/* 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 timer;
                var maxi = $(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({
                                marginLeft: "-" + (i * $(opts.slides).find(":first-child").width() + "px")
                                },
                                opts.duration*(dur),
                                opts.easing,
                                function(){
                                        $(opts.slides).children().css({
                                                overflow:"hidden"
                                        });
                                        $(".temp_hide").show();
                                }
                        );

                }
                $(this).find(jFC).each(function(i){
                        $(this).click(function(){
                                dotimer();
                                if ($(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+"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:"hidden"
                        });

                        $(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(){
                        dotimer();
                        doprev();

                });

                $(opts.next).click(function(){
                        dotimer();
                        donext();

                });

                var doprev = function (x){
                        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){
                        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() {
                                $(opts.next).click();
                                                }, 6500);
                        }
                }

                dotimer();
        };

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

})(jQuery);