/*!
   --------------------------------
   Infinite Scroll
   --------------------------------
   + https://github.com/paulirish/infinite-scroll
   + version 2.1.0
   + Copyright 2011/12 Paul Irish & Luke Shumard
   + Licensed under the MIT license

   + Documentation: http://infinite-scroll.com/
*/
;(function(e){if(typeof define==="function"&&define.amd){define(["jquery"],e)}else{e(jQuery)}})(function(e,t){"use strict";e.infinitescroll=function(n,r,i){this.element=e(i);if(!this._create(n,r)){this.failed=true}};e.infinitescroll.defaults={loading:{finished:t,finishedMsg:"<em>Congratulations, you've reached the end of the internet.</em>",img:"data:image/gif;base64, ",msg:null,msgText:"<em>Loading the next set of posts...</em>",selector:null,speed:"fast",start:t},state:{isDuringAjax:false,isInvalidPage:false,isDestroyed:false,isDone:false,isPaused:false,isBeyondMaxPage:false,currPage:1},debug:false,behavior:t,binder:e(window),nextSelector:"div.navigation a:first",navSelector:"div.navigation",contentSelector:null,extraScrollPx:150,itemSelector:"div.post",animate:false,pathParse:t,dataType:"html",appendCallback:true,bufferPx:40,errorCallback:function(){},infid:0,pixelsFromNavToBottom:t,path:t,prefill:false,maxPage:t};e.infinitescroll.prototype={_binding:function(n){var r=this,i=r.options;i.v="2.0b2.120520";if(!!i.behavior&&this["_binding_"+i.behavior]!==t){this["_binding_"+i.behavior].call(this);return}if(n!=="bind"&&n!=="unbind"){this._debug("Binding value  "+n+" not valid");return false}if(n==="unbind"){this.options.binder.unbind("smartscroll.infscr."+r.options.infid)}else{this.options.binder[n]("smartscroll.infscr."+r.options.infid,function(){r.scroll()})}this._debug("Binding",n)},_create:function(r,i){var s=e.extend(true,{},e.infinitescroll.defaults,r);this.options=s;var o=e(window);var u=this;if(!u._validate(r)){return false}var a=e(s.nextSelector).attr("href");if(!a){this._debug("Navigation selector not found");return false}s.path=s.path||this._determinepath(a);s.contentSelector=s.contentSelector||this.element;s.loading.selector=s.loading.selector||s.contentSelector;s.loading.msg=s.loading.msg||e('<div id="infscr-loading"><img alt="Loading..." src="'+s.loading.img+'" /><div>'+s.loading.msgText+"</div></div>");(new Image).src=s.loading.img;if(s.pixelsFromNavToBottom===t){s.pixelsFromNavToBottom=e(document).height()-e(s.navSelector).offset().top;this._debug("pixelsFromNavToBottom: "+s.pixelsFromNavToBottom)}var f=this;s.loading.start=s.loading.start||function(){e(s.navSelector).hide();s.loading.msg.appendTo(s.loading.selector).show(s.loading.speed,e.proxy(function(){this.beginAjax(s)},f))};s.loading.finished=s.loading.finished||function(){if(!s.state.isBeyondMaxPage)s.loading.msg.fadeOut(s.loading.speed)};s.callback=function(n,r,u){if(!!s.behavior&&n["_callback_"+s.behavior]!==t){n["_callback_"+s.behavior].call(e(s.contentSelector)[0],r,u)}if(i){i.call(e(s.contentSelector)[0],r,s,u)}if(s.prefill){o.bind("resize.infinite-scroll",n._prefill)}};if(r.debug){if(Function.prototype.bind&&(typeof console==="object"||typeof console==="function")&&typeof console.log==="object"){["log","info","warn","error","assert","dir","clear","profile","profileEnd"].forEach(function(e){console[e]=this.call(console[e],console)},Function.prototype.bind)}}this._setup();if(s.prefill){this._prefill()}return true},_prefill:function(){function i(){return e(n.options.contentSelector).height()<=r.height()}var n=this;var r=e(window);this._prefill=function(){if(i()){n.scroll()}r.bind("resize.infinite-scroll",function(){if(i()){r.unbind("resize.infinite-scroll");n.scroll()}})};this._prefill()},_debug:function(){if(true!==this.options.debug){return}if(typeof console!