/*
 * File:        TableTools.js
 * Version:     2.0.0
 * Description: Tools and buttons for DataTables
 * Author:      Allan Jardine (www.sprymedia.co.uk)
 * Language:    Javascript
 * License:     LGPL / 3 point BSD
 * Project:     DataTables
 *
 * Copyright 2009-2010 Allan Jardine, all rights reserved.
 */

/* Global scope for TableTools */
var TableTools;

(function($, window, document) {

/** 
 * TableTools provides flexible buttons and other tools for a DataTables enhanced table
 * @class TableTools
 * @constructor
 * @param {Object} oDT DataTables instance
 * @param {Object} oOpts TableTools options
 * @param {String} oOpts.sSwfPath ZeroClipboard SWF path
 * @param {String} oOpts.sRowSelect Row selection options - 'none', 'single' or 'multi'
 * @param {Function} oOpts.fnPreRowSelect Callback function just prior to row selection
 * @param {Function} oOpts.fnRowSelected Callback function just after row selection
 * @param {Function} oOpts.fnRowDeselected Callback function when row is deselected
 * @param {Array} oOpts.aButtons List of buttons to be used
 */
TableTools = function( oDT, oOpts )
{
	/* Santiy check that we are a new instance */
	if ( !this.CLASS || this.CLASS != "TableTools" )
	{
		alert( "Warning: TableTools must be initialised with the keyword 'new'" );
	}
	
	
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Public class variables
	 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
	
	/**
	 * @namespace Settings object which contains customisable information for TableTools instance
	 */
	this.s = {
    /**
     * Store 'this' so the instance can be retreieved from the settings object
     *  @property that
     *  @type     object
     *  @default  this
     */
		"that": this,
		
		/** 
		 * DataTables settings objects
     *  @property dt
     *  @type     object
     *  @default  null
		 */
		"dt": null,
		
		/**
		 * @namespace Print specific information
		 */
		"print": {
			/** 
			 * DataTables draw 'start' point before the printing display was shown
       *  @property saveStart
			 *  @type     int
       *  @default  -1
		 	 */
		  "saveStart": -1,
			
			/** 
			 * DataTables draw 'length' point before the printing display was shown
       *  @property saveLength
			 *  @type     int
       *  @default  -1
		 	 */
		  "saveLength": -1,
		
			/** 
			 * Page scrolling point before the printing display was shown so it can be restored
       *  @property saveScroll
			 *  @type     int
       *  @default  -1
		 	 */
		  "saveScroll": -1,
		
			/** 
			 * Wrapped function to end the print display (to maintain scope)
       *  @property funcEnd
		 	 *  @type     Function
       *  @default  function () {}
		 	 */
		  "funcEnd": function () {}
	  },
	
		/**
		 * A unique ID is assigned to each button in each instance
     *  @property buttonCounter
		 *  @type     int
     *  @default  0
		 */
	  "buttonCounter": 0,
		
		/**
		 * @namespace Select rows specific information
		 */
		"select": {
			/**
			 * Select type - can be 'none', 'single' or 'multi'
       *  @property type
			 *  @type     string
       *  @default  ""
			 */
			"type": "",
			
			/**
			 * Array of nodes which are currently selected
       *  @property selected
			 *  @type     array
       *  @default  []
			 */
			"selected": [],
			
			/**
			 * Function to run before the selection can take place. Will cancel the select if the
			 * function returns false
       *  @property preRowSelect
			 *  @type     Function
       *  @default  null
			 */
			"preRowSelect": null,
			
			/**
			 * Function to run when a row is selected
       *  @property postSelected
			 *  @type     Function
       *  @default  null
			 */
			"postSelected": null,
			
			/**
			 * Function to run when a row is deselected
       *  @property postDeselected
			 *  @type     Function
       *  @default  null
			 */
			"postDeselected": null,
			
			/**
			 * Indicate if all rows are selected (needed for server-side processing)
       *  @property all
			 *  @type     boolean
       *  @default  false
			 */
			"all": false
		},
		
		/**
		 * Store of the user input customisation object
     *  @property custom
		 *  @type     object
     *  @default  {}
		 */
		"custom": {},
		
		/**
		 * SWF movie path
     *  @property swfPath
		 *  @type     string
     *  @default  ""
		 */
		"swfPath": "",
		
		/**
		 * Default button set
     *  @property buttonSet
		 *  @type     array
     *  @default  []
		 */
		"buttonSet": [],
		
		/**
		 * When there is more than one TableTools instance for a DataTable, there must be a 
		 * master which controls events (row selection etc)
     *  @property master
		 *  @type     boolean
     *  @default  false
		 */
		"master": false
	};
	
	
	/**
	 * @namespace Common and useful DOM elements for the class instance
	 */
	this.dom = {
		/**
		 * DIV element that is create and all TableTools buttons (and their children) put into
		 *  @property container
		 *  @type     node
		 *  @default  null
		 */
		"container": null,
		
		/**
		 * The table node to which TableTools will be applied
		 *  @property table
		 *  @type     node
		 *  @default  null
		 */
		"table": null,
		
		/**
		 * @namespace Nodes used for the print display
		 */
		"print": {
			/**
			 * Nodes which have been removed from the display by setting them to display none
			 *  @property hidden
			 *  @type     array
		 	 *  @default  []
			 */
		  "hidden": [],
			
			/**
			 * The information display saying tellng the user about the print display
			 *  @property message
			 *  @type     node
		 	 *  @default  null
			 */
		  "message": null
	  },
		
		/**
		 * @namespace Nodes used for a collection display. This contains the currently used collection
		 */
		"collection": {
			/**
			 * The div wrapper containing the buttons in the collection (i.e. the menu)
			 *  @property collection
			 *  @type     node
		 	 *  @default  null
			 */
			"collection": null,
			
			/**
			 * Background display to provide focus and capture events
			 *  @property background
			 *  @type     node
		 	 *  @default  null
			 */
			"background": null
		}
	};
	
	
	
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Public class methods
	 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
	
	/**
	 * Retreieve the settings object from an instance
	 *  @method fnSettings
	 *  @returns {object} TableTools settings object
	 */
	this.fnSettings = function () {
		return this.s;
	};
	
	
	/* Constructor logic */
	if ( typeof oOpts == 'undefined' )
	{
		oOpts = {};
	}
	
	this.s.dt = oDT.fnSettings();
	this._fnConstruct( oOpts );
	
	return this;
};



TableTools.prototype = {
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Public methods
	 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
	
	/**
	 * Retreieve the settings object from an instance
	 *  @method fnGetSelected
	 *  @returns {array} List of TR nodes which are currently selected
	 */
	"fnGetSelected": function ()
	{
		var masterS = this._fnGetMasterSettings();
		return masterS.select.selected;
	},
	
	/**
	 * Check to see if a current row is selected or not
	 *  @method fnGetSelected
	 *  @param {Node} n TR node to check if it is currently selected or not
	 *  @returns {Boolean} true if select, false otherwise
	 */
	"fnIsSelected": function ( n )
	{
		var selected = this.fnGetSelected();
		for ( var i=0, iLen=selected.length ; i<iLen ; i++ )
		{
			if ( n == selected[i] )
			{
				return true;
			}
		}
		return false;
	},
	
	/**
	 * Select all rows in the table
	 *  @method  fnSelectAll
	 *  @returns void
	 */
	"fnSelectAll": function ()
	{
		var masterS = this._fnGetMasterSettings();
		masterS.that._fnRowSelectAll();
	},
	
	
	/**
	 * Deselect all rows in the table
	 *  @method  fnSelectNone
	 *  @returns void
	 */
	"fnSelectNone": function ()
	{
		var masterS = this._fnGetMasterSettings();
		masterS.that._fnRowDeselectAll();
	},
	
	
	/**
	 * Get the title of the document - useful for file names. The title is retrieved from either
	 * the configuration object's 'title' parameter, or the HTML document title
	 *  @method  fnGetTitle
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns {String} Button title
	 */
	"fnGetTitle": function( oConfig )
	{
		var sTitle = "";
		if ( typeof oConfig.sTitle != 'undefined' && oConfig.sTitle !== "" ) {
			sTitle = oConfig.sTitle;
		} else {
			var anTitle = document.getElementsByTagName('title');
			if ( anTitle.length > 0 )
			{
				sTitle = anTitle[0].innerHTML;
			}
		}
		
