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add backbone.js v0.3.2
This commit is contained in:
Peter Dave Hello
+27
@@ -0,0 +1,27 @@
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// Backbone.js 0.3.2
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// (c) 2010 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://documentcloud.github.com/backbone
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(function(){var e;e=typeof exports!=="undefined"?exports:this.Backbone={};e.VERSION="0.3.2";var f=this._;if(!f&&typeof require!=="undefined")f=require("underscore")._;var h=this.jQuery;e.emulateHTTP=false;e.emulateJSON=false;e.Events={bind:function(a,b){this._callbacks||(this._callbacks={});(this._callbacks[a]||(this._callbacks[a]=[])).push(b);return this},unbind:function(a,b){var c;if(a){if(c=this._callbacks)if(b){c=c[a];if(!c)return this;for(var d=0,g=c.length;d<g;d++)if(b===c[d]){c.splice(d,1);
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break}}else c[a]=[]}else this._callbacks={};return this},trigger:function(a){var b,c,d,g;if(!(c=this._callbacks))return this;if(b=c[a]){d=0;for(g=b.length;d<g;d++)b[d].apply(this,Array.prototype.slice.call(arguments,1))}if(b=c.all){d=0;for(g=b.length;d<g;d++)b[d].apply(this,arguments)}return this}};e.Model=function(a,b){a||(a={});if(this.defaults)a=f.extend({},this.defaults,a);this.attributes={};this.cid=f.uniqueId("c");this.set(a,{silent:true});this._previousAttributes=f.clone(this.attributes);if(b&&
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b.collection)this.collection=b.collection;this.initialize(a,b)};f.extend(e.Model.prototype,e.Events,{_previousAttributes:null,_changed:false,initialize:function(){},toJSON:function(){return f.clone(this.attributes)},get:function(a){return this.attributes[a]},set:function(a,b){b||(b={});if(!a)return this;if(a.attributes)a=a.attributes;var c=this.attributes;if(!b.silent&&this.validate&&!this._performValidation(a,b))return false;if("id"in a)this.id=a.id;for(var d in a){var g=a[d];if(!f.isEqual(c[d],
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g)){c[d]=g;if(!b.silent){this._changed=true;this.trigger("change:"+d,this,g)}}}!b.silent&&this._changed&&this.change();return this},unset:function(a,b){b||(b={});var c={};c[a]=void 0;if(!b.silent&&this.validate&&!this._performValidation(c,b))return false;delete this.attributes[a];if(!b.silent){this._changed=true;this.trigger("change:"+a,this);this.change()}return this},clear:function(a){a||(a={});var b=this.attributes,c={};for(attr in b)c[attr]=void 0;if(!a.silent&&this.validate&&!this._performValidation(c,
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a))return false;this.attributes={};if(!a.silent){this._changed=true;for(attr in b)this.trigger("change:"+attr,this);this.change()}return this},fetch:function(a){a||(a={});var b=this,c=a.error&&f.bind(a.error,null,b);(this.sync||e.sync)("read",this,function(d){if(!b.set(b.parse(d),a))return false;a.success&&a.success(b,d)},c);return this},save:function(a,b){b||(b={});if(a&&!this.set(a,b))return false;var c=this,d=b.error&&f.bind(b.error,null,c),g=this.isNew()?"create":"update";(this.sync||e.sync)(g,
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this,function(i){if(!c.set(c.parse(i),b))return false;b.success&&b.success(c,i)},d);return this},destroy:function(a){a||(a={});var b=this,c=a.error&&f.bind(a.error,null,b);(this.sync||e.sync)("delete",this,function(d){b.collection&&b.collection.remove(b);a.success&&a.success(b,d)},c);return this},url:function(){var a=j(this.collection);if(this.isNew())return a;return a+(a.charAt(a.length-1)=="/"?"":"/")+this.id},parse:function(a){return a},clone:function(){return new this.constructor(this)},isNew:function(){return!this.id},
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change:function(){this.trigger("change",this);this._previousAttributes=f.clone(this.attributes);this._changed=false},hasChanged:function(a){if(a)return this._previousAttributes[a]!=this.attributes[a];return this._changed},changedAttributes:function(a){a||(a=this.attributes);var b=this._previousAttributes,c=false,d;for(d in a)if(!f.isEqual(b[d],a[d])){c=c||{};c[d]=a[d]}return c},previous:function(a){if(!a||!this._previousAttributes)return null;return this._previousAttributes[a]},previousAttributes:function(){return f.clone(this._previousAttributes)},
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_performValidation:function(a,b){var c=this.validate(a);if(c){b.error?b.error(this,c):this.trigger("error",this,c);return false}return true}});e.Collection=function(a,b){b||(b={});if(b.comparator){this.comparator=b.comparator;delete b.comparator}this._boundOnModelEvent=f.bind(this._onModelEvent,this);this._reset();a&&this.refresh(a,{silent:true});this.initialize(a,b)};f.extend(e.Collection.prototype,e.Events,{model:e.Model,initialize:function(){},toJSON:function(){return this.map(function(a){return a.toJSON()})},
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add:function(a,b){if(f.isArray(a))for(var c=0,d=a.length;c<d;c++)this._add(a[c],b);else this._add(a,b);return this},remove:function(a,b){if(f.isArray(a))for(var c=0,d=a.length;c<d;c++)this._remove(a[c],b);else this._remove(a,b);return this},get:function(a){if(a==null)return null;return this._byId[a.id!=null?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");
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this.models=this.sortBy(this.comparator);a.silent||this.trigger("refresh",this);return this},pluck:function(a){return f.map(this.models,function(b){return b.get(a)})},refresh:function(a,b){a||(a=[]);b||(b={});this._reset();this.add(a,{silent:true});b.silent||this.trigger("refresh",this);return this},fetch:function(a){a||(a={});var b=this,c=a.error&&f.bind(a.error,null,b);(this.sync||e.sync)("read",this,function(d){b.refresh(b.parse(d));a.success&&a.success(b,d)},c);return this},create:function(a,
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b){var c=this;b||(b={});if(a instanceof e.Model)a.collection=c;else a=new this.model(a,{collection:c});return a.save(null,{success:function(d,g){c.add(d);b.success&&b.success(d,g)},error:b.error})},parse:function(a){return a},chain:function(){return f(this.models).chain()},_reset:function(){this.length=0;this.models=[];this._byId={};this._byCid={}},_add:function(a,b){b||(b={});a instanceof e.Model||(a=new this.model(a,{collection:this}));var c=this.getByCid(a);if(c)throw Error(["Can't add the same model to a set twice",
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c.id]);this._byId[a.id]=a;this._byCid[a.cid]=a;a.collection=this;this.models.splice(this.comparator?this.sortedIndex(a,this.comparator):this.length,0,a);a.bind("all",this._boundOnModelEvent);this.length++;b.silent||a.trigger("add",a,this);return a},_remove:function(a,b){b||(b={});a=this.getByCid(a)||this.get(a);if(!a)return null;delete this._byId[a.id];delete this._byCid[a.cid];delete a.collection;this.models.splice(this.indexOf(a),1);this.length--;b.silent||a.trigger("remove",a,this);a.unbind("all",
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this._boundOnModelEvent);return a},_onModelEvent:function(a,b){if(a==="change:id"){delete this._byId[b.previous("id")];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","invoke","max","min","sortBy","sortedIndex","toArray","size","first","rest","last","without","indexOf","lastIndexOf","isEmpty"],function(a){e.Collection.prototype[a]=function(){return f[a].apply(f,
