/*
 * 
 * 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
 */

;(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:false,history:false,arrows:true,navigator:true,easeFunc:false,easeTime:false,after:false,tracking:false,tracking_pre:false,debug:false},_metadata,options);var that=el;if(!$.ajaxHistory)_options.history=false;var _pw=false;var _pc=false;var _vw=false;var _current=1;_data("width",0);_data("current",_current);$(that).bind("left",_left);$(that).bind("right",_right);$(that).bind("go",_go);$(that).bind("after",_after);_html();_set_options();_set_panel_width();_set_container_width();_set_current_panel();_check_arrows();_arrows();_keyword();_navigator();_move();_debug();function _left(){var _goto=0;var _position=_current-1;if(_current==1){_goto=_pc-1;}else{_goto=_position-1;};$(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;};$(that).trigger("go",[_goto]);if(_options.history)location.hash=_current;}function _go(ev,nr){var _x=-(_pw*nr);_current=_data("current",nr+1);$("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]){$(document).keydown(function(e){if(e==null){keycode=event.keyCode;}else{keycode=e.which;}if(!($(that).css("display")==="none")){if(keycode==sc[0]){$(that).ycodaslider("left");}else if(keycode==sc[1]){$(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();_vw=_pw*_pc;_data("width",_pw);}function _set_options(){if(_options.width){_set_width(_options.width);}if(_options.height){_set_height(_options.height);}if(_options.scroll){_set_scroll();}}function _html(){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">');}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();$(that).bind("go",_go);function _go(ev,nr){$(".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){$('<li><a class="'+_class+'" href="#'+(n+1)+'">'+_lp+'</a></li>').appendTo(_nav);}else{$('<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",$(that).ycodaslider("width"));}}function _bind(){$("div.yslider-nav a",that).each(function(z){$(this).bind("click",function(){$(that).ycodaslider("go",[z]);});});}};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=$.extend({selector:'img',placeholder:"",classcss:"placeholder",threshold:1,effect:"fadeIn",effectspeed:"slow"},options);return this.each(function(nr){var that=this;var _target=$(_options.selector,that);var _total=_target.size();var _current=_get_current();var _call=0;_parse(false,_current);$(that).bind("after",_parse);function _parse(ev,current){_call++;if(_call!=2){var _c=ev?($(that).ycodaslider("current")-1):current;_target.each(function(nr){if(!_is_near(nr,_c,_total,_options.threshold)){_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;if(!ev){$(el).attr("src",_options.placeholder).attr("original",_src).addClass(_options.classcss);}}function _get_current(){return location.hash&&location.hash.slice(1)<=_total?(location.hash.slice(1)-1):0;}function _is_near(nr,current,total,threshold){var _tmax=current+threshold;var _tmin=current-threshold;if(_tmin<0)_tmin=0;if(_tmax>total)_tmax=total;var _left=!((current-threshold)>=0);var _right=(current+threshold)>=total;var _flag=false;if(threshold==0){return nr==current;}else{if(_left||_right)_flag=_expr(nr,total,threshold,_left,_right);return(nr===current||(nr>=_tmin&&nr<=_tmax)||_flag);}}function _expr(nr,total,threshold,left,right){if(left){return(nr>=(total-threshold)&&nr<=total);}if(right){return(nr>=0&&nr<=threshold);}}});};YCodaSlider.Code=function(){return this.each(function(nr){var that=this;var _js=$("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();_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;})(jQuery);