/**
 * v3slider 
 * jQuery plugin
 *
 * Created by: Velja Matic
 * Author email: veljamatic@gmail.com
 * 
 * wrapper for asyncslider
 * 
 */
(function($){

$.fn.v3slider = function(options,_var,_val){

    return this.each(function(){
       
            
        // options
        var ct;
        var p=this;
        var rotations_count=0;
        var callback=function(){};
        var bg_mask;
        var bg_mask_2;
        var slides=[];
        var min_time=800;
        var max_time=1200;
        var direction='horizontal';
        var easing='easeInOutSine';
        var easing_in='';
        var easing_out='';
        var keyboard_navigate=false;
        var prev_next_nav=true;
        var center_prev_next_nav=true;
        var prev_next_nav_margin=5;
        var slides_nav=false;
        var random=false;
        var autoswitch=false;
        var autoswitch_interval=5000;
        var autoswitch_interval_func=null;
        var current_index=0;
        var total_slides=0;
        var timeout;
        var horizontal_direction='';
        var vertical_direction='';
        var base_zindex=1000;
        var busy=false;
        var _next_a,_prev_a;
        var slides_nav_el;
                 

        if(typeof options=='string'){
            switch(options.toLowerCase()){
                case"movetoslide":
                    var move_to_slide=parseInt(_var,10);
                    if(move_to_slide>0&&move_to_slide<=total_slides){
                        var old_index=current_index;
                        current_index=move_to_slide-1;
                        if(_val){
                            horizontal_direction=_val=='right'?'right':'left';
                        }
                        if(_val){
                            vertical_direction=_val=='bottom'?'top':'bottom';
                        }
                        switchSlide(current_index,old_index);
                    }
                    break;
                case"set":
                    setOption(_var,_val);
                    break;
                case"next":
                    nextSlide(_var);
                    break;
                case"prev":
                    prevSlide(_var);
                    break;
            }
        }
    
        sliderPrepare(this,options);
        if(typeof _var=='function'){callback=_var;}
        
        
        
        // private f.
        
        function sliderPrepare(el,options){
            if(typeof ct=='undefined'){ct=$(el);
            ct.css({position:'relative'});
            if(typeof options=='object'){
                if(typeof options.direction=='string'){
                    if(options.direction.toLowerCase()=='vertical'){direction='vertical';}
                    else{direction='horizontal';}
                }
                if(typeof options.random!='undefined'){random=options.random;}
                if(typeof options.minTime!='undefined'){min_time=options.minTime;}
                if(typeof options.maxTime!='undefined'){max_time=options.maxTime;}
                if(typeof options.easing=='string'){easing=options.easing;}
                if(typeof options.easingIn=='string'){easing_in=options.easingIn;}
                if(typeof options.easingOut=='string'){easing_out=options.easingOut;}
                if(typeof options.keyboardNavigate!='undefined'){keyboard_navigate=options.keyboardNavigate?true:false;}
                if(typeof options.prevNextNav!='undefined'){prev_next_nav=options.prevNextNav;}
                if(typeof options.centerPrevNextNav!='undefined'){center_prev_next_nav=true;prev_next_nav_margin=parseInt(options.centerPrevNextNav,10);}
                if(typeof options.slidesNav!='undefined'){slides_nav=options.slidesNav;}
                if(typeof options.autoswitch=='number'&&options.autoswitch>0){autoswitch=true;autoswitch_interval=options.autoswitch;_autoSwitch("on");}
            }
            else{options={};}
            
        ct.children().each(function(i){
            var slide=$(this);
            var slide_elements=slide.find('*');
            slide.hide().css({zIndex:base_zindex+10,position:'relative'});
            slide.height=slide.outerHeight();
            slide.width=slide.outerWidth();
            slide.background=false;
            var sbg="";
            var _bg_color=slide.css("background-color");
            var _bg_image=slide.css("background-image");
            var _bg_repeat=slide.css("background-repeat");
            var _bg_position=slide.css("background-position");
            var _bg_property=_bg_color+' '+(_bg_image=='none'?'':_bg_image)+' '+_bg_position+' '+_bg_repeat;
            if(_bg_image!='none'||_bg_color){
                sbg=_bg_property;
                slide.css("background","none");
            }
            if(sbg||slide.attr("data-background")){
                slide.background=sbg;
                if(slide.attr("data-background")){
                    slide.background=slide.attr("data-background");
                }
                var img_url=[];
                img_url=slide.background.match(/url\((.*?)\)/);
                if(img_url&&img_url.length>0){
                    var img=new Image();
                    img.src=img_url[1];
                }
            }
            
