WordPress/wp-includes/js/backbone.min.js

(function(t){var e=typeof self=="object"&&self.self===self&&self||typeof global=="object"&&global.global===global&&global;if(typeof define==="function"&&define.amd){define(["underscore","jquery","exports"],function(i,r,n){e.Backbone=t(e,n,i,r)})}else if(typeof exports!=="undefined"){var i=require("underscore"),r;try{r=require("jquery")}catch(n){}t(e,exports,i,r)}else{e.Backbone=t(e,{},e._,e.jQuery||e.Zepto||e.ender||e.$)}})(function(t,e,i,r){var n=t.Backbone;var s=Array.prototype.slice;e.VERSION="1.3.3";e.$=r;e.noConflict=function(){t.Backbone=n;return this};e.emulateHTTP=false;e.emulateJSON=false;var a=function(t,e,r){switch(t){case 1:return function(){return i[e](this[r])};case 2:return function(t){return i[e](this[r],t)};case 3:return function(t,n){return i[e](this[r],o(t,this),n)};case 4:return function(t,n,s){return i[e](this[r],o(t,this),n,s)};default:return function(){var t=s.call(arguments);t.unshift(this[r]);return i[e].apply(i,t)}}};var h=function(t,e,r){i.each(e,function(e,n){if(i[n])t.prototype[n]=a(e,n,r)})};var o=function(t,e){if(i.isFunction(t))return t;if(i.isObject(t)&&!e._isModel(t))return l(t);if(i.isString(t))return function(e){return e.get(t)};return t};var l=function(t){var e=i.matches(t);return function(t){return e(t.attributes)}};var u=e.Events={};var c=/\s+/;var f=function(t,e,r,n,s){var a=0,h;if(r&&typeof r==="object"){if(n!==void 0&&"context"in s&&s.context===void 0)s.context=n;for(h=i.keys(r);a<h.length;a++){e=f(t,e,h[a],r[h[a]],s)}}else if(r&&c.test(r)){for(h=r.split(c);a<h.length;a++){e=t(e,h[a],n,s)}}else{e=t(e,r,n,s)}return e};u.on=function(t,e,i){return d(this,t,e,i)};var d=function(t,e,i,r,n){t._events=f(v,t._events||{},e,i,{context:r,ctx:t,listening:n});if(n){var s=t._listeners||(t._listeners={});s[n.id]=n}return t};u.listenTo=function(t,e,r){if(!t)return this;var n=t._listenId||(t._listenId=i.uniqueId("l"));var s=this._listeningTo||(this._listeningTo={});var a=s[n];if(!a){var 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v=c[d];if(r&&r!==v.callback&&r!==v.callback._callback||h&&h!==v.context){f.push(v)}else{a=v.listening;if(a&&--a.count===0){delete o[a.id];delete a.listeningTo[a.objId]}}}if(f.length){t[e]=f}else{delete t[e]}}return t};u.once=function(t,e,r){var n=f(p,{},t,e,i.bind(this.off,this));if(typeof t==="string"&&r==null)e=void 0;return this.on(n,e,r)};u.listenToOnce=function(t,e,r){var n=f(p,{},e,r,i.bind(this.stopListening,this,t));return this.listenTo(t,n)};var p=function(t,e,r,n){if(r){var s=t[e]=i.once(function(){n(e,s);r.apply(this,arguments)});s._callback=r}return t};u.trigger=function(t){if(!this._events)return this;var e=Math.max(0,arguments.length-1);var i=Array(e);for(var r=0;r<e;r++)i[r]=arguments[r+1];f(m,this._events,t,void 0,i);return this};var m=function(t,e,i,r){if(t){var n=t[e];var s=t.all;if(n&&s)s=s.slice();if(n)_(n,r);if(s)_(s,[e].concat(r))}return t};var _=function(t,e){var i,r=-1,n=t.length,s=e[0],a=e[1],h=e[2];switch(e.length){case 0:while(++r<n)(i=t[r]).callback.call(i.ctx);return;case 1:while(++r<n)(i=t[r]).callback.call(i.ctx,s);return;case 2:while(++r<n)(i=t[r]).callback.call(i.ctx,s,a);return;case 3:while(++r<n)(i=t[r]).callback.call(i.ctx,s,a,h);return;default:while(++r<n)(i=t[r]).callback.apply(i.ctx,e);return}};u.bind=u.on;u.unbind=u.off;i.extend(e,u);var y=e.Model=function(t,e){var r=t||{};e||(e={});this.cid=i.uniqueId(this.cidPrefix);this.attributes={};if(e.collection)this.collection=e.collection;if(e.parse)r=this.parse(r,e)||{};var n=i.result(this,"defaults");r=i.defaults(i.extend({},n,r),n);this.set(r,e);this.changed={};this.initialize.apply(this,arguments)};i.extend(y.prototype,u,{changed:null,validationError:null,idAttribute:"id",cidPrefix:"c",initialize:function(){},toJSON:function(t){return i.clone(this.attributes)},sync:function(){return e.sync.apply(this,arguments)},get:function(t){return this.attributes[t]},escape:function(t){return i.escape(this.get(t))},has:function(t){return this.get(t)!