/*
 * jTPS - table sorting, pagination, and animated page scrolling
 *	version 0.1
 * Author: Jim Palmer
 * Released under MIT license.
 */
(function($) {
	$.fn.initTable = function ( opt ) {
		$(this).data('tableSettings', $.extend({
				perPages:			[5, 6, 10, 20, 50, 'ALL'],				// the "show per page" selection
				perPageText:		'',//'Show per page:',						// text that appears before perPages links
				perPageDelim:		'<span style="color:#ccc;">|</span>',	// text or dom node that deliminates each perPage link 
				perPageSeperator:	'..',									// text or dom node that deliminates split in select page links
				scrollDelay:		30,										// delay (in ms) between steps in anim. - IE has trouble showing animation with < 30ms delay
				scrollStep:			1										// how many tr's are scrolled per step in the animated vertical pagination scrolling
			}, opt));
		return this;				// chainable
	};
	$.fn.controlTable = function ( tdIndex, desc, page, perPage ) {

		tdIndex = tdIndex || 0;
		
		// generic pass-through object + other initial variables
		var pT = $(this), page = page || 1, perPages = $(this).data('tableSettings').perPages, perPage = perPage || perPages[0];

		// append jTPS class "stamp"
		$(this).addClass('jTPS')

		// build tbody>tr>td structure for sorting
		var display = []; 
		$('tbody tr', this).each(
			function (trIndex) { 
				var tr = [];
				$(this).find('td').each( 
					function () {
						tr.push( $(this).html() );
					}
				);
				display.push( tr );
			}
		);
		
		// intelligently sort (natural sort) through the array elements based off the index of the current row cell count
		display = display.sort( 
			function(a, b) {
				// setup temp-scope variables for comparison evauluation
				var x = a[tdIndex].toString().toLowerCase(), y = b[tdIndex].toString().toLowerCase(),
					nC = String.fromCharCode(0), 
					xN = x.replace(/([-]{0,1}[0-9.]{1,})/g, nC + '$1' + nC).split(nC),
					yN = y.replace(/([-]{0,1}[0-9.]{1,})/g, nC + '$1' + nC).split(nC);
				// sort by charIndex - i.e. natural sorting
				for ( var cLoc=0, numS = Math.max( xN.length, yN.length ); cLoc < numS; cLoc++ ) {
					if ( ( parseFloat( xN[cLoc] ) || xN[cLoc] ) < ( parseFloat( yN[cLoc] ) || yN[cLoc] ) )
						return -1;
					else if ( ( parseFloat( xN[cLoc] ) || xN[cLoc] ) > ( parseFloat( yN[cLoc] ) || yN[cLoc] ) )
						return 1;
				}
				return 0;
			}
		);
		
		// if descending, reverse the already sorted array
		if (desc) display = display.reverse();

		// re-process the table data
		$('tbody tr', this).each(
			function (trIndex) { 
				$(this).find('td').each( 
					function (tdIndex) {
						if ( display[trIndex][tdIndex] !== undefined )
							$(this).html( display[trIndex][tdIndex] );
					}
				);
			}
		); 

		// ensure browser-formated widths for each column
		$('thead td', this).each(function () { $(this).css('width', $(this).width()); });

		// clear prior pagination
		$('tbody tr.hideTR', this).removeClass('hideTR');
		// paginate the result
		if ( display.length > perPage )
			$('tbody tr:gt(' + (perPage - 1) + ')', this).addClass('hideTR');

		// hilight the sorted column header
		$('thead .sortDesc, thead .sortAsc').removeClass('sortDesc').removeClass('sortAsc');
		$('thead td:eq(' + tdIndex + ')', this).addClass( desc ? 'sortDesc' : 'sortAsc' );

		// hilight the sorted column
		$('tbody', this).find('td.sortedColumn').removeClass('sortedColumn');
		$('tbody tr', this).each( function () { $('td:eq(' + tdIndex + ')', this).addClass('sortedColumn'); } );

		// bind sort functionality to theader onClicks
		$('thead td[sort]', this).each(
			function (tdInd) {
				$(this).addClass('sortableHeader').unbind('click').bind('click',
					function () {
						pT.controlTable( tdInd, ( ( desc && tdInd == tdIndex ) ? false : true ), 1, perPage );
					}
				);
			}
		);

		// bind mouseover for each tbody row and change cell (td) hover style
		$('tbody tr', this).unbind('mouseover mouseout').bind('mouseover mouseout', 
			function (e) {
				e.type == 'mouseover' ? $(this).children('td').addClass('hilightRow') : $(this).children('td').removeClass('hilightRow');
			}
		);

		// add perPage selection link + delim dom node
		$('tfoot .selectPerPage', this).empty();
		var pageSel = perPages.length;
		
