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