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Current File : /var/www/html/merenda/dev/datatables/extensions/FixedHeader/js/dataTables.fixedHeader.js
/*! FixedHeader 2.1.2
 * ©2010-2014 SpryMedia Ltd - datatables.net/license
 */

/**
 * @summary     FixedHeader
 * @description Fix a table's header or footer, so it is always visible while
 *              Scrolling
 * @version     2.1.2
 * @file        dataTables.fixedHeader.js
 * @author      SpryMedia Ltd (www.sprymedia.co.uk)
 * @contact     www.sprymedia.co.uk/contact
 * @copyright   Copyright 2009-2014 SpryMedia Ltd.
 *
 * This source file is free software, available under the following license:
 *   MIT license - http://datatables.net/license/mit
 *
 * 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: http://www.datatables.net
 */

/* Global scope for FixedColumns for backwards compatibility - will be removed
 * in future. Not documented in 1.1.x.
 */

/* Global scope for FixedColumns */
var FixedHeader;

(function (window, document, undefined) {


    var factory = function ($, DataTable) {
        "use strict";

        /*
         * Function: FixedHeader
         * Purpose:  Provide 'fixed' header, footer and columns for a DataTable
         * Returns:  object:FixedHeader - must be called with 'new'
         * Inputs:   mixed:mTable - target table
         *  @param {object} dt DataTables instance or HTML table node. With DataTables
         *    1.10 this can also be a jQuery collection (with just a single table in its
         *    result set), a jQuery selector, DataTables API instance or settings
         *    object.
         *  @param {object} [oInit] initialisation settings, with the following
         *    properties (each optional)
         *    * bool:top -    fix the header (default true)
         *    * bool:bottom - fix the footer (default false)
         *    * int:left -    fix the left column(s) (default 0)
         *    * int:right -   fix the right column(s) (default 0)
         *    * int:zTop -    fixed header zIndex
         *    * int:zBottom - fixed footer zIndex
         *    * int:zLeft -   fixed left zIndex
         *    * int:zRight -  fixed right zIndex
         */
        FixedHeader = function (mTable, oInit) {
            /* Sanity check - you just know it will happen */
            if (!this instanceof FixedHeader) {
                alert("FixedHeader warning: FixedHeader must be initialised with the 'new' keyword.");
                return;
            }

            var that = this;
            var oSettings = {
                "aoCache": [],
                "oSides": {
                    "top": true,
                    "bottom": false,
                    "left": 0,
                    "right": 0
                },
                "oZIndexes": {
                    "top": 104,
                    "bottom": 103,
                    "left": 102,
                    "right": 101
                },
                "oCloneOnDraw": {
                    "top": false,
                    "bottom": false,
                    "left": true,
                    "right": true
                },
                "oMes": {
                    "iTableWidth": 0,
                    "iTableHeight": 0,
                    "iTableLeft": 0,
                    "iTableRight": 0, /* note this is left+width, not actually "right" */
                    "iTableTop": 0,
                    "iTableBottom": 0 /* note this is top+height, not actually "bottom" */
                },
                "oOffset": {
                    "top": 0
                },
                "nTable": null,
                "bFooter": false,
                "bInitComplete": false
            };

            /*
             * Function: fnGetSettings
             * Purpose:  Get the settings for this object
             * Returns:  object: - settings object
             * Inputs:   -
             */
            this.fnGetSettings = function () {
                return oSettings;
            };

            /*
             * Function: fnUpdate
             * Purpose:  Update the positioning and copies of the fixed elements
             * Returns:  -
             * Inputs:   -
             */
            this.fnUpdate = function () {
                this._fnUpdateClones();
                this._fnUpdatePositions();
            };

            /*
             * Function: fnPosition
             * Purpose:  Update the positioning of the fixed elements
             * Returns:  -
             * Inputs:   -
             */
            this.fnPosition = function () {
                this._fnUpdatePositions();
            };


            var dt = $.fn.dataTable.Api ?
                new $.fn.dataTable.Api(mTable).settings()[0] :
                mTable.fnSettings();

            dt._oPluginFixedHeader = this;

            /* Let's do it */
            this.fnInit(dt, oInit);

