Файл: datatables/media/src/core/core.page.js
Строк: 180
<?php
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Note that most of the paging logic is done in
* DataTable.ext.oPagination
*/
/**
* Generate the node required for default pagination
* @param {object} oSettings dataTables settings object
* @returns {node} Pagination feature node
* @memberof DataTable#oApi
*/
function _fnFeatureHtmlPaginate ( oSettings )
{
if ( oSettings.oScroll.bInfinite )
{
return null;
}
var nPaginate = document.createElement( 'div' );
nPaginate.className = oSettings.oClasses.sPaging+oSettings.sPaginationType;
DataTable.ext.oPagination[ oSettings.sPaginationType ].fnInit( oSettings, nPaginate,
function( oSettings ) {
_fnCalculateEnd( oSettings );
_fnDraw( oSettings );
}
);
/* Add a draw callback for the pagination on first instance, to update the paging display */
if ( !oSettings.aanFeatures.p )
{
oSettings.aoDrawCallback.push( {
"fn": function( oSettings ) {
DataTable.ext.oPagination[ oSettings.sPaginationType ].fnUpdate( oSettings, function( oSettings ) {
_fnCalculateEnd( oSettings );
_fnDraw( oSettings );
} );
},
"sName": "pagination"
} );
}
return nPaginate;
}
/**
* Alter the display settings to change the page
* @param {object} oSettings dataTables settings object
* @param {string|int} mAction Paging action to take: "first", "previous", "next" or "last"
* or page number to jump to (integer)
* @returns {bool} true page has changed, false - no change (no effect) eg 'first' on page 1
* @memberof DataTable#oApi
*/
function _fnPageChange ( oSettings, mAction )
{
var iOldStart = oSettings._iDisplayStart;
if ( typeof mAction === "number" )
{
oSettings._iDisplayStart = mAction * oSettings._iDisplayLength;
if ( oSettings._iDisplayStart > oSettings.fnRecordsDisplay() )
{
oSettings._iDisplayStart = 0;
}
}
else if ( mAction == "first" )
{
oSettings._iDisplayStart = 0;
}
else if ( mAction == "previous" )
{
oSettings._iDisplayStart = oSettings._iDisplayLength>=0 ?
oSettings._iDisplayStart - oSettings._iDisplayLength :
0;
/* Correct for under-run */
if ( oSettings._iDisplayStart < 0 )
{
oSettings._iDisplayStart = 0;
}
}
else if ( mAction == "next" )
{
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;
}
}
else if ( mAction == "last" )
{
if ( oSettings._iDisplayLength >= 0 )
{
var iPages = parseInt( (oSettings.fnRecordsDisplay()-1) / oSettings._iDisplayLength, 10 ) + 1;
oSettings._iDisplayStart = (iPages-1) * oSettings._iDisplayLength;
}
else
{
oSettings._iDisplayStart = 0;
}
}
else
{
_fnLog( oSettings, 0, "Unknown paging action: "+mAction );
}
$(oSettings.oInstance).trigger('page', oSettings);
return iOldStart != oSettings._iDisplayStart;
}
?>