EVOLUTION-NINJA

Edit File: dataTables.keyTable.js

/*! KeyTable 1.2.1

/**

* @summary     KeyTable

* @description Spreadsheet like keyboard navigation for DataTables

* @version     1.2.1

* @file        dataTables.keyTable.js

* @author      SpryMedia Ltd (www.sprymedia.co.uk)

* @contact     www.sprymedia.co.uk/contact

* 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 KeyTable for backwards compatibility. Will be removed in 1.3

var KeyTable;

(function(window, document, undefined) {

var factory = function( $, DataTable ) {

"use strict";

KeyTable = function ( oInit )

{

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* API parameters

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

* Variable: block

* Purpose:  Flag whether or not KeyTable events should be processed

* Scope:    KeyTable - public

this.block = false;

* Variable: event

* Purpose:  Container for all event application methods

* Scope:    KeyTable - public

* Notes:    This object contains all the public methods for adding and removing events - these

*           are dynamically added later on

this.event = {

"remove": {}

};

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* API methods

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

* Function: fnGetCurrentPosition

* Purpose:  Get the currently focused cell's position

* Returns:  array int: [ x, y ]

* Inputs:   void

this.fnGetCurrentPosition = function ()

{

return [ _iOldX, _iOldY ];

};

* Function: fnGetCurrentData

* Purpose:  Get the currently focused cell's data (innerHTML)

* Returns:  string: - data requested

* Inputs:   void

this.fnGetCurrentData = function ()

{

return _nOldFocus.innerHTML;

};

* Function: fnGetCurrentTD

* Purpose:  Get the currently focused cell

* Returns:  node: - focused element

* Inputs:   void

this.fnGetCurrentTD = function ()

{

return _nOldFocus;

};

* Function: fnSetPosition

* Purpose:  Set the position of the focused cell

* Returns:  -

* Inputs:   int:x - x coordinate

*           int:y - y coordinate

* Notes:    Thanks to Rohan Daxini for the basis of this function

this.fnSetPosition = function( x, y )

{

if ( typeof x == 'object' && x.nodeName )

{

_fnSetFocus( x );

}

else

{

_fnSetFocus( _fnCellFromCoords(x, y) );

}

};

* Function: fnBlur

* Purpose:  Blur the current focus

* Returns:  -

* Inputs:   -

this.fnBlur = function()

{

_fnBlur();

};

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* Private parameters

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

* Variable: _nBody

* Purpose:  Body node of the table - cached for renference

* Scope:    KeyTable - private

var _nBody = null;

* Variable:

* Purpose:

* Scope:    KeyTable - private

var _nOldFocus = null;

* Variable: _iOldX and _iOldY

* Purpose:  X and Y coords of the old elemet that was focused on

* Scope:    KeyTable - private

var _iOldX = null;

var _iOldY = null;

* Variable: _that

* Purpose:  Scope saving for 'this' after a jQuery event

* Scope:    KeyTable - private

var _that = null;

* Variable: sFocusClass

* Purpose:  Class that should be used for focusing on a cell

* Scope:    KeyTable - private

var _sFocusClass = "focus";

* Variable: _bKeyCapture

* Purpose:  Flag for should KeyTable capture key events or not

* Scope:    KeyTable - private

var _bKeyCapture = false;

* Variable: _oaoEvents

* Purpose:  Event cache object, one array for each supported event for speed of searching

* Scope:    KeyTable - private

var _oaoEvents = {

"action": [],

"esc": [],

"focus": [],

"blur": []

};

* Variable: _oDatatable

* Purpose:  DataTables settings object for if we are actually using a

*           DataTables table

* Scope:    KeyTable - private

var _oDatatable = null;

var _bForm;

var _nInput;

var _bInputFocused = false;

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* Private methods

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* Key table events

* Function: _fnEventAddTemplate

* Purpose:  Create a function (with closure for sKey) event addition API

* Returns:  function: - template function

* Inputs:   string:sKey - type of event to detect

function _fnEventAddTemplate( sKey )

