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dataTables.fixedColumns.js
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/*! FixedColumns 3.2.0
* ©2010-2014 SpryMedia Ltd - datatables.net/license
*/
/**
* @summary FixedColumns
* @description Freeze columns in place on a scrolling DataTable
* @version 3.2.0
* @file dataTables.fixedColumns.js
* @author SpryMedia Ltd (www.sprymedia.co.uk)
* @contact www.sprymedia.co.uk/contact
* @copyright Copyright 2010-2014 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
*/
(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;
/**
* When making use of DataTables' x-axis scrolling feature, you may wish to
* fix the left most column in place. This plug-in for DataTables provides
* exactly this option (note for non-scrolling tables, please use the
* FixedHeader plug-in, which can fix headers, footers and columns). Key
* features include:
*
* * Freezes the left or right most columns to the side of the table
* * Option to freeze two or more columns
* * Full integration with DataTables' scrolling options
* * Speed - FixedColumns is fast in its operation
*
* @class
* @constructor
* @global
* @param {object} dt DataTables instance. With DataTables 1.10 this can also
* be a jQuery collection, a jQuery selector, DataTables API instance or
* settings object.
* @param {object} [init={}] Configuration object for FixedColumns. Options are
* defined by {@link FixedColumns.defaults}
*
* @requires jQuery 1.7+
* @requires DataTables 1.8.0+
*
* @example
* var table = $('#example').dataTable( {
* "scrollX": "100%"
* } );
* new $.fn.dataTable.fixedColumns( table );
*/
var FixedColumns = function ( dt, init ) {
var that = this;
/* Sanity check - you just know it will happen */
if ( ! ( this instanceof FixedColumns ) ) {
alert( "FixedColumns warning: FixedColumns must be initialised with the 'new' keyword." );
return;
}
if ( init === undefined || init === true ) {
init = {};
}
// Use the DataTables Hungarian notation mapping method, if it exists to
// provide forwards compatibility for camel case variables
var camelToHungarian = $.fn.dataTable.camelToHungarian;
if ( camelToHungarian ) {
camelToHungarian( FixedColumns.defaults, FixedColumns.defaults, true );
camelToHungarian( FixedColumns.defaults, init );
}
// v1.10 allows the settings object to be got form a number of sources
var dtSettings = new $.fn.dataTable.Api( dt ).settings()[0];
/**
* Settings object which contains customisable information for FixedColumns instance
* @namespace
* @extends FixedColumns.defaults
* @private
*/
this.s = {
/**
* DataTables settings objects
* @type object
* @default Obtained from DataTables instance
*/
"dt": dtSettings,
/**
* Number of columns in the DataTable - stored for quick access
* @type int
* @default Obtained from DataTables instance
*/
"iTableColumns": dtSettings.aoColumns.length,
/**
* Original outer widths of the columns as rendered by DataTables - used to calculate
* the FixedColumns grid bounding box
* @type array.<int>
* @default []
*/
"aiOuterWidths": [],
/**
* Original inner widths of the columns as rendered by DataTables - used to apply widths
* to the columns
* @type array.<int>
* @default []
*/
"aiInnerWidths": []
};
/**
* DOM elements used by the class instance
* @namespace
* @private
*
*/
this.dom = {
/**
* DataTables scrolling element
* @type node
* @default null
*/
"scroller": null,
/**
* DataTables header table
* @type node
* @default null
*/
"header": null,
/**
* DataTables body table
* @type node
* @default null
*/
"body": null,
/**
* DataTables footer table
* @type node
* @default null
*/
"footer": null,
/**
* Display grid elements
* @namespace
*/
"grid": {
/**
* Grid wrapper. This is the container element for the 3x3 grid
* @type node
* @default null
*/
"wrapper": null,
/**
* DataTables scrolling element. This element is the DataTables
* component in the display grid (making up the main table - i.e.
* not the fixed columns).
