/**
 * @license
 * File:        ColReorderWithResize.js
 * Version:     3.0
 * CVS:         $Id$
 * Description: Allow columns to be reordered in a DataTable
 * Author:      Allan Jardine (www.sprymedia.co.uk)
 * Author:      Christophe Battarel (www.altairis.fr)
 * Created:     Wed Sep 15 18:23:29 BST 2010
 * Modified:    July 2011 by Christophe Battarel - christophe.battarel@altairis.fr (columns resizable)
 * Modified:    February 2012 by Martin Marchetta - martin.marchetta@gmail.com
 *  1. Made the "hot area" for resizing a little wider (it was a little difficult to hit the exact border of a column for resizing)
 *  2. Resizing didn't work at all when using scroller (that plugin splits the table into 2 different tables: one for the header and another one for the body, so when you resized the header, the data columns didn't follow)
 *  3. Fixed collateral effects of sorting feature
 *  4. If sScrollX is enabled (i.e. horizontal scrolling), when resizing a column the width of the other columns is not changed, but the whole
 *     table is resized to give an Excel-like behavior (good suggestion by Allan)
 * Modified:    February 2012 by Christophe Battarel - christophe.battarel@altairis.fr (ColReorder v1.0.5 adaptation)
 * Modified:    September 16th 2012 by Hassan Kamara - h@phrmc.com
 * Modified:    June 2017 by Jeff Walter - jeffreydwalter@gmail.com
 *  1. ColReorder v1.3.3 adaptation.
 *  2. Fixed issues with column width calculations which allowed column headers to become misaligned with table body when using scroller plugin.
 * Modified:    June 2018 by Jeff Walter - jeffreydwalter@gmail.com
 *  1. Took a second stab at this plugin. Made things work for both scroller and non-scroller tables.
 * Language:    Javascript
 * License:     MIT
 * Project:     DataTables
 *
 */

 (function( factory ){
    if ( typeof define === 'function' && define.amd ) {
        // AMD
        define( ['jquery', 'datatables.net'], function ( $ ) {
            return factory( $, window, document );
        } );
    }
    else if ( typeof exports === 'object' ) {
        // CommonJS
        module.exports = function (root, $) {
            if ( ! root ) {
                root = window;
            }

            if ( ! $ || ! $.fn.dataTable ) {
                $ = require('datatables.net')(root, $).$;
            }

            return factory( $, root, root.document );
        };
    }
    else {
        // Browser
        factory( jQuery, window, document );
    }
}(function( $, window, document, undefined ) {
'use strict';
var DataTable = $.fn.dataTable;



/**
 * Switch the key value pairing of an index array to be value key (i.e. the old value is now the
 * key). For example consider [ 2, 0, 1 ] this would be returned as [ 1, 2, 0 ].
 *  @method  fnInvertKeyValues
 *  @param   array aIn Array to switch around
 *  @returns array
 */
function fnInvertKeyValues( aIn )
{
    var aRet=[];
    for ( var i=0, iLen=aIn.length ; i<iLen ; i++ )
    {
        aRet[ aIn[i] ] = i;
    }
    return aRet;
}

/**
 * Modify an array by switching the position of two elements
 *  @method  fnArraySwitch
 *  @param   array aArray Array to consider, will be modified by reference (i.e. no return)
 *  @param   int iFrom From point
 *  @param   int iTo Insert point
 *  @returns void
 */
function fnArraySwitch( aArray, iFrom, iTo )
{
    var mStore = aArray.splice( iFrom, 1 )[0];
    aArray.splice( iTo, 0, mStore );
}

/**
 * Switch the positions of nodes in a parent node (note this is specifically designed for
 * table rows). Note this function considers all element nodes under the parent!
 *  @method  fnDomSwitch
 *  @param   string sTag Tag to consider
 *  @param   int iFrom Element to move
 *  @param   int Point to element the element to (before this point), can be null for append
 *  @returns void
 */
function fnDomSwitch( nParent, iFrom, iTo )
{
    var anTags = [];
    for ( var i=0, iLen=nParent.childNodes.length ; i<iLen ; i++ )
    {
        if ( nParent.childNodes[i].nodeType == 1 )
        {
            anTags.push( nParent.childNodes[i] );
        }
    }
    var nStore = anTags[ iFrom ];

    if ( iTo !== null )
    {
        nParent.insertBefore( nStore, anTags[iTo] );
    }
    else
    {
        nParent.appendChild( nStore );
    }
}

/**
 * Plug-in for DataTables which will reorder the internal column structure by taking the column
 * from one position (iFrom) and insert it into a given point (iTo).
 *  @method  $.fn.dataTableExt.oApi.fnColReorder
 *  @param   object oSettings DataTables settings object - automatically added by DataTables!
 *  @param   int iFrom Take the column to be repositioned from this point
 *  @param   int iTo and insert it into this point
 *  @param   bool drop Indicate if the reorder is the final one (i.e. a drop)
 *    not a live reorder
 *  @param   bool invalidateRows speeds up processing if false passed
 *  @returns void
 */
$.fn.dataTableExt.oApi.fnColReorder = function ( oSettings, iFrom, iTo, drop, invalidateRows )
{
    var i, iLen, j, jLen, jen, iCols=oSettings.aoColumns.length, nTrs, oCol;
    var attrMap = function ( obj, prop, mapping ) {
        if ( ! obj[ prop ] || typeof obj[ prop ] === 'function' ) {
            return;
        }

        var a = obj[ prop ].split('.');
        var num = a.shift();

        if ( isNaN( num*1 ) ) {
            return;
        }

        obj[ prop ] = mapping[ num*1 ]+'.'+a.join('.');
    };

    /* Sanity check in the input */
    if ( iFrom == iTo )
    {
        /* Pointless reorder */
        return;
    }

    if ( iFrom < 0 || iFrom >= iCols )
    {
        this.oApi._fnLog( oSettings, 1, "ColReorder 'from' index is out of bounds: "+iFrom );
        return;
    }

    if ( iTo < 0 || iTo >= iCols )
    {
        this.oApi._fnLog( oSettings, 1, "ColReorder 'to' index is out of bounds: "+iTo );
        return;
    }

    /*
     * Calculate the new column array index, so we have a mapping between the old and new
     */
    var aiMapping = [];
    for ( i=0, iLen=iCols ; i<iLen ; i++ )
    {
        aiMapping[i] = i;
    }
    fnArraySwitch( aiMapping, iFrom, iTo );
    var aiInvertMapping = fnInvertKeyValues( aiMapping );


    /*
     * Convert all internal indexing to the new column order indexes
     */
    /* Sorting */
    for ( i=0, iLen=oSettings.aaSorting.length ; i<iLen ; i++ )
    {
        oSettings.aaSorting[i][0] = aiInvertMapping[ oSettings.aaSorting[i][0] ];
    }

    /* Fixed sorting */
    if ( oSettings.aaSortingFixed !== null )
    {
        for ( i=0, iLen=oSettings.aaSortingFixed.length ; i<iLen ; i++ )
        {
            oSettings.aaSortingFixed[i][0] = aiInvertMapping[ oSettings.aaSortingFixed[i][0] ];
        }
    }

