Subversion-Projekte lars-tiefland.ci

/**
 * 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;
                        }
                }
        }
};