=="undefined"&&typeof console.log==="function"){if(Array.prototype.slice.call(arguments).length===1&&typeof Array.prototype.slice.call(arguments)[0]==="string"){console.log(Array.prototype.slice.call(arguments).toString())}else{console.log(Array.prototype.slice.call(arguments))}}else if(!Function.prototype.bind&&typeof console!=="undefined"&&typeof console.log==="object"){Function.prototype.call.call(console.log,console,Array.prototype.slice.call(arguments))}},_determinepath:function(n){var r=this.options;if(!!r.behavior&&this["_determinepath_"+r.behavior]!==t){return this["_determinepath_"+r.behavior].call(this,n)}if(!!r.pathParse){this._debug("pathParse manual");return r.pathParse(n,this.options.state.currPage+1)}else if(n.match(/^(.*?)\b2\b(.*?$)/)){n=n.match(/^(.*?)\b2\b(.*?$)/).slice(1)}else if(n.match(/^(.*?)2(.*?$)/)){if(n.match(/^(.*?page=)2(\/.*|$)/)){n=n.match(/^(.*?page=)2(\/.*|$)/).slice(1);return n}n=n.match(/^(.*?)2(.*?$)/).slice(1)}else{if(n.match(/^(.*?page=)1(\/.*|$)/)){n=n.match(/^(.*?page=)1(\/.*|$)/).slice(1);return n}else{this._debug("Sorry, we couldn't parse your Next (Previous Posts) URL. Verify your the css selector points to the correct A tag. If you still get this error: yell, scream, and kindly ask for help at infinite-scroll.com.");r.state.isInvalidPage=true}}this._debug("determinePath",n);return n},_error:function(n){var r=this.options;if(!!r.behavior&&this["_error_"+r.behavior]!==t){this["_error_"+r.behavior].call(this,n);return}if(n!=="destroy"&&n!=="end"){n="unknown"}this._debug("Error",n);if(n==="end"||r.state.isBeyondMaxPage){this._showdonemsg()}r.state.isDone=true;r.state.currPage=1;r.state.isPaused=false;r.state.isBeyondMaxPage=false;this._binding("unbind")},_loadcallback:function(r,i,s){var o=this.options,u=this.options.callback,a=o.state.isDone?"done":!o.appendCallback?"no-append":"append",f;if(!!o.behavior&&this["_loadcallback_"+o.behavior]!==t){this["_loadcallback_"+o.behavior].call(this,r,i);return}switch(a){case"done":this._showdonemsg();return false;case"no-append":if(o.dataType==="html"){i="<div>"+i+"</div>";i=e(i).find(o.itemSelector)}if(i.length===0){return this._error("end")}break;case"append":var l=r.children();if(l.length===0){return this._error("end")}f=document.createDocumentFragment();while(r[0].firstChild){f.appendChild(r[0].firstChild)}this._debug("contentSelector",e(o.contentSelector)[0]);e(o.contentSelector)[0].appendChild(f);i=l.get();break}o.loading.finished.call(e(o.contentSelector)[0],o);if(o.animate){var c=e(window).scrollTop()+e(o.loading.msg).height()+o.extraScrollPx+"px";e("html,body").animate({scrollTop:c},800,function(){o.state.isDuringAjax=false})}if(!o.animate){o.state.isDuringAjax=false}u(this,i,s);if(o.prefill){this._prefill()}},_nearbottom:function(){var r=this.options,i=0+e(document).height()-r.binder.scrollTop()-e(window).height();if(!!r.behavior&&this["_nearbottom_"+r.behavior]!==t){return this["_nearbottom_"+r.behavior].call(this)}this._debug("math:",i,r.pixelsFromNavToBottom);return i-r.bufferPx<r.pixelsFromNavToBottom},_pausing:function(n){var r=this.options;if(!!r.behavior&&this["_pausing_"+r.behavior]!==t){this["_pausing_"+r.behavior].call(this,n);return}if(n!=="pause"&&n!=="resume"&&n!==null){this._debug("Invalid argument. Toggling pause value instead")}n=n&&(n==="pause"||n==="resume")?n:"toggle";switch(n){case"pause":r.state.isPaused=true;break;case"resume":r.state.isPaused=false;break;case"toggle":r.state.isPaused=!r.state.isPaused;break}this._debug("Paused",r.state.isPaused);return false},_setup:function(){var n=this.options;if(!!n.behavior&&this["_setup_"+n.behavior]!==t){this["_setup_"+n.behavior].call(this);return}this._binding("bind");return false},_showdonemsg:function(){var r=this.options;if(!!r.behavior&&this["_showdonemsg_"+r.behavior]!