            slide.elements=[];
            slide_elements.each(function(){
                var $this=$(this);
                var def_left=parseInt($this.css("left"),10);
                var def_top=parseInt($this.css("top"),10);
                $this.def_left=0;
                $this.def_top=0;
                if(def_left){$this.def_left=def_left;}
                if(def_top){$this.def_top=def_top;}
                if($this.css('position')!='absolute'){$this.css({position:'relative'});}
                $this.css({zIndex:base_zindex+10});
                if($this.get(0).tagName!="BR"){slide.elements.push($this);}
            });
            
            slide.index=parseInt(i,10);
            slides.push(slide);
            if(i===0){
                slide.show();
                ct.height(slide.height).css({overflow:'hidden'});
                bg_mask=$('<div id="asyncslider_background_mask"></div>');
                bg_mask_2=$('<div id="asyncslider_background_mask_2"></div>');
                slide.before(bg_mask);
                slide.before(bg_mask_2);
                bg_mask.css({position:'absolute',top:0,left:0,zIndex:base_zindex+1,padding:0,margin:0,width:ct.outerWidth(),height:ct.outerHeight()});
                bg_mask_2.css({position:'absolute',top:0,left:0,zIndex:base_zindex+2,padding:0,margin:0,width:ct.outerWidth(),height:ct.outerHeight()});
                $(window).resize(function(){
                    bg_mask.width(ct.outerWidth());
                    bg_mask_2.width(ct.outerWidth());
                });
                if(slide.background){bg_mask.css("background",slide.background);}
            }
        });
        
        total_slides=slides.length;
        if(typeof options!='undefined'&&typeof options.firstSlide!='undefined'){
            var fs_index=options.firstSlide-1;
            if(fs_index>=0&&fs_index<total_slides){
                var tmp_min_time=min_time;
                var tmp_max_time=max_time;
                var tmp_callback=callback;
                min_time=max_time=0;
                callback=function(){};
                current_index=fs_index;
                switchSlide(current_index,0);
                min_time=tmp_min_time;
                max_time=tmp_max_time;
                callback=tmp_callback;}
            }
            if(ct.children().length<2){return;}
            
            $(window).keydown(function(e){
                if(keyboard_navigate){
                    switch(e.keyCode){
                        case 37:
                            prevSlide();
                            break;
                        case 39:
                            nextSlide();
                            break;
                    }
                }
            });
            
            if(prev_next_nav&&total_slides>1){
                var next_prev_nav_el=$('<ul class="asyncslider_next_prev_nav" />');
                next_prev_nav_el.css({zIndex:base_zindex+100});
                var prev_li=$('<li class="prev" />');
                var next_li=$('<li class="next" />');
                var prev_a=$('<a href="#">Previous</a>');
                var next_a=$('<a href="#">Next</a>');
                next_prev_nav_el.append(prev_li);
                next_prev_nav_el.append(next_li);
                prev_li.append(prev_a);
                next_li.append(next_a);
                prev_li.click(function(ev){
                    ev.preventDefault();
                    prevSlide();
                });
                next_li.click(function(ev){
                    ev.preventDefault();
                    nextSlide();
                });
                if(typeof prev_next_nav=='object'){
                    prev_next_nav.append(next_prev_nav_el);
                }
                else{
                    ct.append(next_prev_nav_el);
                    if(center_prev_next_nav){
                        var margin_h=prev_next_nav_margin;
                        var current_slide=getSlide(current_index);
                        next_prev_nav_el.css({position:'absolute',left:"50%",margin:0,padding:0,listStyle:'none',marginLeft:-parseInt(current_slide.outerWidth()/2,10),top:0});                                          next_prev_nav_el.find('*').css({margin:0,padding:0});
                        var next=next_prev_nav_el.find('.next');
                        var prev=next_prev_nav_el.find('.prev');
                        _next_a=next.children();
                        _prev_a=prev.children().css({left:-prev_a.width()-margin_h});
                        prev.add(next).css({position:'relative'});
                        prev.width(_prev_a.width());
                        next.width(_next_a.width());
                        _next_a.add(_prev_a).css({position:'absolute'});
                        _next_a.css({left:current_slide.outerWidth()+margin_h,top:parseInt(current_slide.outerHeight()/2-_prev_a.outerHeight()/2,10)});
                        _prev_a.css({top:parseInt(current_slide.outerHeight()/2-_prev_a.outerHeight()/2,10)});
                    }
                }
            }

