/**
 * jQuery Plugin Paginator 3000 + v 1.1 
 * 
 * JavaScript Paginator based on Paginator 3000 
 * 
 * Copyright (C) 2010 Web Sites Dewelopment Laboratory. All rights reserved. 
 * Site http://www.cyberapp.ru/
 */

;(function($){
	$.event.special.mousewheel = {
		setup: function() {
			if (this.addEventListener)
				this.addEventListener('DOMMouseScroll', $.event.special.mousewheel.handler, false);
				
			this.onmousewheel = $.event.special.mousewheel.handler;
		},
			
		teardown: function() {
			if (this.removeEventListener)
				this.removeEventListener('DOMMouseScroll', $.event.special.mousewheel.handler, false);
				
			this.onmousewheel = null;
		},
		handler: function( event ) {
			event = $.event.fix(event || window.event);
				
			event.type = "mousewheel";
			event.delta = 0;
				
			if ( event.wheelDelta < 0 || event.detail > 0 )
				event.delta = -1;
			else if (  event.wheelDelta > 0 || event.detail < 0 )
				event.delta = 1;
				
			$.event.handle.apply( this, [event] );
				
			return ;
		}
	};

	$.fn.paginator = function (s){			
		var options = {
			pagesTotal  : 1,	//бщее количество страниц
			pagesSpan   : 10,  	//количество показываемых страниц
			pageCurrent : 50,  	//текущая страница
			baseUrl     : document.location+'&page=%number%', //шаблон ссылки
			builCounter : function (page){ //функция построения счетчика
				return page;	
			},
			clickHandler: null,
			returnOrder : false, //обратный порядок вывода страниц
			lang        : { 
				next  : "Следующая",
				last  : "Последняя",
				prior : "Предыдущая",
				first : "Первая",
				arrowRight : String.fromCharCode(8594),
				arrowLeft  : String.fromCharCode(8592)
			}
		};
				
		$.extend(options, s);
		
		options.pagesSpan = options.pagesSpan < options.pagesTotal ? options.pagesSpan : options.pagesTotal;
		options.pageCurrent = options.pagesTotal < options.pageCurrent ? options.pagesTotal : options.pageCurrent;
		if (!options.baseUrl.match(/%number%/i)) options.baseUrl += '%number%';
			
	 	var html = {};
			
		function prepareHtml(el){
			$(el).html(makePagesTableHtml());
			if (options.pagesTotal == options.pagesSpan) {
				$(el).addClass('fulsize');
			};
			
			html = {
				holder: el,
				table:$(el).find('table:last'),
				trPages: $(el).find('table:last tr:first'),
				tdsPages: $(el).find('table:last tr:first td'),
				scrollBar: $(el).find('div.scroll_bar'),
				scrollThumb: $(el).find('div.scroll_thumb'),
				pageCurrentMark: $(el).find('div.current_page_mark')
			};
		};
			
		function getLink(page){
			return options.baseUrl.replace(/%number%/i, options.builCounter(page));
		} 		
			
		function makePagesTableHtml(){				
			var next_page = (parseInt(options.pageCurrent)< parseInt(options.pagesTotal)) ? parseInt(options.pageCurrent) + 1 : options.pagesTotal; 
			var next  = '<a href="' + getLink(next_page) + '" rel="' + next_page + '">%next%</a>';
			
			var last  = '<a href="' + getLink(options.pagesTotal) + '" rel="' + options.pagesTotal + '">%last%</a>';
			
			var prior_page = (parseInt(options.pageCurrent) > 1) ? parseInt(options.pageCurrent) - 1 : 1;
			var prior = '<a href="' + getLink(prior_page) + '" rel="' + prior_page + '">%prior%</a>';
				
			var first = '<a href="' + getLink(1) + '" rel="' + 1 + '">%first%</a>';
			
			if (options.returnOrder){
				var top_left       = options.lang.arrowLeft + ' ' + options.lang.next;
				var bottom_left    = options.lang.last;
				var top_right      = options.lang.prior + ' ' + options.lang.arrowRight;
				var bottom_right   = options.lang.first;
				
				if (options.pageCurrent !== options.pagesTotal){
					top_left     = next.replace(/%next%/, top_left);
					bottom_left  = last.replace(/%last%/, bottom_left);
				};
				
				if (options.pageCurrent !== 1){
					top_right    = prior.replace(/%prior%/, top_right);
					bottom_right = first.replace(/%first%/, bottom_right);
				};
			} else {
				var top_left       = options.lang.arrowLeft + ' ' + options.lang.prior;
				var top_right      = options.lang.next + ' ' + options.lang.arrowRight;
				var bottom_left    = options.lang.first;
				var bottom_right   = options.lang.last;
				
