/*
* Variable: oPagination
* Purpose:
* Scope: jQuery.fn.dataTableExt
*/
$.extend( DataTable.ext.oPagination, {
/*
* Variable: two_button
* Purpose: Standard two button (forward/back) pagination
* Scope: jQuery.fn.dataTableExt.oPagination
*/
"two_button": {
/*
* Function: oPagination.two_button.fnInit
* Purpose: Initialise dom elements required for pagination with forward/back buttons only
* Returns: -
* Inputs: object:oSettings - dataTables settings object
* node:nPaging - the DIV which contains this pagination control
* function:fnCallbackDraw - draw function which must be called on update
*/
"fnInit": function ( oSettings, nPaging, fnCallbackDraw )
{
var oLang = oSettings.oLanguage.oPaginate;
var oClasses = oSettings.oClasses;
var fnClickHandler = function ( e ) {
if ( oSettings.oApi._fnPageChange( oSettings, e.data.action ) )
{
fnCallbackDraw( oSettings );
}
};
var sAppend = (!oSettings.bJUI) ?
'<a class="'+oSettings.oClasses.sPagePrevDisabled+'" tabindex="'+oSettings.iTabIndex+'" role="button">'+oLang.sPrevious+'</a>'+
'<a class="'+oSettings.oClasses.sPageNextDisabled+'" tabindex="'+oSettings.iTabIndex+'" role="button">'+oLang.sNext+'</a>'
:
'<a class="'+oSettings.oClasses.sPagePrevDisabled+'" tabindex="'+oSettings.iTabIndex+'" role="button"><span class="'+oSettings.oClasses.sPageJUIPrev+'"></span></a>'+
'<a class="'+oSettings.oClasses.sPageNextDisabled+'" tabindex="'+oSettings.iTabIndex+'" role="button"><span class="'+oSettings.oClasses.sPageJUINext+'"></span></a>';
$(nPaging).append( sAppend );
var els = $('a', nPaging);
var nPrevious = els[0],
nNext = els[1];
oSettings.oApi._fnBindAction( nPrevious, {action: "previous"}, fnClickHandler );
oSettings.oApi._fnBindAction( nNext, {action: "next"}, fnClickHandler );
/* ID the first elements only */
if ( !oSettings.aanFeatures.p )
{
nPaging.id = oSettings.sTableId+'_paginate';
nPrevious.id = oSettings.sTableId+'_previous';
nNext.id = oSettings.sTableId+'_next';
nPrevious.setAttribute('aria-controls', oSettings.sTableId);
nNext.setAttribute('aria-controls', oSettings.sTableId);
}
},
/*
* Function: oPagination.two_button.fnUpdate
* Purpose: Update the two button pagination at the end of the draw
* Returns: -
* Inputs: object:oSettings - dataTables settings object
* function:fnCallbackDraw - draw function to call on page change
*/
"fnUpdate": function ( oSettings, fnCallbackDraw )
{
if ( !oSettings.aanFeatures.p )
{
return;
}
var oClasses = oSettings.oClasses;
var an = oSettings.aanFeatures.p;
var nNode;
/* Loop over each instance of the pager */
for ( var i=0, iLen=an.length ; i<iLen ; i++ )
{
nNode = an[i].firstChild;
if ( nNode )
{
/* Previous page */
nNode.className = ( oSettings._iDisplayStart === 0 ) ?
oClasses.sPagePrevDisabled : oClasses.sPagePrevEnabled;
/* Next page */
nNode = nNode.nextSibling;
nNode.className = ( oSettings.fnDisplayEnd() == oSettings.fnRecordsDisplay() ) ?