            if(slides_nav){
                slides_nav_el=$('<ul id="asyncslider_slides_nav" />');
                slides_nav_el.css({zIndex:base_zindex+100});
                for(var i=0;i<slides.length;i++){
                    var slide=slides[i];
                    var slide_button_li=$('<li id="asyncslider_slide_'+(parseInt(i,10)+1)+'" />');
                    var slide_button_a=$('<a href="#" rel="'+(i)+'">'+(parseInt(i,10)+1)+'</a>');
                    if(i===0&&typeof options.firstSlide=='undefined'){slide_button_li.addClass('active');}
                    else if(typeof options.firstSlide!='undefined'&&i==parseInt(options.firstSlide,10)-1){slide_button_li.addClass('active');}
                    
                    slides_nav_el.append(slide_button_li);
                    slide_button_li.append(slide_button_a);
                    index=parseInt(i,10);
                    var btn_click_a=slide_button_a.click(function(ev){
                        ev.preventDefault();
                        if(busy){return false;}
                        slides_nav_el.find('li').removeClass('active');
                        $(this).parent().addClass('active');
                        var i=parseInt($(this).attr("rel"),10);
                        var old_index=current_index;
                        current_index=i;
                        switchSlide(current_index,old_index);
                    });
                }
                
                if(typeof slides_nav=='object'){slides_nav.append(slides_nav_el);}
                else{ct.append(slides_nav_el);}
            }
        }

    };

        function setIndex(index){
            if(index>=0&&index<total_slides){current_index=index;}
        };

        function getSlide(index){
            if(index>=0&&index<total_slides){return slides[index];}
            return null;
        };

        function nextSlide(_direction){
            if(busy){return false;}
            
            var old_index=current_index;
            current_index++;
            current_index=current_index%total_slides;
            horizontal_direction='left';
            vertical_direction='bottom';
            if(_direction){
                horizontal_direction=_direction=='right'?'right':'left';
            }
            if(_direction){
                vertical_direction=_direction=='bottom'?'top':'bottom';
            }
            switchSlide(current_index,old_index);
        };

        function prevSlide(_direction){
            if(busy){return false;}
            var old_index=current_index;
            current_index--;
            current_index=current_index<0?(total_slides-1):current_index;
            horizontal_direction='right';
            vertical_direction='top';
            if(_direction){
                horizontal_direction=_direction=='left'?'left':'right';
            }
            if(_direction){
                vertical_direction=_direction=='top'?'bottom':'top';
            }
            switchSlide(current_index,old_index);
        };

        function switchSlide(_in,_out){
            var current_slide=getSlide(_out);
            var next_slide=getSlide(_in);
            if((!current_slide||!next_slide)||_in==_out){return false;}
            if(busy){return false;}
            busy=true;
            var half_m=parseInt((max_time+min_time)/2,10);
            max_time=min_time>max_time?min_time:max_time;
            min_time=min_time>max_time?max_time:min_time;
            if(next_slide.background){
                if(!current_slide.background){
                    bg_mask.css({background:next_slide.background}).hide().fadeTo(half_m,1);
                }
                else{if(rotations_count==0){
                        bg_mask.css({background:current_slide.background});
                        bg_mask_2.hide().css({background:next_slide.background}).stop().fadeTo(half_m,1);
                    }
                    else{
                        bg_mask.css({background:next_slide.background}).show();
                        bg_mask_2.stop().fadeTo(half_m,0,function(){
                            bg_mask.hide();
                            bg_mask_2.css({background:next_slide.background}).fadeTo(0,1);
                        });
                    }
                }
            }
            else{
                bg_mask_2.stop().fadeTo(half_m,0);
                bg_mask.stop().fadeTo(half_m,0);
            }
            if(center_prev_next_nav&&_next_a&&_prev_a){
                _next_a.stop().animate({top:parseInt(next_slide.outerHeight()/2-_next_a.outerHeight()/2,10)},half_m);
                _prev_a.stop().animate({top:parseInt(next_slide.outerHeight()/2-_prev_a.outerHeight()/2,10)},half_m);
            }
            bg_mask.stop().animate({height:next_slide.height},half_m);
            bg_mask_2.height(next_slide.height);
            if(slides_nav_el){
                slides_nav_el.find('li').removeClass('active').filter(':nth-child('+(next_slide.index+1)+')').addClass('active');
            }
            var turn=1,
            i,
            el,
            time_seq,
            time_seq_step,
            def_left,
            def_top,
            animation_length,
            move_top,
            move_left;
            
