match(/[0-9]/) ) {
       *          return null;
       *        }
       *
       *        // Check prefixed by currency
       *        if ( data.charAt(0) == '$' || data.charAt(0) == '&pound;' ) {
       *          return 'currency';
       *        }
       *        return null;
       *      }
       *    );
       */
      detect: [],

      /**
       * Automatic renderer assignment
       */
      render: {},

      /**
       * Type based search formatting.
       *
       * The type based searching functions can be used to pre-format the
       * data to be search on. For example, it can be used to strip HTML
       * tags or to de-format telephone numbers for numeric only searching.
       *
       * Note that is a search is not defined for a column of a given type,
       * no search formatting will be performed.
       *
       * Pre-processing of searching data plug-ins - When you assign the sType
       * for a column (or have it automatically detected for you by DataTables
       * or a type detection plug-in), you will typically be using this for
       * custom sorting, but it can also be used to provide custom searching
       * by allowing you to pre-processing the data and returning the data in
       * the format that should be searched upon. This is done by adding
       * functions this object with a parameter name which matches the sType
       * for that target column. This is the corollary of <i>afnSortData</i>
       * for searching data.
       *
       * The functions defined take a single parameter:
       *
       *  1. `{*}` Data from the column cell to be prepared for searching
       *
       * Each function is expected to return:
       *
       * * `{string|null}` Formatted string that will be used for the searching.
       *
       *  @type object
       *  @default {}
       *
       *  @example
       *    $.fn.dataTable.ext.type.search['title-numeric'] = function ( d ) {
       *      return d.replace(/\n/g," ").replace( /<.*?>/g, "" );
       *    }
       */
      search: {},

      /**
       * Type based ordering.
       *
       * The column type tells DataTables what ordering to apply to the table
       * when a column is sorted upon. The order for each type that is defined,
       * is defined by the functions available in this object.
       *
       * Each ordering option can be described by three properties added to
       * this object:
       *
       * * `{type}-pre` - Pre-formatting function
       * * `{type}-asc` - Ascending order function
       * * `{type}-desc` - Descending order function
       *
       * All three can be used together, only `{type}-pre` or only
       * `{type}-asc` and `{type}-desc` together. It is generally recommended
       * that only `{type}-pre` is used, as this provides the optimal
       * implementation in terms of speed, although the others are provided
       * for compatibility with existing Javascript sort functions.
       *
       * `{type}-pre`: Functions defined take a single parameter:
       *
       *  1. `{*}` Data from the column cell to be prepared for ordering
       *
       * And return:
       *
       * * `{*}` Data to be sorted upon
       *
       * `{type}-asc` and `{type}-desc`: Functions are typical Javascript sort
       * functions, taking two parameters:
       *
       *  1. `{*}` Data to compare to the second parameter
       *  2. `{*}` Data to compare to the first parameter
       *
       * And returning:
       *
       * * `{*}` Ordering match: <0 if first parameter should be sorted lower
       *   than the second parameter, ===0 if the two parameters are equal and
       *   >0 if the first parameter should be sorted height than the second
       *   parameter.
       *
       *  @type object
       *  @default {}
       *
       *  @example
       *    // Numeric ordering of formatted numbers with a pre-formatter
       *    $.extend( $.fn.dataTable.ext.type.order, {
       *      "string-pre": function(x) {
       *        a = (a === "-" || a === "") ? 0 : a.replace( /[^\d\-\.]/g, "" );
       *        return parseFloat( a );
       *      }
       *    } );
       *
       *  @example
       *    // Case-sensitive string ordering, with no pre-formatting method
       *    $.extend( $.fn.dataTable.ext.order, {
       *      "string-case-asc": function(x,y) {
       *        return ((x < y) ? -1 : ((x > y) ? 1 : 0));
       *      },
       *      "string-case-desc": function(x,y) {
       *        return ((x < y) ? 1 : ((x > y) ? -1 : 0));
       *      }
       *    } );
       */
      order: {},
    },

    /**
     * Unique DataTables instance counter
     *
     * @type int
     * @private
     */
    _unique: 0,

    //
    // Depreciated
    // The following properties are retained for backwards compatibility only.
    // The should not be used in new projects and will be removed in a future
    // version
    //

    /**
     * Version check function.
     *  @type function
     *  @depreciated Since 1.10
     */
    fnVersionCheck: DataTable.fnVersionCheck,

    /**
     * Index for what 'this' index API functions should use
     *  @type int
     *  @deprecated Since v1.10
     */
    iApiIndex: 0,

    /**
     * Software version
     *  @type string
     *  @deprecated Since v1.10
     */
    sVersion: DataTable.version,
  };

  //
  // Backwards compatibility. Alias to pre 1.10 Hungarian notation counter parts
  //
  $.extend(_ext, {
    afnFiltering: _ext.search,
    aTypes: _ext.type.detect,
    ofnSearch: _ext.type.search,
    oSort: _ext.type.order,
    afnSortData: _ext.order,
    aoFeatures: _ext.feature,
    oStdClasses: _ext.classes,
    oPagination: _ext.pager,
  });

  $.extend(DataTable.ext.classes, {
    container: "dt-container",
    empty: {
      row: "dt-empty",
    },
    info: {
      container: "dt-info",
    },
    length: {
      container: "dt-length",
      select: "dt-input",
    },
    order: {
      canAsc: "dt-orderable-asc",
      canDesc: "dt-orderable-desc",
      isAsc: "dt-ordering-asc",
      isDesc: "dt-ordering-desc",
      none: "dt-orderable-none",
      position: "sorting_",
    },
    processing: {
      container: "dt-processing",
    },
    scrolling: {
      body: "dt-scroll-body",
      container: "dt-scroll",
      footer: {
        self: "dt-scroll-foot",
        inner: "dt-scroll-footInner",
      },
      header: {
        self: "dt-scroll-head",
        inner: "dt-scroll-headInner",
      },
    },
    search: {
      container: "dt-search",
      input: "dt-input",
    },
    table: "dataTable",
    tbody: {
      cell: "",
      row: "",
    },
    thead: {
      cell: "",
      row: "",
    },
    tfoot: {
      cell: "",
      row: "",
    },
    paging: {
      active: "current",
      button: "dt-paging-button",
      container: "dt-paging",
      disabled: "disabled",
    },
  });

  /*
   * It is useful to have variables which are scoped locally so only the
   * DataTables functions can access them and they don't leak into global space.
   * At the same time these functions are often useful over multiple files in the
   * core and API, so we list, or at least document, all variables which are used
   * by DataTables as private variables here. This also ensures that there is no
   * clashing of variable names and that they can easily referenced for reuse.
   */

  // Defined else where
  //  _selector_run
  //  _selector_opts
  //  _selector_row_indexes

  var _ext; // DataTable.ext
  var _Api; // DataTable.Api
  var _api_register; // DataTable.Api.register
  var _api_registerPlural; // DataTable.Api.registerPlural

  var _re_dic = {};
  var _re_new_lines = /[\r\n\u2028]/g;
  var _re_html = /<.*?>/g;

  // This is not strict ISO8601 - Date.parse() is quite lax, although
  // implementations differ between browsers.
  var _re_date = /^\d{2,4}[./-]\d{1,2}[./-]\d{1,2}([T ]{1}\d{1,2}[:.]\d{2}([.:]\d{2})?)?$/;

  // Escape regular expression special characters
  var _re_escape_regex = new RegExp("(\\" + ["/", ".", "*", "+", "?", "|", "(", ")", "[", "]", "{", "}", "\\", "$", "^", "-"].join("|\\") + ")", "g");

  // https://en.wikipedia.org/wiki/Foreign_exchange_market
  // - \u20BD - Russian ruble.
  // - \u20a9 - South Korean Won
  // - \u20BA - Turkish Lira
  // - \u20B9 - Indian Rupee
  // - R - Brazil (R$) and South Africa
  // - fr - Swiss Franc
  // - kr - Swedish krona, Norwegian krone and Danish krone
  // - \u2009 is thin space and \u202F is narrow no-break space, both used in many
  // - Ƀ - Bitcoin
  // - Ξ - Ethereum
  //   standards as thousands separators.
  var _re_formatted_numeric = /['\u00A0,$£€¥%\u2009\u202F\u20BD\u20a9\u20BArfkɃΞ]/gi;

  var _empty = function (d) {
    return !d || d === true || d === "-" ? true : false;
  };

  var _intVal = function (s) {
    var integer = parseInt(s, 10);
    return !isNaN(integer) && isFinite(s) ? integer : null;
  };

  // Convert from a formatted number with characters other than `.` as the
  // decimal place, to a Javascript number
  var _numToDecimal = function (num, decimalPoint) {
    // Cache created regular expressions for speed as this function is called often
    if (!_re_dic[decimalPoint]) {
      _re_dic[decimalPoint] = new RegExp(_fnEscapeRegex(decimalPoint), "g");
    }
    return typeof num === "string" && decimalPoint !== "." ? num.replace(/\./g, "").replace(_re_dic[decimalPoint], ".") : num;
  };

  var _isNumber = function (d, decimalPoint, formatted) {
    var type = typeof d;
    var strType = type === "string";

    if (type === "number" || type === "bigint") {
      return true;
    }

    // If empty return immediately so there must be a number if it is a
    // formatted string (this stops the string "k", or "kr", etc being detected
    // as a formatted number for currency
    if (_empty(d)) {
      return true;
    }

    if (decimalPoint && strType) {
      d = _numToDecimal(d, decimalPoint);
    }

    if (formatted && strType) {
      d = d.replace(_re_formatted_numeric, "");
    }

    return !isNaN(parseFloat(d)) && isFinite(d);
  };

  // A string without HTML in it can be considered to be HTML still
  var _isHtml = function (d) {
    return _empty(d) || typeof d === "string";
  };

  // Is a string a number surrounded by HTML?
  var _htmlNumeric = function (d, decimalPoint, formatted) {
    if (_empty(d)) {
      return true;
    }

    // input and select strings mean that this isn't just a number
    if (typeof d === "string" && d.match(/<(input|select)/i)) {
      return null;
    }

    var html = _isHtml(d);
    return !html ? null : _isNumber(_stripHtml(d), decimalPoint, formatted) ? true : null;
  };

  var _pluck = function (a, prop, prop2) {
    var out = [];
    var i = 0,
      ien = a.length;

    // Could have the test in the loop for slightly smaller code, but speed
    // is essential here
    if (prop2 !== undefined) {
      for (; i < ien; i++) {
        if (a[i] && a[i][prop]) {
          out.push(a[i][prop][prop2]);
        }
      }
    } else {
      for (; i < ien; i++) {
        if (a[i]) {
          out.push(a[i][prop]);
        }
      }
    }

    return out;
  };

  // Basically the same as _pluck, but rather than looping over `a` we use `order`
  // as the indexes to pick from `a`
  var _pluck_order = function (a, order, prop, prop2) {
    var out = [];
    var i = 0,
      ien = order.length;

    // Could have the test in the loop for slightly smaller code, but speed
    // is essential here
    if (prop2 !== undefined) {
      for (; i < ien; i++) {
        if (a[order[i]][prop]) {
          out.push(a[order[i]][prop][prop2]);
        }
      }
    } else {
      for (; i < ien; i++) {
        if (a[order[i]]) {
          out.push(a[order[i]][prop]);
        }
      }
    }

    return out;
  };

  var _range = function (len, start) {
    var out = [];
    var end;

    if (start === undefined) {
      start = 0;
      end = len;
    } else {
      end = start;
      start = len;
    }

    for (var i = start; i < end; i++) {
      out.push(i);
    }

    return out;
  };

  var _removeEmpty = function (a) {
    var out = [];

    for (var i = 0, ien = a.length; i < ien; i++) {
      if (a[i]) {
        // careful - will remove all falsy values!
        out.push(a[i]);
      }
    }

    return out;
  };

  // Replaceable function in api.util
  var _stripHtml = function (d) {
    return d
      .replace(_re_html, "") // Complete tags
      .replace(/<script/i, ""); // Safety for incomplete script tag
  };

  // Replaceable function in api.util
  var _escapeHtml = function (d) {
    if (Array.isArray(d)) {
      d = d.join(",");
    }

    return typeof d === "string" ? d.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;") : d;
  };

  // Remove diacritics from a string by decomposing it and then removing
  // non-ascii characters
  var _normalize = function (str, both) {
    if (typeof str !== "string") {
      return str;
    }

    // It is faster to just run `normalize` than it is to check if
    // we need to with a regex!
    var res = str.normalize("NFD");

    // Equally, here we check if a regex is needed or not
    return res.length !== str.length ? (both === true ? str + " " : "") + res.replace(/[\u0300-\u036f]/g, "") : res;
  };

  /**
   * Determine if all values in the array are unique. This means we can short
   * cut the _unique method at the cost of a single loop. A sorted array is used
   * to easily check the values.
   *
   * @param  {array} src Source array
   * @return {boolean} true if all unique, false otherwise
   * @ignore
   */
  var _areAllUnique = function (src) {
    if (src.length < 2) {
      return true;
    }

    var sorted = src.slice().sort();
    var last = sorted[0];

    for (var i = 1, ien = sorted.length; i < ien; i++) {
      if (sorted[i] === last) {
        return false;
      }

      last = sorted[i];
    }

    return true;
  };

  /**
   * Find the unique elements in a source array.
   *
   * @param  {array} src Source array
   * @return {array} Array of unique items
   * @ignore
   */
  var _unique = function (src) {
    if (Array.from && Set) {
      return Array.from(new Set(src));
    }

    if (_areAllUnique(src)) {
      return src.slice();
    }

    // A faster unique method is to use object keys to identify used values,
    // but this doesn't work with arrays or objects, which we must also
    // consider. See jsperf.app/compare-array-unique-versions/4 for more
    // information.
    var out = [],
      val,
      i,
      ien = src.length,
      j,
      k = 0;

    again: for (i = 0; i < ien; i++) {
      val = src[i];

      for (j = 0; j < k; j++) {
        if (out[j] === val) {
          continue again;
        }
      }

      out.push(val);
      k++;
    }

    return out;
  };

  // Surprisingly this is faster than [].concat.apply
  // https://jsperf.com/flatten-an-array-loop-vs-reduce/2
  var _flatten = function (out, val) {
    if (Array.isArray(val)) {
      for (var i = 0; i < val.length; i++) {
        _flatten(out, val[i]);
      }
    } else {
      out.push(val);
    }

    return out;
  };

  // Similar to jQuery's addClass, but use classList.add
  function _addClass(el, name) {
    if (name) {
      name.split(" ").forEach(function (n) {
        if (n) {
          // `add` does deduplication, so no need to check `contains`
          el.classList.add(n);
        }
      });
    }
  }

  /**
   * DataTables utility methods
   *
   * This namespace provides helper methods that DataTables uses internally to
   * create a DataTable, but which are not exclusively used only for DataTables.
   * These methods can be used by extension authors to save the duplication of
   * code.
   *
   *  @namespace
   */
  DataTable.util = {
    /**
     * Return a string with diacritic characters decomposed
     * @param {*} mixed Function or string to normalize
     * @param {*} both Return original string and the normalized string
     * @returns String or undefined
     */
    diacritics: function (mixed, both) {
      var type = typeof mixed;

      if (type !== "function") {
        return _normalize(mixed, both);
      }
      _normalize = mixed;
    },

    /**
     * Debounce a function
     *
     * @param {function} fn Function to be called
     * @param {integer} freq Call frequency in mS
     * @return {function} Wrapped function
     */
    debounce: function (fn, timeout) {
      var timer;

      return function () {
        var that = this;
        var args = arguments;

        clearTimeout(timer);

        timer = setTimeout(function () {
          fn.apply(that, args);
        }, timeout || 250);
      };
    },

    /**
     * Throttle the calls to a function. Arguments and context are maintained
     * for the throttled function.
     *
     * @param {function} fn Function to be called
     * @param {integer} freq Call frequency in mS
     * @return {function} Wrapped function
     */
    throttle: function (fn, freq) {
      var frequency = freq !== undefined ? freq : 200,
        last,
        timer;

      return function () {
        var that = this,
          now = +new Date(),
          args = arguments;

        if (last && now < last + frequency) {
          clearTimeout(timer);

          timer = setTimeout(function () {
            last = undefined;
            fn.apply(that, args);
          }, frequency);
        } else {
          last = now;
          fn.apply(that, args);
        }
      };
    },

    /**
     * Escape a string such that it can be used in a regular expression
     *
     *  @param {string} val string to escape
     *  @returns {string} escaped string
     */
    escapeRegex: function (val) {
      return val.replace(_re_escape_regex, "\\$1");
    },

    /**
     * Create a function that will write to a nested object or array
     * @param {*} source JSON notation string
     * @returns Write function
     */
    set: function (source) {
      if ($.isPlainObject(source)) {
        /* Unlike get, only the underscore (global) option is used for for
         * setting data since we don't know the type here. This is why an object
         * option is not documented for `mData` (which is read/write), but it is
         * for `mRender` which is read only.
         */
        return DataTable.util.set(source._);
      } else if (source === null) {
        // Nothing to do when the data source is null
        return function () {};
      } else if (typeof source === "function") {
        return function (data, val, meta) {
          source(data, "set", val, meta);
        };
      } else if (typeof source === "string" && (source.indexOf(".") !== -1 || source.indexOf("[") !== -1 || source.indexOf("(") !== -1)) {
        // Like the get, we need to get data from a nested object
        var setData = function (data, val, src) {
          var a = _fnSplitObjNotation(src),
            b;
          var aLast = a[a.length - 1];
          var arrayNotation, funcNotation, o, innerSrc;

          for (var i = 0, iLen = a.length - 1; i < iLen; i++) {
            // Protect against prototype pollution
            if (a[i] === "__proto__" || a[i] === "constructor") {
              throw new Error("Cannot set prototype values");
            }

            // Check if we are dealing with an array notation request
            arrayNotation = a[i].match(__reArray);
            funcNotation = a[i].match(__reFn);

            if (arrayNotation) {
              a[i] = a[i].replace(__reArray, "");
              data[a[i]] = [];

              // Get the remainder of the nested object to set so we can recurse
              b = a.slice();
              b.splice(0, i + 1);
              innerSrc = b.join(".");

              // Traverse each entry in the array setting the properties requested
              if (Array.isArray(val)) {
                for (var j = 0, jLen = val.length; j < jLen; j++) {
                  o = {};
                  setData(o, val[j], innerSrc);
                  data[a[i]].push(o);
                }
              } else {
                // We've been asked to save data to an array, but it
                // isn't array data to be saved. Best that can be done
                // is to just save the value.
                data[a[i]] = val;
              }

              // The inner call to setData has already traversed through the remainder
              // of the source and has set the data, thus we can exit here
              return;
            } else if (funcNotation) {
              // Function call
              a[i] = a[i].replace(__reFn, "");
              data = data[a[i]](val);
            }

            // If the nested object doesn't currently exist - since we are
            // trying to set the value - create it
            if (data[a[i]] === null || data[a[i]] === undefined) {
              data[a[i]] = {};
            }
            data = data[a[i]];
          }

          // Last item in the input - i.e, the actual set
          if (aLast.match(__reFn)) {
            // Function call
            data = data[aLast.replace(__reFn, "")](val);
          } else {
            // If array notation is used, we just want to strip it and use the property name
            // and assign the value. If it isn't used, then we get the result we want anyway
            data[aLast.replace(__reArray, "")] = val;
          }
        };

        return function (data, val) {
          // meta is also passed in, but not used
          return setData(data, val, source);
        };
      } else {
        // Array or flat object mapping
        return function (data, val) {
          // meta is also passed in, but not used
          data[source] = val;
        };
      }
    },

    /**
     * Create a function that will read nested objects from arrays, based on JSON notation
     * @param {*} source JSON notation string
     * @returns Value read
     */
    get: function (source) {
      if ($.isPlainObject(source)) {
        // Build an object of get functions, and wrap them in a single call
        var o = {};
        $.each(source, function (key, val) {
          if (val) {
            o[key] = DataTable.util.get(val);
          }
        });

        return function (data, type, row, meta) {
          var t = o[type] || o._;
          return t !== undefined ? t(data, type, row, meta) : data;
        };
      } else if (source === null) {
        // Give an empty string for rendering / sorting etc
        return function (data) {
          // type, row and meta also passed, but not used
          return data;
        };
      } else if (typeof source === "function") {
        return function (data, type, row, meta) {
          return source(data, type, row, meta);
        };
      } else if (typeof source === "string" && (source.indexOf(".") !== -1 || source.indexOf("[") !== -1 || source.indexOf("(") !== -1)) {
        /* If there is a . in the source string then the data source is in a
         * nested object so we loop over the data for each level to get the next
         * level down. On each loop we test for undefined, and if found immediately
         * return. This allows entire objects to be missing and sDefaultContent to
         * be used if defined, rather than throwing an error
         */
        var fetchData = function (data, type, src) {
          var arrayNotation, funcNotation, out, innerSrc;

          if (src !== "") {
            var a = _fnSplitObjNotation(src);

            for (var i = 0, iLen = a.length; i < iLen; i++) {
              // Check if we are dealing with special notation
              arrayNotation = a[i].match(__reArray);
              funcNotation = a[i].match(__reFn);

              if (arrayNotation) {
                // Array notation
                a[i] = a[i].replace(__reArray, "");

                // Condition allows simply [] to be passed in
                if (a[i] !== "") {
                  data = data[a[i]];
                }
                out = [];

                // Get the remainder of the nested object to get
                a.splice(0, i + 1);
                innerSrc = a.join(".");

                // Traverse each entry in the array getting the properties requested
                if (Array.isArray(data)) {
                  for (var j = 0, jLen = data.length; j < jLen; j++) {
                    out.push(fetchData(data[j], type, innerSrc));
                  }
                }

                // If a string is given in between the array notation indicators, that
                // is used to join the strings together, otherwise an array is returned
                var join = arrayNotation[0].substring(1, arrayNotation[0].length - 1);
                data = join === "" ? out : out.join(join);

                // The inner call to fetchData has already traversed through the remainder
                // of the source requested, so we exit from the loop
                break;
              } else if (funcNotation) {
                // Function call
                a[i] = a[i].replace(__reFn, "");
                data = data[a[i]]();
                continue;
              }

              if (data === null || data[a[i]] === null) {
                return null;
              } else if (data === undefined || data[a[i]] === undefined) {
                return undefined;
              }

              data = data[a[i]];
            }
          }

          return data;
        };

        return function (data, type) {
          // row and meta also passed, but not used
          return fetchData(data, type, source);
        };
      } else {
        // Array or flat object mapping
        return function (data) {
          // row and meta also passed, but not used
          return data[source];
        };
      }
    },

    stripHtml: function (mixed) {
      var type = typeof mixed;

      if (type === "function") {
        _stripHtml = mixed;
        return;
      } else if (type === "string") {
        return _stripHtml(mixed);
      }
      return mixed;
    },

    escapeHtml: function (mixed) {
      var type = typeof mixed;

      if (type === "function") {
        _escapeHtml = mixed;
        return;
      } else if (type === "string" || Array.isArray(mixed)) {
        return _escapeHtml(mixed);
      }
      return mixed;
    },

    unique: _unique,
  };

  /**
   * Create a mapping object that allows camel case parameters to be looked up
   * for their Hungarian counterparts. The mapping is stored in a private
   * parameter called `_hungarianMap` which can be accessed on the source object.
   *  @param {object} o
   *  @memberof DataTable#oApi
   */
  function _fnHungarianMap(o) {
    var hungarian = "a aa ai ao as b fn i m o s ",
      match,
      newKey,
      map = {};

    $.each(o, function (key) {
      match = key.match(/^([^A-Z]+?)([A-Z])/);

      if (match && hungarian.indexOf(match[1] + " ") !== -1) {
        newKey = key.replace(match[0], match[2].toLowerCase());
        map[newKey] = key;

        if (match[1] === "o") {
          _fnHungarianMap(o[key]);
        }
      }
    });

    o._hungarianMap = map;
  }

  /**
   * Convert from camel case parameters to Hungarian, based on a Hungarian map
   * created by _fnHungarianMap.
   *  @param {object} src The model object which holds all parameters that can be
   *    mapped.
   *  @param {object} user The object to convert from camel case to Hungarian.
   *  @param {boolean} force When set to `true`, properties which already have a
   *    Hungarian value in the `user` object will be overwritten. Otherwise they
   *    won't be.
   *  @memberof DataTable#oApi
   */
  function _fnCamelToHungarian(src, user, force) {
    if (!src._hungarianMap) {
      _fnHungarianMap(src);
    }

    var hungarianKey;

    $.each(user, function (key) {
      hungarianKey = src._hungarianMap[key];

      if (hungarianKey !== undefined && (force || user[hungarianKey] === undefined)) {
        // For objects, we need to buzz down into the object to copy parameters
        if (hungarianKey.charAt(0) === "o") {
          // Copy the camelCase options over to the hungarian
          if (!user[hungarianKey]) {
            user[hungarianKey] = {};
          }
          $.extend(true, user[hungarianKey], user[key]);

          _fnCamelToHungarian(src[hungarianKey], user[hungarianKey], force);
        } else {
          user[hungarianKey] = user[key];
        }
      }
    });
  }

  /**
   * Map one parameter onto another
   *  @param {object} o Object to map
   *  @param {*} knew The new parameter name
   *  @param {*} old The old parameter name
   */
  var _fnCompatMap = function (o, knew, old) {
    if (o[knew] !== undefined) {
      o[old] = o[knew];
    }
  };

  /**
   * Provide backwards compatibility for the main DT options. Note that the new
   * options are mapped onto the old parameters, so this is an external interface
   * change only.
   *  @param {object} init Object to map
   */
  function _fnCompatOpts(init) {
    _fnCompatMap(init, "ordering", "bSort");
    _fnCompatMap(init, "orderMulti", "bSortMulti");
    _fnCompatMap(init, "orderClasses", "bSortClasses");
    _fnCompatMap(init, "orderCellsTop", "bSortCellsTop");
    _fnCompatMap(init, "order", "aaSorting");
    _fnCompatMap(init, "orderFixed", "aaSortingFixed");
    _fnCompatMap(init, "paging", "bPaginate");
    _fnCompatMap(init, "pagingType", "sPaginationType");
    _fnCompatMap(init, "pageLength", "iDisplayLength");
    _fnCompatMap(init, "searching", "bFilter");

    // Boolean initialisation of x-scrolling
    if (typeof init.sScrollX === "boolean") {
      init.sScrollX = init.sScrollX ? "100%" : "";
    }
    if (typeof init.scrollX === "boolean") {
      init.scrollX = init.scrollX ? "100%" : "";
    }

    // Column search objects are in an array, so it needs to be converted
    // element by element
    var searchCols = init.aoSearchCols;

    if (searchCols) {
      for (var i = 0, ien = searchCols.length; i < ien; i++) {
        if (searchCols[i]) {
          _fnCamelToHungarian(DataTable.models.oSearch, searchCols[i]);
        }
      }
    }

    // Enable search delay if server-side processing is enabled
    if (init.serverSide && !init.searchDelay) {
      init.searchDelay = 400;
    }
  }

  /**
   * Provide backwards compatibility for column options. Note that the new options
   * are mapped onto the old parameters, so this is an external interface change
   * only.
   *  @param {object} init Object to map
   */
  function _fnCompatCols(init) {
    _fnCompatMap(init, "orderable", "bSortable");
    _fnCompatMap(init, "orderData", "aDataSort");
    _fnCompatMap(init, "orderSequence", "asSorting");
    _fnCompatMap(init, "orderDataType", "sortDataType");

    // orderData can be given as an integer
    var dataSort = init.aDataSort;
    if (typeof dataSort === "number" && !Array.isArray(dataSort)) {
      init.aDataSort = [dataSort];
    }
  }

  /**
   * Browser feature detection for capabilities, quirks
   *  @param {object} settings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnBrowserDetect(settings) {
    // We don't need to do this every time DataTables is constructed, the values
    // calculated are specific to the browser and OS configuration which we
    // don't expect to change between initialisations
    if (!DataTable.__browser) {
      var browser = {};
      DataTable.__browser = browser;

      // Scrolling feature / quirks detection
      var n = $("<div/>")
        .css({
          position: "fixed",
          top: 0,
          left: -1 * window.pageXOffset, // allow for scrolling
          height: 1,
          width: 1,
          overflow: "hidden",
        })
        .append(
          $("<div/>")
            .css({
              position: "absolute",
              top: 1,
              left: 1,
              width: 100,
              overflow: "scroll",
            })
            .append(
              $("<div/>").css({
                width: "100%",
                height: 10,
              })
            )
        )
        .appendTo("body");

      var outer = n.children();
      var inner = outer.children();

      // Get scrollbar width
      browser.barWidth = outer[0].offsetWidth - outer[0].clientWidth;

      // In rtl text layout, some browsers (most, but not all) will place the
      // scrollbar on the left, rather than the right.
      browser.bScrollbarLeft = Math.round(inner.offset().left) !== 1;

      n.remove();
    }

    $.extend(settings.oBrowser, DataTable.__browser);
    settings.oScroll.iBarWidth = DataTable.__browser.barWidth;
  }

  /**
   * Add a column to the list used for the table with default values
   *  @param {object} oSettings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnAddColumn(oSettings) {
    // Add column to aoColumns array
    var oDefaults = DataTable.defaults.column;
    var iCol = oSettings.aoColumns.length;
    var oCol = $.extend({}, DataTable.models.oColumn, oDefaults, {
      aDataSort: oDefaults.aDataSort ? oDefaults.aDataSort : [iCol],
      mData: oDefaults.mData ? oDefaults.mData : iCol,
      idx: iCol,
      searchFixed: {},
      colEl: $("<col>"),
    });
    oSettings.aoColumns.push(oCol);

    // Add search object for column specific search. Note that the `searchCols[ iCol ]`
    // passed into extend can be undefined. This allows the user to give a default
    // with only some of the parameters defined, and also not give a default
    var searchCols = oSettings.aoPreSearchCols;
    searchCols[iCol] = $.extend({}, DataTable.models.oSearch, searchCols[iCol]);
  }

  /**
   * Apply options for a column
   *  @param {object} oSettings dataTables settings object
   *  @param {int} iCol column index to consider
   *  @param {object} oOptions object with sType, bVisible and bSearchable etc
   *  @memberof DataTable#oApi
   */
  function _fnColumnOptions(oSettings, iCol, oOptions) {
    var oCol = oSettings.aoColumns[iCol];

    /* User specified column options */
    if (oOptions !== undefined && oOptions !== null) {
      // Backwards compatibility
      _fnCompatCols(oOptions);

      // Map camel case parameters to their Hungarian counterparts
      _fnCamelToHungarian(DataTable.defaults.column, oOptions, true);

      /* Backwards compatibility for mDataProp */
      if (oOptions.mDataProp !== undefined && !oOptions.mData) {
        oOptions.mData = oOptions.mDataProp;
      }

      if (oOptions.sType) {
        oCol._sManualType = oOptions.sType;
      }

      // `class` is a reserved word in Javascript, so we need to provide
      // the ability to use a valid name for the camel case input
      if (oOptions.className && !oOptions.sClass) {
        oOptions.sClass = oOptions.className;
      }

      var origClass = oCol.sClass;

      $.extend(oCol, oOptions);
      _fnMap(oCol, oOptions, "sWidth", "sWidthOrig");

      // Merge class from previously defined classes with this one, rather than just
      // overwriting it in the extend above
      if (origClass !== oCol.sClass) {
        oCol.sClass = origClass + " " + oCol.sClass;
      }

      /* iDataSort to be applied (backwards compatibility), but aDataSort will take
       * priority if defined
       */
      if (oOptions.iDataSort !== undefined) {
        oCol.aDataSort = [oOptions.iDataSort];
      }
      _fnMap(oCol, oOptions, "aDataSort");
    }

    /* Cache the data get and set functions for speed */
    var mDataSrc = oCol.mData;
    var mData = _fnGetObjectDataFn(mDataSrc);

    // The `render` option can be given as an array to access the helper rendering methods.
    // The first element is the rendering method to use, the rest are the parameters to pass
    if (oCol.mRender && Array.isArray(oCol.mRender)) {
      var copy = oCol.mRender.slice();
      var name = copy.shift();

      oCol.mRender = DataTable.render[name].apply(window, copy);
    }

    oCol._render = oCol.mRender ? _fnGetObjectDataFn(oCol.mRender) : null;

    var attrTest = function (src) {
      return typeof src === "string" && src.indexOf("@") !== -1;
    };
    oCol._bAttrSrc = $.isPlainObject(mDataSrc) && (attrTest(mDataSrc.sort) || attrTest(mDataSrc.type) || attrTest(mDataSrc.filter));
    oCol._setter = null;

    oCol.fnGetData = function (rowData, type, meta) {
      var innerData = mData(rowData, type, undefined, meta);

      return oCol._render && type ? oCol._render(innerData, type, rowData, meta) : innerData;
    };
    oCol.fnSetData = function (rowData, val, meta) {
      return _fnSetObjectDataFn(mDataSrc)(rowData, val, meta);
    };

    // Indicate if DataTables should read DOM data as an object or array
    // Used in _fnGetRowElements
    if (typeof mDataSrc !== "number" && !oCol._isArrayHost) {
      oSettings._rowReadObject = true;
    }

    /* Feature sorting overrides column specific when off */
    if (!oSettings.oFeatures.bSort) {
      oCol.bSortable = false;
    }
  }

  /**
   * Adjust the table column widths for new data. Note: you would probably want to
   * do a redraw after calling this function!
   *  @param {object} settings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnAdjustColumnSizing(settings) {
    _fnCalculateColumnWidths(settings);
    _fnColumnSizes(settings);

    var scroll = settings.oScroll;
    if (scroll.sY !== "" || scroll.sX !== "") {
      _fnScrollDraw(settings);
    }

    _fnCallbackFire(settings, null, "column-sizing", [settings]);
  }

  /**
   * Apply column sizes
   *
   * @param {*} settings DataTables settings object
   */
  function _fnColumnSizes(settings) {
    var cols = settings.aoColumns;

    for (var i = 0; i < cols.length; i++) {
      var width = _fnColumnsSumWidth(settings, [i], false, false);

      cols[i].colEl.css("width", width);
    }
  }

  /**
   * Convert the index of a visible column to the index in the data array (take account
   * of hidden columns)
   *  @param {object} oSettings dataTables settings object
   *  @param {int} iMatch Visible column index to lookup
   *  @returns {int} i the data index
   *  @memberof DataTable#oApi
   */
  function _fnVisibleToColumnIndex(oSettings, iMatch) {
    var aiVis = _fnGetColumns(oSettings, "bVisible");

    return typeof aiVis[iMatch] === "number" ? aiVis[iMatch] : null;
  }

  /**
   * Convert the index of an index in the data array and convert it to the visible
   *   column index (take account of hidden columns)
   *  @param {int} iMatch Column index to lookup
   *  @param {object} oSettings dataTables settings object
   *  @returns {int} i the data index
   *  @memberof DataTable#oApi
   */
  function _fnColumnIndexToVisible(oSettings, iMatch) {
    var aiVis = _fnGetColumns(oSettings, "bVisible");
    var iPos = aiVis.indexOf(iMatch);

    return iPos !== -1 ? iPos : null;
  }

  /**
   * Get the number of visible columns
   *  @param {object} oSettings dataTables settings object
   *  @returns {int} i the number of visible columns
   *  @memberof DataTable#oApi
   */
  function _fnVisbleColumns(settings) {
    var layout = settings.aoHeader;
    var columns = settings.aoColumns;
    var vis = 0;

    if (layout.length) {
      for (var i = 0, ien = layout[0].length; i < ien; i++) {
        if (columns[i].bVisible && $(layout[0][i].cell).css("display") !== "none") {
          vis++;
        }
      }
    }

    return vis;
  }

  /**
   * Get an array of column indexes that match a given property
   *  @param {object} oSettings dataTables settings object
   *  @param {string} sParam Parameter in aoColumns to look for - typically
   *    bVisible or bSearchable
   *  @returns {array} Array of indexes with matched properties
   *  @memberof DataTable#oApi
   */
  function _fnGetColumns(oSettings, sParam) {
    var a = [];

    oSettings.aoColumns.map(function (val, i) {
      if (val[sParam]) {
        a.push(i);
      }
    });

    return a;
  }

  /**
   * Calculate the 'type' of a column
   *  @param {object} settings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnColumnTypes(settings) {
    var columns = settings.aoColumns;
    var data = settings.aoData;
    var types = DataTable.ext.type.detect;
    var i, ien, j, jen, k, ken;
    var col, detectedType, cache;

    // For each column, spin over the
    for (i = 0, ien = columns.length; i < ien; i++) {
      col = columns[i];
      cache = [];

      if (!col.sType && col._sManualType) {
        col.sType = col._sManualType;
      } else if (!col.sType) {
        for (j = 0, jen = types.length; j < jen; j++) {
          for (k = 0, ken = data.length; k < ken; k++) {
            if (!data[k]) {
              continue;
            }

            // Use a cache array so we only need to get the type data
            // from the formatter once (when using multiple detectors)
            if (cache[k] === undefined) {
              cache[k] = _fnGetCellData(settings, k, i, "type");
            }

            detectedType = types[j](cache[k], settings);

            // If null, then this type can't apply to this column, so
            // rather than testing all cells, break out. There is an
            // exception for the last type which is `html`. We need to
            // scan all rows since it is possible to mix string and HTML
            // types
            if (!detectedType && j !== types.length - 2) {
              break;
            }

            // Only a single match is needed for html type since it is
            // bottom of the pile and very similar to string - but it
            // must not be empty
            if (detectedType === "html" && !_empty(cache[k])) {
              break;
            }
          }

          // Type is valid for all data points in the column - use this
          // type
          if (detectedType) {
            col.sType = detectedType;
            break;
          }
        }

        // Fall back - if no type was detected, always use string
        if (!col.sType) {
          col.sType = "string";
        }
      }

      // Set class names for header / footer for auto type classes
      var autoClass = _ext.type.className[col.sType];

      if (autoClass) {
        _columnAutoClass(settings.aoHeader, i, autoClass);
        _columnAutoClass(settings.aoFooter, i, autoClass);
      }

      var renderer = _ext.type.render[col.sType];

      // This can only happen once! There is no way to remover
      // a renderer. After the first time the renderer has
      // already been set so createTr will run the renderer itself.
      if (renderer && !col._render) {
        col._render = DataTable.util.get(renderer);

        _columnAutoRender(settings, i);
      }
    }
  }

  /**
   * Apply an auto detected renderer to data which doesn't yet have
   * a renderer
   */
  function _columnAutoRender(settings, colIdx) {
    var data = settings.aoData;

    for (var i = 0; i < data.length; i++) {
      if (data[i].nTr) {
        // We have to update the display here since there is no
        // invalidation check for the data
        var display = _fnGetCellData(settings, i, colIdx, "display");

        data[i].displayData[colIdx] = display;
        _fnWriteCell(data[i].anCells[colIdx], display);

        // No need to update sort / filter data since it has
        // been invalidated and will be re-read with the
        // renderer now applied
      }
    }
  }

  /**
   * Apply a class name to a column's header cells
   */
  function _columnAutoClass(container, colIdx, className) {
    container.forEach(function (row) {
      if (row[colIdx].unique) {
        _addClass(row[colIdx].cell, className);
      }
    });
  }

  /**
   * Take the column definitions and static columns arrays and calculate how
   * they relate to column indexes. The callback function will then apply the
   * definition found for a column to a suitable configuration object.
   *  @param {object} oSettings dataTables settings object
   *  @param {array} aoColDefs The aoColumnDefs array that is to be applied
   *  @param {array} aoCols The aoColumns array that defines columns individually
   *  @param {array} headerLayout Layout for header as it was loaded
   *  @param {function} fn Callback function - takes two parameters, the calculated
   *    column index and the definition for that column.
   *  @memberof DataTable#oApi
   */
  function _fnApplyColumnDefs(oSettings, aoColDefs, aoCols, headerLayout, fn) {
    var i, iLen, j, jLen, k, kLen, def;
    var columns = oSettings.aoColumns;

    if (aoCols) {
      for (i = 0, iLen = aoCols.length; i < iLen; i++) {
        if (aoCols[i] && aoCols[i].name) {
          columns[i].sName = aoCols[i].name;
        }
      }
    }

    // Column definitions with aTargets
    if (aoColDefs) {
      /* Loop over the definitions array - loop in reverse so first instance has priority */
      for (i = aoColDefs.length - 1; i >= 0; i--) {
        def = aoColDefs[i];

        /* Each definition can target multiple columns, as it is an array */
        var aTargets = def.target !== undefined ? def.target : def.targets !== undefined ? def.targets : def.aTargets;

        if (!Array.isArray(aTargets)) {
          aTargets = [aTargets];
        }

        for (j = 0, jLen = aTargets.length; j < jLen; j++) {
          var target = aTargets[j];

          if (typeof target === "number" && target >= 0) {
            /* Add columns that we don't yet know about */
            while (columns.length <= target) {
              _fnAddColumn(oSettings);
            }