		/* Strip characters which the OS will object to - checking for UTF8 support in the scripting
		 * engine
		 */
		if ( "\u00A1".toString().length < 4 ) {
			return sTitle.replace(/[^a-zA-Z0-9_\u00A1-\uFFFF\.,\-_ !\(\)]/g, "");
		} else {
			return sTitle.replace(/[^a-zA-Z0-9_\.,\-_ !\(\)]/g, "");
		}
	},
	
	
	/**
	 * Calculate a unity array with the column width by proportion for a set of columns to be
	 * included for a button. This is particularly useful for PDF creation, where we can use the
	 * column widths calculated by the browser to size the columns in the PDF.
	 *  @method  fnCalcColRations
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns {Array} Unity array of column ratios
	 */
	"fnCalcColRatios": function ( oConfig )
	{
		var
			aoCols = this.s.dt.aoColumns,
			aColumnsInc = this._fnColumnTargets( oConfig.mColumns ),
			aColWidths = [],
			iWidth = 0, iTotal = 0, i, iLen;
		
		for ( i=0, iLen=aColumnsInc.length ; i<iLen ; i++ )
		{
			if ( aColumnsInc[i] )
			{
				iWidth = aoCols[i].nTh.offsetWidth;
				iTotal += iWidth;
				aColWidths.push( iWidth );
			}
		}
		
		for ( i=0, iLen=aColWidths.length ; i<iLen ; i++ )
		{
			aColWidths[i] = aColWidths[i] / iTotal;
		}
		
		return aColWidths.join('\t');
	},
	
	
	/**
	 * Get the information contained in a table as a string
	 *  @method  fnGetTableData
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns {String} Table data as a string
	 */
	"fnGetTableData": function ( oConfig )
	{
		/* In future this could be used to get data from a plain HTML source as well as DataTables */
		if ( this.s.dt )
		{
			return this._fnGetDataTablesData( oConfig );
		}
	},
	
	
	/**
	 * Pass text to a flash button instance, which will be used on the button's click handler
	 *  @method  fnSetText
	 *  @param   {Object} clip Flash button object
	 *  @param   {String} text Text to set
	 *  @returns void
	 */
	"fnSetText": function ( clip, text )
	{
		this._fnFlashSetText( clip, text );
	},
	
	
	
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Private methods (they are of course public in JS, but recommended as private)
	 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
	
	/**
	 * Constructor logic
	 *  @method  _fnConstruct
	 *  @param   {Object} oOpts Same as TableTools constructor
	 *  @returns void
	 *  @private 
	 */
	"_fnConstruct": function ( oOpts )
	{
		this._fnCustomiseSettings( oOpts );
		
		/* Container element */
		this.dom.container = document.createElement('div');
		this.dom.container.style.position = "relative";
		this.dom.container.className = !this.s.dt.bJUI ? "DTTT_container" :
			"DTTT_container ui-buttonset ui-buttonset-multi";
		
		/* Row selection config */
		if ( this.s.select.type != 'none' )
		{
			this._fnRowSelectConfig();
		}
		
		/* Buttons */
		this._fnButtonDefinations( this.s.buttonSet, this.dom.container );
	},
	
	
	/**
	 * Take the user defined settings and the default settings and combine them.
	 *  @method  _fnCustomiseSettings
	 *  @param   {Object} oOpts Same as TableTools constructor
	 *  @returns void
	 *  @private 
	 */
	"_fnCustomiseSettings": function ( oOpts )
	{
		/* Is this the master control instance or not? */
		if ( typeof this.s.dt._TableToolsInit == 'undefined' )
		{
			this.s.master = true;
			this.s.dt._TableToolsInit = true;
		}
		
		/* We can use the table node from comparisons to group controls */
		this.dom.table = this.s.dt.nTable;
		
		/* Clone the defaults and then the user options */
		this.s.custom = $.extend( {}, TableTools.DEFAULTS, oOpts );
		
		/* Flash file location */
		this.s.swfPath = this.s.custom.sSwfPath;
		if ( typeof ZeroClipboard != 'undefined' )
		{
			ZeroClipboard.moviePath = this.s.swfPath;
		}
		
		/* Table row selecting */
		this.s.select.type = this.s.custom.sRowSelect;
		this.s.select.preRowSelect = this.s.custom.fnPreRowSelect;
		this.s.select.postSelected = this.s.custom.fnRowSelected;
		this.s.select.postDeselected = this.s.custom.fnRowDeselected;
		
		/* Button set */
		this.s.buttonSet = this.s.custom.aButtons;
	},
	
	
	/**
	 * Take the user input arrays and expand them to be fully defined, and then add them to a given
	 * DOM element
	 *  @method  _fnButtonDefinations
	 *  @param {array} buttonSet Set of user defined buttons
	 *  @param {node} wrapper Node to add the created buttons to
	 *  @returns void
	 *  @private 
	 */
	"_fnButtonDefinations": function ( buttonSet, wrapper )
	{
		var buttonDef;
		
		for ( var i=0, iLen=buttonSet.length ; i<iLen ; i++ )
		{
			if ( typeof buttonSet[i] == "string" )
			{
				if ( typeof TableTools.BUTTONS[ buttonSet[i] ] == 'undefined' )
				{
					alert( "TableTools: Warning - unknown button type: "+buttonSet[i] );
					continue;
				}
				buttonDef = $.extend( {}, TableTools.BUTTONS[ buttonSet[i] ], true );
			}
			else
			{
				if ( typeof TableTools.BUTTONS[ buttonSet[i].sExtends ] == 'undefined' )
				{
					alert( "TableTools: Warning - unknown button type: "+buttonSet[i].sExtends );
					continue;
				}
				var o = $.extend( {}, TableTools.BUTTONS[ buttonSet[i].sExtends ], true );
				buttonDef = $.extend( o, buttonSet[i], true );
			}
			
			if ( this.s.dt.bJUI )
			{
				buttonDef.sButtonClass += " ui-button ui-state-default";
				buttonDef.sButtonClassHover += " ui-button ui-state-default ui-state-hover";
			}
			
			wrapper.appendChild( this._fnCreateButton( buttonDef ) );
		}
	},
	
	
	/**
	 * Create and configure a TableTools button
	 *  @method  _fnCreateButton
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns {Node} Button element
	 *  @private 
	 */
	"_fnCreateButton": function ( oConfig )
	{
	  var nButton = this._fnButtonBase( oConfig );
		
    if ( oConfig.sAction == "print" )
    {
      this._fnPrintConfig( nButton, oConfig );
    }
    else if ( oConfig.sAction.match(/flash/) )
    {
      this._fnFlashConfig( nButton, oConfig );
    }
    else if ( oConfig.sAction == "text" )
    {
      this._fnTextConfig( nButton, oConfig );
    }
    else if ( oConfig.sAction == "collection" )
    {
      this._fnTextConfig( nButton, oConfig );
			this._fnCollectionConfig( nButton, oConfig );
    }
		
	  return nButton;
  },
	
	
	/**
	 * Create the DOM needed for the button and apply some base properties. All buttons start here
	 *  @method  _fnButtonBase
	 *  @param   {o} oConfig Button configuration object
	 *  @returns {Node} DIV element for the button
	 *  @private 
	 */
	"_fnButtonBase": function ( o )
	{
		var
		  nButton = document.createElement('button'),
		  nSpan = document.createElement('span'),
			masterS = this._fnGetMasterSettings();
		
		nButton.className = "DTTT_button "+o.sButtonClass;
		nButton.setAttribute('id', "ToolTables_"+this.s.dt.sInstance+"_"+masterS.buttonCounter );
		nButton.appendChild( nSpan );
		nSpan.innerHTML = o.sButtonText;
		
		masterS.buttonCounter++;
		
		return nButton;
	},
	
	
	/**
	 * Get the settings object for the master instance. When more than one TableTools instance is
	 * assigned to a DataTable, only one of them can be the 'master' (for the select rows). As such,
	 * we will typically want to interact with that master for global properties.
	 *  @method  _fnGetMasterSettings
	 *  @returns {Object} TableTools settings object
	 *  @private 
	 */
	"_fnGetMasterSettings": function ()
	{
		if ( this.s.master )
		{
			return this.s;
		}
		else
		{
			/* Look for the master which has the same DT as this one */
			var instances = TableTools._aInstances;
			for ( var i=0, iLen=instances.length ; i<iLen ; i++ )
			{
				if ( this.dom.table == instances[i].s.dt.nTable )
				{
					return instances[i].s;
				}
			}
		}
	},
	