{

* Function: -

* Purpose:  API function for adding event to cache

* Returns:  -

* Inputs:   1. node:x - target node to add event for

*           2. function:y - callback function to apply

*         or

*           1. int:x - x coord. of target cell (can be null for live events)

*           2. int:y - y coord. of target cell (can be null for live events)

*           3. function:z - callback function to apply

* Notes:    This function is (interally) overloaded (in as much as javascript allows for

*           that) - the target cell can be given by either node or coords.

return function ( x, y, z ) {

if ( (x===null || typeof x == "number") &&

(y===null || typeof y == "number") &&

typeof z == "function" )

{

_fnEventAdd( sKey, x, y, z );

}

else if ( typeof x == "object" && typeof y == "function" )

{

var aCoords = _fnCoordsFromCell( x );

_fnEventAdd( sKey, aCoords[0], aCoords[1], y );

}

else

{

alert( "Unhandable event type was added: x" +x+ "  y:" +y+ "  z:" +z );

}

};

}

* Function: _fnEventRemoveTemplate

* Purpose:  Create a function (with closure for sKey) event removal API

* Returns:  function: - template function

* Inputs:   string:sKey - type of event to detect

function _fnEventRemoveTemplate( sKey )

{

* Function: -

* Purpose:  API function for removing event from cache

* Returns:  int: - number of events removed

* Inputs:   1. node:x - target node to remove event from

*           2. function:y - callback function to apply

*         or

*           1. int:x - x coord. of target cell (can be null for live events)

*           2. int:y - y coord. of target cell (can be null for live events)

*           3. function:z - callback function to remove - optional

* Notes:    This function is (interally) overloaded (in as much as javascript allows for

*           that) - the target cell can be given by either node or coords and the function

*           to remove is optional

return function ( x, y, z ) {

if ( (x===null || typeof arguments[0] == "number") &&

(y===null || typeof arguments[1] == "number" ) )

{

if ( typeof arguments[2] == "function" )

{

_fnEventRemove( sKey, x, y, z );

}

else

{

_fnEventRemove( sKey, x, y );

}

else if ( typeof arguments[0] == "object" )

{

var aCoords = _fnCoordsFromCell( x );

if ( typeof arguments[1] == "function" )

{

_fnEventRemove( sKey, aCoords[0], aCoords[1], y );

}

else

{

_fnEventRemove( sKey, aCoords[0], aCoords[1] );

}

else

{

alert( "Unhandable event type was removed: x" +x+ "  y:" +y+ "  z:" +z );

}

};

}

/* Use the template functions to add the event API functions */

for ( var sKey in _oaoEvents )

{

if ( sKey )

{

this.event[sKey] = _fnEventAddTemplate( sKey );

this.event.remove[sKey] = _fnEventRemoveTemplate( sKey );

}

* Function: _fnEventAdd

* Purpose:  Add an event to the internal cache

* Returns:  -

* Inputs:   string:sType - type of event to add, given by the available elements in _oaoEvents

*           int:x - x-coords to add event to - can be null for "blanket" event

*           int:y - y-coords to add event to - can be null for "blanket" event

*           function:fn - callback function for when triggered

function _fnEventAdd( sType, x, y, fn )

{

_oaoEvents[sType].push( {

"x": x,

"y": y,

"fn": fn

} );

}

* Function: _fnEventRemove

* Purpose:  Remove an event from the event cache

* Returns:  int: - number of matching events removed

* Inputs:   string:sType - type of event to look for

*           node:nTarget - target table cell

*           function:fn - optional - remove this function. If not given all handlers of this

*             type will be removed

function _fnEventRemove( sType, x, y, fn )

{

var iCorrector = 0;

for ( var i=0, iLen=_oaoEvents[sType].length ; i<iLen-iCorrector ; i++ )

{

if ( typeof fn != 'undefined' )

{

if ( _oaoEvents[sType][i-iCorrector].x == x &&

_oaoEvents[sType][i-iCorrector].y == y &&

_oaoEvents[sType][i-iCorrector].fn == fn )

{

_oaoEvents[sType].splice( i-iCorrector, 1 );

iCorrector++;

}

else

{

if ( _oaoEvents[sType][i-iCorrector].x == x &&

_oaoEvents[sType][i-iCorrector].y == y )

