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38 lines
16 KiB
JavaScript
38 lines
16 KiB
JavaScript
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// Backbone.js 0.9.1
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// (c) 2010-2012 Jeremy Ashkenas, DocumentCloud Inc.
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// Backbone may be freely distributed under the MIT license.
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// For all details and documentation:
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// http://backbonejs.org
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(function(){var i=this,r=i.Backbone,s=Array.prototype.slice,t=Array.prototype.splice,g;g="undefined"!==typeof exports?exports:i.Backbone={};g.VERSION="0.9.1";var f=i._;!f&&"undefined"!==typeof require&&(f=require("underscore"));var h=i.jQuery||i.Zepto||i.ender;g.setDomLibrary=function(a){h=a};g.noConflict=function(){i.Backbone=r;return this};g.emulateHTTP=!1;g.emulateJSON=!1;g.Events={on:function(a,b,c){for(var d,a=a.split(/\s+/),e=this._callbacks||(this._callbacks={});d=a.shift();){d=e[d]||(e[d]=
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{});var f=d.tail||(d.tail=d.next={});f.callback=b;f.context=c;d.tail=f.next={}}return this},off:function(a,b,c){var d,e,f;if(a){if(e=this._callbacks)for(a=a.split(/\s+/);d=a.shift();)if(f=e[d],delete e[d],b&&f)for(;(f=f.next)&&f.next;)if(!(f.callback===b&&(!c||f.context===c)))this.on(d,f.callback,f.context)}else delete this._callbacks;return this},trigger:function(a){var b,c,d,e;if(!(d=this._callbacks))return this;e=d.all;for((a=a.split(/\s+/)).push(null);b=a.shift();)e&&a.push({next:e.next,tail:e.tail,
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event:b}),(c=d[b])&&a.push({next:c.next,tail:c.tail});for(e=s.call(arguments,1);c=a.pop();){b=c.tail;for(d=c.event?[c.event].concat(e):e;(c=c.next)!==b;)c.callback.apply(c.context||this,d)}return this}};g.Events.bind=g.Events.on;g.Events.unbind=g.Events.off;g.Model=function(a,b){var c;a||(a={});b&&b.parse&&(a=this.parse(a));if(c=j(this,"defaults"))a=f.extend({},c,a);b&&b.collection&&(this.collection=b.collection);this.attributes={};this._escapedAttributes={};this.cid=f.uniqueId("c");if(!this.set(a,
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{silent:!0}))throw Error("Can't create an invalid model");delete this._changed;this._previousAttributes=f.clone(this.attributes);this.initialize.apply(this,arguments)};f.extend(g.Model.prototype,g.Events,{idAttribute:"id",initialize:function(){},toJSON:function(){return f.clone(this.attributes)},get:function(a){return this.attributes[a]},escape:function(a){var b;if(b=this._escapedAttributes[a])return b;b=this.attributes[a];return this._escapedAttributes[a]=f.escape(null==b?"":""+b)},has:function(a){return null!=
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this.attributes[a]},set:function(a,b,c){var d,e;f.isObject(a)||null==a?(d=a,c=b):(d={},d[a]=b);c||(c={});if(!d)return this;d instanceof g.Model&&(d=d.attributes);if(c.unset)for(e in d)d[e]=void 0;if(!this._validate(d,c))return!1;this.idAttribute in d&&(this.id=d[this.idAttribute]);var b=this.attributes,k=this._escapedAttributes,n=this._previousAttributes||{},h=this._setting;this._changed||(this._changed={});this._setting=!0;for(e in d)if(a=d[e],f.isEqual(b[e],a)||delete k[e],c.unset?delete b[e]:b[e]=
