/* 
 *  
 * YCodaSlider 3.0 
 * @requires jQuery v1.3.2 
 *  
 * Copyright (c) 2008 Massimiliano Balestrieri 
 * Examples and docs at: http://maxb.net/blog/ 
 * Licensed GPL licenses: 
 * http://www.gnu.org/licenses/gpl.html 
 * 
 * Based on Gian Carlo Mingati's slideViewer 
 * http://www.gcmingati.net/wordpress/wp-content/lab/jquery/imagestrip/imageslide-plugin.html 
 * Based on Niall Doherty's coda-slider 
 * http://www.ndoherty.com/coda-slider   
 * Inspired by the clever folks at http://www.panic.com/coda 
 */ 
 
//jQuery.noConflict(); 
 
;(function($){ 
     
 
YCodaSlider = {}; 
 
YCodaSlider.Init = function(options, data){ 
    if(typeof options == "string"){ 
        return YCodaSlider.Api[options](this, data); 
    }else{ 
        return this.each(function(){ 
            new YCodaSlider.Core(this, options); 
        }); 
    }     
}; 
 
YCodaSlider.Api = { 
    current : function(el){ 
        return $(el).data("current"); 
    }, 
    width : function(el){ 
        return $(el).data("width"); 
    }, 
    count : function(el){ 
        return $(el).data("count"); 
    }, 
    left : function(el){ 
        return $(el).trigger("left"); 
    }, 
    right : function(el){ 
        return $(el).trigger("right"); 
    }, 
    go : function(el, nr){ 
        return $(el).trigger("go", nr); 
    } 
}; 
 
YCodaSlider.Core = function(el, options){ 
     
    var _metadata = {}; 
    if($.metadata) 
        _metadata = $(el).metadata(); 
     
    var _options = $.extend({              
		height   :   false, 
        width    :   false, 
        shortcut :  [37,39], 
        id       :   false, 
        scroll   :   true,//false 
        history  :   false,//false REMOVE? 
        arrows     :   true, 
        navigator:   false, 
        easeFunc :   false, 
        easeTime :   false, 
        after     :   false, 
        tracking :   false, 
        tracking_pre :  false, 
        debug    :   false//false 
    },_metadata,options); 
     
    var that = el; 
     
    if(!$.ajaxHistory) 
        _options.history = false; 
     
    //private attrs 
    var _pw = false;//panels width 
    var _pc = false;//panels count 
    var _vw = false;//viewer width 
    //#?var _nw = false;//? width 
    var _current = 2; 
     
         
    //INIT PUBLIC ATTRS 
    _data("width", 0); 
    _data("current", _current); 
     
    //PUBLIC EVENTS 
    $(that).bind("left", _left); 
    $(that).bind("right", _right); 
    $(that).bind("go", _go); 
    $(that).bind("after", _after); 
     
     
     
    //$(that).data("panel_width", _pw); 
     
    _html(); 
    _set_options(); 
    _set_panel_width(); 
    _set_container_width(); 
    _set_current_panel(); 
    _check_arrows(); 
    _arrows(); 
    _keyword(); 
    _navigator(); 
    _move(); 
     
    _debug(); 
     
     
     
    function _left(){ 
        var _goto = 0; 
        var _position = _current - 1;  
        if (_current == 1) { 
            _goto = _pc - 1; 
        } else { 
            _goto = _position - 1; 
        }; 
        //console.log(_goto); 
         
        $(that).trigger("go", [_goto]); 
           
        var _history = _goto + 1;         
        if(_options.history) 
            location.hash = _history; 
             
    } 
    function _right(){ 
        var _goto = 0;  
        var _position = _current - 1;  
        if (_current == _pc) { 
            _goto = 0; 
        } else { 
            _goto = _position + 1; 
        }; 
        //console.log(_goto); 
         
        $(that).trigger("go", [_goto]); 
         
        if(_options.history) 
            location.hash = _current; 
             
    } 
    function _go(ev, nr){ 
         
        //console.log(ev); 
        //console.log(nr); 
        //console.log(_current); 
        //if(!ev && (nr + 1) == _current) 
        //    return; 
             
             
        var _x = - ( _pw * nr); 
        _current = _data("current", nr + 1);     
         
        $("div.yslider-viewer",that).animate({scrollTop : 0 },_options.easeTime,_options.easeFunc); 
     
        $("div.yslider-container",that) 
        .animate({left: _x } ,_options.easeTime,_options.easeFunc); 
         