        };


        /*
         * Variable: FixedHeader
         * Purpose:  Prototype for FixedHeader
         * Scope:    global
         */
        FixedHeader.prototype = {
            /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
             * Initialisation
             */

            /*
             * Function: fnInit
             * Purpose:  The "constructor"
             * Returns:  -
             * Inputs:   {as FixedHeader function}
             */
            fnInit: function (oDtSettings, oInit) {
                var s = this.fnGetSettings();
                var that = this;

                /* Record the user definable settings */
                this.fnInitSettings(s, oInit);

                if (oDtSettings.oScroll.sX !== "" || oDtSettings.oScroll.sY !== "") {
                    alert("FixedHeader 2 is not supported with DataTables' scrolling mode at this time");
                    return;
                }

                s.nTable = oDtSettings.nTable;
                oDtSettings.aoDrawCallback.unshift({
                    "fn": function () {
                        FixedHeader.fnMeasure();
                        that._fnUpdateClones.call(that);
                        that._fnUpdatePositions.call(that);
                    },
                    "sName": "FixedHeader"
                });

                s.bFooter = ($('>tfoot', s.nTable).length > 0) ? true : false;

                /* Add the 'sides' that are fixed */
                if (s.oSides.top) {
                    s.aoCache.push(that._fnCloneTable("fixedHeader", "FixedHeader_Header", that._fnCloneThead));
                }
                if (s.oSides.bottom) {
                    s.aoCache.push(that._fnCloneTable("fixedFooter", "FixedHeader_Footer", that._fnCloneTfoot));
                }
                if (s.oSides.left) {
                    s.aoCache.push(that._fnCloneTable("fixedLeft", "FixedHeader_Left", that._fnCloneTLeft, s.oSides.left));
                }
                if (s.oSides.right) {
                    s.aoCache.push(that._fnCloneTable("fixedRight", "FixedHeader_Right", that._fnCloneTRight, s.oSides.right));
                }

                /* Event listeners for window movement */
                FixedHeader.afnScroll.push(function () {
                    that._fnUpdatePositions.call(that);
                });

                $(window).resize(function () {
                    FixedHeader.fnMeasure();
                    that._fnUpdateClones.call(that);
                    that._fnUpdatePositions.call(that);
                });

                $(s.nTable)
                    .on('column-reorder.dt', function () {
                        FixedHeader.fnMeasure();
                        that._fnUpdateClones(true);
                        that._fnUpdatePositions();
                    })
                    .on('column-visibility.dt', function () {
                        FixedHeader.fnMeasure();
                        that._fnUpdateClones(true);
                        that._fnUpdatePositions();
                    });

                /* Get things right to start with */
                FixedHeader.fnMeasure();
                that._fnUpdateClones();
                that._fnUpdatePositions();

                s.bInitComplete = true;
            },


            /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
             * Support functions
             */

            /*
             * Function: fnInitSettings
             * Purpose:  Take the user's settings and copy them to our local store
             * Returns:  -
             * Inputs:   object:s - the local settings object
             *           object:oInit - the user's settings object
             */
            fnInitSettings: function (s, oInit) {
                if (oInit !== undefined) {
                    if (oInit.top !== undefined) {
                        s.oSides.top = oInit.top;
                    }
                    if (oInit.bottom !== undefined) {
                        s.oSides.bottom = oInit.bottom;
                    }
                    if (typeof oInit.left == 'boolean') {
                        s.oSides.left = oInit.left ? 1 : 0;
                    }
                    else if (oInit.left !== undefined) {
                        s.oSides.left = oInit.left;
                    }
                    if (typeof oInit.right == 'boolean') {
                        s.oSides.right = oInit.right ? 1 : 0;
                    }
                    else if (oInit.right !== undefined) {
                        s.oSides.right = oInit.right;
                    }

                    if (oInit.zTop !== undefined) {
                        s.oZIndexes.top = oInit.zTop;
                    }
                    if (oInit.zBottom !== undefined) {
                        s.oZIndexes.bottom = oInit.zBottom;
                    }
                    if (oInit.zLeft !== undefined) {
                        s.oZIndexes.left = oInit.zLeft;
                    }
                    if (oInit.zRight !== undefined) {
                        s.oZIndexes.right = oInit.zRight;
                    }