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a,this._changing&&!f.isEqual(this._changed[e],a)&&(this.trigger("change:"+e,this,a,c),this._moreChanges=!0),delete this._changed[e],!f.isEqual(n[e],a)||f.has(b,e)!=f.has(n,e))this._changed[e]=a;h||(!c.silent&&this.hasChanged()&&this.change(c),this._setting=!1);return this},unset:function(a,b){(b||(b={})).unset=!0;return this.set(a,null,b)},clear:function(a){(a||(a={})).unset=!0;return this.set(f.clone(this.attributes),a)},fetch:function(a){var a=a?f.clone(a):{},b=this,c=a.success;a.success=function(d,
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e,f){if(!b.set(b.parse(d,f),a))return!1;c&&c(b,d)};a.error=g.wrapError(a.error,b,a);return(this.sync||g.sync).call(this,"read",this,a)},save:function(a,b,c){var d,e;f.isObject(a)||null==a?(d=a,c=b):(d={},d[a]=b);c=c?f.clone(c):{};c.wait&&(e=f.clone(this.attributes));a=f.extend({},c,{silent:!0});if(d&&!this.set(d,c.wait?a:c))return!1;var k=this,h=c.success;c.success=function(a,b,e){b=k.parse(a,e);c.wait&&(b=f.extend(d||{},b));if(!k.set(b,c))return!1;h?h(k,a):k.trigger("sync",k,a,c)};c.error=g.wrapError(c.error,
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k,c);b=this.isNew()?"create":"update";b=(this.sync||g.sync).call(this,b,this,c);c.wait&&this.set(e,a);return b},destroy:function(a){var a=a?f.clone(a):{},b=this,c=a.success,d=function(){b.trigger("destroy",b,b.collection,a)};if(this.isNew())return d();a.success=function(e){a.wait&&d();c?c(b,e):b.trigger("sync",b,e,a)};a.error=g.wrapError(a.error,b,a);var e=(this.sync||g.sync).call(this,"delete",this,a);a.wait||d();return e},url:function(){var a=j(this.collection,"url")||j(this,"urlRoot")||o();return this.isNew()?
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a:a+("/"==a.charAt(a.length-1)?"":"/")+encodeURIComponent(this.id)},parse:function(a){return a},clone:function(){return new this.constructor(this.attributes)},isNew:function(){return null==this.id},change:function(a){if(this._changing||!this.hasChanged())return this;this._moreChanges=this._changing=!0;for(var b in this._changed)this.trigger("change:"+b,this,this._changed[b],a);for(;this._moreChanges;)this._moreChanges=!1,this.trigger("change",this,a);this._previousAttributes=f.clone(this.attributes);
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delete this._changed;this._changing=!1;return this},hasChanged:function(a){return!arguments.length?!f.isEmpty(this._changed):this._changed&&f.has(this._changed,a)},changedAttributes:function(a){if(!a)return this.hasChanged()?f.clone(this._changed):!1;var b,c=!1,d=this._previousAttributes,e;for(e in a)if(!f.isEqual(d[e],b=a[e]))(c||(c={}))[e]=b;return c},previous:function(a){return!arguments.length||!this._previousAttributes?null:this._previousAttributes[a]},previousAttributes:function(){return f.clone(this._previousAttributes)},
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isValid:function(){return!this.validate(this.attributes)},_validate:function(a,b){if(b.silent||!this.validate)return!0;var a=f.extend({},this.attributes,a),c=this.validate(a,b);if(!c)return!0;b&&b.error?b.error(this,c,b):this.trigger("error",this,c,b);return!1}});g.Collection=function(a,b){b||(b={});b.comparator&&(this.comparator=b.comparator);this._reset();this.initialize.apply(this,arguments);a&&this.reset(a,{silent:!0,parse:b.parse})};f.extend(g.Collection.prototype,g.Events,{model:g.Model,initialize:function(){},
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toJSON:function(){return this.map(function(a){return a.toJSON()})},add:function(a,b){var c,d,e,g,h,i={},j={};b||(b={});a=f.isArray(a)?a.slice():[a];for(c=0,d=a.length;c<d;c++){if(!(e=a[c]=this._prepareModel(a[c],b)))throw Error("Can't add an invalid model to a collection");if(i[g=e.cid]||this._byCid[g]||null!=(h=e.id)&&(j[h]||this._byId[h]))throw Error("Can't add the same model to a collection twice");i[g]=j[h]=e}for(c=0;c<d;c++)(e=a[c]).on("all",this._onModelEvent,this),this._byCid[e.cid]=e,null!=