=null},matches:function(t){return!!i.iteratee(t,this)(this.attributes)},set:function(t,e,r){if(t==null)return this;var n;if(typeof t==="object"){n=t;r=e}else{(n={})[t]=e}r||(r={});if(!this._validate(n,r))return false;var s=r.unset;var a=r.silent;var h=[];var o=this._changing;this._changing=true;if(!o){this._previousAttributes=i.clone(this.attributes);this.changed={}}var l=this.attributes;var u=this.changed;var c=this._previousAttributes;for(var f in n){e=n[f];if(!i.isEqual(l[f],e))h.push(f);if(!i.isEqual(c[f],e)){u[f]=e}else{delete u[f]}s?delete l[f]:l[f]=e}if(this.idAttribute in n)this.id=this.get(this.idAttribute);if(!a){if(h.length)this._pending=r;for(var d=0;d<h.length;d++){this.trigger("change:"+h[d],this,l[h[d]],r)}}if(o)return this;if(!a){while(this._pending){r=this._pending;this._pending=false;this.trigger("change",this,r)}}this._pending=false;this._changing=false;return this},unset:function(t,e){return this.set(t,void 0,i.extend({},e,{unset:true}))},clear:function(t){var e={};for(var r in this.attributes)e[r]=void 0;return this.set(e,i.extend({},t,{unset:true}))},hasChanged:function(t){if(t==null)return!i.isEmpty(this.changed);return i.has(this.changed,t)},changedAttributes:function(t){if(!t)return this.hasChanged()?i.clone(this.changed):false;var e=this._changing?this._previousAttributes:this.attributes;var r={};for(var n in t){var s=t[n];if(i.isEqual(e[n],s))continue;r[n]=s}return i.size(r)?r:false},previous:function(t){if(t==null||!this._previousAttributes)return null;return this._previousAttributes[t]},previousAttributes:function(){return i.clone(this._previousAttributes)},fetch:function(t){t=i.extend({parse:true},t);var e=this;var r=t.success;t.success=function(i){var n=t.parse?e.parse(i,t):i;if(!e.set(n,t))return false;if(r)r.call(t.context,e,i,t);e.trigger("sync",e,i,t)};B(this,t);return this.sync("read",this,t)},save:function(t,e,r){var n;if(t==null||typeof t==="object"){n=t;r=e}else{(n={})[t]=e}r=i.extend({validate:true,parse:true},r);var s=r.wait;if(n&&!s){if(!this.set(n,r))return false}else if(!this._validate(n,r)){return false}var a=this;var h=r.success;var o=this.attributes;r.success=function(t){a.attributes=o;var e=r.parse?a.parse(t,r):t;if(s)e=i.extend({},n,e);if(e&&!a.set(e,r))return false;if(h)h.call(r.context,a,t,r);a.trigger("sync",a,t,r)};B(this,r);if(n&&s)this.attributes=i.extend({},o,n);var l=this.isNew()?"create":r.patch?"patch":"update";if(l==="patch"&&!r.attrs)r.attrs=n;var u=this.sync(l,this,r);this.attributes=o;return u},destroy:function(t){t=t?i.clone(t):{};var e=this;var r=t.success;var n=t.wait;var s=function(){e.stopListening();e.trigger("destroy",e,e.collection,t)};t.success=function(i){if(n)s();if(r)r.call(t.context,e,i,t);if(!e.isNew())e.trigger("sync",e,i,t)};var a=false;if(this.isNew()){i.defer(t.success)}else{B(this,t);a=this.sync("delete",this,t)}if(!n)s();return a},url:function(){var t=i.result(this,"urlRoot")||i.result(this.collection,"url")||F();if(this.isNew())return t;var e=this.get(this.idAttribute);return t.replace(/[^\/]$/,"$&/")+encodeURIComponent(e)},parse:function(t,e){return