            /* Integer, basic index */
            fn(target, def);
          } else if (typeof target === "number" && target < 0) {
            /* Negative integer, right to left column counting */
            fn(columns.length + target, def);
          } else if (typeof target === "string") {
            for (k = 0, kLen = columns.length; k < kLen; k++) {
              if (target === "_all") {
                // Apply to all columns
                fn(k, def);
              } else if (target.indexOf(":name") !== -1) {
                // Column selector
                if (columns[k].sName === target.replace(":name", "")) {
                  fn(k, def);
                }
              } else {
                // Cell selector
                headerLayout.forEach(function (row) {
                  var cell = $(row[k].cell);

                  // Legacy support. Note that it means that we don't support
                  // an element name selector only, since they are treated as
                  // class names for 1.x compat.
                  if (target.match(/^[a-z][\w-]*$/i)) {
                    target = "." + target;
                  }

                  if (cell.is(target)) {
                    fn(k, def);
                  }
                });
              }
            }
          }
        }
      }
    }

    // Statically defined columns array
    if (aoCols) {
      for (i = 0, iLen = aoCols.length; i < iLen; i++) {
        fn(i, aoCols[i]);
      }
    }
  }

  /**
   * Get the width for a given set of columns
   *
   * @param {*} settings DataTables settings object
   * @param {*} targets Columns - comma separated string or array of numbers
   * @param {*} original Use the original width (true) or calculated (false)
   * @param {*} incVisible Include visible columns (true) or not (false)
   * @returns Combined CSS value
   */
  function _fnColumnsSumWidth(settings, targets, original, incVisible) {
    if (!Array.isArray(targets)) {
      targets = _fnColumnsFromHeader(targets);
    }

    var sum = 0;
    var unit;
    var columns = settings.aoColumns;

    for (var i = 0, ien = targets.length; i < ien; i++) {
      var column = columns[targets[i]];
      var definedWidth = original ? column.sWidthOrig : column.sWidth;

      if (!incVisible && column.bVisible === false) {
        continue;
      }

      if (definedWidth === null || definedWidth === undefined) {
        return null; // can't determine a defined width - browser defined
      } else if (typeof definedWidth === "number") {
        unit = "px";
        sum += definedWidth;
      } else {
        var matched = definedWidth.match(/([\d\.]+)([^\d]*)/);

        if (matched) {
          sum += matched[1] * 1;
          unit = matched.length === 3 ? matched[2] : "px";
        }
      }
    }

    return sum + unit;
  }

  function _fnColumnsFromHeader(cell) {
    var attr = $(cell).closest("[data-dt-column]").attr("data-dt-column");

    if (!attr) {
      return [];
    }

    return attr.split(",").map(function (val) {
      return val * 1;
    });
  }
  /**
   * Add a data array to the table, creating DOM node etc. This is the parallel to
   * _fnGatherData, but for adding rows from a Javascript source, rather than a
   * DOM source.
   *  @param {object} settings dataTables settings object
   *  @param {array} data data array to be added
   *  @param {node} [tr] TR element to add to the table - optional. If not given,
   *    DataTables will create a row automatically
   *  @param {array} [tds] Array of TD|TH elements for the row - must be given
   *    if nTr is.
   *  @returns {int} >=0 if successful (index of new aoData entry), -1 if failed
   *  @memberof DataTable#oApi
   */
  function _fnAddData(settings, dataIn, tr, tds) {
    /* Create the object for storing information about this new row */
    var rowIdx = settings.aoData.length;
    var rowModel = $.extend(true, {}, DataTable.models.oRow, {
      src: tr ? "dom" : "data",
      idx: rowIdx,
    });

    rowModel._aData = dataIn;
    settings.aoData.push(rowModel);

    var columns = settings.aoColumns;

    for (var i = 0, iLen = columns.length; i < iLen; i++) {
      // Invalidate the column types as the new data needs to be revalidated
      columns[i].sType = null;
    }

    /* Add to the display array */
    settings.aiDisplayMaster.push(rowIdx);

    var id = settings.rowIdFn(dataIn);
    if (id !== undefined) {
      settings.aIds[id] = rowModel;
    }

    /* Create the DOM information, or register it if already present */
    if (tr || !settings.oFeatures.bDeferRender) {
      _fnCreateTr(settings, rowIdx, tr, tds);
    }

    return rowIdx;
  }

  /**
   * Add one or more TR elements to the table. Generally we'd expect to
   * use this for reading data from a DOM sourced table, but it could be
   * used for an TR element. Note that if a TR is given, it is used (i.e.
   * it is not cloned).
   *  @param {object} settings dataTables settings object
   *  @param {array|node|jQuery} trs The TR element(s) to add to the table
   *  @returns {array} Array of indexes for the added rows
   *  @memberof DataTable#oApi
   */
  function _fnAddTr(settings, trs) {
    var row;

    // Allow an individual node to be passed in
    if (!(trs instanceof $)) {
      trs = $(trs);
    }

    return trs.map(function (i, el) {
      row = _fnGetRowElements(settings, el);
      return _fnAddData(settings, row.data, el, row.cells);
    });
  }

  /**
   * Get the data for a given cell from the internal cache, taking into account data mapping
   *  @param {object} settings dataTables settings object
   *  @param {int} rowIdx aoData row id
   *  @param {int} colIdx Column index
   *  @param {string} type data get type ('display', 'type' 'filter|search' 'sort|order')
   *  @returns {*} Cell data
   *  @memberof DataTable#oApi
   */
  function _fnGetCellData(settings, rowIdx, colIdx, type) {
    if (type === "search") {
      type = "filter";
    } else if (type === "order") {
      type = "sort";
    }

    var draw = settings.iDraw;
    var col = settings.aoColumns[colIdx];
    var rowData = settings.aoData[rowIdx]._aData;
    var defaultContent = col.sDefaultContent;
    var cellData = col.fnGetData(rowData, type, {
      settings: settings,
      row: rowIdx,
      col: colIdx,
    });

    // Allow for a node being returned for non-display types
    if (type !== "display" && cellData && typeof cellData === "object" && cellData.nodeName) {
      cellData = cellData.innerHTML;
    }

    if (cellData === undefined) {
      if (settings.iDrawError != draw && defaultContent === null) {
        _fnLog(settings, 0, "Requested unknown parameter " + (typeof col.mData == "function" ? "{function}" : "'" + col.mData + "'") + " for row " + rowIdx + ", column " + colIdx, 4);
        settings.iDrawError = draw;
      }
      return defaultContent;
    }

    // When the data source is null and a specific data type is requested (i.e.
    // not the original data), we can use default column data
    if ((cellData === rowData || cellData === null) && defaultContent !== null && type !== undefined) {
      cellData = defaultContent;
    } else if (typeof cellData === "function") {
      // If the data source is a function, then we run it and use the return,
      // executing in the scope of the data object (for instances)
      return cellData.call(rowData);
    }

    if (cellData === null && type === "display") {
      return "";
    }

    if (type === "filter") {
      var fomatters = DataTable.ext.type.search;

      if (fomatters[col.sType]) {
        cellData = fomatters[col.sType](cellData);
      }
    }

    return cellData;
  }

  /**
   * Set the value for a specific cell, into the internal data cache
   *  @param {object} settings dataTables settings object
   *  @param {int} rowIdx aoData row id
   *  @param {int} colIdx Column index
   *  @param {*} val Value to set
   *  @memberof DataTable#oApi
   */
  function _fnSetCellData(settings, rowIdx, colIdx, val) {
    var col = settings.aoColumns[colIdx];
    var rowData = settings.aoData[rowIdx]._aData;

    col.fnSetData(rowData, val, {
      settings: settings,
      row: rowIdx,
      col: colIdx,
    });
  }

  /**
   * Write a value to a cell
   * @param {*} td Cell
   * @param {*} val Value
   */
  function _fnWriteCell(td, val) {
    if (val && typeof val === "object" && val.nodeName) {
      $(td).empty().append(val);
    } else {
      td.innerHTML = val;
    }
  }

  // Private variable that is used to match action syntax in the data property object
  var __reArray = /\[.*?\]$/;
  var __reFn = /\(\)$/;

  /**
   * Split string on periods, taking into account escaped periods
   * @param  {string} str String to split
   * @return {array} Split string
   */
  function _fnSplitObjNotation(str) {
    var parts = str.match(/(\\.|[^.])+/g) || [""];

    return parts.map(function (s) {
      return s.replace(/\\\./g, ".");
    });
  }

  /**
   * Return a function that can be used to get data from a source object, taking
   * into account the ability to use nested objects as a source
   *  @param {string|int|function} mSource The data source for the object
   *  @returns {function} Data get function
   *  @memberof DataTable#oApi
   */
  var _fnGetObjectDataFn = DataTable.util.get;

  /**
   * Return a function that can be used to set data from a source object, taking
   * into account the ability to use nested objects as a source
   *  @param {string|int|function} mSource The data source for the object
   *  @returns {function} Data set function
   *  @memberof DataTable#oApi
   */
  var _fnSetObjectDataFn = DataTable.util.set;

  /**
   * Return an array with the full table data
   *  @param {object} oSettings dataTables settings object
   *  @returns array {array} aData Master data array
   *  @memberof DataTable#oApi
   */
  function _fnGetDataMaster(settings) {
    return _pluck(settings.aoData, "_aData");
  }

  /**
   * Nuke the table
   *  @param {object} oSettings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnClearTable(settings) {
    settings.aoData.length = 0;
    settings.aiDisplayMaster.length = 0;
    settings.aiDisplay.length = 0;
    settings.aIds = {};
  }

  /**
   * Mark cached data as invalid such that a re-read of the data will occur when
   * the cached data is next requested. Also update from the data source object.
   *
   * @param {object} settings DataTables settings object
   * @param {int}    rowIdx   Row index to invalidate
   * @param {string} [src]    Source to invalidate from: undefined, 'auto', 'dom'
   *     or 'data'
   * @param {int}    [colIdx] Column index to invalidate. If undefined the whole
   *     row will be invalidated
   * @memberof DataTable#oApi
   *
   * @todo For the modularisation of v1.11 this will need to become a callback, so
   *   the sort and filter methods can subscribe to it. That will required
   *   initialisation options for sorting, which is why it is not already baked in
   */
  function _fnInvalidate(settings, rowIdx, src, colIdx) {
    var row = settings.aoData[rowIdx];
    var i, ien;

    // Remove the cached data for the row
    row._aSortData = null;
    row._aFilterData = null;
    row.displayData = null;

    // Are we reading last data from DOM or the data object?
    if (src === "dom" || ((!src || src === "auto") && row.src === "dom")) {
      // Read the data from the DOM
      row._aData = _fnGetRowElements(settings, row, colIdx, colIdx === undefined ? undefined : row._aData).data;
    } else {
      // Reading from data object, update the DOM
      var cells = row.anCells;
      var display = _fnGetRowDisplay(settings, rowIdx);

      if (cells) {
        if (colIdx !== undefined) {
          _fnWriteCell(cells[colIdx], display[colIdx]);
        } else {
          for (i = 0, ien = cells.length; i < ien; i++) {
            _fnWriteCell(cells[i], display[i]);
          }
        }
      }
    }

    // Column specific invalidation
    var cols = settings.aoColumns;
    if (colIdx !== undefined) {
      // Type - the data might have changed
      cols[colIdx].sType = null;

      // Max length string. Its a fairly cheep recalculation, so not worth
      // something more complicated
      cols[colIdx].maxLenString = null;
    } else {
      for (i = 0, ien = cols.length; i < ien; i++) {
        cols[i].sType = null;
        cols[i].maxLenString = null;
      }

      // Update DataTables special `DT_*` attributes for the row
      _fnRowAttributes(settings, row);
    }
  }

  /**
   * Build a data source object from an HTML row, reading the contents of the
   * cells that are in the row.
   *
   * @param {object} settings DataTables settings object
   * @param {node|object} TR element from which to read data or existing row
   *   object from which to re-read the data from the cells
   * @param {int} [colIdx] Optional column index
   * @param {array|object} [d] Data source object. If `colIdx` is given then this
   *   parameter should also be given and will be used to write the data into.
   *   Only the column in question will be written
   * @returns {object} Object with two parameters: `data` the data read, in
   *   document order, and `cells` and array of nodes (they can be useful to the
   *   caller, so rather than needing a second traversal to get them, just return
   *   them from here).
   * @memberof DataTable#oApi
   */
  function _fnGetRowElements(settings, row, colIdx, d) {
    var tds = [],
      td = row.firstChild,
      name,
      col,
      i = 0,
      contents,
      columns = settings.aoColumns,
      objectRead = settings._rowReadObject;

    // Allow the data object to be passed in, or construct
    d = d !== undefined ? d : objectRead ? {} : [];

    var attr = function (str, td) {
      if (typeof str === "string") {
        var idx = str.indexOf("@");

        if (idx !== -1) {
          var attr = str.substring(idx + 1);
          var setter = _fnSetObjectDataFn(str);
          setter(d, td.getAttribute(attr));
        }
      }
    };

    // Read data from a cell and store into the data object
    var cellProcess = function (cell) {
      if (colIdx === undefined || colIdx === i) {
        col = columns[i];
        contents = cell.innerHTML.trim();

        if (col && col._bAttrSrc) {
          var setter = _fnSetObjectDataFn(col.mData._);
          setter(d, contents);

          attr(col.mData.sort, cell);
          attr(col.mData.type, cell);
          attr(col.mData.filter, cell);
        } else {
          // Depending on the `data` option for the columns the data can
          // be read to either an object or an array.
          if (objectRead) {
            if (!col._setter) {
              // Cache the setter function
              col._setter = _fnSetObjectDataFn(col.mData);
            }
            col._setter(d, contents);
          } else {
            d[i] = contents;
          }
        }
      }

      i++;
    };

    if (td) {
      // `tr` element was passed in
      while (td) {
        name = td.nodeName.toUpperCase();

        if (name == "TD" || name == "TH") {
          cellProcess(td);
          tds.push(td);
        }

        td = td.nextSibling;
      }
    } else {
      // Existing row object passed in
      tds = row.anCells;

      for (var j = 0, jen = tds.length; j < jen; j++) {
        cellProcess(tds[j]);
      }
    }

    // Read the ID from the DOM if present
    var rowNode = row.firstChild ? row : row.nTr;

    if (rowNode) {
      var id = rowNode.getAttribute("id");

      if (id) {
        _fnSetObjectDataFn(settings.rowId)(d, id);
      }
    }

    return {
      data: d,
      cells: tds,
    };
  }

  /**
   * Render and cache a row's display data for the columns, if required
   * @returns
   */
  function _fnGetRowDisplay(settings, rowIdx) {
    let rowModal = settings.aoData[rowIdx];
    let columns = settings.aoColumns;

    if (!rowModal.displayData) {
      // Need to render and cache
      rowModal.displayData = [];

      for (var colIdx = 0, len = columns.length; colIdx < len; colIdx++) {
        rowModal.displayData.push(_fnGetCellData(settings, rowIdx, colIdx, "display"));
      }
    }

    return rowModal.displayData;
  }

  /**
   * Create a new TR element (and it's TD children) for a row
   *  @param {object} oSettings dataTables settings object
   *  @param {int} iRow Row to consider
   *  @param {node} [nTrIn] TR element to add to the table - optional. If not given,
   *    DataTables will create a row automatically
   *  @param {array} [anTds] Array of TD|TH elements for the row - must be given
   *    if nTr is.
   *  @memberof DataTable#oApi
   */
  function _fnCreateTr(oSettings, iRow, nTrIn, anTds) {
    var row = oSettings.aoData[iRow],
      rowData = row._aData,
      cells = [],
      nTr,
      nTd,
      oCol,
      i,
      iLen,
      create,
      trClass = oSettings.oClasses.tbody.row;

    if (row.nTr === null) {
      nTr = nTrIn || document.createElement("tr");

      row.nTr = nTr;
      row.anCells = cells;

      _addClass(nTr, trClass);

      /* Use a private property on the node to allow reserve mapping from the node
       * to the aoData array for fast look up
       */
      nTr._DT_RowIndex = iRow;

      /* Special parameters can be given by the data source to be used on the row */
      _fnRowAttributes(oSettings, row);

      /* Process each column */
      for (i = 0, iLen = oSettings.aoColumns.length; i < iLen; i++) {
        oCol = oSettings.aoColumns[i];
        create = nTrIn && anTds[i] ? false : true;

        nTd = create ? document.createElement(oCol.sCellType) : anTds[i];

        if (!nTd) {
          _fnLog(oSettings, 0, "Incorrect column count", 18);
        }

        nTd._DT_CellIndex = {
          row: iRow,
          column: i,
        };

        cells.push(nTd);

        var display = _fnGetRowDisplay(oSettings, iRow);

        // Need to create the HTML if new, or if a rendering function is defined
        if (create || ((oCol.mRender || oCol.mData !== i) && (!$.isPlainObject(oCol.mData) || oCol.mData._ !== i + ".display"))) {
          _fnWriteCell(nTd, display[i]);
        }

        // Visibility - add or remove as required
        if (oCol.bVisible && create) {
          nTr.appendChild(nTd);
        } else if (!oCol.bVisible && !create) {
          nTd.parentNode.removeChild(nTd);
        }

        if (oCol.fnCreatedCell) {
          oCol.fnCreatedCell.call(oSettings.oInstance, nTd, _fnGetCellData(oSettings, iRow, i), rowData, iRow, i);
        }
      }

      _fnCallbackFire(oSettings, "aoRowCreatedCallback", "row-created", [nTr, rowData, iRow, cells]);
    } else {
      _addClass(row.nTr, trClass);
    }
  }

  /**
   * Add attributes to a row based on the special `DT_*` parameters in a data
   * source object.
   *  @param {object} settings DataTables settings object
   *  @param {object} DataTables row object for the row to be modified
   *  @memberof DataTable#oApi
   */
  function _fnRowAttributes(settings, row) {
    var tr = row.nTr;
    var data = row._aData;

    if (tr) {
      var id = settings.rowIdFn(data);

      if (id) {
        tr.id = id;
      }

      if (data.DT_RowClass) {
        // Remove any classes added by DT_RowClass before
        var a = data.DT_RowClass.split(" ");
        row.__rowc = row.__rowc ? _unique(row.__rowc.concat(a)) : a;

        $(tr).removeClass(row.__rowc.join(" ")).addClass(data.DT_RowClass);
      }

      if (data.DT_RowAttr) {
        $(tr).attr(data.DT_RowAttr);
      }

      if (data.DT_RowData) {
        $(tr).data(data.DT_RowData);
      }
    }
  }

  /**
   * Create the HTML header for the table
   *  @param {object} oSettings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnBuildHead(settings, side) {
    var classes = settings.oClasses;
    var columns = settings.aoColumns;
    var i, ien, row;
    var target = side === "header" ? settings.nTHead : settings.nTFoot;
    var titleProp = side === "header" ? "sTitle" : side;

    // Footer might be defined
    if (!target) {
      return;
    }

    // If no cells yet and we have content for them, then create
    if (side === "header" || _pluck(settings.aoColumns, titleProp).join("")) {
      row = $("tr", target);

      // Add a row if needed
      if (!row.length) {
        row = $("<tr/>").appendTo(target);
      }

      // Add the number of cells needed to make up to the number of columns
      if (row.length === 1) {
        var cells = $("td, th", row);

        for (i = cells.length, ien = columns.length; i < ien; i++) {
          $("<th/>")
            .html(columns[i][titleProp] || "")
            .appendTo(row);
        }
      }
    }

    var detected = _fnDetectHeader(settings, target, true);

    if (side === "header") {
      settings.aoHeader = detected;
    } else {
      settings.aoFooter = detected;
    }

    // ARIA role for the rows
    $(target).children("tr").attr("role", "row");

    // Every cell needs to be passed through the renderer
    $(target)
      .children("tr")
      .children("th, td")
      .each(function () {
        _fnRenderer(settings, side)(settings, $(this), classes);
      });
  }

  /**
   * Build a layout structure for a header or footer
   *
   * @param {*} settings DataTables settings
   * @param {*} source Source layout array
   * @param {*} incColumns What columns should be included
   * @returns Layout array
   */
  function _fnHeaderLayout(settings, source, incColumns) {
    var row, column, cell;
    var local = [];
    var structure = [];
    var columns = settings.aoColumns;
    var columnCount = columns.length;
    var rowspan, colspan;

    if (!source) {
      return;
    }

    // Default is to work on only visible columns
    if (!incColumns) {
      incColumns = _range(columnCount).filter(function (idx) {
        return columns[idx].bVisible;
      });
    }

    // Make a copy of the master layout array, but with only the columns we want
    for (row = 0; row < source.length; row++) {
      // Remove any columns we haven't selected
      local[row] = source[row].slice().filter(function (cell, i) {
        return incColumns.includes(i);
      });

      // Prep the structure array - it needs an element for each row
      structure.push([]);
    }

    for (row = 0; row < local.length; row++) {
      for (column = 0; column < local[row].length; column++) {
        rowspan = 1;
        colspan = 1;

        // Check to see if there is already a cell (row/colspan) covering our target
        // insert point. If there is, then there is nothing to do.
        if (structure[row][column] === undefined) {
          cell = local[row][column].cell;

          // Expand for rowspan
          while (local[row + rowspan] !== undefined && local[row][column].cell == local[row + rowspan][column].cell) {
            structure[row + rowspan][column] = null;
            rowspan++;
          }

          // And for colspan
          while (local[row][column + colspan] !== undefined && local[row][column].cell == local[row][column + colspan].cell) {
            // Which also needs to go over rows
            for (var k = 0; k < rowspan; k++) {
              structure[row + k][column + colspan] = null;
            }

            colspan++;
          }

          structure[row][column] = {
            cell: cell,
            colspan: colspan,
            rowspan: rowspan,
            title: $("span.dt-column-title", cell).html(),
          };
        }
      }
    }

    return structure;
  }

  /**
   * Draw the header (or footer) element based on the column visibility states.
   *
   *  @param object oSettings dataTables settings object
   *  @param array aoSource Layout array from _fnDetectHeader
   *  @memberof DataTable#oApi
   */
  function _fnDrawHead(settings, source) {
    var layout = _fnHeaderLayout(settings, source);
    var tr, n;

    for (var row = 0; row < source.length; row++) {
      tr = source[row].row;

      // All cells are going to be replaced, so empty out the row
      // Can't use $().empty() as that kills event handlers
      if (tr) {
        while ((n = tr.firstChild)) {
          tr.removeChild(n);
        }
      }

      for (var column = 0; column < layout[row].length; column++) {
        var point = layout[row][column];

        if (point) {
          $(point.cell).appendTo(tr).attr("rowspan", point.rowspan).attr("colspan", point.colspan);
        }
      }
    }
  }

  /**
   * Insert the required TR nodes into the table for display
   *  @param {object} oSettings dataTables settings object
   *  @param ajaxComplete true after ajax call to complete rendering
   *  @memberof DataTable#oApi
   */
  function _fnDraw(oSettings, ajaxComplete) {
    // Allow for state saving and a custom start position
    _fnStart(oSettings);

    /* Provide a pre-callback function which can be used to cancel the draw is false is returned */
    var aPreDraw = _fnCallbackFire(oSettings, "aoPreDrawCallback", "preDraw", [oSettings]);
    if (aPreDraw.indexOf(false) !== -1) {
      _fnProcessingDisplay(oSettings, false);
      return;
    }

    var anRows = [];
    var iRowCount = 0;
    var bServerSide = _fnDataSource(oSettings) == "ssp";
    var aiDisplay = oSettings.aiDisplay;
    var iDisplayStart = oSettings._iDisplayStart;
    var iDisplayEnd = oSettings.fnDisplayEnd();
    var columns = oSettings.aoColumns;
    var body = $(oSettings.nTBody);

    oSettings.bDrawing = true;

    /* Server-side processing draw intercept */
    if (!bServerSide) {
      oSettings.iDraw++;
    } else if (!oSettings.bDestroying && !ajaxComplete) {
      // Show loading message for server-side processing
      if (oSettings.iDraw === 0) {
        body.empty().append(_emptyRow(oSettings));
      }

      _fnAjaxUpdate(oSettings);
      return;
    }

    if (aiDisplay.length !== 0) {
      var iStart = bServerSide ? 0 : iDisplayStart;
      var iEnd = bServerSide ? oSettings.aoData.length : iDisplayEnd;

      for (var j = iStart; j < iEnd; j++) {
        var iDataIndex = aiDisplay[j];
        var aoData = oSettings.aoData[iDataIndex];
        if (aoData.nTr === null) {
          _fnCreateTr(oSettings, iDataIndex);
        }

        var nRow = aoData.nTr;

        // Add various classes as needed
        for (var i = 0; i < columns.length; i++) {
          var col = columns[i];
          var td = aoData.anCells[i];

          _addClass(td, _ext.type.className[col.sType]); // auto class
          _addClass(td, col.sClass); // column class
          _addClass(td, oSettings.oClasses.tbody.cell); // all cells
        }

        // Row callback functions - might want to manipulate the row
        // iRowCount and j are not currently documented. Are they at all
        // useful?
        _fnCallbackFire(oSettings, "aoRowCallback", null, [nRow, aoData._aData, iRowCount, j, iDataIndex]);

        anRows.push(nRow);
        iRowCount++;
      }
    } else {
      anRows[0] = _emptyRow(oSettings);
    }

    /* Header and footer callbacks */
    _fnCallbackFire(oSettings, "aoHeaderCallback", "header", [$(oSettings.nTHead).children("tr")[0], _fnGetDataMaster(oSettings), iDisplayStart, iDisplayEnd, aiDisplay]);

    _fnCallbackFire(oSettings, "aoFooterCallback", "footer", [$(oSettings.nTFoot).children("tr")[0], _fnGetDataMaster(oSettings), iDisplayStart, iDisplayEnd, aiDisplay]);

    body.children().detach();
    body.append($(anRows));

    // Empty table needs a specific class
    $(oSettings.nTableWrapper).toggleClass("dt-empty-footer", $("tr", oSettings.nTFoot).length === 0);

    /* Call all required callback functions for the end of a draw */
    _fnCallbackFire(oSettings, "aoDrawCallback", "draw", [oSettings], true);

    /* Draw is complete, sorting and filtering must be as well */
    oSettings.bSorted = false;
    oSettings.bFiltered = false;
    oSettings.bDrawing = false;
  }

  /**
   * Redraw the table - taking account of the various features which are enabled
   *  @param {object} oSettings dataTables settings object
   *  @param {boolean} [holdPosition] Keep the current paging position. By default
   *    the paging is reset to the first page
   *  @memberof DataTable#oApi
   */
  function _fnReDraw(settings, holdPosition, recompute) {
    var features = settings.oFeatures,
      sort = features.bSort,
      filter = features.bFilter;

    if (recompute === undefined || recompute === true) {
      if (sort) {
        _fnSort(settings);
      }

      if (filter) {
        _fnFilterComplete(settings, settings.oPreviousSearch);
      } else {
        // No filtering, so we want to just use the display master
        settings.aiDisplay = settings.aiDisplayMaster.slice();
      }
    }

    if (holdPosition !== true) {
      settings._iDisplayStart = 0;
    }

    // Let any modules know about the draw hold position state (used by
    // scrolling internally)
    settings._drawHold = holdPosition;

    _fnDraw(settings);

    settings._drawHold = false;
  }

  /*
   * Table is empty - create a row with an empty message in it
   */
  function _emptyRow(settings) {
    var oLang = settings.oLanguage;
    var zero = oLang.sZeroRecords;
    var dataSrc = _fnDataSource(settings);

    if ((settings.iDraw < 1 && dataSrc === "ssp") || (settings.iDraw <= 1 && dataSrc === "ajax")) {
      zero = oLang.sLoadingRecords;
    } else if (oLang.sEmptyTable && settings.fnRecordsTotal() === 0) {
      zero = oLang.sEmptyTable;
    }

    return $("<tr/>").append(
      $("<td />", {
        colSpan: _fnVisbleColumns(settings),
        class: settings.oClasses.empty.row,
      }).html(zero)
    )[0];
  }

  /**
   * Convert a `layout` object given by a user to the object structure needed
   * for the renderer. This is done twice, once for above and once for below
   * the table. Ordering must also be considered.
   *
   * @param {*} settings DataTables settings object
   * @param {*} layout Layout object to convert
   * @param {string} side `top` or `bottom`
   * @returns Converted array structure - one item for each row.
   */
  function _layoutArray(settings, layout, side) {
    var groups = {};

    // Combine into like groups (e.g. `top`, `top2`, etc)
    $.each(layout, function (pos, val) {
      if (val === null) {
        return;
      }

      var splitPos = pos.replace(/([A-Z])/g, " $1").split(" ");

      if (!groups[splitPos[0]]) {
        groups[splitPos[0]] = {};
      }

      var align = splitPos.length === 1 ? "full" : splitPos[1].toLowerCase();
      var group = groups[splitPos[0]];
      var groupRun = function (contents, innerVal) {
        // If it is an object, then there can be multiple features contained in it
        if ($.isPlainObject(innerVal)) {
          Object.keys(innerVal).map(function (key) {
            contents.push({
              feature: key,
              opts: innerVal[key],
            });
          });
        } else {
          contents.push(innerVal);
        }
      };

      // Transform to an object with a contents property
      if (!group[align] || !group[align].contents) {
        group[align] = { contents: [] };
      }

      // Allow for an array or just a single object
      if (Array.isArray(val)) {
        for (var i = 0; i < val.length; i++) {
          groupRun(group[align].contents, val[i]);
        }
      } else {
        groupRun(group[align].contents, val);
      }

      // And make contents an array
      if (!Array.isArray(group[align].contents)) {
        group[align].contents = [group[align].contents];
      }
    });

    var filtered = Object.keys(groups)
      .map(function (pos) {
        // Filter to only the side we need
        if (pos.indexOf(side) !== 0) {
          return null;
        }

        return {
          name: pos,
          val: groups[pos],
        };
      })
      .filter(function (item) {
        return item !== null;
      });

    // Order by item identifier
    filtered.sort(function (a, b) {
      var order1 = a.name.replace(/[^0-9]/g, "") * 1;
      var order2 = b.name.replace(/[^0-9]/g, "") * 1;

      return order2 - order1;
    });

    if (side === "bottom") {
      filtered.reverse();
    }

    // Split into rows
    var rows = [];
    for (var i = 0, ien = filtered.length; i < ien; i++) {
      if (filtered[i].val.full) {
        rows.push({ full: filtered[i].val.full });
        _layoutResolve(settings, rows[rows.length - 1]);

        delete filtered[i].val.full;
      }

      if (Object.keys(filtered[i].val).length) {
        rows.push(filtered[i].val);
        _layoutResolve(settings, rows[rows.length - 1]);
      }
    }

    return rows;
  }

  /**
   * Convert the contents of a row's layout object to nodes that can be inserted
   * into the document by a renderer. Execute functions, look up plug-ins, etc.
   *
   * @param {*} settings DataTables settings object
   * @param {*} row Layout object for this row
   */
  function _layoutResolve(settings, row) {
    var getFeature = function (feature, opts) {
      if (!_ext.features[feature]) {
        _fnLog(settings, 0, "Unknown feature: " + feature);
      }

      return _ext.features[feature].apply(this, [settings, opts]);
    };

    var resolve = function (item) {
      var line = row[item].contents;

      for (var i = 0, ien = line.length; i < ien; i++) {
        if (!line[i]) {
          continue;
        } else if (typeof line[i] === "string") {
          line[i] = getFeature(line[i], null);
        } else if ($.isPlainObject(line[i])) {
          // If it's an object, it just has feature and opts properties from
          // the transform in _layoutArray
          line[i] = getFeature(line[i].feature, line[i].opts);
        } else if (typeof line[i].node === "function") {
          line[i] = line[i].node(settings);
        } else if (typeof line[i] === "function") {
          var inst = line[i](settings);

          line[i] = typeof inst.node === "function" ? inst.node() : inst;
        }
      }
    };

    $.each(row, function (key) {
      resolve(key);
    });
  }

  /**
   * Add the options to the page HTML for the table
   *  @param {object} settings DataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnAddOptionsHtml(settings) {
    var classes = settings.oClasses;
    var table = $(settings.nTable);

    // Wrapper div around everything DataTables controls
    var insert = $("<div/>")
      .attr({
        id: settings.sTableId + "_wrapper",
        class: classes.container,
      })
      .insertBefore(table);

    settings.nTableWrapper = insert[0];

    var top = _layoutArray(settings, settings.layout, "top");
    var bottom = _layoutArray(settings, settings.layout, "bottom");
    var renderer = _fnRenderer(settings, "layout");

    if (settings.sDom) {
      // Legacy
      _fnLayoutDom(settings, settings.sDom, insert);
    } else {
      // Everything above - the renderer will actually insert the contents into the document
      top.forEach(function (item) {
        renderer(settings, insert, item);
      });

      // The table - always the center of attention
      renderer(settings, insert, {
        full: {
          table: true,
          contents: [_fnFeatureHtmlTable(settings)],
        },
      });

      // Everything below
      bottom.forEach(function (item) {
        renderer(settings, insert, item);
      });
    }

    // Processing floats on top, so it isn't an inserted feature
    _processingHtml(settings);
  }

  /**
   * Draw the table with the legacy DOM property
   * @param {*} settings DT settings object
   * @param {*} dom DOM string
   * @param {*} insert Insert point
   */
  function _fnLayoutDom(settings, dom, insert) {
    var parts = dom.match(/(".*?")|('.*?')|./g);
    var featureNode, option, newNode, next, attr;

    for (var i = 0; i < parts.length; i++) {
      featureNode = null;
      option = parts[i];

      if (option == "<") {
        // New container div
        newNode = $("<div/>");

        // Check to see if we should append an id and/or a class name to the container
        next = parts[i + 1];

        if (next[0] == "'" || next[0] == '"') {
          attr = next.replace(/['"]/g, "");

          var id = "",
            className;

          /* The attribute can be in the format of "#id.class", "#id" or "class" This logic
           * breaks the string into parts and applies them as needed
           */
          if (attr.indexOf(".") != -1) {
            var split = attr.split(".");

            id = split[0];
            className = split[1];
          } else if (attr[0] == "#") {
            id = attr;
          } else {
            className = attr;
          }

          newNode.attr("id", id.substring(1)).addClass(className);

          i++; // Move along the position array
        }

        insert.append(newNode);
        insert = newNode;
      } else if (option == ">") {
        // End container div
        insert = insert.parent();
      } else if (option == "t") {
        // Table
        featureNode = _fnFeatureHtmlTable(settings);
      } else {
        DataTable.ext.feature.forEach(function (feature) {
          if (option == feature.cFeature) {
            featureNode = feature.fnInit(settings);
          }
        });
      }

      // Add to the display
      if (featureNode) {
        insert.append(featureNode);
      }
    }
  }

  /**
   * Use the DOM source to create up an array of header cells. The idea here is to
   * create a layout grid (array) of rows x columns, which contains a reference
   * to the cell that that point in the grid (regardless of col/rowspan), such that
   * any column / row could be removed and the new grid constructed
   *  @param {node} thead The header/footer element for the table
   *  @returns {array} Calculated layout array
   *  @memberof DataTable#oApi
   */
  function _fnDetectHeader(settings, thead, write) {
    var columns = settings.aoColumns;
    var rows = $(thead).children("tr");
    var row, cell;
    var i, k, l, iLen, shifted, column, colspan, rowspan;
    var isHeader = thead && thead.nodeName.toLowerCase() === "thead";
    var layout = [];
    var unique;
    var shift = function (a, i, j) {
      var k = a[i];
      while (k[j]) {
        j++;
      }
      return j;
    };

    // We know how many rows there are in the layout - so prep it
    for (i = 0, iLen = rows.length; i < iLen; i++) {
      layout.push([]);
    }

    for (i = 0, iLen = rows.length; i < iLen; i++) {
      row = rows[i];
      column = 0;

      // For every cell in the row..
      cell = row.firstChild;
      while (cell) {
        if (cell.nodeName.toUpperCase() == "TD" || cell.nodeName.toUpperCase() == "TH") {
          var cols = [];

          // Get the col and rowspan attributes from the DOM and sanitise them
          colspan = cell.getAttribute("colspan") * 1;
          rowspan = cell.getAttribute("rowspan") * 1;
          colspan = !colspan || colspan === 0 || colspan === 1 ? 1 : colspan;
          rowspan = !rowspan || rowspan === 0 || rowspan === 1 ? 1 : rowspan;

          // There might be colspan cells already in this row, so shift our target
          // accordingly
          shifted = shift(layout, i, column);

          // Cache calculation for unique columns
          unique = colspan === 1 ? true : false;

          // Perform header setup
          if (write) {
            if (unique) {
              // Allow column options to be set from HTML attributes
              _fnColumnOptions(settings, shifted, $(cell).data());

              // Get the width for the column. This can be defined from the
              // width attribute, style attribute or `columns.width` option
              var columnDef = columns[shifted];
              var width = cell.getAttribute("width") || null;
              var t = cell.style.width.match(/width:\s*(\d+[pxem%]+)/);
              if (t) {
                width = t[1];
              }

              columnDef.sWidthOrig = columnDef.sWidth || width;

              if (isHeader) {
                // Column title handling - can be user set, or read from the DOM
                // This happens before the render, so the original is still in place
                if (columnDef.sTitle !== null && !columnDef.autoTitle) {
                  cell.innerHTML = columnDef.sTitle;
                }

                if (!columnDef.sTitle && unique) {
                  columnDef.sTitle = cell.innerHTML.replace(/<.*?>/g, "");
                  columnDef.autoTitle = true;
                }
              } else {
                // Footer specific operations
                if (columnDef.footer) {
                  cell.innerHTML = columnDef.footer;
                }
              }

              // Fall back to the aria-label attribute on the table header if no ariaTitle is
              // provided.
              if (!columnDef.ariaTitle) {
                columnDef.ariaTitle = $(cell).attr("aria-label") || columnDef.sTitle;
              }

              // Column specific class names
              if (columnDef.className) {
                $(cell).addClass(columnDef.className);
              }
            }

            // Wrap the column title so we can write to it in future
            if ($("span.dt-column-title", cell).length === 0) {
              $("<span>").addClass("dt-column-title").append(cell.childNodes).appendTo(cell);
            }

            if (isHeader && $("span.dt-column-order", cell).length === 0) {
              $("<span>").addClass("dt-column-order").appendTo(cell);
            }
          }

          // If there is col / rowspan, copy the information into the layout grid
          for (l = 0; l < colspan; l++) {
            for (k = 0; k < rowspan; k++) {
              layout[i + k][shifted + l] = {
                cell: cell,
                unique: unique,
              };

              layout[i + k].row = row;
            }

            cols.push(shifted + l);
          }

          // Assign an attribute so spanning cells can still be identified
          // as belonging to a column
          cell.setAttribute("data-dt-column", _unique(cols).join(","));
        }

        cell = cell.nextSibling;
      }
    }

    return layout;
  }

  /**
   * Set the start position for draw
   *  @param {object} oSettings dataTables settings object
   */
  function _fnStart(oSettings) {
    var bServerSide = _fnDataSource(oSettings) == "ssp";
    var iInitDisplayStart = oSettings.iInitDisplayStart;

    // Check and see if we have an initial draw position from state saving
    if (iInitDisplayStart !== undefined && iInitDisplayStart !== -1) {
      oSettings._iDisplayStart = bServerSide ? iInitDisplayStart : iInitDisplayStart >= oSettings.fnRecordsDisplay() ? 0 : iInitDisplayStart;

      oSettings.iInitDisplayStart = -1;
    }
  }

  /**
   * Create an Ajax call based on the table's settings, taking into account that
   * parameters can have multiple forms, and backwards compatibility.
   *
   * @param {object} oSettings dataTables settings object
   * @param {array} data Data to send to the server, required by
   *     DataTables - may be augmented by developer callbacks
   * @param {function} fn Callback function to run when data is obtained
   */
  function _fnBuildAjax(oSettings, data, fn) {
    var ajaxData;
    var ajax = oSettings.ajax;
    var instance = oSettings.oInstance;
    var callback = function (json) {
      var status = oSettings.jqXHR ? oSettings.jqXHR.status : null;

      if (json === null || (typeof status === "number" && status == 204)) {
        json = {};
        _fnAjaxDataSrc(oSettings, json, []);
      }

      var error = json.error || json.sError;
      if (error) {
        _fnLog(oSettings, 0, error);
      }

      oSettings.json = json;

      _fnCallbackFire(oSettings, null, "xhr", [oSettings, json, oSettings.jqXHR], true);
      fn(json);
    };

    if ($.isPlainObject(ajax) && ajax.data) {
      ajaxData = ajax.data;

      var newData =
        typeof ajaxData === "function"
          ? ajaxData(data, oSettings) // fn can manipulate data or return
          : ajaxData; // an object object or array to merge