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[this.models].concat(f.toArray(arguments)))}});e.Controller=function(a){a||(a={});if(a.routes)this.routes=a.routes;this._bindRoutes();this.initialize(a)};var o=/:([\w\d]+)/g,p=/\*([\w\d]+)/g;f.extend(e.Controller.prototype,e.Events,{initialize:function(){},route:function(a,b,c){e.history||(e.history=new e.History);f.isRegExp(a)||(a=this._routeToRegExp(a));e.history.route(a,f.bind(function(d){d=this._extractParameters(a,d);c.apply(this,d);this.trigger.apply(this,["route:"+b].concat(d))},this))},saveLocation:function(a){e.history.saveLocation(a)},
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_bindRoutes:function(){if(this.routes)for(var a in this.routes){var b=this.routes[a];this.route(a,b,this[b])}},_routeToRegExp:function(a){a=a.replace(o,"([^/]*)").replace(p,"(.*?)");return RegExp("^"+a+"$")},_extractParameters:function(a,b){return a.exec(b).slice(1)}});e.History=function(){this.handlers=[];this.fragment=this.getFragment();f.bindAll(this,"checkUrl")};var k=/^#*/;f.extend(e.History.prototype,{interval:50,getFragment:function(a){return(a||window.location).hash.replace(k,"")},start:function(){var a=
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document.documentMode;if(a=h.browser.msie&&(!a||a<=7))this.iframe=h('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo("body")[0].contentWindow;"onhashchange"in window&&!a?h(window).bind("hashchange",this.checkUrl):setInterval(this.checkUrl,this.interval);return this.loadUrl()},route:function(a,b){this.handlers.push({route:a,callback:b})},checkUrl:function(){var a=this.getFragment();if(a==this.fragment&&this.iframe)a=this.getFragment(this.iframe.location);if(a==this.fragment||a==decodeURIComponent(this.fragment))return false;
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if(this.iframe)window.location.hash=this.iframe.location.hash=a;this.loadUrl()},loadUrl:function(){var a=this.fragment=this.getFragment();return f.any(this.handlers,function(b){if(b.route.test(a)){b.callback(a);return true}})},saveLocation:function(a){a=(a||"").replace(k,"");if(this.fragment!=a){window.location.hash=this.fragment=a;if(this.iframe&&a!=this.getFragment(this.iframe.location)){this.iframe.document.open().close();this.iframe.location.hash=a}}}});e.View=function(a){this._configure(a||{});
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this._ensureElement();this.delegateEvents();this.initialize(a)};var l=function(a){return h(a,this.el)},q=/^(\w+)\s*(.*)$/;f.extend(e.View.prototype,e.Events,{tagName:"div",$:l,jQuery:l,initialize:function(){},render:function(){return this},remove:function(){h(this.el).remove();return this},make:function(a,b,c){a=document.createElement(a);b&&h(a).attr(b);c&&h(a).html(c);return a},delegateEvents:function(a){if(a||(a=this.events)){h(this.el).unbind();for(var b in a){var c=a[b],d=b.match(q),g=d[1];d=
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d[2];c=f.bind(this[c],this);d===""?h(this.el).bind(g,c):h(this.el).delegate(d,g,c)}}},_configure:function(a){if(this.options)a=f.extend({},this.options,a);if(a.model)this.model=a.model;if(a.collection)this.collection=a.collection;if(a.el)this.el=a.el;if(a.id)this.id=a.id;if(a.className)this.className=a.className;if(a.tagName)this.tagName=a.tagName;this.options=a},_ensureElement:function(){if(!this.el){var a={};if(this.id)a.id=this.id;if(this.className)a.className=this.className;this.el=this.make(this.tagName,
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a)}}});var m=function(a,b){var c=r(this,a,b);c.extend=m;return c};e.Model.extend=e.Collection.extend=e.Controller.extend=e.View.extend=m;var s={create:"POST",update:"PUT","delete":"DELETE",read:"GET"};e.sync=function(a,b,c,d){var g=s[a];a=a==="create"||a==="update"?JSON.stringify(b.toJSON()):null;b={url:j(b),type:g,contentType:"application/json",data:a,dataType:"json",processData:false,success:c,error:d};if(e.emulateJSON){b.contentType="application/x-www-form-urlencoded";b.processData=true;b.data=
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a?{model:a}:{}}if(e.emulateHTTP)if(g==="PUT"||g==="DELETE"){if(e.emulateJSON)b.data._method=g;b.type="POST";b.beforeSend=function(i){i.setRequestHeader("X-HTTP-Method-Override",g)}}h.ajax(b)};var n=function(){},r=function(a,b,c){var d;d=b&&b.hasOwnProperty("constructor")?b.constructor:function(){return a.apply(this,arguments)};n.prototype=a.prototype;d.prototype=new n;b&&f.extend(d.prototype,b);c&&f.extend(d,c);d.prototype.constructor=d;d.__super__=a.prototype;return d},j=function(a){if(!(a&&a.url))throw Error("A 'url' property or function must be specified");
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return f.isFunction(a.url)?a.url():a.url}})();
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@@ -0,0 +1,984 @@
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// Backbone.js 0.3.2
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// (c) 2010 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://documentcloud.github.com/backbone
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(function(){
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// Initial Setup
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// -------------
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// The top-level namespace. All public Backbone classes and modules will
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// be attached to this. Exported for both CommonJS and the browser.
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var Backbone;
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if (typeof exports !== 'undefined') {
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Backbone = exports;
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} else {
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Backbone = this.Backbone = {};
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}
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// Current version of the library. Keep in sync with `package.json`.
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Backbone.VERSION = '0.3.2';
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// Require Underscore, if we're on the server, and it's not already present.
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var _ = this._;
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if (!_ && (typeof require !== 'undefined')) _ = require("underscore")._;
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// For Backbone's purposes, jQuery owns the `$` variable.
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var $ = this.jQuery;
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// Turn on `emulateHTTP` to use support legacy HTTP servers. Setting this option will
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// fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and set a
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// `X-Http-Method-Override` header.
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Backbone.emulateHTTP = false;
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// Turn on `emulateJSON` to support legacy servers that can't deal with direct
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// `application/json` requests ... will encode the body as