    /* Data column sorting (the column which the sort for a given column should take place on) */
    for ( i=0, iLen=iCols ; i<iLen ; i++ )
    {
        oCol = oSettings.aoColumns[i];
        for ( j=0, jLen=oCol.aDataSort.length ; j<jLen ; j++ )
        {
            oCol.aDataSort[j] = aiInvertMapping[ oCol.aDataSort[j] ];
        }

        // Update the column indexes
        oCol.idx = aiInvertMapping[ oCol.idx ];
    }

    // Update 1.10 optimised sort class removal variable
    $.each( oSettings.aLastSort, function (i, val) {
        oSettings.aLastSort[i].src = aiInvertMapping[ val.src ];
    } );

    /* Update the Get and Set functions for each column */
    for ( i=0, iLen=iCols ; i<iLen ; i++ )
    {
        oCol = oSettings.aoColumns[i];

        if ( typeof oCol.mData == 'number' ) {
            oCol.mData = aiInvertMapping[ oCol.mData ];
        }
        else if ( $.isPlainObject( oCol.mData ) ) {
            // HTML5 data sourced
            attrMap( oCol.mData, '_',      aiInvertMapping );
            attrMap( oCol.mData, 'filter', aiInvertMapping );
            attrMap( oCol.mData, 'sort',   aiInvertMapping );
            attrMap( oCol.mData, 'type',   aiInvertMapping );
        }
    }

    /*
     * Move the DOM elements
     */
    if ( oSettings.aoColumns[iFrom].bVisible )
    {
        /* Calculate the current visible index and the point to insert the node before. The insert
         * before needs to take into account that there might not be an element to insert before,
         * in which case it will be null, and an appendChild should be used
         */
        var iVisibleIndex = this.oApi._fnColumnIndexToVisible( oSettings, iFrom );
        var iInsertBeforeIndex = null;

        i = iTo < iFrom ? iTo : iTo + 1;
        while ( iInsertBeforeIndex === null && i < iCols )
        {
            iInsertBeforeIndex = this.oApi._fnColumnIndexToVisible( oSettings, i );
            i++;
        }

        /* Header */
        nTrs = oSettings.nTHead.getElementsByTagName('tr');
        for ( i=0, iLen=nTrs.length ; i<iLen ; i++ )
        {
            fnDomSwitch( nTrs[i], iVisibleIndex, iInsertBeforeIndex );
        }

        /* Footer */
        if ( oSettings.nTFoot !== null )
        {
            nTrs = oSettings.nTFoot.getElementsByTagName('tr');
            for ( i=0, iLen=nTrs.length ; i<iLen ; i++ )
            {
                fnDomSwitch( nTrs[i], iVisibleIndex, iInsertBeforeIndex );
            }
        }

        /* Body */
        for ( i=0, iLen=oSettings.aoData.length ; i<iLen ; i++ )
        {
            if ( oSettings.aoData[i].nTr !== null )
            {
                fnDomSwitch( oSettings.aoData[i].nTr, iVisibleIndex, iInsertBeforeIndex );
            }
        }
    }

    /*
     * Move the internal array elements
     */
    /* Columns */
    fnArraySwitch( oSettings.aoColumns, iFrom, iTo );

    // regenerate the get / set functions
    for ( i=0, iLen=iCols ; i<iLen ; i++ ) {
        oSettings.oApi._fnColumnOptions( oSettings, i, {} );
    }

    /* Search columns */
    fnArraySwitch( oSettings.aoPreSearchCols, iFrom, iTo );

    /* Array array - internal data anodes cache */
    for ( i=0, iLen=oSettings.aoData.length ; i<iLen ; i++ )
    {
        var data = oSettings.aoData[i];
        var cells = data.anCells;

        if ( cells ) {
            fnArraySwitch( cells, iFrom, iTo );

            // Longer term, should this be moved into the DataTables' invalidate
            // methods?
            for ( j=0, jen=cells.length ; j<jen ; j++ ) {
                if ( cells[j] && cells[j]._DT_CellIndex ) {
                    cells[j]._DT_CellIndex.column = j;
                }
            }
        }

        // For DOM sourced data, the invalidate will reread the cell into
        // the data array, but for data sources as an array, they need to
        // be flipped
        if ( data.src !== 'dom' && $.isArray( data._aData ) ) {
            fnArraySwitch( data._aData, iFrom, iTo );
        }
    }

    /* Reposition the header elements in the header layout array */
    for ( i=0, iLen=oSettings.aoHeader.length ; i<iLen ; i++ )
    {
        fnArraySwitch( oSettings.aoHeader[i], iFrom, iTo );
    }

    if ( oSettings.aoFooter !== null )
    {
        for ( i=0, iLen=oSettings.aoFooter.length ; i<iLen ; i++ )
        {
            fnArraySwitch( oSettings.aoFooter[i], iFrom, iTo );
        }
    }

    if ( invalidateRows || invalidateRows === undefined )
    {
        $.fn.dataTable.Api( oSettings ).rows().invalidate();
    }

    /*
     * Update DataTables' event handlers
     */

    /* Sort listener */
    for ( i=0, iLen=iCols ; i<iLen ; i++ )
    {
        $(oSettings.aoColumns[i].nTh).off('click.DT');
        this.oApi._fnSortAttachListener( oSettings, oSettings.aoColumns[i].nTh, i );
    }

    /* Fire an event so other plug-ins can update */
    $(oSettings.oInstance).trigger( 'column-reorder.dt', [ oSettings, {
        from: iFrom,
        to: iTo,
        mapping: aiInvertMapping,
        drop: drop,

        // Old style parameters for compatibility
        iFrom: iFrom,
        iTo: iTo,
        aiInvertMapping: aiInvertMapping
    } ] );
};

/**
 * ColReorder provides column visibility control for DataTables
 * @class ColReorder
 * @constructor
 * @param {object} dt DataTables settings object
 * @param {object} opts ColReorder options
 */
var ColReorder = function( dt, opts )
{
    var settings = new $.fn.dataTable.Api( dt ).settings()[0];

    // Ensure that we can't initialise on the same table twice
    if ( settings._colReorder ) {
        return settings._colReorder;
    }

    // Allow the options to be a boolean for defaults
    if ( opts === true ) {
        opts = {};
    }

    // Convert from camelCase to Hungarian, just as DataTables does
    var camelToHungarian = $.fn.dataTable.camelToHungarian;
    if ( camelToHungarian ) {
        camelToHungarian( ColReorder.defaults, ColReorder.defaults, true );
        camelToHungarian( ColReorder.defaults, opts || {} );
    }

    /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
     * Public class variables
     * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

    /**
     * @namespace Settings object which contains customisable information for ColReorder instance
     */
    this.s = {
        /**
         * DataTables settings object
         *  @property dt
         *  @type     Object
         *  @default  null
         */
        "dt": null,

