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/*! KeyTable 1.2.1
* ©2010-2014 SpryMedia Ltd - datatables.net/license
*/
/**
* @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
* @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 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 :
0;
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);
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