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e.id&&(this._byId[e.id]=e);this.length+=d;t.apply(this.models,[null!=b.at?b.at:this.models.length,0].concat(a));this.comparator&&this.sort({silent:!0});if(b.silent)return this;for(c=0,d=this.models.length;c<d;c++)if(i[(e=this.models[c]).cid])b.index=c,e.trigger("add",e,this,b);return this},remove:function(a,b){var c,d,e,g;b||(b={});a=f.isArray(a)?a.slice():[a];for(c=0,d=a.length;c<d;c++)if(g=this.getByCid(a[c])||this.get(a[c]))delete this._byId[g.id],delete this._byCid[g.cid],e=this.indexOf(g),this.models.splice(e,
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1),this.length--,b.silent||(b.index=e,g.trigger("remove",g,this,b)),this._removeReference(g);return this},get:function(a){return null==a?null:this._byId[null!=a.id?a.id:a]},getByCid:function(a){return a&&this._byCid[a.cid||a]},at:function(a){return this.models[a]},sort:function(a){a||(a={});if(!this.comparator)throw Error("Cannot sort a set without a comparator");var b=f.bind(this.comparator,this);1==this.comparator.length?this.models=this.sortBy(b):this.models.sort(b);a.silent||this.trigger("reset",
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this,a);return this},pluck:function(a){return f.map(this.models,function(b){return b.get(a)})},reset:function(a,b){a||(a=[]);b||(b={});for(var c=0,d=this.models.length;c<d;c++)this._removeReference(this.models[c]);this._reset();this.add(a,{silent:!0,parse:b.parse});b.silent||this.trigger("reset",this,b);return this},fetch:function(a){a=a?f.clone(a):{};void 0===a.parse&&(a.parse=!0);var b=this,c=a.success;a.success=function(d,e,f){b[a.add?"add":"reset"](b.parse(d,f),a);c&&c(b,d)};a.error=g.wrapError(a.error,
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b,a);return(this.sync||g.sync).call(this,"read",this,a)},create:function(a,b){var c=this,b=b?f.clone(b):{},a=this._prepareModel(a,b);if(!a)return!1;b.wait||c.add(a,b);var d=b.success;b.success=function(e,f){b.wait&&c.add(e,b);d?d(e,f):e.trigger("sync",a,f,b)};a.save(null,b);return a},parse:function(a){return a},chain:function(){return f(this.models).chain()},_reset:function(){this.length=0;this.models=[];this._byId={};this._byCid={}},_prepareModel:function(a,b){a instanceof g.Model?a.collection||
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(a.collection=this):(b.collection=this,a=new this.model(a,b),a._validate(a.attributes,b)||(a=!1));return a},_removeReference:function(a){this==a.collection&&delete a.collection;a.off("all",this._onModelEvent,this)},_onModelEvent:function(a,b,c,d){("add"==a||"remove"==a)&&c!=this||("destroy"==a&&this.remove(b,d),b&&a==="change:"+b.idAttribute&&(delete this._byId[b.previous(b.idAttribute)],this._byId[b.id]=b),this.trigger.apply(this,arguments))}});f.each("forEach,each,map,reduce,reduceRight,find,detect,filter,select,reject,every,all,some,any,include,contains,invoke,max,min,sortBy,sortedIndex,toArray,size,first,initial,rest,last,without,indexOf,shuffle,lastIndexOf,isEmpty,groupBy".split(","),
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function(a){g.Collection.prototype[a]=function(){return f[a].apply(f,[this.models].concat(f.toArray(arguments)))}});g.Router=function(a){a||(a={});a.routes&&(this.routes=a.routes);this._bindRoutes();this.initialize.apply(this,arguments)};var u=/:\w+/g,v=/\*\w+/g,w=/[-[\]{}()+?.,\\^$|#\s]/g;f.extend(g.Router.prototype,g.Events,{initialize:function(){},route:function(a,b,c){g.history||(g.history=new g.History);f.isRegExp(a)||(a=this._routeToRegExp(a));c||(c=this[b]);g.history.route(a,f.bind(function(d){d=