        /**
         * Initialisation object used for this instance
         *  @property init
         *  @type     object
         *  @default  {}
         */
        "init": $.extend( true, {}, ColReorder.defaults, opts ),

        /**
         * Allow Reorder functionnality
         *  @property allowReorder
         *  @type     boolean
         *  @default  true
         */
        "allowReorder": true,

        /**
         * Allow Resize functionnality
         *  @property allowResize
         *  @type     boolean
         *  @default  true
         */
        "allowResize": true,

        /**
         * Number of columns to fix (not allow to be reordered)
         *  @property fixed
         *  @type     int
         *  @default  0
         */
        "fixed": 0,

        /**
         * Number of columns to fix counting from right (not allow to be reordered)
         *  @property fixedRight
         *  @type     int
         *  @default  0
         */
        "fixedRight": 0,

        /**
         * Callback function for once the reorder has been done
         *  @property reorderCallback
         *  @type     function
         *  @default  null
         */
        "reorderCallback": null,

        /**
         * Callback function for once the resize has been done
         *  @property resizeCallback
         *  @type     function
         *  @default  null
         */
        "resizeCallback": null,

        /**
         * @namespace Information used for the mouse drag
         */
        "mouse": {
            "startX": -1,
            "startY": -1,
            "offsetX": -1,
            "offsetY": -1,
            "target": -1,
            "targetIndex": -1,
            "fromIndex": -1
        },

        /**
         * Information which is used for positioning the insert cusor and knowing where to do the
         * insert. Array of objects with the properties:
         *   x: x-axis position
         *   to: insert point
         *  @property aoTargets
         *  @type     array
         *  @default  []
         */
        "aoTargets": []
    };


    /**
     * @namespace Common and useful DOM elements for the class instance
     */
    this.dom = {
        /**
         * Dragging element (the one the mouse is moving)
         *  @property drag
         *  @type     element
         *  @default  null
         */
        "drag": null,

        /**
         * Resizing a column
         *  @property drag
         *  @type     element
         *  @default  null
         */
        "resize": null,

        /**
         * The insert cursor
         *  @property pointer
         *  @type     element
         *  @default  null
         */
        "pointer": null
    };

    /* Constructor logic */
    this.s.dt = settings;

    // Keep the current table's size in order to resize it if columns are resized and scrollX is enabled.
    if(this.s.dt.oInit.sScrollX === undefined) {
        this.table_size = -1;
    }

    this.s.dt._colReorder = this;
    this._fnConstruct();

    return this;
};



$.extend( ColReorder.prototype, {
    /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
     * Public methods
     * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

    /**
     * Reset the column ordering to the original ordering that was detected on
     * start up.
     *  @return {this} Returns `this` for chaining.
     *
     *  @example
     *    // DataTables initialisation with ColReorder
     *    var table = $('#example').dataTable( {
     *        "sDom": 'Rlfrtip'
     *    } );
     *
     *    // Add click event to a button to reset the ordering
     *    $('#resetOrdering').click( function (e) {
     *        e.preventDefault();
     *        $.fn.dataTable.ColReorder( table ).fnReset();
     *    } );
     */
    "fnReset": function ()
    {
        this._fnOrderColumns( this.fnOrder() );

        return this;
    },

    /**
     * `Deprecated` - Get the current order of the columns, as an array.
     *  @return {array} Array of column identifiers
     *  @deprecated `fnOrder` should be used in preference to this method.
     *      `fnOrder` acts as a getter/setter.
     */
    "fnGetCurrentOrder": function ()
    {
        return this.fnOrder();
    },

    /**
     * Get the current order of the columns, as an array. Note that the values
     * given in the array are unique identifiers for each column. Currently
     * these are the original ordering of the columns that was detected on
     * start up, but this could potentially change in future.
     *  @return {array} Array of column identifiers
     *
     *  @example
     *    // Get column ordering for the table
     *    var order = $.fn.dataTable.ColReorder( dataTable ).fnOrder();
     *//**
     * Set the order of the columns, from the positions identified in the
     * ordering array given. Note that ColReorder takes a brute force approach
     * to reordering, so it is possible multiple reordering events will occur
     * before the final order is settled upon.
     *  @param {array} [set] Array of column identifiers in the new order. Note
     *    that every column must be included, uniquely, in this array.
     *  @return {this} Returns `this` for chaining.
     *
     *  @example
     *    // Swap the first and second columns
     *    $.fn.dataTable.ColReorder( dataTable ).fnOrder( [1, 0, 2, 3, 4] );
     *
     *  @example
     *    // Move the first column to the end for the table `#example`
     *    var curr = $.fn.dataTable.ColReorder( '#example' ).fnOrder();
     *    var first = curr.shift();
     *    curr.push( first );
     *    $.fn.dataTable.ColReorder( '#example' ).fnOrder( curr );
     *
     *  @example
     *    // Reverse the table's order
     *    $.fn.dataTable.ColReorder( '#example' ).fnOrder(
     *      $.fn.dataTable.ColReorder( '#example' ).fnOrder().reverse()
     *    );
     */
    "fnOrder": function ( set, original )
    {
        var a = [], i, ien, j, jen;
        var columns = this.s.dt.aoColumns;

        if ( set === undefined ){
            for ( i=0, ien=columns.length ; i<ien ; i++ ) {
                a.push( columns[i]._ColReorder_iOrigCol );
            }

            return a;
        }

        // The order given is based on the original indexes, rather than the
        // existing ones, so we need to translate from the original to current
        // before then doing the order
        if ( original ) {
            var order = this.fnOrder();

            for ( i=0, ien=set.length ; i<ien ; i++ ) {
                a.push( $.inArray( set[i], order ) );
            }

            set = a;
        }

        this._fnOrderColumns( fnInvertKeyValues( set ) );

        return this;
    },

    /**
     * Convert from the original column index, to the original
     *
     * @param  {int|array} idx Index(es) to convert
     * @param  {string} dir Transpose direction - `fromOriginal` / `toCurrent`
     *   or `'toOriginal` / `fromCurrent`
     * @return {int|array}     Converted values
     */
    fnTranspose: function ( idx, dir )
    {
        if ( ! dir ) {
            dir = 'toCurrent';
        }

        var order = this.fnOrder();
        var columns = this.s.dt.aoColumns;

        if ( dir === 'toCurrent' ) {
            // Given an original index, want the current
            return ! $.isArray( idx ) ?
                $.inArray( idx, order ) :
                $.map( idx, function ( index ) {
                    return $.inArray( index, order );
                } );
        }
        else {
            // Given a current index, want the original
            return ! $.isArray( idx ) ?
                columns[idx]._ColReorder_iOrigCol :
                $.map( idx, function ( index ) {
                    return columns[index]._ColReorder_iOrigCol;
                } );
        }
    },


    /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
     * Private methods (they are of course public in JS, but recommended as private)
     * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

    /**
     * Constructor logic
     *  @method  _fnConstruct
     *  @returns void
     *  @private
     */
    "_fnConstruct": function ()
    {
        var that = this;
        var iLen = this.s.dt.aoColumns.length;
        var table = this.s.dt.nTable;
        var i;