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// `application/x-www-form-urlencoded` instead and will send the model in a
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// form param named `model`.
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Backbone.emulateJSON = false;
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// Backbone.Events
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// -----------------
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// A module that can be mixed in to *any object* in order to provide it with
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// custom events. You may `bind` or `unbind` a callback function to an event;
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// `trigger`-ing an event fires all callbacks in succession.
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//
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// var object = {};
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// _.extend(object, Backbone.Events);
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// object.bind('expand', function(){ alert('expanded'); });
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// object.trigger('expand');
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//
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Backbone.Events = {
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// Bind an event, specified by a string name, `ev`, to a `callback` function.
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// Passing `"all"` will bind the callback to all events fired.
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bind : function(ev, callback) {
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var calls = this._callbacks || (this._callbacks = {});
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var list = this._callbacks[ev] || (this._callbacks[ev] = []);
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list.push(callback);
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return this;
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},
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// Remove one or many callbacks. If `callback` is null, removes all
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// callbacks for the event. If `ev` is null, removes all bound callbacks
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// for all events.
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unbind : function(ev, callback) {
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var calls;
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if (!ev) {
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this._callbacks = {};
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} else if (calls = this._callbacks) {
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if (!callback) {
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calls[ev] = [];
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} else {
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var list = calls[ev];
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if (!list) return this;
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for (var i = 0, l = list.length; i < l; i++) {
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if (callback === list[i]) {
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list.splice(i, 1);
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break;
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}
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}
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}
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}
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return this;
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},
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// Trigger an event, firing all bound callbacks. Callbacks are passed the
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// same arguments as `trigger` is, apart from the event name.
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// Listening for `"all"` passes the true event name as the first argument.
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trigger : function(ev) {
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var list, calls, i, l;
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if (!(calls = this._callbacks)) return this;
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if (list = calls[ev]) {
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for (i = 0, l = list.length; i < l; i++) {
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list[i].apply(this, Array.prototype.slice.call(arguments, 1));
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}
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}
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if (list = calls['all']) {
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for (i = 0, l = list.length; i < l; i++) {
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list[i].apply(this, arguments);
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}
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}
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return this;
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}
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};
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// Backbone.Model
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// --------------
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// Create a new model, with defined attributes. A client id (`cid`)
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// is automatically generated and assigned for you.
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Backbone.Model = function(attributes, options) {
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attributes || (attributes = {});
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if (this.defaults) attributes = _.extend({}, this.defaults, attributes);
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this.attributes = {};
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this.cid = _.uniqueId('c');
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this.set(attributes, {silent : true});
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this._previousAttributes = _.clone(this.attributes);
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if (options && options.collection) this.collection = options.collection;
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this.initialize(attributes, options);
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};
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// Attach all inheritable methods to the Model prototype.
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_.extend(Backbone.Model.prototype, Backbone.Events, {
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// A snapshot of the model's previous attributes, taken immediately
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// after the last `"change"` event was fired.
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_previousAttributes : null,
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// Has the item been changed since the last `"change"` event?
