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null==a?!c.isEmpty(this.changed):c.has(this.changed,a)},changedAttributes:function(a){if(!a)return!!this.hasChanged()&&c.clone(this.changed);var b=this._changing?this._previousAttributes:this.attributes,d={};for(var e in a){var f=a[e];c.isEqual(b[e],f)||(d[e]=f)}return!!c.size(d)&&d},previous:function(a){return null!=a&&this._previousAttributes?this._previousAttributes[a]:null},previousAttributes:function(){return c.clone(this._previousAttributes)},fetch:function(a){a=c.extend({parse:!0},a);var b=this,d=a.success;return a.success=function(c){var e=a.parse?b.parse(c,a):c;return!!b.set(e,a)&&(d&&d.call(a.context,b,c,a),void b.trigger("sync",b,c,a))},P(this,a),this.sync("read",this,a)},save:function(a,b,d){var e;null==a||"object"==typeof a?(e=a,d=b):(e={})[a]=b,d=c.extend({validate:!0,parse:!0},d);var f=d.wait;if(e&&!f){if(!this.set(e,d))return!1}else if(!this._validate(e,d))return!1;var g=this,h=d.success,i=this.attributes;d.success=function(a){g.attributes=i;var 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this.constructor(this.attributes)},isNew:function(){return!this.has(this.idAttribute)},isValid:function(a){return this._validate({},c.extend({},a,{validate:!0}))},_validate:function(a,b){if(!b.validate||!this.validate)return!0;a=c.extend({},this.attributes,a);var d=this.validationError=this.validate(a,b)||null;return!d||(this.trigger("invalid",this,d,c.extend(b,{validationError:d})),!1)}});var u={keys:1,values:1,pairs:1,invert:1,pick:0,omit:0,chain:1,isEmpty:1};h(t,u,"attributes");var v=b.Collection=function(a,b){b||(b={}),b.model&&(this.model=b.model),void 0!==b.comparator&&(this.comparator=b.comparator),this._reset(),this.initialize.apply(this,arguments),a&&this.reset(a,c.extend({silent:!0},b))},w={add:!0,remove:!0,merge:!0},x={add:!0,remove:!1},y=function(a,b,c){c=Math.min(Math.max(c,0),a.length);var d,e=Array(a.length-c),f=b.length;for(d=0;d<e.length;d++)e[d]=a[d+c];for(d=0;d<f;d++)a[d+c]=b[d];for(d=0;d<e.length;d++)a[d+f+c]=e[d]};c.extend(v.prototype,k,{model:t,initialize:function(){},toJSON:function(a){return this.map(function(b){return b.toJSON(a)})},sync:function(){return b.sync.apply(this,arguments)},add:function(a,b){return this.set(a,c.extend({merge:!1},b,x))},remove:function(a,b){b=c.extend({},b);var d=!c.isArray(a);a=d?[a]:a.slice();var e=this._removeModels(a,b);return!b.silent&&e.length&&(b.changes={added:[],merged:[],removed:e},this.trigger("update",this,b)),d?e[0]:e},set:function(a,b){if(null!=a){b=c.extend({},w,b),b.parse&&!this._isModel(a)&&(a=this.parse(a,b)||[]);var d=!c.isArray(a);a=d?[a]:a.slice();var e=b.at;null!=e&&(e=+e),e>this.length&&(e=this.length),e<0&&(e+=this.length+1);var f,g,h=[],i=[],j=[],k=[],l={},m=b.add,n=b.merge,o=b.remove,p=!1,q=this.comparator&&null==e&&b.sort!==!1,r=c.isString(this.comparator)?this.comparator:null;for(g=0;g<a.length;g++){f=a[g];var s=this.get(f);if(s){if(n&&f!==s){var t=this._isModel(f)?f.attributes:f;b.parse&&(t=s.parse(t,b)),s.set(t,b),j.push(s),q&&!p&&(p=s.hasChanged(r))}l[s.cid]||(l[s.cid]=!0,h.push(s)),a[g]=s}else m&&(f=a[g]=this._prepareModel(f,b),f&&(i.push(f),this._addReference(f,b),l[f.cid]=!0,h.push(f)))}if(o){for(g=0;g<this.length;g++)f=this.models[g],l[f.cid]||k.push(f);k.length&&this._removeModels(k,b)}var u=!1,v=!q&&m&&o;if(h.length&&v?