	
	
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Button collection functions
	 */
	
	/**
	 * Create a collection button, when activated will present a drop downlist of other buttons
	 *  @param   {Node} nButton Button to use for the collection activation
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns void
	 *  @private
	 */
	"_fnCollectionConfig": function ( nButton, oConfig )
	{
		var nHidden = document.createElement('div');
		nHidden.style.display = "none";
		nHidden.className = !this.s.dt.bJUI ? "DTTT_collection" :
			"DTTT_collection ui-buttonset ui-buttonset-multi";
		oConfig._collection = nHidden;
		
		this._fnButtonDefinations( oConfig.aButtons, nHidden );
	},
	
	
	/**
	 * Show a button collection
	 *  @param   {Node} nButton Button to use for the collection
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns void
	 *  @private
	 */
	"_fnCollectionShow": function ( nButton, oConfig )
	{
		var
			that = this,
			oPos = $(nButton).offset(),
			nHidden = oConfig._collection,
			iDivX = oPos.left,
			iDivY = oPos.top + $(nButton).outerHeight(),
			iWinHeight = $(window).height(), iDocHeight = $(document).height(),
		 	iWinWidth = $(window).width(), iDocWidth = $(document).width();
		
		nHidden.style.position = "absolute";
		nHidden.style.left = iDivX+"px";
		nHidden.style.top = iDivY+"px";
		nHidden.style.display = "block";
		$(nHidden).css('opacity',0);
		
		var nBackground = document.createElement('div');
		nBackground.style.position = "absolute";
		nBackground.style.left = "0px";
		nBackground.style.top = "0px";
		nBackground.style.height = ((iWinHeight>iDocHeight)? iWinHeight : iDocHeight) +"px";
		nBackground.style.width = ((iWinWidth>iDocWidth)? iWinWidth : iDocWidth) +"px";
		nBackground.className = "DTTT_collection_background";
		$(nBackground).css('opacity',0);
		
		document.body.appendChild( nBackground );
		document.body.appendChild( nHidden );
		
		/* Visual corrections to try and keep the collection visible */
		var iDivWidth = $(nHidden).outerWidth();
		var iDivHeight = $(nHidden).outerHeight();
		
		if ( iDivX + iDivWidth > iDocWidth )
		{
			nHidden.style.left = (iDocWidth-iDivWidth)+"px";
		}
		
		if ( iDivY + iDivHeight > iDocHeight )
		{
			nHidden.style.top = (iDivY-iDivHeight-$(nButton).outerHeight())+"px";
		}
	
		this.dom.collection.collection = nHidden;
		this.dom.collection.background = nBackground;
		
		/* This results in a very small delay for the end user but it allows the animation to be
		 * much smoother. If you don't want the animation, then the setTimeout can be removed
		 */
		setTimeout( function () {
			$(nHidden).animate({"opacity": 1}, 500);
			$(nBackground).animate({"opacity": 0.25}, 500);
		}, 10 );
		
		/* Event handler to remove the collection display */
		$(nBackground).click( function () {
			that._fnCollectionHide.call( that, null, null );
		} );
	},
	
	
	/**
	 * Hide a button collection
	 *  @param   {Node} nButton Button to use for the collection
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns void
	 *  @private
	 */
	"_fnCollectionHide": function ( nButton, oConfig )
	{
		if ( oConfig !== null && oConfig.sExtends == 'collection' )
		{
			return;
		}
		
		if ( this.dom.collection.collection !== null )
		{
			$(this.dom.collection.collection).animate({"opacity": 0}, 500, function (e) {
				this.style.display = "none";
			} );
			
			$(this.dom.collection.background).animate({"opacity": 0}, 500, function (e) {
				this.parentNode.removeChild( this );
			} );
			
			this.dom.collection.collection = null;
			this.dom.collection.background = null;
		}
	},
	
	
	
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Row selection functions
	 */
	
	/**
	 * Add event handlers to a table to allow for row selection
	 *  @method  _fnRowSelectConfig
	 *  @returns void
	 *  @private 
	 */
	"_fnRowSelectConfig": function ()
	{
		if ( this.s.master )
		{
			var
				that = this, 
				i, iLen, 
				aoOpenRows = this.s.dt.aoOpenRows;
			
			$(that.s.dt.nTable).addClass( 'DTTT_selectable' );
			
			$('tr', that.s.dt.nTBody).live( 'click', function(e) {
				/* Sub-table must be ignored (odd that the selector won't do this with >) */
				if ( this.parentNode != that.s.dt.nTBody )
				{
					return;
				}
				
				/* Not interested in selecting 'opened' rows */
				for ( i=0, iLen=aoOpenRows.length ; i<iLen ; i++ )
				{
					if ( this == aoOpenRows[i].nTr )
					{
						return;
					}
				}
				
				/* User defined selection function */
				if ( that.s.select.preRowSelect !== null && !that.s.select.preRowSelect.call(that, e) )
				{
					return;
				}
				
				/* And go */
				if ( that.s.select.type == "single" )
				{
					that._fnRowSelectSingle.call( that, this );
				}
				else
				{
					that._fnRowSelectMulti.call( that, this );
				}
			} );
			
			/* Add a draw callback handler for when 'select' all is active and we are using server-side
			 * processing, so TableTools will automatically select the new rows for us
			 */
			that.s.dt.aoDrawCallback.push( {
				"fn": function () {
					if ( that.s.select.all && that.s.dt.oFeatures.bServerSide )
					{
						that.fnSelectAll();
					}
				},
				"sName": "TableTools_select"
			} );
		}
	},
	
	
	/**
	 * Select or deselect a row based on its current state when only one row is allowed to be
	 * selected at a time (i.e. if there is a row already selected, deselect it). If the selected
	 * row is the one being passed in, just deselect and take no further action.
	 *  @method  _fnRowSelectSingle
	 *  @param   {Node} nNode TR element which is being 'activated' in some way
	 *  @returns void
	 *  @private 
	 */
	"_fnRowSelectSingle": function ( nNode )
	{
		if ( this.s.master )
		{
			/* Do nothing on the DataTables 'empty' result set row */
			if ( $('td', nNode).hasClass(this.s.dt.oClasses.sRowEmpty) )
			{
				return;
			}
			
			if ( $(nNode).hasClass('DTTT_selected') )
			{
				this._fnRowDeselect( nNode );
			}
			else
			{
				if ( this.s.select.selected.length !== 0 )
				{
					this._fnRowDeselectAll();
				}
				
				this.s.select.selected.push( nNode );
				$(nNode).addClass( 'DTTT_selected' );
				
				if ( this.s.select.postSelected !== null )
				{
					this.s.select.postSelected.call( this, nNode );
				}
			}
			
			TableTools._fnEventDispatch( this, 'select', nNode );
		}
	},
	
	
	/**
	 * Select or deselect a row based on its current state when multiple rows are allowed to be
	 * selected.
	 *  @method  _fnRowSelectMulti
	 *  @param   {Node} nNode TR element which is being 'activated' in some way
	 *  @returns void
	 *  @private 
	 */
	"_fnRowSelectMulti": function ( nNode )
	{
		if ( this.s.master )
		{
			/* Do nothing on the DataTables 'empty' result set row */
			if ( $('td', nNode).hasClass(this.s.dt.oClasses.sRowEmpty) )
			{
				return;
			}
			
			if ( $(nNode).hasClass('DTTT_selected') )
			{
				this._fnRowDeselect( nNode );
			}
			else
			{
				this.s.select.selected.push( nNode );
				$(nNode).addClass( 'DTTT_selected' );
				
				if ( this.s.select.postSelected !== null )
				{
					this.s.select.postSelected.call( this, nNode );
				}
			}
			
