/*
 *         loopedSlider 0.5.1 - jQuery plugin
 *        written by Nathan Searles        
 *        http://nathansearles.com/loopedslider/
 *
 *        Copyright (c) 2009 Nathan Searles (http://nathansearles.com/)
 *        Dual licensed under the MIT (MIT-LICENSE.txt)
 *        and GPL (GPL-LICENSE.txt) licenses.
 *
 *        Built for jQuery library
 *        http://jquery.com
 *
 */

/*
 *        markup example for $("#loopedSlider").loopedSlider();
 *
 *        <div id="loopedSlider">        
 *                <div class="container">
 *                        <div class="slides">
 *                                <div><img src="01.jpg" alt="" /></div>
 *                                <div><img src="02.jpg" alt="" /></div>
 *                                <div><img src="03.jpg" alt="" /></div>
 *                                <div><img src="04.jpg" alt="" /></div>
 *                        </div>
 *                </div>
 *                <a href="#" class="previous">previous</a>
 *                <a href="#" class="next">next</a>
 *                <ul class="pagination">
 *                        <li><a href="#">1</a></li>
 *                        <li><a href="#">2</a></li>
 *                        <li><a href="#">3</a></li>
 *                        <li><a href="#">4</a></li>
 *                </ul>        
 *        </div>
 *
*/

(function($) {
        $.fn.loopedSlider = function(options) {
                
        var defaults = {                        
                container: '.container',
                slides: '.slides',
                pagination: '.pagination',
                containerClick: false, // Click container for next slide
                autoStart: 0, // Set to positive number for auto interval and interval time
                slidespeed: 300, // Speed of slide animation
                fadespeed: 300, // Speed of fade animation
                autoHeight: false // Set to positive number for auto height and animation speed
        };
                
        this.each(function() {
                
                var obj = $(this);
                var o = $.extend(defaults, options);
                var pagination = $(o.pagination+' li a',obj);
                var m = 0;
                var t = 1;
                var s = $(o.slides,obj).children().size();
                var w = $(o.slides,obj).children().outerWidth();
                var p = 0;
                var u = false;
                var n = 0;
                
                $(o.slides,obj).css({width:(s*w)});
                
                $(o.slides,obj).children().each(function(){
                        $(this).css({position:'absolute',left:p,display:'block'});
                        p=p+w;
                });
                
                $(pagination,obj).each(function(){
                        n=n+1;
                        $(this).attr('rel',n);
                        $(pagination.eq(0),obj).parent().addClass('active');
                });
                
                $(o.slides,obj).children(':eq('+(s-1)+')').css({position:'absolute',left:-w});
                
                if(o.autoHeight){autoHeight(t);}
                
                $('.next',obj).click(function(){
                        if(u===false) {
                                animate('next',true);
                                if(o.autoStart){clearInterval(sliderIntervalID);}
                        } return false;
                });
                
                $('.previous',obj).click(function(){
                        if(u===false) {        
                                animate('prev',true);
                                if(o.autoStart){clearInterval(sliderIntervalID);}
                        } return false;
                });
                
                if (o.containerClick) {
                        $(o.container ,obj).click(function(){
                                if(u===false) {
                                        animate('next',true);
                                        if(o.autoStart){clearInterval(sliderIntervalID);}
                                } return false;
                        });
                }
                
                $(pagination,obj).click(function(){
                        if ($(this).parent().hasClass('active')) {return false;}
                        else {
                                t = $(this).attr('rel');
                                $(pagination,obj).parent().siblings().removeClass('active');
                                $(this).parent().addClass('active');
                                animate('fade',t);
                                if(o.autoStart){clearInterval(sliderIntervalID);}
                        } return false;
                });
                
                if (o.autoStart) {
                        sliderIntervalID = setInterval(function(){
                                if(u===false) {animate('next',true);}
                        }, o.autoStart);
                }
                
                function current(t) {
                        if(t===s+1){t=1;}
                        if(t===0){t=s;}
                        $(pagination,obj).parent().siblings().removeClass('active');
                        $(pagination+'[rel="' + (t) + '"]',obj).parent().addClass('active');
                };
                
                function autoHeight(t) {
                        if(t===s+1){t=1;}
                        if(t===0){t=s;}        
                        var getHeight = $(o.slides,obj).children(':eq('+(t-1)+')',obj).outerHeight();
                        $(o.container,obj).animate({height: getHeight},o.autoHeight);                                        
                };                
                
                function animate(dir,clicked){        
                        u = true;        
                        switch(dir){
                                case 'next':
                                        t = t+1;
                                        m = (-(t*w-w));
                                        current(t);
                                        if(o.autoHeight){autoHeight(t);}
                                        $(o.slides,obj).animate({left: m}, o.slidespeed,function(){
                                                if (t===s+1) {
                                                        t = 1;
                                                        $(o.slides,obj).css({left:0},function(){$(o.slides,obj).animate({left:m})});                                                        
                                                        $(o.slides,obj).children(':eq(0)').css({left: 0});
                                                        $(o.slides,obj).children(':eq('+(s-1)+')').css({ position:'absolute',left:-w});                                
                                                }
                                                if (t===s) $(o.slides,obj).children(':eq(0)').css({left:(s*w)});
                                                if (t===s-1) $(o.slides,obj).children(':eq('+(s-1)+')').css({left:s*w-w});
                                                u = false;
                                        });                                        
                                        break; 
                                case 'prev':
                                        t = t-1;
                                        m = (-(t*w-w));
                                        current(t);
                                        if(o.autoHeight){autoHeight(t);}
                                        $(o.slides,obj).animate({left: m}, o.slidespeed,function(){
                                                if (t===0) {
                                                        t = s;
                                                        $(o.slides,obj).children(':eq('+(s-1)+')').css({position:'absolute',left:(s*w-w)});
                                                        $(o.slides,obj).css({left: -(s*w-w)});
                                                        $(o.slides,obj).children(':eq(0)').css({left:(s*w)});
                                                }
                                                if (t===2 ) $(o.slides,obj).children(':eq(0)').css({position:'absolute',left:0});
                                                if (t===1) $(o.slides,obj).children(':eq('+ (s-1) +')').css({position:'absolute',left:-w});
                                                u = false;
                                        });
                                        break;
                                case 'fade':
                                        t = [t]*1;
                                        m = (-(t*w-w));
                                        current(t);
                                        if(o.autoHeight){autoHeight(t);}
                                        $(o.slides,obj).children().fadeOut(o.fadespeed, function(){
                                                $(o.slides,obj).css({left: m});
                                                $(o.slides,obj).children(':eq('+(s-1)+')').css({left:s*w-w});
                                                $(o.slides,obj).children(':eq(0)').css({left:0});
                                                if(t===s){$(o.slides,obj).children(':eq(0)').css({left:(s*w)});}
                                                if(t===1){$(o.slides,obj).children(':eq('+(s-1)+')').css({ position:'absolute',left:-w});}
                                                $(o.slides,obj).children().fadeIn(o.fadespeed);
                                                u = false;
                                        });
                                        break; 
                                default:
                                        break;
                                }                                        
                        };
                });
        };
})(jQuery);