/* Copyright (c) 2008 Kean Loong Tan http://www.gimiti.com/kltan
 * Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * jFlow
 * Version: 1.2 (July 7, 2008)
 * Requires: jQuery 1.2+
 */
(function($) {
	$.fn.jFlow = function(options) {
		var opts = $.extend({}, $.fn.jFlow.defaults, options);
		var randNum = Math.floor(Math.random()*11);
		var jFC = opts.controller;
		var jFS =  opts.slideWrapper;
		var jSel = opts.selectedWrapper;
																		// SS > Simon Sarrasin ssarrasin@gmail.com
		var cur = parseInt(opts.vars_array['cur']);						// SS div cursor
		var pointer = parseInt(opts.vars_array['pointer']);				// SS which product "package" to point to
		var max = parseInt(opts.vars_array['max']);						// SS max products to show (size of packages)
		var total_count = parseInt(opts.vars_array['total_count'])-parseInt(opts.vars_array['num_take_out_objects']);	// SS items total
		var max_pointer=total_count/max;								// SS max_pointer is the size of the products array parceled in packages of "max"
		var mod_max=total_count%max;									// SS check if remainder
		var nts=parseInt(opts.vars_array['nts']);						// SS number of items to show. Used primarily for the count.
		// check if remainder
		max_pointer=mod_max ? parseInt(max_pointer) : parseInt(max_pointer)-1;
		
		//var maxi_cursor = $(jFC).length;
		// sliding function
		var slide = function (dur, i) {
			$(opts.slides).children().css({
				overflow:"hidden"
			});
			$(opts.slides + " iframe").hide().addClass("temp_hide");
			$(opts.slides).animate(
				(opts.direction=='horizontal' ?
					{marginLeft: "-" + getWidth(i)+"px"}
				:
					{marginTop: "-" + getHeight(i)+"px"}
				)
			,
				opts.duration*(dur),
				opts.easing,
				function(){
					$(opts.slides).children().css({
						overflow:"auto"
					});
					$(".temp_hide").show();
				}
			);			
		}
		$(this).find(jFC).each(function(i){
			$(this).click(function(){
				if ($(opts.slides).is(":not(:animated)")) {
					$(jFC).removeClass(jSel);
					$(this).addClass(jSel);
					var dur = Math.abs(cur-i);
					slide(dur,i);
					cur = i;
				}
			});
		});
		var getWidth=function(i) {
			// <temporary fix for ie bug
			return i*783;
			// temporary fix for ie bug />
			data=updateCount(cur);
			var from=data[0];
			var to=data[1];
			var full_width=($(opts.slides_class).width());
			var ret_width=0;
			var last_slide=opts.slides_class+":last";
			//alert(last_slide);
			/*
			if(to==total_count) {
				var div=$(opts.slides).find(last_slide);
				var w=0;
				var spacer=0;
				div.find(opts.slides_children).each(function() {
					//alert(w);
					w+=$(this).width();
					spacer=(full_width-nts*$(this).width())/nts;
					//alert(w);
				});
				ret_width=parseInt(w)+spacer;//+full_width;
				//alert(ret_width);
			}
			else */
			ret_width=i * full_width;
			//alert(ret);
			return ret_width;
		}
		var getHeight=function(i) {
			data=updateCount(cur);
			var from=data[0];
			var to=data[1];
			var full_height=($(opts.slides).find(":first-child").height());
			var ret_height=0;
			var last_slide=opts.slides_class+":last";
			/*
			if(to==total_count) {
				var slid=$(opts.slides).find(last_slide);
				var h=0;
				slid.find(opts.slides_children).each(function() {
					//alert(h);
					h+=$(this).height();
					//alert(h);
				});
				ret_height=parseInt(h)+full_height;
			}
			else */
			ret_height=i * full_height;
			//alert(ret);
			return ret_height;
		}
		$(opts.slides).before('<div id="'+jFS.substring(1, jFS.length)+'"></div>').appendTo(jFS);		
		$(opts.slides).find("div").each(function(){
			$(this).before('<div class="jFlowSlideContainer"></div>').appendTo($(this).prev());
		});
		//initialize the controller
		$(jFC).eq(cur).addClass(jSel);
		var resize = function (x){
			$(jFS).css({
				position:"relative",
				width: opts.width,
				height: opts.height,
				overflow: "hidden"
			});
			if(opts.direction!='vertical') {
				$(opts.slides).css({
					position:"relative",
					width: $(jFS).width()*$(jFC).length+"px",
					height: $(jFS).height()+"px",
					overflow: "hidden"
				});
				// jFlowSlideContainer
				$(opts.slides).children().css({
					position:"relative",
					width: $(jFS).width()+"px",
					height: $(jFS).height()+"px",
					"float":"left",
					overflow:"auto"
				});
				//BV moved up this following block inside the != vertical condition
				$(opts.slides).css({
					marginLeft: "-" + (cur * $(opts.slides).find(":eq(0)").width() + "px")
				});
			}//
			else {
				//just added the else
				$(opts.slides).css({
					marginTop: "-" + (cur * $(opts.slides).find(":eq(0)").height() + "px")
				});
			}
		}
		// sets initial size
		resize();
		