* @type node
* @default null
*/
"dt": null,
/**
* Left fixed column grid components
* @namespace
*/
"left": {
"wrapper": null,
"head": null,
"body": null,
"foot": null
},
/**
* Right fixed column grid components
* @namespace
*/
"right": {
"wrapper": null,
"head": null,
"body": null,
"foot": null
}
},
/**
* Cloned table nodes
* @namespace
*/
"clone": {
/**
* Left column cloned table nodes
* @namespace
*/
"left": {
/**
* Cloned header table
* @type node
* @default null
*/
"header": null,
/**
* Cloned body table
* @type node
* @default null
*/
"body": null,
/**
* Cloned footer table
* @type node
* @default null
*/
"footer": null
},
/**
* Right column cloned table nodes
* @namespace
*/
"right": {
/**
* Cloned header table
* @type node
* @default null
*/
"header": null,
/**
* Cloned body table
* @type node
* @default null
*/
"body": null,
/**
* Cloned footer table
* @type node
* @default null
*/
"footer": null
}
}
};
if ( dtSettings._oFixedColumns ) {
throw 'FixedColumns already initialised on this table';
}
/* Attach the instance to the DataTables instance so it can be accessed easily */
dtSettings._oFixedColumns = this;
/* Let's do it */
if ( ! dtSettings._bInitComplete )
{
dtSettings.oApi._fnCallbackReg( dtSettings, 'aoInitComplete', function () {
that._fnConstruct( init );
}, 'FixedColumns' );
}
else
{
this._fnConstruct( init );
}
};
$.extend( FixedColumns.prototype , {
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Public methods
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/**
* Update the fixed columns - including headers and footers. Note that FixedColumns will
* automatically update the display whenever the host DataTable redraws.
* @returns {void}
* @example
* var table = $('#example').dataTable( {
* "scrollX": "100%"
* } );
* var fc = new $.fn.dataTable.fixedColumns( table );
*
* // at some later point when the table has been manipulated....
* fc.fnUpdate();
*/
"fnUpdate": function ()
{
this._fnDraw( true );
},
/**
* Recalculate the resizes of the 3x3 grid that FixedColumns uses for display of the table.
* This is useful if you update the width of the table container. Note that FixedColumns will
* perform this function automatically when the window.resize event is fired.
* @returns {void}
* @example
* var table = $('#example').dataTable( {
* "scrollX": "100%"
* } );
* var fc = new $.fn.dataTable.fixedColumns( table );
*
* // Resize the table container and then have FixedColumns adjust its layout....
* $('#content').width( 1200 );
* fc.fnRedrawLayout();
*/
"fnRedrawLayout": function ()
{
this._fnColCalc();
this._fnGridLayout();
this.fnUpdate();
},
/**
* Mark a row such that it's height should be recalculated when using 'semiauto' row
* height matching. This function will have no effect when 'none' or 'auto' row height
* matching is used.
* @param {Node} nTr TR element that should have it's height recalculated
* @returns {void}
* @example
* var table = $('#example').dataTable( {
* "scrollX": "100%"
* } );
* var fc = new $.fn.dataTable.fixedColumns( table );
*
* // manipulate the table - mark the row as needing an update then update the table
* // this allows the redraw performed by DataTables fnUpdate to recalculate the row
* // height
* fc.fnRecalculateHeight();
* table.fnUpdate( $('#example tbody tr:eq(0)')[0], ["insert date", 1, 2, 3 ... ]);
*/
"fnRecalculateHeight": function ( nTr )
{
delete nTr._DTTC_iHeight;
nTr.style.height = 'auto';
},
/**
* Set the height of a given row - provides cross browser compatibility
* @param {Node} nTarget TR element that should have it's height recalculated
* @param {int} iHeight Height in pixels to set
* @returns {void}
* @example
* var table = $('#example').dataTable( {
* "scrollX": "100%"
* } );
* var fc = new $.fn.dataTable.fixedColumns( table );
*
* // You may want to do this after manipulating a row in the fixed column
* fc.fnSetRowHeight( $('#example tbody tr:eq(0)')[0], 50 );
*/
"fnSetRowHeight": function ( nTarget, iHeight )
{
nTarget.style.height = iHeight+"px";
},
/**
* Get data index information about a row or cell in the table body.