t},clone:function(){return new this.constructor(this.attributes)},isNew:function(){return!this.has(this.idAttribute)},isValid:function(t){return this._validate({},i.extend({},t,{validate:true}))},_validate:function(t,e){if(!e.validate||!this.validate)return true;t=i.extend({},this.attributes,t);var r=this.validationError=this.validate(t,e)||null;if(!r)return true;this.trigger("invalid",this,r,i.extend(e,{validationError:r}));return false}});var b={keys:1,values:1,pairs:1,invert:1,pick:0,omit:0,chain:1,isEmpty:1};h(y,b,"attributes");var x=e.Collection=function(t,e){e||(e={});if(e.model)this.model=e.model;if(e.comparator!==void 0)this.comparator=e.comparator;this._reset();this.initialize.apply(this,arguments);if(t)this.reset(t,i.extend({silent:true},e))};var w={add:true,remove:true,merge:true};var E={add:true,remove:false};var I=function(t,e,i){i=Math.min(Math.max(i,0),t.length);var r=Array(t.length-i);var n=e.length;var s;for(s=0;s<r.length;s++)r[s]=t[s+i];for(s=0;s<n;s++)t[s+i]=e[s];for(s=0;s<r.length;s++)t[s+n+i]=r[s]};i.extend(x.prototype,u,{model:y,initialize:function(){},toJSON:function(t){return this.map(function(e){return e.toJSON(t)})},sync:function(){return e.sync.apply(this,arguments)},add:function(t,e){return this.set(t,i.extend({merge:false},e,E))},remove:function(t,e){e=i.extend({},e);var r=!i.isArray(t);t=r?[t]:t.slice();var n=this._removeModels(t,e);if(!e.silent&&n.length){e.changes={added:[],merged:[],removed:n};this.trigger("update",this,e)}return r?n[0]:n},set:function(t,e){if(t==null)return;e=i.extend({},w,e);if(e.parse&&!this._isModel(t)){t=this.parse(t,e)||[]}var r=!i.isArray(t);t=r?[t]:t.slice();var n=e.at;if(n!=null)n=+n;if(n>this.length)n=this.length;if(n<0)n+=this.length+1;var s=[];var a=[];var h=[];var o=[];var l={};var u=e.add;var c=e.merge;var f=e.remove;var d=false;var v=this.comparator&&n==null&&e.sort!==false;var g=i.isString(this.comparator)?this.comparator:null;var p,m;for(m=0;m<t.length;m++){p=t[m];var _=this.get(p);if(_){if(c&&p!==_){var y=this._isModel(p)?p.attributes:p;if(e.parse)y=_.parse(y,e);_.set(y,e);h.push(_);if(v&&!d)d=_.hasChanged(g)}if(!l[_.cid]){l[_.cid]=true;s.push(_)}t[m]=_}else if(u){p=t[m]=this._prepareModel(p,e);if(p){a.push(p);this._addReference(p,e);l[p.cid]=true;s.push(p)}}}if(f){for(m=0;m<this.length;m++){p=this.models[m];if(!l[p.cid])o.push(p)}if(o.length)this._removeModels(o,e)}var b=false;var x=!v&&u&&f;if(s.length&&x){b=this.length!==s.length||i.some(this.models,function(t,e){return t!==s[e]});this.models.length=0;I(this.models,s,0);this.length=this.models.length}else if(a.length){if(v)d=true;I(this.models,a,n==null?this.length:n);this.length=this.models.length}if(d)this.sort({silent:true});if(!e.silent){for(m=0;m<a.length;m++){if(n!=null)e.index=n+m;p=a[m];p.trigger("add",p,this,e)}if(d||b)this.trigger("sort",this,e);if(a.length||o.length||h.length){e.changes={added:a,removed:o,merged:h};this.trigger("update",this,e)}}return r?t[0]:t},reset:function(t,e){e=e?i.clone(e):{};for(var r=0;r<this.models.length;r++){this._removeReference(this.models[r],e)}e.previousModels=this.models;this._reset();t=this.add(t,i.extend({silent:true},e));if(!e.silent)this.trigger("reset",this,e);return t},push:function(t,e){return this.add(t,i.extend({at:this.length},e))},pop:function(t){var e=this.at(this.length-1);return this.remove(e,t)},unshift:function(t,e){return this.add(t,i.extend({at:0},e))},shift:function(t){var e=this.at(0);return this.remove(e,t)},slice:function(){return s.apply(this.models,arguments)},get:function(t){if(t==null)return void 0;return this._byId[t]||this._byId[this.modelId(t.attributes||t)]||t.cid&&this._byId[t.cid]},has:function(t){return this.get(t)!