		// resets size
		$(window).resize(function(){
			resize();
		});
		var slipNSlide=function(dur) {
			$(jFC).removeClass(jSel);
			slide(dur,cur);
			$(jFC).eq(cur).addClass(jSel);
			updateCount();
		}
		var verifyPointer=function() {
			pointer=pointer>max_pointer ? 0 : (pointer<0 ? max_pointer : pointer);
		};
		var updateCount = function updateCount() { // SS 29/12/08
			nts>total_count ? nts=total_count : "";
			var from_num=(pointer==0 ? (cur==0 ? cur+1 : cur*nts+1) : (pointer)*max+cur*nts+1);
			var to_num=from_num==1 ? nts : parseInt(from_num+nts-1);
			to_num>total_count ? to_num=total_count : to_num;
			//alert("pointer: "+pointer+" cur: "+cur+" from_num: "+from_num+" to_num: "+to_num);
			/*
			if(from_num>to_num) {
				pointer++;
				verifyPointer();
				cur = 0;
				ajaxLoad();
			}*/
			$(opts.from).html(from_num);
			$(opts.to).html(to_num);
			getMaxCur();
			return Array(from_num,to_num);
		};
		var ajaxLoad=function ajaxLoad() { // SS 26/01/09
			var f=eval(opts.ajax_function);
			var a=opts.vars_array;
			a.pointer=pointer;
			a.cur=cur;
			f(a);
		};
		var getMaxCur=function() { // SS 30/01/09
			var max_cur=parseInt(max/nts);
			//return max_cur;
			var tc=total_count;
			
			var num_packages=(tc/max);
			var v_num=""+num_packages;
			if(v_num.indexOf(".")!=-1) num_packages=parseInt(num_packages);
			
			var current_package_size=tc-pointer*max;
			current_package_size==0 || current_package_size>max ? current_package_size=max : current_package_size;
			
			var max_package_cur=(current_package_size/nts)-1;
			v_num=""+max_package_cur;
			if(v_num.indexOf(".")!=-1) max_package_cur++;
			
			//max_package_cur=parseInt(max_package_cur)-1;
			max_package_cur=parseInt(max_package_cur<0 ? 0 : max_package_cur);
			
			max_cur=(max_cur>max_package_cur ? max_package_cur : max_cur);
			max_cur=(max_cur<0 ? 0 : max_cur);			
			//$("#debug").html("max: "+max+"<br />pointer: "+pointer+"<br />cur: "+cur+"<br />max_cur: "+max_cur+"<br />num_packages: "+num_packages+"<br />current_package_size: "+current_package_size+"<br />max_package_cur: "+max_package_cur+"<br />total_count: "+total_count);
			//$('#debug').html(pointer+"<br />"+max_pointer);
			//cur=cur>max_package_cur ? max_package_cur : cur;
			return max_cur;
		};
		getMaxCur();
		
		$(opts.prev).click(function(){
			if ($(opts.slides).is(":not(:animated)")) {
				var max_cur = getMaxCur();
				var dur = 1;
				if (cur > 0) {
					cur--;
					slipNSlide(dur);
				}
				else {
					if (total_count > max) {
						pointer--;
						verifyPointer();
						max_cur = getMaxCur();
						cur = max_cur;
						ajaxLoad();
					}
					else {
						cur = max_cur;
						dur = cur;
						slipNSlide(dur);
					}
				}
			}
		});		
		$(opts.next).click(function(){
			if ($(opts.slides).is(":not(:animated)")) {
				var max_cur = getMaxCur();
				var dur = 1;
				if (cur < max_cur) {
					cur++;
					slipNSlide();
				}
				else {
					if (total_count > max) {
						pointer++;
						verifyPointer();
						cur = 0;
						ajaxLoad();
					}
					else { // go back to beginning if total items is less than max
						cur = 0;
						dur = max_cur;
						slipNSlide();
					}
				}
			}
		});
	};	
	$.fn.jFlow.defaults = {
		controller: ".jFlowControl", // must be class, use . sign
		slideWrapper : "#jFlowSlide", // must be id, use # sign
		selectedWrapper: "jFlowSelected",  // just pure text, no sign
		easing: "swing",
		duration: 250,
		width: "100%",
		numToShow: 3,
		slides_class:'.inner_wrap',
		slides_children:'.p-box',
		direction: 'horizontal',
		prev: ".jFlowPrev", // must be class, use . sign
		next: ".jFlowNext", // must be class, use . sign
		from: ".jFlowFrom", // must be class, use . sign
		to:   ".jFlowTo" // must be class, use . sign
	};
})(jQuery);