{

_oaoEvents[sType].splice( i, 1 );

return 1;

}

return iCorrector;

}

* Function: _fnEventFire

* Purpose:  Look thought the events cache and fire off the event of interest

* Returns:  int:iFired - number of events fired

* Inputs:   string:sType - type of event to look for

*           int:x - x coord of cell

*           int:y - y coord of  ell

* Notes:    It might be more efficient to return after the first event has been tirggered,

*           but that would mean that only one function of a particular type can be

*           subscribed to a particular node.

function _fnEventFire ( sType, x, y )

{

var iFired = 0;

var aEvents = _oaoEvents[sType];

for ( var i=0 ; i<aEvents.length ; i++ )

{

if ( (aEvents[i].x == x     && aEvents[i].y == y    ) ||

(aEvents[i].x === null && aEvents[i].y == y    ) ||

(aEvents[i].x == x     && aEvents[i].y === null ) ||

(aEvents[i].x === null && aEvents[i].y === null )

)

{

aEvents[i].fn( _fnCellFromCoords(x,y), x, y );

iFired++;

}

return iFired;

}

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* Focus functions

* Function: _fnSetFocus

* Purpose:  Set focus on a node, and remove from an old node if needed

* Returns:  -

* Inputs:   node:nTarget - node we want to focus on

*           bool:bAutoScroll - optional - should we scroll the view port to the display

function _fnSetFocus( nTarget, bAutoScroll )

{

/* If node already has focus, just ignore this call */

if ( _nOldFocus == nTarget )

{

return;

}

if ( typeof bAutoScroll == 'undefined' )

{

bAutoScroll = true;

}

/* Remove old focus (with blur event if needed) */

if ( _nOldFocus !== null )

{

_fnRemoveFocus( _nOldFocus );

}

/* Add the new class to highlight the focused cell */

$(nTarget).addClass( _sFocusClass );

$(nTarget).parent().addClass( _sFocusClass );

/* If it's a DataTable then we need to jump the paging to the relevant page */

var oSettings;

if ( _oDatatable )

{

oSettings = _oDatatable;

var iRow = _fnFindDtCell( nTarget )[1];

var bKeyCaptureCache = _bKeyCapture;

/* Page forwards */

while ( iRow >= oSettings.fnDisplayEnd() )

{

if ( oSettings._iDisplayLength >= 0 )

{

/* Make sure we are not over running the display array */

if ( oSettings._iDisplayStart + oSettings._iDisplayLength < oSettings.fnRecordsDisplay() )

{

oSettings._iDisplayStart += oSettings._iDisplayLength;

}

else

{

oSettings._iDisplayStart = 0;

}

_oDatatable.oApi._fnCalculateEnd( oSettings );

}

/* Page backwards */

while ( iRow < oSettings._iDisplayStart )

{

oSettings._iDisplayStart = oSettings._iDisplayLength>=0 ?

oSettings._iDisplayStart - oSettings._iDisplayLength :

if ( oSettings._iDisplayStart < 0 )

{

oSettings._iDisplayStart = 0;

}

_oDatatable.oApi._fnCalculateEnd( oSettings );

}

/* Re-draw the table */

_oDatatable.oApi._fnDraw( oSettings );

/* Restore the key capture */

_bKeyCapture = bKeyCaptureCache;

}

/* Cache the information that we are interested in */

var aNewPos = _fnCoordsFromCell( nTarget );

_nOldFocus = nTarget;

_iOldX = aNewPos[0];

_iOldY = aNewPos[1];

var iViewportHeight, iViewportWidth, iScrollTop, iScrollLeft, iHeight, iWidth, aiPos;

if ( bAutoScroll )

{

/* Scroll the viewport such that the new cell is fully visible in the rendered window */

iViewportHeight = $(window).height();

iViewportWidth = $(window).width();

iScrollTop = $(document).scrollTop();

iScrollLeft = $(document).scrollLeft();

iHeight = nTarget.offsetHeight;

iWidth = nTarget.offsetWidth;

aiPos = _fnGetPos( nTarget );