      // If the function returned something, use that alone
      data = typeof ajaxData === "function" && newData ? newData : $.extend(true, data, newData);

      // Remove the data property as we've resolved it already and don't want
      // jQuery to do it again (it is restored at the end of the function)
      delete ajax.data;
    }

    var baseAjax = {
      url: typeof ajax === "string" ? ajax : "",
      data: data,
      success: callback,
      dataType: "json",
      cache: false,
      type: oSettings.sServerMethod,
      error: function (xhr, error) {
        var ret = _fnCallbackFire(oSettings, null, "xhr", [oSettings, null, oSettings.jqXHR], true);

        if (ret.indexOf(true) === -1) {
          if (error == "parsererror") {
            _fnLog(oSettings, 0, "Invalid JSON response", 1);
          } else if (xhr.readyState === 4) {
            _fnLog(oSettings, 0, "Ajax error", 7);
          }
        }

        _fnProcessingDisplay(oSettings, false);
      },
    };

    // If `ajax` option is an object, extend and override our default base
    if ($.isPlainObject(ajax)) {
      $.extend(baseAjax, ajax);
    }

    // Store the data submitted for the API
    oSettings.oAjaxData = data;

    // Allow plug-ins and external processes to modify the data
    _fnCallbackFire(oSettings, null, "preXhr", [oSettings, data, baseAjax], true);

    if (typeof ajax === "function") {
      // Is a function - let the caller define what needs to be done
      oSettings.jqXHR = ajax.call(instance, data, callback, oSettings);
    } else if (ajax.url === "") {
      callback({});
    } else {
      // Object to extend the base settings
      oSettings.jqXHR = $.ajax(baseAjax);

      // Restore for next time around
      if (ajaxData) {
        ajax.data = ajaxData;
      }
    }
  }

  /**
   * Update the table using an Ajax call
   *  @param {object} settings dataTables settings object
   *  @returns {boolean} Block the table drawing or not
   *  @memberof DataTable#oApi
   */
  function _fnAjaxUpdate(settings) {
    settings.iDraw++;
    _fnProcessingDisplay(settings, true);

    _fnBuildAjax(settings, _fnAjaxParameters(settings), function (json) {
      _fnAjaxUpdateDraw(settings, json);
    });
  }

  /**
   * Build up the parameters in an object needed for a server-side processing
   * request.
   *  @param {object} oSettings dataTables settings object
   *  @returns {bool} block the table drawing or not
   *  @memberof DataTable#oApi
   */
  function _fnAjaxParameters(settings) {
    var columns = settings.aoColumns,
      features = settings.oFeatures,
      preSearch = settings.oPreviousSearch,
      preColSearch = settings.aoPreSearchCols,
      colData = function (idx, prop) {
        return typeof columns[idx][prop] === "function" ? "function" : columns[idx][prop];
      };

    return {
      draw: settings.iDraw,
      columns: columns.map(function (column, i) {
        return {
          data: colData(i, "mData"),
          name: column.sName,
          searchable: column.bSearchable,
          orderable: column.bSortable,
          search: {
            value: preColSearch[i].search,
            regex: preColSearch[i].regex,
            fixed: Object.keys(column.searchFixed).map(function (name) {
              return {
                name: name,
                term: column.searchFixed[name].toString(),
              };
            }),
          },
        };
      }),
      order: _fnSortFlatten(settings).map(function (val) {
        return {
          column: val.col,
          dir: val.dir,
          name: colData(val.col, "sName"),
        };
      }),
      start: settings._iDisplayStart,
      length: features.bPaginate ? settings._iDisplayLength : -1,
      search: {
        value: preSearch.search,
        regex: preSearch.regex,
        fixed: Object.keys(settings.searchFixed).map(function (name) {
          return {
            name: name,
            term: settings.searchFixed[name].toString(),
          };
        }),
      },
    };
  }

  /**
   * Data the data from the server (nuking the old) and redraw the table
   *  @param {object} oSettings dataTables settings object
   *  @param {object} json json data return from the server.
   *  @param {string} json.sEcho Tracking flag for DataTables to match requests
   *  @param {int} json.iTotalRecords Number of records in the data set, not accounting for filtering
   *  @param {int} json.iTotalDisplayRecords Number of records in the data set, accounting for filtering
   *  @param {array} json.aaData The data to display on this page
   *  @param {string} [json.sColumns] Column ordering (sName, comma separated)
   *  @memberof DataTable#oApi
   */
  function _fnAjaxUpdateDraw(settings, json) {
    var data = _fnAjaxDataSrc(settings, json);
    var draw = _fnAjaxDataSrcParam(settings, "draw", json);
    var recordsTotal = _fnAjaxDataSrcParam(settings, "recordsTotal", json);
    var recordsFiltered = _fnAjaxDataSrcParam(settings, "recordsFiltered", json);

    if (draw !== undefined) {
      // Protect against out of sequence returns
      if (draw * 1 < settings.iDraw) {
        return;
      }
      settings.iDraw = draw * 1;
    }

    // No data in returned object, so rather than an array, we show an empty table
    if (!data) {
      data = [];
    }

    _fnClearTable(settings);
    settings._iRecordsTotal = parseInt(recordsTotal, 10);
    settings._iRecordsDisplay = parseInt(recordsFiltered, 10);

    for (var i = 0, ien = data.length; i < ien; i++) {
      _fnAddData(settings, data[i]);
    }
    settings.aiDisplay = settings.aiDisplayMaster.slice();

    _fnDraw(settings, true);
    _fnInitComplete(settings);
    _fnProcessingDisplay(settings, false);
  }

  /**
   * Get the data from the JSON data source to use for drawing a table. Using
   * `_fnGetObjectDataFn` allows the data to be sourced from a property of the
   * source object, or from a processing function.
   *  @param {object} settings dataTables settings object
   *  @param  {object} json Data source object / array from the server
   *  @return {array} Array of data to use
   */
  function _fnAjaxDataSrc(settings, json, write) {
    var dataProp = "data";

    if ($.isPlainObject(settings.ajax) && settings.ajax.dataSrc !== undefined) {
      // Could in inside a `dataSrc` object, or not!
      var dataSrc = settings.ajax.dataSrc;

      // string, function and object are valid types
      if (typeof dataSrc === "string" || typeof dataSrc === "function") {
        dataProp = dataSrc;
      } else if (dataSrc.data !== undefined) {
        dataProp = dataSrc.data;
      }
    }

    if (!write) {
      if (dataProp === "data") {
        // If the default, then we still want to support the old style, and safely ignore
        // it if possible
        return json.aaData || json[dataProp];
      }

      return dataProp !== "" ? _fnGetObjectDataFn(dataProp)(json) : json;
    }

    // set
    _fnSetObjectDataFn(dataProp)(json, write);
  }

  /**
   * Very similar to _fnAjaxDataSrc, but for the other SSP properties
   * @param {*} settings DataTables settings object
   * @param {*} param Target parameter
   * @param {*} json JSON data
   * @returns Resolved value
   */
  function _fnAjaxDataSrcParam(settings, param, json) {
    var dataSrc = $.isPlainObject(settings.ajax) ? settings.ajax.dataSrc : null;

    if (dataSrc && dataSrc[param]) {
      // Get from custom location
      return _fnGetObjectDataFn(dataSrc[param])(json);
    }

    // else - Default behaviour
    var old = "";

    // Legacy support
    if (param === "draw") {
      old = "sEcho";
    } else if (param === "recordsTotal") {
      old = "iTotalRecords";
    } else if (param === "recordsFiltered") {
      old = "iTotalDisplayRecords";
    }

    return json[old] !== undefined ? json[old] : json[param];
  }

  /**
   * Filter the table using both the global filter and column based filtering
   *  @param {object} settings dataTables settings object
   *  @param {object} input search information
   *  @memberof DataTable#oApi
   */
  function _fnFilterComplete(settings, input) {
    var columnsSearch = settings.aoPreSearchCols;

    // Resolve any column types that are unknown due to addition or invalidation
    // @todo As per sort - can this be moved into an event handler?
    _fnColumnTypes(settings);

    // In server-side processing all filtering is done by the server, so no point hanging around here
    if (_fnDataSource(settings) != "ssp") {
      // Check if any of the rows were invalidated
      _fnFilterData(settings);

      // Start from the full data set
      settings.aiDisplay = settings.aiDisplayMaster.slice();

      // Global filter first
      _fnFilter(settings.aiDisplay, settings, input.search, input);

      $.each(settings.searchFixed, function (name, term) {
        _fnFilter(settings.aiDisplay, settings, term, {});
      });

      // Then individual column filters
      for (var i = 0; i < columnsSearch.length; i++) {
        var col = columnsSearch[i];

        _fnFilter(settings.aiDisplay, settings, col.search, col, i);

        $.each(settings.aoColumns[i].searchFixed, function (name, term) {
          _fnFilter(settings.aiDisplay, settings, term, {}, i);
        });
      }

      // And finally global filtering
      _fnFilterCustom(settings);
    }

    // Tell the draw function we have been filtering
    settings.bFiltered = true;

    _fnCallbackFire(settings, null, "search", [settings]);
  }

  /**
   * Apply custom filtering functions
   *
   * This is legacy now that we have named functions, but it is widely used
   * from 1.x, so it is not yet deprecated.
   *  @param {object} oSettings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnFilterCustom(settings) {
    var filters = DataTable.ext.search;
    var displayRows = settings.aiDisplay;
    var row, rowIdx;

    for (var i = 0, ien = filters.length; i < ien; i++) {
      var rows = [];

      // Loop over each row and see if it should be included
      for (var j = 0, jen = displayRows.length; j < jen; j++) {
        rowIdx = displayRows[j];
        row = settings.aoData[rowIdx];

        if (filters[i](settings, row._aFilterData, rowIdx, row._aData, j)) {
          rows.push(rowIdx);
        }
      }

      // So the array reference doesn't break set the results into the
      // existing array
      displayRows.length = 0;
      displayRows.push.apply(displayRows, rows);
    }
  }

  /**
   * Filter the data table based on user input and draw the table
   */
  function _fnFilter(searchRows, settings, input, options, column) {
    if (input === "") {
      return;
    }

    var i = 0;

    // Search term can be a function, regex or string - if a string we apply our
    // smart filtering regex (assuming the options require that)
    var searchFunc = typeof input === "function" ? input : null;
    var rpSearch = input instanceof RegExp ? input : searchFunc ? null : _fnFilterCreateSearch(input, options);

    // Then for each row, does the test pass. If not, lop the row from the array
    while (i < searchRows.length) {
      var row = settings.aoData[searchRows[i]];
      var data = column === undefined ? row._sFilterRow : row._aFilterData[column];

      if ((searchFunc && !searchFunc(data, row._aData, searchRows[i], column)) || (rpSearch && !rpSearch.test(data))) {
        searchRows.splice(i, 1);
        i--;
      }

      i++;
    }
  }

  /**
   * Build a regular expression object suitable for searching a table
   *  @param {string} sSearch string to search for
   *  @param {bool} bRegex treat as a regular expression or not
   *  @param {bool} bSmart perform smart filtering or not
   *  @param {bool} bCaseInsensitive Do case insensitive matching or not
   *  @returns {RegExp} constructed object
   *  @memberof DataTable#oApi
   */
  function _fnFilterCreateSearch(search, inOpts) {
    var not = [];
    var options = $.extend(
      {},
      {
        boundary: false,
        caseInsensitive: true,
        exact: false,
        regex: false,
        smart: true,
      },
      inOpts
    );

    if (typeof search !== "string") {
      search = search.toString();
    }

    // Remove diacritics if normalize is set up to do so
    search = _normalize(search);

    if (options.exact) {
      return new RegExp("^" + _fnEscapeRegex(search) + "$", options.caseInsensitive ? "i" : "");
    }

    search = options.regex ? search : _fnEscapeRegex(search);

    if (options.smart) {
      /* For smart filtering we want to allow the search to work regardless of
       * word order. We also want double quoted text to be preserved, so word
       * order is important - a la google. And a negative look around for
       * finding rows which don't contain a given string.
       *
       * So this is the sort of thing we want to generate:
       *
       * ^(?=.*?\bone\b)(?=.*?\btwo three\b)(?=.*?\bfour\b).*$
       */
      var parts = search.match(/!?["\u201C][^"\u201D]+["\u201D]|[^ ]+/g) || [""];
      var a = parts.map(function (word) {
        var negative = false;
        var m;

        // Determine if it is a "does not include"
        if (word.charAt(0) === "!") {
          negative = true;
          word = word.substring(1);
        }

        // Strip the quotes from around matched phrases
        if (word.charAt(0) === '"') {
          m = word.match(/^"(.*)"$/);
          word = m ? m[1] : word;
        } else if (word.charAt(0) === "\u201C") {
          // Smart quote match (iPhone users)
          m = word.match(/^\u201C(.*)\u201D$/);
          word = m ? m[1] : word;
        }

        // For our "not" case, we need to modify the string that is
        // allowed to match at the end of the expression.
        if (negative) {
          if (word.length > 1) {
            not.push("(?!" + word + ")");
          }

          word = "";
        }

        return word.replace('"', "");
      });

      var match = not.length ? not.join("") : "";

      var boundary = options.boundary ? "\\b" : "";

      search = "^(?=.*?" + boundary + a.join(")(?=.*?" + boundary) + ")(" + match + ".)*$";
    }

    return new RegExp(search, options.caseInsensitive ? "i" : "");
  }

  /**
   * Escape a string such that it can be used in a regular expression
   *  @param {string} sVal string to escape
   *  @returns {string} escaped string
   *  @memberof DataTable#oApi
   */
  var _fnEscapeRegex = DataTable.util.escapeRegex;

  var __filter_div = $("<div>")[0];
  var __filter_div_textContent = __filter_div.textContent !== undefined;

  // Update the filtering data for each row if needed (by invalidation or first run)
  function _fnFilterData(settings) {
    var columns = settings.aoColumns;
    var data = settings.aoData;
    var column;
    var j, jen, filterData, cellData, row;
    var wasInvalidated = false;

    for (var rowIdx = 0; rowIdx < data.length; rowIdx++) {
      if (!data[rowIdx]) {
        continue;
      }

      row = data[rowIdx];

      if (!row._aFilterData) {
        filterData = [];

        for (j = 0, jen = columns.length; j < jen; j++) {
          column = columns[j];

          if (column.bSearchable) {
            cellData = _fnGetCellData(settings, rowIdx, j, "filter");

            // Search in DataTables is string based
            if (cellData === null) {
              cellData = "";
            }

            if (typeof cellData !== "string" && cellData.toString) {
              cellData = cellData.toString();
            }
          } else {
            cellData = "";
          }

          // If it looks like there is an HTML entity in the string,
          // attempt to decode it so sorting works as expected. Note that
          // we could use a single line of jQuery to do this, but the DOM
          // method used here is much faster https://jsperf.com/html-decode
          if (cellData.indexOf && cellData.indexOf("&") !== -1) {
            __filter_div.innerHTML = cellData;
            cellData = __filter_div_textContent ? __filter_div.textContent : __filter_div.innerText;
          }

          if (cellData.replace) {
            cellData = cellData.replace(/[\r\n\u2028]/g, "");
          }

          filterData.push(cellData);
        }

        row._aFilterData = filterData;
        row._sFilterRow = filterData.join("  ");
        wasInvalidated = true;
      }
    }

    return wasInvalidated;
  }

  /**
   * Draw the table for the first time, adding all required features
   *  @param {object} settings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnInitialise(settings) {
    var i,
      iAjaxStart = settings.iInitDisplayStart;

    /* Ensure that the table data is fully initialised */
    if (!settings.bInitialised) {
      setTimeout(function () {
        _fnInitialise(settings);
      }, 200);
      return;
    }

    /* Build and draw the header / footer for the table */
    _fnBuildHead(settings, "header");
    _fnBuildHead(settings, "footer");
    _fnDrawHead(settings, settings.aoHeader);
    _fnDrawHead(settings, settings.aoFooter);

    // Enable features
    _fnAddOptionsHtml(settings);
    _fnSortInit(settings);

    _colGroup(settings);

    /* Okay to show that something is going on now */
    _fnProcessingDisplay(settings, true);

    _fnCallbackFire(settings, null, "preInit", [settings], true);

    // If there is default sorting required - let's do it. The sort function
    // will do the drawing for us. Otherwise we draw the table regardless of the
    // Ajax source - this allows the table to look initialised for Ajax sourcing
    // data (show 'loading' message possibly)
    _fnReDraw(settings);

    var dataSrc = _fnDataSource(settings);

    // Server-side processing init complete is done by _fnAjaxUpdateDraw
    if (dataSrc != "ssp") {
      // if there is an ajax source load the data
      if (dataSrc == "ajax") {
        _fnBuildAjax(
          settings,
          {},
          function (json) {
            var aData = _fnAjaxDataSrc(settings, json);

            // Got the data - add it to the table
            for (i = 0; i < aData.length; i++) {
              _fnAddData(settings, aData[i]);
            }

            // Reset the init display for cookie saving. We've already done
            // a filter, and therefore cleared it before. So we need to make
            // it appear 'fresh'
            settings.iInitDisplayStart = iAjaxStart;

            _fnReDraw(settings);
            _fnProcessingDisplay(settings, false);
            _fnInitComplete(settings);
          },
          settings
        );
      } else {
        _fnInitComplete(settings);
        _fnProcessingDisplay(settings, false);
      }
    }
  }

  /**
   * Draw the table for the first time, adding all required features
   *  @param {object} settings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnInitComplete(settings) {
    if (settings._bInitComplete) {
      return;
    }

    var args = [settings, settings.json];

    settings._bInitComplete = true;

    // Table is fully set up and we have data, so calculate the
    // column widths
    _fnAdjustColumnSizing(settings);

    _fnCallbackFire(settings, null, "plugin-init", args, true);
    _fnCallbackFire(settings, "aoInitComplete", "init", args, true);
  }

  function _fnLengthChange(settings, val) {
    var len = parseInt(val, 10);
    settings._iDisplayLength = len;

    _fnLengthOverflow(settings);

    // Fire length change event
    _fnCallbackFire(settings, null, "length", [settings, len]);
  }

  /**
   * Alter the display settings to change the page
   *  @param {object} settings DataTables settings object
   *  @param {string|int} action Paging action to take: "first", "previous",
   *    "next" or "last" or page number to jump to (integer)
   *  @param [bool] redraw Automatically draw the update or not
   *  @returns {bool} true page has changed, false - no change
   *  @memberof DataTable#oApi
   */
  function _fnPageChange(settings, action, redraw) {
    var start = settings._iDisplayStart,
      len = settings._iDisplayLength,
      records = settings.fnRecordsDisplay();

    if (records === 0 || len === -1) {
      start = 0;
    } else if (typeof action === "number") {
      start = action * len;

      if (start > records) {
        start = 0;
      }
    } else if (action == "first") {
      start = 0;
    } else if (action == "previous") {
      start = len >= 0 ? start - len : 0;

      if (start < 0) {
        start = 0;
      }
    } else if (action == "next") {
      if (start + len < records) {
        start += len;
      }
    } else if (action == "last") {
      start = Math.floor((records - 1) / len) * len;
    } else if (action === "ellipsis") {
      return;
    } else {
      _fnLog(settings, 0, "Unknown paging action: " + action, 5);
    }

    var changed = settings._iDisplayStart !== start;
    settings._iDisplayStart = start;

    _fnCallbackFire(settings, null, changed ? "page" : "page-nc", [settings]);

    if (changed && redraw) {
      _fnDraw(settings);
    }

    return changed;
  }

  /**
   * Generate the node required for the processing node
   *  @param {object} settings DataTables settings object
   */
  function _processingHtml(settings) {
    var table = settings.nTable;

    if (settings.oFeatures.bProcessing) {
      var n = $("<div/>", {
        id: settings.sTableId + "_processing",
        class: settings.oClasses.processing.container,
        role: "status",
      })
        .html(settings.oLanguage.sProcessing)
        .append("<div><div></div><div></div><div></div><div></div></div>")
        .insertBefore(table);

      $(table).on("processing.dt.DT", function (e, s, show) {
        n.css("display", show ? "block" : "none");
      });
    }
  }

  /**
   * Display or hide the processing indicator
   *  @param {object} settings DataTables settings object
   *  @param {bool} show Show the processing indicator (true) or not (false)
   */
  function _fnProcessingDisplay(settings, show) {
    _fnCallbackFire(settings, null, "processing", [settings, show]);
  }
  /**
   * Add any control elements for the table - specifically scrolling
   *  @param {object} settings dataTables settings object
   *  @returns {node} Node to add to the DOM
   *  @memberof DataTable#oApi
   */
  function _fnFeatureHtmlTable(settings) {
    var table = $(settings.nTable);

    // Scrolling from here on in
    var scroll = settings.oScroll;

    if (scroll.sX === "" && scroll.sY === "") {
      return settings.nTable;
    }

    var scrollX = scroll.sX;
    var scrollY = scroll.sY;
    var classes = settings.oClasses.scrolling;
    var caption = settings.captionNode;
    var captionSide = caption ? caption._captionSide : null;
    var headerClone = $(table[0].cloneNode(false));
    var footerClone = $(table[0].cloneNode(false));
    var footer = table.children("tfoot");
    var _div = "<div/>";
    var size = function (s) {
      return !s ? null : _fnStringToCss(s);
    };

    if (!footer.length) {
      footer = null;
    }

    /*
     * The HTML structure that we want to generate in this function is:
     *  div - scroller
     *    div - scroll head
     *      div - scroll head inner
     *        table - scroll head table
     *          thead - thead
     *    div - scroll body
     *      table - table (master table)
     *        thead - thead clone for sizing
     *        tbody - tbody
     *    div - scroll foot
     *      div - scroll foot inner
     *        table - scroll foot table
     *          tfoot - tfoot
     */
    var scroller = $(_div, { class: classes.container })
      .append(
        $(_div, { class: classes.header.self })
          .css({
            overflow: "hidden",
            position: "relative",
            border: 0,
            width: scrollX ? size(scrollX) : "100%",
          })
          .append(
            $(_div, { class: classes.header.inner })
              .css({
                "box-sizing": "content-box",
                width: scroll.sXInner || "100%",
              })
              .append(
                headerClone
                  .removeAttr("id")
                  .css("margin-left", 0)
                  .append(captionSide === "top" ? caption : null)
                  .append(table.children("thead"))
              )
          )
      )
      .append(
        $(_div, { class: classes.body })
          .css({
            position: "relative",
            overflow: "auto",
            width: size(scrollX),
          })
          .append(table)
      );

    if (footer) {
      scroller.append(
        $(_div, { class: classes.footer.self })
          .css({
            overflow: "hidden",
            border: 0,
            width: scrollX ? size(scrollX) : "100%",
          })
          .append(
            $(_div, { class: classes.footer.inner }).append(
              footerClone
                .removeAttr("id")
                .css("margin-left", 0)
                .append(captionSide === "bottom" ? caption : null)
                .append(table.children("tfoot"))
            )
          )
      );
    }

    var children = scroller.children();
    var scrollHead = children[0];
    var scrollBody = children[1];
    var scrollFoot = footer ? children[2] : null;

    // When the body is scrolled, then we also want to scroll the headers
    $(scrollBody).on("scroll.DT", function () {
      var scrollLeft = this.scrollLeft;

      scrollHead.scrollLeft = scrollLeft;

      if (footer) {
        scrollFoot.scrollLeft = scrollLeft;
      }
    });

    // When focus is put on the header cells, we might need to scroll the body
    $("th, td", scrollHead).on("focus", function () {
      var scrollLeft = scrollHead.scrollLeft;

      scrollBody.scrollLeft = scrollLeft;

      if (footer) {
        scrollBody.scrollLeft = scrollLeft;
      }
    });

    $(scrollBody).css("max-height", scrollY);
    if (!scroll.bCollapse) {
      $(scrollBody).css("height", scrollY);
    }

    settings.nScrollHead = scrollHead;
    settings.nScrollBody = scrollBody;
    settings.nScrollFoot = scrollFoot;

    // On redraw - align columns
    settings.aoDrawCallback.push(_fnScrollDraw);

    return scroller[0];
  }

  /**
   * Update the header, footer and body tables for resizing - i.e. column
   * alignment.
   *
   * Welcome to the most horrible function DataTables. The process that this
   * function follows is basically:
   *   1. Re-create the table inside the scrolling div
   *   2. Correct colgroup > col values if needed
   *   3. Copy colgroup > col over to header and footer
   *   4. Clean up
   *
   *  @param {object} settings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnScrollDraw(settings) {
    // Given that this is such a monster function, a lot of variables are use
    // to try and keep the minimised size as small as possible
    var scroll = settings.oScroll,
      barWidth = scroll.iBarWidth,
      divHeader = $(settings.nScrollHead),
      divHeaderInner = divHeader.children("div"),
      divHeaderTable = divHeaderInner.children("table"),
      divBodyEl = settings.nScrollBody,
      divBody = $(divBodyEl),
      divFooter = $(settings.nScrollFoot),
      divFooterInner = divFooter.children("div"),
      divFooterTable = divFooterInner.children("table"),
      header = $(settings.nTHead),
      table = $(settings.nTable),
      footer = settings.nTFoot && $("th, td", settings.nTFoot).length ? $(settings.nTFoot) : null,
      browser = settings.oBrowser,
      headerCopy,
      footerCopy;

    // If the scrollbar visibility has changed from the last draw, we need to
    // adjust the column sizes as the table width will have changed to account
    // for the scrollbar
    var scrollBarVis = divBodyEl.scrollHeight > divBodyEl.clientHeight;

    if (settings.scrollBarVis !== scrollBarVis && settings.scrollBarVis !== undefined) {
      settings.scrollBarVis = scrollBarVis;
      _fnAdjustColumnSizing(settings);
      return; // adjust column sizing will call this function again
    } else {
      settings.scrollBarVis = scrollBarVis;
    }

    // 1. Re-create the table inside the scrolling div
    // Remove the old minimised thead and tfoot elements in the inner table
    table.children("thead, tfoot").remove();

    // Clone the current header and footer elements and then place it into the inner table
    headerCopy = header.clone().prependTo(table);
    headerCopy.find("th, td").removeAttr("tabindex");
    headerCopy.find("[id]").removeAttr("id");

    if (footer) {
      footerCopy = footer.clone().prependTo(table);
      footerCopy.find("[id]").removeAttr("id");
    }

    // 2. Correct colgroup > col values if needed
    // It is possible that the cell sizes are smaller than the content, so we need to
    // correct colgroup>col for such cases. This can happen if the auto width detection
    // uses a cell which has a longer string, but isn't the widest! For example
    // "Chief Executive Officer (CEO)" is the longest string in the demo, but
    // "Systems Administrator" is actually the widest string since it doesn't collapse.
    if (settings.aiDisplay.length) {
      // Get the column sizes from the first row in the table
      var colSizes = table
        .find("tbody tr")
        .eq(0)
        .find("th, td")
        .map(function () {
          return $(this).outerWidth();
        });

      // Check against what the colgroup > col is set to and correct if needed
      $("col", settings.colgroup).each(function (i) {
        var colWidth = this.style.width.replace("px", "");

        if (colWidth !== colSizes[i]) {
          this.style.width = colSizes[i] + "px";
        }
      });
    }

    // 3. Copy the colgroup over to the header and footer
    divHeaderTable.find("colgroup").remove();

    divHeaderTable.append(settings.colgroup.clone());

    if (footer) {
      divFooterTable.find("colgroup").remove();

      divFooterTable.append(settings.colgroup.clone());
    }

    // "Hide" the header and footer that we used for the sizing. We need to keep
    // the content of the cell so that the width applied to the header and body
    // both match, but we want to hide it completely.
    $("th, td", headerCopy).each(function () {
      $(this).children().wrapAll('<div class="dt-scroll-sizing">');
    });

    if (footer) {
      $("th, td", footerCopy).each(function () {
        $(this).children().wrapAll('<div class="dt-scroll-sizing">');
      });
    }

    // 4. Clean up
    // Figure out if there are scrollbar present - if so then we need a the header and footer to
    // provide a bit more space to allow "overflow" scrolling (i.e. past the scrollbar)
    var isScrolling = Math.floor(table.height()) > divBodyEl.clientHeight || divBody.css("overflow-y") == "scroll";
    var paddingSide = "padding" + (browser.bScrollbarLeft ? "Left" : "Right");

    // Set the width's of the header and footer tables
    var outerWidth = table.outerWidth();

    divHeaderTable.css("width", _fnStringToCss(outerWidth));
    divHeaderInner.css("width", _fnStringToCss(outerWidth)).css(paddingSide, isScrolling ? barWidth + "px" : "0px");

    if (footer) {
      divFooterTable.css("width", _fnStringToCss(outerWidth));
      divFooterInner.css("width", _fnStringToCss(outerWidth)).css(paddingSide, isScrolling ? barWidth + "px" : "0px");
    }

    // Correct DOM ordering for colgroup - comes before the thead
    table.children("colgroup").prependTo(table);

    // Adjust the position of the header in case we loose the y-scrollbar
    divBody.trigger("scroll");

    // If sorting or filtering has occurred, jump the scrolling back to the top
    // only if we aren't holding the position
    if ((settings.bSorted || settings.bFiltered) && !settings._drawHold) {
      divBodyEl.scrollTop = 0;
    }
  }

  /**
   * Calculate the width of columns for the table
   *  @param {object} settings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnCalculateColumnWidths(settings) {
    // Not interested in doing column width calculation if auto-width is disabled
    if (!settings.oFeatures.bAutoWidth) {
      return;
    }

    var table = settings.nTable,
      columns = settings.aoColumns,
      scroll = settings.oScroll,
      scrollY = scroll.sY,
      scrollX = scroll.sX,
      scrollXInner = scroll.sXInner,
      visibleColumns = _fnGetColumns(settings, "bVisible"),
      tableWidthAttr = table.getAttribute("width"), // from DOM element
      tableContainer = table.parentNode,
      i,
      column,
      columnIdx;

    var styleWidth = table.style.width;
    if (styleWidth && styleWidth.indexOf("%") !== -1) {
      tableWidthAttr = styleWidth;
    }

    // Let plug-ins know that we are doing a recalc, in case they have changed any of the
    // visible columns their own way (e.g. Responsive uses display:none).
    _fnCallbackFire(settings, null, "column-calc", { visible: visibleColumns }, false);

    // Construct a single row, worst case, table with the widest
    // node in the data, assign any user defined widths, then insert it into
    // the DOM and allow the browser to do all the hard work of calculating
    // table widths
    var tmpTable = $(table.cloneNode()).css("visibility", "hidden").removeAttr("id");

    // Clean up the table body
    tmpTable.append("<tbody>");
    var tr = $("<tr/>").appendTo(tmpTable.find("tbody"));

    // Clone the table header and footer - we can't use the header / footer
    // from the cloned table, since if scrolling is active, the table's
    // real header and footer are contained in different table tags
    tmpTable.append($(settings.nTHead).clone()).append($(settings.nTFoot).clone());

    // Remove any assigned widths from the footer (from scrolling)
    tmpTable.find("tfoot th, tfoot td").css("width", "");

    // Apply custom sizing to the cloned header
    tmpTable.find("thead th, thead td").each(function () {
      // Get the `width` from the header layout
      var width = _fnColumnsSumWidth(settings, this, true, false);

      if (width) {
        this.style.width = width;

        // For scrollX we need to force the column width otherwise the
        // browser will collapse it. If this width is smaller than the
        // width the column requires, then it will have no effect
        if (scrollX) {
          $(this).append(
            $("<div/>").css({
              width: width,
              margin: 0,
              padding: 0,
              border: 0,
              height: 1,
            })
          );
        }
      } else {
        this.style.width = "";
      }
    });

    // Find the widest piece of data for each column and put it into the table
    for (i = 0; i < visibleColumns.length; i++) {
      columnIdx = visibleColumns[i];
      column = columns[columnIdx];

      var longest = _fnGetMaxLenString(settings, columnIdx);
      var autoClass = _ext.type.className[column.sType];
      var text = longest + column.sContentPadding;
      var insert = longest.indexOf("<") === -1 ? document.createTextNode(text) : text;

      $("<td/>").addClass(autoClass).addClass(column.sClass).append(insert).appendTo(tr);
    }

    // Tidy the temporary table - remove name attributes so there aren't
    // duplicated in the dom (radio elements for example)
    $("[name]", tmpTable).removeAttr("name");

    // Table has been built, attach to the document so we can work with it.
    // A holding element is used, positioned at the top of the container
    // with minimal height, so it has no effect on if the container scrolls
    // or not. Otherwise it might trigger scrolling when it actually isn't
    // needed
    var holder = $("<div/>")
      .css(
        scrollX || scrollY
          ? {
              position: "absolute",
              top: 0,
              left: 0,
              height: 1,
              right: 0,
              overflow: "hidden",
            }
          : {}
      )
      .append(tmpTable)
      .appendTo(tableContainer);

    // When scrolling (X or Y) we want to set the width of the table as
    // appropriate. However, when not scrolling leave the table width as it
    // is. This results in slightly different, but I think correct behaviour
    if (scrollX && scrollXInner) {
      tmpTable.width(scrollXInner);
    } else if (scrollX) {
      tmpTable.css("width", "auto");
      tmpTable.removeAttr("width");

      // If there is no width attribute or style, then allow the table to
      // collapse
      if (tmpTable.width() < tableContainer.clientWidth && tableWidthAttr) {
        tmpTable.width(tableContainer.clientWidth);
      }
    } else if (scrollY) {
      tmpTable.width(tableContainer.clientWidth);
    } else if (tableWidthAttr) {
      tmpTable.width(tableWidthAttr);
    }

    // Get the width of each column in the constructed table
    var total = 0;
    var bodyCells = tmpTable.find("tbody tr").eq(0).children();

    for (i = 0; i < visibleColumns.length; i++) {
      // Use getBounding for sub-pixel accuracy, which we then want to round up!
      var bounding = bodyCells[i].getBoundingClientRect().width;

      // Total is tracked to remove any sub-pixel errors as the outerWidth
      // of the table might not equal the total given here
      total += bounding;

      // Width for each column to use
      columns[visibleColumns[i]].sWidth = _fnStringToCss(bounding);
    }

    table.style.width = _fnStringToCss(total);

    // Finished with the table - ditch it
    holder.remove();

    // If there is a width attr, we want to attach an event listener which
    // allows the table sizing to automatically adjust when the window is
    // resized. Use the width attr rather than CSS, since we can't know if the
    // CSS is a relative value or absolute - DOM read is always px.
    if (tableWidthAttr) {
      table.style.width = _fnStringToCss(tableWidthAttr);
    }

    if ((tableWidthAttr || scrollX) && !settings._reszEvt) {
      var bindResize = function () {
        $(window).on(
          "resize.DT-" + settings.sInstance,
          DataTable.util.throttle(function () {
            if (!settings.bDestroying) {
              _fnAdjustColumnSizing(settings);
            }
          })
        );
      };

      bindResize();

      settings._reszEvt = true;
    }
  }

  /**
   * Get the maximum strlen for each data column
   *  @param {object} settings dataTables settings object
   *  @param {int} colIdx column of interest
   *  @returns {string} string of the max length
   *  @memberof DataTable#oApi
   */
  function _fnGetMaxLenString(settings, colIdx) {
    var column = settings.aoColumns[colIdx];

    if (!column.maxLenString) {
      var s,
        max = "",
        maxLen = -1;

      for (var i = 0, ien = settings.aiDisplayMaster.length; i < ien; i++) {
        var rowIdx = settings.aiDisplayMaster[i];
        var data = _fnGetRowDisplay(settings, rowIdx)[colIdx];

        var cellString = data && typeof data === "object" && data.nodeType ? data.innerHTML : data + "";

        // Remove id / name attributes from elements so they
        // don't interfere with existing elements
        cellString = cellString.replace(/id=".*?"/g, "").replace(/name=".*?"/g, "");

        s = _stripHtml(cellString).replace(/&nbsp;/g, " ");

        if (s.length > maxLen) {
          // We want the HTML in the string, but the length that
          // is important is the stripped string
          max = cellString;
          maxLen = s.length;
        }
      }

      column.maxLenString = max;
    }

    return column.maxLenString;
  }

  /**
   * Append a CSS unit (only if required) to a string
   *  @param {string} value to css-ify
   *  @returns {string} value with css unit
   *  @memberof DataTable#oApi
   */
  function _fnStringToCss(s) {
    if (s === null) {
      return "0px";
    }

    if (typeof s == "number") {
      return s < 0 ? "0px" : s + "px";
    }

    // Check it has a unit character already
    return s.match(/\d$/) ? s + "px" : s;
  }

  /**
   * Re-insert the `col` elements for current visibility
   *
   * @param {*} settings DT settings
   */
  function _colGroup(settings) {
    var cols = settings.aoColumns;

    settings.colgroup.empty();

    for (i = 0; i < cols.length; i++) {
      if (cols[i].bVisible) {
        settings.colgroup.append(cols[i].colEl);
      }
    }
  }

  function _fnSortInit(settings) {
    var target = settings.nTHead;
    var headerRows = target.querySelectorAll("tr");
    var legacyTop = settings.bSortCellsTop;
    var notSelector = ':not([data-dt-order="disable"]):not([data-dt-order="icon-only"])';

    // Legacy support for `orderCellsTop`
    if (legacyTop === true) {
      target = headerRows[0];
    } else if (legacyTop === false) {
      target = headerRows[headerRows.length - 1];
    }

    _fnSortAttachListener(settings, target, target === settings.nTHead ? "tr" + notSelector + " th" + notSelector + ", tr" + notSelector + " td" + notSelector : "th" + notSelector + ", td" + notSelector);

    // Need to resolve the user input array into our internal structure
    var order = [];
    _fnSortResolve(settings, order, settings.aaSorting);

    settings.aaSorting = order;
  }

  function _fnSortAttachListener(settings, node, selector, column, callback) {
    _fnBindAction(node, selector, function (e) {
      var columns = column === undefined ? _fnColumnsFromHeader(e.target) : [column];

      if (columns.length) {
        _fnProcessingDisplay(settings, true);

        // Allow the processing display to show
        setTimeout(function () {
          for (var i = 0, ien = columns.length; i < ien; i++) {
            _fnSortAdd(settings, columns[i], i, e.shiftKey);

            // If the first entry is no sort, then subsequent
            // sort columns are ignored
            if (settings.aaSorting.length === 1 && settings.aaSorting[0][1] === "") {
              break;
            }
          }

          _fnSort(settings);
          _fnSortDisplay(settings);
          _fnReDraw(settings, false, false);
          _fnProcessingDisplay(settings, false);

          if (callback) {
            callback();
          }
        }, 0);
      }
    });
  }

  /**
   * Sort the display array to match the master's order
   * @param {*} settings
   */
  function _fnSortDisplay(settings) {
    var display = settings.aiDisplay;
    var master = settings.aiDisplayMaster;
    var masterMap = {};
    var map = {};
    var i;

    // Rather than needing an `indexOf` on master array, we can create a map
    for (i = 0; i < master.length; i++) {
      masterMap[master[i]] = i;
    }

    // And then cache what would be the indexOf fom the display
    for (i = 0; i < display.length; i++) {
      map[display[i]] = masterMap[display[i]];
    }

    display.sort(function (a, b) {
      // Short version of this function is simply `master.indexOf(a) - master.indexOf(b);`
      return map[a] - map[b];
    });
  }

  function _fnSortResolve(settings, nestedSort, sort) {
    var push = function (a) {
      if ($.isPlainObject(a)) {
        if (a.idx !== undefined) {
          // Index based ordering
          nestedSort.push([a.idx, a.dir]);
        } else if (a.name) {
          // Name based ordering
          var cols = _pluck(settings.aoColumns, "sName");
          var idx = cols.indexOf(a.name);

          if (idx !== -1) {
            nestedSort.push([idx, a.dir]);
          }
        }
      } else {
        // Plain column index and direction pair
        nestedSort.push(a);
      }
    };

    if ($.isPlainObject(sort)) {
      // Object
      push(sort);
    } else if (sort.length && typeof sort[0] === "number") {
      // 1D array
      push(sort);
    } else if (sort.length) {
      // 2D array
      for (var z = 0; z < sort.length; z++) {
        push(sort[z]); // Object or array
      }
    }
  }

  function _fnSortFlatten(settings) {
    var i,
      k,
      kLen,
      aSort = [],
      extSort = DataTable.ext.type.order,
      aoColumns = settings.aoColumns,
      aDataSort,
      iCol,
      sType,
      srcCol,
      fixed = settings.aaSortingFixed,
      fixedObj = $.isPlainObject(fixed),
      nestedSort = [];

    if (!settings.oFeatures.bSort) {
      return aSort;
    }

    // Build the sort array, with pre-fix and post-fix options if they have been
    // specified
    if (Array.isArray(fixed)) {
      _fnSortResolve(settings, nestedSort, fixed);
    }

    if (fixedObj && fixed.pre) {
      _fnSortResolve(settings, nestedSort, fixed.pre);
    }