            if(direction=='horizontal'){
                var win=$(window);
                var win_ct_gap_size=win.width()-next_slide.width;
                ct.css({overflow:"hidden"}).stop().animate({height:next_slide.height},half_m);
                var move_left_1=parseInt(current_slide.width/2+win_ct_gap_size/2,10);
                if(_in>_out){
                    move_top=current_slide.height;
                    if(move_top<next_slide.height){
                        move_top=next_slide.height-(next_slide.height-current_slide.height);
                    }
                    current_slide.css({position:'relative',zIndex:base_zindex+3});
                    next_slide.css({position:'relative',zIndex:base_zindex+4,top:-move_top}).show();turn=1;
                }
                else{
                    move_top=current_slide.height;
                    if(move_top<next_slide.height){
                        move_top=next_slide.height;
                    }
                    else{
                        move_top-=(current_slide.height-next_slide.height);
                    }
                    current_slide.css({position:'relative',zIndex:base_zindex+3,top:-move_top});
                    next_slide.css({position:'relative',zIndex:base_zindex+4}).show();turn=-1;
                }
                if(horizontal_direction){
                    if(horizontal_direction=='right'){turn=-1;}
                    else{turn=1;}
                }
                if(!easing_in){easing_in=easing;}
                if(!easing_out){easing_out=easing;}
                time_seq=min_time;
                time_seq_step=parseInt((max_time-min_time)/current_slide.elements.length,10);
                move_left=current_slide.width+win_ct_gap_size;
                for(i=0;i<current_slide.elements.length;i++){
                    el=current_slide.elements[i];
                    def_left=el.def_left;
                    def_top=el.def_top;
                    animation_length=randomFromTo(min_time,max_time);
                    move_left_1=move_left;
                    if(!random){
                        time_seq+=time_seq_step;
                        animation_length=time_seq;
                    }
                    el.stop().animate({left:-turn*move_left_1+def_left,top:def_top+0},animation_length,easing_in);}
                    time_seq=min_time;
                    time_seq_step=parseInt((max_time-min_time)/next_slide.elements.length,10);
                    move_left=next_slide.width+win_ct_gap_size;
                    var next_slide_total_elements=next_slide.elements.length;
                    for(i=0;i<next_slide.elements.length;i++){
                        el=next_slide.elements[i];
                        def_left=el.def_left;
                        def_top=el.def_top;
                        animation_length=randomFromTo(min_time,max_time);
                        move_left_1=move_left+randomFromTo(0,el.outerWidth());
                        if(!random){
                            time_seq+=time_seq_step;
                            animation_length=time_seq;
                        }
                        var _index=parseInt(i,10);
                        el.css({left:turn*move_left_1+def_left,top:def_top+0}).stop().animate({left:0+def_left},animation_length,easing_out);
                    }
                }
            else{
                ct.css({overflow:"hidden"}).stop().animate({height:next_slide.height},half_m);
                var move_top_1=ct.height();
                if(_in>_out){
                    current_slide.css({position:'relative',zIndex:base_zindex+3});
                    next_slide.css({position:'relative',zIndex:base_zindex+4,top:-current_slide.height}).show();
                    turn=1;
                }
                else{
                    current_slide.css({position:'relative',zIndex:base_zindex+3,top:-current_slide.height});
                    next_slide.css({position:'relative',zIndex:base_zindex+4}).show();
                    turn=-1;
                }
                if(vertical_direction){
                    if(vertical_direction=='top'){turn=-1;}
                    else{turn=1;}
                }
                if(!easing_in){easing_in=easing;}
                if(!easing_out){easing_out=easing;}
                current_slide.animate({top:-turn*move_top_1},half_m);
                time_seq=min_time;
                time_seq_step=parseInt((max_time-min_time)/current_slide.elements.length,10);
                for(i=0;i<current_slide.elements.length;i++){
                    el=current_slide.elements[i];
                    def_left=el.def_left;
                    def_top=el.def_top;
                    animation_length=randomFromTo(min_time,max_time);
                    move_top=move_top_1;
                    if(!random){
                        time_seq+=time_seq_step;
                        animation_length=time_seq;
                    }
                    el.stop().animate({top:-turn*move_top+def_top},animation_length,easing_in);
                }
                time_seq=min_time;
                time_seq_step=parseInt((max_time-min_time)/next_slide.elements.length,10);
                for(i=0;i<next_slide.elements.length;i++){
                    el=next_slide.elements[i];
                    def_left=el.def_left;
                    def_top=el.def_top;
                    animation_length=randomFromTo(min_time,max_time);
                    move_top=move_top_1;
                    if(!random){
                        time_seq+=time_seq_step;
                        animation_length=time_seq;
                    }
                    el.css({top:turn*move_top,left:0+def_left}).stop().animate({top:0+def_top},animation_length,easing_out);
                }
            }
            