=null},at:function(t){if(t<0)t+=this.length;return this.models[t]},where:function(t,e){return this[e?"find":"filter"](t)},findWhere:function(t){return this.where(t,true)},sort:function(t){var e=this.comparator;if(!e)throw new Error("Cannot sort a set without a comparator");t||(t={});var r=e.length;if(i.isFunction(e))e=i.bind(e,this);if(r===1||i.isString(e)){this.models=this.sortBy(e)}else{this.models.sort(e)}if(!t.silent)this.trigger("sort",this,t);return this},pluck:function(t){return this.map(t+"")},fetch:function(t){t=i.extend({parse:true},t);var e=t.success;var r=this;t.success=function(i){var n=t.reset?"reset":"set";r[n](i,t);if(e)e.call(t.context,r,i,t);r.trigger("sync",r,i,t)};B(this,t);return this.sync("read",this,t)},create:function(t,e){e=e?i.clone(e):{};var r=e.wait;t=this._prepareModel(t,e);if(!t)return false;if(!r)this.add(t,e);var n=this;var s=e.success;e.success=function(t,e,i){if(r)n.add(t,i);if(s)s.call(i.context,t,e,i)};t.save(null,e);return t},parse:function(t,e){return t},clone:function(){return new this.constructor(this.models,{model:this.model,comparator:this.comparator})},modelId:function(t){return t[this.model.prototype.idAttribute||"id"]},_reset:function(){this.length=0;this.models=[];this._byId={}},_prepareModel:function(t,e){if(this._isModel(t)){if(!t.collection)t.collection=this;return t}e=e?i.clone(e):{};e.collection=this;var r=new this.model(t,e);if(!r.validationError)return r;this.trigger("invalid",this,r.validationError,e);return false},_removeModels:function(t,e){var i=[];for(var r=0;r<t.length;r++){var n=this.get(t[r]);if(!n)continue;var s=this.indexOf(n);this.models.splice(s,1);this.length--;delete this._byId[n.cid];var a=this.modelId(n.attributes);if(a!=null)delete this._byId[a];if(!e.silent){e.index=s;n.trigger("remove",n,this,e)}i.push(n);this._removeReference(n,e)}return i},_isModel:function(t){return t instanceof y},_addReference:function(t,e){this._byId[t.cid]=t;var i=this.modelId(t.attributes);if(i!=null)this._byId[i]=t;t.on("all",this._onModelEvent,this)},_removeReference:function(t,e){delete this._byId[t.cid];var i=this.modelId(t.attributes);if(i!=null)delete this._byId[i];if(this===t.collection)delete t.collection;t.off("all",this._onModelEvent,this)},_onModelEvent:function(t,e,i,r){if(e){if((t==="add"||t==="remove")&&i!==this)return;if(t==="destroy")this.remove(e,r);if(t==="change"){var n=this.modelId(e.previousAttributes());var s=this.modelId(e.attributes);if(n!==s){if(n!=null)delete this._byId[n];if(s!=null)this._byId[s]=e}}}this.trigger.apply(this,arguments)}});var S={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(x,S,"models");var k=e.View=function(t){this.cid=i.uniqueId("view");i.extend(this,i.pick(t,P));this._ensureElement();this.initialize.apply(this,arguments)};var T=/^(\S+)\s*(.*)$/;var P=["model","collection","el","id","attributes","className","tagName","events"];i.extend(k.prototype,u,{tagName:"div",$:function(t){return this.$el.find(t)},initialize:function(){},render:function(){return this},remove:function(){this._removeElement();this.stopListening();return this},_removeElement:function(){this.$el.remove()},setElement:function(t){this.undelegateEvents();this._setElement(t);this.delegateEvents();return this},_setElement:function(t){this.$el=t instanceof e.$?t:e.$(t);this.el=this.