			TableTools._fnEventDispatch( this, 'select', nNode );
		}
	},
	
	
	/**
	 * Select all TR elements in the table. Note that this function will still operate in 'single'
	 * select mode, which might not be what you desire (in which case, don't call this function!)
	 *  @method  _fnRowSelectAll
	 *  @returns void
	 *  @private 
	 */
	"_fnRowSelectAll": function ( )
	{
		if ( this.s.master )
		{
			var n;
			for ( var i=0, iLen=this.s.dt.aiDisplayMaster.length ; i<iLen ; i++ )
			{
				n = this.s.dt.aoData[ this.s.dt.aiDisplayMaster[i] ].nTr;
				
				if ( !$(n).hasClass('DTTT_selected') )
				{
					this.s.select.selected.push( n );
					$(n).addClass( 'DTTT_selected' );
				}
			}
			
			this.s.select.all = true;
			TableTools._fnEventDispatch( this, 'select', null );
		}
	},
	
	
	/**
	 * Deselect all TR elements in the table. If nothing is currently selected, then no action is
	 * taken.
	 *  @method  _fnRowDeselectAll
	 *  @returns void
	 *  @private 
	 */
	"_fnRowDeselectAll": function ( )
	{
		if ( this.s.master )
		{
			for ( var i=this.s.select.selected.length-1 ; i>=0 ; i-- )
			{
				this._fnRowDeselect( i );
			}
			
			this.s.select.all = false;
			TableTools._fnEventDispatch( this, 'select', null );
		}
	},
	
	
	/**
	 * Deselect a single row, based on its index in the selected array, or a TR node (when the
	 * index is then computed)
	 *  @method  _fnRowDeselect
	 *  @param   {int|Node} i Node or index of node in selected array, which is to be deselected
	 *  @returns void
	 *  @private 
	 */
	"_fnRowDeselect": function ( i )
	{
		if ( typeof i.nodeName != 'undefined' )
		{
			i = $.inArray( i, this.s.select.selected );
		}
		
		var nNode = this.s.select.selected[i];
		$(nNode).removeClass('DTTT_selected');
		this.s.select.selected.splice( i, 1 );
		
		if ( this.s.select.postDeselected !== null )
		{
			this.s.select.postDeselected.call( this, nNode );
		}
		
		this.s.select.all = false;
	},
	
	
	
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Text button functions
	 */
	
	/**
	 * Configure a text based button for interaction events
	 *  @method  _fnTextConfig
	 *  @param   {Node} nButton Button element which is being considered
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns void
	 *  @private 
	 */
	"_fnTextConfig": function ( nButton, oConfig )
	{
		var that = this;
		
		if ( oConfig.fnInit !== null )
		{
			oConfig.fnInit.call( this, nButton, oConfig );
		}
		
		if ( oConfig.sToolTip != "" )
		{
			nButton.title = oConfig.sToolTip;
		}
		
	  $(nButton).hover( function () {
			$(nButton).removeClass( oConfig.sButtonClass ).
				addClass(oConfig.sButtonClassHover );
			if ( oConfig.fnMouseover !== null )
			{
				oConfig.fnMouseover.call( this, nButton, oConfig, null );
			}
		}, function () {
			$(nButton).removeClass( oConfig.sButtonClassHover ).
				addClass( oConfig.sButtonClass );
			if ( oConfig.fnMouseout !== null )
			{
				oConfig.fnMouseout.call( this, nButton, oConfig, null );
			}
		} );
		
		if ( oConfig.fnSelect !== null )
		{
			TableTools._fnEventListen( this, 'select', function (n) {
				oConfig.fnSelect.call( that, nButton, oConfig, n );
			} );
		}
		
		$(nButton).click( function (e) {
			e.preventDefault();
			
			if ( oConfig.fnClick !== null )
			{
				oConfig.fnClick.call( that, nButton, oConfig, null );
			}
			
			/* Provide a complete function to match the behaviour of the flash elements */
			if ( oConfig.fnComplete !== null )
			{
				oConfig.fnComplete.call( that, nButton, oConfig, null, null );
			}
			
			that._fnCollectionHide( nButton, oConfig );
		} );
	},
	
	
	
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Flash button functions
	 */
	
	/**
	 * Configure a flash based button for interaction events
	 *  @method  _fnFlashConfig
	 *  @param   {Node} nButton Button element which is being considered
	 *  @param   {o} oConfig Button configuration object
	 *  @returns void
	 *  @private 
	 */
	"_fnFlashConfig": function ( nButton, oConfig )
	{
	  var that = this;
		var flash = new ZeroClipboard.Client();
		
		if ( oConfig.fnInit !== null )
		{
			oConfig.fnInit.call( this, nButton, oConfig );
		}
		
		flash.setHandCursor( true );
		
		if ( oConfig.sAction == "flash_save" )
		{
			flash.setAction( 'save' );
			flash.setCharSet( (oConfig.sCharSet=="utf16le") ? 'UTF16LE' : 'UTF8' );
			flash.setBomInc( oConfig.bBomInc );
			flash.setFileName( oConfig.sFileName.replace('*', this.fnGetTitle(oConfig)) );
		}
		else if ( oConfig.sAction == "flash_pdf" )
		{
			flash.setAction( 'pdf' );
			flash.setFileName( oConfig.sFileName.replace('*', this.fnGetTitle(oConfig)) );
		}
		else
		{
			flash.setAction( 'copy' );
		}
		
		flash.addEventListener('mouseOver', function(client) {
			$(nButton).removeClass( oConfig.sButtonClass ).
				addClass(oConfig.sButtonClassHover );
			
			if ( oConfig.fnMouseover !== null )
			{
				oConfig.fnMouseover.call( that, nButton, oConfig, flash );
			}
		} );
		
		flash.addEventListener('mouseOut', function(client) {
			$(nButton).removeClass( oConfig.sButtonClassHover ).
				addClass(oConfig.sButtonClass );
			
			if ( oConfig.fnMouseout !== null )
			{
				oConfig.fnMouseout.call( that, nButton, oConfig, flash );
			}
		} );
		
		flash.addEventListener('mouseDown', function(client) {
			if ( oConfig.fnClick !== null )
			{
				oConfig.fnClick.call( that, nButton, oConfig, flash );
			}
		} );
		
		flash.addEventListener('complete', function (client, text) {
			if ( oConfig.fnComplete !== null )
			{
				oConfig.fnComplete.call( that, nButton, oConfig, flash, text );
			}
			that._fnCollectionHide( nButton, oConfig );
		} );
		
		this._fnFlashGlue( flash, nButton, oConfig.sToolTip );
	},
	
	
	/**
	 * Wait until the id is in the DOM before we "glue" the swf. Note that this function will call
	 * itself (using setTimeout) until it completes successfully
	 *  @method  _fnFlashGlue
	 *  @param   {Object} clip Zero clipboard object
	 *  @param   {Node} node node to glue swf to
	 *  @param   {String} text title of the flash movie
	 *  @returns void
	 *  @private 
	 */
	"_fnFlashGlue": function ( flash, node, text )
	{
	  var that = this;
	  var id = node.getAttribute('id');
	  
		if ( document.getElementById(id) )
		{
			flash.glue( node, text );
		}
		else
		{
			setTimeout( function () {
				that._fnFlashGlue( flash, node, text );
			}, 100 );
		}
	},
	