        $(that).trigger("after"); 
    } 
    function _after(){ 
        if(_options.after) 
            _after(); 
    } 
     
    function _is_valid_current(){ 
        return _options.history && location.hash && parseInt(location.hash.slice(1)) <= _pc;    
    } 
     
    function _move(){ 
        $(that).trigger("go", [(_current - 1)]); 
         
        if(_options.history) 
            location.hash = _current; 
 
    } 
    function _debug(){ 
        if(_options.debug){ 
            $('div.yslider-viewer',that).css({ 
                width : 10653, 
                overflow : 'auto' 
            }); 
        } 
    } 
    function _keyword(){ 
        var sc = _options.shortcut; 
        if(sc && sc[0] && sc[1]){ 
            $(document).keydown(function(e){ 
                if (e == null) { // ie 
                    keycode = event.keyCode; 
                } else { // mozilla 
                    keycode = e.which; 
                } 
                //settabili - se non č nascosto muovi 
                if(!($(that).css("display") === "none")){ 
                    if(keycode == sc[0]){ // display previous image 
                       //$("div.yslider-navl a",el).trigger("click", el); 
                       $(that).ycodaslider("left"); 
                    } else if(keycode == sc[1]){ // display next image 
                       //$("div.yslider-navr a",el).trigger("click", el); 
                       $(that).ycodaslider("right"); 
                    }   
                } 
            }); 
        } 
    } 
    function _arrows(){ 
        if(_options.arrows) 
            new YCodaSlider.Arrows(that, _options); 
    } 
 
    function _navigator(){ 
        if(_options.navigator){ 
            new YCodaSlider.Navigator(that, _options); 
        } 
    } 
    function _check_arrows(){ 
        if(_pc <= 1) 
            _options.arrows = false; 
    } 
    function _set_current_panel(){ 
        if(_is_valid_current()){ 
            _current   = parseInt(location.hash.slice(1)) || 1; 
        } 
         
    } 
    function _set_container_width(){ 
        var _container = $("div.yslider-container",that); 
        _container.css("width" , _vw); 
    } 
    function _set_panel_width(){ 
        var _panels = $(that).find("div.yslider-panel"); 
        _pw = _options.width || _panels.width(); 
        _pc = _panels.size();//panel 
        _vw = _pw * _pc;//viewer 
        //#?_nw = _pw;//el.ycodaslider.pc * 2 ? 
         
        _data("width", _pw); 
        //??_data("viewer", _vw); 
        //??_data("count", _pc) 
         
    } 
    function _set_options(){ 
 
        if(_options.width){ 
            _set_width(_options.width); 
        } 
 
        if(_options.height){ 
            _set_height(_options.height); 
        } 
         
        if(_options.scroll){ 
            _set_scroll(); 
        } 
 
    } 
    function _html(){ 
        //#?el.id = el.ycodaslider.options.id || el.id || 'yslider-' + YCodaSlider.Base.cnt;//id 
         
        var _html = '<div class="yslider-wrap"><div class="yslider-viewer"><div class="yslider-container">'; 
        var _panels = $(".yslider-panelwrapper", that); 
         
        $(that).empty(); 
        $(that) 
        .append(_html); 
         
        $('.yslider-container', that).append(_panels); 
        _panels.wrap('<div class="yslider-panel">'); 
         
        //#?if(!_options.sidebars) 
        //#?    $(".yslider-wrap", el).width($(".yslider-wrap", that).width() - 100); 
    }     
 
    function _set_scroll(){ 
        $('.yslider-viewer', that).css({"overflow-y":"auto"}); 
    } 
    function _set_height(height){ 
        $('.yslider-viewer', that).css("height", height); 
    } 
    function _set_width(width){ 
        $(that).css("width", width + 100); 
        $('.yslider-panel,.yslider-viewer', that).css("width", width); 
    } 
    function _data(key,val){ 
        if(val){ 
            $(that).data(key,val); 
            return val; 
        }else{ 
            return $(that).data(key); 
        }  
    } 
     
}; 
 
YCodaSlider.Utils = { 
    css : function(url){ 
        $('head').append('<link type="text/css" href="'+url+'" rel="stylesheet" />'); 
    } 
}; 
 
YCodaSlider.Arrows = function(el, options){ 
     
    var that = el; 
     