    _fnSortResolve(settings, nestedSort, settings.aaSorting);

    if (fixedObj && fixed.post) {
      _fnSortResolve(settings, nestedSort, fixed.post);
    }

    for (i = 0; i < nestedSort.length; i++) {
      srcCol = nestedSort[i][0];

      if (aoColumns[srcCol]) {
        aDataSort = aoColumns[srcCol].aDataSort;

        for (k = 0, kLen = aDataSort.length; k < kLen; k++) {
          iCol = aDataSort[k];
          sType = aoColumns[iCol].sType || "string";

          if (nestedSort[i]._idx === undefined) {
            nestedSort[i]._idx = aoColumns[iCol].asSorting.indexOf(nestedSort[i][1]);
          }

          if (nestedSort[i][1]) {
            aSort.push({
              src: srcCol,
              col: iCol,
              dir: nestedSort[i][1],
              index: nestedSort[i]._idx,
              type: sType,
              formatter: extSort[sType + "-pre"],
              sorter: extSort[sType + "-" + nestedSort[i][1]],
            });
          }
        }
      }
    }

    return aSort;
  }

  /**
   * Change the order of the table
   *  @param {object} oSettings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnSort(oSettings, col, dir) {
    var i,
      ien,
      iLen,
      aiOrig = [],
      extSort = DataTable.ext.type.order,
      aoData = oSettings.aoData,
      sortCol,
      displayMaster = oSettings.aiDisplayMaster,
      aSort;

    // Resolve any column types that are unknown due to addition or invalidation
    // @todo Can this be moved into a 'data-ready' handler which is called when
    //   data is going to be used in the table?
    _fnColumnTypes(oSettings);

    // Allow a specific column to be sorted, which will _not_ alter the display
    // master
    if (col !== undefined) {
      var srcCol = oSettings.aoColumns[col];
      aSort = [
        {
          src: col,
          col: col,
          dir: dir,
          index: 0,
          type: srcCol.sType,
          formatter: extSort[srcCol.sType + "-pre"],
          sorter: extSort[srcCol.sType + "-" + dir],
        },
      ];
      displayMaster = displayMaster.slice();
    } else {
      aSort = _fnSortFlatten(oSettings);
    }

    for (i = 0, ien = aSort.length; i < ien; i++) {
      sortCol = aSort[i];

      // Load the data needed for the sort, for each cell
      _fnSortData(oSettings, sortCol.col);
    }

    /* No sorting required if server-side or no sorting array */
    if (_fnDataSource(oSettings) != "ssp" && aSort.length !== 0) {
      // Reset the initial positions on each pass so we get a stable sort
      for (i = 0, iLen = displayMaster.length; i < iLen; i++) {
        aiOrig[i] = i;
      }

      // If the first sort is desc, then reverse the array to preserve original
      // order, just in reverse
      if (aSort.length && aSort[0].dir === "desc") {
        aiOrig.reverse();
      }

      /* Do the sort - here we want multi-column sorting based on a given data source (column)
       * and sorting function (from oSort) in a certain direction. It's reasonably complex to
       * follow on it's own, but this is what we want (example two column sorting):
       *  fnLocalSorting = function(a,b){
       *    var test;
       *    test = oSort['string-asc']('data11', 'data12');
       *      if (test !== 0)
       *        return test;
       *    test = oSort['numeric-desc']('data21', 'data22');
       *    if (test !== 0)
       *      return test;
       *    return oSort['numeric-asc']( aiOrig[a], aiOrig[b] );
       *  }
       * Basically we have a test for each sorting column, if the data in that column is equal,
       * test the next column. If all columns match, then we use a numeric sort on the row
       * positions in the original data array to provide a stable sort.
       */
      displayMaster.sort(function (a, b) {
        var x,
          y,
          k,
          test,
          sort,
          len = aSort.length,
          dataA = aoData[a]._aSortData,
          dataB = aoData[b]._aSortData;

        for (k = 0; k < len; k++) {
          sort = aSort[k];

          // Data, which may have already been through a `-pre` function
          x = dataA[sort.col];
          y = dataB[sort.col];

          if (sort.sorter) {
            // If there is a custom sorter (`-asc` or `-desc`) for this
            // data type, use it
            test = sort.sorter(x, y);

            if (test !== 0) {
              return test;
            }
          } else {
            // Otherwise, use generic sorting
            test = x < y ? -1 : x > y ? 1 : 0;

            if (test !== 0) {
              return sort.dir === "asc" ? test : -test;
            }
          }
        }

        x = aiOrig[a];
        y = aiOrig[b];

        return x < y ? -1 : x > y ? 1 : 0;
      });
    } else if (aSort.length === 0) {
      // Apply index order
      displayMaster.sort(function (x, y) {
        return x < y ? -1 : x > y ? 1 : 0;
      });
    }

    if (col === undefined) {
      // Tell the draw function that we have sorted the data
      oSettings.bSorted = true;

      _fnCallbackFire(oSettings, null, "order", [oSettings, aSort]);
    }

    return displayMaster;
  }

  /**
   * Function to run on user sort request
   *  @param {object} settings dataTables settings object
   *  @param {node} attachTo node to attach the handler to
   *  @param {int} colIdx column sorting index
   *  @param {int} addIndex Counter
   *  @param {boolean} [shift=false] Shift click add
   *  @param {function} [callback] callback function
   *  @memberof DataTable#oApi
   */
  function _fnSortAdd(settings, colIdx, addIndex, shift) {
    var col = settings.aoColumns[colIdx];
    var sorting = settings.aaSorting;
    var asSorting = col.asSorting;
    var nextSortIdx;
    var next = function (a, overflow) {
      var idx = a._idx;
      if (idx === undefined) {
        idx = asSorting.indexOf(a[1]);
      }

      return idx + 1 < asSorting.length ? idx + 1 : overflow ? null : 0;
    };

    if (!col.bSortable) {
      return;
    }

    // Convert to 2D array if needed
    if (typeof sorting[0] === "number") {
      sorting = settings.aaSorting = [sorting];
    }

    // If appending the sort then we are multi-column sorting
    if ((shift || addIndex) && settings.oFeatures.bSortMulti) {
      // Are we already doing some kind of sort on this column?
      var sortIdx = _pluck(sorting, "0").indexOf(colIdx);

      if (sortIdx !== -1) {
        // Yes, modify the sort
        nextSortIdx = next(sorting[sortIdx], true);

        if (nextSortIdx === null && sorting.length === 1) {
          nextSortIdx = 0; // can't remove sorting completely
        }

        if (nextSortIdx === null) {
          sorting.splice(sortIdx, 1);
        } else {
          sorting[sortIdx][1] = asSorting[nextSortIdx];
          sorting[sortIdx]._idx = nextSortIdx;
        }
      } else if (shift) {
        // No sort on this column yet, being added by shift click
        // add it as itself
        sorting.push([colIdx, asSorting[0], 0]);
        sorting[sorting.length - 1]._idx = 0;
      } else {
        // No sort on this column yet, being added from a colspan
        // so add with same direction as first column
        sorting.push([colIdx, sorting[0][1], 0]);
        sorting[sorting.length - 1]._idx = 0;
      }
    } else if (sorting.length && sorting[0][0] == colIdx) {
      // Single column - already sorting on this column, modify the sort
      nextSortIdx = next(sorting[0]);

      sorting.length = 1;
      sorting[0][1] = asSorting[nextSortIdx];
      sorting[0]._idx = nextSortIdx;
    } else {
      // Single column - sort only on this column
      sorting.length = 0;
      sorting.push([colIdx, asSorting[0]]);
      sorting[0]._idx = 0;
    }
  }

  /**
   * Set the sorting classes on table's body, Note: it is safe to call this function
   * when bSort and bSortClasses are false
   *  @param {object} oSettings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnSortingClasses(settings) {
    var oldSort = settings.aLastSort;
    var sortClass = settings.oClasses.order.position;
    var sort = _fnSortFlatten(settings);
    var features = settings.oFeatures;
    var i, ien, colIdx;

    if (features.bSort && features.bSortClasses) {
      // Remove old sorting classes
      for (i = 0, ien = oldSort.length; i < ien; i++) {
        colIdx = oldSort[i].src;

        // Remove column sorting
        $(_pluck(settings.aoData, "anCells", colIdx)).removeClass(sortClass + (i < 2 ? i + 1 : 3));
      }

      // Add new column sorting
      for (i = 0, ien = sort.length; i < ien; i++) {
        colIdx = sort[i].src;

        $(_pluck(settings.aoData, "anCells", colIdx)).addClass(sortClass + (i < 2 ? i + 1 : 3));
      }
    }

    settings.aLastSort = sort;
  }

  // Get the data to sort a column, be it from cache, fresh (populating the
  // cache), or from a sort formatter
  function _fnSortData(settings, colIdx) {
    // Custom sorting function - provided by the sort data type
    var column = settings.aoColumns[colIdx];
    var customSort = DataTable.ext.order[column.sSortDataType];
    var customData;

    if (customSort) {
      customData = customSort.call(settings.oInstance, settings, colIdx, _fnColumnIndexToVisible(settings, colIdx));
    }

    // Use / populate cache
    var row, cellData;
    var formatter = DataTable.ext.type.order[column.sType + "-pre"];
    var data = settings.aoData;

    for (var rowIdx = 0; rowIdx < data.length; rowIdx++) {
      // Sparse array
      if (!data[rowIdx]) {
        continue;
      }

      row = data[rowIdx];

      if (!row._aSortData) {
        row._aSortData = [];
      }

      if (!row._aSortData[colIdx] || customSort) {
        cellData = customSort
          ? customData[rowIdx] // If there was a custom sort function, use data from there
          : _fnGetCellData(settings, rowIdx, colIdx, "sort");

        row._aSortData[colIdx] = formatter ? formatter(cellData, settings) : cellData;
      }
    }
  }

  /**
   * State information for a table
   *
   * @param {*} settings
   * @returns State object
   */
  function _fnSaveState(settings) {
    if (settings._bLoadingState) {
      return;
    }

    /* Store the interesting variables */
    var state = {
      time: +new Date(),
      start: settings._iDisplayStart,
      length: settings._iDisplayLength,
      order: $.extend(true, [], settings.aaSorting),
      search: $.extend({}, settings.oPreviousSearch),
      columns: settings.aoColumns.map(function (col, i) {
        return {
          visible: col.bVisible,
          search: $.extend({}, settings.aoPreSearchCols[i]),
        };
      }),
    };

    settings.oSavedState = state;
    _fnCallbackFire(settings, "aoStateSaveParams", "stateSaveParams", [settings, state]);

    if (settings.oFeatures.bStateSave && !settings.bDestroying) {
      settings.fnStateSaveCallback.call(settings.oInstance, settings, state);
    }
  }

  /**
   * Attempt to load a saved table state
   *  @param {object} oSettings dataTables settings object
   *  @param {object} oInit DataTables init object so we can override settings
   *  @param {function} callback Callback to execute when the state has been loaded
   *  @memberof DataTable#oApi
   */
  function _fnLoadState(settings, init, callback) {
    if (!settings.oFeatures.bStateSave) {
      callback();
      return;
    }

    var loaded = function (state) {
      _fnImplementState(settings, state, callback);
    };

    var state = settings.fnStateLoadCallback.call(settings.oInstance, settings, loaded);

    if (state !== undefined) {
      _fnImplementState(settings, state, callback);
    }
    // otherwise, wait for the loaded callback to be executed

    return true;
  }

  function _fnImplementState(settings, s, callback) {
    var i, ien;
    var columns = settings.aoColumns;
    settings._bLoadingState = true;

    // When StateRestore was introduced the state could now be implemented at any time
    // Not just initialisation. To do this an api instance is required in some places
    var api = settings._bInitComplete ? new DataTable.Api(settings) : null;

    if (!s || !s.time) {
      settings._bLoadingState = false;
      callback();
      return;
    }

    // Reject old data
    var duration = settings.iStateDuration;
    if (duration > 0 && s.time < +new Date() - duration * 1000) {
      settings._bLoadingState = false;
      callback();
      return;
    }

    // Allow custom and plug-in manipulation functions to alter the saved data set and
    // cancelling of loading by returning false
    var abStateLoad = _fnCallbackFire(settings, "aoStateLoadParams", "stateLoadParams", [settings, s]);
    if (abStateLoad.indexOf(false) !== -1) {
      settings._bLoadingState = false;
      callback();
      return;
    }

    // Number of columns have changed - all bets are off, no restore of settings
    if (s.columns && columns.length !== s.columns.length) {
      settings._bLoadingState = false;
      callback();
      return;
    }

    // Store the saved state so it might be accessed at any time
    settings.oLoadedState = $.extend(true, {}, s);

    // This is needed for ColReorder, which has to happen first to allow all
    // the stored indexes to be usable. It is not publicly documented.
    _fnCallbackFire(settings, null, "stateLoadInit", [settings, s], true);

    // Page Length
    if (s.length !== undefined) {
      // If already initialised just set the value directly so that the select element is also updated
      if (api) {
        api.page.len(s.length);
      } else {
        settings._iDisplayLength = s.length;
      }
    }

    // Restore key features - todo - for 1.11 this needs to be done by
    // subscribed events
    if (s.start !== undefined) {
      if (api === null) {
        settings._iDisplayStart = s.start;
        settings.iInitDisplayStart = s.start;
      } else {
        _fnPageChange(settings, s.start / settings._iDisplayLength);
      }
    }

    // Order
    if (s.order !== undefined) {
      settings.aaSorting = [];
      $.each(s.order, function (i, col) {
        settings.aaSorting.push(col[0] >= columns.length ? [0, col[1]] : col);
      });
    }

    // Search
    if (s.search !== undefined) {
      $.extend(settings.oPreviousSearch, s.search);
    }

    // Columns
    if (s.columns) {
      for (i = 0, ien = s.columns.length; i < ien; i++) {
        var col = s.columns[i];

        // Visibility
        if (col.visible !== undefined) {
          // If the api is defined, the table has been initialised so we need to use it rather than internal settings
          if (api) {
            // Don't redraw the columns on every iteration of this loop, we will do this at the end instead
            api.column(i).visible(col.visible, false);
          } else {
            columns[i].bVisible = col.visible;
          }
        }

        // Search
        if (col.search !== undefined) {
          $.extend(settings.aoPreSearchCols[i], col.search);
        }
      }

      // If the api is defined then we need to adjust the columns once the visibility has been changed
      if (api) {
        api.columns.adjust();
      }
    }

    settings._bLoadingState = false;
    _fnCallbackFire(settings, "aoStateLoaded", "stateLoaded", [settings, s]);
    callback();
  }

  /**
   * Log an error message
   *  @param {object} settings dataTables settings object
   *  @param {int} level log error messages, or display them to the user
   *  @param {string} msg error message
   *  @param {int} tn Technical note id to get more information about the error.
   *  @memberof DataTable#oApi
   */
  function _fnLog(settings, level, msg, tn) {
    msg = "DataTables warning: " + (settings ? "table id=" + settings.sTableId + " - " : "") + msg;

    if (tn) {
      msg += ". For more information about this error, please see " + "https://datatables.net/tn/" + tn;
    }

    if (!level) {
      // Backwards compatibility pre 1.10
      var ext = DataTable.ext;
      var type = ext.sErrMode || ext.errMode;

      if (settings) {
        _fnCallbackFire(settings, null, "dt-error", [settings, tn, msg], true);
      }

      if (type == "alert") {
        alert(msg);
      } else if (type == "throw") {
        throw new Error(msg);
      } else if (typeof type == "function") {
        type(settings, tn, msg);
      }
    } else if (window.console && console.log) {
      console.log(msg);
    }
  }

  /**
   * See if a property is defined on one object, if so assign it to the other object
   *  @param {object} ret target object
   *  @param {object} src source object
   *  @param {string} name property
   *  @param {string} [mappedName] name to map too - optional, name used if not given
   *  @memberof DataTable#oApi
   */
  function _fnMap(ret, src, name, mappedName) {
    if (Array.isArray(name)) {
      $.each(name, function (i, val) {
        if (Array.isArray(val)) {
          _fnMap(ret, src, val[0], val[1]);
        } else {
          _fnMap(ret, src, val);
        }
      });

      return;
    }

    if (mappedName === undefined) {
      mappedName = name;
    }

    if (src[name] !== undefined) {
      ret[mappedName] = src[name];
    }
  }

  /**
   * Extend objects - very similar to jQuery.extend, but deep copy objects, and
   * shallow copy arrays. The reason we need to do this, is that we don't want to
   * deep copy array init values (such as aaSorting) since the dev wouldn't be
   * able to override them, but we do want to deep copy arrays.
   *  @param {object} out Object to extend
   *  @param {object} extender Object from which the properties will be applied to
   *      out
   *  @param {boolean} breakRefs If true, then arrays will be sliced to take an
   *      independent copy with the exception of the `data` or `aaData` parameters
   *      if they are present. This is so you can pass in a collection to
   *      DataTables and have that used as your data source without breaking the
   *      references
   *  @returns {object} out Reference, just for convenience - out === the return.
   *  @memberof DataTable#oApi
   *  @todo This doesn't take account of arrays inside the deep copied objects.
   */
  function _fnExtend(out, extender, breakRefs) {
    var val;

    for (var prop in extender) {
      if (Object.prototype.hasOwnProperty.call(extender, prop)) {
        val = extender[prop];

        if ($.isPlainObject(val)) {
          if (!$.isPlainObject(out[prop])) {
            out[prop] = {};
          }
          $.extend(true, out[prop], val);
        } else if (breakRefs && prop !== "data" && prop !== "aaData" && Array.isArray(val)) {
          out[prop] = val.slice();
        } else {
          out[prop] = val;
        }
      }
    }

    return out;
  }

  /**
   * Bind an event handers to allow a click or return key to activate the callback.
   * This is good for accessibility since a return on the keyboard will have the
   * same effect as a click, if the element has focus.
   *  @param {element} n Element to bind the action to
   *  @param {object|string} selector Selector (for delegated events) or data object
   *   to pass to the triggered function
   *  @param {function} fn Callback function for when the event is triggered
   *  @memberof DataTable#oApi
   */
  function _fnBindAction(n, selector, fn) {
    $(n)
      .on("click.DT", selector, function (e) {
        fn(e);
      })
      .on("keypress.DT", selector, function (e) {
        if (e.which === 13) {
          e.preventDefault();
          fn(e);
        }
      })
      .on("selectstart.DT", selector, function () {
        // Don't want a double click resulting in text selection
        return false;
      });
  }

  /**
   * Register a callback function. Easily allows a callback function to be added to
   * an array store of callback functions that can then all be called together.
   *  @param {object} settings dataTables settings object
   *  @param {string} store Name of the array storage for the callbacks in oSettings
   *  @param {function} fn Function to be called back
   *  @memberof DataTable#oApi
   */
  function _fnCallbackReg(settings, store, fn) {
    if (fn) {
      settings[store].push(fn);
    }
  }

  /**
   * Fire callback functions and trigger events. Note that the loop over the
   * callback array store is done backwards! Further note that you do not want to
   * fire off triggers in time sensitive applications (for example cell creation)
   * as its slow.
   *  @param {object} settings dataTables settings object
   *  @param {string} callbackArr Name of the array storage for the callbacks in
   *      oSettings
   *  @param {string} eventName Name of the jQuery custom event to trigger. If
   *      null no trigger is fired
   *  @param {array} args Array of arguments to pass to the callback function /
   *      trigger
   *  @param {boolean} [bubbles] True if the event should bubble
   *  @memberof DataTable#oApi
   */
  function _fnCallbackFire(settings, callbackArr, eventName, args, bubbles) {
    var ret = [];

    if (callbackArr) {
      ret = settings[callbackArr]
        .slice()
        .reverse()
        .map(function (val) {
          return val.apply(settings.oInstance, args);
        });
    }

    if (eventName !== null) {
      var e = $.Event(eventName + ".dt");
      var table = $(settings.nTable);

      // Expose the DataTables API on the event object for easy access
      e.dt = settings.api;

      table[bubbles ? "trigger" : "triggerHandler"](e, args);

      // If not yet attached to the document, trigger the event
      // on the body directly to sort of simulate the bubble
      if (bubbles && table.parents("body").length === 0) {
        $("body").trigger(e, args);
      }

      ret.push(e.result);
    }

    return ret;
  }

  function _fnLengthOverflow(settings) {
    var start = settings._iDisplayStart,
      end = settings.fnDisplayEnd(),
      len = settings._iDisplayLength;

    /* If we have space to show extra rows (backing up from the end point - then do so */
    if (start >= end) {
      start = end - len;
    }

    // Keep the start record on the current page
    start -= start % len;

    if (len === -1 || start < 0) {
      start = 0;
    }

    settings._iDisplayStart = start;
  }

  function _fnRenderer(settings, type) {
    var renderer = settings.renderer;
    var host = DataTable.ext.renderer[type];

    if ($.isPlainObject(renderer) && renderer[type]) {
      // Specific renderer for this type. If available use it, otherwise use
      // the default.
      return host[renderer[type]] || host._;
    } else if (typeof renderer === "string") {
      // Common renderer - if there is one available for this type use it,
      // otherwise use the default
      return host[renderer] || host._;
    }

    // Use the default
    return host._;
  }

  /**
   * Detect the data source being used for the table. Used to simplify the code
   * a little (ajax) and to make it compress a little smaller.
   *
   *  @param {object} settings dataTables settings object
   *  @returns {string} Data source
   *  @memberof DataTable#oApi
   */
  function _fnDataSource(settings) {
    if (settings.oFeatures.bServerSide) {
      return "ssp";
    } else if (settings.ajax) {
      return "ajax";
    }
    return "dom";
  }

  /**
   * Common replacement for language strings
   *
   * @param {*} settings DT settings object
   * @param {*} str String with values to replace
   * @param {*} entries Plural number for _ENTRIES_ - can be undefined
   * @returns String
   */
  function _fnMacros(settings, str, entries) {
    // When infinite scrolling, we are always starting at 1. _iDisplayStart is
    // used only internally
    var formatter = settings.fnFormatNumber,
      start = settings._iDisplayStart + 1,
      len = settings._iDisplayLength,
      vis = settings.fnRecordsDisplay(),
      max = settings.fnRecordsTotal(),
      all = len === -1;

    return str
      .replace(/_START_/g, formatter.call(settings, start))
      .replace(/_END_/g, formatter.call(settings, settings.fnDisplayEnd()))
      .replace(/_MAX_/g, formatter.call(settings, max))
      .replace(/_TOTAL_/g, formatter.call(settings, vis))
      .replace(/_PAGE_/g, formatter.call(settings, all ? 1 : Math.ceil(start / len)))
      .replace(/_PAGES_/g, formatter.call(settings, all ? 1 : Math.ceil(vis / len)))
      .replace(/_ENTRIES_/g, settings.api.i18n("entries", "", entries))
      .replace(/_ENTRIES-MAX_/g, settings.api.i18n("entries", "", max))
      .replace(/_ENTRIES-TOTAL_/g, settings.api.i18n("entries", "", vis));
  }

  /**
   * Computed structure of the DataTables API, defined by the options passed to
   * `DataTable.Api.register()` when building the API.
   *
   * The structure is built in order to speed creation and extension of the Api
   * objects since the extensions are effectively pre-parsed.
   *
   * The array is an array of objects with the following structure, where this
   * base array represents the Api prototype base:
   *
   *     [
   *       {
   *         name:      'data'                -- string   - Property name
   *         val:       function () {},       -- function - Api method (or undefined if just an object
   *         methodExt: [ ... ],              -- array    - Array of Api object definitions to extend the method result
   *         propExt:   [ ... ]               -- array    - Array of Api object definitions to extend the property
   *       },
   *       {
   *         name:     'row'
   *         val:       {},
   *         methodExt: [ ... ],
   *         propExt:   [
   *           {
   *             name:      'data'
   *             val:       function () {},
   *             methodExt: [ ... ],
   *             propExt:   [ ... ]
   *           },
   *           ...
   *         ]
   *       }
   *     ]
   *
   * @type {Array}
   * @ignore
   */
  var __apiStruct = [];

  /**
   * `Array.prototype` reference.
   *
   * @type object
   * @ignore
   */
  var __arrayProto = Array.prototype;

  /**
   * Abstraction for `context` parameter of the `Api` constructor to allow it to
   * take several different forms for ease of use.
   *
   * Each of the input parameter types will be converted to a DataTables settings
   * object where possible.
   *
   * @param  {string|node|jQuery|object} mixed DataTable identifier. Can be one
   *   of:
   *
   *   * `string` - jQuery selector. Any DataTables' matching the given selector
   *     with be found and used.
   *   * `node` - `TABLE` node which has already been formed into a DataTable.
   *   * `jQuery` - A jQuery object of `TABLE` nodes.
   *   * `object` - DataTables settings object
   *   * `DataTables.Api` - API instance
   * @return {array|null} Matching DataTables settings objects. `null` or
   *   `undefined` is returned if no matching DataTable is found.
   * @ignore
   */
  var _toSettings = function (mixed) {
    var idx, jq;
    var settings = DataTable.settings;
    var tables = _pluck(settings, "nTable");

    if (!mixed) {
      return [];
    } else if (mixed.nTable && mixed.oFeatures) {
      // DataTables settings object
      return [mixed];
    } else if (mixed.nodeName && mixed.nodeName.toLowerCase() === "table") {
      // Table node
      idx = tables.indexOf(mixed);
      return idx !== -1 ? [settings[idx]] : null;
    } else if (mixed && typeof mixed.settings === "function") {
      return mixed.settings().toArray();
    } else if (typeof mixed === "string") {
      // jQuery selector
      jq = $(mixed).get();
    } else if (mixed instanceof $) {
      // jQuery object (also DataTables instance)
      jq = mixed.get();
    }

    if (jq) {
      return settings.filter(function (v, idx) {
        return jq.includes(tables[idx]);
      });
    }
  };

  /**
   * DataTables API class - used to control and interface with  one or more
   * DataTables enhanced tables.
   *
   * The API class is heavily based on jQuery, presenting a chainable interface
   * that you can use to interact with tables. Each instance of the API class has
   * a "context" - i.e. the tables that it will operate on. This could be a single
   * table, all tables on a page or a sub-set thereof.
   *
   * Additionally the API is designed to allow you to easily work with the data in
   * the tables, retrieving and manipulating it as required. This is done by
   * presenting the API class as an array like interface. The contents of the
   * array depend upon the actions requested by each method (for example
   * `rows().nodes()` will return an array of nodes, while `rows().data()` will
   * return an array of objects or arrays depending upon your table's
   * configuration). The API object has a number of array like methods (`push`,
   * `pop`, `reverse` etc) as well as additional helper methods (`each`, `pluck`,
   * `unique` etc) to assist your working with the data held in a table.
   *
   * Most methods (those which return an Api instance) are chainable, which means
   * the return from a method call also has all of the methods available that the
   * top level object had. For example, these two calls are equivalent:
   *
   *     // Not chained
   *     api.row.add( {...} );
   *     api.draw();
   *
   *     // Chained
   *     api.row.add( {...} ).draw();
   *
   * @class DataTable.Api
   * @param {array|object|string|jQuery} context DataTable identifier. This is
   *   used to define which DataTables enhanced tables this API will operate on.
   *   Can be one of:
   *
   *   * `string` - jQuery selector. Any DataTables' matching the given selector
   *     with be found and used.
   *   * `node` - `TABLE` node which has already been formed into a DataTable.
   *   * `jQuery` - A jQuery object of `TABLE` nodes.
   *   * `object` - DataTables settings object
   * @param {array} [data] Data to initialise the Api instance with.
   *
   * @example
   *   // Direct initialisation during DataTables construction
   *   var api = $('#example').DataTable();
   *
   * @example
   *   // Initialisation using a DataTables jQuery object
   *   var api = $('#example').dataTable().api();
   *
   * @example
   *   // Initialisation as a constructor
   *   var api = new DataTable.Api( 'table.dataTable' );
   */
  _Api = function (context, data) {
    if (!(this instanceof _Api)) {
      return new _Api(context, data);
    }

    var settings = [];
    var ctxSettings = function (o) {
      var a = _toSettings(o);
      if (a) {
        settings.push.apply(settings, a);
      }
    };

    if (Array.isArray(context)) {
      for (var i = 0, ien = context.length; i < ien; i++) {
        ctxSettings(context[i]);
      }
    } else {
      ctxSettings(context);
    }

    // Remove duplicates
    this.context = settings.length > 1 ? _unique(settings) : settings;

    // Initial data
    if (data) {
      this.push.apply(this, data);
    }

    // selector
    this.selector = {
      rows: null,
      cols: null,
      opts: null,
    };

    _Api.extend(this, this, __apiStruct);
  };

  DataTable.Api = _Api;

  // Don't destroy the existing prototype, just extend it. Required for jQuery 2's
  // isPlainObject.
  $.extend(_Api.prototype, {
    any: function () {
      return this.count() !== 0;
    },

    context: [], // array of table settings objects

    count: function () {
      return this.flatten().length;
    },

    each: function (fn) {
      for (var i = 0, ien = this.length; i < ien; i++) {
        fn.call(this, this[i], i, this);
      }

      return this;
    },

    eq: function (idx) {
      var ctx = this.context;

      return ctx.length > idx ? new _Api(ctx[idx], this[idx]) : null;
    },

    filter: function (fn) {
      var a = __arrayProto.filter.call(this, fn, this);

      return new _Api(this.context, a);
    },

    flatten: function () {
      var a = [];

      return new _Api(this.context, a.concat.apply(a, this.toArray()));
    },

    get: function (idx) {
      return this[idx];
    },

    join: __arrayProto.join,

    includes: function (find) {
      return this.indexOf(find) === -1 ? false : true;
    },

    indexOf: __arrayProto.indexOf,

    iterator: function (flatten, type, fn, alwaysNew) {
      var a = [],
        ret,
        i,
        ien,
        j,
        jen,
        context = this.context,
        rows,
        items,
        item,
        selector = this.selector;

      // Argument shifting
      if (typeof flatten === "string") {
        alwaysNew = fn;
        fn = type;
        type = flatten;
        flatten = false;
      }

      for (i = 0, ien = context.length; i < ien; i++) {
        var apiInst = new _Api(context[i]);

        if (type === "table") {
          ret = fn.call(apiInst, context[i], i);

          if (ret !== undefined) {
            a.push(ret);
          }
        } else if (type === "columns" || type === "rows") {
          // this has same length as context - one entry for each table
          ret = fn.call(apiInst, context[i], this[i], i);

          if (ret !== undefined) {
            a.push(ret);
          }
        } else if (type === "every" || type === "column" || type === "column-rows" || type === "row" || type === "cell") {
          // columns and rows share the same structure.
          // 'this' is an array of column indexes for each context
          items = this[i];

          if (type === "column-rows") {
            rows = _selector_row_indexes(context[i], selector.opts);
          }

          for (j = 0, jen = items.length; j < jen; j++) {
            item = items[j];

            if (type === "cell") {
              ret = fn.call(apiInst, context[i], item.row, item.column, i, j);
            } else {
              ret = fn.call(apiInst, context[i], item, i, j, rows);
            }

            if (ret !== undefined) {
              a.push(ret);
            }
          }
        }
      }

      if (a.length || alwaysNew) {
        var api = new _Api(context, flatten ? a.concat.apply([], a) : a);
        var apiSelector = api.selector;
        apiSelector.rows = selector.rows;
        apiSelector.cols = selector.cols;
        apiSelector.opts = selector.opts;
        return api;
      }
      return this;
    },

    lastIndexOf: __arrayProto.lastIndexOf,

    length: 0,

    map: function (fn) {
      var a = __arrayProto.map.call(this, fn, this);

      return new _Api(this.context, a);
    },

    pluck: function (prop) {
      var fn = DataTable.util.get(prop);

      return this.map(function (el) {
        return fn(el);
      });
    },

    pop: __arrayProto.pop,

    push: __arrayProto.push,

    reduce: __arrayProto.reduce,

    reduceRight: __arrayProto.reduceRight,

    reverse: __arrayProto.reverse,

    // Object with rows, columns and opts
    selector: null,

    shift: __arrayProto.shift,

    slice: function () {
      return new _Api(this.context, this);
    },

    sort: __arrayProto.sort,

    splice: __arrayProto.splice,

    toArray: function () {
      return __arrayProto.slice.call(this);
    },

    to$: function () {
      return $(this);
    },

    toJQuery: function () {
      return $(this);
    },

    unique: function () {
      return new _Api(this.context, _unique(this.toArray()));
    },

    unshift: __arrayProto.unshift,
  });

  function _api_scope(scope, fn, struc) {
    return function () {
      var ret = fn.apply(scope || this, arguments);

      // Method extension
      _Api.extend(ret, ret, struc.methodExt);
      return ret;
    };
  }

  function _api_find(src, name) {
    for (var i = 0, ien = src.length; i < ien; i++) {
      if (src[i].name === name) {
        return src[i];
      }
    }
    return null;
  }

  window.__apiStruct = __apiStruct;

  _Api.extend = function (scope, obj, ext) {
    // Only extend API instances and static properties of the API
    if (!ext.length || !obj || (!(obj instanceof _Api) && !obj.__dt_wrapper)) {
      return;
    }

    var i, ien, struct;

    for (i = 0, ien = ext.length; i < ien; i++) {
      struct = ext[i];

      // Value
      obj[struct.name] = struct.type === "function" ? _api_scope(scope, struct.val, struct) : struct.type === "object" ? {} : struct.val;

      obj[struct.name].__dt_wrapper = true;

      // Property extension
      _Api.extend(scope, obj[struct.name], struct.propExt);
    }
  };

  //     [
  //       {
  //         name:      'data'                -- string   - Property name
  //         val:       function () {},       -- function - Api method (or undefined if just an object
  //         methodExt: [ ... ],              -- array    - Array of Api object definitions to extend the method result
  //         propExt:   [ ... ]               -- array    - Array of Api object definitions to extend the property
  //       },
  //       {
  //         name:     'row'
  //         val:       {},
  //         methodExt: [ ... ],
  //         propExt:   [
  //           {
  //             name:      'data'
  //             val:       function () {},
  //             methodExt: [ ... ],
  //             propExt:   [ ... ]
  //           },
  //           ...
  //         ]
  //       }
  //     ]

  _Api.register = _api_register = function (name, val) {
    if (Array.isArray(name)) {
      for (var j = 0, jen = name.length; j < jen; j++) {
        _Api.register(name[j], val);
      }
      return;
    }

    var i,
      ien,
      heir = name.split("."),
      struct = __apiStruct,
      key,
      method;

    for (i = 0, ien = heir.length; i < ien; i++) {
      method = heir[i].indexOf("()") !== -1;
      key = method ? heir[i].replace("()", "") : heir[i];

      var src = _api_find(struct, key);
      if (!src) {
        src = {
          name: key,
          val: {},
          methodExt: [],
          propExt: [],
          type: "object",
        };
        struct.push(src);
      }

      if (i === ien - 1) {
        src.val = val;
        src.type = typeof val === "function" ? "function" : $.isPlainObject(val) ? "object" : "other";
      } else {
        struct = method ? src.methodExt : src.propExt;
      }
    }
  };

  _Api.registerPlural = _api_registerPlural = function (pluralName, singularName, val) {
    _Api.register(pluralName, val);

    _Api.register(singularName, function () {
      var ret = val.apply(this, arguments);

      if (ret === this) {
        // Returned item is the API instance that was passed in, return it
        return this;
      } else if (ret instanceof _Api) {
        // New API instance returned, want the value from the first item
        // in the returned array for the singular result.
        return ret.length
          ? Array.isArray(ret[0])
            ? new _Api(ret.context, ret[0]) // Array results are 'enhanced'
            : ret[0]
          : undefined;
      }

      // Non-API return - just fire it back
      return ret;
    });
  };

  /**
   * Selector for HTML tables. Apply the given selector to the give array of
   * DataTables settings objects.
   *
   * @param {string|integer} [selector] jQuery selector string or integer
   * @param  {array} Array of DataTables settings objects to be filtered
   * @return {array}
   * @ignore
   */
  var __table_selector = function (selector, a) {
    if (Array.isArray(selector)) {
      var result = [];

      selector.forEach(function (sel) {
        var inner = __table_selector(sel, a);

        result.push.apply(result, inner);
      });

      return result.filter(function (item) {
        return item;
      });
    }

    // Integer is used to pick out a table by index
    if (typeof selector === "number") {
      return [a[selector]];
    }

    // Perform a jQuery selector on the table nodes
    var nodes = a.map(function (el) {
      return el.nTable;
    });

    return $(nodes)
      .filter(selector)
      .map(function () {
        // Need to translate back from the table node to the settings
        var idx = nodes.indexOf(this);
        return a[idx];
      })
      .toArray();
  };

  /**
   * Context selector for the API's context (i.e. the tables the API instance
   * refers to.
   *
   * @name    DataTable.Api#tables
   * @param {string|integer} [selector] Selector to pick which tables the iterator
   *   should operate on. If not given, all tables in the current context are
   *   used. This can be given as a jQuery selector (for example `':gt(0)'`) to
   *   select multiple tables or as an integer to select a single table.
   * @returns {DataTable.Api} Returns a new API instance if a selector is given.
   */
  _api_register("tables()", function (selector) {
    // A new instance is created if there was a selector specified
    return selector !== undefined && selector !== null ? new _Api(__table_selector(selector, this.context)) : this;
  });

  _api_register("table()", function (selector) {
    var tables = this.tables(selector);
    var ctx = tables.context;

    // Truncate to the first matched table
    return ctx.length ? new _Api(ctx[0]) : tables;
  });

  // Common methods, combined to reduce size
  [
    ["nodes", "node", "nTable"],
    ["body", "body", "nTBody"],
    ["header", "header", "nTHead"],
    ["footer", "footer", "nTFoot"],
  ].forEach(function (item) {
    _api_registerPlural("tables()." + item[0] + "()", "table()." + item[1] + "()", function () {
      return this.iterator(
        "table",
        function (ctx) {
          return ctx[item[2]];
        },
        1
      );
    });
  });

  // Structure methods
  [
    ["header", "aoHeader"],
    ["footer", "aoFooter"],
  ].forEach(function (item) {
    _api_register("table()." + item[0] + ".structure()", function (selector) {
      var indexes = this.columns(selector).indexes().flatten();
      var ctx = this.context[0];

      return _fnHeaderLayout(ctx, ctx[item[1]], indexes);
    });
  });

  _api_registerPlural("tables().containers()", "table().container()", function () {
    return this.iterator(
      "table",
      function (ctx) {
        return ctx.nTableWrapper;
      },
      1
    );
  });

  _api_register("tables().every()", function (fn) {
    var that = this;

    return this.iterator("table", function (s, i) {
      fn.call(that.table(i), i);
    });
  });

  _api_register("caption()", function (value, side) {
    var context = this.context;

    // Getter - return existing node's content
    if (value === undefined) {
      var caption = context[0].captionNode;

      return caption && context.length ? caption.innerHTML : null;
    }

    return this.iterator(
      "table",
      function (ctx) {
        var table = $(ctx.nTable);
        var caption = $(ctx.captionNode);
        var container = $(ctx.nTableWrapper);

        // Create the node if it doesn't exist yet
        if (!caption.length) {
          caption = $("<caption/>").html(value);
          ctx.captionNode = caption[0];

          // If side isn't set, we need to insert into the document to let the
          // CSS decide so we can read it back, otherwise there is no way to
          // know if the CSS would put it top or bottom for scrolling
          if (!side) {
            table.prepend(caption);

            side = caption.css("caption-side");
          }
        }

        caption.html(value);

        if (side) {
          caption.css("caption-side", side);
          caption[0]._captionSide = side;
        }

        if (container.find("div.dataTables_scroll").length) {
          var selector = side === "top" ? "Head" : "Foot";

          container.find("div.dataTables_scroll" + selector + " table").prepend(caption);
        } else {
          table.prepend(caption);
        }
      },
      1
    );
  });

  _api_register("caption.node()", function () {
    var ctx = this.context;

    return ctx.length ? ctx[0].captionNode : null;
  });

  /**
   * Redraw the tables in the current context.
   */
  _api_register("draw()", function (paging) {
    return this.iterator("table", function (settings) {
      if (paging === "page") {
        _fnDraw(settings);
      } else {
        if (typeof paging === "string") {
          paging = paging === "full-hold" ? false : true;
        }

        _fnReDraw(settings, paging === false);
      }
    });
  });

  /**
   * Get the current page index.
   *
   * @return {integer} Current page index (zero based)
   */ /**
   * Set the current page.
   *
   * Note that if you attempt to show a page which does not exist, DataTables will
   * not throw an error, but rather reset the paging.
   *
   * @param {integer|string} action The paging action to take. This can be one of:
   *  * `integer` - The page index to jump to
   *  * `string` - An action to take:
   *    * `first` - Jump to first page.
   *    * `next` - Jump to the next page
   *    * `previous` - Jump to previous page
   *    * `last` - Jump to the last page.
   * @returns {DataTables.Api} this
   */ _api_register("page()", function (action) {
    if (action === undefined) {
      return this.page.info().page; // not an expensive call
    }