(u=this.length!==h.length||c.some(this.models,function(a,b){return a!==h[b]}),this.models.length=0,y(this.models,h,0),this.length=this.models.length):i.length&&(q&&(p=!0),y(this.models,i,null==e?this.length:e),this.length=this.models.length),p&&this.sort({silent:!0}),!b.silent){for(g=0;g<i.length;g++)null!=e&&(b.index=e+g),f=i[g],f.trigger("add",f,this,b);(p||u)&&this.trigger("sort",this,b),(i.length||k.length||j.length)&&(b.changes={added:i,removed:k,merged:j},this.trigger("update",this,b))}return d?a[0]:a}},reset:function(a,b){b=b?c.clone(b):{};for(var d=0;d<this.models.length;d++)this._removeReference(this.models[d],b);return b.previousModels=this.models,this._reset(),a=this.add(a,c.extend({silent:!0},b)),b.silent||this.trigger("reset",this,b),a},push:function(a,b){return this.add(a,c.extend({at:this.length},b))},pop:function(a){var b=this.at(this.length-1);return this.remove(b,a)},unshift:function(a,b){return this.add(a,c.extend({at:0},b))},shift:function(a){var b=this.at(0);return this.remove(b,a)},slice:function(){return f.apply(this.models,arguments)},get:function(a){if(null!=a)return this._byId[a]||this._byId[this.modelId(a.attributes||a)]||a.cid&&this._byId[a.cid]},has:function(a){return null!=this.get(a)},at:function(a){return a<0&&(a+=this.length),this.models[a]},where:function(a,b){return this[b?"find":"filter"](a)},findWhere:function(a){return this.where(a,!0)},sort:function(a){var b=this.comparator;if(!b)throw new Error("Cannot sort a set without a comparator");a||(a={});var d=b.length;return c.isFunction(b)&&(b=c.bind(b,this)),1===d||c.isString(b)?this.models=this.sortBy(b):this.models.sort(b),a.silent||this.trigger("sort",this,a),this},pluck:function(a){return this.map(a+"")},fetch:function(a){a=c.extend({parse:!0},a);var b=a.success,d=this;return a.success=function(c){var e=a.reset?"reset":"set";d[e](c,a),b&&b.call(a.context,d,c,a),d.trigger("sync",d,c,a)},P(this,a),this.sync("read",this,a)},create:function(a,b){b=b?c.clone(b):{};var d=b.wait;if(a=this._prepareModel(a,b),!a)return!1;d||this.add(a,b);var e=this,f=b.success;return b.success=function(a,b,c){d&&e.add(a,c),f&&f.call(c.context,a,b,c)},a.save(null,b),a},parse:function(a,b){return a},clone:function(){return new this.constructor(this.models,{model:this.model,comparator:this.comparator})},modelId:function(a){return a[this.model.prototype.idAttribute||"id"]},_reset:function(){this.length=0,this.models=[],this._byId={}},_prepareModel:function(a,b){if(this._isModel(a))return a.collection||(a.collection=this),a;b=b?c.clone(b):{},b.collection=this;var d=new this.model(a,b);return d.validationError?(this.trigger("invalid",this,d.validationError,b),!1):d},_removeModels:function(a,b){for(var c=[],d=0;d<a.length;d++){var e=this.get(a[d]);if(e){var f=this.indexOf(e);this.models.splice(f,1),this.length--,delete this._byId[e.cid];var g=this.modelId(e.attributes);null!=g&&delete this._byId[g],b.silent||(b.index=f,e.trigger("remove",e,this,b)),c.push(e),this._removeReference(e,b)}}return c},_isModel:function(a){return a instanceof t},_addReference:function(a,b){this._byId[a.cid]=a;var c=this.modelId(a.attributes);null!