    _arrows(); 
    _debug(); 
    _bind(); 
     
    function _arrows(){ 
        var _viewer = $("div.yslider-viewer",that); 
       // _viewer.before('<div class="yslider-navl"><a href="#">Left</a></div>'); 
        //_viewer.after('<div class="yslider-navr"><a href="#">Right</a></div>'); 
    } 
    function _debug(){ 
        if(options.debug){ 
            $(".yslider-navl" , that).css("left","-50px"); 
        } 
    } 
    function _bind(){ 
         
        $("div.yslider-navl a",that).click(function(){ 
            $(that).ycodaslider("left"); 
            return false; 
        }); 
        $("div.yslider-navr a",that).click(function(){ 
            $(that).ycodaslider("right"); 
            return false; 
        }); 
         
    } 
     
}; 
 
YCodaSlider.Navigator = function(el, options){ 
     
    var that = el; 
     
    _navigator(); 
    _bind(); 
     
    //PUBLIC EVENTS 
    $(that).bind("go", _go); 
     
    function _go(ev,nr){ 
        //alert("GO NAVIGATOR"); 
        $(".yslider-nav",that).find("a").not(nr).removeClass("current"); 
        $(".yslider-nav",that).find("a").eq(nr).addClass("current"); 
    } 
     
    function _navigator(){ 
         
        var _viewer = $("div.yslider-viewer",that); 
        _viewer.before('<div class="yslider-nav"><ul></ul></div>'); 
         
        var _nav = $("div.yslider-nav ul",that); 
         
        $("div.yslider-panel",that) 
        .each(function(n) { 
            var _lp = $("div.yslider-panelwrapper",this).attr("title") || (n+1); 
            var _class = ''; 
            var _prefix = ''; 
            if(options.tracking_pre) 
                _prefix = options.tracking_pre + '/'; 
                  
            if(options.tracking && $.fn.janalytics) 
                _class = "tracking {label : '/ycodaslider/"+_prefix+_lp+"'}"; 
             
            if(options.history){ 
                $('<li><a class="'+_class+'" href="#' + (n + 1) + '">' + _lp + '</a></li>') 
                .appendTo(_nav); 
                // doppia invocazione. sia con il vecchio history che con il nuovo. 
                //.click(function(){ 
                //   return false;//semp     
                //});  
            }else{ 
                $('<li><a class="'+_class+'" href="#">' + _lp + '</a></li>') 
                .appendTo(_nav) 
                .click(function(){ 
                   return false;     
                }); 
            } 
        }); 
         
         
        if(options.width){ 
            _nav.parent().css("width" , options.width); 
        }else{ 
            _nav.parent().css("width" , $(that).ycodaslider("width")); 
        }  
    } 
     
    function _bind(){ 
                 
        // Tab nav 
        $("div.yslider-nav a",that).each(function(z) { 
            //console.log(this); 
            $(this).bind("click", function() { 
                //console.log("invoco go"); 
                $(that).ycodaslider("go", [z]); 
                //return false; 
            }); 
        }); 
         
         
    } 
     
}; 
 
YCodaSlider.Gallery = function(){ 
    return this.each(function(nr){ 
            var that = this; 
            var _img = $('img', that); 
           _img.each(function(z){ 
                $(this).wrap('<div style="padding:0px" class="yslider-panelwrapper" title="'+ (z + 1) +'">'); 
            }); 
    }); 
}; 
 
YCodaSlider.Lazy = function(options){ 
     
    var _options = $.extend({ 
         selector   : 'img', 
         //type       : "img", 
         placeholder: "", 
         classcss    : "placeholder", 
         threshold  : 1, 
         effect     : "fadeIn", 
         effectspeed: "slow" 
    }, options); 
     
    return this.each(function(nr){ 
        var that = this; 
        var _target = $(_options.selector, that); 
        var _total = _target.size(); 
        var _current = _get_current(); 
        var _call = 0; 
         