                    if (oInit.offsetTop !== undefined) {
                        s.oOffset.top = oInit.offsetTop;
                    }
                    if (oInit.alwaysCloneTop !== undefined) {
                        s.oCloneOnDraw.top = oInit.alwaysCloneTop;
                    }
                    if (oInit.alwaysCloneBottom !== undefined) {
                        s.oCloneOnDraw.bottom = oInit.alwaysCloneBottom;
                    }
                    if (oInit.alwaysCloneLeft !== undefined) {
                        s.oCloneOnDraw.left = oInit.alwaysCloneLeft;
                    }
                    if (oInit.alwaysCloneRight !== undefined) {
                        s.oCloneOnDraw.right = oInit.alwaysCloneRight;
                    }
                }
            },

            /*
             * Function: _fnCloneTable
             * Purpose:  Clone the table node and do basic initialisation
             * Returns:  -
             * Inputs:   -
             */
            _fnCloneTable: function (sType, sClass, fnClone, iCells) {
                var s = this.fnGetSettings();
                var nCTable;

                /* We know that the table _MUST_ has a DIV wrapped around it, because this is simply how
                 * DataTables works. Therefore, we can set this to be relatively position (if it is not
                 * alreadu absolute, and use this as the base point for the cloned header
                 */
                if ($(s.nTable.parentNode).css('position') != "absolute") {
                    s.nTable.parentNode.style.position = "relative";
                }

                /* Just a shallow clone will do - we only want the table node */
                nCTable = s.nTable.cloneNode(false);
                nCTable.removeAttribute('id');

                var nDiv = document.createElement('div');
                nDiv.style.position = "absolute";
                nDiv.style.top = "0px";
                nDiv.style.left = "0px";
                nDiv.className += " FixedHeader_Cloned " + sType + " " + sClass;

                /* Set the zIndexes */
                if (sType == "fixedHeader") {
                    nDiv.style.zIndex = s.oZIndexes.top;
                }
                if (sType == "fixedFooter") {
                    nDiv.style.zIndex = s.oZIndexes.bottom;
                }
                if (sType == "fixedLeft") {
                    nDiv.style.zIndex = s.oZIndexes.left;
                }
                else if (sType == "fixedRight") {
                    nDiv.style.zIndex = s.oZIndexes.right;
                }

                /* remove margins since we are going to position it absolutely */
                nCTable.style.margin = "0";

                /* Insert the newly cloned table into the DOM, on top of the "real" header */
                nDiv.appendChild(nCTable);
                document.body.appendChild(nDiv);

                return {
                    "nNode": nCTable,
                    "nWrapper": nDiv,
                    "sType": sType,
                    "sPosition": "",
                    "sTop": "",
                    "sLeft": "",
                    "fnClone": fnClone,
                    "iCells": iCells
                };
            },

            /*
             * Function: _fnMeasure
             * Purpose:  Get the current positioning of the table in the DOM
             * Returns:  -
             * Inputs:   -
             */
            _fnMeasure: function () {
                var
                    s = this.fnGetSettings(),
                    m = s.oMes,
                    jqTable = $(s.nTable),
                    oOffset = jqTable.offset(),
                    iParentScrollTop = this._fnSumScroll(s.nTable.parentNode, 'scrollTop'),
                    iParentScrollLeft = this._fnSumScroll(s.nTable.parentNode, 'scrollLeft');

                m.iTableWidth = jqTable.outerWidth();
                m.iTableHeight = jqTable.outerHeight();
                m.iTableLeft = oOffset.left + s.nTable.parentNode.scrollLeft;
                m.iTableTop = oOffset.top + iParentScrollTop;
                m.iTableRight = m.iTableLeft + m.iTableWidth;
                m.iTableRight = FixedHeader.oDoc.iWidth - m.iTableLeft - m.iTableWidth;
                m.iTableBottom = FixedHeader.oDoc.iHeight - m.iTableTop - m.iTableHeight;
            },