/* Take account of scrolling in DataTables 1.7 - remove scrolling since that would add to

* the positioning calculation

if ( _oDatatable && typeof oSettings.oScroll != 'undefined' &&

(oSettings.oScroll.sX !== "" || oSettings.oScroll.sY !== "") )

{

aiPos[1] -= $(oSettings.nTable.parentNode).scrollTop();

aiPos[0] -= $(oSettings.nTable.parentNode).scrollLeft();

}

/* Correct viewport positioning for vertical scrolling */

if ( aiPos[1]+iHeight > iScrollTop+iViewportHeight )

{

/* Displayed element if off the bottom of the viewport */

_fnSetScrollTop( aiPos[1]+iHeight - iViewportHeight );

}

else if ( aiPos[1] < iScrollTop )

{

/* Displayed element if off the top of the viewport */

_fnSetScrollTop( aiPos[1] );

}

/* Correct viewport positioning for horizontal scrolling */

if ( aiPos[0]+iWidth > iScrollLeft+iViewportWidth )

{

/* Displayed element is off the bottom of the viewport */

_fnSetScrollLeft( aiPos[0]+iWidth - iViewportWidth );

}

else if ( aiPos[0] < iScrollLeft )

{

/* Displayed element if off the Left of the viewport */

_fnSetScrollLeft( aiPos[0] );

}

/* Take account of scrolling in DataTables 1.7 */

if ( _oDatatable && typeof oSettings.oScroll != 'undefined' &&

(oSettings.oScroll.sX !== "" || oSettings.oScroll.sY !== "") )

{

var dtScrollBody = oSettings.nTable.parentNode;

iViewportHeight = dtScrollBody.clientHeight;

iViewportWidth = dtScrollBody.clientWidth;

iScrollTop = dtScrollBody.scrollTop;

iScrollLeft = dtScrollBody.scrollLeft;

iHeight = nTarget.offsetHeight;

iWidth = nTarget.offsetWidth;

/* Correct for vertical scrolling */

if ( nTarget.offsetTop + iHeight > iViewportHeight+iScrollTop )

{

dtScrollBody.scrollTop = (nTarget.offsetTop + iHeight) - iViewportHeight;

}

else if ( nTarget.offsetTop < iScrollTop )

{

dtScrollBody.scrollTop = nTarget.offsetTop;

}

/* Correct for horizontal scrolling */

if ( nTarget.offsetLeft + iWidth > iViewportWidth+iScrollLeft )

{

dtScrollBody.scrollLeft = (nTarget.offsetLeft + iWidth) - iViewportWidth;

}

else if ( nTarget.offsetLeft < iScrollLeft )

{

dtScrollBody.scrollLeft = nTarget.offsetLeft;

}

/* Focused - so we want to capture the keys */

_fnCaptureKeys();

/* Fire of the focus event if there is one */

_fnEventFire( "focus", _iOldX, _iOldY );

}

* Function: _fnBlur

* Purpose:  Blur focus from the whole table

* Returns:  -

* Inputs:   -

function _fnBlur()

{

_fnRemoveFocus( _nOldFocus );

_iOldX = null;

_iOldY = null;

_nOldFocus = null;

_fnReleaseKeys();

}

* Function: _fnRemoveFocus

* Purpose:  Remove focus from a cell and fire any blur events which are attached

* Returns:  -

* Inputs:   node:nTarget - cell of interest

function _fnRemoveFocus( nTarget )

{

$(nTarget).removeClass( _sFocusClass );

$(nTarget).parent().removeClass( _sFocusClass );

_fnEventFire( "blur", _iOldX, _iOldY );

}

* Function: _fnClick

* Purpose:  Focus on the element that has been clicked on by the user

* Returns:  -

* Inputs:   event:e - click event

function _fnClick ( e )

{

var nTarget = this;

while ( nTarget.nodeName != "TD" )

{

nTarget = nTarget.parentNode;

}

_fnSetFocus( nTarget );

_fnCaptureKeys();

}

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* Key events

* Function: _fnKey

* Purpose:  Deal with a key events, be it moving the focus or return etc.