$el[0]},delegateEvents:function(t){t||(t=i.result(this,"events"));if(!t)return this;this.undelegateEvents();for(var e in t){var r=t[e];if(!i.isFunction(r))r=this[r];if(!r)continue;var n=e.match(T);this.delegate(n[1],n[2],i.bind(r,this))}return this},delegate:function(t,e,i){this.$el.on(t+".delegateEvents"+this.cid,e,i);return this},undelegateEvents:function(){if(this.$el)this.$el.off(".delegateEvents"+this.cid);return this},undelegate:function(t,e,i){this.$el.off(t+".delegateEvents"+this.cid,e,i);return this},_createElement:function(t){return document.createElement(t)},_ensureElement:function(){if(!this.el){var t=i.extend({},i.result(this,"attributes"));if(this.id)t.id=i.result(this,"id");if(this.className)t["class"]=i.result(this,"className");this.setElement(this._createElement(i.result(this,"tagName")));this._setAttributes(t)}else{this.setElement(i.result(this,"el"))}},_setAttributes:function(t){this.$el.attr(t)}});e.sync=function(t,r,n){var s=H[t];i.defaults(n||(n={}),{emulateHTTP:e.emulateHTTP,emulateJSON:e.emulateJSON});var a={type:s,dataType:"json"};if(!n.url){a.url=i.result(r,"url")||F()}if(n.data==null&&r&&(t==="create"||t==="update"||t==="patch")){a.contentType="application/json";a.data=JSON.stringify(n.attrs||r.toJSON(n))}if(n.emulateJSON){a.contentType="application/x-www-form-urlencoded";a.data=a.data?{model:a.data}:{}}if(n.emulateHTTP&&(s==="PUT"||s==="DELETE"||s==="PATCH")){a.type="POST";if(n.emulateJSON)a.data._method=s;var h=n.beforeSend;n.beforeSend=function(t){t.setRequestHeader("X-HTTP-Method-Override",s);if(h)return h.apply(this,arguments)}}if(a.type!=="GET"&&!n.emulateJSON){a.processData=false}var o=n.error;n.error=function(t,e,i){n.textStatus=e;n.errorThrown=i;if(o)o.call(n.context,t,e,i)};var l=n.xhr=e.ajax(i.extend(a,n));r.trigger("request",r,l,n);return l};var H={create:"POST",update:"PUT",patch:"PATCH","delete":"DELETE",read:"GET"};e.ajax=function(){return e.$.ajax.apply(e.$,arguments)};var $=e.Router=function(t){t||(t={});if(t.routes)this.routes=t.routes;this._bindRoutes();this.initialize.apply(this,arguments)};var A=/\((.*?)\)/g;var C=/(\(\?)?:\w+/g;var R=/\*\w+/g;var j=/[\-{}\[\]+?.,\\\^$|#\s]/g;i.extend($.prototype,u,{initialize:function(){},route:function(t,r,n){if(!i.isRegExp(t))t=this._routeToRegExp(t);if(i.isFunction(r)){n=r;r=""}if(!n)n=this[r];var s=this;e.history.route(t,function(i){var a=s._extractParameters(t,i);if(s.execute(n,a,r)!==false){s.trigger.apply(s,["route:"+r].concat(a));s.trigger("route",r,a);e.history.trigger("route",s,r,a)}});return this},execute:function(t,e,i){if(t)t.apply(this,e)},navigate:function(t,i){e.history.navigate(t,i);return this},_bindRoutes:function(){if(!this.routes)return;this.routes=i.result(this,"routes");var t,e=i.keys(this.routes);while((t=e.pop())!=null){this.route(t,this.routes[t])}},_routeToRegExp:function(t){t=t.replace(j,"\\$&").replace(A,"(?:$1)?").replace(C,function(t,e){return e?t:"([^/?]+)"}).replace(R,"([^?]*?)");return new RegExp("^"+t+"(?:\\?([\\s\\S]*))?$")},_extractParameters:function(t,e){var r=t.exec(e).slice(1);return i.map(r,function(t,e){if(e===r.length-1)return t||null;return t?decodeURIComponent(t):null})}});var N=e.History=function(){this.handlers=[];this.checkUrl=i.bind(this.checkUrl,this);if(typeof window!=="undefined"){this.location=window.location;this.history=window.history}};var M=/^[#\/]|\s+$/g;var O=/^\/+|\/+$/g;var U=/#.*$/;N.started=false;i.extend(N.prototype,u,{interval:50,atRoot:function(){var t=this.location.pathname.replace(/[^\/]$/,"$&/");return 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