				if (options.pageCurrent !== options.pagesTotal){
					top_right    = next.replace(/%next%/, top_right);
					bottom_right = last.replace(/%last%/, bottom_right);
				};
					
				if (options.pageCurrent !== 1){
					top_left     = prior.replace(/%prior%/, top_left);
					bottom_left  = first.replace(/%first%/, bottom_left);
				};
			};
			
			tdWidth = (100 / (options.pagesSpan + 2)) + '%';
			
			code =
				'<table width="100%">'+
					'<tr>' +
						'<td class="left top">' + top_left + '</td>' +
						'<td class="spaser" />' +
						'<td rowspan="2" align="center">' +
							'<table>' +
								'<tr>';
									for (i=1; i<=options.pagesSpan; i++){
										code += '<td width="' + tdWidth + '" />';
									}
						code += '</tr>' +
								'<tr>' +
									'<td colspan="' + options.pagesSpan + '">' +
										'<div class="scroll_bar">' + 
											'<div class="scroll_trough" />' + 
											'<div class="scroll_thumb">' + 
												'<div class="scroll_knob" />' + 
											'</div>' + 
											'<div class="current_page_mark" />' + 
										'</div>' +
									'</td>' +
								'</tr>' +
							'</table>' +
						'</td>' + 
						'<td class="spaser" />' +
						'<td class="right top">' + top_right + '</td>' +
					'</tr>' + 
					'<tr>' +
						'<td class="left bottom">' + bottom_left + '</td>' + 
						'<td class="spaser" />' +
						'<td class="spaser" />' +
						'<td class="right bottom">' + bottom_right + '</td>' +
					'</tr>' +
				'</table>';
					
			return code;
		};
	
		function initScrollThumb(){
			html.scrollThumb.widthMin = '8';
			html.scrollThumb.widthPercent = options.pagesSpan/options.pagesTotal * 100;
			html.scrollThumb.xPosPageCurrent = (options.pageCurrent - Math.round(options.pagesSpan/2))/options.pagesTotal * $(html.table).width();
			if (options.returnOrder) {
				html.scrollThumb.xPosPageCurrent = $(html.table).width() - (html.scrollThumb.xPosPageCurrent + Math.round(options.pagesSpan/2)/options.pagesTotal * $(html.table).width());
			}
			html.scrollThumb.xPos = html.scrollThumb.xPosPageCurrent;
			html.scrollThumb.xPosMin = 0;
			html.scrollThumb.xPosMax;
			html.scrollThumb.widthActual;
			setScrollThumbWidth();  
		};
			
		function setScrollThumbWidth(){
			$(html.scrollThumb).css({width : html.scrollThumb.widthPercent + "%"});
			html.scrollThumb.widthActual = $(html.scrollThumb).width();
			
			if (html.scrollThumb.widthActual < html.scrollThumb.widthMin)
				$(html.scrollThumb).css('width', html.scrollThumb.widthMin + 'px');
			
			html.scrollThumb.xPosMax = $(html.table).width - html.scrollThumb.widthActual;   
		};
		
		function moveScrollThumb(){
			$(html.scrollThumb).css("left", html.scrollThumb.xPos + "px");
		}
		
		function initPageCurrentMark(){
			html.pageCurrentMark.widthMin = '3';
			html.pageCurrentMark.widthPercent = 100 / options.pagesTotal;
			html.pageCurrentMark.widthActual;
			setPageCurrentPointWidth();
			movePageCurrentPoint();
		};
		
		function setPageCurrentPointWidth(){
			$(html.pageCurrentMark).css("width", html.pageCurrentMark.widthPercent + '%');
					
			html.pageCurrentMark.widthActual = $(html.pageCurrentMark).width();
				
			if(html.pageCurrentMark.widthActual < html.pageCurrentMark.widthMin)
				$(html.pageCurrentMark).css("width", html.pageCurrentMark.widthMin + 'px');
		};
  
		function movePageCurrentPoint(){
			var pos = 0;
				
			if(html.pageCurrentMark.widthActual < $(html.pageCurrentMark).width()){
				pos = (options.pageCurrent - 1) / options.pagesTotal * $(html.table).width() - $(html.pageCurrentMark).width() / 2;
			} else {
				pos = (options.pageCurrent - 1)/options.pagesTotal * $(html.table).width();
			};
				
			if (options.returnOrder) pos = $(html.table).width() - pos - $(html.pageCurrentMark).width(); 
				
			$(html.pageCurrentMark).css({left: pos + 'px'}); 	
		};
		
		function initEvents (){
			moveScrollThumb();
			options.returnOrder ? drawReturn() : drawPages();
			//drag	
			
