/* 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;
		var cur = 0;
		var maxi = $(jFC).length;



		// sliding function
		var slide = function (dur, i) {
			//Handle enable and disable of prev control
			if(i>0){
				$(opts.prev).each(function(){
					$(this).addClass("enabledPrevControl");
					$(this).removeClass("disabledPrevControl");
				});
			}
			else {
				$(opts.prev).each(function(){
					$(this).removeClass("enabledPrevControl");
					$(this).addClass("disabledPrevControl");
				});
			}
			//Handle enable and disable of next control
			if (i<maxi-1) {
				$(opts.next).each(function(){
					$(this).addClass("enabledNextControl");
					$(this).removeClass("disabledNextControl");
				});
			}
			else {
				$(opts.next).each(function(){
					$(this).removeClass("enabledNextControl");
					$(this).addClass("disabledNextControl");
				});
			}

			$(jFC).each(function() {$(this).removeClass("enabledNavControl").addClass("disabledNavControl");})
			$(jFC).eq(i).removeClass("disabledNavControl").addClass("enabledNavControl");

			$(opts.slides).children().css({
				overflow:"hidden"
			});
			$(opts.slides + " iframe").hide().addClass("temp_hide");
			$(opts.slides).animate({
				marginLeft: "-" + (i * $(opts.slides).find(":first-child").width() + "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;
				}
			});
		});

		$(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"
			});
			//opts.slides or #mySlides container
			$(opts.slides).css({
				position:"relative",
				width: ($(jFS).width()*$(jFC).length+ 1000) + "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"
			});
			$(opts.slides).css({
				marginLeft: "-" + (cur * $(opts.slides).find(":eq(0)").width() + "px")
			});
		}

		// sets initial size
		resize();

		// resets size
		$(window).resize(function(){
			resize();
		});

		$(opts.prev).click(function(){

			if ($(opts.slides).is(":not(:animated)")) {
				var dur = 1;

				if (cur > 0) {
					cur--;
					/*
					//Enable next control
					$(opts.next).each(function(){
						$(this).addClass("enabledNextControl");
						$(this).removeClass("disabledNextControl");
					});
					if(cur==0) {
						$(this).removeClass("enabledPrevControl");
						$(this).addClass("disabledPrevControl");
					}*/

					$(jFC).removeClass(jSel);
					slide(dur,cur);
					$(jFC).eq(cur).addClass(jSel);
				}
				else {
					return;
				}




			}
		});

		$(opts.next).click(function(){
			if ($(opts.slides).is(":not(:animated)")) {
				var dur = 1;


				if (cur < maxi - 1) {
					cur++;
					//Enable prev control
					/*
					$(opts.prev).each(function(){
						$(this).addClass("enabledPrevControl");
						$(this).removeClass("disabledPrevControl");
					});
					if (cur==maxi-1) {
						$(this).removeClass("enabledMextControl");
						$(this).addClass("disabledNextControl");
					}*/
					$(jFC).removeClass(jSel);
					slide(dur, cur);
					$(jFC).eq(cur).addClass(jSel);
				}

				else {
					return;
				}

			}
		});
	};



	$.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: 400,
		width: "510px",
		prev: ".jFlowPrev", // must be class, use . sign
		next: ".jFlowNext" // must be class, use . sign
	};

})(jQuery);