/* 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 jPause = opts.pause;

     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();
                     }, jPause);
         };
     };

     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,
     pause: 3000,
     easing: "swing",
     duration: 400,
     width: "100%",
     prev: ".jFlowPrev", // must be class, use . sign
     next: ".jFlowNext" // must be class, use . sign
 };
 
})(jQuery);