        /* allow reorder */
        if ( this.s.init.allowReorder != undefined)
        {
            this.s.allowReorder = this.s.init.allowReorder;
        }

        /* allow resize */
        if ( this.s.init.allowResize != undefined )
        {
            this.s.allowResize = this.s.init.allowResize;
        }

        /* Columns discounted from reordering - counting left to right */
        if ( this.s.init.iFixedColumns )
        {
            this.s.fixed = this.s.init.iFixedColumns;
        }

        if ( this.s.init.iFixedColumnsLeft )
        {
            this.s.fixed = this.s.init.iFixedColumnsLeft;
        }

        /* Classnames added to elements */
        if ( this.s.init.classNameClonedTable )
        {
            this.s.classNameClonedTable = this.s.init.classNameClonedTable;
        }

        if ( this.s.init.classNamePointer )
        {
            this.s.classNamePointer = this.s.init.classNamePointer;
        }

        if ( this.s.init.classNameTableHeader )
        {
            this.s.classNameTableHeader = this.s.init.classNameTableHeader;
        }

        if ( this.s.init.classNameTableHeaderHover )
        {
            this.s.classNameTableHeaderHover = this.s.init.classNameTableHeaderHover;
        }

        /* Columns discounted from reordering - counting right to left */
        this.s.fixedRight = this.s.init.iFixedColumnsRight ?
            this.s.init.iFixedColumnsRight :
            0;

        /* Drop callback initialisation option */
        if ( this.s.init.fnReorderCallback )
        {
            this.s.reorderCallback = this.s.init.fnReorderCallback;
        }

        /* Reorder callback initialisation option */
        if ( this.s.init.fnResizeCallback )
        {
            this.s.resizeCallback = this.s.init.fnResizeCallback;
        }

        /* Add event handlers for the drag and drop, and also mark the original column order */
        for ( i = 0; i < iLen; i++ )
        {
            if ( i > this.s.fixed-1 && i < iLen - this.s.fixedRight )
            {
                this._fnMouseListener( i, this.s.dt.aoColumns[i].nTh );
            }

            /* Mark the original column order for later reference */
            this.s.dt.aoColumns[i]._ColReorder_iOrigCol = i;
        }

        /* State saving */
        this.s.dt.oApi._fnCallbackReg( this.s.dt, 'aoStateSaveParams', function (oS, oData) {
            that._fnStateSave.call( that, oData );
        }, "ColReorder_State" );

        /* An initial column order has been specified */
        var aiOrder = null;
        if ( this.s.init.aiOrder )
        {
            aiOrder = this.s.init.aiOrder.slice();
        }

        /* State loading, overrides the column order given */
        if ( this.s.dt.oLoadedState && typeof this.s.dt.oLoadedState.ColReorder != 'undefined' &&
          this.s.dt.oLoadedState.ColReorder.length == this.s.dt.aoColumns.length )
        {
            aiOrder = this.s.dt.oLoadedState.ColReorder;
        }

                /* If we have an order to apply - do so */
        if ( aiOrder )
        {
            /* We might be called during or after the DataTables initialisation. If before, then we need
             * to wait until the draw is done, if after, then do what we need to do right away
             */
            if ( !that.s.dt._bInitComplete )
            {
                var bDone = false;
                $(table).on( 'draw.dt.colReorder', function () {
                    if ( !that.s.dt._bInitComplete && !bDone )
                    {
                        bDone = true;
                        var resort = fnInvertKeyValues( aiOrder );
                        that._fnOrderColumns.call( that, resort );
                    }
                } );
            }
            else
            {
                var resort = fnInvertKeyValues( aiOrder );
                that._fnOrderColumns.call( that, resort );
            }
        }
        else {
            this._fnSetColumnIndexes();
        }

        // Destroy clean up
        $(table).on( 'destroy.dt.colReorder', function () {
            $(table).off( 'destroy.dt.colReorder draw.dt.colReorder' );
            $(that.s.dt.nTHead).find( '*' ).off( '.ColReorder' );

            $.each( that.s.dt.aoColumns, function (i, column) {
                $(column.nTh).removeAttr('data-column-index');
            } );

            that.s.dt._colReorder = null;
            that.s = null;
        } );
    },


    /**
     * Set the column order from an array
     *  @method  _fnOrderColumns
     *  @param   array a An array of integers which dictate the column order that should be applied
     *  @returns void
     *  @private
     */
    "_fnOrderColumns": function ( a )
    {
        var changed = false;

        if ( a.length != this.s.dt.aoColumns.length )
        {
            this.s.dt.oInstance.oApi._fnLog( this.s.dt, 1, "ColReorder - array reorder does not "+
                "match known number of columns. Skipping." );
            return;
        }

        for ( var i=0, iLen=a.length ; i<iLen ; i++ )
        {
            var currIndex = $.inArray( i, a );
            if ( i != currIndex )
            {
                /* Reorder our switching array */
                fnArraySwitch( a, currIndex, i );

                /* Do the column reorder in the table */
                this.s.dt.oInstance.fnColReorder( currIndex, i, true, false );

                changed = true;
            }
        }

        $.fn.dataTable.Api( this.s.dt ).rows().invalidate();

        this._fnSetColumnIndexes();

        // Has anything actually changed? If not, then nothing else to do
        if ( ! changed ) {
            return;
        }

        /* When scrolling we need to recalculate the column sizes to allow for the shift */
        if ( this.s.dt.oScroll.sX !== "" || this.s.dt.oScroll.sY !== "" )
        {
            this.s.dt.oInstance.fnAdjustColumnSizing( false );
        }

        /* Save the state */
        this.s.dt.oInstance.oApi._fnSaveState( this.s.dt );

        if ( this.s.reorderCallback !== null )
        {
            this.s.reorderCallback.call( this );
        }
    },


    /**
     * Because we change the indexes of columns in the table, relative to their starting point
     * we need to reorder the state columns to what they are at the starting point so we can
     * then rearrange them again on state load!
     *  @method  _fnStateSave
     *  @param   object oState DataTables state
     *  @returns string JSON encoded cookie string for DataTables
     *  @private
     */
    "_fnStateSave": function ( oState )
    {
        var i, iLen, aCopy, iOrigColumn;
        var oSettings = this.s.dt;
        var columns = oSettings.aoColumns;

        oState.ColReorder = [];

        /* Sorting */
        if ( oState.aaSorting ) {
            // 1.10.0-
            for ( i=0 ; i<oState.aaSorting.length ; i++ ) {
                oState.aaSorting[i][0] = columns[ oState.aaSorting[i][0] ]._ColReorder_iOrigCol;
            }

            var aSearchCopy = $.extend( true, [], oState.aoSearchCols );

            for ( i=0, iLen=columns.length ; i<iLen ; i++ )
            {
                iOrigColumn = columns[i]._ColReorder_iOrigCol;

                /* Column filter */
                oState.aoSearchCols[ iOrigColumn ] = aSearchCopy[i];