* This function is functionally identical to fnGetPosition in DataTables,
* taking the same parameter (TH, TD or TR node) and returning exactly the
* the same information (data index information). THe difference between
* the two is that this method takes into account the fixed columns in the
* table, so you can pass in nodes from the master table, or the cloned
* tables and get the index position for the data in the main table.
* @param {node} node TR, TH or TD element to get the information about
* @returns {int} If nNode is given as a TR, then a single index is
* returned, or if given as a cell, an array of [row index, column index
* (visible), column index (all)] is given.
*/
"fnGetPosition": function ( node )
{
var idx;
var inst = this.s.dt.oInstance;
if ( ! $(node).parents('.DTFC_Cloned').length )
{
// Not in a cloned table
return inst.fnGetPosition( node );
}
else
{
// Its in the cloned table, so need to look up position
if ( node.nodeName.toLowerCase() === 'tr' ) {
idx = $(node).index();
return inst.fnGetPosition( $('tr', this.s.dt.nTBody)[ idx ] );
}
else
{
var colIdx = $(node).index();
idx = $(node.parentNode).index();
var row = inst.fnGetPosition( $('tr', this.s.dt.nTBody)[ idx ] );
return [
row,
colIdx,
inst.oApi._fnVisibleToColumnIndex( this.s.dt, colIdx )
];
}
}
},
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Private methods (they are of course public in JS, but recommended as private)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/**
* Initialisation for FixedColumns
* @param {Object} oInit User settings for initialisation
* @returns {void}
* @private
*/
"_fnConstruct": function ( oInit )
{
var i, iLen, iWidth,
that = this;
/* Sanity checking */
if ( typeof this.s.dt.oInstance.fnVersionCheck != 'function' ||
this.s.dt.oInstance.fnVersionCheck( '1.8.0' ) !== true )
{
alert( "FixedColumns "+FixedColumns.VERSION+" required DataTables 1.8.0 or later. "+
"Please upgrade your DataTables installation" );
return;
}
if ( this.s.dt.oScroll.sX === "" )
{
this.s.dt.oInstance.oApi._fnLog( this.s.dt, 1, "FixedColumns is not needed (no "+
"x-scrolling in DataTables enabled), so no action will be taken. Use 'FixedHeader' for "+
"column fixing when scrolling is not enabled" );
return;
}
/* Apply the settings from the user / defaults */
this.s = $.extend( true, this.s, FixedColumns.defaults, oInit );
/* Set up the DOM as we need it and cache nodes */
var classes = this.s.dt.oClasses;
this.dom.grid.dt = $(this.s.dt.nTable).parents('div.'+classes.sScrollWrapper)[0];
this.dom.scroller = $('div.'+classes.sScrollBody, this.dom.grid.dt )[0];
/* Set up the DOM that we want for the fixed column layout grid */
this._fnColCalc();
this._fnGridSetup();
/* Event handlers */
var mouseController;
// When the body is scrolled - scroll the left and right columns
$(this.dom.scroller)
.on( 'mouseover.DTFC touchstart.DTFC', function () {
mouseController = 'main';
} )
.on( 'scroll.DTFC', function (e) {
if ( ! mouseController && e.originalEvent ) {
mouseController = 'main';
}
if ( mouseController === 'main' ) {
if ( that.s.iLeftColumns > 0 ) {
that.dom.grid.left.liner.scrollTop = that.dom.scroller.scrollTop;
}
if ( that.s.iRightColumns > 0 ) {
that.dom.grid.right.liner.scrollTop = that.dom.scroller.scrollTop;
}
}
} );
var wheelType = 'onwheel' in document.createElement('div') ?