            /*
             * Function: _fnSumScroll
             * Purpose:  Sum node parameters all the way to the top
             * Returns:  int: sum
             * Inputs:   node:n - node to consider
             *           string:side - scrollTop or scrollLeft
             */
            _fnSumScroll: function (n, side) {
                var i = n[side];
                while (n = n.parentNode) {
                    if (n.nodeName == 'HTML' || n.nodeName == 'BODY') {
                        break;
                    }
                    i = n[side];
                }
                return i;
            },

            /*
             * Function: _fnUpdatePositions
             * Purpose:  Loop over the fixed elements for this table and update their positions
             * Returns:  -
             * Inputs:   -
             */
            _fnUpdatePositions: function () {
                var s = this.fnGetSettings();
                this._fnMeasure();

                for (var i = 0, iLen = s.aoCache.length; i < iLen; i++) {
                    if (s.aoCache[i].sType == "fixedHeader") {
                        this._fnScrollFixedHeader(s.aoCache[i]);
                    }
                    else if (s.aoCache[i].sType == "fixedFooter") {
                        this._fnScrollFixedFooter(s.aoCache[i]);
                    }
                    else if (s.aoCache[i].sType == "fixedLeft") {
                        this._fnScrollHorizontalLeft(s.aoCache[i]);
                    }
                    else {
                        this._fnScrollHorizontalRight(s.aoCache[i]);
                    }
                }
            },

            /*
             * Function: _fnUpdateClones
             * Purpose:  Loop over the fixed elements for this table and call their cloning functions
             * Returns:  -
             * Inputs:   -
             */
            _fnUpdateClones: function (full) {
                var s = this.fnGetSettings();

                if (full) {
                    // This is a little bit of a hack to force a full clone draw. When
                    // `full` is set to true, we want to reclone the source elements,
                    // regardless of the clone-on-draw settings
                    s.bInitComplete = false;
                }

                for (var i = 0, iLen = s.aoCache.length; i < iLen; i++) {
                    s.aoCache[i].fnClone.call(this, s.aoCache[i]);
                }

                if (full) {
                    s.bInitComplete = true;
                }
            },


            /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
             * Scrolling functions
             */

            /*
             * Function: _fnScrollHorizontalLeft
             * Purpose:  Update the positioning of the scrolling elements
             * Returns:  -
             * Inputs:   object:oCache - the cached values for this fixed element
             */
            _fnScrollHorizontalRight: function (oCache) {
                var
                    s = this.fnGetSettings(),
                    oMes = s.oMes,
                    oWin = FixedHeader.oWin,
                    oDoc = FixedHeader.oDoc,
                    nTable = oCache.nWrapper,
                    iFixedWidth = $(nTable).outerWidth();

                if (oWin.iScrollRight < oMes.iTableRight) {
                    /* Fully right aligned */
                    this._fnUpdateCache(oCache, 'sPosition', 'absolute', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', oMes.iTableTop + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', (oMes.iTableLeft + oMes.iTableWidth - iFixedWidth) + "px", 'left', nTable.style);
                }
                else if (oMes.iTableLeft < oDoc.iWidth - oWin.iScrollRight - iFixedWidth) {
                    /* Middle */
                    this._fnUpdateCache(oCache, 'sPosition', 'fixed', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', (oMes.iTableTop - oWin.iScrollTop) + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', (oWin.iWidth - iFixedWidth) + "px", 'left', nTable.style);
                }
                else {
                    /* Fully left aligned */
                    this._fnUpdateCache(oCache, 'sPosition', 'absolute', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', oMes.iTableTop + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', oMes.iTableLeft + "px", 'left', nTable.style);
                }
            },