                /* Visibility */
                oState.abVisCols[ iOrigColumn ] = columns[i].bVisible;

                /* Column reordering */
                oState.ColReorder.push( iOrigColumn );
            }
        }
        else if ( oState.order ) {
            // 1.10.1+
            for ( i=0 ; i<oState.order.length ; i++ ) {
                oState.order[i][0] = columns[ oState.order[i][0] ]._ColReorder_iOrigCol;
            }

            var stateColumnsCopy = $.extend( true, [], oState.columns );

            for ( i=0, iLen=columns.length ; i<iLen ; i++ )
            {
                iOrigColumn = columns[i]._ColReorder_iOrigCol;

                /* Columns */
                oState.columns[ iOrigColumn ] = stateColumnsCopy[i];

                /* Column reordering */
                oState.ColReorder.push( iOrigColumn );
            }
        }
    },


    /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
     * Mouse drop and drag
     */

    /**
     * Add a mouse down listener to a particluar TH element
     *  @method  _fnMouseListener
     *  @param   int i Column index
     *  @param   element nTh TH element clicked on
     *  @returns void
     *  @private
     */
    "_fnMouseListener": function ( i, nTh )
    {
        var that = this;
        var aoColumns = this.s.dt.aoColumns;
        var bSort =  that.s.dt.oFeatures.bSort

        var tableHeaderHoverClassname =  this.s.classNameTableHeaderHover;
        var tableHeaderClassname =  this.s.classNameTableHeader;

        // Rebind events since after column re-order they use wrong column indices.
        $(nTh).off('.ColReorder');

        // listen to mousemove event for resize
        if (this.s.allowResize) {
            $(nTh).on( 'mousemove.ColReorder', function (e) {
                if (that.dom.drag === null && that.dom.resize === null)
                {
                    /* Store information about the mouse position */
                    var nThTarget = e.target.nodeName == "TH" ? e.target : $(e.target).parents('TH')[0];
                    var offset = $(nThTarget).offset();
                    var nLength = $(nThTarget).innerWidth();

                    /* are we on the col border (if so, resize col) */
                    if (Math.abs(e.pageX - Math.round(offset.left + nLength)) <= 5)
                    {
                        $(nThTarget).css({'cursor': 'col-resize'});
                        $(nThTarget).removeClass( tableHeaderClassname );
                        $(nThTarget).addClass( tableHeaderHoverClassname );
                    }
                    else {
                        $(nThTarget).css({'cursor': 'pointer'});
                        $(nThTarget).removeClass( tableHeaderHoverClassname );
                        $(nThTarget).addClass( tableHeaderClassname );
                    }
                }
            } );
        }

        $(nTh)
            .on( 'mousedown.ColReorder', function (e) {
                e.preventDefault();
                if (e.which == 1) {
                    that._fnMouseDown.call( that, e, nTh, i );
                }
            } )
            .on( 'touchstart.ColReorder', function (e) {
                that._fnMouseDown.call( that, e, nTh, i );
            } );
    },


    /**
     * Mouse down on a TH element in the table header
     *  @method  _fnMouseDown
     *  @param   event e Mouse event
     *  @param   element nTh TH element to be dragged
     *  @param      i The column that's resized/dragged
     *  @returns void
     *  @private
     */
    "_fnMouseDown": function ( e, nTh, i )
    {
        var
            that = this,
        aoColumns = this.s.dt.aoColumns;


        function addEventsHandler() {
          /* Add event handlers to the document */
          $(document)
              .on( 'mousemove.ColReorder touchmove.ColReorder', function (e) {
                  // Added index of the call being dragged or resized.
                  that._fnMouseMove.call( that, e, i);
              } )
              .on( 'mouseup.ColReorder touchend.ColReorder', function (e) {                  
                  e.preventDefault();
                  e.stopPropagation();
                  that._fnMouseUp.call( that, e, i );
              } );
        }

        /* are we resizing a column ? */
        if ($(nTh).css('cursor') == 'col-resize') {
            this.s.mouse.startX = e.pageX;
            this.s.mouse.startWidth = $(nTh).width();
            this.s.mouse.resizeElem = $(nTh);

            var nThNext = $(nTh).next();
            this.s.mouse.nextStartWidth = $(nThNext).width();
            that.dom.resize = true;
            // Disable column sorting in order to avoid issues when finishing column resizing.
            aoColumns[i].CRbSortableCache = aoColumns[i].bSortable;
            aoColumns[i].bSortable = false;
            // Disable Autowidth feature (now the user is in charge of setting column width so keeping this enabled looses changes after operations).
            this.s.dt.oFeatures.bAutoWidth = false;
            addEventsHandler();
        }
        else if (this.s.allowReorder) {
            if (aoColumns[i].bReorderable === false) {
                return false;
            }

            that.dom.resize = null;
            /* Store information about the mouse position */
            var target = $(e.target).closest('th, td');
            var offset = target.offset();
            var idx = parseInt( $(nTh).attr('data-column-index'), 10 );

            if ( idx === undefined ) {
                return;
            }

            this.s.mouse.startX = this._fnCursorPosition( e, 'pageX' );
            this.s.mouse.startY = this._fnCursorPosition( e, 'pageY' );
            this.s.mouse.offsetX = this._fnCursorPosition( e, 'pageX' ) - offset.left;
            this.s.mouse.offsetY = this._fnCursorPosition( e, 'pageY' ) - offset.top;
            this.s.mouse.target = this.s.dt.aoColumns[ idx ].nTh;
            this.s.mouse.targetIndex = idx;
            this.s.mouse.fromIndex = idx;

            this._fnRegions();
            addEventsHandler();
        }

    },


    /**
     * Deal with a mouse move event while dragging a node
     *  @method  _fnMouseMove
     *  @param   event e Mouse event
     *  @param   colResized Index of the column that's being dragged or resized (index within the internal model, not the visible order)
     *  @returns void
     *  @private
     */
    "_fnMouseMove": function ( e, colResized )
    {
        var that = this;

        // Handle column resizing.
        if(this.dom.resize) {
            // Since some columns might have been hidden, find the correct one to resize in the table's body
            var currentColumnIndex;
            var visibleColumnIndex = -1;
            for(currentColumnIndex=-1; currentColumnIndex < this.s.dt.aoColumns.length-1 && currentColumnIndex != colResized; currentColumnIndex++) {
                if(this.s.dt.aoColumns[currentColumnIndex+1].bVisible) {
                    visibleColumnIndex++;
                }
            }
            visibleColumnIndex++;

            var $nTh = $(this.s.mouse.resizeElem);
            var $nThNext = $($nTh.next('th'));
            var $body = $(this.s.dt.nTBody);
            var $head = $(this.s.dt.nTHead);

               var nThInnerWidth = $nTh.first().innerWidth();
            var nThNextInnerWidth = $nThNext.first().innerWidth();

            var moveLength = e.pageX-this.s.mouse.startX;
            var nThWidth = parseInt(this.s.mouse.startWidth + moveLength);
            var nThNextWidth = parseInt(this.s.mouse.nextStartWidth - moveLength);

            var scrollXEnabled = this.s.dt.oInit.sScrollX !== undefined;
            var scrollYEnabled = this.s.dt.oInit.sScrollY !== undefined;