* Returns:  bool: - allow browser default action

* Inputs:   event:e - key event

function _fnKey ( e )

{

/* If user or system has blocked KeyTable from doing anything, just ignore this event */

if ( _that.block || !_bKeyCapture )

{

return true;

}

/* If a modifier key is pressed (exapct shift), ignore the event */

if ( e.metaKey || e.altKey || e.ctrlKey )

{

return true;

}

var

x, y,

iTableWidth = _nBody.getElementsByTagName('tr')[0].getElementsByTagName('td').length,

iTableHeight;

/* Get table height and width - done here so as to be dynamic (if table is updated) */

if ( _oDatatable )

{

* Locate the current node in the DataTable overriding the old positions - the reason for

* is is that there might have been some DataTables interaction between the last focus and

* now

iTableHeight = _oDatatable.aiDisplay.length;

var aDtPos = _fnFindDtCell( _nOldFocus );

if ( aDtPos === null )

{

/* If the table has been updated such that the focused cell can't be seen - do nothing */

return;

}

_iOldX = aDtPos[ 0 ];

_iOldY = aDtPos[ 1 ];

}

else

{

iTableHeight = _nBody.getElementsByTagName('tr').length;

}

/* Capture shift+tab to match the left arrow key */

var iKey = (e.keyCode == 9 && e.shiftKey) ? -1 : e.keyCode;

switch( iKey )

{

case 13: /* return */

e.preventDefault();

e.stopPropagation();

_fnEventFire( "action", _iOldX, _iOldY );

return true;

case 27: /* esc */

if ( !_fnEventFire( "esc", _iOldX, _iOldY ) )

{

/* Only lose focus if there isn't an escape handler on the cell */

_fnBlur();

return;

}

x = _iOldX;

y = _iOldY;

break;

case -1:

case 37: /* left arrow */

if ( _iOldX > 0 ) {

x = _iOldX - 1;

y = _iOldY;

} else if ( _iOldY > 0 ) {

x = iTableWidth-1;

y = _iOldY - 1;

} else {

/* at start of table */

if ( iKey == -1 && _bForm )

{

/* If we are in a form, return focus to the 'input' element such that tabbing will

* follow correctly in the browser

_bInputFocused = true;

_nInput.focus();

/* This timeout is a little nasty - but IE appears to have some asyhnc behaviour for

* focus

setTimeout( function(){ _bInputFocused = false; }, 0 );

_bKeyCapture = false;

_fnBlur();

return true;

}

else

{

return false;

}

break;

case 38: /* up arrow */

if ( _iOldY > 0 ) {

x = _iOldX;

y = _iOldY - 1;

} else {

return false;

}

break;

case 36: /* home */

x = _iOldX;

y = 0;

break;

case 33: /* page up */

x = _iOldX;

y = _iOldY - 10;

if (y < 0) {

y = 0;

}

break;

case 9: /* tab */

case 39: /* right arrow */

if ( _iOldX < iTableWidth-1 ) {

x = _iOldX + 1;

y = _iOldY;

} else if ( _iOldY < iTableHeight-1 ) {

x = 0;

y = _iOldY + 1;

} else {

/* at end of table */

if ( iKey == 9 && _bForm )

{

/* If we are in a form, return focus to the 'input' element such that tabbing will

* follow correctly in the browser

_bInputFocused = true;

_nInput.focus();

/* This timeout is a little nasty - but IE appears to have some asyhnc behaviour for

* focus

setTimeout( function(){ _bInputFocused = false; }, 0 );

_bKeyCapture = false;

_fnBlur();

return true;

}

else

{

return false;

}

break;

case 40: /* down arrow */

if ( _iOldY < iTableHeight-1 ) {

x = _iOldX;

y = _iOldY + 1;

} else {

return false;

}

break;

case 35: /* end */

x = _iOldX;

y = iTableHeight-1;

break;

case 34: /* page down */

x = _iOldX;

y = _iOldY+10;

if (y > iTableHeight-1) {

y = iTableHeight-1;

}

break;

default: /* Nothing we are interested in */

return true;

}

_fnSetFocus( _fnCellFromCoords(x, y) );

return false;