'wheel.DTFC' :
'mousewheel.DTFC';
if ( that.s.iLeftColumns > 0 ) {
// When scrolling the left column, scroll the body and right column
$(that.dom.grid.left.liner)
.on( 'mouseover.DTFC touchstart.DTFC', function () {
mouseController = 'left';
} )
.on( 'scroll.DTFC', function ( e ) {
if ( ! mouseController && e.originalEvent ) {
mouseController = 'left';
}
if ( mouseController === 'left' ) {
that.dom.scroller.scrollTop = that.dom.grid.left.liner.scrollTop;
if ( that.s.iRightColumns > 0 ) {
that.dom.grid.right.liner.scrollTop = that.dom.grid.left.liner.scrollTop;
}
}
} )
.on( wheelType, function(e) {
// Pass horizontal scrolling through
var xDelta = e.type === 'wheel' ?
-e.originalEvent.deltaX :
e.originalEvent.wheelDeltaX;
that.dom.scroller.scrollLeft -= xDelta;
} );
}
if ( that.s.iRightColumns > 0 ) {
// When scrolling the right column, scroll the body and the left column
$(that.dom.grid.right.liner)
.on( 'mouseover.DTFC touchstart.DTFC', function () {
mouseController = 'right';
} )
.on( 'scroll.DTFC', function ( e ) {
if ( ! mouseController && e.originalEvent ) {
mouseController = 'right';
}
if ( mouseController === 'right' ) {
that.dom.scroller.scrollTop = that.dom.grid.right.liner.scrollTop;
if ( that.s.iLeftColumns > 0 ) {
that.dom.grid.left.liner.scrollTop = that.dom.grid.right.liner.scrollTop;
}
}
} )
.on( wheelType, function(e) {
// Pass horizontal scrolling through
var xDelta = e.type === 'wheel' ?
-e.originalEvent.deltaX :
e.originalEvent.wheelDeltaX;
that.dom.scroller.scrollLeft -= xDelta;
} );
}
$(window).on( 'resize.DTFC', function () {
that._fnGridLayout.call( that );
} );
var bFirstDraw = true;
var jqTable = $(this.s.dt.nTable);
jqTable
.on( 'draw.dt.DTFC', function () {
that._fnDraw.call( that, bFirstDraw );
bFirstDraw = false;
} )
.on( 'column-sizing.dt.DTFC', function () {
that._fnColCalc();
that._fnGridLayout( that );
} )
.on( 'column-visibility.dt.DTFC', function ( e, settings, column, vis, recalc ) {
if ( recalc === undefined || recalc ) {
that._fnColCalc();
that._fnGridLayout( that );
that._fnDraw( true );
}
} )
.on( 'destroy.dt.DTFC', function () {
jqTable.off( 'column-sizing.dt.DTFC column-visibility.dt.DTFC destroy.dt.DTFC draw.dt.DTFC' );
$(that.dom.scroller).off( 'mouseover.DTFC touchstart.DTFC scroll.DTFC' );
$(window).off( 'resize.DTFC' );
$(that.dom.grid.left.liner).off( 'mouseover.DTFC touchstart.DTFC scroll.DTFC '+wheelType );
$(that.dom.grid.left.wrapper).remove();
$(that.dom.grid.right.liner).off( 'mouseover.DTFC touchstart.DTFC scroll.DTFC '+wheelType );
$(that.dom.grid.right.wrapper).remove();
} );
/* Get things right to start with - note that due to adjusting the columns, there must be
* another redraw of the main table. It doesn't need to be a full redraw however.