oClasses.sPageNextDisabled : oClasses.sPageNextEnabled;
}
}
}
},
/*
* Variable: iFullNumbersShowPages
* Purpose: Change the number of pages which can be seen
* Scope: jQuery.fn.dataTableExt.oPagination
*/
"iFullNumbersShowPages": 5,
/*
* Variable: full_numbers
* Purpose: Full numbers pagination
* Scope: jQuery.fn.dataTableExt.oPagination
*/
"full_numbers": {
/*
* Function: oPagination.full_numbers.fnInit
* Purpose: Initialise dom elements required for pagination with a list of the pages
* Returns: -
* Inputs: object:oSettings - dataTables settings object
* node:nPaging - the DIV which contains this pagination control
* function:fnCallbackDraw - draw function which must be called on update
*/
"fnInit": function ( oSettings, nPaging, fnCallbackDraw )
{
var oLang = oSettings.oLanguage.oPaginate;
var oClasses = oSettings.oClasses;
var fnClickHandler = function ( e ) {
if ( oSettings.oApi._fnPageChange( oSettings, e.data.action ) )
{
fnCallbackDraw( oSettings );
}
};
$(nPaging).append(
'<a tabindex="'+oSettings.iTabIndex+'" class="'+oClasses.sPageButton+" "+oClasses.sPageFirst+'">'+oLang.sFirst+'</a>'+
'<a tabindex="'+oSettings.iTabIndex+'" class="'+oClasses.sPageButton+" "+oClasses.sPagePrevious+'">'+oLang.sPrevious+'</a>'+
'<span></span>'+
'<a tabindex="'+oSettings.iTabIndex+'" class="'+oClasses.sPageButton+" "+oClasses.sPageNext+'">'+oLang.sNext+'</a>'+
'<a tabindex="'+oSettings.iTabIndex+'" class="'+oClasses.sPageButton+" "+oClasses.sPageLast+'">'+oLang.sLast+'</a>'
);
var els = $('a', nPaging);
var nFirst = els[0],
nPrev = els[1],
nNext = els[2],
nLast = els[3];
oSettings.oApi._fnBindAction( nFirst, {action: "first"}, fnClickHandler );
oSettings.oApi._fnBindAction( nPrev, {action: "previous"}, fnClickHandler );
oSettings.oApi._fnBindAction( nNext, {action: "next"}, fnClickHandler );
oSettings.oApi._fnBindAction( nLast, {action: "last"}, fnClickHandler );
/* ID the first elements only */
if ( !oSettings.aanFeatures.p )
{
nPaging.id = oSettings.sTableId+'_paginate';
nFirst.id =oSettings.sTableId+'_first';
nPrev.id =oSettings.sTableId+'_previous';
nNext.id =oSettings.sTableId+'_next';
nLast.id =oSettings.sTableId+'_last';
}
},
/*
* Function: oPagination.full_numbers.fnUpdate
* Purpose: Update the list of page buttons shows
* Returns: -
* Inputs: object:oSettings - dataTables settings object
* function:fnCallbackDraw - draw function to call on page change
*/
"fnUpdate": function ( oSettings, fnCallbackDraw )
{
if ( !oSettings.aanFeatures.p )
{
return;
}
var iPageCount = DataTable.ext.oPagination.iFullNumbersShowPages;
var iPageCountHalf = Math.floor(iPageCount / 2);
var iPages = Math.ceil((oSettings.fnRecordsDisplay()) / oSettings._iDisplayLength);
var iCurrentPage = Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1;
var sList = "";
var iStartButton, iEndButton, i, iLen;
var oClasses = oSettings.oClasses;
var anButtons, anStatic, nPaginateList, nNode;
var an = oSettings.aanFeatures.p;
var fnBind = function (j) {
oSettings.oApi._fnBindAction( this, {"page": j+iStartButton-1}, function(e) {
/* Use the information in the element to jump to the required page */
oSettings.oApi._fnPageChange( oSettings, e.data.page );
fnCallbackDraw( oSettings );
e.preventDefault();
} );
};
/* Pages calculation */
if ( oSettings._iDisplayLength === -1 )
{
iStartButton = 1;
iEndButton = 1;
iCurrentPage = 1;
}
else if (iPages < iPageCount)
{
iStartButton = 1;
iEndButton = iPages;
}
else if (iCurrentPage <= iPageCountHalf)
{
iStartButton = 1;
iEndButton = iPageCount;
}
else if (iCurrentPage >= (iPages - iPageCountHalf))
{
iStartButton = iPages - iPageCount + 1;
iEndButton = iPages;
}
else
{
iStartButton = iCurrentPage - Math.ceil(iPageCount / 2) + 1;
iEndButton = iStartButton + iPageCount - 1;
}
/* Build the dynamic list */
for ( i=iStartButton ; i<=iEndButton ; i++ )
{
sList += (iCurrentPage !== i) ?
'<a tabindex="'+oSettings.iTabIndex+'" class="'+oClasses.sPageButton+'">'+oSettings.fnFormatNumber(i)+'</a>' :
'<a tabindex="'+oSettings.iTabIndex+'" class="'+oClasses.sPageButtonActive+'">'+oSettings.fnFormatNumber(i)+'</a>';
}
/* Loop over each instance of the pager */
for ( i=0, iLen=an.length ; i<iLen ; i++ )
{
nNode = an[i];
if ( !nNode.hasChildNodes() )
{
continue;
}
/* Build up the dynamic list first - html and listeners */
$('span:eq(0)', nNode)
.html( sList )
.children('a').each( fnBind );
/* Update the permanent button's classes */
anButtons = nNode.getElementsByTagName('a');
anStatic = [
anButtons[0], anButtons[1],
anButtons[anButtons.length-2], anButtons[anButtons.length-1]
];
$(anStatic).removeClass( oClasses.sPageButton+" "+oClasses.sPageButtonActive+" "+oClasses.sPageButtonStaticDisabled );
$([anStatic[0], anStatic[1]]).addClass(
(iCurrentPage==1) ?
oClasses.sPageButtonStaticDisabled :
oClasses.sPageButton
);
$([anStatic[2], anStatic[3]]).addClass(
(iPages===0 || iCurrentPage===iPages || oSettings._iDisplayLength===-1) ?
oClasses.sPageButtonStaticDisabled :
oClasses.sPageButton
);
}
}
}
} );
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