	
	/**
	 * Set the text for the flash clip to deal with
	 * 
	 * This function is required for large information sets. There is a limit on the 
	 * amount of data that can be transfered between Javascript and Flash in a single call, so
	 * we use this method to build up the text in Flash by sending over chunks. It is estimated
	 * that the data limit is around 64k, although it is undocuments, and appears to be different
	 * between different flash versions. We chunk at 8KiB.
	 *  @method  _fnFlashSetText
	 *  @param   {Object} clip the ZeroClipboard object
	 *  @param   {String} sData the data to be set
	 *  @returns void
	 *  @private 
	 */
	"_fnFlashSetText": function ( clip, sData )
	{
		var asData = this._fnChunkData( sData, 8192 );
		
		clip.clearText();
		for ( var i=0, iLen=asData.length ; i<iLen ; i++ )
		{
			clip.appendText( asData[i] );
		}
	},
	
	
	
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Data retrieval functions
	 */
	
	/**
	 * Convert the mixed columns variable into a boolean array the same size as the columns, which
	 * indicates which columns we want to include
	 *  @method  _fnColumnTargets
	 *  @param   {String|Array} mColumns The columns to be included in data retreieval. If a string
	 *             then it can take the value of "visible" or "hidden" (to include all visible or
	 *             hidden columns respectively). Or an array of column indexes
	 *  @returns {Array} A boolean array the length of the columns of the table, which each value
	 *             indicating if the column is to be included or not
	 *  @private 
	 */
	"_fnColumnTargets": function ( mColumns )
	{
		var aColumns = [];
		var dt = this.s.dt;
		
		if ( typeof mColumns == "object" )
		{
			for ( i=0, iLen=dt.aoColumns.length ; i<iLen ; i++ )
			{
				aColumns.push( false );
			}
			
			for ( i=0, iLen=mColumns.length ; i<iLen ; i++ )
			{
				aColumns[ mColumns[i] ] = true;
			}
		}
		else if ( mColumns == "visible" )
		{
			for ( i=0, iLen=dt.aoColumns.length ; i<iLen ; i++ )
			{
				aColumns.push( dt.aoColumns[i].bVisible ? true : false );
			}
		}
		else if ( mColumns == "hidden" )
		{
			for ( i=0, iLen=dt.aoColumns.length ; i<iLen ; i++ )
			{
				aColumns.push( dt.aoColumns[i].bVisible ? false : true );
			}
		}
		else /* all */
		{
			for ( i=0, iLen=dt.aoColumns.length ; i<iLen ; i++ )
			{
				aColumns.push( true );
			}
		}
		
		return aColumns;
	},
	
	
	/**
	 * New line character(s) depend on the platforms
	 *  @method  method
	 *  @param   {Object} oConfig Button configuration object - only interested in oConfig.sNewLine
	 *  @returns {String} Newline character
	 */
	"_fnNewline": function ( oConfig )
	{
		if ( oConfig.sNewLine == "auto" )
		{
			return navigator.userAgent.match(/Windows/) ? "\r\n" : "\n";
		}
		else
		{
			return oConfig.sNewLine;
		}
	},
	
	
	/**
	 * Get data from DataTables' internals and format it for output
	 *  @method  _fnGetDataTablesData
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns {String} Concatinated string of data
	 *  @private 
	 */
	"_fnGetDataTablesData": function ( oConfig )
	{
		var i, iLen, j, jLen;
		var sData = '', sLoopData = '';
		var dt = this.s.dt;
		var regex = new RegExp(oConfig.sFieldBoundary, "g"); /* Do it here for speed */
		var aColumnsInc = this._fnColumnTargets( oConfig.mColumns );
		var sNewline = this._fnNewline( oConfig );
		
		/*
		 * Header
		 */
		if ( oConfig.bHeader )
		{
			for ( i=0, iLen=dt.aoColumns.length ; i<iLen ; i++ )
			{
				if ( aColumnsInc[i] )
				{
					sLoopData = dt.aoColumns[i].sTitle.replace(/\n/g," ").replace( /<.*?>/g, "" );
					sLoopData = this._fnHtmlDecode( sLoopData );
					
					sData += this._fnBoundData( sLoopData, oConfig.sFieldBoundary, regex ) +
					 	oConfig.sFieldSeperator;
				}
			}
			sData = sData.slice( 0, oConfig.sFieldSeperator.length*-1 );
			sData += sNewline;
		}
		
		/*
		 * Body
		 */
		for ( j=0, jLen=dt.aiDisplay.length ; j<jLen ; j++ )
		{
			/* Columns */
			for ( i=0, iLen=dt.aoColumns.length ; i<iLen ; i++ )
			{
				if ( aColumnsInc[i] )
				{
					/* Convert to strings (with small optimisation) */
					var mTypeData = dt.aoData[ dt.aiDisplay[j] ]._aData[ i ];
					if ( typeof mTypeData == "string" )
					{
						/* Strip newlines, replace img tags with alt attr. and finally strip html... */
						sLoopData = mTypeData.replace(/\n/g," ");
						sLoopData =
						 	sLoopData.replace(/<img.*?\s+alt\s*=\s*(?:"([^"]+)"|'([^']+)'|([^\s>]+)).*?>/gi,
						 		'$1$2$3');
						sLoopData = sLoopData.replace( /<.*?>/g, "" );
					}
					else
					{
						sLoopData = mTypeData+"";
					}
					
					/* Trim and clean the data */
					sLoopData = sLoopData.replace(/^\s+/, '').replace(/\s+$/, '');
					sLoopData = this._fnHtmlDecode( sLoopData );
					
					/* Bound it and add it to the total data */
					sData += this._fnBoundData( sLoopData, oConfig.sFieldBoundary, regex ) +
					 	oConfig.sFieldSeperator;
				}
			}
			sData = sData.slice( 0, oConfig.sFieldSeperator.length*-1 );
			sData += sNewline;
		}
		
		/* Remove the last new line */
		sData.slice( 0, -1 );
		
		/*
		 * Footer
		 */
		if ( oConfig.bFooter )
		{
			for ( i=0, iLen=dt.aoColumns.length ; i<iLen ; i++ )
			{
				if ( aColumnsInc[i] && dt.aoColumns[i].nTf !== null )
				{
					sLoopData = dt.aoColumns[i].nTf.innerHTML.replace(/\n/g," ").replace( /<.*?>/g, "" );
					sLoopData = this._fnHtmlDecode( sLoopData );
					
					sData += this._fnBoundData( sLoopData, oConfig.sFieldBoundary, regex ) +
					 	oConfig.sFieldSeperator;
				}
			}
			sData = sData.slice( 0, oConfig.sFieldSeperator.length*-1 );
		}
		
		/* No pointers here - this is a string copy :-) */
		_sLastData = sData;
		return sData;
	},
	
	
	/**
	 * Wrap data up with a boundary string
	 *  @method  _fnBoundData
	 *  @param   {String} sData data to bound
	 *  @param   {String} sBoundary bounding char(s)
	 *  @param   {RegExp} regex search for the bounding chars - constructed outside for efficincy
	 *             in the loop
	 *  @returns {String} bound data
	 *  @private 
	 */
	"_fnBoundData": function ( sData, sBoundary, regex )
	{
		if ( sBoundary === "" )
		{
			return sData;
		}
		else
		{
			return sBoundary + sData.replace(regex, "\\"+sBoundary) + sBoundary;
		}
	},
	
	
	/**
	 * Break a string up into an array of smaller strings
	 *  @method  _fnChunkData
	 *  @param   {String} sData data to be broken up
	 *  @param   {Int} iSize chunk size
	 *  @returns {Array} String array of broken up text
	 *  @private 
	 */
	"_fnChunkData": function ( sData, iSize )
	{
		var asReturn = [];
		var iStrlen = sData.length;
		
		for ( var i=0 ; i<iStrlen ; i+=iSize )
		{
			if ( i+iSize < iStrlen )
			{
				asReturn.push( sData.substring( i, i+iSize ) );
			}
			else
			{
				asReturn.push( sData.substring( i, iStrlen ) );
			}
		}
		
		return asReturn;
	},
	
	
	/**
	 * Decode HTML entities
	 *  @method  _fnHtmlDecode
	 *  @param   {String} sData encoded string
	 *  @returns {String} decoded string
	 *  @private 
	 */
	"_fnHtmlDecode": function ( sData )
	{
		if ( sData.indexOf('&') == -1 )
		{
			return sData;
		}
		
		var 
			aData = this._fnChunkData( sData, 2048 ),
			n = document.createElement('div'),
			i, iLen, iIndex,
			sReturn = "", sInner;
		