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_changed : false,
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// Initialize is an empty function by default. Override it with your own
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// initialization logic.
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initialize : function(){},
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// Return a copy of the model's `attributes` object.
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toJSON : function() {
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return _.clone(this.attributes);
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},
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// Get the value of an attribute.
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get : function(attr) {
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return this.attributes[attr];
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},
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// Set a hash of model attributes on the object, firing `"change"` unless you
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// choose to silence it.
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set : function(attrs, options) {
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// Extract attributes and options.
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options || (options = {});
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if (!attrs) return this;
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if (attrs.attributes) attrs = attrs.attributes;
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var now = this.attributes;
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// Run validation.
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if (!options.silent && this.validate && !this._performValidation(attrs, options)) return false;
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// Check for changes of `id`.
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if ('id' in attrs) this.id = attrs.id;
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// Update attributes.
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for (var attr in attrs) {
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var val = attrs[attr];
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if (!_.isEqual(now[attr], val)) {
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now[attr] = val;
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if (!options.silent) {
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this._changed = true;
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this.trigger('change:' + attr, this, val);
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}
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}
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}
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// Fire the `"change"` event, if the model has been changed.
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if (!options.silent && this._changed) this.change();
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return this;
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},
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// Remove an attribute from the model, firing `"change"` unless you choose
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// to silence it.
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unset : function(attr, options) {
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options || (options = {});
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var value = this.attributes[attr];
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// Run validation.
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var validObj = {};
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validObj[attr] = void 0;
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if (!options.silent && this.validate && !this._performValidation(validObj, options)) return false;
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// Remove the attribute.
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delete this.attributes[attr];
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if (!options.silent) {
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this._changed = true;
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this.trigger('change:' + attr, this);
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this.change();
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}
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return this;
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},
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// Clear all attributes on the model, firing `"change"` unless you choose
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// to silence it.
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clear : function(options) {
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options || (options = {});
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var old = this.attributes;
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// Run validation.
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var validObj = {};
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for (attr in old) validObj[attr] = void 0;
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if (!options.silent && this.validate && !this._performValidation(validObj, options)) return false;
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this.attributes = {};
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if (!options.silent) {
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this._changed = true;
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for (attr in old) {
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this.trigger('change:' + attr, this);
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}
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this.change();
|
||||
}
|
||||
return this;
|
||||
},
|
||||
|
||||
// Fetch the model from the server. If the server's representation of the
|
||||
// model differs from its current attributes, they will be overriden,
|
||||
// triggering a `"change"` event.
|
||||
fetch : function(options) {
|
||||
options || (options = {});
|
||||
var model = this;
|
||||
var success = function(resp) {
|
||||
if (!model.set(model.parse(resp), options)) return false;
|
||||
if (options.success) options.success(model, resp);
|
||||
};
|
||||
var error = options.error && _.bind(options.error, null, model);
|
||||
(this.sync || Backbone.sync)('read', this, success, error);
|
||||
return this;
|
||||
},
|
||||
|
||||
// Set a hash of model attributes, and sync the model to the server.
|
||||
// If the server returns an attributes hash that differs, the model's
|
||||
// state will be `set` again.
|
||||
save : function(attrs, options) {
|
||||
options || (options = {});
|
||||
if (attrs && !this.set(attrs, options)) return false;
|
||||
var model = this;
|
||||
var success = function(resp) {
|
||||
if (!model.set(model.parse(resp), options)) return false;
|
||||
if (options.success) options.success(model, resp);
|
||||
};
|
||||
var error = options.error && _.bind(options.error, null, model);
|
||||
var method = this.isNew() ? 'create' : 'update';
|
||||
(this.sync || Backbone.sync)(method, this, success, error);
|
||||
return this;
|
||||
},
|
||||
|
||||
// Destroy this model on the server. Upon success, the model is removed
|
||||
// from its collection, if it has one.
|
||||
destroy : function(options) {
|
||||
options || (options = {});
|
||||
var model = this;
|
||||
var success = function(resp) {
|
||||
if (model.collection) model.collection.remove(model);
|
||||
if (options.success) options.success(model, resp);
|
||||
};
|
||||
var error = options.error && _.bind(options.error, null, model);
|
||||
(this.sync || Backbone.sync)('delete', this, success, error);
|
||||
return this;
|
||||
},
|
||||
|
||||
// Default URL for the model's representation on the server -- if you're
|
||||
// using Backbone's restful methods, override this to change the endpoint
|
||||
// that will be called.
|
||||
url : function() {
|
||||
var base = getUrl(this.collection);
|
||||
if (this.isNew()) return base;
|
||||
return base + (base.charAt(base.length - 1) == '/' ? '' : '/') + this.id;
|
||||
},
|
||||
|
||||
// **parse** converts a response into the hash of attributes to be `set` on
|
||||
// the model. The default implementation is just to pass the response along.
|
||||
parse : function(resp) {
|
||||
return resp;
|
||||
},
|
||||
|
||||
// Create a new model with identical attributes to this one.
|
||||
clone : function() {
|
||||
return new this.constructor(this);
|
||||
},
|
||||
|
||||
// A model is new if it has never been saved to the server, and has a negative
|
||||
// ID.
|
||||
isNew : function() {
|
||||
return !this.id;
|
||||
},
|
||||
|
||||
// Call this method to manually fire a `change` event for this model.
|
||||
// Calling this will cause all objects observing the model to update.
|
||||
change : function() {
|
||||
this.trigger('change', this);
|
||||
this._previousAttributes = _.clone(this.attributes);
|
||||
this._changed = false;
|
||||
},
|
||||
|
||||
// Determine if the model has changed since the last `"change"` event.