            timeout=window.setTimeout(function(){
                current_slide.css({position:'relative',top:0,left:0}).hide();
                next_slide.css({position:'relative',top:0,left:0});
                for(i=0;i<current_slide.elements.length;i++){
                    el=current_slide.elements[i];
                    def_left=el.def_left;
                    def_top=el.def_top;
                    el.css({left:def_left});
                    el.css({top:def_top});
                }
                for(i=0;i<next_slide.elements.length;i++){
                    el=next_slide.elements[i];
                    def_left=el.def_left;
                    def_top=el.def_top;
                    el.css({left:def_left});
                    el.css({top:def_top});
                }
                horizontal_direction='';
                callback(next_slide.index+1);
                window.clearTimeout(timeout);
                timeout=null;
                busy=false;
                if(typeof autoswitch_interval_func!='undefined'){
                    window.clearTimeout(autoswitch_interval_func);
                    autoswitch_interval_func=null;
                    _autoSwitch("on");
                }
                rotations_count++;
                },max_time);
                
            return true;
        };

        function randomFromTo(from,to){
            return Math.floor(Math.random()*(to-from+1)+from);
        };

        function setOption(_var,_val){
            switch(_var.toLowerCase()){
                case"direction":
                    if(_val=="vertical"){
                        direction='vertical';
                    }
                    else{
                        direction='horizontal';
                    }
                    break;
                case"callback":
                    if(typeof _val=='function'){
                        callback=_val;
                    }
                    break;
                case"minTime":
                    min_time=parseInt(_val,10);
                    break;
                case"maxTime":
                    max_time=parseInt(_val,10);
                    break;
                case"easing":
                    easing_in='';
                    easing_out='';
                    easing=_val;
                    break;
                case"easingin":
                    easing_in=_val;
                    break;
                case"easingout":
                    easing_out=_val;
                    break;
                case"keyboardnavigate":
                    keyboard_navigate=_val?true:false;
                    break;
                case"random":
                    random=_val?true:false;
                    break;
                case"autoswitch":
                    if(typeof _val=='number'&&_val>0){
                        _autoSwitch("update_interval",_val);
                    }
                    else if(typeof _val=='string'&&(_val.toLowerCase()=='play'||_val.toLowerCase()=='on'||_val.toLowerCase()=='off'||_val.toLowerCase()=='pause')){
                        _autoSwitch(_val.toLowerCase());
                    }
                    else if(typeof _val=='string'&&_val.toLowerCase()=='pause'){
                        _autoSwitch("pause");
                    }
                    break;
            }
        };
        
        function _autoSwitch(type,new_value){
            switch(type){
                case"off":
                    autoswitch=false;
                    if(typeof autoswitch_interval_func!='undefined'){
                        window.clearInterval(autoswitch_interval_func);
                        autoswitch_interval_func=null;
                    }
                    break;
                case"on":
                    _autoSwitch("update_interval",autoswitch_interval);
                    break;
                case"update_interval":
                    autoswitch=true;
                    autoswitch_interval=new_value;
                    if(typeof autoswitch_interval_func!='undefined'){
                        window.clearInterval(autoswitch_interval_func);
                        autoswitch_interval_func=null;
                    }
                    autoswitch_interval_func=setInterval(function(){if(autoswitch){nextSlide();}},autoswitch_interval);
                    break;
                case"play":
                    autoswitch=true;
                    if(typeof autoswitch_interval_func=='undefined'){_autoSwitch("on");}
                    break;
                case"pause":
                    autoswitch=false;
                    break;
            }
        };
        
            
    });
    
}
                                                  

})(jQuery);