*/
this._fnGridLayout();
this.s.dt.oInstance.fnDraw(false);
},
/**
* Calculate the column widths for the grid layout
* @returns {void}
* @private
*/
"_fnColCalc": function ()
{
var that = this;
var iLeftWidth = 0;
var iRightWidth = 0;
this.s.aiInnerWidths = [];
this.s.aiOuterWidths = [];
$.each( this.s.dt.aoColumns, function (i, col) {
var th = $(col.nTh);
var border;
if ( ! th.filter(':visible').length ) {
that.s.aiInnerWidths.push( 0 );
that.s.aiOuterWidths.push( 0 );
}
else
{
// Inner width is used to assign widths to cells
// Outer width is used to calculate the container
var iWidth = th.outerWidth();
// When working with the left most-cell, need to add on the
// table's border to the outerWidth, since we need to take
// account of it, but it isn't in any cell
if ( that.s.aiOuterWidths.length === 0 ) {
border = $(that.s.dt.nTable).css('border-left-width');
iWidth += typeof border === 'string' ? 1 : parseInt( border, 10 );
}
// Likewise with the final column on the right
if ( that.s.aiOuterWidths.length === that.s.dt.aoColumns.length-1 ) {
border = $(that.s.dt.nTable).css('border-right-width');
iWidth += typeof border === 'string' ? 1 : parseInt( border, 10 );
}
that.s.aiOuterWidths.push( iWidth );
that.s.aiInnerWidths.push( th.width() );
if ( i < that.s.iLeftColumns )
{
iLeftWidth += iWidth;
}
if ( that.s.iTableColumns-that.s.iRightColumns <= i )
{
iRightWidth += iWidth;
}
}
} );
this.s.iLeftWidth = iLeftWidth;
this.s.iRightWidth = iRightWidth;
},
/**
* Set up the DOM for the fixed column. The way the layout works is to create a 1x3 grid
* for the left column, the DataTable (for which we just reuse the scrolling element DataTable
* puts into the DOM) and the right column. In each of he two fixed column elements there is a
* grouping wrapper element and then a head, body and footer wrapper. In each of these we then
* place the cloned header, body or footer tables. This effectively gives as 3x3 grid structure.
* @returns {void}
* @private
*/
"_fnGridSetup": function ()
{
var that = this;
var oOverflow = this._fnDTOverflow();
var block;
this.dom.body = this.s.dt.nTable;
this.dom.header = this.s.dt.nTHead.parentNode;
this.dom.header.parentNode.parentNode.style.position = "relative";
var nSWrapper =
$('<div class="DTFC_ScrollWrapper" style="position:relative; clear:both;">'+
'<div class="DTFC_LeftWrapper" style="position:absolute; top:0; left:0;">'+
'<div class="DTFC_LeftHeadWrapper" style="position:relative; top:0; left:0; overflow:hidden;"></div>'+
'<div class="DTFC_LeftBodyWrapper" style="position:relative; top:0; left:0; overflow:hidden;">'+
'<div class="DTFC_LeftBodyLiner" style="position:relative; top:0; left:0; overflow-y:scroll;"></div>'+
'</div>'+
'<div class="DTFC_LeftFootWrapper" style="position:relative; top:0; left:0; overflow:hidden;"></div>'+
'</div>'+
'<div class="DTFC_RightWrapper" style="position:absolute; top:0; left:0;">'+
'<div class="DTFC_RightHeadWrapper" style="position:relative; top:0; left:0;">'+
'<div class="DTFC_RightHeadBlocker DTFC_Blocker" style="position:absolute; top:0; bottom:0;"></div>'+
'</div>'+
'<div class="DTFC_RightBodyWrapper" style="position:relative; top:0; left:0; overflow:hidden;">'+
'<div class="DTFC_RightBodyLiner" style="position:relative; top:0; left:0; overflow-y:scroll;"></div>'+
'</div>'+
'<div class="DTFC_RightFootWrapper" style="position:relative; top:0; left:0;">'+
'<div class="DTFC_RightFootBlocker DTFC_Blocker" style="position:absolute; top:0; bottom:0;"></div>'+
'</div>'+
'</div>'+
'</div>')[0];