		/* nodeValue has a limit in browsers - so we chunk the data into smaller segments to build
		 * up the string. Note that the 'trick' here is to remember than we might have split over
		 * an HTML entity, so we backtrack a little to make sure this doesn't happen
		 */
		for ( i=0, iLen=aData.length ; i<iLen ; i++ )
		{
			/* Magic number 8 is because no entity is longer then strlen 8 in ISO 8859-1 */
			iIndex = aData[i].lastIndexOf( '&' );
			if ( iIndex != -1 && aData[i].length >= 8 && iIndex > aData[i].length - 8 )
			{
				sInner = aData[i].substr( iIndex );
				aData[i] = aData[i].substr( 0, iIndex );
			}
			
			n.innerHTML = aData[i];
			sReturn += n.childNodes[0].nodeValue;
		}
		
		return sReturn;
	},
	
	
	
	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	 * Printing functions
	 */
	
	/**
	 * Configure a button for printing
	 *  @method  _fnPrintConfig
	 *  @param   {Node} nButton Button element which is being considered
	 *  @param   {Object} oConfig Button configuration object
	 *  @returns void
	 *  @private 
	 */
	"_fnPrintConfig": function ( nButton, oConfig )
	{
	  var that = this;
		
		if ( oConfig.fnInit !== null )
		{
			oConfig.fnInit.call( this, nButton, oConfig );
		}

	  $(nButton).hover( function () {
			$(nButton).removeClass( oConfig.sButtonClass ).
				addClass(oConfig.sButtonClassHover );
		}, function () {
			$(nButton).removeClass( oConfig.sButtonClassHover ).
				addClass(oConfig.sButtonClass );
		} );
		
		if ( oConfig.fnSelect !== null )
		{
			TableTools._fnEventListen( this, 'select', function (n) {
				oConfig.fnSelect.call( that, nButton, oConfig, n );
			} );
		}
		
		$(nButton).click( function (e) {
			e.preventDefault();
			
			that._fnPrintStart.call( that, e, oConfig);
			
			if ( oConfig.fnClick !== null )
			{
				oConfig.fnClick.call( that, nButton, oConfig, null );
			}
			
			/* Provide a complete function to match the behaviour of the flash elements */
			if ( oConfig.fnComplete !== null )
			{
				oConfig.fnComplete.call( that, nButton, oConfig, null, null );
			}
			
			that._fnCollectionHide( nButton, oConfig );
		} );
  },
  
  /**
   * Show print display
   *  @method  _fnPrintStart
   *  @param   {Event} e Event object
	 *  @param   {Object} oConfig Button configuration object
   *  @returns void
	 *  @private 
   */
  "_fnPrintStart": function ( e, oConfig )
	{
	  var that = this;
	  var oSetDT = this.s.dt;
	  
    /* Parse through the DOM hiding everything that isn't needed for the table */
    this._fnPrintHideNodes( oSetDT.nTable );
		
    /* Show the whole table */
    this.s.print.saveStart = oSetDT._iDisplayStart;
    this.s.print.saveLength = oSetDT._iDisplayLength;

		if ( oConfig.bShowAll )
		{
    	oSetDT._iDisplayStart = 0;
    	oSetDT._iDisplayLength = -1;
    	oSetDT.oApi._fnCalculateEnd( oSetDT );
    	oSetDT.oApi._fnDraw( oSetDT );
		}
		
		/* Adjust the display for scrolling which might be done by DataTables */
		if ( oSetDT.oScroll.sX !== "" || oSetDT.oScroll.sY !== "" )
		{
			this._fnPrintScrollStart( oSetDT );
		}
		
		/* Remove the other DataTables feature nodes - but leave the table! and info div */
		var anFeature = oSetDT.aanFeatures;
		for ( var cFeature in anFeature )
		{
			if ( cFeature != 'i' && cFeature != 't' && cFeature.length == 1 )
			{
			  for ( var i=0, iLen=anFeature[cFeature].length ; i<iLen ; i++ )
			  {
				  this.dom.print.hidden.push( {
				  	"node": anFeature[cFeature][i],
				  	"display": "block"
				  } );
				  anFeature[cFeature][i].style.display = "none";
			  }
			}
		}
		
		/* Print class can be used for styling */
		$(document.body).addClass( 'DTTT_Print' );
    
    /* Add a node telling the user what is going on */
    if ( oConfig.sInfo !== "" )
    {
      var nInfo = document.createElement( "div" );
      nInfo.className = "DTTT_print_info";
      nInfo.innerHTML = oConfig.sInfo;
      document.body.appendChild( nInfo );
      
      setTimeout( function() {
      	$(nInfo).fadeOut( "normal", function() {
      		document.body.removeChild( nInfo );
      	} );
      }, 2000 );
    }
    
    /* Add a message at the top of the page */
    if ( oConfig.sMessage !== "" )
    {
    	this.dom.print.message = document.createElement( "div" );
    	this.dom.print.message.className = "DTTT_PrintMessage";
    	this.dom.print.message.innerHTML = oConfig.sMessage;
    	document.body.insertBefore( this.dom.print.message, document.body.childNodes[0] );
    }
    
    /* Cache the scrolling and the jump to the top of the t=page */
    this.s.print.saveScroll = $(window).scrollTop();
    window.scrollTo( 0, 0 );
    
    this.s.print.funcEnd = function(e) {
     that._fnPrintEnd.call( that, e ); 
    };
    $(document).bind( "keydown", null, this.s.print.funcEnd );
  },
  
	
	/**
	 * Printing is finished, resume normal display
	 *  @method  _fnPrintEnd
	 *  @param   {Event} e Event object
	 *  @returns void
	 *  @private 
	 */
  "_fnPrintEnd": function ( e )
	{
		/* Only interested in the escape key */
		if ( e.keyCode == 27 )
		{
			e.preventDefault();
			
		  var that = this;
	    var oSetDT = this.s.dt;
	    var oSetPrint = this.s.print;
	    var oDomPrint = this.dom.print;
	    
			/* Show all hidden nodes */
			this._fnPrintShowNodes();
			
			/* Restore DataTables' scrolling */
			if ( oSetDT.oScroll.sX !== "" || oSetDT.oScroll.sY !== "" )
			{
				this._fnPrintScrollEnd();
			}
			
			/* Restore the scroll */
			window.scrollTo( 0, oSetPrint.saveScroll );
			
			/* Drop the print message */
			if ( oDomPrint.message !== null )
			{
				document.body.removeChild( oDomPrint.message );
				oDomPrint.message = null;
			}
			
			/* Styling class */
			$(document.body).removeClass( 'DTTT_Print' );
			
			/* Restore the table length */
			oSetDT._iDisplayStart = oSetPrint.saveStart;
			oSetDT._iDisplayLength = oSetPrint.saveLength;
			oSetDT.oApi._fnCalculateEnd( oSetDT );
			oSetDT.oApi._fnDraw( oSetDT );
			
			$(document).unbind( "keydown", this.s.print.funcEnd );
			this.s.print.funcEnd = null;
		}
	},
	
	
	/**
	 * Take account of scrolling in DataTables by showing the full table
	 *  @returns void
	 *  @private 
	 */
	"_fnPrintScrollStart": function ()
	{
		var 
			oSetDT = this.s.dt,
			nScrollHeadInner = oSetDT.nScrollHead.getElementsByTagName('div')[0],
			nScrollHeadTable = nScrollHeadInner.getElementsByTagName('table')[0],
			nScrollBody = oSetDT.nTable.parentNode;