			$(html.scrollThumb).bind('mousedown', function(e){										   
				var dx = e.pageX - html.scrollThumb.xPos;		
					
				$(document).bind('mousemove', function(e){
					html.scrollThumb.xPos = e.pageX - dx;
						
					moveScrollThumb();
					options.returnOrder ? drawReturn() : drawPages();
				});
				
				$(document).bind('mouseup', function(){
					$(document).unbind('mousemove');
					enableSelection();
				});
					
				disableSelection();
			});	
			
			//callback click	
			$(html.holder).find('a[rel!=""]').bind('click', function (e){
				return 	options.clickHandler($(this).attr('rel'));
			});
			//fix resize	
			$(window).resize(function (){
				setPageCurrentPointWidth();
				movePageCurrentPoint();
				setScrollThumbWidth();
			});
			//execute link function
			function executeLink(el){
				if ($.isFunction(options.clickHandler)){
					$(el).click();
				} else{
					document.location = $(el).attr('href');	
				};
			}
			//keyboard navigation	
			$(document).keydown(function (e){				
				if (e.ctrlKey){
					switch (e.keyCode ? e.keyCode : e.which ? e.which : null){
						case 0x25:	//previous page
									executeLink($(options.returnOrder ? '.right.top a' : '.left.top a', html.holder));
									break;
									  
						case 0x27:	//next page
									executeLink($(options.returnOrder ? '.left.top a'  : '.right.top a', html.holder));  
									break;
					}
				}
			})	
			//scroll navigation
			/*$(html.holder).bind('mousewheel', function (e){
				selector = (e.delta > 0) ? (options.returnOrder ? '.right.top a' : '.left.top a')
										 : (options.returnOrder ? '.left.top a'  : '.right.top a');
				executeLink($(selector, this)); 
				return false;
			});*/
		};  
			
		function bindLink(el){
			if ($.isFunction(options.clickHandler)){
				$(el).find('a').bind('click', function (){
					return options.clickHandler(options.builCounter($(this).text()));
				});  
			}
		}	
			
		function drawPages(){  
			var percentFromLeft = html.scrollThumb.xPos / $(html.table).width();
			var cellFirstValue = Math.round(percentFromLeft * options.pagesTotal);
				
			var data = "";
				
			if (cellFirstValue < 1){
				cellFirstValue = 1;
				html.scrollThumb.xPos = 0;
				moveScrollThumb();
			} else if (cellFirstValue >= options.pagesTotal - options.pagesSpan) {
				cellFirstValue = options.pagesTotal - options.pagesSpan + 1;
				html.scrollThumb.xPos = $(html.table).width() - $(html.scrollThumb).width();
				moveScrollThumb();
			};
				
			for(var i=0; i < html.tdsPages.length; i++){	
				var cellCurrentValue = cellFirstValue + i;
				if(cellCurrentValue == options.pageCurrent){
					data = '<span><strong>' + cellCurrentValue + '</strong></span>';
				} else {
					data = '<span><a href="' + getLink(cellCurrentValue) + '">' + cellCurrentValue + '</a></span>';
				};
				
				$(html.tdsPages[i]).html(data);
				
				bindLink(html.tdsPages[i]);
			};
		};
		
		function drawReturn(){  
			var percentFromLeft = html.scrollThumb.xPos / $(html.table).width();
			var cellFirstValue = options.pagesTotal - Math.round(percentFromLeft * options.pagesTotal);
				
			var data = "";
			if (cellFirstValue < options.pagesSpan){
				cellFirstValue = options.pagesSpan;
				html.scrollThumb.xPos = $(html.table).width() - $(html.scrollThumb).width();
				moveScrollThumb();
			} else if (cellFirstValue >= options.pagesTotal) {
				cellFirstValue = options.pagesTotal;
				html.scrollThumb.xPos = 0;
				moveScrollThumb();
			};
				
			for(var i=0; i < html.tdsPages.length; i++){	
				var cellCurrentValue = cellFirstValue - i;
				
				if(cellCurrentValue == options.pageCurrent){
					data = '<span><strong>' + cellCurrentValue + '</strong></span>';
				} else {
					data = '<span><a href="' + getLink(cellCurrentValue) + '">' + cellCurrentValue + '</a></span>';
				};
				
				$(html.tdsPages[i]).html(data);
				
				bindLink(html.tdsPages[i]);
			};
		};
			
		function enableSelection(){
			document.onselectstart = function(){
				return true;
			};
		};
		
		function disableSelection (){
			document.onselectstart = function(){
				return false;
			};  
			$(html.scrollThumb).focus();	
		};
		
		prepareHtml(this);	 
		initScrollThumb();
		initPageCurrentMark();
		initEvents();	 
   };
})(jQuery);