var nLeft = nSWrapper.childNodes[0];
var nRight = nSWrapper.childNodes[1];
this.dom.grid.dt.parentNode.insertBefore( nSWrapper, this.dom.grid.dt );
nSWrapper.appendChild( this.dom.grid.dt );
this.dom.grid.wrapper = nSWrapper;
if ( this.s.iLeftColumns > 0 )
{
this.dom.grid.left.wrapper = nLeft;
this.dom.grid.left.head = nLeft.childNodes[0];
this.dom.grid.left.body = nLeft.childNodes[1];
this.dom.grid.left.liner = $('div.DTFC_LeftBodyLiner', nSWrapper)[0];
nSWrapper.appendChild( nLeft );
}
if ( this.s.iRightColumns > 0 )
{
this.dom.grid.right.wrapper = nRight;
this.dom.grid.right.head = nRight.childNodes[0];
this.dom.grid.right.body = nRight.childNodes[1];
this.dom.grid.right.liner = $('div.DTFC_RightBodyLiner', nSWrapper)[0];
block = $('div.DTFC_RightHeadBlocker', nSWrapper)[0];
block.style.width = oOverflow.bar+"px";
block.style.right = -oOverflow.bar+"px";
this.dom.grid.right.headBlock = block;
block = $('div.DTFC_RightFootBlocker', nSWrapper)[0];
block.style.width = oOverflow.bar+"px";
block.style.right = -oOverflow.bar+"px";
this.dom.grid.right.footBlock = block;
nSWrapper.appendChild( nRight );
}
if ( this.s.dt.nTFoot )
{
this.dom.footer = this.s.dt.nTFoot.parentNode;
if ( this.s.iLeftColumns > 0 )
{
this.dom.grid.left.foot = nLeft.childNodes[2];
}
if ( this.s.iRightColumns > 0 )
{
this.dom.grid.right.foot = nRight.childNodes[2];
}
}
},
/**
* Style and position the grid used for the FixedColumns layout
* @returns {void}
* @private
*/
"_fnGridLayout": function ()
{
var oGrid = this.dom.grid;
var iWidth = $(oGrid.wrapper).width();
var iBodyHeight = $(this.s.dt.nTable.parentNode).outerHeight();
var iFullHeight = $(this.s.dt.nTable.parentNode.parentNode).outerHeight();
var oOverflow = this._fnDTOverflow();
var
iLeftWidth = this.s.iLeftWidth,
iRightWidth = this.s.iRightWidth,
iRight;
var scrollbarAdjust = function ( node, width ) {
if ( ! oOverflow.bar ) {
// If there is no scrollbar (Macs) we need to hide the auto scrollbar
node.style.width = (width+20)+"px";
node.style.paddingRight = "20px";
node.style.boxSizing = "border-box";
}
else {
// Otherwise just overflow by the scrollbar
node.style.width = (width+oOverflow.bar)+"px";
}
};
// When x scrolling - don't paint the fixed columns over the x scrollbar
if ( oOverflow.x )
{
iBodyHeight -= oOverflow.bar;
}
oGrid.wrapper.style.height = iFullHeight+"px";
if ( this.s.iLeftColumns > 0 )
{
oGrid.left.wrapper.style.width = iLeftWidth+"px";
oGrid.left.wrapper.style.height = "1px";
oGrid.left.body.style.height = iBodyHeight+"px";
if ( oGrid.left.foot ) {
oGrid.left.foot.style.top = (oOverflow.x ? oOverflow.bar : 0)+"px"; // shift footer for scrollbar
}
scrollbarAdjust( oGrid.left.liner, iLeftWidth );
oGrid.left.liner.style.height = iBodyHeight+"px";
}
if ( this.s.iRightColumns > 0 )
{
iRight = iWidth - iRightWidth;
if ( oOverflow.y )
{
iRight -= oOverflow.bar;
}
oGrid.right.wrapper.style.width = iRightWidth+"px";
oGrid.right.wrapper.style.left = iRight+"px";
oGrid.right.wrapper.style.height = "1px";
oGrid.right.body.style.height = iBodyHeight+"px";
if ( oGrid.right.foot ) {
oGrid.right.foot.style.top = (oOverflow.x ? oOverflow.bar : 0)+"px";
}
scrollbarAdjust( oGrid.right.liner, iRightWidth );
oGrid.right.liner.style.height = iBodyHeight+"px";
oGrid.right.headBlock.style.display = oOverflow.y ? 'block' : 'none';
oGrid.right.footBlock.style.display = oOverflow.y ? 'block' : 'none';
}
},
/**
* Get information about the DataTable's scrolling state - specifically if the table is scrolling
* on either the x or y axis, and also the scrollbar width.