		/* Copy the header in the thead in the body table, this way we show one single table when
		 * in print view. Note that this section of code is more or less verbatim from DT 1.7.0
		 */
		var nTheadSize = oSetDT.nTable.getElementsByTagName('thead');
		if ( nTheadSize.length > 0 )
		{
			oSetDT.nTable.removeChild( nTheadSize[0] );
		}
		
		if ( oSetDT.nTFoot !== null )
		{
			var nTfootSize = oSetDT.nTable.getElementsByTagName('tfoot');
			if ( nTfootSize.length > 0 )
			{
				oSetDT.nTable.removeChild( nTfootSize[0] );
			}
		}
		
		nTheadSize = oSetDT.nTHead.cloneNode(true);
		oSetDT.nTable.insertBefore( nTheadSize, oSetDT.nTable.childNodes[0] );
		
		if ( oSetDT.nTFoot !== null )
		{
			nTfootSize = oSetDT.nTFoot.cloneNode(true);
			oSetDT.nTable.insertBefore( nTfootSize, oSetDT.nTable.childNodes[1] );
		}
		
		/* Now adjust the table's viewport so we can actually see it */
		if ( oSetDT.oScroll.sX !== "" )
		{
			oSetDT.nTable.style.width = $(oSetDT.nTable).outerWidth()+"px";
			nScrollBody.style.width = $(oSetDT.nTable).outerWidth()+"px";
			nScrollBody.style.overflow = "visible";
		}
		
		if ( oSetDT.oScroll.sY !== "" )
		{
			nScrollBody.style.height = $(oSetDT.nTable).outerHeight()+"px";
			nScrollBody.style.overflow = "visible";
    }
	},
	
	
	/**
	 * Take account of scrolling in DataTables by showing the full table. Note that the redraw of
	 * the DataTable that we do will actually deal with the majority of the hardword here
	 *  @returns void
	 *  @private 
	 */
	"_fnPrintScrollEnd": function ()
	{
		var 
			oSetDT = this.s.dt,
			nScrollBody = oSetDT.nTable.parentNode;
		
		if ( oSetDT.oScroll.sX !== "" )
		{
			nScrollBody.style.width = oSetDT.oApi._fnStringToCss( oSetDT.oScroll.sX );
			nScrollBody.style.overflow = "auto";
		}
		
		if ( oSetDT.oScroll.sY !== "" )
		{
			nScrollBody.style.height = oSetDT.oApi._fnStringToCss( oSetDT.oScroll.sY );
			nScrollBody.style.overflow = "auto";
		}
	},
	
	
	/**
	 * Resume the display of all TableTools hidden nodes
	 *  @method  _fnPrintShowNodes
	 *  @returns void
	 *  @private 
	 */
  "_fnPrintShowNodes": function ( )
	{
	  var anHidden = this.dom.print.hidden;
	  
		for ( var i=0, iLen=anHidden.length ; i<iLen ; i++ )
		{
			anHidden[i].node.style.display = anHidden[i].display;
		}
		anHidden.splice( 0, anHidden.length );
	},
	
	
	/**
	 * Hide nodes which are not needed in order to display the table. Note that this function is
	 * recursive
	 *  @method  _fnPrintHideNodes
	 *  @param   {Node} nNode Element which should be showing in a 'print' display
	 *  @returns void
	 *  @private 
	 */
  "_fnPrintHideNodes": function ( nNode )
	{
	  var anHidden = this.dom.print.hidden;
	  
		var nParent = nNode.parentNode;
		var nChildren = nParent.childNodes;
		for ( var i=0, iLen=nChildren.length ; i<iLen ; i++ )
		{
			if ( nChildren[i] != nNode && nChildren[i].nodeType == 1 )
			{
				/* If our node is shown (don't want to show nodes which were previously hidden) */
				var sDisplay = $(nChildren[i]).css("display");
			 	if ( sDisplay != "none" )
				{
					/* Cache the node and it's previous state so we can restore it */
					anHidden.push( {
						"node": nChildren[i],
						"display": sDisplay
					} );
					nChildren[i].style.display = "none";
				}
			}
		}
		
		if ( nParent.nodeName != "BODY" )
		{
			this._fnPrintHideNodes( nParent );
		}
	}
};



/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Static variables
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**
 * Store of all instances that have been created of TableTools, so one can look up other (when
 * there is need of a master)
 *  @property _aInstances
 *  @type     Array
 *  @default  []
 *  @private
 */
TableTools._aInstances = [];


/**
 * Store of all listeners and their callback functions
 *  @property _aListeners
 *  @type     Array
 *  @default  []
 */
TableTools._aListeners = [];



/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Static methods
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**
 * Get an array of all the master instances
 *  @method  fnGetMasters
 *  @returns {Array} List of master TableTools instances
 *  @static
 */
TableTools.fnGetMasters = function ()
{
	var a = [];
	for ( var i=0, iLen=TableTools._aInstances.length ; i<iLen ; i++ )
	{
		if ( TableTools._aInstances[i].s.master )
		{
			a.push( TableTools._aInstances[i].s );
		}
	}
	return a;
};

/**
 * Get the master instance for a table node (or id if a string is given)
 *  @method  fnGetInstance
 *  @returns {Object} ID of table OR table node, for which we want the TableTools instance
 *  @static
 */
TableTools.fnGetInstance = function ( node )
{
	if ( typeof node != 'object' )
	{
		node = document.getElementById(node);
	}
	
	for ( var i=0, iLen=TableTools._aInstances.length ; i<iLen ; i++ )
	{
		if ( TableTools._aInstances[i].s.master && TableTools._aInstances[i].dom.table == node )
		{
			return TableTools._aInstances[i];
		}
	}
	return null;
};


/**
 * Add a listener for a specific event
 *  @method  _fnEventListen
 *  @param   {Object} that Scope of the listening function (i.e. 'this' in the caller)
 *  @param   {String} type Event type
 *  @param   {Function} fn Function
 *  @returns void
 *  @private
 *  @static
 */
TableTools._fnEventListen = function ( that, type, fn )
{
	TableTools._aListeners.push( {
		"that": that,
		"type": type,
		"fn": fn
	} );
};
	

/**
 * An event has occured - look up every listener and fire it off. We check that the event we are
 * going to fire is attached to the same table (using the table node as reference) before firing
 *  @method  _fnEventDispatch
 *  @param   {Object} that Scope of the listening function (i.e. 'this' in the caller)
 *  @param   {String} type Event type
 *  @param   {Node} node Element that the event occured on (may be null)
 *  @returns void
 *  @private
 *  @static
 */
TableTools._fnEventDispatch = function ( that, type, node )
{
	var listeners = TableTools._aListeners;
	for ( var i=0, iLen=listeners.length ; i<iLen ; i++ )
	{
		if ( that.dom.table == listeners[i].that.dom.table && listeners[i].type == type )
		{
			listeners[i].fn( node );
		}
	}
};