}

* Function: _fnCaptureKeys

* Purpose:  Start capturing key events for this table

* Returns:  -

* Inputs:   -

function _fnCaptureKeys( )

{

if ( !_bKeyCapture )

{

_bKeyCapture = true;

}

* Function: _fnReleaseKeys

* Purpose:  Stop capturing key events for this table

* Returns:  -

* Inputs:   -

function _fnReleaseKeys( )

{

_bKeyCapture = false;

}

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* Support functions

* Function: _fnCellFromCoords

* Purpose:  Calulate the target TD cell from x and y coordinates

* Returns:  node: - TD target

* Inputs:   int:x - x coordinate

*           int:y - y coordinate

function _fnCellFromCoords( x, y )

{

if ( _oDatatable )

{

if ( typeof _oDatatable.aoData[ _oDatatable.aiDisplay[ y ] ] != 'undefined' )

{

return _oDatatable.aoData[ _oDatatable.aiDisplay[ y ] ].nTr.getElementsByTagName('td')[x];

}

else

{

return null;

}

else

{

return $('tr:eq('+y+')>td:eq('+x+')', _nBody )[0];

}

* Function: _fnCoordsFromCell

* Purpose:  Calculate the x and y position in a table from a TD cell

* Returns:  array[2] int: [x, y]

* Inputs:   node:n - TD cell of interest

* Notes:    Not actually interested in this for DataTables since it might go out of date

function _fnCoordsFromCell( n )

{

if ( _oDatatable )

{

return [

$('td', n.parentNode).index(n),

$('tr', n.parentNode.parentNode).index(n.parentNode) + _oDatatable._iDisplayStart

];

}

else

{

return [

$('td', n.parentNode).index(n),

$('tr', n.parentNode.parentNode).index(n.parentNode)

];

}

* Function: _fnSetScrollTop

* Purpose:  Set the vertical scrolling position

* Returns:  -

* Inputs:   int:iPos - scrolltop

* Notes:    This is so nasty, but without browser detection you can't tell which you should set

*           So on browsers that support both, the scroll top will be set twice. I can live with

*           that :-)

function _fnSetScrollTop( iPos )

{

document.documentElement.scrollTop = iPos;

document.body.scrollTop = iPos;

}

* Function: _fnSetScrollLeft

* Purpose:  Set the horizontal scrolling position

* Returns:  -

* Inputs:   int:iPos - scrollleft

function _fnSetScrollLeft( iPos )

{

document.documentElement.scrollLeft = iPos;

document.body.scrollLeft = iPos;

}

* Function: _fnGetPos

* Purpose:  Get the position of an object on the rendered page

* Returns:  array[2] int: [left, right]

* Inputs:   node:obj - element of interest

function _fnGetPos ( obj )

{

var iLeft = 0;

var iTop = 0;

if (obj.offsetParent)

{

iLeft = obj.offsetLeft;

iTop = obj.offsetTop;

obj = obj.offsetParent;

while (obj)

{

iLeft += obj.offsetLeft;

iTop += obj.offsetTop;

obj = obj.offsetParent;

}

return [iLeft,iTop];

}

* Function: _fnFindDtCell

* Purpose:  Get the coords. of a cell from the DataTables internal information

* Returns:  array[2] int: [x, y] coords. or null if not found

* Inputs:   node:nTarget - the node of interest

function _fnFindDtCell( nTarget )

{

for ( var i=0, iLen=_oDatatable.aiDisplay.length ; i<iLen ; i++ )

{

var nTr = _oDatatable.aoData[ _oDatatable.aiDisplay[i] ].nTr;

var nTds = nTr.getElementsByTagName('td');

for ( var j=0, jLen=nTds.length ; j<jLen ; j++ )

{

if ( nTds[j] == nTarget )

{

return [ j, i ];

}

return null;

}

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* Initialisation

* Function: _fnInit

* Purpose:  Initialise the KeyTable

* Returns:  -

* Inputs:   object:oInit - optional - Initalisation object with the following parameters:

*   array[2] int:focus - x and y coordinates of the initial target

*     or

*     node:focus - the node to set initial focus on

*   node:table - the table to use, if not given, first table with class 'KeyTable' will be used