		
		
		while ( pageSel-- ) $('tfoot .selectPerPage', this).prepend( ( (pageSel > 0) ? $(this).data('tableSettings').perPageDelim : '' ) + '<span class="perPageSelector">' + perPages[pageSel] + '</span>' );
		//jeremy's code for next button
		//if ( display.length > perPage ){
		//add before pagination
		//$('tfoot .selectPerPage', this).append('<div class="nextBtn" style="display:block; float:right; line-height:25px; vertical-align:middle; white-space:nowrap;" onmouseover="makeRed();" onmouseout="makeWhite();" >&gt;&gt;</div>'); }
		//add inside pagination
		//$('tfoot tr td', this).prepend('<div class="nextBtn" style="display:block; float:right; line-height:25px; vertical-align:middle; white-space:nowrap;" onmouseover="makeRed();" onmouseout="makeWhite();" >&gt;&gt;</div>'); }
		
		
		//jeremy's code for prev button
		if ( display.length > perPage ){
		// add before pagination
		$('tfoot .selectPerPage', this).append('<div class="prevBtn" style="display:block;" onmouseover="makePrevRed();" onmouseout="makePrevWhite();" >&lt;&lt;</div>'); 
		$('tfoot .selectPerPage', this).append('<div class="nextBtn" style="display:block;" onmouseover="makeRed();" onmouseout="makeWhite();" >&gt;&gt;</div>'); }
		//add after pagination
		//$('tfoot tr td', this).append('<div class="prevBtn" style="display:block;" onmouseover="makePrevRed();" onmouseout="makePrevWhite();" >&lt;&lt;</div>'); }
		
		// add pagination links
		$('tfoot .pagination', this).empty();
		var pages = (perPage >= display.length) ? 0 : Math.ceil( display.length / perPage ), totalPages = pages;
		while ( pages-- ) $('tfoot .pagination', this).prepend( '<div class="pageSelector">' + ( pages + 1 ) + '</div>' );
		
		// arrange the pagination - if really long
		var drawPageSelectors = function ( target, page ) {
			var pageCount = $('tfoot .pageSelector').length;
			$('tfoot .pageSelector.hidePageSelector', target).removeClass('hidePageSelector');
			$('tfoot .pageSelector.hilightPageSelector', target).removeClass('hilightPageSelector');
			$('tfoot .pageSelectorSeperator', target).remove();
			$('tfoot .pageSelector:lt(' + ( ( page > ( pageCount - 4 ) ) ? ( pageCount - 5 ) : ( page - 2 ) ) + '):not(:first)', target).addClass('hidePageSelector')
				.eq(0).after( '<div class="pageSelectorSeperator">' + $(target).data('tableSettings').perPageSeperator + '</div>' );
			$('tfoot .pageSelector:gt(' + ( ( page < 4 ) ? 4 : page ) + '):not(:last)', target).addClass('hidePageSelector')
				.eq(0).after( '<div class="pageSelectorSeperator">' + $(target).data('tableSettings').perPageSeperator + '</div>' );
			$('tfoot .pageSelector:eq(' + ( page - 1 ) + ')', target).addClass('hilightPageSelector');
			$('tfoot .pageSelectorSeperator', target).css( 'width', $('tfoot .pageSelector:last', target).width() );

		};
		drawPageSelectors( this, page || 1 );
		// auto-adjust the pageSelector widths
		$('tfoot .pageSelector', this).css( 'width', $('tfoot .pageSelector:last', this).width() );

		// prepend the instructions and attach select hover and click events
		$('tfoot .selectPerPage', this).prepend( $(this).data('tableSettings').perPageText ).find('.perPageSelector').each(
			function () {
				if ( ( parseInt($(this).html()) || display.length ) == perPage )
					$(this).css('fontWeight', 'bold');
				else {
					$(this).bind('mouseover mouseout', function (e) { e.type == 'mouseover' ? $(this).addClass('perPageHilight') : $(this).removeClass('perPageHilight'); });
					
					$(this).bind('click', function () { pT.controlTable( tdIndex, 0, 1, ( parseInt($(this).html()) || display.length ) ); });
				}
			}
		);
		// remove the pager title if no pages necessary
		if ( perPage >= display.length )
		{
			$('tfoot .paginationTitle', this).css('display','none');
			
		} else {
			//$('tfoot .paginationTitle', this).css('display','');
			//perminatnly remove pageinationTitle
			$('tfoot .paginationTitle', this).css('display','none');
			
		}
		// show the correct paging status
		var cPos = $('tbody tr:not(.hideTR):first', this).prevAll().length, ePos = $('tbody tr:not(.hideTR)', this).length;
		$('tfoot .status', this).html(
			'Showing ' + ( cPos + 1 ) + ' - ' + ( cPos + ePos ) + ' of ' + display.length);

		// bind the pagination onclick
		$('tfoot .pagination .pageSelector', this).each(
			function () {
				$(this).bind('click',
					function () {
						