=c&&(this._byId[c]=a),a.on("all",this._onModelEvent,this)},_removeReference:function(a,b){delete this._byId[a.cid];var c=this.modelId(a.attributes);null!=c&&delete this._byId[c],this===a.collection&&delete a.collection,a.off("all",this._onModelEvent,this)},_onModelEvent:function(a,b,c,d){if(b){if(("add"===a||"remove"===a)&&c!==this)return;if("destroy"===a&&this.remove(b,d),"change"===a){var e=this.modelId(b.previousAttributes()),f=this.modelId(b.attributes);e!==f&&(null!=e&&delete this._byId[e],null!=f&&(this._byId[f]=b))}}this.trigger.apply(this,arguments)}});var z={forEach:3,each:3,map:3,collect:3,reduce:0,foldl:0,inject:0,reduceRight:0,foldr:0,find:3,detect:3,filter:3,select:3,reject:3,every:3,all:3,some:3,any:3,include:3,includes:3,contains:3,invoke:0,max:3,min:3,toArray:1,size:1,first:3,head:3,take:3,initial:3,rest:3,tail:3,drop:3,last:3,without:0,difference:0,indexOf:3,shuffle:1,lastIndexOf:3,isEmpty:1,chain:1,sample:3,partition:3,groupBy:3,countBy:3,sortBy:3,indexBy:3,findIndex:3,findLastIndex:3};h(v,z,"models");var A=b.View=function(a){this.cid=c.uniqueId("view"),c.extend(this,c.pick(a,C)),this._ensureElement(),this.initialize.apply(this,arguments)},B=/^(\S+)\s*(.*)$/,C=["model","collection","el","id","attributes","className","tagName","events"];c.extend(A.prototype,k,{tagName:"div",$:function(a){return this.$el.find(a)},initialize:function(){},render:function(){return this},remove:function(){return this._removeElement(),this.stopListening(),this},_removeElement:function(){this.$el.remove()},setElement:function(a){return this.undelegateEvents(),this._setElement(a),this.delegateEvents(),this},_setElement:function(a){this.$el=a instanceof b.$?a:b.$(a),this.el=this.$el[0]},delegateEvents:function(a){if(a||(a=c.result(this,"events")),!a)return this;this.undelegateEvents();for(var b in a){var d=a[b];if(c.isFunction(d)||(d=this[d]),d){var e=b.match(B);this.delegate(e[1],e[2],c.bind(d,this))}}return this},delegate:function(a,b,c){return this.$el.on(a+".delegateEvents"+this.cid,b,c),this},undelegateEvents:function(){return this.$el&&this.$el.off(".delegateEvents"+this.cid),this},undelegate:function(a,b,c){return this.$el.off(a+".delegateEvents"+this.cid,b,c),this},_createElement:function(a){return document.createElement(a)},_ensureElement:function(){if(this.el)this.setElement(c.result(this,"el"));else{var a=c.extend({},c.result(this,"attributes"));this.id&&(a.id=c.result(this,"id")),this.className&&(a["class"]=c.result(this,"className")),this.setElement(this._createElement(c.result(this,"tagName"))),this._setAttributes(a)}},_setAttributes:function(a){this.$el.attr(a)}}),b.sync=function(a,d,e){var f=D[a];c.defaults(e||(e={}),{emulateHTTP:b.emulateHTTP,emulateJSON:b.emulateJSON});var g={type:f,dataType:"json"};if(e.url||(g.url=c.result(d,"url")||O()),null!=e.data||!d||"create"!==a&&"update"!==a&&"patch"!==a||(g.contentType="application/json",g.data=JSON.stringify(e.attrs||d.toJSON(e))),e.emulateJSON&&(g.contentType="application/x-www-form-urlencoded",g.data=g.data?