|
||||
// If you specify an attribute name, determine if that attribute has changed.
|
||||
hasChanged : function(attr) {
|
||||
if (attr) return this._previousAttributes[attr] != this.attributes[attr];
|
||||
return this._changed;
|
||||
},
|
||||
|
||||
// Return an object containing all the attributes that have changed, or false
|
||||
// if there are no changed attributes. Useful for determining what parts of a
|
||||
// view need to be updated and/or what attributes need to be persisted to
|
||||
// the server.
|
||||
changedAttributes : function(now) {
|
||||
now || (now = this.attributes);
|
||||
var old = this._previousAttributes;
|
||||
var changed = false;
|
||||
for (var attr in now) {
|
||||
if (!_.isEqual(old[attr], now[attr])) {
|
||||
changed = changed || {};
|
||||
changed[attr] = now[attr];
|
||||
}
|
||||
}
|
||||
return changed;
|
||||
},
|
||||
|
||||
// Get the previous value of an attribute, recorded at the time the last
|
||||
// `"change"` event was fired.
|
||||
previous : function(attr) {
|
||||
if (!attr || !this._previousAttributes) return null;
|
||||
return this._previousAttributes[attr];
|
||||
},
|
||||
|
||||
// Get all of the attributes of the model at the time of the previous
|
||||
// `"change"` event.
|
||||
previousAttributes : function() {
|
||||
return _.clone(this._previousAttributes);
|
||||
},
|
||||
|
||||
// Run validation against a set of incoming attributes, returning `true`
|
||||
// if all is well. If a specific `error` callback has been passed,
|
||||
// call that instead of firing the general `"error"` event.
|
||||
_performValidation : function(attrs, options) {
|
||||
var error = this.validate(attrs);
|
||||
if (error) {
|
||||
if (options.error) {
|
||||
options.error(this, error);
|
||||
} else {
|
||||
this.trigger('error', this, error);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
});
|
||||
|
||||
// Backbone.Collection
|
||||
// -------------------
|
||||
|
||||
// Provides a standard collection class for our sets of models, ordered
|
||||
// or unordered. If a `comparator` is specified, the Collection will maintain
|
||||
// its models in sort order, as they're added and removed.
|
||||
Backbone.Collection = function(models, options) {
|
||||
options || (options = {});
|
||||
if (options.comparator) {
|
||||
this.comparator = options.comparator;
|
||||
delete options.comparator;
|
||||
}
|
||||
this._boundOnModelEvent = _.bind(this._onModelEvent, this);
|
||||
this._reset();
|
||||
if (models) this.refresh(models, {silent: true});
|
||||
this.initialize(models, options);
|
||||
};
|
||||
|
||||
// Define the Collection's inheritable methods.
|
||||
_.extend(Backbone.Collection.prototype, Backbone.Events, {
|
||||
|
||||
// The default model for a collection is just a **Backbone.Model**.
|
||||
// This should be overridden in most cases.
|
||||
model : Backbone.Model,
|
||||
|
||||
// Initialize is an empty function by default. Override it with your own
|
||||
// initialization logic.
|
||||
initialize : function(){},
|
||||
|
||||
// The JSON representation of a Collection is an array of the
|
||||
// models' attributes.
|
||||
toJSON : function() {
|
||||
return this.map(function(model){ return model.toJSON(); });
|
||||
},
|
||||
|
||||
// Add a model, or list of models to the set. Pass **silent** to avoid
|
||||
// firing the `added` event for every new model.
|
||||
add : function(models, options) {
|
||||
if (_.isArray(models)) {
|
||||
for (var i = 0, l = models.length; i < l; i++) {
|
||||
this._add(models[i], options);
|
||||
}
|
||||
} else {
|
||||
this._add(models, options);
|
||||
}
|
||||
return this;
|
||||
},
|
||||
|
||||
// Remove a model, or a list of models from the set. Pass silent to avoid
|
||||
// firing the `removed` event for every model removed.
|
||||
remove : function(models, options) {
|
||||
if (_.isArray(models)) {
|
||||
for (var i = 0, l = models.length; i < l; i++) {
|
||||
this._remove(models[i], options);
|
||||
}
|
||||
} else {
|
||||
this._remove(models, options);
|
||||
}
|
||||
return this;
|
||||
},
|
||||
|
||||
// Get a model from the set by id.
|
||||
get : function(id) {
|
||||
if (id == null) return null;
|
||||
return this._byId[id.id != null ? id.id : id];
|
||||
},
|
||||
|
||||
// Get a model from the set by client id.
|
||||
getByCid : function(cid) {
|
||||
return cid && this._byCid[cid.cid || cid];
|
||||
},
|
||||
|
||||
// Get the model at the given index.
|
||||
at: function(index) {
|
||||
return this.models[index];
|
||||
},
|
||||
|
||||
// Force the collection to re-sort itself. You don't need to call this under normal
|
||||
// circumstances, as the set will maintain sort order as each item is added.
|
||||
sort : function(options) {
|
||||
options || (options = {});
|
||||
if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
|
||||
this.models = this.sortBy(this.comparator);
|
||||
if (!options.silent) this.trigger('refresh', this);
|
||||
return this;
|
||||
},
|
||||
|
||||
// Pluck an attribute from each model in the collection.
|
||||
pluck : function(attr) {
|
||||
return _.map(this.models, function(model){ return model.get(attr); });
|
||||
},
|
||||
|
||||
// When you have more items than you want to add or remove individually,
|
||||
// you can refresh the entire set with a new list of models, without firing
|
||||
// any `added` or `removed` events. Fires `refresh` when finished.