            // Smart scrolling is not enabled.
            if(!scrollXEnabled && !scrollYEnabled) {
                if(moveLength < 0) {
                    // Hack to calculate the minimum width of the column based on contents.
                    $nTh.width('1%');
                    var minNThWidth = $nTh.width();
                    $nTh.width(this.s.mouse.startWidth);

                    if(nThWidth >= minNThWidth) {
                        $nTh.width(nThWidth);
                    }
                    else {
                        $nTh.width(minNThWidth);
                    }
                }
                else {
                    // Hack to calculate the minimum width of the column based on contents.
                    $nThNext.width('1%');
                    var minNThNextWidth = $nThNext.width();
                    $nThNext.width(this.s.mouse.nextStartWidth);

                    if(nThNextInnerWidth <= minNThNextWidth) { return; }

                    $nTh.width(nThWidth);
                }
            }
            // Smart scrolling is enabled.
            else {
                // Keep the current table's width (used in case sScrollX is enabled to resize the whole table, giving an Excel-like behavior)
                var $scrollHead = $(this.s.dt.nScrollHead);
                var $scrollBody = $(this.s.dt.nScrollBody);

                // Keep the current table's width (used in case sScrollX is enabled to resize the whole table, giving an Excel-like behavior)
                if(scrollXEnabled) {
                    var $scrollHeadInner = $scrollHead.find('div.dataTables_scrollHeadInner');
                    var $scrollHeadTableWrapper = $(this.s.dt.nTableWrapper);
                    if((this.table_size === undefined || this.table_size < 0) && $scrollHeadTableWrapper.length > 0) {
                        this.table_size = $($scrollHead[0].childNodes[0].childNodes[0]).width();
                    }

                    if(this.table_size + moveLength > $scrollHeadTableWrapper.width()) {
                        // Resize the header too (if sScrollX is enabled).
                        if($scrollHeadTableWrapper.length) {
                            $($scrollHeadTableWrapper[0].childNodes[0].childNodes[0]).width(this.table_size + moveLength);
                        }
                        $($scrollHeadInner).width(this.table_size + moveLength);

                        // Resize the table too (if sScrollX is enabled).
                        var new_table_size = this.table_size;
                        if(this.table_size + moveLength > $scrollHeadTableWrapper.width()) {
                            new_table_size += moveLength;
                        }
                        $scrollBody.closest('.dataTables_scroll').find('.dataTables_scrollHead table').first().width(new_table_size);
                        $scrollBody.closest('.dataTables_scroll').find('.dataTables_scrollBody table').first().width(new_table_size);
                    }
                }

                // When resizing the header, also resize the table's body (when enabling the Scroller, the table's header and
                // body are split into different tables, so the column resizing doesn't work anymore).
                // Since some columns might have been hidden, find the correct one to resize in the table's body

                // Get the first row in the scrollBody thead.
                var $scrollBodyTheadTr = $scrollBody.find('thead').first('tr');
                var $scrollBodyNTh = $scrollBodyTheadTr.find('th:nth-child('+visibleColumnIndex+')');
                var $scrollBodyNThNext = $scrollBodyTheadTr.find('th:nth-child('+(visibleColumnIndex+1)+')');
                var $scrollBodyThSizing = $scrollBodyNTh.find('.dataTables_sizing');
                var $scrollBodyThNextSizing = $scrollBodyNThNext.find('.dataTables_sizing');

                // Get the first row in the scrollBody tbody.
                var $scrollBodyTbodyTr = $scrollBody.find('tbody').first('tr');
                var $scrollBodyNTd = $scrollBodyTbodyTr.find('td:nth-child('+visibleColumnIndex+')');
                var $scrollBodyNTdNext = $scrollBodyTbodyTr.find('td:nth-child('+(visibleColumnIndex+1)+')');

                if(moveLength < 0) {
                    // Hack to calculate the minimum width of the column based on contents.
                    $scrollBodyNTh.width('1%');
                    var minNThWidth = $scrollBodyNTh.width();
                    $scrollBodyNTh.width(this.s.mouse.startWidth);

                    if(nThWidth >= minNThWidth) {
                        $nTh.width(nThWidth);
                        $scrollBodyNTh.width(nThWidth);
                    }
                    else {
                        $nTh.width(minNThWidth);
                        $scrollBodyNTh.width(minNThWidth);
                    }
                }
                else {
                    // Hack to calculate the minimum width of the column based on contents.
                    $scrollBodyNThNext.width('1%');
                    var minNThNextWidth = $scrollBodyNThNext.width();
                    $scrollBodyNThNext.width(this.s.mouse.nextStartWidth);

                    if($scrollBodyNThNext.width() <= minNThNextWidth) { return; }

                    $nTh.width(nThWidth);
                    $scrollBodyNTh.width(nThWidth);
                }
            }
        }
        else if(this.s.allowReorder) {
            if( this.dom.drag === null ) {
                /* Only create the drag element if the mouse has moved a specific distance from the start
                 * point - this allows the user to make small mouse movements when sorting and not have a
                 * possibly confusing drag element showing up
                 */
                if ( Math.pow(
                    Math.pow(this._fnCursorPosition( e, 'pageX') - this.s.mouse.startX, 2) +
                        Math.pow(this._fnCursorPosition( e, 'pageY') - this.s.mouse.startY, 2), 0.5 ) < 5 )
                {
                    return;
                }
                this._fnCreateDragNode();
            }

            /* Position the element - we respect where in the element the click occured */
            this.dom.drag.css( {
                left: this._fnCursorPosition( e, 'pageX' ) - this.s.mouse.offsetX,
                top: this._fnCursorPosition( e, 'pageY' ) - this.s.mouse.offsetY
            } );

            /* Based on the current mouse position, calculate where the insert should go */
            var bSet = false;
            var lastToIndex = this.s.mouse.toIndex;

            for ( var i=1, iLen=this.s.aoTargets.length ; i<iLen ; i++ )
            {
                if ( this._fnCursorPosition(e, 'pageX') < this.s.aoTargets[i-1].x + ((this.s.aoTargets[i].x-this.s.aoTargets[i-1].x)/2) )
                {
                    this.dom.pointer.css( 'left', this.s.aoTargets[i-1].x );
                    this.s.mouse.toIndex = this.s.aoTargets[i-1].to;
                    bSet = true;
                    break;
                }
            }

            // The insert element wasn't positioned in the array (less than
            // operator), so we put it at the end
            if ( !bSet )
            {
                this.dom.pointer.css( 'left', this.s.aoTargets[this.s.aoTargets.length-1].x );
                this.s.mouse.toIndex = this.s.aoTargets[this.s.aoTargets.length-1].to;
            }