    // else, have an action to take on all tables
    return this.iterator("table", function (settings) {
      _fnPageChange(settings, action);
    });
  });

  /**
   * Paging information for the first table in the current context.
   *
   * If you require paging information for another table, use the `table()` method
   * with a suitable selector.
   *
   * @return {object} Object with the following properties set:
   *  * `page` - Current page index (zero based - i.e. the first page is `0`)
   *  * `pages` - Total number of pages
   *  * `start` - Display index for the first record shown on the current page
   *  * `end` - Display index for the last record shown on the current page
   *  * `length` - Display length (number of records). Note that generally `start
   *    + length = end`, but this is not always true, for example if there are
   *    only 2 records to show on the final page, with a length of 10.
   *  * `recordsTotal` - Full data set length
   *  * `recordsDisplay` - Data set length once the current filtering criterion
   *    are applied.
   */
  _api_register("page.info()", function () {
    if (this.context.length === 0) {
      return undefined;
    }

    var settings = this.context[0],
      start = settings._iDisplayStart,
      len = settings.oFeatures.bPaginate ? settings._iDisplayLength : -1,
      visRecords = settings.fnRecordsDisplay(),
      all = len === -1;

    return {
      page: all ? 0 : Math.floor(start / len),
      pages: all ? 1 : Math.ceil(visRecords / len),
      start: start,
      end: settings.fnDisplayEnd(),
      length: len,
      recordsTotal: settings.fnRecordsTotal(),
      recordsDisplay: visRecords,
      serverSide: _fnDataSource(settings) === "ssp",
    };
  });

  /**
   * Get the current page length.
   *
   * @return {integer} Current page length. Note `-1` indicates that all records
   *   are to be shown.
   */ /**
   * Set the current page length.
   *
   * @param {integer} Page length to set. Use `-1` to show all records.
   * @returns {DataTables.Api} this
   */ _api_register("page.len()", function (len) {
    // Note that we can't call this function 'length()' because `length`
    // is a Javascript property of functions which defines how many arguments
    // the function expects.
    if (len === undefined) {
      return this.context.length !== 0 ? this.context[0]._iDisplayLength : undefined;
    }

    // else, set the page length
    return this.iterator("table", function (settings) {
      _fnLengthChange(settings, len);
    });
  });

  var __reload = function (settings, holdPosition, callback) {
    // Use the draw event to trigger a callback
    if (callback) {
      var api = new _Api(settings);

      api.one("draw", function () {
        callback(api.ajax.json());
      });
    }

    if (_fnDataSource(settings) == "ssp") {
      _fnReDraw(settings, holdPosition);
    } else {
      _fnProcessingDisplay(settings, true);

      // Cancel an existing request
      var xhr = settings.jqXHR;
      if (xhr && xhr.readyState !== 4) {
        xhr.abort();
      }

      // Trigger xhr
      _fnBuildAjax(settings, {}, function (json) {
        _fnClearTable(settings);

        var data = _fnAjaxDataSrc(settings, json);
        for (var i = 0, ien = data.length; i < ien; i++) {
          _fnAddData(settings, data[i]);
        }

        _fnReDraw(settings, holdPosition);
        _fnInitComplete(settings);
        _fnProcessingDisplay(settings, false);
      });
    }
  };

  /**
   * Get the JSON response from the last Ajax request that DataTables made to the
   * server. Note that this returns the JSON from the first table in the current
   * context.
   *
   * @return {object} JSON received from the server.
   */
  _api_register("ajax.json()", function () {
    var ctx = this.context;

    if (ctx.length > 0) {
      return ctx[0].json;
    }

    // else return undefined;
  });

  /**
   * Get the data submitted in the last Ajax request
   */
  _api_register("ajax.params()", function () {
    var ctx = this.context;

    if (ctx.length > 0) {
      return ctx[0].oAjaxData;
    }

    // else return undefined;
  });

  /**
   * Reload tables from the Ajax data source. Note that this function will
   * automatically re-draw the table when the remote data has been loaded.
   *
   * @param {boolean} [reset=true] Reset (default) or hold the current paging
   *   position. A full re-sort and re-filter is performed when this method is
   *   called, which is why the pagination reset is the default action.
   * @returns {DataTables.Api} this
   */
  _api_register("ajax.reload()", function (callback, resetPaging) {
    return this.iterator("table", function (settings) {
      __reload(settings, resetPaging === false, callback);
    });
  });

  /**
   * Get the current Ajax URL. Note that this returns the URL from the first
   * table in the current context.
   *
   * @return {string} Current Ajax source URL
   */ /**
   * Set the Ajax URL. Note that this will set the URL for all tables in the
   * current context.
   *
   * @param {string} url URL to set.
   * @returns {DataTables.Api} this
   */ _api_register("ajax.url()", function (url) {
    var ctx = this.context;

    if (url === undefined) {
      // get
      if (ctx.length === 0) {
        return undefined;
      }
      ctx = ctx[0];

      return $.isPlainObject(ctx.ajax) ? ctx.ajax.url : ctx.ajax;
    }

    // set
    return this.iterator("table", function (settings) {
      if ($.isPlainObject(settings.ajax)) {
        settings.ajax.url = url;
      } else {
        settings.ajax = url;
      }
    });
  });

  /**
   * Load data from the newly set Ajax URL. Note that this method is only
   * available when `ajax.url()` is used to set a URL. Additionally, this method
   * has the same effect as calling `ajax.reload()` but is provided for
   * convenience when setting a new URL. Like `ajax.reload()` it will
   * automatically redraw the table once the remote data has been loaded.
   *
   * @returns {DataTables.Api} this
   */
  _api_register("ajax.url().load()", function (callback, resetPaging) {
    // Same as a reload, but makes sense to present it for easy access after a
    // url change
    return this.iterator("table", function (ctx) {
      __reload(ctx, resetPaging === false, callback);
    });
  });

  var _selector_run = function (type, selector, selectFn, settings, opts) {
    var out = [],
      res,
      a,
      i,
      ien,
      j,
      jen,
      selectorType = typeof selector;

    // Can't just check for isArray here, as an API or jQuery instance might be
    // given with their array like look
    if (!selector || selectorType === "string" || selectorType === "function" || selector.length === undefined) {
      selector = [selector];
    }

    for (i = 0, ien = selector.length; i < ien; i++) {
      // Only split on simple strings - complex expressions will be jQuery selectors
      a = selector[i] && selector[i].split && !selector[i].match(/[[(:]/) ? selector[i].split(",") : [selector[i]];

      for (j = 0, jen = a.length; j < jen; j++) {
        res = selectFn(typeof a[j] === "string" ? a[j].trim() : a[j]);

        // Remove empty items
        res = res.filter(function (item) {
          return item !== null && item !== undefined;
        });

        if (res && res.length) {
          out = out.concat(res);
        }
      }
    }

    // selector extensions
    var ext = _ext.selector[type];
    if (ext.length) {
      for (i = 0, ien = ext.length; i < ien; i++) {
        out = ext[i](settings, opts, out);
      }
    }

    return _unique(out);
  };

  var _selector_opts = function (opts) {
    if (!opts) {
      opts = {};
    }

    // Backwards compatibility for 1.9- which used the terminology filter rather
    // than search
    if (opts.filter && opts.search === undefined) {
      opts.search = opts.filter;
    }

    return $.extend(
      {
        search: "none",
        order: "current",
        page: "all",
      },
      opts
    );
  };

  // Reduce the API instance to the first item found
  var _selector_first = function (old) {
    let inst = new _Api(old.context[0]);

    // Use a push rather than passing to the constructor, since it will
    // merge arrays down automatically, which isn't what is wanted here
    if (old.length) {
      inst.push(old[0]);
    }

    inst.selector = old.selector;

    // Limit to a single row / column / cell
    if (inst.length && inst[0].length > 1) {
      inst[0].splice(1);
    }

    return inst;
  };

  var _selector_row_indexes = function (settings, opts) {
    var i,
      ien,
      tmp,
      a = [],
      displayFiltered = settings.aiDisplay,
      displayMaster = settings.aiDisplayMaster;

    var search = opts.search, // none, applied, removed
      order = opts.order, // applied, current, index (original - compatibility with 1.9)
      page = opts.page; // all, current

    if (_fnDataSource(settings) == "ssp") {
      // In server-side processing mode, most options are irrelevant since
      // rows not shown don't exist and the index order is the applied order
      // Removed is a special case - for consistency just return an empty
      // array
      return search === "removed" ? [] : _range(0, displayMaster.length);
    } else if (page == "current") {
      // Current page implies that order=current and filter=applied, since it is
      // fairly senseless otherwise, regardless of what order and search actually
      // are
      for (i = settings._iDisplayStart, ien = settings.fnDisplayEnd(); i < ien; i++) {
        a.push(displayFiltered[i]);
      }
    } else if (order == "current" || order == "applied") {
      if (search == "none") {
        a = displayMaster.slice();
      } else if (search == "applied") {
        a = displayFiltered.slice();
      } else if (search == "removed") {
        // O(n+m) solution by creating a hash map
        var displayFilteredMap = {};

        for (i = 0, ien = displayFiltered.length; i < ien; i++) {
          displayFilteredMap[displayFiltered[i]] = null;
        }

        displayMaster.forEach(function (item) {
          if (!Object.prototype.hasOwnProperty.call(displayFilteredMap, item)) {
            a.push(item);
          }
        });
      }
    } else if (order == "index" || order == "original") {
      for (i = 0, ien = settings.aoData.length; i < ien; i++) {
        if (!settings.aoData[i]) {
          continue;
        }

        if (search == "none") {
          a.push(i);
        } else {
          // applied | removed
          tmp = displayFiltered.indexOf(i);

          if ((tmp === -1 && search == "removed") || (tmp >= 0 && search == "applied")) {
            a.push(i);
          }
        }
      }
    } else if (typeof order === "number") {
      // Order the rows by the given column
      var ordered = _fnSort(settings, order, "asc");

      if (search === "none") {
        a = ordered;
      } else {
        // applied | removed
        for (i = 0; i < ordered.length; i++) {
          tmp = displayFiltered.indexOf(ordered[i]);

          if ((tmp === -1 && search == "removed") || (tmp >= 0 && search == "applied")) {
            a.push(ordered[i]);
          }
        }
      }
    }

    return a;
  };

  /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   * Rows
   *
   * {}          - no selector - use all available rows
   * {integer}   - row aoData index
   * {node}      - TR node
   * {string}    - jQuery selector to apply to the TR elements
   * {array}     - jQuery array of nodes, or simply an array of TR nodes
   *
   */
  var __row_selector = function (settings, selector, opts) {
    var rows;
    var run = function (sel) {
      var selInt = _intVal(sel);
      var aoData = settings.aoData;

      // Short cut - selector is a number and no options provided (default is
      // all records, so no need to check if the index is in there, since it
      // must be - dev error if the index doesn't exist).
      if (selInt !== null && !opts) {
        return [selInt];
      }

      if (!rows) {
        rows = _selector_row_indexes(settings, opts);
      }

      if (selInt !== null && rows.indexOf(selInt) !== -1) {
        // Selector - integer
        return [selInt];
      } else if (sel === null || sel === undefined || sel === "") {
        // Selector - none
        return rows;
      }

      // Selector - function
      if (typeof sel === "function") {
        return rows.map(function (idx) {
          var row = aoData[idx];
          return sel(idx, row._aData, row.nTr) ? idx : null;
        });
      }

      // Selector - node
      if (sel.nodeName) {
        var rowIdx = sel._DT_RowIndex; // Property added by DT for fast lookup
        var cellIdx = sel._DT_CellIndex;

        if (rowIdx !== undefined) {
          // Make sure that the row is actually still present in the table
          return aoData[rowIdx] && aoData[rowIdx].nTr === sel ? [rowIdx] : [];
        } else if (cellIdx) {
          return aoData[cellIdx.row] && aoData[cellIdx.row].nTr === sel.parentNode ? [cellIdx.row] : [];
        } else {
          var host = $(sel).closest("*[data-dt-row]");
          return host.length ? [host.data("dt-row")] : [];
        }
      }

      // ID selector. Want to always be able to select rows by id, regardless
      // of if the tr element has been created or not, so can't rely upon
      // jQuery here - hence a custom implementation. This does not match
      // Sizzle's fast selector or HTML4 - in HTML5 the ID can be anything,
      // but to select it using a CSS selector engine (like Sizzle or
      // querySelect) it would need to need to be escaped for some characters.
      // DataTables simplifies this for row selectors since you can select
      // only a row. A # indicates an id any anything that follows is the id -
      // unescaped.
      if (typeof sel === "string" && sel.charAt(0) === "#") {
        // get row index from id
        var rowObj = settings.aIds[sel.replace(/^#/, "")];
        if (rowObj !== undefined) {
          return [rowObj.idx];
        }

        // need to fall through to jQuery in case there is DOM id that
        // matches
      }

      // Get nodes in the order from the `rows` array with null values removed
      var nodes = _removeEmpty(_pluck_order(settings.aoData, rows, "nTr"));

      // Selector - jQuery selector string, array of nodes or jQuery object/
      // As jQuery's .filter() allows jQuery objects to be passed in filter,
      // it also allows arrays, so this will cope with all three options
      return $(nodes)
        .filter(sel)
        .map(function () {
          return this._DT_RowIndex;
        })
        .toArray();
    };

    var matched = _selector_run("row", selector, run, settings, opts);

    if (opts.order === "current" || opts.order === "applied") {
      var master = settings.aiDisplayMaster;

      matched.sort(function (a, b) {
        return master.indexOf(a) - master.indexOf(b);
      });
    }

    return matched;
  };

  _api_register("rows()", function (selector, opts) {
    // argument shifting
    if (selector === undefined) {
      selector = "";
    } else if ($.isPlainObject(selector)) {
      opts = selector;
      selector = "";
    }

    opts = _selector_opts(opts);

    var inst = this.iterator(
      "table",
      function (settings) {
        return __row_selector(settings, selector, opts);
      },
      1
    );

    // Want argument shifting here and in __row_selector?
    inst.selector.rows = selector;
    inst.selector.opts = opts;

    return inst;
  });

  _api_register("rows().nodes()", function () {
    return this.iterator(
      "row",
      function (settings, row) {
        return settings.aoData[row].nTr || undefined;
      },
      1
    );
  });

  _api_register("rows().data()", function () {
    return this.iterator(
      true,
      "rows",
      function (settings, rows) {
        return _pluck_order(settings.aoData, rows, "_aData");
      },
      1
    );
  });

  _api_registerPlural("rows().cache()", "row().cache()", function (type) {
    return this.iterator(
      "row",
      function (settings, row) {
        var r = settings.aoData[row];
        return type === "search" ? r._aFilterData : r._aSortData;
      },
      1
    );
  });

  _api_registerPlural("rows().invalidate()", "row().invalidate()", function (src) {
    return this.iterator("row", function (settings, row) {
      _fnInvalidate(settings, row, src);
    });
  });

  _api_registerPlural("rows().indexes()", "row().index()", function () {
    return this.iterator(
      "row",
      function (settings, row) {
        return row;
      },
      1
    );
  });

  _api_registerPlural("rows().ids()", "row().id()", function (hash) {
    var a = [];
    var context = this.context;

    // `iterator` will drop undefined values, but in this case we want them
    for (var i = 0, ien = context.length; i < ien; i++) {
      for (var j = 0, jen = this[i].length; j < jen; j++) {
        var id = context[i].rowIdFn(context[i].aoData[this[i][j]]._aData);
        a.push((hash === true ? "#" : "") + id);
      }
    }

    return new _Api(context, a);
  });

  _api_registerPlural("rows().remove()", "row().remove()", function () {
    this.iterator("row", function (settings, row) {
      var data = settings.aoData;
      var rowData = data[row];

      // Delete from the display arrays
      var idx = settings.aiDisplayMaster.indexOf(row);
      if (idx !== -1) {
        settings.aiDisplayMaster.splice(idx, 1);
      }

      idx = settings.aiDisplay.indexOf(row);
      if (idx !== -1) {
        settings.aiDisplay.splice(idx, 1);
      }

      // For server-side processing tables - subtract the deleted row from the count
      if (settings._iRecordsDisplay > 0) {
        settings._iRecordsDisplay--;
      }

      // Check for an 'overflow' they case for displaying the table
      _fnLengthOverflow(settings);

      // Remove the row's ID reference if there is one
      var id = settings.rowIdFn(rowData._aData);
      if (id !== undefined) {
        delete settings.aIds[id];
      }

      data[row] = null;
    });

    return this;
  });

  _api_register("rows.add()", function (rows) {
    var newRows = this.iterator(
      "table",
      function (settings) {
        var row, i, ien;
        var out = [];

        for (i = 0, ien = rows.length; i < ien; i++) {
          row = rows[i];

          if (row.nodeName && row.nodeName.toUpperCase() === "TR") {
            out.push(_fnAddTr(settings, row)[0]);
          } else {
            out.push(_fnAddData(settings, row));
          }
        }

        return out;
      },
      1
    );

    // Return an Api.rows() extended instance, so rows().nodes() etc can be used
    var modRows = this.rows(-1);
    modRows.pop();
    modRows.push.apply(modRows, newRows);

    return modRows;
  });

  /**
   *
   */
  _api_register("row()", function (selector, opts) {
    return _selector_first(this.rows(selector, opts));
  });

  _api_register("row().data()", function (data) {
    var ctx = this.context;

    if (data === undefined) {
      // Get
      return ctx.length && this.length && this[0].length ? ctx[0].aoData[this[0]]._aData : undefined;
    }

    // Set
    var row = ctx[0].aoData[this[0]];
    row._aData = data;

    // If the DOM has an id, and the data source is an array
    if (Array.isArray(data) && row.nTr && row.nTr.id) {
      _fnSetObjectDataFn(ctx[0].rowId)(data, row.nTr.id);
    }

    // Automatically invalidate
    _fnInvalidate(ctx[0], this[0], "data");

    return this;
  });

  _api_register("row().node()", function () {
    var ctx = this.context;

    return ctx.length && this.length && this[0].length ? ctx[0].aoData[this[0]].nTr || null : null;
  });

  _api_register("row.add()", function (row) {
    // Allow a jQuery object to be passed in - only a single row is added from
    // it though - the first element in the set
    if (row instanceof $ && row.length) {
      row = row[0];
    }

    var rows = this.iterator("table", function (settings) {
      if (row.nodeName && row.nodeName.toUpperCase() === "TR") {
        return _fnAddTr(settings, row)[0];
      }
      return _fnAddData(settings, row);
    });

    // Return an Api.rows() extended instance, with the newly added row selected
    return this.row(rows[0]);
  });

  $(document).on("plugin-init.dt", function (e, context) {
    var api = new _Api(context);

    api.on("stateSaveParams.DT", function (e, settings, d) {
      // This could be more compact with the API, but it is a lot faster as a simple
      // internal loop
      var idFn = settings.rowIdFn;
      var rows = settings.aiDisplayMaster;
      var ids = [];

      for (var i = 0; i < rows.length; i++) {
        var rowIdx = rows[i];
        var data = settings.aoData[rowIdx];

        if (data._detailsShow) {
          ids.push("#" + idFn(data._aData));
        }
      }

      d.childRows = ids;
    });

    // For future state loads (e.g. with StateRestore)
    api.on("stateLoaded.DT", function (e, settings, state) {
      __details_state_load(api, state);
    });

    // And the initial load state
    __details_state_load(api, api.state.loaded());
  });

  var __details_state_load = function (api, state) {
    if (state && state.childRows) {
      api
        .rows(
          state.childRows.map(function (id) {
            return id.replace(/:/g, "\\:");
          })
        )
        .every(function () {
          _fnCallbackFire(api.settings()[0], null, "requestChild", [this]);
        });
    }
  };

  var __details_add = function (ctx, row, data, klass) {
    // Convert to array of TR elements
    var rows = [];
    var addRow = function (r, k) {
      // Recursion to allow for arrays of jQuery objects
      if (Array.isArray(r) || r instanceof $) {
        for (var i = 0, ien = r.length; i < ien; i++) {
          addRow(r[i], k);
        }
        return;
      }

      // If we get a TR element, then just add it directly - up to the dev
      // to add the correct number of columns etc
      if (r.nodeName && r.nodeName.toLowerCase() === "tr") {
        r.setAttribute("data-dt-row", row.idx);
        rows.push(r);
      } else {
        // Otherwise create a row with a wrapper
        var created = $("<tr><td></td></tr>").attr("data-dt-row", row.idx).addClass(k);

        $("td", created).addClass(k).html(r)[0].colSpan = _fnVisbleColumns(ctx);

        rows.push(created[0]);
      }
    };

    addRow(data, klass);

    if (row._details) {
      row._details.detach();
    }

    row._details = $(rows);

    // If the children were already shown, that state should be retained
    if (row._detailsShow) {
      row._details.insertAfter(row.nTr);
    }
  };

  // Make state saving of child row details async to allow them to be batch processed
  var __details_state = DataTable.util.throttle(function (ctx) {
    _fnSaveState(ctx[0]);
  }, 500);

  var __details_remove = function (api, idx) {
    var ctx = api.context;

    if (ctx.length) {
      var row = ctx[0].aoData[idx !== undefined ? idx : api[0]];

      if (row && row._details) {
        row._details.remove();

        row._detailsShow = undefined;
        row._details = undefined;
        $(row.nTr).removeClass("dt-hasChild");
        __details_state(ctx);
      }
    }
  };

  var __details_display = function (api, show) {
    var ctx = api.context;

    if (ctx.length && api.length) {
      var row = ctx[0].aoData[api[0]];

      if (row._details) {
        row._detailsShow = show;

        if (show) {
          row._details.insertAfter(row.nTr);
          $(row.nTr).addClass("dt-hasChild");
        } else {
          row._details.detach();
          $(row.nTr).removeClass("dt-hasChild");
        }

        _fnCallbackFire(ctx[0], null, "childRow", [show, api.row(api[0])]);

        __details_events(ctx[0]);
        __details_state(ctx);
      }
    }
  };

  var __details_events = function (settings) {
    var api = new _Api(settings);
    var namespace = ".dt.DT_details";
    var drawEvent = "draw" + namespace;
    var colvisEvent = "column-sizing" + namespace;
    var destroyEvent = "destroy" + namespace;
    var data = settings.aoData;

    api.off(drawEvent + " " + colvisEvent + " " + destroyEvent);

    if (_pluck(data, "_details").length > 0) {
      // On each draw, insert the required elements into the document
      api.on(drawEvent, function (e, ctx) {
        if (settings !== ctx) {
          return;
        }

        api
          .rows({ page: "current" })
          .eq(0)
          .each(function (idx) {
            // Internal data grab
            var row = data[idx];

            if (row._detailsShow) {
              row._details.insertAfter(row.nTr);
            }
          });
      });

      // Column visibility change - update the colspan
      api.on(colvisEvent, function (e, ctx) {
        if (settings !== ctx) {
          return;
        }

        // Update the colspan for the details rows (note, only if it already has
        // a colspan)
        var row,
          visible = _fnVisbleColumns(ctx);

        for (var i = 0, ien = data.length; i < ien; i++) {
          row = data[i];

          if (row._details) {
            row._details.each(function () {
              var el = $(this).children("td");

              if (el.length == 1) {
                el.attr("colspan", visible);
              }
            });
          }
        }
      });

      // Table destroyed - nuke any child rows
      api.on(destroyEvent, function (e, ctx) {
        if (settings !== ctx) {
          return;
        }

        for (var i = 0, ien = data.length; i < ien; i++) {
          if (data[i]._details) {
            __details_remove(api, i);
          }
        }
      });
    }
  };

  // Strings for the method names to help minification
  var _emp = "";
  var _child_obj = _emp + "row().child";
  var _child_mth = _child_obj + "()";

  // data can be:
  //  tr
  //  string
  //  jQuery or array of any of the above
  _api_register(_child_mth, function (data, klass) {
    var ctx = this.context;

    if (data === undefined) {
      // get
      return ctx.length && this.length ? ctx[0].aoData[this[0]]._details : undefined;
    } else if (data === true) {
      // show
      this.child.show();
    } else if (data === false) {
      // remove
      __details_remove(this);
    } else if (ctx.length && this.length) {
      // set
      __details_add(ctx[0], ctx[0].aoData[this[0]], data, klass);
    }

    return this;
  });

  _api_register(
    [
      _child_obj + ".show()",
      _child_mth + ".show()", // only when `child()` was called with parameters (without
    ],
    function () {
      // it returns an object and this method is not executed)
      __details_display(this, true);
      return this;
    }
  );

  _api_register(
    [
      _child_obj + ".hide()",
      _child_mth + ".hide()", // only when `child()` was called with parameters (without
    ],
    function () {
      // it returns an object and this method is not executed)
      __details_display(this, false);
      return this;
    }
  );

  _api_register(
    [
      _child_obj + ".remove()",
      _child_mth + ".remove()", // only when `child()` was called with parameters (without
    ],
    function () {
      // it returns an object and this method is not executed)
      __details_remove(this);
      return this;
    }
  );

  _api_register(_child_obj + ".isShown()", function () {
    var ctx = this.context;

    if (ctx.length && this.length) {
      // _detailsShown as false or undefined will fall through to return false
      return ctx[0].aoData[this[0]]._detailsShow || false;
    }
    return false;
  });

  /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   * Columns
   *
   * {integer}           - column index (>=0 count from left, <0 count from right)
   * "{integer}:visIdx"  - visible column index (i.e. translate to column index)  (>=0 count from left, <0 count from right)
   * "{integer}:visible" - alias for {integer}:visIdx  (>=0 count from left, <0 count from right)
   * "{string}:name"     - column name
   * "{string}"          - jQuery selector on column header nodes
   *
   */

  // can be an array of these items, comma separated list, or an array of comma
  // separated lists

  var __re_column_selector = /^([^:]+):(name|title|visIdx|visible)$/;

  // r1 and r2 are redundant - but it means that the parameters match for the
  // iterator callback in columns().data()
  var __columnData = function (settings, column, r1, r2, rows, type) {
    var a = [];
    for (var row = 0, ien = rows.length; row < ien; row++) {
      a.push(_fnGetCellData(settings, rows[row], column, type));
    }
    return a;
  };

  var __column_selector = function (settings, selector, opts) {
    var columns = settings.aoColumns,
      names = _pluck(columns, "sName"),
      titles = _pluck(columns, "sTitle"),
      cells = DataTable.util.get("[].[].cell")(settings.aoHeader),
      nodes = _unique(_flatten([], cells));

    var run = function (s) {
      var selInt = _intVal(s);

      // Selector - all
      if (s === "") {
        return _range(columns.length);
      }

      // Selector - index
      if (selInt !== null) {
        return [
          selInt >= 0
            ? selInt // Count from left
            : columns.length + selInt, // Count from right (+ because its a negative value)
        ];
      }

      // Selector = function
      if (typeof s === "function") {
        var rows = _selector_row_indexes(settings, opts);

        return columns.map(function (col, idx) {
          return s(idx, __columnData(settings, idx, 0, 0, rows)) ? idx : null;
        });
      }

      // jQuery or string selector
      var match = typeof s === "string" ? s.match(__re_column_selector) : "";

      if (match) {
        switch (match[2]) {
          case "visIdx":
          case "visible":
            var idx = parseInt(match[1], 10);
            // Visible index given, convert to column index
            if (idx < 0) {
              // Counting from the right
              var visColumns = columns.map(function (col, i) {
                return col.bVisible ? i : null;
              });
              return [visColumns[visColumns.length + idx]];
            }
            // Counting from the left
            return [_fnVisibleToColumnIndex(settings, idx)];

          case "name":
            // match by name. `names` is column index complete and in order
            return names.map(function (name, i) {
              return name === match[1] ? i : null;
            });

          case "title":
            // match by column title
            return titles.map(function (title, i) {
              return title === match[1] ? i : null;
            });

          default:
            return [];
        }
      }

      // Cell in the table body
      if (s.nodeName && s._DT_CellIndex) {
        return [s._DT_CellIndex.column];
      }

      // jQuery selector on the TH elements for the columns
      var jqResult = $(nodes)
        .filter(s)
        .map(function () {
          return _fnColumnsFromHeader(this); // `nodes` is column index complete and in order
        })
        .toArray();

      if (jqResult.length || !s.nodeName) {
        return jqResult;
      }

      // Otherwise a node which might have a `dt-column` data attribute, or be
      // a child or such an element
      var host = $(s).closest("*[data-dt-column]");
      return host.length ? [host.data("dt-column")] : [];
    };

    return _selector_run("column", selector, run, settings, opts);
  };

  var __setColumnVis = function (settings, column, vis) {
    var cols = settings.aoColumns,
      col = cols[column],
      data = settings.aoData,
      cells,
      i,
      ien,
      tr;

    // Get
    if (vis === undefined) {
      return col.bVisible;
    }

    // Set
    // No change
    if (col.bVisible === vis) {
      return false;
    }

    if (vis) {
      // Insert column
      // Need to decide if we should use appendChild or insertBefore
      var insertBefore = _pluck(cols, "bVisible").indexOf(true, column + 1);

      for (i = 0, ien = data.length; i < ien; i++) {
        if (data[i]) {
          tr = data[i].nTr;
          cells = data[i].anCells;

          if (tr) {
            // insertBefore can act like appendChild if 2nd arg is null
            tr.insertBefore(cells[column], cells[insertBefore] || null);
          }
        }
      }
    } else {
      // Remove column
      $(_pluck(settings.aoData, "anCells", column)).detach();
    }

    // Common actions
    col.bVisible = vis;

    _colGroup(settings);

    return true;
  };

  _api_register("columns()", function (selector, opts) {
    // argument shifting
    if (selector === undefined) {
      selector = "";
    } else if ($.isPlainObject(selector)) {
      opts = selector;
      selector = "";
    }

    opts = _selector_opts(opts);

    var inst = this.iterator(
      "table",
      function (settings) {
        return __column_selector(settings, selector, opts);
      },
      1
    );

    // Want argument shifting here and in _row_selector?
    inst.selector.cols = selector;
    inst.selector.opts = opts;

    return inst;
  });

  _api_registerPlural("columns().header()", "column().header()", function (row) {
    return this.iterator(
      "column",
      function (settings, column) {
        var header = settings.aoHeader;
        var target =
          row !== undefined
            ? row
            : settings.bSortCellsTop // legacy support
            ? 0
            : header.length - 1;

        return header[target][column].cell;
      },
      1
    );
  });

  _api_registerPlural("columns().footer()", "column().footer()", function (row) {
    return this.iterator(
      "column",
      function (settings, column) {
        var footer = settings.aoFooter;

        if (!footer.length) {
          return null;
        }

        return settings.aoFooter[row !== undefined ? row : 0][column].cell;
      },
      1
    );
  });

  _api_registerPlural("columns().data()", "column().data()", function () {
    return this.iterator("column-rows", __columnData, 1);
  });

  _api_registerPlural("columns().render()", "column().render()", function (type) {
    return this.iterator(
      "column-rows",
      function (settings, column, i, j, rows) {
        return __columnData(settings, column, i, j, rows, type);
      },
      1
    );
  });

  _api_registerPlural("columns().dataSrc()", "column().dataSrc()", function () {
    return this.iterator(
      "column",
      function (settings, column) {
        return settings.aoColumns[column].mData;
      },
      1
    );
  });

  _api_registerPlural("columns().cache()", "column().cache()", function (type) {
    return this.iterator(
      "column-rows",
      function (settings, column, i, j, rows) {
        return _pluck_order(settings.aoData, rows, type === "search" ? "_aFilterData" : "_aSortData", column);
      },
      1
    );
  });

  _api_registerPlural("columns().init()", "column().init()", function () {
    return this.iterator(
      "column",
      function (settings, column) {
        return settings.aoColumns[column];
      },
      1
    );
  });

  _api_registerPlural("columns().nodes()", "column().nodes()", function () {
    return this.iterator(
      "column-rows",
      function (settings, column, i, j, rows) {
        return _pluck_order(settings.aoData, rows, "anCells", column);
      },
      1
    );
  });

  _api_registerPlural("columns().titles()", "column().title()", function (title, row) {
    return this.iterator(
      "column",
      function (settings, column) {
        // Argument shifting
        if (typeof title === "number") {
          row = title;
          title = undefined;
        }

        var span = $("span.dt-column-title", this.column(column).header(row));

        if (title !== undefined) {
          span.html(title);
          return this;
        }

        return span.html();
      },
      1
    );
  });

  _api_registerPlural("columns().types()", "column().type()", function () {
    return this.iterator(
      "column",
      function (settings, column) {
        var type = settings.aoColumns[column].sType;

        // If the type was invalidated, then resolve it. This actually does
        // all columns at the moment. Would only happen once if getting all
        // column's data types.
        if (!type) {
          _fnColumnTypes(settings);
        }

        return type;
      },
      1
    );
  });

  _api_registerPlural("columns().visible()", "column().visible()", function (vis, calc) {
    var that = this;
    var changed = [];
    var ret = this.iterator("column", function (settings, column) {
      if (vis === undefined) {
        return settings.aoColumns[column].bVisible;
      } // else

      if (__setColumnVis(settings, column, vis)) {
        changed.push(column);
      }
    });

    // Group the column visibility changes
    if (vis !== undefined) {
      this.iterator("table", function (settings) {
        // Redraw the header after changes
        _fnDrawHead(settings, settings.aoHeader);
        _fnDrawHead(settings, settings.aoFooter);

        // Update colspan for no records display. Child rows and extensions will use their own
        // listeners to do this - only need to update the empty table item here
        if (!settings.aiDisplay.length) {
          $(settings.nTBody).find("td[colspan]").attr("colspan", _fnVisbleColumns(settings));
        }

        _fnSaveState(settings);

        // Second loop once the first is done for events
        that.iterator("column", function (settings, column) {
          if (changed.includes(column)) {
            _fnCallbackFire(settings, null, "column-visibility", [settings, column, vis, calc]);
          }
        });

        if (changed.length && (calc === undefined || calc)) {
          that.columns.adjust();
        }
      });
    }

    return ret;
  });

  _api_registerPlural("columns().widths()", "column().width()", function () {
    // Injects a fake row into the table for just a moment so the widths can
    // be read, regardless of colspan in the header and rows being present in
    // the body
    var columns = this.columns(":visible").count();
    var row = $("<tr>").html("<td>" + Array(columns).join("</td><td>") + "</td>");

    $(this.table().body()).append(row);

    var widths = row.children().map(function () {
      return $(this).outerWidth();
    });

    row.remove();

    return this.iterator(
      "column",
      function (settings, column) {
        var visIdx = _fnColumnIndexToVisible(settings, column);

        return visIdx !== null ? widths[visIdx] : 0;
      },
      1
    );
  });

  _api_registerPlural("columns().indexes()", "column().index()", function (type) {
    return this.iterator(
      "column",
      function (settings, column) {
        return type === "visible" ? _fnColumnIndexToVisible(settings, column) : column;
      },
      1
    );
  });

  _api_register("columns.adjust()", function () {
    return this.iterator(
      "table",
      function (settings) {
        _fnAdjustColumnSizing(settings);
      },
      1
    );
  });

  _api_register("column.index()", function (type, idx) {
    if (this.context.length !== 0) {
      var ctx = this.context[0];

      if (type === "fromVisible" || type === "toData") {
        return _fnVisibleToColumnIndex(ctx, idx);
      } else if (type === "fromData" || type === "toVisible") {
        return _fnColumnIndexToVisible(ctx, idx);
      }
    }
  });

  _api_register("column()", function (selector, opts) {
    return _selector_first(this.columns(selector, opts));
  });

  var __cell_selector = function (settings, selector, opts) {
    var data = settings.aoData;
    var rows = _selector_row_indexes(settings, opts);
    var cells = _removeEmpty(_pluck_order(data, rows, "anCells"));
    var allCells = $(_flatten([], cells));
    var row;
    var columns = settings.aoColumns.length;
    var a, i, ien, j, o, host;

    var run = function (s) {
      var fnSelector = typeof s === "function";

      if (s === null || s === undefined || fnSelector) {
        // All cells and function selectors
        a = [];

        for (i = 0, ien = rows.length; i < ien; i++) {
          row = rows[i];

          for (j = 0; j < columns; j++) {
            o = {
              row: row,
              column: j,
            };

            if (fnSelector) {
              // Selector - function
              host = data[row];

              if (s(o, _fnGetCellData(settings, row, j), host.anCells ? host.anCells[j] : null)) {
                a.push(o);
              }
            } else {
              // Selector - all
              a.push(o);
            }
          }
        }

        return a;
      }

      // Selector - index
      if ($.isPlainObject(s)) {
        // Valid cell index and its in the array of selectable rows
        return s.column !== undefined && s.row !== undefined && rows.indexOf(s.row) !== -1 ? [s] : [];
      }

      // Selector - jQuery filtered cells
      var jqResult = allCells
        .filter(s)
        .map(function (i, el) {
          return {
            // use a new object, in case someone changes the values
            row: el._DT_CellIndex.row,
            column: el._DT_CellIndex.column,
          };
        })
        .toArray();

      if (jqResult.length || !s.nodeName) {
        return jqResult;
      }

      // Otherwise the selector is a node, and there is one last option - the
      // element might be a child of an element which has dt-row and dt-column
      // data attributes
      host = $(s).closest("*[data-dt-row]");
      return host.length
        ? [
            {
              row: host.data("dt-row"),
              column: host.data("dt-column"),
            },
          ]
        : [];
    };

    return _selector_run("cell", selector, run, settings, opts);
  };

  _api_register("cells()", function (rowSelector, columnSelector, opts) {
    // Argument shifting
    if ($.isPlainObject(rowSelector)) {
      // Indexes
      if (rowSelector.row === undefined) {
        // Selector options in first parameter
        opts = rowSelector;
        rowSelector = null;
      } else {
        // Cell index objects in first parameter
        opts = columnSelector;
        columnSelector = null;
      }
    }
    if ($.isPlainObject(columnSelector)) {
      opts = columnSelector;
      columnSelector = null;
    }

    // Cell selector
    if (columnSelector === null || columnSelector === undefined) {
      return this.iterator("table", function (settings) {
        return __cell_selector(settings, rowSelector, _selector_opts(opts));
      });
    }

    // The default built in options need to apply to row and columns
    var internalOpts = opts
      ? {
          page: opts.page,
          order: opts.order,
          search: opts.search,
        }
      : {};

    // Row + column selector
    var columns = this.columns(columnSelector, internalOpts);
    var rows = this.rows(rowSelector, internalOpts);
    var i, ien, j, jen;

    var cellsNoOpts = this.iterator(
      "table",
      function (settings, idx) {
        var a = [];

        for (i = 0, ien = rows[idx].length; i < ien; i++) {
          for (j = 0, jen = columns[idx].length; j < jen; j++) {
            a.push({
              row: rows[idx][i],
              column: columns[idx][j],
            });
          }
        }

        return a;
      },
      1
    );

    // There is currently only one extension which uses a cell selector extension
    // It is a _major_ performance drag to run this if it isn't needed, so this is
    // an extension specific check at the moment
    var cells = opts && opts.selected ? this.cells(cellsNoOpts, opts) : cellsNoOpts;

    $.extend(cells.selector, {
      cols: columnSelector,
      rows: rowSelector,
      opts: opts,
    });

    return cells;
  });

  _api_registerPlural("cells().nodes()", "cell().node()", function () {
    return this.iterator(
      "cell",
      function (settings, row, column) {
        var data = settings.aoData[row];

        return data && data.anCells ? data.anCells[column] : undefined;
      },
      1
    );
  });

  _api_register("cells().data()", function () {
    return this.iterator(
      "cell",
      function (settings, row, column) {
        return _fnGetCellData(settings, row, column);
      },
      1
    );
  });

  _api_registerPlural("cells().cache()", "cell().cache()", function (type) {
    type = type === "search" ? "_aFilterData" : "_aSortData";

    return this.iterator(
      "cell",
      function (settings, row, column) {
        return settings.aoData[row][type][column];
      },
      1
    );
  });

  _api_registerPlural("cells().render()", "cell().render()", function (type) {
    return this.iterator(
      "cell",
      function (settings, row, column) {
        return _fnGetCellData(settings, row, column, type);
      },
      1
    );
  });

  _api_registerPlural("cells().indexes()", "cell().index()", function () {
    return this.iterator(
      "cell",
      function (settings, row, column) {
        return {
          row: row,
          column: column,
          columnVisible: _fnColumnIndexToVisible(settings, column),
        };
      },
      1
    );
  });

  _api_registerPlural("cells().invalidate()", "cell().invalidate()", function (src) {
    return this.iterator("cell", function (settings, row, column) {
      _fnInvalidate(settings, row, src, column);
    });
  });

  _api_register("cell()", function (rowSelector, columnSelector, opts) {
    return _selector_first(this.cells(rowSelector, columnSelector, opts));
  });

