/* Copyright (c) 2010 WordImpressed.com jFlow Plus derived from Kean Loong Tan's orgininal jFlow http://www.wordimpressed.com
 * Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * jFlow 1.2 (Plus)
 * Version: jFlow Plus
 * 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 timer;
        var maxi = $(jFC).length;

        var slide = function (dur, i) {
            dotimer();
            $(opts.slides).children().has(":visible").fadeOut(600);
            $(opts.slides).children().eq(i).fadeIn(600);
        }
        $(jFC).each(function(i){
            $(this).click(function(){
                opts.auto=false;
                if (timer!=null)
                    clearInterval(timer);
                if ($(opts.slides).is(":not(:animated)")) {
                    $(jFC).removeClass(jSel);
                    $(this).addClass(jSel);
                    var dur = Math.abs(cur-i);
                    slide(dur,i);
                    cur = i;
                }
            });
        });

        //initialize the controller
        $(jFC).eq(cur).addClass(jSel);
        $(opts.slides).children().hide();
        $(opts.slides).children().eq(0).show();
        
        $(opts.prev).click(function(){
            opts.auto=false;
            if (timer != null)
                clearInterval(timer);
            doprev();
        });
        
        $(opts.next).click(function(){
            opts.auto=false;
            if (timer !=null)
                clearInterval(timer);
            donext();       
        });
        
        var doprev = function (x){
            dotimer();
            if ($(opts.slides).is(":not(:animated)")) {
                var dur = 1;
                if (cur > 0)
                    cur--;
                else {
                    cur = maxi -1;
                    dur = cur;
                }
                $(jFC).removeClass(jSel);
                slide(dur,cur);
                $(jFC).eq(cur).addClass(jSel);
            }
        }
        
        var donext = function (x){
            dotimer();
            if ($(opts.slides).is(":not(:animated)")) {
                var dur = 1;
                if (cur < maxi - 1)
                    cur++;
                else {
                    cur = 0;
                    dur = maxi -1;
                }
                $(jFC).removeClass(jSel);
                //$(jFS).fadeOut("fast");
                slide(dur, cur);
                //$(jFS).fadeIn("fast");
                $(jFC).eq(cur).addClass(jSel);
            }
        }
        
        var dotimer = function (x){
            if((opts.auto) == true) {
                if(timer != null) 
                    clearInterval(timer);
                timer = setInterval(function() {
                        donext();
                        }, 6000);
                
            }
        }

//Pause/Resume function fires at hover
        dotimer();

    };
    
    $.fn.jFlow.defaults = {
        controller: "#myController", // must be class, use . sign
        slideWrapper : "#mySlides", // must be id, use # sign
        selectedWrapper: ".jFlowSelected",  // just pure text, no sign
        auto: true,
        easing: "swing",
        duration: 400,
        width: "100%",
        prev: ".jFlowPrev", // must be class, use . sign
        next: ".jFlowNext" // must be class, use . sign
    };

})(jQuery);