            // Perform reordering if realtime updating is on and the column has moved
            if ( this.s.init.bRealtime && lastToIndex !== this.s.mouse.toIndex ) {
                this.s.dt.oInstance.fnColReorder( this.s.mouse.fromIndex, this.s.mouse.toIndex, false );
                this.s.mouse.fromIndex = this.s.mouse.toIndex;
                this._fnRegions();
            }
        }
    },


    /**
     * Finish off the mouse drag and insert the column where needed
     *  @method  _fnMouseUp
     *  @param   event e Mouse event
     *  @param colResized The index of the column that was just dragged or resized (index within the internal model, not the visible order).
     *  @returns void
     *  @private
     */
    "_fnMouseUp": function ( e, colResized)
    {
        var that = this;

        $(document).off('.ColReorder');

        if ( this.dom.drag !== null )
        {
            /* Remove the guide elements */
            this.dom.drag.remove();
            this.dom.pointer.remove();
            this.dom.drag = null;
            this.dom.pointer = null;

            /* Actually do the reorder */
            this.s.dt.oInstance.fnColReorder( this.s.mouse.fromIndex, this.s.mouse.toIndex, true );
            this._fnSetColumnIndexes();

            /* When scrolling we need to recalculate the column sizes to allow for the shift */
            if ( this.s.dt.oScroll.sX !== "" || this.s.dt.oScroll.sY !== "" )
            {
                this.s.dt.oInstance.fnAdjustColumnSizing( false );
            }

            this.s.dt.oInstance.trigger('column-reorder.dt.mouseup', [ this.s.dt ] );

            /* Save the state */
            this.s.dt.oInstance.oApi._fnSaveState( this.s.dt );

            if ( this.s.reorderCallback !== null )
            {
                this.s.reorderCallback.call( this );
            }
        }
        else if(this.dom.resize !== null) {
            var i;
            var j;
            var currentColumn;
            var nextVisibleColumnIndex;
            var previousVisibleColumnIndex;
            var scrollXEnabled;

            //Re-enable column sorting
            this.s.dt.aoColumns[colResized].bSortable = this.s.dt.aoColumns[colResized].CRbSortableCache;

            //Save the new resized column's width
            this.s.dt.aoColumns[colResized].sWidth = $(this.s.mouse.resizeElem).width() + "px";

            //If other columns might have changed their size, save their size too
            scrollXEnabled = this.s.dt.oInit.sScrollX === "" ? false : true;
            if(!scrollXEnabled) {
                //The colResized index (internal model) here might not match the visible index since some columns might have been hidden
                for(nextVisibleColumnIndex=colResized+1; nextVisibleColumnIndex < this.s.dt.aoColumns.length; nextVisibleColumnIndex++) {
                    if(this.s.dt.aoColumns[nextVisibleColumnIndex].bVisible) {
                        break;
                    }
                }

                for(previousVisibleColumnIndex=colResized-1; previousVisibleColumnIndex >= 0; previousVisibleColumnIndex--) {
                    if(this.s.dt.aoColumns[previousVisibleColumnIndex].bVisible) {
                        break;
                    }
                }

                if(this.s.dt.aoColumns.length > nextVisibleColumnIndex) {
                    this.s.dt.aoColumns[nextVisibleColumnIndex].sWidth = $(this.s.mouse.resizeElem).next().width() + "px";
                }
                // The column resized is the right-most, so save the sizes of all the columns at the left
                else {
                    currentColumn = this.s.mouse.resizeElem;
                    for(i = previousVisibleColumnIndex; i > 0; i--) {
                        if(this.s.dt.aoColumns[i].bVisible) {
                            currentColumn = $(currentColumn).prev();
                            this.s.dt.aoColumns[i].sWidth = $(currentColumn).width() + "px";
                        }
                    }
                }
            }

            // Update the internal storage of the table's width (in case we changed it because the user resized some column and scrollX was enabled
            if(scrollXEnabled && $(this.s.dt.nScrollHead, this.s.dt.nTableWrapper) != undefined){
                if($(this.s.dt.nScrollHead, this.s.dt.nTableWrapper).length > 0)
                    this.table_size = $($(this.s.dt.nScrollHead, this.s.dt.nTableWrapper)[0].childNodes[0].childNodes[0]).width();
            }

            this.s.dt.oInstance.trigger('column-resize.dt.mouseup', [ this.s.dt ] );

            /* Save the state */
            this.s.dt.oInstance.oApi._fnSaveState( this.s.dt );

            /* When scrolling we need to recalculate the column sizes to allow for the shift */
            if (scrollXEnabled && (this.s.dt.oScroll.sX !== "" || this.s.dt.oScroll.sY !== "" ))
            {
                this.s.dt.oInstance.fnAdjustColumnSizing( false );
            }

            if ( this.s.resizeCallback !== null )
            {
                this.s.resizeCallback.call( this );
            }
        }

        this.dom.resize = null;
        return false;
    },


    /**
     * Calculate a cached array with the points of the column inserts, and the
     * 'to' points
     *  @method  _fnRegions
     *  @returns void
     *  @private
     */
    "_fnRegions": function ()
    {
        var aoColumns = this.s.dt.aoColumns;

        this.s.aoTargets.splice( 0, this.s.aoTargets.length );

        this.s.aoTargets.push( {
            "x":  $(this.s.dt.nTable).offset().left,
            "to": 0
        } );

        var iToPoint = 0;
        var total = this.s.aoTargets[0].x;

        for ( var i=0, iLen=aoColumns.length ; i<iLen ; i++ )
        {
            /* For the column / header in question, we want it's position to remain the same if the
             * position is just to it's immediate left or right, so we only increment the counter for
             * other columns
             */
            if ( i != this.s.mouse.fromIndex )
            {
                iToPoint++;
            }

            if ( aoColumns[i].bVisible && aoColumns[i].nTh.style.display !=='none' )
            {
                total += $(aoColumns[i].nTh).outerWidth();

                this.s.aoTargets.push( {
                    "x":  total,
                    "to": iToPoint
                } );
            }
        }

        /* Disallow columns for being reordered by drag and drop, counting right to left */
        if ( this.s.fixedRight !== 0 )
        {
            this.s.aoTargets.splice( this.s.aoTargets.length - this.s.fixedRight );
        }

        /* Disallow columns for being reordered by drag and drop, counting left to right */
        if ( this.s.fixed !== 0 )
        {
            this.s.aoTargets.splice( 0, this.s.fixed );
        }
    },


    /**
     * Copy the TH element that is being drags so the user has the idea that they are actually
     * moving it around the page.
     *  @method  _fnCreateDragNode
     *  @returns void
     *  @private
     */
    "_fnCreateDragNode": function ()
    {
        var scrolling = this.s.dt.oScroll.sX !== "" || this.s.dt.oScroll.sY !== "";

        var origCell = this.s.dt.aoColumns[ this.s.mouse.targetIndex ].nTh;
        var origTr = origCell.parentNode;
        var origThead = origTr.parentNode;
        var origTable = origThead.parentNode;
        var cloneCell = $(origCell).clone();