  _api_register("cell().data()", function (data) {
    var ctx = this.context;
    var cell = this[0];

    if (data === undefined) {
      // Get
      return ctx.length && cell.length ? _fnGetCellData(ctx[0], cell[0].row, cell[0].column) : undefined;
    }

    // Set
    _fnSetCellData(ctx[0], cell[0].row, cell[0].column, data);
    _fnInvalidate(ctx[0], cell[0].row, "data", cell[0].column);

    return this;
  });

  /**
   * Get current ordering (sorting) that has been applied to the table.
   *
   * @returns {array} 2D array containing the sorting information for the first
   *   table in the current context. Each element in the parent array represents
   *   a column being sorted upon (i.e. multi-sorting with two columns would have
   *   2 inner arrays). The inner arrays may have 2 or 3 elements. The first is
   *   the column index that the sorting condition applies to, the second is the
   *   direction of the sort (`desc` or `asc`) and, optionally, the third is the
   *   index of the sorting order from the `column.sorting` initialisation array.
   */ /**
   * Set the ordering for the table.
   *
   * @param {integer} order Column index to sort upon.
   * @param {string} direction Direction of the sort to be applied (`asc` or `desc`)
   * @returns {DataTables.Api} this
   */ /**
   * Set the ordering for the table.
   *
   * @param {array} order 1D array of sorting information to be applied.
   * @param {array} [...] Optional additional sorting conditions
   * @returns {DataTables.Api} this
   */ /**
   * Set the ordering for the table.
   *
   * @param {array} order 2D array of sorting information to be applied.
   * @returns {DataTables.Api} this
   */ _api_register("order()", function (order, dir) {
    var ctx = this.context;
    var args = Array.prototype.slice.call(arguments);

    if (order === undefined) {
      // get
      return ctx.length !== 0 ? ctx[0].aaSorting : undefined;
    }

    // set
    if (typeof order === "number") {
      // Simple column / direction passed in
      order = [[order, dir]];
    } else if (args.length > 1) {
      // Arguments passed in (list of 1D arrays)
      order = args;
    }
    // otherwise a 2D array was passed in

    return this.iterator("table", function (settings) {
      settings.aaSorting = Array.isArray(order) ? order.slice() : order;
    });
  });

  /**
   * Attach a sort listener to an element for a given column
   *
   * @param {node|jQuery|string} node Identifier for the element(s) to attach the
   *   listener to. This can take the form of a single DOM node, a jQuery
   *   collection of nodes or a jQuery selector which will identify the node(s).
   * @param {integer} column the column that a click on this node will sort on
   * @param {function} [callback] callback function when sort is run
   * @returns {DataTables.Api} this
   */
  _api_register("order.listener()", function (node, column, callback) {
    return this.iterator("table", function (settings) {
      _fnSortAttachListener(settings, node, {}, column, callback);
    });
  });

  _api_register("order.fixed()", function (set) {
    if (!set) {
      var ctx = this.context;
      var fixed = ctx.length ? ctx[0].aaSortingFixed : undefined;

      return Array.isArray(fixed) ? { pre: fixed } : fixed;
    }

    return this.iterator("table", function (settings) {
      settings.aaSortingFixed = $.extend(true, {}, set);
    });
  });

  // Order by the selected column(s)
  _api_register(["columns().order()", "column().order()"], function (dir) {
    var that = this;

    if (!dir) {
      return this.iterator(
        "column",
        function (settings, idx) {
          var sort = _fnSortFlatten(settings);

          for (var i = 0, ien = sort.length; i < ien; i++) {
            if (sort[i].col === idx) {
              return sort[i].dir;
            }
          }

          return null;
        },
        1
      );
    } else {
      return this.iterator("table", function (settings, i) {
        settings.aaSorting = that[i].map(function (col) {
          return [col, dir];
        });
      });
    }
  });

  _api_registerPlural("columns().orderable()", "column().orderable()", function (directions) {
    return this.iterator(
      "column",
      function (settings, idx) {
        var col = settings.aoColumns[idx];

        return directions ? col.asSorting : col.bSortable;
      },
      1
    );
  });

  _api_register("processing()", function (show) {
    return this.iterator("table", function (ctx) {
      _fnProcessingDisplay(ctx, show);
    });
  });

  _api_register("search()", function (input, regex, smart, caseInsen) {
    var ctx = this.context;

    if (input === undefined) {
      // get
      return ctx.length !== 0 ? ctx[0].oPreviousSearch.search : undefined;
    }

    // set
    return this.iterator("table", function (settings) {
      if (!settings.oFeatures.bFilter) {
        return;
      }

      if (typeof regex === "object") {
        // New style options to pass to the search builder
        _fnFilterComplete(
          settings,
          $.extend(settings.oPreviousSearch, regex, {
            search: input,
          })
        );
      } else {
        // Compat for the old options
        _fnFilterComplete(
          settings,
          $.extend(settings.oPreviousSearch, {
            search: input,
            regex: regex === null ? false : regex,
            smart: smart === null ? true : smart,
            caseInsensitive: caseInsen === null ? true : caseInsen,
          })
        );
      }
    });
  });

  _api_register("search.fixed()", function (name, search) {
    var ret = this.iterator(true, "table", function (settings) {
      var fixed = settings.searchFixed;

      if (!name) {
        return Object.keys(fixed);
      } else if (search === undefined) {
        return fixed[name];
      } else if (search === null) {
        delete fixed[name];
      } else {
        fixed[name] = search;
      }

      return this;
    });

    return name !== undefined && search === undefined ? ret[0] : ret;
  });

  _api_registerPlural("columns().search()", "column().search()", function (input, regex, smart, caseInsen) {
    return this.iterator("column", function (settings, column) {
      var preSearch = settings.aoPreSearchCols;

      if (input === undefined) {
        // get
        return preSearch[column].search;
      }

      // set
      if (!settings.oFeatures.bFilter) {
        return;
      }

      if (typeof regex === "object") {
        // New style options to pass to the search builder
        $.extend(preSearch[column], regex, {
          search: input,
        });
      } else {
        // Old style (with not all options available)
        $.extend(preSearch[column], {
          search: input,
          regex: regex === null ? false : regex,
          smart: smart === null ? true : smart,
          caseInsensitive: caseInsen === null ? true : caseInsen,
        });
      }

      _fnFilterComplete(settings, settings.oPreviousSearch);
    });
  });

  _api_register(["columns().search.fixed()", "column().search.fixed()"], function (name, search) {
    var ret = this.iterator(true, "column", function (settings, colIdx) {
      var fixed = settings.aoColumns[colIdx].searchFixed;

      if (!name) {
        return Object.keys(fixed);
      } else if (search === undefined) {
        return fixed[name];
      } else if (search === null) {
        delete fixed[name];
      } else {
        fixed[name] = search;
      }

      return this;
    });

    return name !== undefined && search === undefined ? ret[0] : ret;
  });
  /*
   * State API methods
   */

  _api_register("state()", function (set, ignoreTime) {
    // getter
    if (!set) {
      return this.context.length ? this.context[0].oSavedState : null;
    }

    var setMutate = $.extend(true, {}, set);

    // setter
    return this.iterator("table", function (settings) {
      if (ignoreTime !== false) {
        setMutate.time = +new Date() + 100;
      }

      _fnImplementState(settings, setMutate, function () {});
    });
  });

  _api_register("state.clear()", function () {
    return this.iterator("table", function (settings) {
      // Save an empty object
      settings.fnStateSaveCallback.call(settings.oInstance, settings, {});
    });
  });

  _api_register("state.loaded()", function () {
    return this.context.length ? this.context[0].oLoadedState : null;
  });

  _api_register("state.save()", function () {
    return this.iterator("table", function (settings) {
      _fnSaveState(settings);
    });
  });

  /**
   * Set the jQuery or window object to be used by DataTables
   *
   * @param {*} module Library / container object
   * @param {string} [type] Library or container type `lib`, `win` or `datetime`.
   *   If not provided, automatic detection is attempted.
   */
  DataTable.use = function (module, type) {
    if (type === "lib" || module.fn) {
      $ = module;
    } else if (type == "win" || module.document) {
      window = module;
      document = module.document;
    } else if (type === "datetime" || module.type === "DateTime") {
      DataTable.DateTime = module;
    }
  };

  /**
   * CommonJS factory function pass through. This will check if the arguments
   * given are a window object or a jQuery object. If so they are set
   * accordingly.
   * @param {*} root Window
   * @param {*} jq jQUery
   * @returns {boolean} Indicator
   */
  DataTable.factory = function (root, jq) {
    var is = false;

    // Test if the first parameter is a window object
    if (root && root.document) {
      window = root;
      document = root.document;
    }

    // Test if the second parameter is a jQuery object
    if (jq && jq.fn && jq.fn.jquery) {
      $ = jq;
      is = true;
    }

    return is;
  };

  /**
   * Provide a common method for plug-ins to check the version of DataTables being
   * used, in order to ensure compatibility.
   *
   *  @param {string} version Version string to check for, in the format "X.Y.Z".
   *    Note that the formats "X" and "X.Y" are also acceptable.
   *  @param {string} [version2=current DataTables version] As above, but optional.
   *   If not given the current DataTables version will be used.
   *  @returns {boolean} true if this version of DataTables is greater or equal to
   *    the required version, or false if this version of DataTales is not
   *    suitable
   *  @static
   *  @dtopt API-Static
   *
   *  @example
   *    alert( $.fn.dataTable.versionCheck( '1.9.0' ) );
   */
  DataTable.versionCheck = function (version, version2) {
    var aThis = version2 ? version2.split(".") : DataTable.version.split(".");
    var aThat = version.split(".");
    var iThis, iThat;

    for (var i = 0, iLen = aThat.length; i < iLen; i++) {
      iThis = parseInt(aThis[i], 10) || 0;
      iThat = parseInt(aThat[i], 10) || 0;

      // Parts are the same, keep comparing
      if (iThis === iThat) {
        continue;
      }

      // Parts are different, return immediately
      return iThis > iThat;
    }

    return true;
  };

  /**
   * Check if a `<table>` node is a DataTable table already or not.
   *
   *  @param {node|jquery|string} table Table node, jQuery object or jQuery
   *      selector for the table to test. Note that if more than more than one
   *      table is passed on, only the first will be checked
   *  @returns {boolean} true the table given is a DataTable, or false otherwise
   *  @static
   *  @dtopt API-Static
   *
   *  @example
   *    if ( ! $.fn.DataTable.isDataTable( '#example' ) ) {
   *      $('#example').dataTable();
   *    }
   */
  DataTable.isDataTable = function (table) {
    var t = $(table).get(0);
    var is = false;

    if (table instanceof DataTable.Api) {
      return true;
    }

    $.each(DataTable.settings, function (i, o) {
      var head = o.nScrollHead ? $("table", o.nScrollHead)[0] : null;
      var foot = o.nScrollFoot ? $("table", o.nScrollFoot)[0] : null;

      if (o.nTable === t || head === t || foot === t) {
        is = true;
      }
    });

    return is;
  };

  /**
   * Get all DataTable tables that have been initialised - optionally you can
   * select to get only currently visible tables.
   *
   *  @param {boolean} [visible=false] Flag to indicate if you want all (default)
   *    or visible tables only.
   *  @returns {array} Array of `table` nodes (not DataTable instances) which are
   *    DataTables
   *  @static
   *  @dtopt API-Static
   *
   *  @example
   *    $.each( $.fn.dataTable.tables(true), function () {
   *      $(table).DataTable().columns.adjust();
   *    } );
   */
  DataTable.tables = function (visible) {
    var api = false;

    if ($.isPlainObject(visible)) {
      api = visible.api;
      visible = visible.visible;
    }

    var a = DataTable.settings
      .filter(function (o) {
        return !visible || (visible && $(o.nTable).is(":visible")) ? true : false;
      })
      .map(function (o) {
        return o.nTable;
      });

    return api ? new _Api(a) : a;
  };

  /**
   * Convert from camel case parameters to Hungarian notation. This is made public
   * for the extensions to provide the same ability as DataTables core to accept
   * either the 1.9 style Hungarian notation, or the 1.10+ style camelCase
   * parameters.
   *
   *  @param {object} src The model object which holds all parameters that can be
   *    mapped.
   *  @param {object} user The object to convert from camel case to Hungarian.
   *  @param {boolean} force When set to `true`, properties which already have a
   *    Hungarian value in the `user` object will be overwritten. Otherwise they
   *    won't be.
   */
  DataTable.camelToHungarian = _fnCamelToHungarian;

  /**
   *
   */
  _api_register("$()", function (selector, opts) {
    var rows = this.rows(opts).nodes(), // Get all rows
      jqRows = $(rows);

    return $([].concat(jqRows.filter(selector).toArray(), jqRows.find(selector).toArray()));
  });

  // jQuery functions to operate on the tables
  $.each(["on", "one", "off"], function (i, key) {
    _api_register(key + "()", function (/* event, handler */) {
      var args = Array.prototype.slice.call(arguments);

      // Add the `dt` namespace automatically if it isn't already present
      args[0] = args[0]
        .split(/\s/)
        .map(function (e) {
          return !e.match(/\.dt\b/) ? e + ".dt" : e;
        })
        .join(" ");

      var inst = $(this.tables().nodes());
      inst[key].apply(inst, args);
      return this;
    });
  });

  _api_register("clear()", function () {
    return this.iterator("table", function (settings) {
      _fnClearTable(settings);
    });
  });

  _api_register("error()", function (msg) {
    return this.iterator("table", function (settings) {
      _fnLog(settings, 0, msg);
    });
  });

  _api_register("settings()", function () {
    return new _Api(this.context, this.context);
  });

  _api_register("init()", function () {
    var ctx = this.context;
    return ctx.length ? ctx[0].oInit : null;
  });

  _api_register("data()", function () {
    return this.iterator("table", function (settings) {
      return _pluck(settings.aoData, "_aData");
    }).flatten();
  });

  _api_register("trigger()", function (name, args, bubbles) {
    return this.iterator("table", function (settings) {
      return _fnCallbackFire(settings, null, name, args, bubbles);
    }).flatten();
  });

  _api_register("ready()", function (fn) {
    var ctx = this.context;

    // Get status of first table
    if (!fn) {
      return ctx.length ? ctx[0]._bInitComplete || false : null;
    }

    // Function to run either once the table becomes ready or
    // immediately if it is already ready.
    return this.tables().every(function () {
      if (this.context[0]._bInitComplete) {
        fn.call(this);
      } else {
        this.on("init", function () {
          fn.call(this);
        });
      }
    });
  });

  _api_register("destroy()", function (remove) {
    remove = remove || false;

    return this.iterator("table", function (settings) {
      var classes = settings.oClasses;
      var table = settings.nTable;
      var tbody = settings.nTBody;
      var thead = settings.nTHead;
      var tfoot = settings.nTFoot;
      var jqTable = $(table);
      var jqTbody = $(tbody);
      var jqWrapper = $(settings.nTableWrapper);
      var rows = settings.aoData.map(function (r) {
        return r ? r.nTr : null;
      });
      var orderClasses = classes.order;

      // Flag to note that the table is currently being destroyed - no action
      // should be taken
      settings.bDestroying = true;

      // Fire off the destroy callbacks for plug-ins etc
      _fnCallbackFire(settings, "aoDestroyCallback", "destroy", [settings], true);

      // If not being removed from the document, make all columns visible
      if (!remove) {
        new _Api(settings).columns().visible(true);
      }

      // Blitz all `DT` namespaced events (these are internal events, the
      // lowercase, `dt` events are user subscribed and they are responsible
      // for removing them
      jqWrapper.off(".DT").find(":not(tbody *)").off(".DT");
      $(window).off(".DT-" + settings.sInstance);

      // When scrolling we had to break the table up - restore it
      if (table != thead.parentNode) {
        jqTable.children("thead").detach();
        jqTable.append(thead);
      }

      if (tfoot && table != tfoot.parentNode) {
        jqTable.children("tfoot").detach();
        jqTable.append(tfoot);
      }

      settings.colgroup.remove();

      settings.aaSorting = [];
      settings.aaSortingFixed = [];
      _fnSortingClasses(settings);

      $("th, td", thead)
        .removeClass(orderClasses.canAsc + " " + orderClasses.canDesc + " " + orderClasses.isAsc + " " + orderClasses.isDesc)
        .css("width", "");

      // Add the TR elements back into the table in their original order
      jqTbody.children().detach();
      jqTbody.append(rows);

      var orig = settings.nTableWrapper.parentNode;
      var insertBefore = settings.nTableWrapper.nextSibling;

      // Remove the DataTables generated nodes, events and classes
      var removedMethod = remove ? "remove" : "detach";
      jqTable[removedMethod]();
      jqWrapper[removedMethod]();

      // If we need to reattach the table to the document
      if (!remove && orig) {
        // insertBefore acts like appendChild if !arg[1]
        orig.insertBefore(table, insertBefore);

        // Restore the width of the original table - was read from the style property,
        // so we can restore directly to that
        jqTable.css("width", settings.sDestroyWidth).removeClass(classes.table);
      }

      /* Remove the settings object from the settings array */
      var idx = DataTable.settings.indexOf(settings);
      if (idx !== -1) {
        DataTable.settings.splice(idx, 1);
      }
    });
  });

  // Add the `every()` method for rows, columns and cells in a compact form
  $.each(["column", "row", "cell"], function (i, type) {
    _api_register(type + "s().every()", function (fn) {
      var opts = this.selector.opts;
      var api = this;
      var inst;
      var counter = 0;

      return this.iterator("every", function (settings, selectedIdx, tableIdx) {
        inst = api[type](selectedIdx, opts);

        if (type === "cell") {
          fn.call(inst, inst[0][0].row, inst[0][0].column, tableIdx, counter);
        } else {
          fn.call(inst, selectedIdx, tableIdx, counter);
        }

        counter++;
      });
    });
  });

  // i18n method for extensions to be able to use the language object from the
  // DataTable
  _api_register("i18n()", function (token, def, plural) {
    var ctx = this.context[0];
    var resolved = _fnGetObjectDataFn(token)(ctx.oLanguage);

    if (resolved === undefined) {
      resolved = def;
    }

    if ($.isPlainObject(resolved)) {
      resolved = plural !== undefined && resolved[plural] !== undefined ? resolved[plural] : resolved._;
    }

    return typeof resolved === "string"
      ? resolved.replace("%d", plural) // nb: plural might be undefined,
      : resolved;
  });

  /**
   * Version string for plug-ins to check compatibility. Allowed format is
   * `a.b.c-d` where: a:int, b:int, c:int, d:string(dev|beta|alpha). `d` is used
   * only for non-release builds. See https://semver.org/ for more information.
   *  @member
   *  @type string
   *  @default Version number
   */
  DataTable.version = "2.0.1";

  /**
   * Private data store, containing all of the settings objects that are
   * created for the tables on a given page.
   *
   * Note that the `DataTable.settings` object is aliased to
   * `jQuery.fn.dataTableExt` through which it may be accessed and
   * manipulated, or `jQuery.fn.dataTable.settings`.
   *  @member
   *  @type array
   *  @default []
   *  @private
   */
  DataTable.settings = [];

  /**
   * Object models container, for the various models that DataTables has
   * available to it. These models define the objects that are used to hold
   * the active state and configuration of the table.
   *  @namespace
   */
  DataTable.models = {};

  /**
   * Template object for the way in which DataTables holds information about
   * search information for the global filter and individual column filters.
   *  @namespace
   */
  DataTable.models.oSearch = {
    /**
     * Flag to indicate if the filtering should be case insensitive or not
     */
    caseInsensitive: true,

    /**
     * Applied search term
     */
    search: "",

    /**
     * Flag to indicate if the search term should be interpreted as a
     * regular expression (true) or not (false) and therefore and special
     * regex characters escaped.
     */
    regex: false,

    /**
     * Flag to indicate if DataTables is to use its smart filtering or not.
     */
    smart: true,

    /**
     * Flag to indicate if DataTables should only trigger a search when
     * the return key is pressed.
     */
    return: false,
  };

  /**
   * Template object for the way in which DataTables holds information about
   * each individual row. This is the object format used for the settings
   * aoData array.
   *  @namespace
   */
  DataTable.models.oRow = {
    /**
     * TR element for the row
     */
    nTr: null,

    /**
     * Array of TD elements for each row. This is null until the row has been
     * created.
     */
    anCells: null,

    /**
     * Data object from the original data source for the row. This is either
     * an array if using the traditional form of DataTables, or an object if
     * using mData options. The exact type will depend on the passed in
     * data from the data source, or will be an array if using DOM a data
     * source.
     */
    _aData: [],

    /**
     * Sorting data cache - this array is ostensibly the same length as the
     * number of columns (although each index is generated only as it is
     * needed), and holds the data that is used for sorting each column in the
     * row. We do this cache generation at the start of the sort in order that
     * the formatting of the sort data need be done only once for each cell
     * per sort. This array should not be read from or written to by anything
     * other than the master sorting methods.
     */
    _aSortData: null,

    /**
     * Per cell filtering data cache. As per the sort data cache, used to
     * increase the performance of the filtering in DataTables
     */
    _aFilterData: null,

    /**
     * Filtering data cache. This is the same as the cell filtering cache, but
     * in this case a string rather than an array. This is easily computed with
     * a join on `_aFilterData`, but is provided as a cache so the join isn't
     * needed on every search (memory traded for performance)
     */
    _sFilterRow: null,

    /**
     * Denote if the original data source was from the DOM, or the data source
     * object. This is used for invalidating data, so DataTables can
     * automatically read data from the original source, unless uninstructed
     * otherwise.
     */
    src: null,

    /**
     * Index in the aoData array. This saves an indexOf lookup when we have the
     * object, but want to know the index
     */
    idx: -1,

    /**
     * Cached display value
     */
    displayData: null,
  };

  /**
   * Template object for the column information object in DataTables. This object
   * is held in the settings aoColumns array and contains all the information that
   * DataTables needs about each individual column.
   *
   * Note that this object is related to {@link DataTable.defaults.column}
   * but this one is the internal data store for DataTables's cache of columns.
   * It should NOT be manipulated outside of DataTables. Any configuration should
   * be done through the initialisation options.
   *  @namespace
   */
  DataTable.models.oColumn = {
    /**
     * Column index.
     */
    idx: null,

    /**
     * A list of the columns that sorting should occur on when this column
     * is sorted. That this property is an array allows multi-column sorting
     * to be defined for a column (for example first name / last name columns
     * would benefit from this). The values are integers pointing to the
     * columns to be sorted on (typically it will be a single integer pointing
     * at itself, but that doesn't need to be the case).
     */
    aDataSort: null,

    /**
     * Define the sorting directions that are applied to the column, in sequence
     * as the column is repeatedly sorted upon - i.e. the first value is used
     * as the sorting direction when the column if first sorted (clicked on).
     * Sort it again (click again) and it will move on to the next index.
     * Repeat until loop.
     */
    asSorting: null,

    /**
     * Flag to indicate if the column is searchable, and thus should be included
     * in the filtering or not.
     */
    bSearchable: null,

    /**
     * Flag to indicate if the column is sortable or not.
     */
    bSortable: null,

    /**
     * Flag to indicate if the column is currently visible in the table or not
     */
    bVisible: null,

    /**
     * Store for manual type assignment using the `column.type` option. This
     * is held in store so we can manipulate the column's `sType` property.
     */
    _sManualType: null,

    /**
     * Flag to indicate if HTML5 data attributes should be used as the data
     * source for filtering or sorting. True is either are.
     */
    _bAttrSrc: false,

    /**
     * Developer definable function that is called whenever a cell is created (Ajax source,
     * etc) or processed for input (DOM source). This can be used as a compliment to mRender
     * allowing you to modify the DOM element (add background colour for example) when the
     * element is available.
     */
    fnCreatedCell: null,

    /**
     * Function to get data from a cell in a column. You should <b>never</b>
     * access data directly through _aData internally in DataTables - always use
     * the method attached to this property. It allows mData to function as
     * required. This function is automatically assigned by the column
     * initialisation method
     */
    fnGetData: null,

    /**
     * Function to set data for a cell in the column. You should <b>never</b>
     * set the data directly to _aData internally in DataTables - always use
     * this method. It allows mData to function as required. This function
     * is automatically assigned by the column initialisation method
     */
    fnSetData: null,

    /**
     * Property to read the value for the cells in the column from the data
     * source array / object. If null, then the default content is used, if a
     * function is given then the return from the function is used.
     */
    mData: null,

    /**
     * Partner property to mData which is used (only when defined) to get
     * the data - i.e. it is basically the same as mData, but without the
     * 'set' option, and also the data fed to it is the result from mData.
     * This is the rendering method to match the data method of mData.
     */
    mRender: null,

    /**
     * The class to apply to all TD elements in the table's TBODY for the column
     */
    sClass: null,

    /**
     * When DataTables calculates the column widths to assign to each column,
     * it finds the longest string in each column and then constructs a
     * temporary table and reads the widths from that. The problem with this
     * is that "mmm" is much wider then "iiii", but the latter is a longer
     * string - thus the calculation can go wrong (doing it properly and putting
     * it into an DOM object and measuring that is horribly(!) slow). Thus as
     * a "work around" we provide this option. It will append its value to the
     * text that is found to be the longest string for the column - i.e. padding.
     */
    sContentPadding: null,

    /**
     * Allows a default value to be given for a column's data, and will be used
     * whenever a null data source is encountered (this can be because mData
     * is set to null, or because the data source itself is null).
     */
    sDefaultContent: null,

    /**
     * Name for the column, allowing reference to the column by name as well as
     * by index (needs a lookup to work by name).
     */
    sName: null,

    /**
     * Custom sorting data type - defines which of the available plug-ins in
     * afnSortData the custom sorting will use - if any is defined.
     */
    sSortDataType: "std",

    /**
     * Class to be applied to the header element when sorting on this column
     */
    sSortingClass: null,

    /**
     * Title of the column - what is seen in the TH element (nTh).
     */
    sTitle: null,

    /**
     * Column sorting and filtering type
     */
    sType: null,

    /**
     * Width of the column
     */
    sWidth: null,

    /**
     * Width of the column when it was first "encountered"
     */
    sWidthOrig: null,

    /** Cached string which is the longest in the column */
    maxLenString: null,

    /**
     * Store for named searches
     */
    searchFixed: null,
  };

  /*
   * Developer note: The properties of the object below are given in Hungarian
   * notation, that was used as the interface for DataTables prior to v1.10, however
   * from v1.10 onwards the primary interface is camel case. In order to avoid
   * breaking backwards compatibility utterly with this change, the Hungarian
   * version is still, internally the primary interface, but is is not documented
   * - hence the @name tags in each doc comment. This allows a Javascript function
   * to create a map from Hungarian notation to camel case (going the other direction
   * would require each property to be listed, which would add around 3K to the size
   * of DataTables, while this method is about a 0.5K hit).
   *
   * Ultimately this does pave the way for Hungarian notation to be dropped
   * completely, but that is a massive amount of work and will break current
   * installs (therefore is on-hold until v2).
   */

  /**
   * Initialisation options that can be given to DataTables at initialisation
   * time.
   *  @namespace
   */
  DataTable.defaults = {
    /**
     * An array of data to use for the table, passed in at initialisation which
     * will be used in preference to any data which is already in the DOM. This is
     * particularly useful for constructing tables purely in Javascript, for
     * example with a custom Ajax call.
     */
    aaData: null,

    /**
     * If ordering is enabled, then DataTables will perform a first pass sort on
     * initialisation. You can define which column(s) the sort is performed
     * upon, and the sorting direction, with this variable. The `sorting` array
     * should contain an array for each column to be sorted initially containing
     * the column's index and a direction string ('asc' or 'desc').
     */
    aaSorting: [[0, "asc"]],

    /**
     * This parameter is basically identical to the `sorting` parameter, but
     * cannot be overridden by user interaction with the table. What this means
     * is that you could have a column (visible or hidden) which the sorting
     * will always be forced on first - any sorting after that (from the user)
     * will then be performed as required. This can be useful for grouping rows
     * together.
     */
    aaSortingFixed: [],

    /**
     * DataTables can be instructed to load data to display in the table from a
     * Ajax source. This option defines how that Ajax call is made and where to.
     *
     * The `ajax` property has three different modes of operation, depending on
     * how it is defined. These are:
     *
     * * `string` - Set the URL from where the data should be loaded from.
     * * `object` - Define properties for `jQuery.ajax`.
     * * `function` - Custom data get function
     *
     * `string`
     * --------
     *
     * As a string, the `ajax` property simply defines the URL from which
     * DataTables will load data.
     *
     * `object`
     * --------
     *
     * As an object, the parameters in the object are passed to
     * [jQuery.ajax](https://api.jquery.com/jQuery.ajax/) allowing fine control
     * of the Ajax request. DataTables has a number of default parameters which
     * you can override using this option. Please refer to the jQuery
     * documentation for a full description of the options available, although
     * the following parameters provide additional options in DataTables or
     * require special consideration:
     *
     * * `data` - As with jQuery, `data` can be provided as an object, but it
     *   can also be used as a function to manipulate the data DataTables sends
     *   to the server. The function takes a single parameter, an object of
     *   parameters with the values that DataTables has readied for sending. An
     *   object may be returned which will be merged into the DataTables
     *   defaults, or you can add the items to the object that was passed in and
     *   not return anything from the function. This supersedes `fnServerParams`
     *   from DataTables 1.9-.
     *
     * * `dataSrc` - By default DataTables will look for the property `data` (or
     *   `aaData` for compatibility with DataTables 1.9-) when obtaining data
     *   from an Ajax source or for server-side processing - this parameter
     *   allows that property to be changed. You can use Javascript dotted
     *   object notation to get a data source for multiple levels of nesting, or
     *   it my be used as a function. As a function it takes a single parameter,
     *   the JSON returned from the server, which can be manipulated as
     *   required, with the returned value being that used by DataTables as the
     *   data source for the table.
     *
     * * `success` - Should not be overridden it is used internally in
     *   DataTables. To manipulate / transform the data returned by the server
     *   use `ajax.dataSrc`, or use `ajax` as a function (see below).
     *
     * `function`
     * ----------
     *
     * As a function, making the Ajax call is left up to yourself allowing
     * complete control of the Ajax request. Indeed, if desired, a method other
     * than Ajax could be used to obtain the required data, such as Web storage
     * or an AIR database.
     *
     * The function is given four parameters and no return is required. The
     * parameters are:
     *
     * 1. _object_ - Data to send to the server
     * 2. _function_ - Callback function that must be executed when the required
     *    data has been obtained. That data should be passed into the callback
     *    as the only parameter
     * 3. _object_ - DataTables settings object for the table
     */
    ajax: null,

    /**
     * This parameter allows you to readily specify the entries in the length drop
     * down menu that DataTables shows when pagination is enabled. It can be
     * either a 1D array of options which will be used for both the displayed
     * option and the value, or a 2D array which will use the array in the first
     * position as the value, and the array in the second position as the
     * displayed options (useful for language strings such as 'All').
     *
     * Note that the `pageLength` property will be automatically set to the
     * first value given in this array, unless `pageLength` is also provided.
     */
    aLengthMenu: [10, 25, 50, 100],

    /**
     * The `columns` option in the initialisation parameter allows you to define
     * details about the way individual columns behave. For a full list of
     * column options that can be set, please see
     * {@link DataTable.defaults.column}. Note that if you use `columns` to
     * define your columns, you must have an entry in the array for every single
     * column that you have in your table (these can be null if you don't which
     * to specify any options).
     */
    aoColumns: null,

    /**
     * Very similar to `columns`, `columnDefs` allows you to target a specific
     * column, multiple columns, or all columns, using the `targets` property of
     * each object in the array. This allows great flexibility when creating
     * tables, as the `columnDefs` arrays can be of any length, targeting the
     * columns you specifically want. `columnDefs` may use any of the column
     * options available: {@link DataTable.defaults.column}, but it _must_
     * have `targets` defined in each object in the array. Values in the `targets`
     * array may be:
     *   <ul>
     *     <li>a string - class name will be matched on the TH for the column</li>
     *     <li>0 or a positive integer - column index counting from the left</li>
     *     <li>a negative integer - column index counting from the right</li>
     *     <li>the string "_all" - all columns (i.e. assign a default)</li>
     *   </ul>
     */
    aoColumnDefs: null,

    /**
     * Basically the same as `search`, this parameter defines the individual column
     * filtering state at initialisation time. The array must be of the same size
     * as the number of columns, and each element be an object with the parameters
     * `search` and `escapeRegex` (the latter is optional). 'null' is also
     * accepted and the default will be used.
     */
    aoSearchCols: [],

    /**
     * Enable or disable automatic column width calculation. This can be disabled
     * as an optimisation (it takes some time to calculate the widths) if the
     * tables widths are passed in using `columns`.
     */
    bAutoWidth: true,

    /**
     * Deferred rendering can provide DataTables with a huge speed boost when you
     * are using an Ajax or JS data source for the table. This option, when set to
     * true, will cause DataTables to defer the creation of the table elements for
     * each row until they are needed for a draw - saving a significant amount of
     * time.
     */
    bDeferRender: true,

    /**
     * Replace a DataTable which matches the given selector and replace it with
     * one which has the properties of the new initialisation object passed. If no
     * table matches the selector, then the new DataTable will be constructed as
     * per normal.
     */
    bDestroy: false,

    /**
     * Enable or disable filtering of data. Filtering in DataTables is "smart" in
     * that it allows the end user to input multiple words (space separated) and
     * will match a row containing those words, even if not in the order that was
     * specified (this allow matching across multiple columns). Note that if you
     * wish to use filtering in DataTables this must remain 'true' - to remove the
     * default filtering input box and retain filtering abilities, please use
     * {@link DataTable.defaults.dom}.
     */
    bFilter: true,

    /**
     * Used only for compatiblity with DT1
     * @deprecated
     */
    bInfo: true,

    /**
     * Used only for compatiblity with DT1
     * @deprecated
     */
    bLengthChange: true,

    /**
     * Enable or disable pagination.
     */
    bPaginate: true,

    /**
     * Enable or disable the display of a 'processing' indicator when the table is
     * being processed (e.g. a sort). This is particularly useful for tables with
     * large amounts of data where it can take a noticeable amount of time to sort
     * the entries.
     */
    bProcessing: false,

    /**
     * Retrieve the DataTables object for the given selector. Note that if the
     * table has already been initialised, this parameter will cause DataTables
     * to simply return the object that has already been set up - it will not take
     * account of any changes you might have made to the initialisation object
     * passed to DataTables (setting this parameter to true is an acknowledgement
     * that you understand this). `destroy` can be used to reinitialise a table if
     * you need.
     */
    bRetrieve: false,

    /**
     * When vertical (y) scrolling is enabled, DataTables will force the height of
     * the table's viewport to the given height at all times (useful for layout).
     * However, this can look odd when filtering data down to a small data set,
     * and the footer is left "floating" further down. This parameter (when
     * enabled) will cause DataTables to collapse the table's viewport down when
     * the result set will fit within the given Y height.
     */
    bScrollCollapse: false,

    /**
     * Configure DataTables to use server-side processing. Note that the
     * `ajax` parameter must also be given in order to give DataTables a
     * source to obtain the required data for each draw.
     */
    bServerSide: false,

    /**
     * Enable or disable sorting of columns. Sorting of individual columns can be
     * disabled by the `sortable` option for each column.
     */
    bSort: true,

    /**
     * Enable or display DataTables' ability to sort multiple columns at the
     * same time (activated by shift-click by the user).
     */
    bSortMulti: true,

    /**
     * Allows control over whether DataTables should use the top (true) unique
     * cell that is found for a single column, or the bottom (false - default).
     * This is useful when using complex headers.
     */
    bSortCellsTop: null,

    /**
     * Enable or disable the addition of the classes `sorting\_1`, `sorting\_2` and
     * `sorting\_3` to the columns which are currently being sorted on. This is
     * presented as a feature switch as it can increase processing time (while
     * classes are removed and added) so for large data sets you might want to
     * turn this off.
     */
    bSortClasses: true,

    /**
     * Enable or disable state saving. When enabled HTML5 `localStorage` will be
     * used to save table display information such as pagination information,
     * display length, filtering and sorting. As such when the end user reloads
     * the page the display display will match what thy had previously set up.
     */
    bStateSave: false,

    /**
     * This function is called when a TR element is created (and all TD child
     * elements have been inserted), or registered if using a DOM source, allowing
     * manipulation of the TR element (adding classes etc).
     */
    fnCreatedRow: null,

    /**
     * This function is called on every 'draw' event, and allows you to
     * dynamically modify any aspect you want about the created DOM.
     */
    fnDrawCallback: null,

    /**
     * Identical to fnHeaderCallback() but for the table footer this function
     * allows you to modify the table footer on every 'draw' event.
     */
    fnFooterCallback: null,

    /**
     * When rendering large numbers in the information element for the table
     * (i.e. "Showing 1 to 10 of 57 entries") DataTables will render large numbers
     * to have a comma separator for the 'thousands' units (e.g. 1 million is
     * rendered as "1,000,000") to help readability for the end user. This
     * function will override the default method DataTables uses.
     */
    fnFormatNumber: function (toFormat) {
      return toFormat.toString().replace(/\B(?=(\d{3})+(?!\d))/g, this.oLanguage.sThousands);
    },

    /**
     * This function is called on every 'draw' event, and allows you to
     * dynamically modify the header row. This can be used to calculate and
     * display useful information about the table.
     */
    fnHeaderCallback: null,

    /**
     * The information element can be used to convey information about the current
     * state of the table. Although the internationalisation options presented by
     * DataTables are quite capable of dealing with most customisations, there may
     * be times where you wish to customise the string further. This callback
     * allows you to do exactly that.
     */
    fnInfoCallback: null,

    /**
     * Called when the table has been initialised. Normally DataTables will
     * initialise sequentially and there will be no need for this function,
     * however, this does not hold true when using external language information
     * since that is obtained using an async XHR call.
     */
    fnInitComplete: null,

    /**
     * Called at the very start of each table draw and can be used to cancel the
     * draw by returning false, any other return (including undefined) results in
     * the full draw occurring).
     */
    fnPreDrawCallback: null,

    /**
     * This function allows you to 'post process' each row after it have been
     * generated for each table draw, but before it is rendered on screen. This
     * function might be used for setting the row class name etc.
     */
    fnRowCallback: null,

    /**
     * Load the table state. With this function you can define from where, and how, the
     * state of a table is loaded. By default DataTables will load from `localStorage`
     * but you might wish to use a server-side database or cookies.
     */
    fnStateLoadCallback: function (settings) {
      try {
        return JSON.parse((settings.iStateDuration === -1 ? sessionStorage : localStorage).getItem("DataTables_" + settings.sInstance + "_" + location.pathname));
      } catch (e) {
        return {};
      }
    },

    /**
     * Callback which allows modification of the saved state prior to loading that state.
     * This callback is called when the table is loading state from the stored data, but
     * prior to the settings object being modified by the saved state. Note that for
     * plug-in authors, you should use the `stateLoadParams` event to load parameters for
     * a plug-in.
     */
    fnStateLoadParams: null,

    /**
     * Callback that is called when the state has been loaded from the state saving method
     * and the DataTables settings object has been modified as a result of the loaded state.
     */
    fnStateLoaded: null,

    /**
     * Save the table state. This function allows you to define where and how the state
     * information for the table is stored By default DataTables will use `localStorage`
     * but you might wish to use a server-side database or cookies.
     */
    fnStateSaveCallback: function (settings, data) {
      try {
        (settings.iStateDuration === -1 ? sessionStorage : localStorage).setItem("DataTables_" + settings.sInstance + "_" + location.pathname, JSON.stringify(data));
      } catch (e) {
        // noop
      }
    },

    /**
     * Callback which allows modification of the state to be saved. Called when the table
     * has changed state a new state save is required. This method allows modification of
     * the state saving object prior to actually doing the save, including addition or
     * other state properties or modification. Note that for plug-in authors, you should
     * use the `stateSaveParams` event to save parameters for a plug-in.
     */
    fnStateSaveParams: null,

    /**
     * Duration for which the saved state information is considered valid. After this period
     * has elapsed the state will be returned to the default.
     * Value is given in seconds.
     */
    iStateDuration: 7200,

    /**
     * Number of rows to display on a single page when using pagination. If
     * feature enabled (`lengthChange`) then the end user will be able to override
     * this to a custom setting using a pop-up menu.
     */
    iDisplayLength: 10,

    /**
     * Define the starting point for data display when using DataTables with
     * pagination. Note that this parameter is the number of records, rather than
     * the page number, so if you have 10 records per page and want to start on
     * the third page, it should be "20".
     */
    iDisplayStart: 0,

    /**
     * By default DataTables allows keyboard navigation of the table (sorting, paging,
     * and filtering) by adding a `tabindex` attribute to the required elements. This
     * allows you to tab through the controls and press the enter key to activate them.
     * The tabindex is default 0, meaning that the tab follows the flow of the document.
     * You can overrule this using this parameter if you wish. Use a value of -1 to
     * disable built-in keyboard navigation.
     */
    iTabIndex: 0,