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this._extractParameters(a,d);c&&c.apply(this,d);this.trigger.apply(this,["route:"+b].concat(d));g.history.trigger("route",this,b,d)},this));return this},navigate:function(a,b){g.history.navigate(a,b)},_bindRoutes:function(){if(this.routes){var a=[],b;for(b in this.routes)a.unshift([b,this.routes[b]]);b=0;for(var c=a.length;b<c;b++)this.route(a[b][0],a[b][1],this[a[b][1]])}},_routeToRegExp:function(a){a=a.replace(w,"\\$&").replace(u,"([^/]+)").replace(v,"(.*?)");return RegExp("^"+a+"$")},_extractParameters:function(a,
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b){return a.exec(b).slice(1)}});g.History=function(){this.handlers=[];f.bindAll(this,"checkUrl")};var m=/^[#\/]/,x=/msie [\w.]+/,l=!1;f.extend(g.History.prototype,g.Events,{interval:50,getFragment:function(a,b){if(null==a)if(this._hasPushState||b){var a=window.location.pathname,c=window.location.search;c&&(a+=c)}else a=window.location.hash;a=decodeURIComponent(a);a.indexOf(this.options.root)||(a=a.substr(this.options.root.length));return a.replace(m,"")},start:function(a){if(l)throw Error("Backbone.history has already been started");
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this.options=f.extend({},{root:"/"},this.options,a);this._wantsHashChange=!1!==this.options.hashChange;this._wantsPushState=!!this.options.pushState;this._hasPushState=!(!this.options.pushState||!window.history||!window.history.pushState);var a=this.getFragment(),b=document.documentMode;if(b=x.exec(navigator.userAgent.toLowerCase())&&(!b||7>=b))this.iframe=h('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo("body")[0].contentWindow,this.navigate(a);this._hasPushState?h(window).bind("popstate",
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this.checkUrl):this._wantsHashChange&&"onhashchange"in window&&!b?h(window).bind("hashchange",this.checkUrl):this._wantsHashChange&&(this._checkUrlInterval=setInterval(this.checkUrl,this.interval));this.fragment=a;l=!0;a=window.location;b=a.pathname==this.options.root;if(this._wantsHashChange&&this._wantsPushState&&!this._hasPushState&&!b)return this.fragment=this.getFragment(null,!0),window.location.replace(this.options.root+"#"+this.fragment),!0;this._wantsPushState&&this._hasPushState&&b&&a.hash&&
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(this.fragment=a.hash.replace(m,""),window.history.replaceState({},document.title,a.protocol+"//"+a.host+this.options.root+this.fragment));if(!this.options.silent)return this.loadUrl()},stop:function(){h(window).unbind("popstate",this.checkUrl).unbind("hashchange",this.checkUrl);clearInterval(this._checkUrlInterval);l=!1},route:function(a,b){this.handlers.unshift({route:a,callback:b})},checkUrl:function(){var a=this.getFragment();a==this.fragment&&this.iframe&&(a=this.getFragment(this.iframe.location.hash));
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if(a==this.fragment||a==decodeURIComponent(this.fragment))return!1;this.iframe&&this.navigate(a);this.loadUrl()||this.loadUrl(window.location.hash)},loadUrl:function(a){var b=this.fragment=this.getFragment(a);return f.any(this.handlers,function(a){if(a.route.test(b))return a.callback(b),!0})},navigate:function(a,b){if(!l)return!1;if(!b||!0===b)b={trigger:b};var c=(a||"").replace(m,"");this.fragment==c||this.fragment==decodeURIComponent(c)||(this._hasPushState?(0!=c.indexOf(this.options.root)&&(c=