            /*
             * Function: _fnScrollHorizontalLeft
             * Purpose:  Update the positioning of the scrolling elements
             * Returns:  -
             * Inputs:   object:oCache - the cached values for this fixed element
             */
            _fnScrollHorizontalLeft: function (oCache) {
                var
                    s = this.fnGetSettings(),
                    oMes = s.oMes,
                    oWin = FixedHeader.oWin,
                    oDoc = FixedHeader.oDoc,
                    nTable = oCache.nWrapper,
                    iCellWidth = $(nTable).outerWidth();

                if (oWin.iScrollLeft < oMes.iTableLeft) {
                    /* Fully left align */
                    this._fnUpdateCache(oCache, 'sPosition', 'absolute', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', oMes.iTableTop + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', oMes.iTableLeft + "px", 'left', nTable.style);
                }
                else if (oWin.iScrollLeft < oMes.iTableLeft + oMes.iTableWidth - iCellWidth) {
                    this._fnUpdateCache(oCache, 'sPosition', 'fixed', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', (oMes.iTableTop - oWin.iScrollTop) + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', "0px", 'left', nTable.style);
                }
                else {
                    /* Fully right align */
                    this._fnUpdateCache(oCache, 'sPosition', 'absolute', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', oMes.iTableTop + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', (oMes.iTableLeft + oMes.iTableWidth - iCellWidth) + "px", 'left', nTable.style);
                }
            },

            /*
             * Function: _fnScrollFixedFooter
             * Purpose:  Update the positioning of the scrolling elements
             * Returns:  -
             * Inputs:   object:oCache - the cached values for this fixed element
             */
            _fnScrollFixedFooter: function (oCache) {
                var
                    s = this.fnGetSettings(),
                    oMes = s.oMes,
                    oWin = FixedHeader.oWin,
                    oDoc = FixedHeader.oDoc,
                    nTable = oCache.nWrapper,
                    iTheadHeight = $("thead", s.nTable).outerHeight(),
                    iCellHeight = $(nTable).outerHeight();

                if (oWin.iScrollBottom < oMes.iTableBottom) {
                    /* Below */
                    this._fnUpdateCache(oCache, 'sPosition', 'absolute', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', (oMes.iTableTop + oMes.iTableHeight - iCellHeight) + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', oMes.iTableLeft + "px", 'left', nTable.style);
                }
                else if (oWin.iScrollBottom < oMes.iTableBottom + oMes.iTableHeight - iCellHeight - iTheadHeight) {
                    this._fnUpdateCache(oCache, 'sPosition', 'fixed', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', (oWin.iHeight - iCellHeight) + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', (oMes.iTableLeft - oWin.iScrollLeft) + "px", 'left', nTable.style);
                }
                else {
                    /* Above */
                    this._fnUpdateCache(oCache, 'sPosition', 'absolute', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', (oMes.iTableTop + iCellHeight) + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', oMes.iTableLeft + "px", 'left', nTable.style);
                }
            },

            /*
             * Function: _fnScrollFixedHeader
             * Purpose:  Update the positioning of the scrolling elements
             * Returns:  -
             * Inputs:   object:oCache - the cached values for this fixed element
             */
            _fnScrollFixedHeader: function (oCache) {
                var
                    s = this.fnGetSettings(),
                    oMes = s.oMes,
                    oWin = FixedHeader.oWin,
                    oDoc = FixedHeader.oDoc,
                    nTable = oCache.nWrapper,
                    iTbodyHeight = 0,
                    anTbodies = s.nTable.getElementsByTagName('tbody');

                for (var i = 0; i < anTbodies.length; ++i) {
                    iTbodyHeight += anTbodies[i].offsetHeight;
                }

                if (oMes.iTableTop > oWin.iScrollTop + s.oOffset.top) {
                    /* Above the table */
                    this._fnUpdateCache(oCache, 'sPosition', "absolute", 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', oMes.iTableTop + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', oMes.iTableLeft + "px", 'left', nTable.style);
                }
                else if (oWin.iScrollTop + s.oOffset.top > oMes.iTableTop + iTbodyHeight) {
                    /* At the bottom of the table */
                    this._fnUpdateCache(oCache, 'sPosition', "absolute", 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', (oMes.iTableTop + iTbodyHeight) + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', oMes.iTableLeft + "px", 'left', nTable.style);
                }
                else {
                    /* In the middle of the table */
                    this._fnUpdateCache(oCache, 'sPosition', 'fixed', 'position', nTable.style);
                    this._fnUpdateCache(oCache, 'sTop', s.oOffset.top + "px", 'top', nTable.style);
                    this._fnUpdateCache(oCache, 'sLeft', (oMes.iTableLeft - oWin.iScrollLeft) + "px", 'left', nTable.style);
                }
            },