    /**
     * Classes that DataTables assigns to the various components and features
     * that it adds to the HTML table. This allows classes to be configured
     * during initialisation in addition to through the static
     * {@link DataTable.ext.oStdClasses} object).
     */
    oClasses: {},

    /**
     * All strings that DataTables uses in the user interface that it creates
     * are defined in this object, allowing you to modified them individually or
     * completely replace them all as required.
     */
    oLanguage: {
      /**
       * Strings that are used for WAI-ARIA labels and controls only (these are not
       * actually visible on the page, but will be read by screenreaders, and thus
       * must be internationalised as well).
       */
      oAria: {
        /**
         * ARIA label that is added to the table headers when the column may be sorted
         */
        orderable: ": Activate to sort",

        /**
         * ARIA label that is added to the table headers when the column is currently being sorted
         */
        orderableReverse: ": Activate to invert sorting",

        /**
         * ARIA label that is added to the table headers when the column is currently being
         * sorted and next step is to remove sorting
         */
        orderableRemove: ": Activate to remove sorting",

        paginate: {
          first: "First",
          last: "Last",
          next: "Next",
          previous: "Previous",
        },
      },

      /**
       * Pagination string used by DataTables for the built-in pagination
       * control types.
       */
      oPaginate: {
        /**
         * Label and character for first page button
         */
        sFirst: "«",

        /**
         * Last page button
         */
        sLast: "»",

        /**
         * Next page button
         */
        sNext: "›",

        /**
         * Previous page button
         */
        sPrevious: "‹",
      },

      /**
       * Plural object for the data type the table is showing
       */
      entries: {
        _: "entries",
        1: "entry",
      },

      /**
       * This string is shown in preference to `zeroRecords` when the table is
       * empty of data (regardless of filtering). Note that this is an optional
       * parameter - if it is not given, the value of `zeroRecords` will be used
       * instead (either the default or given value).
       */
      sEmptyTable: "No data available in table",

      /**
       * This string gives information to the end user about the information
       * that is current on display on the page. The following tokens can be
       * used in the string and will be dynamically replaced as the table
       * display updates. This tokens can be placed anywhere in the string, or
       * removed as needed by the language requires:
       *
       * * `\_START\_` - Display index of the first record on the current page
       * * `\_END\_` - Display index of the last record on the current page
       * * `\_TOTAL\_` - Number of records in the table after filtering
       * * `\_MAX\_` - Number of records in the table without filtering
       * * `\_PAGE\_` - Current page number
       * * `\_PAGES\_` - Total number of pages of data in the table
       */
      sInfo: "Showing _START_ to _END_ of _TOTAL_ _ENTRIES-TOTAL_",

      /**
       * Display information string for when the table is empty. Typically the
       * format of this string should match `info`.
       */
      sInfoEmpty: "Showing 0 to 0 of 0 _ENTRIES-TOTAL_",

      /**
       * When a user filters the information in a table, this string is appended
       * to the information (`info`) to give an idea of how strong the filtering
       * is. The variable _MAX_ is dynamically updated.
       */
      sInfoFiltered: "(filtered from _MAX_ total _ENTRIES-MAX_)",

      /**
       * If can be useful to append extra information to the info string at times,
       * and this variable does exactly that. This information will be appended to
       * the `info` (`infoEmpty` and `infoFiltered` in whatever combination they are
       * being used) at all times.
       */
      sInfoPostFix: "",

      /**
       * This decimal place operator is a little different from the other
       * language options since DataTables doesn't output floating point
       * numbers, so it won't ever use this for display of a number. Rather,
       * what this parameter does is modify the sort methods of the table so
       * that numbers which are in a format which has a character other than
       * a period (`.`) as a decimal place will be sorted numerically.
       *
       * Note that numbers with different decimal places cannot be shown in
       * the same table and still be sortable, the table must be consistent.
       * However, multiple different tables on the page can use different
       * decimal place characters.
       */
      sDecimal: "",

      /**
       * DataTables has a build in number formatter (`formatNumber`) which is
       * used to format large numbers that are used in the table information.
       * By default a comma is used, but this can be trivially changed to any
       * character you wish with this parameter.
       */
      sThousands: ",",

      /**
       * Detail the action that will be taken when the drop down menu for the
       * pagination length option is changed. The '_MENU_' variable is replaced
       * with a default select list of 10, 25, 50 and 100, and can be replaced
       * with a custom select box if required.
       */
      sLengthMenu: "_MENU_ _ENTRIES_ per page",

      /**
       * When using Ajax sourced data and during the first draw when DataTables is
       * gathering the data, this message is shown in an empty row in the table to
       * indicate to the end user the the data is being loaded. Note that this
       * parameter is not used when loading data by server-side processing, just
       * Ajax sourced data with client-side processing.
       */
      sLoadingRecords: "Loading...",

      /**
       * Text which is displayed when the table is processing a user action
       * (usually a sort command or similar).
       */
      sProcessing: "",

      /**
       * Details the actions that will be taken when the user types into the
       * filtering input text box. The variable "_INPUT_", if used in the string,
       * is replaced with the HTML text box for the filtering input allowing
       * control over where it appears in the string. If "_INPUT_" is not given
       * then the input box is appended to the string automatically.
       */
      sSearch: "Search:",

      /**
       * Assign a `placeholder` attribute to the search `input` element
       *  @type string
       *  @default
       *
       *  @dtopt Language
       *  @name DataTable.defaults.language.searchPlaceholder
       */
      sSearchPlaceholder: "",

      /**
       * All of the language information can be stored in a file on the
       * server-side, which DataTables will look up if this parameter is passed.
       * It must store the URL of the language file, which is in a JSON format,
       * and the object has the same properties as the oLanguage object in the
       * initialiser object (i.e. the above parameters). Please refer to one of
       * the example language files to see how this works in action.
       */
      sUrl: "",

      /**
       * Text shown inside the table records when the is no information to be
       * displayed after filtering. `emptyTable` is shown when there is simply no
       * information in the table at all (regardless of filtering).
       */
      sZeroRecords: "No matching records found",
    },

    /**
     * This parameter allows you to have define the global filtering state at
     * initialisation time. As an object the `search` parameter must be
     * defined, but all other parameters are optional. When `regex` is true,
     * the search string will be treated as a regular expression, when false
     * (default) it will be treated as a straight string. When `smart`
     * DataTables will use it's smart filtering methods (to word match at
     * any point in the data), when false this will not be done.
     */
    oSearch: $.extend({}, DataTable.models.oSearch),

    /**
     * Table and control layout. This replaces the legacy `dom` option.
     */
    layout: {
      topStart: "pageLength",
      topEnd: "search",
      bottomStart: "info",
      bottomEnd: "paging",
    },

    /**
     * Legacy DOM layout option
     */
    sDom: null,

    /**
     * Search delay option. This will throttle full table searches that use the
     * DataTables provided search input element (it does not effect calls to
     * `dt-api search()`, providing a delay before the search is made.
     */
    searchDelay: null,

    /**
     * DataTables features six different built-in options for the buttons to
     * display for pagination control:
     *
     * * `numbers` - Page number buttons only
     * * `simple` - 'Previous' and 'Next' buttons only
     * * 'simple_numbers` - 'Previous' and 'Next' buttons, plus page numbers
     * * `full` - 'First', 'Previous', 'Next' and 'Last' buttons
     * * `full_numbers` - 'First', 'Previous', 'Next' and 'Last' buttons, plus page numbers
     * * `first_last_numbers` - 'First' and 'Last' buttons, plus page numbers
     */
    sPaginationType: "full_numbers",

    /**
     * Enable horizontal scrolling. When a table is too wide to fit into a
     * certain layout, or you have a large number of columns in the table, you
     * can enable x-scrolling to show the table in a viewport, which can be
     * scrolled. This property can be `true` which will allow the table to
     * scroll horizontally when needed, or any CSS unit, or a number (in which
     * case it will be treated as a pixel measurement). Setting as simply `true`
     * is recommended.
     */
    sScrollX: "",

    /**
     * This property can be used to force a DataTable to use more width than it
     * might otherwise do when x-scrolling is enabled. For example if you have a
     * table which requires to be well spaced, this parameter is useful for
     * "over-sizing" the table, and thus forcing scrolling. This property can by
     * any CSS unit, or a number (in which case it will be treated as a pixel
     * measurement).
     */
    sScrollXInner: "",

    /**
     * Enable vertical scrolling. Vertical scrolling will constrain the DataTable
     * to the given height, and enable scrolling for any data which overflows the
     * current viewport. This can be used as an alternative to paging to display
     * a lot of data in a small area (although paging and scrolling can both be
     * enabled at the same time). This property can be any CSS unit, or a number
     * (in which case it will be treated as a pixel measurement).
     */
    sScrollY: "",

    /**
     * __Deprecated__ The functionality provided by this parameter has now been
     * superseded by that provided through `ajax`, which should be used instead.
     *
     * Set the HTTP method that is used to make the Ajax call for server-side
     * processing or Ajax sourced data.
     */
    sServerMethod: "GET",

    /**
     * DataTables makes use of renderers when displaying HTML elements for
     * a table. These renderers can be added or modified by plug-ins to
     * generate suitable mark-up for a site. For example the Bootstrap
     * integration plug-in for DataTables uses a paging button renderer to
     * display pagination buttons in the mark-up required by Bootstrap.
     *
     * For further information about the renderers available see
     * DataTable.ext.renderer
     */
    renderer: null,

    /**
     * Set the data property name that DataTables should use to get a row's id
     * to set as the `id` property in the node.
     */
    rowId: "DT_RowId",

    /**
     * Caption value
     */
    caption: null,
  };

  _fnHungarianMap(DataTable.defaults);

  /*
   * Developer note - See note in model.defaults.js about the use of Hungarian
   * notation and camel case.
   */

  /**
   * Column options that can be given to DataTables at initialisation time.
   *  @namespace
   */
  DataTable.defaults.column = {
    /**
     * Define which column(s) an order will occur on for this column. This
     * allows a column's ordering to take multiple columns into account when
     * doing a sort or use the data from a different column. For example first
     * name / last name columns make sense to do a multi-column sort over the
     * two columns.
     */
    aDataSort: null,
    iDataSort: -1,

    ariaTitle: "",

    /**
     * You can control the default ordering direction, and even alter the
     * behaviour of the sort handler (i.e. only allow ascending ordering etc)
     * using this parameter.
     */
    asSorting: ["asc", "desc", ""],

    /**
     * Enable or disable filtering on the data in this column.
     */
    bSearchable: true,

    /**
     * Enable or disable ordering on this column.
     */
    bSortable: true,

    /**
     * Enable or disable the display of this column.
     */
    bVisible: true,

    /**
     * Developer definable function that is called whenever a cell is created (Ajax source,
     * etc) or processed for input (DOM source). This can be used as a compliment to mRender
     * allowing you to modify the DOM element (add background colour for example) when the
     * element is available.
     */
    fnCreatedCell: null,

    /**
     * This property can be used to read data from any data source property,
     * including deeply nested objects / properties. `data` can be given in a
     * number of different ways which effect its behaviour:
     *
     * * `integer` - treated as an array index for the data source. This is the
     *   default that DataTables uses (incrementally increased for each column).
     * * `string` - read an object property from the data source. There are
     *   three 'special' options that can be used in the string to alter how
     *   DataTables reads the data from the source object:
     *    * `.` - Dotted Javascript notation. Just as you use a `.` in
     *      Javascript to read from nested objects, so to can the options
     *      specified in `data`. For example: `browser.version` or
     *      `browser.name`. If your object parameter name contains a period, use
     *      `\\` to escape it - i.e. `first\\.name`.
     *    * `[]` - Array notation. DataTables can automatically combine data
     *      from and array source, joining the data with the characters provided
     *      between the two brackets. For example: `name[, ]` would provide a
     *      comma-space separated list from the source array. If no characters
     *      are provided between the brackets, the original array source is
     *      returned.
     *    * `()` - Function notation. Adding `()` to the end of a parameter will
     *      execute a function of the name given. For example: `browser()` for a
     *      simple function on the data source, `browser.version()` for a
     *      function in a nested property or even `browser().version` to get an
     *      object property if the function called returns an object. Note that
     *      function notation is recommended for use in `render` rather than
     *      `data` as it is much simpler to use as a renderer.
     * * `null` - use the original data source for the row rather than plucking
     *   data directly from it. This action has effects on two other
     *   initialisation options:
     *    * `defaultContent` - When null is given as the `data` option and
     *      `defaultContent` is specified for the column, the value defined by
     *      `defaultContent` will be used for the cell.
     *    * `render` - When null is used for the `data` option and the `render`
     *      option is specified for the column, the whole data source for the
     *      row is used for the renderer.
     * * `function` - the function given will be executed whenever DataTables
     *   needs to set or get the data for a cell in the column. The function
     *   takes three parameters:
     *    * Parameters:
     *      * `{array|object}` The data source for the row
     *      * `{string}` The type call data requested - this will be 'set' when
     *        setting data or 'filter', 'display', 'type', 'sort' or undefined
     *        when gathering data. Note that when `undefined` is given for the
     *        type DataTables expects to get the raw data for the object back<
     *      * `{*}` Data to set when the second parameter is 'set'.
     *    * Return:
     *      * The return value from the function is not required when 'set' is
     *        the type of call, but otherwise the return is what will be used
     *        for the data requested.
     *
     * Note that `data` is a getter and setter option. If you just require
     * formatting of data for output, you will likely want to use `render` which
     * is simply a getter and thus simpler to use.
     *
     * Note that prior to DataTables 1.9.2 `data` was called `mDataProp`. The
     * name change reflects the flexibility of this property and is consistent
     * with the naming of mRender. If 'mDataProp' is given, then it will still
     * be used by DataTables, as it automatically maps the old name to the new
     * if required.
     */
    mData: null,

    /**
     * This property is the rendering partner to `data` and it is suggested that
     * when you want to manipulate data for display (including filtering,
     * sorting etc) without altering the underlying data for the table, use this
     * property. `render` can be considered to be the the read only companion to
     * `data` which is read / write (then as such more complex). Like `data`
     * this option can be given in a number of different ways to effect its
     * behaviour:
     *
     * * `integer` - treated as an array index for the data source. This is the
     *   default that DataTables uses (incrementally increased for each column).
     * * `string` - read an object property from the data source. There are
     *   three 'special' options that can be used in the string to alter how
     *   DataTables reads the data from the source object:
     *    * `.` - Dotted Javascript notation. Just as you use a `.` in
     *      Javascript to read from nested objects, so to can the options
     *      specified in `data`. For example: `browser.version` or
     *      `browser.name`. If your object parameter name contains a period, use
     *      `\\` to escape it - i.e. `first\\.name`.
     *    * `[]` - Array notation. DataTables can automatically combine data
     *      from and array source, joining the data with the characters provided
     *      between the two brackets. For example: `name[, ]` would provide a
     *      comma-space separated list from the source array. If no characters
     *      are provided between the brackets, the original array source is
     *      returned.
     *    * `()` - Function notation. Adding `()` to the end of a parameter will
     *      execute a function of the name given. For example: `browser()` for a
     *      simple function on the data source, `browser.version()` for a
     *      function in a nested property or even `browser().version` to get an
     *      object property if the function called returns an object.
     * * `object` - use different data for the different data types requested by
     *   DataTables ('filter', 'display', 'type' or 'sort'). The property names
     *   of the object is the data type the property refers to and the value can
     *   defined using an integer, string or function using the same rules as
     *   `render` normally does. Note that an `_` option _must_ be specified.
     *   This is the default value to use if you haven't specified a value for
     *   the data type requested by DataTables.
     * * `function` - the function given will be executed whenever DataTables
     *   needs to set or get the data for a cell in the column. The function
     *   takes three parameters:
     *    * Parameters:
     *      * {array|object} The data source for the row (based on `data`)
     *      * {string} The type call data requested - this will be 'filter',
     *        'display', 'type' or 'sort'.
     *      * {array|object} The full data source for the row (not based on
     *        `data`)
     *    * Return:
     *      * The return value from the function is what will be used for the
     *        data requested.
     */
    mRender: null,

    /**
     * Change the cell type created for the column - either TD cells or TH cells. This
     * can be useful as TH cells have semantic meaning in the table body, allowing them
     * to act as a header for a row (you may wish to add scope='row' to the TH elements).
     */
    sCellType: "td",

    /**
     * Class to give to each cell in this column.
     */
    sClass: "",

    /**
     * When DataTables calculates the column widths to assign to each column,
     * it finds the longest string in each column and then constructs a
     * temporary table and reads the widths from that. The problem with this
     * is that "mmm" is much wider then "iiii", but the latter is a longer
     * string - thus the calculation can go wrong (doing it properly and putting
     * it into an DOM object and measuring that is horribly(!) slow). Thus as
     * a "work around" we provide this option. It will append its value to the
     * text that is found to be the longest string for the column - i.e. padding.
     * Generally you shouldn't need this!
     */
    sContentPadding: "",

    /**
     * Allows a default value to be given for a column's data, and will be used
     * whenever a null data source is encountered (this can be because `data`
     * is set to null, or because the data source itself is null).
     */
    sDefaultContent: null,

    /**
     * This parameter is only used in DataTables' server-side processing. It can
     * be exceptionally useful to know what columns are being displayed on the
     * client side, and to map these to database fields. When defined, the names
     * also allow DataTables to reorder information from the server if it comes
     * back in an unexpected order (i.e. if you switch your columns around on the
     * client-side, your server-side code does not also need updating).
     */
    sName: "",

    /**
     * Defines a data source type for the ordering which can be used to read
     * real-time information from the table (updating the internally cached
     * version) prior to ordering. This allows ordering to occur on user
     * editable elements such as form inputs.
     */
    sSortDataType: "std",

    /**
     * The title of this column.
     */
    sTitle: null,

    /**
     * The type allows you to specify how the data for this column will be
     * ordered. Four types (string, numeric, date and html (which will strip
     * HTML tags before ordering)) are currently available. Note that only date
     * formats understood by Javascript's Date() object will be accepted as type
     * date. For example: "Mar 26, 2008 5:03 PM". May take the values: 'string',
     * 'numeric', 'date' or 'html' (by default). Further types can be adding
     * through plug-ins.
     */
    sType: null,

    /**
     * Defining the width of the column, this parameter may take any CSS value
     * (3em, 20px etc). DataTables applies 'smart' widths to columns which have not
     * been given a specific width through this interface ensuring that the table
     * remains readable.
     */
    sWidth: null,
  };

  _fnHungarianMap(DataTable.defaults.column);

  /**
   * DataTables settings object - this holds all the information needed for a
   * given table, including configuration, data and current application of the
   * table options. DataTables does not have a single instance for each DataTable
   * with the settings attached to that instance, but rather instances of the
   * DataTable "class" are created on-the-fly as needed (typically by a
   * $().dataTable() call) and the settings object is then applied to that
   * instance.
   *
   * Note that this object is related to {@link DataTable.defaults} but this
   * one is the internal data store for DataTables's cache of columns. It should
   * NOT be manipulated outside of DataTables. Any configuration should be done
   * through the initialisation options.
   */
  DataTable.models.oSettings = {
    /**
     * Primary features of DataTables and their enablement state.
     */
    oFeatures: {
      /**
       * Flag to say if DataTables should automatically try to calculate the
       * optimum table and columns widths (true) or not (false).
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bAutoWidth: null,

      /**
       * Delay the creation of TR and TD elements until they are actually
       * needed by a driven page draw. This can give a significant speed
       * increase for Ajax source and Javascript source data, but makes no
       * difference at all for DOM and server-side processing tables.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bDeferRender: null,

      /**
       * Enable filtering on the table or not. Note that if this is disabled
       * then there is no filtering at all on the table, including fnFilter.
       * To just remove the filtering input use sDom and remove the 'f' option.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bFilter: null,

      /**
       * Used only for compatiblity with DT1
       * @deprecated
       */
      bInfo: true,

      /**
       * Used only for compatiblity with DT1
       * @deprecated
       */
      bLengthChange: true,

      /**
       * Pagination enabled or not. Note that if this is disabled then length
       * changing must also be disabled.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bPaginate: null,

      /**
       * Processing indicator enable flag whenever DataTables is enacting a
       * user request - typically an Ajax request for server-side processing.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bProcessing: null,

      /**
       * Server-side processing enabled flag - when enabled DataTables will
       * get all data from the server for every draw - there is no filtering,
       * sorting or paging done on the client-side.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bServerSide: null,

      /**
       * Sorting enablement flag.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bSort: null,

      /**
       * Multi-column sorting
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bSortMulti: null,

      /**
       * Apply a class to the columns which are being sorted to provide a
       * visual highlight or not. This can slow things down when enabled since
       * there is a lot of DOM interaction.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bSortClasses: null,

      /**
       * State saving enablement flag.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bStateSave: null,
    },

    /**
     * Scrolling settings for a table.
     */
    oScroll: {
      /**
       * When the table is shorter in height than sScrollY, collapse the
       * table container down to the height of the table (when true).
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      bCollapse: null,

      /**
       * Width of the scrollbar for the web-browser's platform. Calculated
       * during table initialisation.
       */
      iBarWidth: 0,

      /**
       * Viewport width for horizontal scrolling. Horizontal scrolling is
       * disabled if an empty string.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      sX: null,

      /**
       * Width to expand the table to when using x-scrolling. Typically you
       * should not need to use this.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       *  @deprecated
       */
      sXInner: null,

      /**
       * Viewport height for vertical scrolling. Vertical scrolling is disabled
       * if an empty string.
       * Note that this parameter will be set by the initialisation routine. To
       * set a default use {@link DataTable.defaults}.
       */
      sY: null,
    },

    /**
     * Language information for the table.
     */
    oLanguage: {
      /**
       * Information callback function. See
       * {@link DataTable.defaults.fnInfoCallback}
       */
      fnInfoCallback: null,
    },

    /**
     * Browser support parameters
     */
    oBrowser: {
      /**
       * Determine if the vertical scrollbar is on the right or left of the
       * scrolling container - needed for rtl language layout, although not
       * all browsers move the scrollbar (Safari).
       */
      bScrollbarLeft: false,

      /**
       * Browser scrollbar width
       */
      barWidth: 0,
    },

    ajax: null,

    /**
     * Array referencing the nodes which are used for the features. The
     * parameters of this object match what is allowed by sDom - i.e.
     *   <ul>
     *     <li>'l' - Length changing</li>
     *     <li>'f' - Filtering input</li>
     *     <li>'t' - The table!</li>
     *     <li>'i' - Information</li>
     *     <li>'p' - Pagination</li>
     *     <li>'r' - pRocessing</li>
     *   </ul>
     */
    aanFeatures: [],

    /**
     * Store data information - see {@link DataTable.models.oRow} for detailed
     * information.
     */
    aoData: [],

    /**
     * Array of indexes which are in the current display (after filtering etc)
     */
    aiDisplay: [],

    /**
     * Array of indexes for display - no filtering
     */
    aiDisplayMaster: [],

    /**
     * Map of row ids to data indexes
     */
    aIds: {},

    /**
     * Store information about each column that is in use
     */
    aoColumns: [],

    /**
     * Store information about the table's header
     */
    aoHeader: [],

    /**
     * Store information about the table's footer
     */
    aoFooter: [],

    /**
     * Store the applied global search information in case we want to force a
     * research or compare the old search to a new one.
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    oPreviousSearch: {},

    /**
     * Store for named searches
     */
    searchFixed: {},

    /**
     * Store the applied search for each column - see
     * {@link DataTable.models.oSearch} for the format that is used for the
     * filtering information for each column.
     */
    aoPreSearchCols: [],

    /**
     * Sorting that is applied to the table. Note that the inner arrays are
     * used in the following manner:
     * <ul>
     *   <li>Index 0 - column number</li>
     *   <li>Index 1 - current sorting direction</li>
     * </ul>
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    aaSorting: null,

    /**
     * Sorting that is always applied to the table (i.e. prefixed in front of
     * aaSorting).
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    aaSortingFixed: [],

    /**
     * If restoring a table - we should restore its width
     */
    sDestroyWidth: 0,

    /**
     * Callback functions array for every time a row is inserted (i.e. on a draw).
     */
    aoRowCallback: [],

    /**
     * Callback functions for the header on each draw.
     */
    aoHeaderCallback: [],

    /**
     * Callback function for the footer on each draw.
     */
    aoFooterCallback: [],

    /**
     * Array of callback functions for draw callback functions
     */
    aoDrawCallback: [],

    /**
     * Array of callback functions for row created function
     */
    aoRowCreatedCallback: [],

    /**
     * Callback functions for just before the table is redrawn. A return of
     * false will be used to cancel the draw.
     */
    aoPreDrawCallback: [],

    /**
     * Callback functions for when the table has been initialised.
     */
    aoInitComplete: [],

    /**
     * Callbacks for modifying the settings to be stored for state saving, prior to
     * saving state.
     */
    aoStateSaveParams: [],

    /**
     * Callbacks for modifying the settings that have been stored for state saving
     * prior to using the stored values to restore the state.
     */
    aoStateLoadParams: [],

    /**
     * Callbacks for operating on the settings object once the saved state has been
     * loaded
     */
    aoStateLoaded: [],

    /**
     * Cache the table ID for quick access
     */
    sTableId: "",

    /**
     * The TABLE node for the main table
     */
    nTable: null,

    /**
     * Permanent ref to the thead element
     */
    nTHead: null,

    /**
     * Permanent ref to the tfoot element - if it exists
     */
    nTFoot: null,

    /**
     * Permanent ref to the tbody element
     */
    nTBody: null,

    /**
     * Cache the wrapper node (contains all DataTables controlled elements)
     */
    nTableWrapper: null,

    /**
     * Indicate if all required information has been read in
     */
    bInitialised: false,

    /**
     * Information about open rows. Each object in the array has the parameters
     * 'nTr' and 'nParent'
     */
    aoOpenRows: [],

    /**
     * Dictate the positioning of DataTables' control elements - see
     * {@link DataTable.model.oInit.sDom}.
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    sDom: null,

    /**
     * Search delay (in mS)
     */
    searchDelay: null,

    /**
     * Which type of pagination should be used.
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    sPaginationType: "two_button",

    /**
     * Number of paging controls on the page. Only used for backwards compatibility
     */
    pagingControls: 0,

    /**
     * The state duration (for `stateSave`) in seconds.
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    iStateDuration: 0,

    /**
     * Array of callback functions for state saving. Each array element is an
     * object with the following parameters:
     *   <ul>
     *     <li>function:fn - function to call. Takes two parameters, oSettings
     *       and the JSON string to save that has been thus far created. Returns
     *       a JSON string to be inserted into a json object
     *       (i.e. '"param": [ 0, 1, 2]')</li>
     *     <li>string:sName - name of callback</li>
     *   </ul>
     */
    aoStateSave: [],

    /**
     * Array of callback functions for state loading. Each array element is an
     * object with the following parameters:
     *   <ul>
     *     <li>function:fn - function to call. Takes two parameters, oSettings
     *       and the object stored. May return false to cancel state loading</li>
     *     <li>string:sName - name of callback</li>
     *   </ul>
     */
    aoStateLoad: [],

    /**
     * State that was saved. Useful for back reference
     */
    oSavedState: null,

    /**
     * State that was loaded. Useful for back reference
     */
    oLoadedState: null,

    /**
     * Note if draw should be blocked while getting data
     */
    bAjaxDataGet: true,

    /**
     * The last jQuery XHR object that was used for server-side data gathering.
     * This can be used for working with the XHR information in one of the
     * callbacks
     */
    jqXHR: null,

    /**
     * JSON returned from the server in the last Ajax request
     */
    json: undefined,

    /**
     * Data submitted as part of the last Ajax request
     */
    oAjaxData: undefined,

    /**
     * Send the XHR HTTP method - GET or POST (could be PUT or DELETE if
     * required).
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    sServerMethod: null,

    /**
     * Format numbers for display.
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    fnFormatNumber: null,

    /**
     * List of options that can be used for the user selectable length menu.
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    aLengthMenu: null,

    /**
     * Counter for the draws that the table does. Also used as a tracker for
     * server-side processing
     */
    iDraw: 0,

    /**
     * Indicate if a redraw is being done - useful for Ajax
     */
    bDrawing: false,

    /**
     * Draw index (iDraw) of the last error when parsing the returned data
     */
    iDrawError: -1,

    /**
     * Paging display length
     */
    _iDisplayLength: 10,

    /**
     * Paging start point - aiDisplay index
     */
    _iDisplayStart: 0,

    /**
     * Server-side processing - number of records in the result set
     * (i.e. before filtering), Use fnRecordsTotal rather than
     * this property to get the value of the number of records, regardless of
     * the server-side processing setting.
     */
    _iRecordsTotal: 0,

    /**
     * Server-side processing - number of records in the current display set
     * (i.e. after filtering). Use fnRecordsDisplay rather than
     * this property to get the value of the number of records, regardless of
     * the server-side processing setting.
     */
    _iRecordsDisplay: 0,

    /**
     * The classes to use for the table
     */
    oClasses: {},

    /**
     * Flag attached to the settings object so you can check in the draw
     * callback if filtering has been done in the draw. Deprecated in favour of
     * events.
     *  @deprecated
     */
    bFiltered: false,

    /**
     * Flag attached to the settings object so you can check in the draw
     * callback if sorting has been done in the draw. Deprecated in favour of
     * events.
     *  @deprecated
     */
    bSorted: false,

    /**
     * Indicate that if multiple rows are in the header and there is more than
     * one unique cell per column, if the top one (true) or bottom one (false)
     * should be used for sorting / title by DataTables.
     * Note that this parameter will be set by the initialisation routine. To
     * set a default use {@link DataTable.defaults}.
     */
    bSortCellsTop: null,

    /**
     * Initialisation object that is used for the table
     */
    oInit: null,

    /**
     * Destroy callback functions - for plug-ins to attach themselves to the
     * destroy so they can clean up markup and events.
     */
    aoDestroyCallback: [],

    /**
     * Get the number of records in the current record set, before filtering
     */
    fnRecordsTotal: function () {
      return _fnDataSource(this) == "ssp" ? this._iRecordsTotal * 1 : this.aiDisplayMaster.length;
    },

    /**
     * Get the number of records in the current record set, after filtering
     */
    fnRecordsDisplay: function () {
      return _fnDataSource(this) == "ssp" ? this._iRecordsDisplay * 1 : this.aiDisplay.length;
    },

    /**
     * Get the display end point - aiDisplay index
     */
    fnDisplayEnd: function () {
      var len = this._iDisplayLength,
        start = this._iDisplayStart,
        calc = start + len,
        records = this.aiDisplay.length,
        features = this.oFeatures,
        paginate = features.bPaginate;

      if (features.bServerSide) {
        return paginate === false || len === -1 ? start + records : Math.min(start + len, this._iRecordsDisplay);
      } else {
        return !paginate || calc > records || len === -1 ? records : calc;
      }
    },

    /**
     * The DataTables object for this table
     */
    oInstance: null,

    /**
     * Unique identifier for each instance of the DataTables object. If there
     * is an ID on the table node, then it takes that value, otherwise an
     * incrementing internal counter is used.
     */
    sInstance: null,

    /**
     * tabindex attribute value that is added to DataTables control elements, allowing
     * keyboard navigation of the table and its controls.
     */
    iTabIndex: 0,

    /**
     * DIV container for the footer scrolling table if scrolling
     */
    nScrollHead: null,

    /**
     * DIV container for the footer scrolling table if scrolling
     */
    nScrollFoot: null,

    /**
     * Last applied sort
     */
    aLastSort: [],

    /**
     * Stored plug-in instances
     */
    oPlugins: {},

    /**
     * Function used to get a row's id from the row's data
     */
    rowIdFn: null,

    /**
     * Data location where to store a row's id
     */
    rowId: null,

    caption: "",

    captionNode: null,

    colgroup: null,
  };

  /**
   * Extension object for DataTables that is used to provide all extension
   * options.
   *
   * Note that the `DataTable.ext` object is available through
   * `jQuery.fn.dataTable.ext` where it may be accessed and manipulated. It is
   * also aliased to `jQuery.fn.dataTableExt` for historic reasons.
   *  @namespace
   *  @extends DataTable.models.ext
   */

  /**
   * DataTables extensions
   *
   * This namespace acts as a collection area for plug-ins that can be used to
   * extend DataTables capabilities. Indeed many of the build in methods
   * use this method to provide their own capabilities (sorting methods for
   * example).
   *
   * Note that this namespace is aliased to `jQuery.fn.dataTableExt` for legacy
   * reasons
   *
   *  @namespace
   */
  DataTable.ext = _ext = {
    /**
     * Buttons. For use with the Buttons extension for DataTables. This is
     * defined here so other extensions can define buttons regardless of load
     * order. It is _not_ used by DataTables core.
     *
     *  @type object
     *  @default {}
     */
    buttons: {},

    /**
     * Element class names
     *
     *  @type object
     *  @default {}
     */
    classes: {},

    /**
     * DataTables build type (expanded by the download builder)
     *
     *  @type string
     */
    builder: "-source-",

    /**
     * Error reporting.
     *
     * How should DataTables report an error. Can take the value 'alert',
     * 'throw', 'none' or a function.
     *
     *  @type string|function
     *  @default alert
     */
    errMode: "alert",

    /**
     * Legacy so v1 plug-ins don't throw js errors on load
     */
    feature: [],

    /**
     * Feature plug-ins.
     *
     * This is an object of callbacks which provide the features for DataTables
     * to be initialised via the `layout` option.
     */
    features: {},

    /**
     * Row searching.
     *
     * This method of searching is complimentary to the default type based
     * searching, and a lot more comprehensive as it allows you complete control
     * over the searching logic. Each element in this array is a function
     * (parameters described below) that is called for every row in the table,
     * and your logic decides if it should be included in the searching data set
     * or not.
     *
     * Searching functions have the following input parameters:
     *
     * 1. `{object}` DataTables settings object: see
     *    {@link DataTable.models.oSettings}
     * 2. `{array|object}` Data for the row to be processed (same as the
     *    original format that was passed in as the data source, or an array
     *    from a DOM data source
     * 3. `{int}` Row index ({@link DataTable.models.oSettings.aoData}), which
     *    can be useful to retrieve the `TR` element if you need DOM interaction.
     *
     * And the following return is expected:
     *
     * * {boolean} Include the row in the searched result set (true) or not
     *   (false)
     *
     * Note that as with the main search ability in DataTables, technically this
     * is "filtering", since it is subtractive. However, for consistency in
     * naming we call it searching here.
     *
     *  @type array
     *  @default []
     *
     *  @example
     *    // The following example shows custom search being applied to the
     *    // fourth column (i.e. the data[3] index) based on two input values
     *    // from the end-user, matching the data in a certain range.
     *    $.fn.dataTable.ext.search.push(
     *      function( settings, data, dataIndex ) {
     *        var min = document.getElementById('min').value * 1;
     *        var max = document.getElementById('max').value * 1;
     *        var version = data[3] == "-" ? 0 : data[3]*1;
     *
     *        if ( min == "" && max == "" ) {
     *          return true;
     *        }
     *        else if ( min == "" && version < max ) {
     *          return true;
     *        }
     *        else if ( min < version && "" == max ) {
     *          return true;
     *        }
     *        else if ( min < version && version < max ) {
     *          return true;
     *        }
     *        return false;
     *      }
     *    );
     */
    search: [],

    /**
     * Selector extensions
     *
     * The `selector` option can be used to extend the options available for the
     * selector modifier options (`selector-modifier` object data type) that
     * each of the three built in selector types offer (row, column and cell +
     * their plural counterparts). For example the Select extension uses this
     * mechanism to provide an option to select only rows, columns and cells
     * that have been marked as selected by the end user (`{selected: true}`),
     * which can be used in conjunction with the existing built in selector
     * options.
     *
     * Each property is an array to which functions can be pushed. The functions
     * take three attributes:
     *
     * * Settings object for the host table
     * * Options object (`selector-modifier` object type)
     * * Array of selected item indexes
     *
     * The return is an array of the resulting item indexes after the custom
     * selector has been applied.
     *
     *  @type object
     */
    selector: {
      cell: [],
      column: [],
      row: [],
    },

    /**
     * Legacy configuration options. Enable and disable legacy options that
     * are available in DataTables.
     *
     *  @type object
     */
    legacy: {
      /**
       * Enable / disable DataTables 1.9 compatible server-side processing
       * requests
       *
       *  @type boolean
       *  @default null
       */
      ajax: null,
    },

    /**
     * Pagination plug-in methods.
     *
     * Each entry in this object is a function and defines which buttons should
     * be shown by the pagination rendering method that is used for the table:
     * {@link DataTable.ext.renderer.pageButton}. The renderer addresses how the
     * buttons are displayed in the document, while the functions here tell it
     * what buttons to display. This is done by returning an array of button
     * descriptions (what each button will do).
     *
     * Pagination types (the four built in options and any additional plug-in
     * options defined here) can be used through the `paginationType`
     * initialisation parameter.
     *
     * The functions defined take two parameters:
     *
     * 1. `{int} page` The current page index
     * 2. `{int} pages` The number of pages in the table
     *
     * Each function is expected to return an array where each element of the
     * array can be one of:
     *
     * * `first` - Jump to first page when activated
     * * `last` - Jump to last page when activated
     * * `previous` - Show previous page when activated
     * * `next` - Show next page when activated
     * * `{int}` - Show page of the index given
     * * `{array}` - A nested array containing the above elements to add a
     *   containing 'DIV' element (might be useful for styling).
     *
     * Note that DataTables v1.9- used this object slightly differently whereby
     * an object with two functions would be defined for each plug-in. That
     * ability is still supported by DataTables 1.10+ to provide backwards
     * compatibility, but this option of use is now decremented and no longer
     * documented in DataTables 1.10+.
     *
     *  @type object
     *  @default {}
     *
     *  @example
     *    // Show previous, next and current page buttons only
     *    $.fn.dataTableExt.oPagination.current = function ( page, pages ) {
     *      return [ 'previous', page, 'next' ];
     *    };
     */
    pager: {},

    renderer: {
      pageButton: {},
      header: {},
    },

    /**
     * Ordering plug-ins - custom data source
     *
     * The extension options for ordering of data available here is complimentary
     * to the default type based ordering that DataTables typically uses. It
     * allows much greater control over the the data that is being used to
     * order a column, but is necessarily therefore more complex.
     *
     * This type of ordering is useful if you want to do ordering based on data
     * live from the DOM (for example the contents of an 'input' element) rather
     * than just the static string that DataTables knows of.
     *
     * The way these plug-ins work is that you create an array of the values you
     * wish to be ordering for the column in question and then return that
     * array. The data in the array much be in the index order of the rows in
     * the table (not the currently ordering order!). Which order data gathering
     * function is run here depends on the `dt-init columns.orderDataType`
     * parameter that is used for the column (if any).
     *
     * The functions defined take two parameters:
     *
     * 1. `{object}` DataTables settings object: see
     *    {@link DataTable.models.oSettings}
     * 2. `{int}` Target column index
     *
     * Each function is expected to return an array:
     *
     * * `{array}` Data for the column to be ordering upon
     *
     *  @type array
     *
     *  @example
     *    // Ordering using `input` node values
     *    $.fn.dataTable.ext.order['dom-text'] = function  ( settings, col )
     *    {
     *      return this.api().column( col, {order:'index'} ).nodes().map( function ( td, i ) {
     *        return $('input', td).val();
     *      } );
     *    }
     */
    order: {},

    /**
     * Type based plug-ins.
     *
     * Each column in DataTables has a type assigned to it, either by automatic
     * detection or by direct assignment using the `type` option for the column.
     * The type of a column will effect how it is ordering and search (plug-ins
     * can also make use of the column type if required).
     *
     * @namespace
     */
    type: {
      /**
       * Automatic column class assignment
       */
      className: {},

      /**
       * Type detection functions.
       *
       * The functions defined in this object are used to automatically detect
       * a column's type, making initialisation of DataTables super easy, even
       * when complex data is in the table.
       *
       * The functions defined take two parameters:
       *
       *  1. `{*}` Data from the column cell to be analysed
       *  2. `{settings}` DataTables settings object. This can be used to
       *     perform context specific type detection - for example detection
       *     based on language settings such as using a comma for a decimal
       *     place. Generally speaking the options from the settings will not
       *     be required
       *
       * Each function is expected to return:
       *
       * * `{string|null}` Data type detected, or null if unknown (and thus
       *   pass it on to the other type detection functions.
       *
       *  @type array
       *
       *  @example
       *    // Currency type detection plug-in:
       *    $.fn.dataTable.ext.type.detect.push(
       *      function ( data, settings ) {
       *        // Check the numeric part
       *        if ( ! data.substring(1).match(/[0-9]/) ) {
       *          return null;
       *        }
       *
       *        // Check prefixed by currency
       *        if ( data.charAt(0) == '$' || data.charAt(0) == '&pound;' ) {
       *          return 'currency';
       *        }
       *        return null;
       *      }
       *    );
       */
      detect: [],