|
||||
refresh : function(models, options) {
|
||||
models || (models = []);
|
||||
options || (options = {});
|
||||
this._reset();
|
||||
this.add(models, {silent: true});
|
||||
if (!options.silent) this.trigger('refresh', this);
|
||||
return this;
|
||||
},
|
||||
|
||||
// Fetch the default set of models for this collection, refreshing the
|
||||
// collection when they arrive.
|
||||
fetch : function(options) {
|
||||
options || (options = {});
|
||||
var collection = this;
|
||||
var success = function(resp) {
|
||||
collection.refresh(collection.parse(resp));
|
||||
if (options.success) options.success(collection, resp);
|
||||
};
|
||||
var error = options.error && _.bind(options.error, null, collection);
|
||||
(this.sync || Backbone.sync)('read', this, success, error);
|
||||
return this;
|
||||
},
|
||||
|
||||
// Create a new instance of a model in this collection. After the model
|
||||
// has been created on the server, it will be added to the collection.
|
||||
create : function(model, options) {
|
||||
var coll = this;
|
||||
options || (options = {});
|
||||
if (!(model instanceof Backbone.Model)) {
|
||||
model = new this.model(model, {collection: coll});
|
||||
} else {
|
||||
model.collection = coll;
|
||||
}
|
||||
var success = function(nextModel, resp) {
|
||||
coll.add(nextModel);
|
||||
if (options.success) options.success(nextModel, resp);
|
||||
};
|
||||
return model.save(null, {success : success, error : options.error});
|
||||
},
|
||||
|
||||
// **parse** converts a response into a list of models to be added to the
|
||||
// collection. The default implementation is just to pass it through.
|
||||
parse : function(resp) {
|
||||
return resp;
|
||||
},
|
||||
|
||||
// Proxy to _'s chain. Can't be proxied the same way the rest of the
|
||||
// underscore methods are proxied because it relies on the underscore
|
||||
// constructor.
|
||||
chain: function () {
|
||||
return _(this.models).chain();
|
||||
},
|
||||
|
||||
// Reset all internal state. Called when the collection is refreshed.
|
||||
_reset : function(options) {
|
||||
this.length = 0;
|
||||
this.models = [];
|
||||
this._byId = {};
|
||||
this._byCid = {};
|
||||
},
|
||||
|
||||
// Internal implementation of adding a single model to the set, updating
|
||||
// hash indexes for `id` and `cid` lookups.
|
||||
_add : function(model, options) {
|
||||
options || (options = {});
|
||||
if (!(model instanceof Backbone.Model)) {
|
||||
model = new this.model(model, {collection: this});
|
||||
}
|
||||
var already = this.getByCid(model);
|
||||
if (already) throw new Error(["Can't add the same model to a set twice", already.id]);
|
||||
this._byId[model.id] = model;
|
||||
this._byCid[model.cid] = model;
|
||||
model.collection = this;
|
||||
var index = this.comparator ? this.sortedIndex(model, this.comparator) : this.length;
|
||||
this.models.splice(index, 0, model);
|
||||
model.bind('all', this._boundOnModelEvent);
|
||||
this.length++;
|
||||
if (!options.silent) model.trigger('add', model, this);
|
||||
return model;
|
||||
},
|
||||
|
||||
// Internal implementation of removing a single model from the set, updating
|
||||
// hash indexes for `id` and `cid` lookups.
|
||||
_remove : function(model, options) {
|
||||
options || (options = {});
|
||||
model = this.getByCid(model) || this.get(model);
|
||||
if (!model) return null;
|
||||
delete this._byId[model.id];
|
||||
delete this._byCid[model.cid];
|
||||
delete model.collection;
|
||||
this.models.splice(this.indexOf(model), 1);
|
||||
this.length--;
|
||||
if (!options.silent) model.trigger('remove', model, this);
|
||||
model.unbind('all', this._boundOnModelEvent);
|
||||
return model;
|
||||
},
|
||||
|
||||
// Internal method called every time a model in the set fires an event.
|
||||
// Sets need to update their indexes when models change ids. All other
|
||||
// events simply proxy through.
|
||||
_onModelEvent : function(ev, model) {
|
||||
if (ev === 'change:id') {
|
||||
delete this._byId[model.previous('id')];
|
||||
this._byId[model.id] = model;
|
||||
}
|
||||
this.trigger.apply(this, arguments);
|
||||
}
|
||||
|
||||
});
|
||||
|
||||
// Underscore methods that we want to implement on the Collection.
|
||||
var methods = ['forEach', 'each', 'map', 'reduce', 'reduceRight', 'find', 'detect',
|
||||
'filter', 'select', 'reject', 'every', 'all', 'some', 'any', 'include',
|
||||
'invoke', 'max', 'min', 'sortBy', 'sortedIndex', 'toArray', 'size',
|
||||
'first', 'rest', 'last', 'without', 'indexOf', 'lastIndexOf', 'isEmpty'];
|
||||
|
||||
// Mix in each Underscore method as a proxy to `Collection#models`.
|
||||
_.each(methods, function(method) {
|
||||
Backbone.Collection.prototype[method] = function() {
|
||||
return _[method].apply(_, [this.models].concat(_.toArray(arguments)));
|
||||
};
|
||||
});
|
||||
|
||||
// Backbone.Controller
|
||||
// -------------------
|
||||
|
||||
// Controllers map faux-URLs to actions, and fire events when routes are
|
||||
// matched. Creating a new one sets its `routes` hash, if not set statically.