						
						// re-align the pagination
						drawPageSelectors( pT, parseInt( $(this).html() ) );
						
						// really stop all animations
						$(this).parent().queue( "fx", [] ).stop();

						// setup the pagination variables
						var beginPos = $('tbody tr:not(.hideTR):first', pT).prevAll().length;						
						var endPos = ( ( parseInt( $(this).html() ) - 1 ) * perPage );
						
						// set the steps to be exponential for all the page scroll difference - i.e. faster for more pages to scroll
						var sStep = $(pT).data('tableSettings').scrollStep * Math.abs( ( endPos - beginPos ) / perPage );
						if ( sStep > perPage ) sStep = perPage;
						var steps = Math.ceil( Math.abs( beginPos - endPos ) / sStep );

						// start scrolling
						while ( steps-- ) {
							$(this).parent().animate({'opacity':1}, $(pT).data('tableSettings').scrollDelay,
								function () {
									// reset the scrollStep for the remaining items
									if ( $(this).queue("fx").length == 0 )
										sStep = ( Math.abs( beginPos - endPos ) % sStep ) || sStep;
									if ( beginPos > endPos ) {				// scoll up
										$('tbody tr:not(.hideTR):first', pT).prevAll(':lt(' + sStep + ')').removeClass('hideTR');
										if ( $('tbody tr:not(.hideTR)', pT).length > perPage )
											$('tbody tr:not(.hideTR):last', pT).prevAll(':lt(' + ( sStep - 1 ) + ')').andSelf().addClass('hideTR');
										// if scrolling up from less rows than perPage - compensate if < perPage
										var currRows =  $('tbody tr:not(.hideTR)', pT).length;
										if ( currRows < perPage )
											$('tbody tr:not(.hideTR):last', pT).nextAll(':lt(' + ( perPage - currRows ) + ')').removeClass('hideTR');
									} else {								// scroll down
										var endPoint = $('tbody tr:not(.hideTR):last', pT);
										$('tbody tr:not(.hideTR):lt(' + sStep + ')', pT).addClass('hideTR');
										$(endPoint).nextAll(':lt(' + sStep + ')').removeClass('hideTR');
									}
									// update status bar
									var cPos = $('tbody tr:not(.hideTR):first', pT).prevAll().length,
										ePos = $('tbody tr:not(.hideTR)', pT).length;
									$('tfoot .status', pT).html(
										'Showing ' + ( cPos + 1 ) + ' - ' + ( cPos + ePos ) + ' of ' + display.length + '' );
								}
							);
						}

					}
				);
			}
		);
		//next Btn code
		$('.nextBtn', this).each(
			function () {				
				$(this).bind('click',
					function () 
					{
						// get table to forward pagination
						
						var currentTable = 'currentTable';
						var currentPage = $(this).parent().parent().children('.pagination').children('.hilightPageSelector').html();
						var totalPages = $(this).parent().parent().children('.pagination').children('.pageSelector').size();
						//var currentPage = $(this).parent().children('.pagination').children('.hilightPageSelector').html();
						//var totalPages = $(this).parent().children('.pagination').children('.pageSelector').size();
						//alert('currentPage ' + currentPage + '  totalPages ' + totalPages);
						var newPage = (parseInt( currentPage )) + 1;
						//alert('newPage ' + newPage);
						if ((parseInt( currentPage )) < (parseInt( totalPages ))){
							//alert(currentPage + ' < ' + totalPages + '   pT:' + pT + '   newPage:' + newPage);
							drawPageSelectors( pT, newPage );
	
						} else {
							newPage = 1;
							drawPageSelectors( pT, 1 );
							//alert('else' + '   pT:' + pT + '   newPage:' + newPage);
						}
						var beginPos = $('tbody tr:not(.hideTR):first', pT).prevAll().length;						
						var endPos = ( ( parseInt( newPage ) - 1 ) * perPage );
			
						// set the steps to be exponential for all the page scroll difference - i.e. faster for more pages to scroll
						var sStep = $(pT).data('tableSettings').scrollStep * Math.abs( ( endPos - beginPos ) / perPage );
						if ( sStep > perPage ) sStep = perPage;
						var steps = Math.ceil( Math.abs( beginPos - endPos ) / sStep );
						
						
						