      /**
       * Automatic renderer assignment
       */
      render: {},

      /**
       * Type based search formatting.
       *
       * The type based searching functions can be used to pre-format the
       * data to be search on. For example, it can be used to strip HTML
       * tags or to de-format telephone numbers for numeric only searching.
       *
       * Note that is a search is not defined for a column of a given type,
       * no search formatting will be performed.
       *
       * Pre-processing of searching data plug-ins - When you assign the sType
       * for a column (or have it automatically detected for you by DataTables
       * or a type detection plug-in), you will typically be using this for
       * custom sorting, but it can also be used to provide custom searching
       * by allowing you to pre-processing the data and returning the data in
       * the format that should be searched upon. This is done by adding
       * functions this object with a parameter name which matches the sType
       * for that target column. This is the corollary of <i>afnSortData</i>
       * for searching data.
       *
       * The functions defined take a single parameter:
       *
       *  1. `{*}` Data from the column cell to be prepared for searching
       *
       * Each function is expected to return:
       *
       * * `{string|null}` Formatted string that will be used for the searching.
       *
       *  @type object
       *  @default {}
       *
       *  @example
       *    $.fn.dataTable.ext.type.search['title-numeric'] = function ( d ) {
       *      return d.replace(/\n/g," ").replace( /<.*?>/g, "" );
       *    }
       */
      search: {},

      /**
       * Type based ordering.
       *
       * The column type tells DataTables what ordering to apply to the table
       * when a column is sorted upon. The order for each type that is defined,
       * is defined by the functions available in this object.
       *
       * Each ordering option can be described by three properties added to
       * this object:
       *
       * * `{type}-pre` - Pre-formatting function
       * * `{type}-asc` - Ascending order function
       * * `{type}-desc` - Descending order function
       *
       * All three can be used together, only `{type}-pre` or only
       * `{type}-asc` and `{type}-desc` together. It is generally recommended
       * that only `{type}-pre` is used, as this provides the optimal
       * implementation in terms of speed, although the others are provided
       * for compatibility with existing Javascript sort functions.
       *
       * `{type}-pre`: Functions defined take a single parameter:
       *
       *  1. `{*}` Data from the column cell to be prepared for ordering
       *
       * And return:
       *
       * * `{*}` Data to be sorted upon
       *
       * `{type}-asc` and `{type}-desc`: Functions are typical Javascript sort
       * functions, taking two parameters:
       *
       *  1. `{*}` Data to compare to the second parameter
       *  2. `{*}` Data to compare to the first parameter
       *
       * And returning:
       *
       * * `{*}` Ordering match: <0 if first parameter should be sorted lower
       *   than the second parameter, ===0 if the two parameters are equal and
       *   >0 if the first parameter should be sorted height than the second
       *   parameter.
       *
       *  @type object
       *  @default {}
       *
       *  @example
       *    // Numeric ordering of formatted numbers with a pre-formatter
       *    $.extend( $.fn.dataTable.ext.type.order, {
       *      "string-pre": function(x) {
       *        a = (a === "-" || a === "") ? 0 : a.replace( /[^\d\-\.]/g, "" );
       *        return parseFloat( a );
       *      }
       *    } );
       *
       *  @example
       *    // Case-sensitive string ordering, with no pre-formatting method
       *    $.extend( $.fn.dataTable.ext.order, {
       *      "string-case-asc": function(x,y) {
       *        return ((x < y) ? -1 : ((x > y) ? 1 : 0));
       *      },
       *      "string-case-desc": function(x,y) {
       *        return ((x < y) ? 1 : ((x > y) ? -1 : 0));
       *      }
       *    } );
       */
      order: {},
    },

    /**
     * Unique DataTables instance counter
     *
     * @type int
     * @private
     */
    _unique: 0,

    //
    // Depreciated
    // The following properties are retained for backwards compatibility only.
    // The should not be used in new projects and will be removed in a future
    // version
    //

    /**
     * Version check function.
     *  @type function
     *  @depreciated Since 1.10
     */
    fnVersionCheck: DataTable.fnVersionCheck,

    /**
     * Index for what 'this' index API functions should use
     *  @type int
     *  @deprecated Since v1.10
     */
    iApiIndex: 0,

    /**
     * Software version
     *  @type string
     *  @deprecated Since v1.10
     */
    sVersion: DataTable.version,
  };

  //
  // Backwards compatibility. Alias to pre 1.10 Hungarian notation counter parts
  //
  $.extend(_ext, {
    afnFiltering: _ext.search,
    aTypes: _ext.type.detect,
    ofnSearch: _ext.type.search,
    oSort: _ext.type.order,
    afnSortData: _ext.order,
    aoFeatures: _ext.feature,
    oStdClasses: _ext.classes,
    oPagination: _ext.pager,
  });

  $.extend(DataTable.ext.classes, {
    container: "dt-container",
    empty: {
      row: "dt-empty",
    },
    info: {
      container: "dt-info",
    },
    length: {
      container: "dt-length",
      select: "dt-input",
    },
    order: {
      canAsc: "dt-orderable-asc",
      canDesc: "dt-orderable-desc",
      isAsc: "dt-ordering-asc",
      isDesc: "dt-ordering-desc",
      none: "dt-orderable-none",
      position: "sorting_",
    },
    processing: {
      container: "dt-processing",
    },
    scrolling: {
      body: "dt-scroll-body",
      container: "dt-scroll",
      footer: {
        self: "dt-scroll-foot",
        inner: "dt-scroll-footInner",
      },
      header: {
        self: "dt-scroll-head",
        inner: "dt-scroll-headInner",
      },
    },
    search: {
      container: "dt-search",
      input: "dt-input",
    },
    table: "dataTable",
    tbody: {
      cell: "",
      row: "",
    },
    thead: {
      cell: "",
      row: "",
    },
    tfoot: {
      cell: "",
      row: "",
    },
    paging: {
      active: "current",
      button: "dt-paging-button",
      container: "dt-paging",
      disabled: "disabled",
    },
  });

  var extPagination = DataTable.ext.pager;

  // Paging buttons configuration
  $.extend(extPagination, {
    simple: function () {
      return ["previous", "next"];
    },

    full: function () {
      return ["first", "previous", "next", "last"];
    },

    numbers: function () {
      return ["numbers"];
    },

    simple_numbers: function () {
      return ["previous", "numbers", "next"];
    },

    full_numbers: function () {
      return ["first", "previous", "numbers", "next", "last"];
    },

    first_last: function () {
      return ["first", "last"];
    },

    first_last_numbers: function () {
      return ["first", "numbers", "last"];
    },

    // For testing and plug-ins to use
    _numbers: _pagingNumbers,

    // Number of number buttons - legacy, use `numbers` option for paging feature
    numbers_length: 7,
  });

  $.extend(true, DataTable.ext.renderer, {
    pagingButton: {
      _: function (settings, buttonType, content, active, disabled) {
        var classes = settings.oClasses.paging;
        var btnClasses = [classes.button];
        var btn;

        if (active) {
          btnClasses.push(classes.active);
        }

        if (disabled) {
          btnClasses.push(classes.disabled);
        }

        if (buttonType === "ellipsis") {
          btn = $('<span class="ellipsis"></span>').html(content)[0];
        } else {
          btn = $("<button>", {
            class: btnClasses.join(" "),
            role: "link",
            type: "button",
          }).html(content);
        }

        return {
          display: btn,
          clicker: btn,
        };
      },
    },

    pagingContainer: {
      _: function (settings, buttons) {
        // No wrapping element - just append directly to the host
        return buttons;
      },
    },
  });

  // Common function to remove new lines, strip HTML and diacritic control
  var _filterString = function (stripHtml, normalize) {
    return function (str) {
      if (_empty(str) || typeof str !== "string") {
        return str;
      }

      str = str.replace(_re_new_lines, " ");

      if (stripHtml) {
        str = _stripHtml(str);
      }

      if (normalize) {
        str = _normalize(str, false);
      }

      return str;
    };
  };

  /*
   * Public helper functions. These aren't used internally by DataTables, or
   * called by any of the options passed into DataTables, but they can be used
   * externally by developers working with DataTables. They are helper functions
   * to make working with DataTables a little bit easier.
   */

  function __mldFnName(name) {
    return name.replace(/[\W]/g, "_");
  }

  // Common logic for moment, luxon or a date action
  function __mld(dt, momentFn, luxonFn, dateFn, arg1) {
    if (window.moment) {
      return dt[momentFn](arg1);
    } else if (window.luxon) {
      return dt[luxonFn](arg1);
    }

    return dateFn ? dt[dateFn](arg1) : dt;
  }

  var __mlWarning = false;
  function __mldObj(d, format, locale) {
    var dt;

    if (window.moment) {
      dt = window.moment.utc(d, format, locale, true);

      if (!dt.isValid()) {
        return null;
      }
    } else if (window.luxon) {
      dt = format && typeof d === "string" ? window.luxon.DateTime.fromFormat(d, format) : window.luxon.DateTime.fromISO(d);

      if (!dt.isValid) {
        return null;
      }

      dt.setLocale(locale);
    } else if (!format) {
      // No format given, must be ISO
      dt = new Date(d);
    } else {
      if (!__mlWarning) {
        alert("DataTables warning: Formatted date without Moment.js or Luxon - https://datatables.net/tn/17");
      }

      __mlWarning = true;
    }

    return dt;
  }

  // Wrapper for date, datetime and time which all operate the same way with the exception of
  // the output string for auto locale support
  function __mlHelper(localeString) {
    return function (from, to, locale, def) {
      // Luxon and Moment support
      // Argument shifting
      if (arguments.length === 0) {
        locale = "en";
        to = null; // means toLocaleString
        from = null; // means iso8601
      } else if (arguments.length === 1) {
        locale = "en";
        to = from;
        from = null;
      } else if (arguments.length === 2) {
        locale = to;
        to = from;
        from = null;
      }

      var typeName = "datetime" + (to ? "-" + __mldFnName(to) : "");

      // Add type detection and sorting specific to this date format - we need to be able to identify
      // date type columns as such, rather than as numbers in extensions. Hence the need for this.
      if (!DataTable.ext.type.order[typeName]) {
        DataTable.type(typeName, {
          detect: function (d) {
            // The renderer will give the value to type detect as the type!
            return d === typeName ? typeName : false;
          },
          order: {
            pre: function (d) {
              // The renderer gives us Moment, Luxon or Date obects for the sorting, all of which have a
              // `valueOf` which gives milliseconds epoch
              return d.valueOf();
            },
          },
          className: "dt-right",
        });
      }

      return function (d, type) {
        // Allow for a default value
        if (d === null || d === undefined) {
          if (def === "--now") {
            // We treat everything as UTC further down, so no changes are
            // made, as such need to get the local date / time as if it were
            // UTC
            var local = new Date();
            d = new Date(Date.UTC(local.getFullYear(), local.getMonth(), local.getDate(), local.getHours(), local.getMinutes(), local.getSeconds()));
          } else {
            d = "";
          }
        }

        if (type === "type") {
          // Typing uses the type name for fast matching
          return typeName;
        }

        if (d === "") {
          return type !== "sort" ? "" : __mldObj("0000-01-01 00:00:00", null, locale);
        }

        // Shortcut. If `from` and `to` are the same, we are using the renderer to
        // format for ordering, not display - its already in the display format.
        if (to !== null && from === to && type !== "sort" && type !== "type" && !(d instanceof Date)) {
          return d;
        }

        var dt = __mldObj(d, from, locale);

        if (dt === null) {
          return d;
        }

        if (type === "sort") {
          return dt;
        }

        var formatted = to === null ? __mld(dt, "toDate", "toJSDate", "")[localeString]() : __mld(dt, "format", "toFormat", "toISOString", to);

        // XSS protection
        return type === "display" ? _escapeHtml(formatted) : formatted;
      };
    };
  }

  // Based on locale, determine standard number formatting
  // Fallback for legacy browsers is US English
  var __thousands = ",";
  var __decimal = ".";

  if (window.Intl !== undefined) {
    try {
      var num = new Intl.NumberFormat().formatToParts(100000.1);

      for (var i = 0; i < num.length; i++) {
        if (num[i].type === "group") {
          __thousands = num[i].value;
        } else if (num[i].type === "decimal") {
          __decimal = num[i].value;
        }
      }
    } catch (e) {
      // noop
    }
  }

  // Formatted date time detection - use by declaring the formats you are going to use
  DataTable.datetime = function (format, locale) {
    var typeName = "datetime-detect-" + __mldFnName(format);

    if (!locale) {
      locale = "en";
    }

    if (!DataTable.ext.type.order[typeName]) {
      DataTable.type(typeName, {
        detect: function (d) {
          var dt = __mldObj(d, format, locale);
          return d === "" || dt ? typeName : false;
        },
        order: {
          pre: function (d) {
            return __mldObj(d, format, locale) || 0;
          },
        },
        className: "dt-right",
      });
    }
  };

  /**
   * Helpers for `columns.render`.
   *
   * The options defined here can be used with the `columns.render` initialisation
   * option to provide a display renderer. The following functions are defined:
   *
   * * `moment` - Uses the MomentJS library to convert from a given format into another.
   * This renderer has three overloads:
   *   * 1 parameter:
   *     * `string` - Format to convert to (assumes input is ISO8601 and locale is `en`)
   *   * 2 parameters:
   *     * `string` - Format to convert from
   *     * `string` - Format to convert to. Assumes `en` locale
   *   * 3 parameters:
   *     * `string` - Format to convert from
   *     * `string` - Format to convert to
   *     * `string` - Locale
   * * `number` - Will format numeric data (defined by `columns.data`) for
   *   display, retaining the original unformatted data for sorting and filtering.
   *   It takes 5 parameters:
   *   * `string` - Thousands grouping separator
   *   * `string` - Decimal point indicator
   *   * `integer` - Number of decimal points to show
   *   * `string` (optional) - Prefix.
   *   * `string` (optional) - Postfix (/suffix).
   * * `text` - Escape HTML to help prevent XSS attacks. It has no optional
   *   parameters.
   *
   * @example
   *   // Column definition using the number renderer
   *   {
   *     data: "salary",
   *     render: $.fn.dataTable.render.number( '\'', '.', 0, '$' )
   *   }
   *
   * @namespace
   */
  DataTable.render = {
    date: __mlHelper("toLocaleDateString"),
    datetime: __mlHelper("toLocaleString"),
    time: __mlHelper("toLocaleTimeString"),
    number: function (thousands, decimal, precision, prefix, postfix) {
      // Auto locale detection
      if (thousands === null || thousands === undefined) {
        thousands = __thousands;
      }

      if (decimal === null || decimal === undefined) {
        decimal = __decimal;
      }

      return {
        display: function (d) {
          if (typeof d !== "number" && typeof d !== "string") {
            return d;
          }

          if (d === "" || d === null) {
            return d;
          }

          var negative = d < 0 ? "-" : "";
          var flo = parseFloat(d);
          var abs = Math.abs(flo);

          // Scientific notation for large and small numbers
          if (abs >= 100000000000 || (abs < 0.0001 && abs !== 0)) {
            var exp = flo.toExponential(precision).split(/e\+?/);
            return exp[0] + " x 10<sup>" + exp[1] + "</sup>";
          }

          // If NaN then there isn't much formatting that we can do - just
          // return immediately, escaping any HTML (this was supposed to
          // be a number after all)
          if (isNaN(flo)) {
            return _escapeHtml(d);
          }

          flo = flo.toFixed(precision);
          d = Math.abs(flo);

          var intPart = parseInt(d, 10);
          var floatPart = precision ? decimal + (d - intPart).toFixed(precision).substring(2) : "";

          // If zero, then can't have a negative prefix
          if (intPart === 0 && parseFloat(floatPart) === 0) {
            negative = "";
          }

          return negative + (prefix || "") + intPart.toString().replace(/\B(?=(\d{3})+(?!\d))/g, thousands) + floatPart + (postfix || "");
        },
      };
    },

    text: function () {
      return {
        display: _escapeHtml,
        filter: _escapeHtml,
      };
    },
  };

  var _extTypes = DataTable.ext.type;

  // Get / set type
  DataTable.type = function (name, prop, val) {
    if (!prop) {
      return {
        className: _extTypes.className[name],
        detect: _extTypes.detect.find(function (fn) {
          return fn.name === name;
        }),
        order: {
          pre: _extTypes.order[name + "-pre"],
          asc: _extTypes.order[name + "-asc"],
          desc: _extTypes.order[name + "-desc"],
        },
        render: _extTypes.render[name],
        search: _extTypes.search[name],
      };
    }

    var setProp = function (prop, propVal) {
      _extTypes[prop][name] = propVal;
    };
    var setDetect = function (fn) {
      // Wrap to allow the function to return `true` rather than
      // specifying the type name.
      var cb = function (d, s) {
        var ret = fn(d, s);

        return ret === true ? name : ret;
      };
      Object.defineProperty(cb, "name", { value: name });

      var idx = _extTypes.detect.findIndex(function (fn) {
        return fn.name === name;
      });

      if (idx === -1) {
        _extTypes.detect.unshift(cb);
      } else {
        _extTypes.detect.splice(idx, 1, cb);
      }
    };
    var setOrder = function (obj) {
      _extTypes.order[name + "-pre"] = obj.pre; // can be undefined
      _extTypes.order[name + "-asc"] = obj.asc; // can be undefined
      _extTypes.order[name + "-desc"] = obj.desc; // can be undefined
    };

    // prop is optional
    if (!val) {
      val = prop;
      prop = null;
    }

    if (prop === "className") {
      setProp("className", val);
    } else if (prop === "detect") {
      setDetect(val);
    } else if (prop === "order") {
      setOrder(val);
    } else if (prop === "render") {
      setProp("render", val);
    } else if (prop === "search") {
      setProp("search", val);
    } else if (!prop) {
      if (val.className) {
        setProp("className", val.className);
      }

      if (val.detect !== undefined) {
        setDetect(val.detect);
      }

      if (val.order) {
        setOrder(val.order);
      }

      if (val.render !== undefined) {
        setProp("render", val.render);
      }

      if (val.search !== undefined) {
        setProp("search", val.search);
      }
    }
  };

  // Get a list of types
  DataTable.types = function () {
    return _extTypes.detect.map(function (fn) {
      return fn.name;
    });
  };

  //
  // Built in data types
  //

  DataTable.type("string", {
    detect: function () {
      return "string";
    },
    order: {
      pre: function (a) {
        // This is a little complex, but faster than always calling toString,
        // http://jsperf.com/tostring-v-check
        return _empty(a) ? "" : typeof a === "string" ? a.toLowerCase() : !a.toString ? "" : a.toString();
      },
    },
    search: _filterString(false, true),
  });

  DataTable.type("html", {
    detect: function (d) {
      return _empty(d) || (typeof d === "string" && d.indexOf("<") !== -1) ? "html" : null;
    },
    order: {
      pre: function (a) {
        return _empty(a) ? "" : a.replace ? _stripHtml(a).trim().toLowerCase() : a + "";
      },
    },
    search: _filterString(true, true),
  });

  DataTable.type("date", {
    className: "dt-type-date",
    detect: function (d) {
      // V8 tries _very_ hard to make a string passed into `Date.parse()`
      // valid, so we need to use a regex to restrict date formats. Use a
      // plug-in for anything other than ISO8601 style strings
      if (d && !(d instanceof Date) && !_re_date.test(d)) {
        return null;
      }
      var parsed = Date.parse(d);
      return (parsed !== null && !isNaN(parsed)) || _empty(d) ? "date" : null;
    },
    order: {
      pre: function (d) {
        var ts = Date.parse(d);
        return isNaN(ts) ? -Infinity : ts;
      },
    },
  });

  DataTable.type("html-num-fmt", {
    className: "dt-type-numeric",
    detect: function (d, settings) {
      var decimal = settings.oLanguage.sDecimal;
      return _htmlNumeric(d, decimal, true) ? "html-num-fmt" : null;
    },
    order: {
      pre: function (d, s) {
        var dp = s.oLanguage.sDecimal;
        return __numericReplace(d, dp, _re_html, _re_formatted_numeric);
      },
    },
    search: _filterString(true, true),
  });

  DataTable.type("html-num", {
    className: "dt-type-numeric",
    detect: function (d, settings) {
      var decimal = settings.oLanguage.sDecimal;
      return _htmlNumeric(d, decimal) ? "html-num" : null;
    },
    order: {
      pre: function (d, s) {
        var dp = s.oLanguage.sDecimal;
        return __numericReplace(d, dp, _re_html);
      },
    },
    search: _filterString(true, true),
  });

  DataTable.type("num-fmt", {
    className: "dt-type-numeric",
    detect: function (d, settings) {
      var decimal = settings.oLanguage.sDecimal;
      return _isNumber(d, decimal, true) ? "num-fmt" : null;
    },
    order: {
      pre: function (d, s) {
        var dp = s.oLanguage.sDecimal;
        return __numericReplace(d, dp, _re_formatted_numeric);
      },
    },
  });

  DataTable.type("num", {
    className: "dt-type-numeric",
    detect: function (d, settings) {
      var decimal = settings.oLanguage.sDecimal;
      return _isNumber(d, decimal) ? "num" : null;
    },
    order: {
      pre: function (d, s) {
        var dp = s.oLanguage.sDecimal;
        return __numericReplace(d, dp);
      },
    },
  });

  var __numericReplace = function (d, decimalPlace, re1, re2) {
    if (d !== 0 && (!d || d === "-")) {
      return -Infinity;
    }

    var type = typeof d;

    if (type === "number" || type === "bigint") {
      return d;
    }

    // If a decimal place other than `.` is used, it needs to be given to the
    // function so we can detect it and replace with a `.` which is the only
    // decimal place Javascript recognises - it is not locale aware.
    if (decimalPlace) {
      d = _numToDecimal(d, decimalPlace);
    }

    if (d.replace) {
      if (re1) {
        d = d.replace(re1, "");
      }

      if (re2) {
        d = d.replace(re2, "");
      }
    }

    return d * 1;
  };

  $.extend(true, DataTable.ext.renderer, {
    footer: {
      _: function (settings, cell, classes) {
        cell.addClass(classes.tfoot.cell);
      },
    },

    header: {
      _: function (settings, cell, classes) {
        cell.addClass(classes.thead.cell);

        if (!settings.oFeatures.bSort) {
          cell.addClass(classes.order.none);
        }

        var legacyTop = settings.bSortCellsTop;
        var headerRows = cell.closest("thead").find("tr");
        var rowIdx = cell.parent().index();

        // Conditions to not apply the ordering icons
        if (
          // Cells and rows which have the attribute to disable the icons
          cell.attr("data-dt-order") === "disable" ||
          cell.parent().attr("data-dt-order") === "disable" ||
          // Legacy support for `orderCellsTop`. If it is set, then cells
          // which are not in the top or bottom row of the header (depending
          // on the value) do not get the sorting classes applied to them
          (legacyTop === true && rowIdx !== 0) ||
          (legacyTop === false && rowIdx !== headerRows.length - 1)
        ) {
          return;
        }

        // No additional mark-up required
        // Attach a sort listener to update on sort - note that using the
        // `DT` namespace will allow the event to be removed automatically
        // on destroy, while the `dt` namespaced event is the one we are
        // listening for
        $(settings.nTable).on("order.dt.DT", function (e, ctx, sorting) {
          if (settings !== ctx) {
            // need to check this this is the host
            return; // table, not a nested one
          }

          var orderClasses = classes.order;
          var columns = ctx.api.columns(cell);
          var col = settings.aoColumns[columns.flatten()[0]];
          var orderable = columns.orderable().includes(true);
          var ariaType = "";
          var indexes = columns.indexes();
          var sortDirs = columns.orderable(true).flatten();
          var orderedColumns = sorting
            .map(function (val) {
              return val.col;
            })
            .join(",");

          cell
            .removeClass(orderClasses.isAsc + " " + orderClasses.isDesc)
            .toggleClass(orderClasses.none, !orderable)
            .toggleClass(orderClasses.canAsc, orderable && sortDirs.includes("asc"))
            .toggleClass(orderClasses.canDesc, orderable && sortDirs.includes("desc"));

          var sortIdx = orderedColumns.indexOf(indexes.toArray().join(","));

          if (sortIdx !== -1) {
            // Get the ordering direction for the columns under this cell
            // Note that it is possible for a cell to be asc and desc sorting
            // (column spanning cells)
            var orderDirs = columns.order();

            cell.addClass(orderDirs.includes("asc") ? orderClasses.isAsc : "" + orderDirs.includes("desc") ? orderClasses.isDesc : "");
          }

          // The ARIA spec says that only one column should be marked with aria-sort
          if (sortIdx === 0 && orderedColumns.length === indexes.count()) {
            var firstSort = sorting[0];
            var sortOrder = col.asSorting;

            cell.attr("aria-sort", firstSort.dir === "asc" ? "ascending" : "descending");

            // Determine if the next click will remove sorting or change the sort
            ariaType = !sortOrder[firstSort.index + 1] ? "Remove" : "Reverse";
          } else {
            cell.removeAttr("aria-sort");
          }

          cell.attr("aria-label", orderable ? col.ariaTitle + ctx.api.i18n("oAria.orderable" + ariaType) : col.ariaTitle);

          if (orderable) {
            cell.find(".dt-column-title").attr("role", "button");
            cell.attr("tabindex", 0);
          }
        });
      },
    },

    layout: {
      _: function (settings, container, items) {
        var row = $("<div/>").addClass("dt-layout-row").appendTo(container);

        $.each(items, function (key, val) {
          var klass = !val.table ? "dt-" + key + " " : "";

          if (val.table) {
            row.addClass("dt-layout-table");
          }

          $("<div/>")
            .attr({
              id: val.id || null,
              class: "dt-layout-cell " + klass + (val.className || ""),
            })
            .append(val.contents)
            .appendTo(row);
        });
      },
    },
  });

  DataTable.feature = {};

  // Third parameter is internal only!
  DataTable.feature.register = function (name, cb, legacy) {
    DataTable.ext.features[name] = cb;

    if (legacy) {
      _ext.feature.push({
        cFeature: legacy,
        fnInit: cb,
      });
    }
  };

  DataTable.feature.register(
    "info",
    function (settings, opts) {
      // For compatibility with the legacy `info` top level option
      if (!settings.oFeatures.bInfo) {
        return null;
      }

      var lang = settings.oLanguage,
        tid = settings.sTableId,
        n = $("<div/>", {
          class: settings.oClasses.info.container,
        });

      opts = $.extend(
        {
          callback: lang.fnInfoCallback,
          empty: lang.sInfoEmpty,
          postfix: lang.sInfoPostFix,
          search: lang.sInfoFiltered,
          text: lang.sInfo,
        },
        opts
      );

      // Update display on each draw
      settings.aoDrawCallback.push(function (s) {
        _fnUpdateInfo(s, opts, n);
      });

      // For the first info display in the table, we add a callback and aria information.
      if (!$("#" + tid + "_info", settings.nWrapper).length) {
        n.attr({
          "aria-live": "polite",
          id: tid + "_info",
          role: "status",
        });

        // Table is described by our info div
        $(settings.nTable).attr("aria-describedby", tid + "_info");
      }

      return n;
    },
    "i"
  );

  /**
   * Update the information elements in the display
   *  @param {object} settings dataTables settings object
   *  @memberof DataTable#oApi
   */
  function _fnUpdateInfo(settings, opts, node) {
    var start = settings._iDisplayStart + 1,
      end = settings.fnDisplayEnd(),
      max = settings.fnRecordsTotal(),
      total = settings.fnRecordsDisplay(),
      out = total ? opts.text : opts.empty;

    if (total !== max) {
      // Record set after filtering
      out += " " + opts.search;
    }

    // Convert the macros
    out += opts.postfix;
    out = _fnMacros(settings, out);

    if (opts.callback) {
      out = opts.callback.call(settings.oInstance, settings, start, end, max, total, out);
    }

    node.html(out);

    _fnCallbackFire(settings, null, "info", [settings, node[0], out]);
  }

  var __searchCounter = 0;

  // opts
  // - text
  // - placeholder
  DataTable.feature.register(
    "search",
    function (settings, opts) {
      // Don't show the input if filtering isn't available on the table
      if (!settings.oFeatures.bFilter) {
        return null;
      }

      var classes = settings.oClasses.search;
      var tableId = settings.sTableId;
      var language = settings.oLanguage;
      var previousSearch = settings.oPreviousSearch;
      var input = '<input type="search" class="' + classes.input + '"/>';

      opts = $.extend(
        {
          placeholder: language.sSearchPlaceholder,
          text: language.sSearch,
        },
        opts
      );

      // The _INPUT_ is optional - is appended if not present
      if (opts.text.indexOf("_INPUT_") === -1) {
        opts.text += "_INPUT_";
      }

      opts.text = _fnMacros(settings, opts.text);

      // We can put the <input> outside of the label if it is at the start or end
      // which helps improve accessability (not all screen readers like implicit
      // for elements).
      var end = opts.text.match(/_INPUT_$/);
      var start = opts.text.match(/^_INPUT_/);
      var removed = opts.text.replace(/_INPUT_/, "");
      var str = "<label>" + opts.text + "</label>";

      if (start) {
        str = "_INPUT_<label>" + removed + "</label>";
      } else if (end) {
        str = "<label>" + removed + "</label>_INPUT_";
      }

      var filter = $("<div>")
        .addClass(classes.container)
        .append(str.replace(/_INPUT_/, input));

      // add for and id to label and input
      filter.find("label").attr("for", "dt-search-" + __searchCounter);
      filter.find("input").attr("id", "dt-search-" + __searchCounter);
      __searchCounter++;

      var searchFn = function (event) {
        var val = this.value;

        if (previousSearch.return && event.key !== "Enter") {
          return;
        }

        /* Now do the filter */
        if (val != previousSearch.search) {
          previousSearch.search = val;

          _fnFilterComplete(settings, previousSearch);

          // Need to redraw, without resorting
          settings._iDisplayStart = 0;
          _fnDraw(settings);
        }
      };

      var searchDelay = settings.searchDelay !== null ? settings.searchDelay : 0;

      var jqFilter = $("input", filter)
        .val(previousSearch.search)
        .attr("placeholder", opts.placeholder)
        .on("keyup.DT search.DT input.DT paste.DT cut.DT", searchDelay ? DataTable.util.debounce(searchFn, searchDelay) : searchFn)
        .on("mouseup.DT", function (e) {
          // Edge fix! Edge 17 does not trigger anything other than mouse events when clicking
          // on the clear icon (Edge bug 17584515). This is safe in other browsers as `searchFn`
          // checks the value to see if it has changed. In other browsers it won't have.
          setTimeout(function () {
            searchFn.call(jqFilter[0], e);
          }, 10);
        })
        .on("keypress.DT", function (e) {
          /* Prevent form submission */
          if (e.keyCode == 13) {
            return false;
          }
        })
        .attr("aria-controls", tableId);

      // Update the input elements whenever the table is filtered
      $(settings.nTable).on("search.dt.DT", function (ev, s) {
        if (settings === s && jqFilter[0] !== document.activeElement) {
          jqFilter.val(typeof previousSearch.search !== "function" ? previousSearch.search : "");
        }
      });

      return filter;
    },
    "f"
  );

  // opts
  // - type - button configuration
  // - numbers - number of buttons to show - must be odd
  DataTable.feature.register(
    "paging",
    function (settings, opts) {
      // Don't show the paging input if the table doesn't have paging enabled
      if (!settings.oFeatures.bPaginate) {
        return null;
      }

      opts = $.extend(
        {
          numbers: DataTable.ext.pager.numbers_length,
          type: settings.sPaginationType,
        },
        opts
      );

      var host = $("<div/>").addClass(settings.oClasses.paging.container + " paging_" + opts.type);
      var draw = function () {
        _pagingDraw(settings, host, opts);
      };

      settings.aoDrawCallback.push(draw);

      // Responsive redraw of paging control
      $(settings.nTable).on("column-sizing.dt.DT", draw);

      return host;
    },
    "p"
  );

  function _pagingDraw(settings, host, opts) {
    if (!settings._bInitComplete) {
      return;
    }

    var plugin = DataTable.ext.pager[opts.type],
      aria = settings.oLanguage.oAria.paginate || {},
      start = settings._iDisplayStart,
      len = settings._iDisplayLength,
      visRecords = settings.fnRecordsDisplay(),
      all = len === -1,
      page = all ? 0 : Math.ceil(start / len),
      pages = all ? 1 : Math.ceil(visRecords / len),
      buttons = plugin()
        .map(function (val) {
          return val === "numbers" ? _pagingNumbers(page, pages, opts.numbers) : val;
        })
        .flat();

    var buttonEls = [];

    for (var i = 0; i < buttons.length; i++) {
      var button = buttons[i];

      var btnInfo = _pagingButtonInfo(settings, button, page, pages);
      var btn = _fnRenderer(settings, "pagingButton")(settings, button, btnInfo.display, btnInfo.active, btnInfo.disabled);

      // Common attributes
      $(btn.clicker).attr({
        "aria-controls": settings.sTableId,
        "aria-disabled": btnInfo.disabled ? "true" : null,
        "aria-current": btnInfo.active ? "page" : null,
        "aria-label": aria[button],
        "data-dt-idx": button,
        tabIndex: btnInfo.disabled ? -1 : settings.iTabIndex,
      });

      if (typeof button !== "number") {
        $(btn.clicker).addClass(button);
      }

      _fnBindAction(btn.clicker, { action: button }, function (e) {
        e.preventDefault();

        _fnPageChange(settings, e.data.action, true);
      });

      buttonEls.push(btn.display);
    }

    var wrapped = _fnRenderer(settings, "pagingContainer")(settings, buttonEls);

    var activeEl = host.find(document.activeElement).data("dt-idx");

    host.empty().append(wrapped);

    if (activeEl !== undefined) {
      host.find("[data-dt-idx=" + activeEl + "]").trigger("focus");
    }

    // Responsive - check if the buttons are over two lines based on the
    // height of the buttons and the container.
    if (
      buttonEls.length && // any buttons
      opts.numbers > 1 && // prevent infinite
      $(host).outerHeight() >= $(buttonEls[0]).outerHeight() * 2 - 10
    ) {
      _pagingDraw(settings, host, $.extend({}, opts, { numbers: opts.numbers - 2 }));
    }
  }

  /**
   * Get properties for a button based on the current paging state of the table
   *
   * @param {*} settings DT settings object
   * @param {*} button The button type in question
   * @param {*} page Table's current page
   * @param {*} pages Number of pages
   * @returns Info object
   */
  function _pagingButtonInfo(settings, button, page, pages) {
    var lang = settings.oLanguage.oPaginate;
    var o = {
      display: "",
      active: false,
      disabled: false,
    };

    switch (button) {
      case "ellipsis":
        o.display = "&#x2026;";
        o.disabled = true;
        break;

      case "first":
        o.display = lang.sFirst;

        if (page === 0) {
          o.disabled = true;
        }
        break;

      case "previous":
        o.display = lang.sPrevious;

        if (page === 0) {
          o.disabled = true;
        }
        break;

      case "next":
        o.display = lang.sNext;

        if (pages === 0 || page === pages - 1) {
          o.disabled = true;
        }
        break;

      case "last":
        o.display = lang.sLast;

        if (pages === 0 || page === pages - 1) {
          o.disabled = true;
        }
        break;

      default:
        if (typeof button === "number") {
          o.display = settings.fnFormatNumber(button + 1);

          if (page === button) {
            o.active = true;
          }
        }
        break;
    }

    return o;
  }

  /**
   * Compute what number buttons to show in the paging control
   *
   * @param {*} page Current page
   * @param {*} pages Total number of pages
   * @param {*} buttons Target number of number buttons
   * @returns Buttons to show
   */
  function _pagingNumbers(page, pages, buttons) {
    var numbers = [],
      half = Math.floor(buttons / 2);

    if (pages <= buttons) {
      numbers = _range(0, pages);
    } else if (buttons === 1) {
      // Single button - current page only
      numbers = [page];
    } else if (buttons === 3) {
      // Special logic for just three buttons
      if (page <= 1) {
        numbers = [0, 1, "ellipsis"];
      } else if (page >= pages - 2) {
        numbers = _range(pages - 2, pages);
        numbers.unshift("ellipsis");
      } else {
        numbers = ["ellipsis", page, "ellipsis"];
      }
    } else if (page <= half) {
      numbers = _range(0, buttons - 2);
      numbers.push("ellipsis", pages - 1);
    } else if (page >= pages - 1 - half) {
      numbers = _range(pages - (buttons - 2), pages);
      numbers.unshift(0, "ellipsis");
    } else {
      numbers = _range(page - half + 2, page + half - 1);
      numbers.push("ellipsis", pages - 1);
      numbers.unshift(0, "ellipsis");
    }

    return numbers;
  }

  var __lengthCounter = 0;

  // opts
  // - menu
  // - text
  DataTable.feature.register(
    "pageLength",
    function (settings, opts) {
      var features = settings.oFeatures;

      // For compatibility with the legacy `pageLength` top level option
      if (!features.bPaginate || !features.bLengthChange) {
        return null;
      }

      opts = $.extend(
        {
          menu: settings.aLengthMenu,
          text: settings.oLanguage.sLengthMenu,
        },
        opts
      );

      var classes = settings.oClasses.length,
        tableId = settings.sTableId,
        menu = opts.menu,
        lengths = [],
        language = [],
        i;

      // Options can be given in a number of ways
      if (Array.isArray(menu[0])) {
        // Old 1.x style - 2D array
        lengths = menu[0];
        language = menu[1];
      } else {
        for (i = 0; i < menu.length; i++) {
          // An object with different label and value
          if ($.isPlainObject(menu[i])) {
            lengths.push(menu[i].value);
            language.push(menu[i].label);
          } else {
            // Or just a number to display and use
            lengths.push(menu[i]);
            language.push(menu[i]);
          }
        }
      }

      // We can put the <select> outside of the label if it is at the start or
      // end which helps improve accessability (not all screen readers like
      // implicit for elements).
      var end = opts.text.match(/_MENU_$/);
      var start = opts.text.match(/^_MENU_/);
      var removed = opts.text.replace(/_MENU_/, "");
      var str = "<label>" + opts.text + "</label>";

      if (start) {
        str = "_MENU_<label>" + removed + "</label>";
      } else if (end) {
        str = "<label>" + removed + "</label>_MENU_";
      }

      // Wrapper element - use a span as a holder for where the select will go
      var div = $("<div/>").addClass(classes.container).append(str.replace("_MENU_", "<span></span>"));

      // Save text node content for macro updating
      var textNodes = [];
      div.find("label")[0].childNodes.forEach(function (el) {
        if (el.nodeType === Node.TEXT_NODE) {
          textNodes.push({
            el: el,
            text: el.textContent,
          });
        }
      });

      // Update the label text in case it has an entries value
      var updateEntries = function (len) {
        textNodes.forEach(function (node) {
          node.el.textContent = _fnMacros(settings, node.text, len);
        });
      };

      // Next, the select itself, along with the options
      var select = $("<select/>", {
        name: tableId + "_length",
        "aria-controls": tableId,
        class: classes.select,
      });

      for (i = 0; i < lengths.length; i++) {
        select[0][i] = new Option(typeof language[i] === "number" ? settings.fnFormatNumber(language[i]) : language[i], lengths[i]);
      }

      // add for and id to label and input
      div.find("label").attr("for", "dt-length-" + __lengthCounter);
      select.attr("id", "dt-length-" + __lengthCounter);
      __lengthCounter++;

      // Swap in the select list
      div.find("span").replaceWith(select);

      // Can't use `select` variable as user might provide their own and the
      // reference is broken by the use of outerHTML
      $("select", div)
        .val(settings._iDisplayLength)
        .on("change.DT", function () {
          _fnLengthChange(settings, $(this).val());
          _fnDraw(settings);
        });

      // Update node value whenever anything changes the table's length
      $(settings.nTable).on("length.dt.DT", function (e, s, len) {
        if (settings === s) {
          $("select", div).val(len);

          // Resolve plurals in the text for the new length
          updateEntries(len);
        }
      });

      updateEntries(settings._iDisplayLength);

      return div;
    },
    "l"
  );

  // jQuery access
  $.fn.dataTable = DataTable;

  // Provide access to the host jQuery object (circular reference)
  DataTable.$ = $;

  // Legacy aliases
  $.fn.dataTableSettings = DataTable.settings;
  $.fn.dataTableExt = DataTable.ext;

  // With a capital `D` we return a DataTables API instance rather than a
  // jQuery object
  $.fn.DataTable = function (opts) {
    return $(this).dataTable(opts).api();
  };

  // All properties that are available to $.fn.dataTable should also be
  // available on $.fn.DataTable
  $.each(DataTable, function (prop, val) {
    $.fn.DataTable[prop] = val;
  });

  return DataTable;
});