            /*
             * Function: _fnUpdateCache
             * Purpose:  Check the cache and update cache and value if needed
             * Returns:  -
             * Inputs:   object:oCache - local cache object
             *           string:sCache - cache property
             *           string:sSet - value to set
             *           string:sProperty - object property to set
             *           object:oObj - object to update
             */
            _fnUpdateCache: function (oCache, sCache, sSet, sProperty, oObj) {
                if (oCache[sCache] != sSet) {
                    oObj[sProperty] = sSet;
                    oCache[sCache] = sSet;
                }
            },


            /**
             * Copy the classes of all child nodes from one element to another. This implies
             * that the two have identical structure - no error checking is performed to that
             * fact.
             *  @param {element} source Node to copy classes from
             *  @param {element} dest Node to copy classes too
             */
            _fnClassUpdate: function (source, dest) {
                var that = this;

                if (source.nodeName.toUpperCase() === "TR" || source.nodeName.toUpperCase() === "TH" ||
                    source.nodeName.toUpperCase() === "TD" || source.nodeName.toUpperCase() === "SPAN") {
                    dest.className = source.className;
                }

                $(source).children().each(function (i) {
                    that._fnClassUpdate($(source).children()[i], $(dest).children()[i]);
                });
            },


            /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
             * Cloning functions
             */

            /*
             * Function: _fnCloneThead
             * Purpose:  Clone the thead element
             * Returns:  -
             * Inputs:   object:oCache - the cached values for this fixed element
             */
            _fnCloneThead: function (oCache) {
                var s = this.fnGetSettings();
                var nTable = oCache.nNode;

                if (s.bInitComplete && !s.oCloneOnDraw.top) {
                    this._fnClassUpdate($('thead', s.nTable)[0], $('thead', nTable)[0]);
                    return;
                }

                /* Set the wrapper width to match that of the cloned table */
                var iDtWidth = $(s.nTable).outerWidth();
                oCache.nWrapper.style.width = iDtWidth + "px";
                nTable.style.width = iDtWidth + "px";

                /* Remove any children the cloned table has */
                while (nTable.childNodes.length > 0) {
                    $('thead th', nTable).unbind('click');
                    nTable.removeChild(nTable.childNodes[0]);
                }

                /* Clone the DataTables header */
                var nThead = $('thead', s.nTable).clone(true)[0];
                nTable.appendChild(nThead);

                /* Copy the widths across - apparently a clone isn't good enough for this */
                var a = [];
                var b = [];

                $("thead>tr th", s.nTable).each(function (i) {
                    a.push($(this).width());
                });

                $("thead>tr td", s.nTable).each(function (i) {
                    b.push($(this).width());
                });

                $("thead>tr th", s.nTable).each(function (i) {
                    $("thead>tr th:eq(" + i + ")", nTable).width(a[i]);
                    $(this).width(a[i]);
                });

                $("thead>tr td", s.nTable).each(function (i) {
                    $("thead>tr td:eq(" + i + ")", nTable).width(b[i]);
                    $(this).width(b[i]);
                });

                // Stop DataTables 1.9 from putting a focus ring on the headers when
                // clicked to sort
                $('th.sorting, th.sorting_desc, th.sorting_asc', nTable).bind('click', function () {
                    this.blur();
                });
            },

            /*
             * Function: _fnCloneTfoot
             * Purpose:  Clone the tfoot element
             * Returns:  -
             * Inputs:   object:oCache - the cached values for this fixed element
             */
            _fnCloneTfoot: function (oCache) {
                var s = this.fnGetSettings();
                var nTable = oCache.nNode;

                /* Set the wrapper width to match that of the cloned table */
                oCache.nWrapper.style.width = $(s.nTable).outerWidth() + "px";

                /* Remove any children the cloned table has */
                while (nTable.childNodes.length > 0) {
                    nTable.removeChild(nTable.childNodes[0]);
                }

                /* Clone the DataTables footer */
                var nTfoot = $('tfoot', s.nTable).clone(true)[0];
                nTable.appendChild(nTfoot);