*   string:focusClass - focusing class to give to table elements

*           object:that - focus

*   bool:initScroll - scroll the view port on load, default true

*   int:tabIndex - the tab index to give the hidden input element

function _fnInit( table, datatable, oInit, that )

{

/* Save scope */

_that = that;

/* Capture undefined initialisation and apply the defaults */

if ( typeof oInit == 'undefined' ) {

oInit = {};

}

if ( typeof oInit.focus == 'undefined' ) {

oInit.focus = [0,0];

}

oInit.table = table;

$(oInit.table).addClass('KeyTable');

if ( typeof oInit.focusClass != 'undefined' ) {

_sFocusClass = oInit.focusClass;

}

if ( typeof datatable != 'undefined' ) {

_oDatatable = datatable;

}

if ( typeof oInit.initScroll == 'undefined' ) {

oInit.initScroll = true;

}

if ( typeof oInit.form == 'undefined' ) {

oInit.form = false;

}

_bForm = oInit.form;

/* Cache the tbody node of interest */

_nBody = oInit.table.getElementsByTagName('tbody')[0];

/* If the table is inside a form, then we need a hidden input box which can be used by the

* browser to catch the browser tabbing for our table

if ( _bForm )

{

var nDiv = document.createElement('div');

_nInput = document.createElement('input');

nDiv.style.height = "1px"; /* Opera requires a little something */

nDiv.style.width = "0px";

nDiv.style.overflow = "hidden";

if ( typeof oInit.tabIndex != 'undefined' )

{

_nInput.tabIndex = oInit.tabIndex;

}

nDiv.appendChild(_nInput);

oInit.table.parentNode.insertBefore( nDiv, oInit.table.nextSibling );

$(_nInput).focus( function () {

/* See if we want to 'tab into' the table or out */

if ( !_bInputFocused )

{

_bKeyCapture = true;

_bInputFocused = false;

if ( typeof oInit.focus.nodeName != "undefined" )

{

_fnSetFocus( oInit.focus, oInit.initScroll );

}

else

{

_fnSetFocus( _fnCellFromCoords( oInit.focus[0], oInit.focus[1]), oInit.initScroll );

}

/* Need to interup the thread for this to work */

setTimeout( function() { _nInput.blur(); }, 0 );

}

} );

_bKeyCapture = false;

}

else

{

/* Set the initial focus on the table */

if ( typeof oInit.focus.nodeName != "undefined" )

{

_fnSetFocus( oInit.focus, oInit.initScroll );

}

else

{

_fnSetFocus( _fnCellFromCoords( oInit.focus[0], oInit.focus[1]), oInit.initScroll );

}

_fnCaptureKeys();

}

/* Add event listeners */

$(document).bind( "keydown", _fnKey );

if ( _oDatatable )

{

$(_oDatatable.nTable).on( 'click', 'td', _fnClick );

}

else

{

$(_nBody).on( 'click', 'td', _fnClick );

}

/* Loose table focus when click outside the table */

$(document).click( function(e) {

var nTarget = e.target;

var bTableClick = false;

while ( nTarget )

{

if ( nTarget == oInit.table )

{

bTableClick = true;

break;

}

nTarget = nTarget.parentNode;

}

if ( !bTableClick )

{

_fnBlur();

}

} );

}

var table, datatable;

if ( oInit === undefined ) {

table = $('table.KeyTable')[0];

datatable = null;

}

else if ( $.isPlainObject( oInit ) ) {

table = oInit.table;

datatable = oInit.datatable;

}

else {

datatable = new $.fn.dataTable.Api( oInit ).settings()[0];

table = datatable.nTable;

}

/* Initialise our new object */

_fnInit( table, datatable, oInit, this );

};

KeyTable.version = "1.2.1";

$.fn.dataTable.KeyTable = KeyTable;

$.fn.DataTable.KeyTable = KeyTable;

return KeyTable;

}; // /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.KeyTable ) {

// Otherwise simply initialise as normal, stopping multiple evaluation

factory( jQuery, jQuery.fn.dataTable );

}

})(window, document);