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

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!function(a,b){if("function"==typeof define&&define.amd)define(["underscore","jquery","exports"],function(c,d,e){a.Backbone=b(a,e,c,d)});else if("undefined"!=typeof exports){var c=require("underscore");b(a,exports,c)}else a.Backbone=b(a,{},a._,a.jQuery||a.Zepto||a.ender||a.$)}(this,function(a,b,c,d){{var e=a.Backbone,f=[],g=(f.push,f.slice);f.splice}b.VERSION="1.1.2",b.$=d,b.noConflict=function(){return a.Backbone=e,this},b.emulateHTTP=!1,b.emulateJSON=!1;var h=b.Events={on:function(a,b,c){if(!j(this,"on",a,[b,c])||!b)return this;this._events||(this._events={});var d=this._events[a]||(this._events[a]=[]);return d.push({callback:b,context:c,ctx:c||this}),this},once:function(a,b,d){if(!j(this,"once",a,[b,d])||!b)return this;var e=this,f=c.once(function(){e.off(a,f),b.apply(this,arguments)});return f._callback=b,this.on(a,f,d)},off:function(a,b,d){var e,f,g,h,i,k,l,m;if(!this._events||!j(this,"off",a,[b,d]))return this;if(!a&&!b&&!d)return this._events=void 0,this;for(h=a?[a]:c.keys(this._events),i=0,k=h.length;k>i;i++)if(a=h[i],g=this._events[a]){if(this._events[a]=e=[],b||d)for(l=0,m=g.length;m>l;l++)f=g[l],(b&&b!==f.callback&&b!==f.callback._callback||d&&d!==f.context)&&e.push(f);e.length||delete this._events[a]}return this},trigger:function(a){if(!this._events)return this;var b=g.call(arguments,1);if(!j(this,"trigger",a,b))return this;var c=this._events[a],d=this._events.all;return c&&k(c,b),d&&k(d,arguments),this},stopListening:function(a,b,d){var e=this._listeningTo;if(!e)return this;var f=!b&&!d;d||"object"!=typeof b||(d=this),a&&((e={})[a._listenId]=a);for(var g in e)a=e[g],a.off(b,d,this),(f||c.isEmpty(a._events))&&delete this._listeningTo[g];return this}},i=/\s+/,j=function(a,b,c,d){if(!c)return!0;if("object"==typeof c){for(var e in c)a[b].apply(a,[e,c[e]].concat(d));return!1}if(i.test(c)){for(var f=c.split(i),g=0,h=f.length;h>g;g++)a[b].apply(a,[f[g]].concat(d));return!1}return!0},k=function(a,b){var c,d=-1,e=a.length,f=b[0],g=b[1],h=b[2];switch(b.length){case 0:for(;++d<e;)(c=a[d]).callback.call(c.ctx);return;case 1:for(;++d<e;)(c=a[d]).callback.call(c.ctx,f);return;case 2:for(;++d<e;)(c=a[d]).callback.call(c.ctx,f,g);return;case 3:for(;++d<e;)(c=a[d]).callback.call(c.ctx,f,g,h);return;default:for(;++d<e;)(c=a[d]).callback.apply(c.ctx,b);return}},l={listenTo:"on",listenToOnce:"once"};c.each(l,function(a,b){h[b]=function(b,d,e){var f=this._listeningTo||(this._listeningTo={}),g=b._listenId||(b._listenId=c.uniqueId("l"));return f[g]=b,e||"object"!=typeof d||(e=this),b[a](d,e,this),this}}),h.bind=h.on,h.unbind=h.off,c.extend(b,h);var m=b.Model=function(a,b){var d=a||{};b||(b={}),this.cid=c.uniqueId("c"),this.attributes={},b.collection&&(this.collection=b.collection),b.parse&&(d=this.parse(d,b)||{}),d=c.defaults({},d,c.result(this,"defaults")),this.set(d,b),this.changed={},this.initialize.apply(this,arguments)};c.extend(m.prototype,h,{changed:null,validationError:null,idAttribute:"id",initialize:function(){},toJSON:function(){return c.clone(this.attributes)},sync:function(){return b.sync.apply(this,arguments)},get:function(a){return this.attributes[a]},escape:function(a){return c.escape(this.get(a))},has:function(a){return null!=this.get(a)},set:function(a,b,d){var e,f,g,h,i,j,k,l;if(null==a)return this;if("object"==typeof a?(f=a,d=b):(f={})[a]=b,d||(d={}),!this._validate(f,d))return!1;g=d.unset,i=d.silent,h=[],j=this._changing,this._changing=!0,j||(this._previousAttributes=c.clone(this.attributes),this.changed={}),l=this.attributes,k=this._previousAttributes,this.idAttribute in f&&(this.id=f[this.idAttribute]);for(e in f)b=f[e],c.isEqual(l[e],b)||h.push(e),c.isEqual(k[e],b)?delete this.changed[e]:this.changed[e]=b,g?delete l[e]:l[e]=b;if(!i){h.length&&(this._pending=d);for(var m=0,n=h.length;n>m;m++)this.trigger("change:"+h[m],this,l[h[m]],d)}if(j)return this;if(!i)for(;this._pending;)d=this._pending,this._pending=!1,this.trigger("change",this,d);return this._pending=!1,this._changing=!1,this},unset:function(a,b){return this.set(a,void 0,c.extend({},b,{unset:!0}))},clear:function(a){var b={};for(var d in this.attri