         
        _parse(false, _current); 
        //PUBLIC EVENTS 
        $(that).bind("after", _parse); 
         
        function _parse(ev, current){ 
            /* 
             * il costruttore non aspetta ycodaslider. se devo risparmiare bytes lo devo fare subito. 
             * ycodaslider all'avvio invocherā l'evento after. 
             * il primo lo ignoro per evitare di fare lo stesso parsing due volte.  
             */ 
            _call++; 
            if(_call != 2){//ignoro il primo evento. 
                var _c = ev ? ($(that).ycodaslider("current") - 1) : current; 
                //console.log(_c); 
                _target.each(function(nr){ 
                    if(!_is_near(nr, _c, _total, _options.threshold)){ 
                        //console.log("nascondo" + nr); 
                        _disappear(this, ev); 
                    }else{ 
                        _appear(false, nr); 
                    } 
                }); 
            } 
        } 
         
        function _appear(ev, nr){ 
            var _img = _target.eq(nr); 
            var _src = _img.attr("original"); 
            if(_src){ 
                _img 
                .hide() 
                .attr("src", _src) 
                .attr("original", "") 
                [_options.effect](_options.effectspeed) 
                .removeClass(_options.classcss); 
            } 
        } 
         
        function _disappear(el, ev){ 
            var _src = el.src; 
            //console.log(_src); 
            if(!ev){ 
                $(el) 
                .attr("src", _options.placeholder) 
                .attr("original", _src) 
                .addClass(_options.classcss); 
            } 
        } 
         
        function _get_current(){ 
            return location.hash && location.hash.slice(1) <= _total ? (location.hash.slice(1) - 1) : 0;//mmmh 
        } 
         
        function _is_near(nr, current, total, threshold){ 
            var _tmax = current + threshold; 
            var _tmin = current - threshold; 
            if(_tmin < 0) _tmin = 0;  
            if(_tmax > total)  _tmax = total; 
            var _left = !((current - threshold) >= 0); 
            var _right = (current + threshold) >= total; 
            var _flag = false; 
            if(threshold == 0){ 
                return nr == current; 
            }else{ 
                if(_left || _right) 
                    _flag = _expr(nr, total, threshold, _left, _right);  
                return( 
                    nr === current ||                //1 : current č uguale  
                    (nr >= _tmin && nr <= _tmax) ||  //nr č compreso nella soglia? 
                    _flag 
                ); 
            } 
        } 
         
        function _expr(nr, total, threshold, left, right){ 
            if(left){ 
                return (nr >= (total - threshold) && nr <= total);// se siamo a sinistra 
            }   
            if(right){ 
                return (nr >= 0 && nr <= threshold);// se siamo a sinistra 
            } 
        } 
    }); 
}; 
 
YCodaSlider.Code = function(){ 
    return this.each(function(nr){ 
             
        var that = this; 
         
        var _js = $("a",this); 
        var _j = $(this).parent(); 
         
        _js.each(function(nr){ 
           var _href = $(this).attr("href"); 
           var _that = this; 
           var _css = $(this).attr("class"); 
           var _html = '<div class="yslider-panelwrapper" title="'+ $(_that).text() +'">'; 
           $(_that).wrap(_html); 
           var _panel = $(_that).parent(); 
           //console.log(panel); 
           _panel.empty(); 
           $.get(_href, function(data){ 
                  _panel.html('<pre><code class="'+_css+'">'+(_html_encode(data))+'</code></pre>'); 
                  if($.fn.chili) 
                      $("code", _panel).chili(); 
           }); 
            
        }); 
 
        function _html_encode(s) { 
            var str = new String(s); 
            str = str.replace(/&/g, "&amp;"); 
            str = str.replace(/</g, "&lt;"); 
            str = str.replace(/>/g, "&gt;"); 
            str = str.replace(/"/g, "&quot;"); 
            return str; 
        } 
         
    }); 
}; 
 
YCodaSlider.Feeds = function(){ 
    return this.each(function(nr){ 
        if(!$.fn.gFeed){ 
            alert("Include jQuery gFeed plugin"); 
            return; 
        } 
         
        var that = this; 
        var _feeds = $("a",this); 
        _feeds.each(function(nr){ 
            var _that = this; 
            var _href = $(_that).attr("href"); 
            var _html = '<div class="yslider-panelwrapper" title="'+ $(_that).text() +'">'; 
            $(_that).wrap(_html); 
            var _panel = $(_that).parent(); 
            _panel.empty(); 
             
            $(_that).gFeed( { title : _href, target: _panel } );  
        }); 
    }); 
}; 
 
 
$.fn.ycodaslider = YCodaSlider.Init; 
$.fn.ycodagallery = YCodaSlider.Gallery; 
$.fn.ycodalazy = YCodaSlider.Lazy; 
$.fn.ycodacode = YCodaSlider.Code; 
$.fn.ycodafeeds = YCodaSlider.Feeds; 
$.fn.ycodacss = YCodaSlider.Utils.css; 
 
//return YCodaSlider; 
 
})(jQuery);