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Plugins/pagination/scrolling.js

131 lines
4.2 KiB
JavaScript

/**
* This modification of DataTables' standard two button pagination controls
* adds a little animation effect to the paging action by redrawing the table
* multiple times for each event, each draw progressing by one row until the
* required point in the table is reached.
*
* @name Scrolling navigation
* @summary Show page changes as a redraw of the table, scrolling records.
* @author [Allan Jardine](http://sprymedia.co.uk)
*
* @example
* $(document).ready(function() {
* $('#example').dataTable( {
* "sPaginationType": "scrolling"
* } );
* } );
*/
/* Time between each scrolling frame */
$.fn.dataTableExt.oPagination.iTweenTime = 100;
$.fn.dataTableExt.oPagination.scrolling = {
"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"}, function() {
/* Disallow paging event during a current paging event */
if ( typeof oSettings.iPagingLoopStart != 'undefined' && oSettings.iPagingLoopStart != -1 )
{
return;
}
oSettings.iPagingLoopStart = oSettings._iDisplayStart;
oSettings.iPagingEnd = oSettings._iDisplayStart - oSettings._iDisplayLength;
/* Correct for underrun */
if ( oSettings.iPagingEnd < 0 )
{
oSettings.iPagingEnd = 0;
}
var iTween = $.fn.dataTableExt.oPagination.iTweenTime;
var innerLoop = function () {
if ( oSettings.iPagingLoopStart > oSettings.iPagingEnd ) {
oSettings.iPagingLoopStart--;
oSettings._iDisplayStart = oSettings.iPagingLoopStart;
fnCallbackDraw( oSettings );
setTimeout( function() { innerLoop(); }, iTween );
} else {
oSettings.iPagingLoopStart = -1;
}
};
innerLoop();
} );
oSettings.oApi._fnBindAction( nNext, {action: "next"}, function() {
/* Disallow paging event during a current paging event */
if ( typeof oSettings.iPagingLoopStart != 'undefined' && oSettings.iPagingLoopStart != -1 )
{
return;
}
oSettings.iPagingLoopStart = oSettings._iDisplayStart;
/* Make sure we are not over running the display array */
if ( oSettings._iDisplayStart + oSettings._iDisplayLength < oSettings.fnRecordsDisplay() )
{
oSettings.iPagingEnd = oSettings._iDisplayStart + oSettings._iDisplayLength;
}
var iTween = $.fn.dataTableExt.oPagination.iTweenTime;
var innerLoop = function () {
if ( oSettings.iPagingLoopStart < oSettings.iPagingEnd ) {
oSettings.iPagingLoopStart++;
oSettings._iDisplayStart = oSettings.iPagingLoopStart;
fnCallbackDraw( oSettings );
setTimeout( function() { innerLoop(); }, iTween );
} else {
oSettings.iPagingLoopStart = -1;
}
};
innerLoop();
} );
},
"fnUpdate": function ( oSettings, fnCallbackDraw )
{
if ( !oSettings.aanFeatures.p )
{
return;
}
/* Loop over each instance of the pager */
var an = oSettings.aanFeatures.p;
for ( var i=0, iLen=an.length ; i<iLen ; i++ )
{
if ( an[i].childNodes.length !== 0 )
{
an[i].childNodes[0].className =
( oSettings._iDisplayStart === 0 ) ?
oSettings.oClasses.sPagePrevDisabled : oSettings.oClasses.sPagePrevEnabled;
an[i].childNodes[1].className =
( oSettings.fnDisplayEnd() == oSettings.fnRecordsDisplay() ) ?
oSettings.oClasses.sPageNextDisabled : oSettings.oClasses.sPageNextEnabled;
}
}
}
};