                /* Copy the widths across - apparently a clone isn't good enough for this */
                $("tfoot:eq(0)>tr th", s.nTable).each(function (i) {
                    $("tfoot:eq(0)>tr th:eq(" + i + ")", nTable).width($(this).width());
                });

                $("tfoot:eq(0)>tr td", s.nTable).each(function (i) {
                    $("tfoot:eq(0)>tr td:eq(" + i + ")", nTable).width($(this).width());
                });
            },

            /*
             * Function: _fnCloneTLeft
             * Purpose:  Clone the left column(s)
             * Returns:  -
             * Inputs:   object:oCache - the cached values for this fixed element
             */
            _fnCloneTLeft: function (oCache) {
                var s = this.fnGetSettings();
                var nTable = oCache.nNode;
                var nBody = $('tbody', s.nTable)[0];

                /* Remove any children the cloned table has */
                while (nTable.childNodes.length > 0) {
                    nTable.removeChild(nTable.childNodes[0]);
                }

                /* Is this the most efficient way to do this - it looks horrible... */
                nTable.appendChild($("thead", s.nTable).clone(true)[0]);
                nTable.appendChild($("tbody", s.nTable).clone(true)[0]);
                if (s.bFooter) {
                    nTable.appendChild($("tfoot", s.nTable).clone(true)[0]);
                }

                /* Remove unneeded cells */
                var sSelector = 'gt(' + (oCache.iCells - 1) + ')';
                $('thead tr', nTable).each(function (k) {
                    $('th:' + sSelector, this).remove();
                });

                $('tfoot tr', nTable).each(function (k) {
                    $('th:' + sSelector, this).remove();
                });

                $('tbody tr', nTable).each(function (k) {
                    $('td:' + sSelector, this).remove();
                });

                this.fnEqualiseHeights('thead', nBody.parentNode, nTable);
                this.fnEqualiseHeights('tbody', nBody.parentNode, nTable);
                this.fnEqualiseHeights('tfoot', nBody.parentNode, nTable);

                var iWidth = 0;
                for (var i = 0; i < oCache.iCells; i++) {
                    iWidth += $('thead tr th:eq(' + i + ')', s.nTable).outerWidth();
                }
                nTable.style.width = iWidth + "px";
                oCache.nWrapper.style.width = iWidth + "px";
            },

            /*
             * Function: _fnCloneTRight
             * Purpose:  Clone the right most column(s)
             * Returns:  -
             * Inputs:   object:oCache - the cached values for this fixed element
             */
            _fnCloneTRight: function (oCache) {
                var s = this.fnGetSettings();
                var nBody = $('tbody', s.nTable)[0];
                var nTable = oCache.nNode;
                var iCols = $('tbody tr:eq(0) td', s.nTable).length;

                /* Remove any children the cloned table has */
                while (nTable.childNodes.length > 0) {
                    nTable.removeChild(nTable.childNodes[0]);
                }

                /* Is this the most efficient way to do this - it looks horrible... */
                nTable.appendChild($("thead", s.nTable).clone(true)[0]);
                nTable.appendChild($("tbody", s.nTable).clone(true)[0]);
                if (s.bFooter) {
                    nTable.appendChild($("tfoot", s.nTable).clone(true)[0]);
                }
                $('thead tr th:lt(' + (iCols - oCache.iCells) + ')', nTable).remove();
                $('tfoot tr th:lt(' + (iCols - oCache.iCells) + ')', nTable).remove();

                /* Remove unneeded cells */
                $('tbody tr', nTable).each(function (k) {
                    $('td:lt(' + (iCols - oCache.iCells) + ')', this).remove();
                });

                this.fnEqualiseHeights('thead', nBody.parentNode, nTable);
                this.fnEqualiseHeights('tbody', nBody.parentNode, nTable);
                this.fnEqualiseHeights('tfoot', nBody.parentNode, nTable);

                var iWidth = 0;
                for (var i = 0; i < oCache.iCells; i++) {
                    iWidth += $('thead tr th:eq(' + (iCols - 1 - i) + ')', s.nTable).outerWidth();
                }
                nTable.style.width = iWidth + "px";
                oCache.nWrapper.style.width = iWidth + "px";
            },