{model:g.data}:{}),e.emulateHTTP&&("PUT"===f||"DELETE"===f||"PATCH"===f)){g.type="POST",e.emulateJSON&&(g.data._method=f);var h=e.beforeSend;e.beforeSend=function(a){if(a.setRequestHeader("X-HTTP-Method-Override",f),h)return h.apply(this,arguments)}}"GET"===g.type||e.emulateJSON||(g.processData=!1);var i=e.error;e.error=function(a,b,c){e.textStatus=b,e.errorThrown=c,i&&i.call(e.context,a,b,c)};var j=e.xhr=b.ajax(c.extend(g,e));return d.trigger("request",d,j,e),j};var D={create:"POST",update:"PUT",patch:"PATCH","delete":"DELETE",read:"GET"};b.ajax=function(){return b.$.ajax.apply(b.$,arguments)};var E=b.Router=function(a){a||(a={}),a.routes&&(this.routes=a.routes),this._bindRoutes(),this.initialize.apply(this,arguments)},F=/\((.*?)\)/g,G=/(\(\?)?:\w+/g,H=/\*\w+/g,I=/[\-{}\[\]+?.,\\\^$|#\s]/g;c.extend(E.prototype,k,{initialize:function(){},route:function(a,d,e){c.isRegExp(a)||(a=this._routeToRegExp(a)),c.isFunction(d)&&(e=d,d=""),e||(e=this[d]);var f=this;return b.history.route(a,function(c){var g=f._extractParameters(a,c);f.execute(e,g,d)!==!1&&(f.trigger.apply(f,["route:"+d].concat(g)),f.trigger("route",d,g),b.history.trigger("route",f,d,g))}),this},execute:function(a,b,c){a&&a.apply(this,b)},navigate:function(a,c){return b.history.navigate(a,c),this},_bindRoutes:function(){if(this.routes){this.routes=c.result(this,"routes");for(var a,b=c.keys(this.routes);null!=(a=b.pop());)this.route(a,this.routes[a])}},_routeToRegExp:function(a){return a=a.replace(I,"\\$&").replace(F,"(?:$1)?").replace(G,function(a,b){return b?a:"([^/?]+)"}).replace(H,"([^?]*?)"),new RegExp("^"+a+"(?:\\?([\\s\\S]*))?$")},_extractParameters:function(a,b){var d=a.exec(b).slice(1);return c.map(d,function(a,b){return b===d.length-1?a||null:a?decodeURIComponent(a):null})}});var J=b.History=function(){this.handlers=[],this.checkUrl=c.bind(this.checkUrl,this),"undefined"!=typeof window&&(this.location=window.location,this.history=window.history)},K=/^[#\/]|\s+$/g,L=/^\/+|\/+$/g,M=/#.*$/;J.started=!1,c.extend(J.prototype,k,{interval:50,atRoot:function(){var a=this.location.pathname.replace(/[^\/]$/,"$&/");return a===this.root&&!this.getSearch()},matchRoot:function(){var a=this.decodeFragment(this.location.pathname),b=a.slice(0,this.root.length-1)+"/";return b===this.root},decodeFragment:function(a){return decodeURI(a.replace(/%25/g,"%2525"))},getSearch:function(){var a=this.location.href.replace(/#.*/,"").match(/\?.+/);return a?a[0]:""},getHash:function(a){var b=(a||this).location.href.match(/#(.*)$/);return b?b[1]:""},getPath:function(){var a=this.decodeFragment(this.location.pathname+this.getSearch()).slice(this.root.length-1);return"/"===a.charAt(0)?a.slice(1):a},getFragment:function(a){return null==a&&(a=this._usePushState||!this._wantsHashChange?this.getPath():this.getHash()),a.replace(K,"")},start:function(a){if(J.started)throw new Error("Backbone.history has already been started");if(J.started=!0,this.options=c.extend({root:"/"},this.options,a),this.root=this.options.root,this._wantsHashChange=this.options.hashChange!==!1,this._hasHashChange="onhashchange"in window&&(void 0===document.documentMode||document.documentMode>7),this._useHashChange=this._wantsHashChange&&this._hasHashChange,this._wantsPushState=!!this.options.pushState,this._hasPushState=!