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this.options.root+c),this.fragment=c,window.history[b.replace?"replaceState":"pushState"]({},document.title,c)):this._wantsHashChange?(this.fragment=c,this._updateHash(window.location,c,b.replace),this.iframe&&c!=this.getFragment(this.iframe.location.hash)&&(b.replace||this.iframe.document.open().close(),this._updateHash(this.iframe.location,c,b.replace))):window.location.assign(this.options.root+a),b.trigger&&this.loadUrl(a))},_updateHash:function(a,b,c){c?a.replace(a.toString().replace(/(javascript:|#).*$/,
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"")+"#"+b):a.hash=b}});g.View=function(a){this.cid=f.uniqueId("view");this._configure(a||{});this._ensureElement();this.initialize.apply(this,arguments);this.delegateEvents()};var y=/^(\S+)\s*(.*)$/,p="model,collection,el,id,attributes,className,tagName".split(",");f.extend(g.View.prototype,g.Events,{tagName:"div",$:function(a){return this.$el.find(a)},initialize:function(){},render:function(){return this},remove:function(){this.$el.remove();return this},make:function(a,b,c){a=document.createElement(a);
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b&&h(a).attr(b);c&&h(a).html(c);return a},setElement:function(a,b){this.$el=h(a);this.el=this.$el[0];!1!==b&&this.delegateEvents();return this},delegateEvents:function(a){if(a||(a=j(this,"events"))){this.undelegateEvents();for(var b in a){var c=a[b];f.isFunction(c)||(c=this[a[b]]);if(!c)throw Error('Event "'+a[b]+'" does not exist');var d=b.match(y),e=d[1],d=d[2],c=f.bind(c,this),e=e+(".delegateEvents"+this.cid);""===d?this.$el.bind(e,c):this.$el.delegate(d,e,c)}}},undelegateEvents:function(){this.$el.unbind(".delegateEvents"+
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this.cid)},_configure:function(a){this.options&&(a=f.extend({},this.options,a));for(var b=0,c=p.length;b<c;b++){var d=p[b];a[d]&&(this[d]=a[d])}this.options=a},_ensureElement:function(){if(this.el)this.setElement(this.el,!1);else{var a=j(this,"attributes")||{};this.id&&(a.id=this.id);this.className&&(a["class"]=this.className);this.setElement(this.make(this.tagName,a),!1)}}});g.Model.extend=g.Collection.extend=g.Router.extend=g.View.extend=function(a,b){var c=z(this,a,b);c.extend=this.extend;return c};
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var A={create:"POST",update:"PUT","delete":"DELETE",read:"GET"};g.sync=function(a,b,c){var d=A[a],e={type:d,dataType:"json"};c.url||(e.url=j(b,"url")||o());if(!c.data&&b&&("create"==a||"update"==a))e.contentType="application/json",e.data=JSON.stringify(b.toJSON());g.emulateJSON&&(e.contentType="application/x-www-form-urlencoded",e.data=e.data?{model:e.data}:{});if(g.emulateHTTP&&("PUT"===d||"DELETE"===d))g.emulateJSON&&(e.data._method=d),e.type="POST",e.beforeSend=function(a){a.setRequestHeader("X-HTTP-Method-Override",
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d)};"GET"!==e.type&&!g.emulateJSON&&(e.processData=!1);return h.ajax(f.extend(e,c))};g.wrapError=function(a,b,c){return function(d,e){e=d===b?e:d;a?a(b,e,c):b.trigger("error",b,e,c)}};var q=function(){},z=function(a,b,c){var d;d=b&&b.hasOwnProperty("constructor")?b.constructor:function(){a.apply(this,arguments)};f.extend(d,a);q.prototype=a.prototype;d.prototype=new q;b&&f.extend(d.prototype,b);c&&f.extend(d,c);d.prototype.constructor=d;d.__super__=a.prototype;return d},j=function(a,b){return!a||!a[b]?
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null:f.isFunction(a[b])?a[b]():a[b]},o=function(){throw Error('A "url" property or function must be specified');}}).call(this);
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