|
||||
Backbone.Controller = function(options) {
|
||||
options || (options = {});
|
||||
if (options.routes) this.routes = options.routes;
|
||||
this._bindRoutes();
|
||||
this.initialize(options);
|
||||
};
|
||||
|
||||
// Cached regular expressions for matching named param parts and splatted
|
||||
// parts of route strings.
|
||||
var namedParam = /:([\w\d]+)/g;
|
||||
var splatParam = /\*([\w\d]+)/g;
|
||||
|
||||
// Set up all inheritable **Backbone.Controller** properties and methods.
|
||||
_.extend(Backbone.Controller.prototype, Backbone.Events, {
|
||||
|
||||
// Initialize is an empty function by default. Override it with your own
|
||||
// initialization logic.
|
||||
initialize : function(){},
|
||||
|
||||
// Manually bind a single named route to a callback. For example:
|
||||
//
|
||||
// this.route('search/:query/p:num', 'search', function(query, num) {
|
||||
// ...
|
||||
// });
|
||||
//
|
||||
route : function(route, name, callback) {
|
||||
Backbone.history || (Backbone.history = new Backbone.History);
|
||||
if (!_.isRegExp(route)) route = this._routeToRegExp(route);
|
||||
Backbone.history.route(route, _.bind(function(fragment) {
|
||||
var args = this._extractParameters(route, fragment);
|
||||
callback.apply(this, args);
|
||||
this.trigger.apply(this, ['route:' + name].concat(args));
|
||||
}, this));
|
||||
},
|
||||
|
||||
// Simple proxy to `Backbone.history` to save a fragment into the history,
|
||||
// without triggering routes.
|
||||
saveLocation : function(fragment) {
|
||||
Backbone.history.saveLocation(fragment);
|
||||
},
|
||||
|
||||
// Bind all defined routes to `Backbone.history`.
|
||||
_bindRoutes : function() {
|
||||
if (!this.routes) return;
|
||||
for (var route in this.routes) {
|
||||
var name = this.routes[route];
|
||||
this.route(route, name, this[name]);
|
||||
}
|
||||
},
|
||||
|
||||
// Convert a route string into a regular expression, suitable for matching
|
||||
// against the current location fragment.
|
||||
_routeToRegExp : function(route) {
|
||||
route = route.replace(namedParam, "([^\/]*)").replace(splatParam, "(.*?)");
|
||||
return new RegExp('^' + route + '$');
|
||||
},
|
||||
|
||||
// Given a route, and a URL fragment that it matches, return the array of
|
||||
// extracted parameters.
|
||||
_extractParameters : function(route, fragment) {
|
||||
return route.exec(fragment).slice(1);
|
||||
}
|
||||
|
||||
});
|
||||
|
||||
// Backbone.History
|
||||
// ----------------
|
||||
|
||||
// Handles cross-browser history management, based on URL hashes. If the
|
||||
// browser does not support `onhashchange`, falls back to polling.
|
||||
Backbone.History = function() {
|
||||
this.handlers = [];
|
||||
this.fragment = this.getFragment();
|
||||
_.bindAll(this, 'checkUrl');
|
||||
};
|
||||
|
||||
// Cached regex for cleaning hashes.
|
||||
var hashStrip = /^#*/;
|
||||
|
||||
// Set up all inheritable **Backbone.History** properties and methods.
|
||||
_.extend(Backbone.History.prototype, {
|
||||
|
||||
// The default interval to poll for hash changes, if necessary, is
|
||||
// twenty times a second.
|
||||
interval: 50,
|
||||
|
||||
// Get the cross-browser normalized URL fragment.
|
||||
getFragment : function(loc) {
|
||||
return (loc || window.location).hash.replace(hashStrip, '');
|
||||
},
|
||||
|
||||
// Start the hash change handling, returning `true` if the current URL matches
|
||||
// an existing route, and `false` otherwise.
|
||||
start : function() {
|
||||
var docMode = document.documentMode;
|
||||
var oldIE = ($.browser.msie && (!docMode || docMode <= 7));
|
||||
if (oldIE) {
|
||||
this.iframe = $('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo('body')[0].contentWindow;
|
||||
}
|
||||
if ('onhashchange' in window && !oldIE) {
|
||||
$(window).bind('hashchange', this.checkUrl);
|
||||
} else {
|
||||
setInterval(this.checkUrl, this.interval);
|
||||
}
|
||||
return this.loadUrl();
|
||||
},
|
||||
|
||||
// Add a route to be tested when the hash changes. Routes are matched in the
|
||||
// order they are added.
|
||||
route : function(route, callback) {
|
||||
this.handlers.push({route : route, callback : callback});
|
||||
},
|
||||
|
||||
// Checks the current URL to see if it has changed, and if it has,
|
||||
// calls `loadUrl`, normalizing across the hidden iframe.
|
||||
checkUrl : function() {
|
||||
var current = this.getFragment();
|
||||
if (current == this.fragment && this.iframe) {
|
||||
current = this.getFragment(this.iframe.location);
|
||||
}
|
||||
if (current == this.fragment ||
|
||||
current == decodeURIComponent(this.fragment)) return false;
|
||||
if (this.iframe) {
|
||||
window.location.hash = this.iframe.location.hash = current;
|
||||
}
|
||||
this.loadUrl();
|
||||
},
|
||||
|
||||
// Attempt to load the current URL fragment. If a route succeeds with a
|
||||
// match, returns `true`. If no defined routes matches the fragment,
|
||||
// returns `false`.