(!this.history||!this.history.pushState),this._usePushState=this._wantsPushState&&this._hasPushState,this.fragment=this.getFragment(),this.root=("/"+this.root+"/").replace(L,"/"),this._wantsHashChange&&this._wantsPushState){if(!this._hasPushState&&!this.atRoot()){var b=this.root.slice(0,-1)||"/";return this.location.replace(b+"#"+this.getPath()),!0}this._hasPushState&&this.atRoot()&&this.navigate(this.getHash(),{replace:!0})}if(!this._hasHashChange&&this._wantsHashChange&&!this._usePushState){this.iframe=document.createElement("iframe"),this.iframe.src="javascript:0",this.iframe.style.display="none",this.iframe.tabIndex=-1;var d=document.body,e=d.insertBefore(this.iframe,d.firstChild).contentWindow;e.document.open(),e.document.close(),e.location.hash="#"+this.fragment}var f=window.addEventListener||function(a,b){return attachEvent("on"+a,b)};if(this._usePushState?f("popstate",this.checkUrl,!1):this._useHashChange&&!this.iframe?f("hashchange",this.checkUrl,!1):this._wantsHashChange&&(this._checkUrlInterval=setInterval(this.checkUrl,this.interval)),!this.options.silent)return this.loadUrl()},stop:function(){var a=window.removeEventListener||function(a,b){return detachEvent("on"+a,b)};this._usePushState?a("popstate",this.checkUrl,!1):this._useHashChange&&!this.iframe&&a("hashchange",this.checkUrl,!1),this.iframe&&(document.body.removeChild(this.iframe),this.iframe=null),this._checkUrlInterval&&clearInterval(this._checkUrlInterval),J.started=!1},route:function(a,b){this.handlers.unshift({route:a,callback:b})},checkUrl:function(a){var b=this.getFragment();return b===this.fragment&&this.iframe&&(b=this.getHash(this.iframe.contentWindow)),b!==this.fragment&&(this.iframe&&this.navigate(b),void this.loadUrl())},loadUrl:function(a){return!!this.matchRoot()&&(a=this.fragment=this.getFragment(a),c.some(this.handlers,function(b){if(b.route.test(a))return b.callback(a),!0}))},navigate:function(a,b){if(!J.started)return!1;b&&b!==!0||(b={trigger:!!b}),a=this.getFragment(a||"");var c=this.root;""!==a&&"?"!==a.charAt(0)||(c=c.slice(0,-1)||"/");var d=c+a;if(a=this.decodeFragment(a.replace(M,"")),this.fragment!==a){if(this.fragment=a,this._usePushState)this.history[b.replace?"replaceState":"pushState"]({},document.title,d);else{if(!this._wantsHashChange)return this.location.assign(d);if(this._updateHash(this.location,a,b.replace),this.iframe&&a!==this.getHash(this.iframe.contentWindow)){var e=this.iframe.contentWindow;b.replace||(e.document.open(),e.document.close()),this._updateHash(e.location,a,b.replace)}}return b.trigger?this.loadUrl(a):void 0}},_updateHash:function(a,b,c){if(c){var d=a.href.replace(/(javascript:|#).*$/,"");a.replace(d+"#"+b)}else a.hash="#"+b}}),b.history=new J;var N=function(a,b){var d,e=this;return d=a&&c.has(a,"constructor")?a.constructor:function(){return e.apply(this,arguments)},c.extend(d,e,b),d.prototype=c.create(e.prototype,a),d.prototype.constructor=d,d.__super__=e.prototype,d};t.extend=v.extend=E.extend=A.extend=J.extend=N;var O=function(){throw new Error('A "url" property or function must be specified')},P=function(a,b){var c=b.error;b.error=function(d){c&&c.call(b.context,a,d,b),a.trigger("error",a,d,b)}};return b});