        // This is a slightly odd combination of jQuery and DOM, but it is the
        // fastest and least resource intensive way I could think of cloning
        // the table with just a single header cell in it.
        this.dom.drag = $(origTable.cloneNode(false))
            .addClass( this.s.classNameClonedTable )
            .append(
                $(origThead.cloneNode(false)).append(
                    $(origTr.cloneNode(false)).append(
                        cloneCell[0]
                    )
                )
            )
            .css( {
                position: 'absolute',
                top: 0,
                left: 0,
                width: $(origCell).outerWidth(),
                height: $(origCell).outerHeight()
            } )
            .appendTo( 'body' );

        this.dom.pointer = $('<div></div>')
            .addClass( this.s.classNamePointer )
            .css( {
                position: 'absolute',
                top: scrolling ?
                    $('div.dataTables_scroll', this.s.dt.nTableWrapper).offset().top :
                    $(this.s.dt.nTable).offset().top,
                height : scrolling ?
                    $('div.dataTables_scroll', this.s.dt.nTableWrapper).height() :
                    $(this.s.dt.nTable).height()
            } )
            .appendTo( 'body' );
    },


    /**
     * Add a data attribute to the column headers, so we know the index of
     * the row to be reordered. This allows fast detection of the index, and
     * for this plug-in to work with FixedHeader which clones the nodes.
     *  @private
     */
    "_fnSetColumnIndexes": function ()
    {
        $.each( this.s.dt.aoColumns, function (i, column) {
            $(column.nTh).attr('data-column-index', i);
        } );
    },


    /**
     * Get cursor position regardless of mouse or touch input
     * @param  {Event}  e    jQuery Event
     * @param  {string} prop Property to get
     * @return {number}      Value
     */
    _fnCursorPosition: function ( e, prop ) {
        if ( e.type.indexOf('touch') !== -1 ) {
            return e.originalEvent.touches[0][ prop ];
        }
        return e[ prop ];
    }
} );



/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Static parameters
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**
 * ColReorder default settings for initialisation
 *  @namespace
 *  @static
 */
ColReorder.defaults = {
    /**
     * Predefined ordering for the columns that will be applied automatically
     * on initialisation. If not specified then the order that the columns are
     * found to be in the HTML is the order used.
     *  @type array
     *  @default null
     *  @static
     */
    aiOrder: null,

    /**
     * Redraw the table's column ordering as the end user draws the column
     * (`true`) or wait until the mouse is released (`false` - default). Note
     * that this will perform a redraw on each reordering, which involves an
     * Ajax request each time if you are using server-side processing in
     * DataTables.
     *  @type boolean
     *  @default false
     *  @static
     */
    bRealtime: true,

    /**
     * Indicate how many columns should be fixed in position (counting from the
     * left). This will typically be 1 if used, but can be as high as you like.
     *  @type int
     *  @default 0
     *  @static
     */
    iFixedColumnsLeft: 0,

    /**
     * As `iFixedColumnsRight` but counting from the right.
     *  @type int
     *  @default 0
     *  @static
     */
    iFixedColumnsRight: 0,

    /**
     * Callback function that is fired when columns are reordered. The `column-
     * reorder` event is preferred over this callback
     *  @type function():void
     *  @default null
     *  @static
     */
    fnReorderCallback: null,

    /**
     * Callback function that is fired when columns are resized. The `column-
     * resize` event is preferred over this callback
     *  @type function():void
     *  @default null
     *  @static
     */
    fnResizeCallback: null,

    /**
     * Allow Reorder functionnality
     *  @property allowReorder
     *  @type     boolean
     *  @default  true
     */
    allowReorder: true,

    /**
     * Allow Resize functionnality
     *  @property allowResize
     *  @type     boolean
     *  @default  true
     */
    allowResize: true,

    /**
     * Classname added to cloned element
     *  @type string
     *  @default 'DTCR_clonedTable'
     *  @static
     */
    classNameClonedTable: 'DTCR_clonedTable',

    /**
     * Classname added to the cloned element wrapper
     *  @type string
     *  @default 'DTCR_pointer'
     *  @static
     */
    classNamePointer: 'DTCR_pointer',

    /**
     * Classname added to the resizable th
     *  @type string
     *  @default 'DTCR_tableHeader'
     *  @static
     */
    classNameTableHeader: 'DTCR_tableHeader',

    /**
     * Classname added to the resizable th when hovered
     *  @type string
     *  @default 'DTCR_tableHeaderHover'
     *  @static
     */
    classNameTableHeaderHover: 'DTCR_tableHeaderHover'
};



/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Constants
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**
 * ColReorder version
 *  @constant  version
 *  @type      String
 *  @default   As code
 */
ColReorder.version = "1.3.3";

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * DataTables interfaces
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

// Expose
$.fn.dataTable.ColReorder = ColReorder;
$.fn.DataTable.ColReorder = ColReorder;


// Register a new feature with DataTables
if ( typeof $.fn.dataTable == "function" &&
     typeof $.fn.dataTableExt.fnVersionCheck == "function" &&
     $.fn.dataTableExt.fnVersionCheck('1.10.8') )
{
    $.fn.dataTableExt.aoFeatures.push( {
        "fnInit": function( settings ) {
            var table = settings.oInstance;

            if ( ! settings._colReorder ) {
                var dtInit = settings.oInit;
                var opts = dtInit.colReorder || dtInit.oColReorder || {};

                new ColReorder( settings, opts );
            }
            else {
                table.oApi._fnLog( settings, 1, "ColReorder attempted to initialise twice. Ignoring second" );
            }

            return null; /* No node for DataTables to insert */
        },
        "cFeature": "R",
        "sFeature": "ColReorder"
    } );
}
else {
    alert( "Warning: ColReorder requires DataTables 1.10.8 or greater - www.datatables.net/download");
}


// Attach a listener to the document which listens for DataTables initialisation
// events so we can automatically initialise
$(document).on( 'preInit.dt.colReorder', function (e, settings) {
    if ( e.namespace !== 'dt' ) {
        return;
    }

    var init = settings.oInit.colReorder;
    var defaults = DataTable.defaults.colReorder;

    if ( init || defaults ) {
        var opts = $.extend( {}, init, defaults );

        if ( init !== false ) {
            new ColReorder( settings, opts  );
        }
    }
} );


// API augmentation
$.fn.dataTable.Api.register( 'colReorder.reset()', function () {
    return this.iterator( 'table', function ( ctx ) {
        ctx._colReorder.fnReset();
    } );
} );

$.fn.dataTable.Api.register( 'colReorder.order()', function ( set, original ) {
    if ( set ) {
        return this.iterator( 'table', function ( ctx ) {
            ctx._colReorder.fnOrder( set, original );
        } );
    }

    return this.context.length ?
        this.context[0]._colReorder.fnOrder() :
        null;
} );

$.fn.dataTable.Api.register( 'colReorder.transpose()', function ( idx, dir ) {
    return this.context.length && this.context[0]._colReorder ?
        this.context[0]._colReorder.fnTranspose( idx, dir ) :
        idx;
} );


return ColReorder;
}));