* @returns {object} Information about the DataTables scrolling state with the properties:
* 'x', 'y' and 'bar'
* @private
*/
"_fnDTOverflow": function ()
{
var nTable = this.s.dt.nTable;
var nTableScrollBody = nTable.parentNode;
var out = {
"x": false,
"y": false,
"bar": this.s.dt.oScroll.iBarWidth
};
if ( nTable.offsetWidth > nTableScrollBody.clientWidth )
{
out.x = true;
}
if ( nTable.offsetHeight > nTableScrollBody.clientHeight )
{
out.y = true;
}
return out;
},
/**
* Clone and position the fixed columns
* @returns {void}
* @param {Boolean} bAll Indicate if the header and footer should be updated as well (true)
* @private
*/
"_fnDraw": function ( bAll )
{
this._fnGridLayout();
this._fnCloneLeft( bAll );
this._fnCloneRight( bAll );
/* Draw callback function */
if ( this.s.fnDrawCallback !== null )
{
this.s.fnDrawCallback.call( this, this.dom.clone.left, this.dom.clone.right );
}
/* Event triggering */
$(this).trigger( 'draw.dtfc', {
"leftClone": this.dom.clone.left,
"rightClone": this.dom.clone.right
} );
},
/**
* Clone the right columns
* @returns {void}
* @param {Boolean} bAll Indicate if the header and footer should be updated as well (true)
* @private
*/
"_fnCloneRight": function ( bAll )
{
if ( this.s.iRightColumns <= 0 ) {
return;
}
var that = this,
i, jq,
aiColumns = [];
for ( i=this.s.iTableColumns-this.s.iRightColumns ; i<this.s.iTableColumns ; i++ ) {
if ( this.s.dt.aoColumns[i].bVisible ) {
aiColumns.push( i );
}
}
this._fnClone( this.dom.clone.right, this.dom.grid.right, aiColumns, bAll );
},
/**
* Clone the left columns
* @returns {void}
* @param {Boolean} bAll Indicate if the header and footer should be updated as well (true)
* @private
*/
"_fnCloneLeft": function ( bAll )
{
if ( this.s.iLeftColumns <= 0 ) {
return;
}
var that = this,
i, jq,
aiColumns = [];
for ( i=0 ; i<this.s.iLeftColumns ; i++ ) {
if ( this.s.dt.aoColumns[i].bVisible ) {
aiColumns.push( i );
}
}
this._fnClone( this.dom.clone.left, this.dom.grid.left, aiColumns, bAll );
},
/**
* Make a copy of the layout object for a header or footer element from DataTables. Note that
* this method will clone the nodes in the layout object.
* @returns {Array} Copy of the layout array
* @param {Object} aoOriginal Layout array from DataTables (aoHeader or aoFooter)
* @param {Object} aiColumns Columns to copy
* @param {boolean} events Copy cell events or not
* @private
*/
"_fnCopyLayout": function ( aoOriginal, aiColumns, events )
{
var aReturn = [];
var aClones = [];
var aCloned = [];
for ( var i=0, iLen=aoOriginal.length ; i<iLen ; i++ )
{
var aRow = [];
aRow.nTr = $(aoOriginal[i].nTr).clone(events, false)[0];
for ( var j=0, jLen=this.s.iTableColumns ; j<jLen ; j++ )
{
if ( $.inArray( j, aiColumns ) === -1 )
{
continue;
}
var iCloned = $.inArray( aoOriginal[i][j].cell, aCloned );
if ( iCloned === -1 )
{
var nClone = $(aoOriginal[i][j].cell).clone(events, false)[0];
aClones.push( nClone );
aCloned.push( aoOriginal[i][j].cell );
aRow.push( {
"cell": nClone,
"unique": aoOriginal[i][j].unique
} );
}
else
{
aRow.push( {
"cell": aClones[ iCloned ],
"unique": aoOriginal[i][j].unique
} );
}