/*! 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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