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


/**
 * @namespace Default button configurations
 */
TableTools.BUTTONS = {
	"csv": {
		"sAction": "flash_save",
		"sCharSet": "utf8",
		"bBomInc": false,
		"sFileName": "*.csv",
		"sFieldBoundary": "'",
		"sFieldSeperator": ",",
		"sNewLine": "auto",
		"sTitle": "",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_csv",
		"sButtonClassHover": "DTTT_button_csv_hover",
		"sButtonText": "CSV",
		"mColumns": "all", /* "all", "visible", "hidden" or array of column integers */
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": function( nButton, oConfig, flash ) {
			this.fnSetText( flash, this.fnGetTableData(oConfig) );
		},
		"fnSelect": null,
		"fnComplete": null,
		"fnInit": null
	},
	"xls": {
		"sAction": "flash_save",
		"sCharSet": "utf16le",
		"bBomInc": true,
		"sFileName": "*.csv",
		"sFieldBoundary": "",
		"sFieldSeperator": "\t",
		"sNewLine": "auto",
		"sTitle": "",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_xls",
		"sButtonClassHover": "DTTT_button_xls_hover",
		"sButtonText": "Excel",
		"mColumns": "all",
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": function( nButton, oConfig, flash ) {
			this.fnSetText( flash, this.fnGetTableData(oConfig) );
		},
		"fnSelect": null,
		"fnComplete": null,
		"fnInit": null
	},
	"copy": {
		"sAction": "flash_copy",
		"sFieldBoundary": "",
		"sFieldSeperator": "\t",
		"sNewLine": "auto",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_copy",
		"sButtonClassHover": "DTTT_button_copy_hover",
		"sButtonText": "Copy",
		"mColumns": "all",
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": function( nButton, oConfig, flash ) {
			this.fnSetText( flash, this.fnGetTableData(oConfig) );
		},
		"fnSelect": null,
		"fnComplete": function(nButton, oConfig, flash, text) {
			var
				len = text.split('\n').length - 1,
				plural = (len==1) ? "" : "s";
			alert( 'Copied '+len+' row'+plural+' to the clipboard' );
		},
		"fnInit": null
	},
	"pdf": {
		"sAction": "flash_pdf",
		"sFieldBoundary": "",
		"sFieldSeperator": "\t",
		"sNewLine": "\n",
		"sFileName": "*.pdf",
		"sToolTip": "",
		"sTitle": "",
		"sButtonClass": "DTTT_button_pdf",
		"sButtonClassHover": "DTTT_button_pdf_hover",
		"sButtonText": "PDF",
		"mColumns": "all",
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": function( nButton, oConfig, flash ) {
			this.fnSetText( flash, 
				"title:"+ this.fnGetTitle(oConfig) +"\n"+
				"colWidth:"+ this.fnCalcColRatios(oConfig) +"\n"+
				"--/TableToolsOpts--\n" +
				this.fnGetTableData(oConfig)
			);
		},
		"fnSelect": null,
		"fnComplete": null,
		"fnInit": null
	},
	"print": {
		"sAction": "print",
		"sInfo": "<h6>Print view</h6><p>Please use your browser's print function to "+
		  "print this table. Press escape when finished.",
		"sMessage": "",
		"bShowAll": true,
		"sToolTip": "View print view",
		"sButtonClass": "DTTT_button_print",
		"sButtonClassHover": "DTTT_button_print_hover",
		"sButtonText": "Print",
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": null,
		"fnSelect": null,
		"fnComplete": null,
		"fnInit": null
	},
	"text": {
		"sAction": "text",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_text",
		"sButtonClassHover": "DTTT_button_text_hover",
		"sButtonText": "Text button",
		"mColumns": "all",
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": null,
		"fnSelect": null,
		"fnComplete": null,
		"fnInit": null
	},
	"select": {
		"sAction": "text",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_text",
		"sButtonClassHover": "DTTT_button_text_hover",
		"sButtonText": "Select button",
		"mColumns": "all",
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": null,
		"fnSelect": function( nButton, oConfig ) {
			if ( this.fnGetSelected().length !== 0 ) {
				$(nButton).removeClass('DTTT_disabled');
			} else {
				$(nButton).addClass('DTTT_disabled');
			}
		},
		"fnComplete": null,
		"fnInit": function( nButton, oConfig ) {
			$(nButton).addClass('DTTT_disabled');
		}
	},
	"select_single": {
		"sAction": "text",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_text",
		"sButtonClassHover": "DTTT_button_text_hover",
		"sButtonText": "Select button",
		"mColumns": "all",
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": null,
		"fnSelect": function( nButton, oConfig ) {
			var iSelected = this.fnGetSelected().length;
			if ( iSelected == 1 ) {
				$(nButton).removeClass('DTTT_disabled');
			} else {
				$(nButton).addClass('DTTT_disabled');
			}
		},
		"fnComplete": null,
		"fnInit": function( nButton, oConfig ) {
			$(nButton).addClass('DTTT_disabled');
		}
	},
	"select_all": {
		"sAction": "text",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_text",
		"sButtonClassHover": "DTTT_button_text_hover",
		"sButtonText": "Select all",
		"mColumns": "all",
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": function( nButton, oConfig ) {
			this.fnSelectAll();
		},
		"fnSelect": function( nButton, oConfig ) {
			if ( this.fnGetSelected().length == this.s.dt.fnRecordsDisplay() ) {
				$(nButton).addClass('DTTT_disabled');
			} else {
				$(nButton).removeClass('DTTT_disabled');
			}
		},
		"fnComplete": null,
		"fnInit": null
	},
	"select_none": {
		"sAction": "text",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_text",
		"sButtonClassHover": "DTTT_button_text_hover",
		"sButtonText": "Deselect all",
		"mColumns": "all",
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": function( nButton, oConfig ) {
			this.fnSelectNone();
		},
		"fnSelect": function( nButton, oConfig ) {
			if ( this.fnGetSelected().length !== 0 ) {
				$(nButton).removeClass('DTTT_disabled');
			} else {
				$(nButton).addClass('DTTT_disabled');
			}
		},
		"fnComplete": null,
		"fnInit": function( nButton, oConfig ) {
			$(nButton).addClass('DTTT_disabled');
		}
	},
	"ajax": {
		"sAction": "text",
		"sFieldBoundary": "",
		"sFieldSeperator": "\t",
		"sAjaxUrl": "/xhr.php",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_text",
		"sButtonClassHover": "DTTT_button_text_hover",
		"sButtonText": "Ajax button",
		"mColumns": "all",
		"bHeader": true,
		"bFooter": true,
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": function( nButton, oConfig ) {
			var sData = this.fnGetTableData(oConfig);
			$.ajax( {
				"url": oConfig.sAjaxUrl,
				"data": [
					{ "name": "tableData", "value": sData }
				],
				"success": oConfig.fnAjaxComplete,
				"dataType": "json",
				"type": "POST", 
				"cache": false,
				"error": function () {
					alert( "Error detected when sending table data to server" );
				}
			} );
		},
		"fnSelect": null,
		"fnComplete": null,
		"fnInit": null,
		"fnAjaxComplete": function( json ) {
			alert( 'Ajax complete' );
		}
	},
	"collection": {
		"sAction": "collection",
		"sToolTip": "",
		"sButtonClass": "DTTT_button_collection",
		"sButtonClassHover": "DTTT_button_collection_hover",
		"sButtonText": "Collection",
		"fnMouseover": null,
		"fnMouseout": null,
		"fnClick": function( nButton, oConfig ) {
			this._fnCollectionShow(nButton, oConfig);
		},
		"fnSelect": null,
		"fnComplete": null,
		"fnInit": null
	}
};
/*
 *  on* callback parameters:
 *  	1. node - button element
 *  	2. object - configuration object for this button
 *  	3. object - ZeroClipboard reference (flash button only)
 *  	4. string - Returned string from Flash (flash button only - and only on 'complete')
 */


/**
 * @namespace TableTools default settings for initialisation
 */
TableTools.DEFAULTS = {
	"sSwfPath":         "media/swf/copy_cvs_xls_pdf.swf",
	"sRowSelect":       "none",
	"fnPreRowSelect":   null,
	"fnRowSelected":    null,
	"fnRowDeselected":  null,
	"aButtons":         [ "copy", "csv", "xls", "pdf", "print" ]
};


/**
 * Name of this class
 *  @constant CLASS
 *  @type     String
 *  @default  TableTools
 */
TableTools.prototype.CLASS = "TableTools";


/**
 * TableTools version
 *  @constant  VERSION
 *  @type      String
 *  @default   2.0.0
 */
TableTools.VERSION = "2.0.0";
TableTools.prototype.VERSION = TableTools.VERSION;




/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Initialisation
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * Register a new feature with DataTables
 */
if ( typeof $.fn.dataTable == "function" &&
     typeof $.fn.dataTableExt.fnVersionCheck == "function" &&
     $.fn.dataTableExt.fnVersionCheck('1.7.0') )
{
	$.fn.dataTableExt.aoFeatures.push( {
		"fnInit": function( oDTSettings ) {
			var oOpts = typeof oDTSettings.oInit.oTableTools != 'undefined' ? 
				oDTSettings.oInit.oTableTools : {};
			
			var oTT = new TableTools( oDTSettings.oInstance, oOpts );
			TableTools._aInstances.push( oTT );
			
			return oTT.dom.container;
		},
		"cFeature": "T",
		"sFeature": "TableTools"
	} );
}
else
{
	alert( "Warning: TableTools 2 requires DataTables 1.7 or greater - www.datatables.net/download");
}

})(jQuery, window, document);