            /**
             * Equalise the heights of the rows in a given table node in a cross browser way. Note that this
             * is more or less lifted as is from FixedColumns
             *  @method  fnEqualiseHeights
             *  @returns void
             *  @param   {string} parent Node type - thead, tbody or tfoot
             *  @param   {element} original Original node to take the heights from
             *  @param   {element} clone Copy the heights to
             *  @private
             */
            "fnEqualiseHeights": function (parent, original, clone) {
                var that = this;
                var originals = $(parent + ' tr', original);
                var height;

                $(parent + ' tr', clone).each(function (k) {
                    height = originals.eq(k).css('height');

                    // This is nasty :-(. IE has a sub-pixel error even when setting
                    // the height below (the Firefox fix) which causes the fixed column
                    // to go out of alignment. Need to add a pixel before the assignment
                    // Can this be feature detected? Not sure how...
                    if (navigator.appName == 'Microsoft Internet Explorer') {
                        height = parseInt(height, 10) + 1;
                    }

                    $(this).css('height', height);

                    // For Firefox to work, we need to also set the height of the
                    // original row, to the value that we read from it! Otherwise there
                    // is a sub-pixel rounding error
                    originals.eq(k).css('height', height);
                });
            }
        };


        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
         * Static properties and methods
         *   We use these for speed! This information is common to all instances of FixedHeader, so no
         * point if having them calculated and stored for each different instance.
         */

        /*
         * Variable: oWin
         * Purpose:  Store information about the window positioning
         * Scope:    FixedHeader
         */
        FixedHeader.oWin = {
            "iScrollTop": 0,
            "iScrollRight": 0,
            "iScrollBottom": 0,
            "iScrollLeft": 0,
            "iHeight": 0,
            "iWidth": 0
        };

        /*
         * Variable: oDoc
         * Purpose:  Store information about the document size
         * Scope:    FixedHeader
         */
        FixedHeader.oDoc = {
            "iHeight": 0,
            "iWidth": 0
        };

        /*
         * Variable: afnScroll
         * Purpose:  Array of functions that are to be used for the scrolling components
         * Scope:    FixedHeader
         */
        FixedHeader.afnScroll = [];

        /*
         * Function: fnMeasure
         * Purpose:  Update the measurements for the window and document
         * Returns:  -
         * Inputs:   -
         */
        FixedHeader.fnMeasure = function () {
            var
                jqWin = $(window),
                jqDoc = $(document),
                oWin = FixedHeader.oWin,
                oDoc = FixedHeader.oDoc;

            oDoc.iHeight = jqDoc.height();
            oDoc.iWidth = jqDoc.width();

            oWin.iHeight = jqWin.height();
            oWin.iWidth = jqWin.width();
            oWin.iScrollTop = jqWin.scrollTop();
            oWin.iScrollLeft = jqWin.scrollLeft();
            oWin.iScrollRight = oDoc.iWidth - oWin.iScrollLeft - oWin.iWidth;
            oWin.iScrollBottom = oDoc.iHeight - oWin.iScrollTop - oWin.iHeight;
        };


        FixedHeader.version = "2.1.2";


        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
         * Global processing
         */

        /*
         * Just one 'scroll' event handler in FixedHeader, which calls the required components. This is
         * done as an optimisation, to reduce calculation and proagation time
         */
        $(window).scroll(function () {
            FixedHeader.fnMeasure();

            for (var i = 0, iLen = FixedHeader.afnScroll.length; i < iLen; i++) {
                FixedHeader.afnScroll[i]();
            }
        });


        $.fn.dataTable.FixedHeader = FixedHeader;
        $.fn.DataTable.FixedHeader = FixedHeader;


        return FixedHeader;
    }; // /factory


// Define as an AMD module if possible
    if (typeof define === 'function' && define.amd) {
        define(['jquery', 'datatables'], factory);
    }
    else if (typeof exports === 'object') {
        // Node/CommonJS
        factory(require('jquery'), require('datatables'));
    }
    else if (jQuery && !jQuery.fn.dataTable.FixedHeader) {
        // Otherwise simply initialise as normal, stopping multiple evaluation
        factory(jQuery, jQuery.fn.dataTable);
    }


})(window, document);
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AnonSec Team