						// start scrolling
						while ( steps-- ) {
							//$(this).parent().animate({'opacity':1}, $(pT).data('tableSettings').scrollDelay,
							$(this).parent().parent().children('.pagination').animate({'opacity':1}, $(pT).data('tableSettings').scrollDelay,
								function () {
									// reset the scrollStep for the remaining items
									if ( $(this).queue("fx").length == 0 )
										sStep = ( Math.abs( beginPos - endPos ) % sStep ) || sStep;
									if ( beginPos > endPos ) {				// scoll up
										$('tbody tr:not(.hideTR):first', pT).prevAll(':lt(' + sStep + ')').removeClass('hideTR');
										if ( $('tbody tr:not(.hideTR)', pT).length > perPage )
											$('tbody tr:not(.hideTR):last', pT).prevAll(':lt(' + ( sStep - 1 ) + ')').andSelf().addClass('hideTR');
										// if scrolling up from less rows than perPage - compensate if < perPage
										var currRows =  $('tbody tr:not(.hideTR)', pT).length;
										if ( currRows < perPage )
											$('tbody tr:not(.hideTR):last', pT).nextAll(':lt(' + ( perPage - currRows ) + ')').removeClass('hideTR');
									} else {								// scroll down
										var endPoint = $('tbody tr:not(.hideTR):last', pT);
										$('tbody tr:not(.hideTR):lt(' + sStep + ')', pT).addClass('hideTR');
										$(endPoint).nextAll(':lt(' + sStep + ')').removeClass('hideTR');
									}
									// update status bar
									var cPos = $('tbody tr:not(.hideTR):first', pT).prevAll().length,
										ePos = $('tbody tr:not(.hideTR)', pT).length;
									$('tfoot .status', pT).html(
										'Showing ' + ( cPos + 1 ) + ' - ' + ( cPos + ePos ) + ' of ' + display.length + '' );
								}
							);
						}
						
					}
				);
			
			}

		);
		//end next button code
		
		
		
		
		//next Btn code
		$('.prevBtn', this).each(
			function () {				
				$(this).bind('click',
					function () 
					{
						// get table to forward pagination
						var currentTable = 'currentTable';
						var currentPage = $(this).parent().parent().children('.pagination').children('.hilightPageSelector').html();
						var totalPages = $(this).parent().parent().children('.pagination').children('.pageSelector').size();
						//var newPage = (parseInt( currentPage )) - 1;
						//if ((parseInt( currentPage )) < (parseInt( totalPages ))){
						if (parseInt( currentPage ) != 1){
							var newPage = (parseInt( currentPage )) - 1;
							drawPageSelectors( pT, newPage );
							
							
	
						} else {
							newPage = parseInt( totalPages );//1;
							drawPageSelectors( pT, newPage );
							
							
						}
						var beginPos = $('tbody tr:not(.hideTR):first', pT).prevAll().length;						
						var endPos = ( ( parseInt( newPage ) - 1 ) * perPage );
			
						// set the steps to be exponential for all the page scroll difference - i.e. faster for more pages to scroll
						var sStep = $(pT).data('tableSettings').scrollStep * Math.abs( ( endPos - beginPos ) / perPage );
						if ( sStep > perPage ) sStep = perPage;
						var steps = Math.ceil( Math.abs( beginPos - endPos ) / sStep );
						
						
						
						// start scrolling
						while ( steps-- ) {
							//$(this).parent().animate({'opacity':1}, $(pT).data('tableSettings').scrollDelay,
							$(this).parent().parent().children('.pagination').animate({'opacity':1}, $(pT).data('tableSettings').scrollDelay,
								function () {
									// reset the scrollStep for the remaining items
									if ( $(this).queue("fx").length == 0 )
										sStep = ( Math.abs( beginPos - endPos ) % sStep ) || sStep;
									if ( beginPos > endPos ) {				// scoll up
										$('tbody tr:not(.hideTR):first', pT).prevAll(':lt(' + sStep + ')').removeClass('hideTR');
										if ( $('tbody tr:not(.hideTR)', pT).length > perPage )
											$('tbody tr:not(.hideTR):last', pT).prevAll(':lt(' + ( sStep - 1 ) + ')').andSelf().addClass('hideTR');
										// if scrolling up from less rows than perPage - compensate if < perPage
										var currRows =  $('tbody tr:not(.hideTR)', pT).length;
										if ( currRows < perPage )
											$('tbody tr:not(.hideTR):last', pT).nextAll(':lt(' + ( perPage - currRows ) + ')').removeClass('hideTR');
									} else {								// scroll down
										var endPoint = $('tbody tr:not(.hideTR):last', pT);
										$('tbody tr:not(.hideTR):lt(' + sStep + ')', pT).addClass('hideTR');
										$(endPoint).nextAll(':lt(' + sStep + ')').removeClass('hideTR');
									}
									// update status bar
									var cPos = $('tbody tr:not(.hideTR):first', pT).prevAll().length,
										ePos = $('tbody tr:not(.hideTR)', pT).length;
									$('tfoot .status', pT).html(
										'Showing ' + ( cPos + 1 ) + ' - ' + ( cPos + ePos ) + ' of ' + display.length + '' );
								}
							);
						}
						
					}
				);
			
			}

		);
		//end prev button code
		
		
		
	
		return this;				// chainable
	};
	
		
				
})(jQuery);