==t){this["_showdonemsg_"+r.behavior].call(this);return}r.loading.msg.find("img").hide().parent().find("div").html(r.loading.finishedMsg).animate({opacity:1},2e3,function(){e(this).parent().fadeOut(r.loading.speed)});r.errorCallback.call(e(r.contentSelector)[0],"done")},_validate:function(n){for(var r in n){if(r.indexOf&&r.indexOf("Selector")>-1&&e(n[r]).length===0){this._debug("Your "+r+" found no elements.");return false}}return true},bind:function(){this._binding("bind")},destroy:function(){this.options.state.isDestroyed=true;this.options.loading.finished();return this._error("destroy")},pause:function(){this._pausing("pause")},resume:function(){this._pausing("resume")},beginAjax:function(r){var i=this,s=r.path,o,u,a,f;r.state.currPage++;if(r.maxPage!==t&&r.state.currPage>r.maxPage){r.state.isBeyondMaxPage=true;this.destroy();return}o=e(r.contentSelector).is("table, tbody")?e("<tbody/>"):e("<div/>");u=typeof s==="function"?s(r.state.currPage):s.join(r.state.currPage);i._debug("heading into ajax",u);a=r.dataType==="html"||r.dataType==="json"?r.dataType:"html+callback";if(r.appendCallback&&r.dataType==="html"){a+="+callback"}switch(a){case"html+callback":i._debug("Using HTML via .load() method");o.load(u+" "+r.itemSelector,t,function(t){i._loadcallback(o,t,u)});break;case"html":i._debug("Using "+a.toUpperCase()+" via $.ajax() method");e.ajax({url:u,dataType:r.dataType,complete:function(t,n){f=typeof t.isResolved!=="undefined"?t.isResolved():n==="success"||n==="notmodified";if(f){i._loadcallback(o,t.responseText,u)}else{i._error("end")}}});break;case"json":i._debug("Using "+a.toUpperCase()+" via $.ajax() method");e.ajax({dataType:"json",type:"GET",url:u,success:function(e,n,s){f=typeof s.isResolved!=="undefined"?s.isResolved():n==="success"||n==="notmodified";if(r.appendCallback){if(r.template!==t){var a=r.template(e);o.append(a);if(f){i._loadcallback(o,a)}else{i._error("end")}}else{i._debug("template must be defined.");i._error("end")}}else{if(f){i._loadcallback(o,e,u)}else{i._error("end")}}},error:function(){i._debug("JSON ajax request failed.");i._error("end")}});break}},retrieve:function(r){r=r||null;var i=this,s=i.options;if(!!s.behavior&&this["retrieve_"+s.behavior]!==t){this["retrieve_"+s.behavior].call(this,r);return}if(s.state.isDestroyed){this._debug("Instance is destroyed");return false}s.state.isDuringAjax=true;s.loading.start.call(e(s.contentSelector)[0],s)},scroll:function(){var n=this.options,r=n.state;if(!!n.behavior&&this["scroll_"+n.behavior]!==t){this["scroll_"+n.behavior].call(this);return}if(r.isDuringAjax||r.isInvalidPage||r.isDone||r.isDestroyed||r.isPaused){return}if(!this._nearbottom()){return}this.retrieve()},toggle:function(){this._pausing()},unbind:function(){this._binding("unbind")},update:function(n){if(e.isPlainObject(n)){this.options=e.extend(true,this.options,n)}}};e.fn.infinitescroll=function(n,r){var i=typeof n;switch(i){case"string":var s=Array.prototype.slice.call(arguments,1);this.each(function(){var t=e.data(this,"infinitescroll");if(!t){return false}if(!e.isFunction(t[n])||n.charAt(0)==="_"){return false}t[n].apply(t,s)});break;case"object":this.each(function(){var t=e.data(this,"infinitescroll");if(t){t.update(n)}else{t=new e.infinitescroll(n,r,this);if(!t.failed){e.data(this,"infinitescroll",t)}}});break}return this};var n=e.event,r;n.special.smartscroll={setup:function(){e(this).bind("scroll",n.special.smartscroll.handler)},teardown:function(){e(this).unbind("scroll",n.special.smartscroll.handler)},handler:function(t,n){var i=this,s=arguments;t.type="smartscroll";if(r){clearTimeout(r)}r=setTimeout(function(){e(i).trigger("smartscroll",s)},n==="execAsap"?0:100)}};e.fn.smartscroll=function(e){return e?this.bind("smartscroll",e):this.trigger("smartscroll",["execAsap"])}});