|
||||
loadUrl : function() {
|
||||
var fragment = this.fragment = this.getFragment();
|
||||
var matched = _.any(this.handlers, function(handler) {
|
||||
if (handler.route.test(fragment)) {
|
||||
handler.callback(fragment);
|
||||
return true;
|
||||
}
|
||||
});
|
||||
return matched;
|
||||
},
|
||||
|
||||
// Save a fragment into the hash history. You are responsible for properly
|
||||
// URL-encoding the fragment in advance. This does not trigger
|
||||
// a `hashchange` event.
|
||||
saveLocation : function(fragment) {
|
||||
fragment = (fragment || '').replace(hashStrip, '');
|
||||
if (this.fragment == fragment) return;
|
||||
window.location.hash = this.fragment = fragment;
|
||||
if (this.iframe && (fragment != this.getFragment(this.iframe.location))) {
|
||||
this.iframe.document.open().close();
|
||||
this.iframe.location.hash = fragment;
|
||||
}
|
||||
}
|
||||
|
||||
});
|
||||
|
||||
// Backbone.View
|
||||
// -------------
|
||||
|
||||
// Creating a Backbone.View creates its initial element outside of the DOM,
|
||||
// if an existing element is not provided...
|
||||
Backbone.View = function(options) {
|
||||
this._configure(options || {});
|
||||
this._ensureElement();
|
||||
this.delegateEvents();
|
||||
this.initialize(options);
|
||||
};
|
||||
|
||||
// jQuery lookup, scoped to DOM elements within the current view.
|
||||
// This should be prefered to global jQuery lookups, if you're dealing with
|
||||
// a specific view.
|
||||
var jQueryDelegate = function(selector) {
|
||||
return $(selector, this.el);
|
||||
};
|
||||
|
||||
// Cached regex to split keys for `delegate`.
|
||||
var eventSplitter = /^(\w+)\s*(.*)$/;
|
||||
|
||||
// Set up all inheritable **Backbone.View** properties and methods.
|
||||
_.extend(Backbone.View.prototype, Backbone.Events, {
|
||||
|
||||
// The default `tagName` of a View's element is `"div"`.
|
||||
tagName : 'div',
|
||||
|
||||
// Attach the jQuery function as the `$` and `jQuery` properties.
|
||||
$ : jQueryDelegate,
|
||||
jQuery : jQueryDelegate,
|
||||
|
||||
// Initialize is an empty function by default. Override it with your own
|
||||
// initialization logic.
|
||||
initialize : function(){},
|
||||
|
||||
// **render** is the core function that your view should override, in order
|
||||
// to populate its element (`this.el`), with the appropriate HTML. The
|
||||
// convention is for **render** to always return `this`.
|
||||
render : function() {
|
||||
return this;
|
||||
},
|
||||
|
||||
// Remove this view from the DOM. Note that the view isn't present in the
|
||||
// DOM by default, so calling this method may be a no-op.
|
||||
remove : function() {
|
||||
$(this.el).remove();
|
||||
return this;
|
||||
},
|
||||
|
||||
// For small amounts of DOM Elements, where a full-blown template isn't
|
||||
// needed, use **make** to manufacture elements, one at a time.
|
||||
//
|
||||
// var el = this.make('li', {'class': 'row'}, this.model.get('title'));
|
||||
//
|
||||
make : function(tagName, attributes, content) {
|
||||
var el = document.createElement(tagName);
|
||||
if (attributes) $(el).attr(attributes);
|
||||
if (content) $(el).html(content);
|
||||
return el;
|
||||
},
|
||||
|
||||
// Set callbacks, where `this.callbacks` is a hash of
|
||||
//
|
||||
// *{"event selector": "callback"}*
|
||||
//
|
||||
// {
|
||||
// 'mousedown .title': 'edit',
|
||||
// 'click .button': 'save'
|
||||
// }
|
||||
//
|
||||
// pairs. Callbacks will be bound to the view, with `this` set properly.
|
||||
// Uses jQuery event delegation for efficiency.
|
||||
// Omitting the selector binds the event to `this.el`.
|
||||
// This only works for delegate-able events: not `focus`, `blur`, and
|
||||
// not `change`, `submit`, and `reset` in Internet Explorer.
|
||||
delegateEvents : function(events) {
|
||||
if (!(events || (events = this.events))) return;
|
||||
$(this.el).unbind();
|
||||
for (var key in events) {
|
||||
var methodName = events[key];
|
||||
var match = key.match(eventSplitter);
|
||||
var eventName = match[1], selector = match[2];
|
||||
var method = _.bind(this[methodName], this);
|
||||
if (selector === '') {
|
||||
$(this.el).bind(eventName, method);
|
||||
} else {
|
||||
$(this.el).delegate(selector, eventName, method);
|
||||
}
|
||||
}
|
||||
},
|
||||
|
||||
// Performs the initial configuration of a View with a set of options.
|
||||
// Keys with special meaning *(model, collection, id, className)*, are
|
||||
// attached directly to the view.
|
||||
_configure : function(options) {
|
||||
if (this.options) options = _.extend({}, this.options, options);
|
||||
if (options.model) this.model = options.model;
|
||||
if (options.collection) this.collection = options.collection;
|
||||
if (options.el) this.el = options.el;
|
||||
if (options.id) this.id = options.id;
|
||||
if (options.className) this.className = options.className;
|
||||
if (options.tagName) this.tagName = options.tagName;
|
||||
this.options = options;
|
||||
},
|
||||
|
||||
// Ensure that the View has a DOM element to render into.
|
||||
_ensureElement : function() {
|
||||
if (this.el) return;
|
||||
var attrs = {};
|
||||
if (this.id) attrs.id = this.id;
|
||||
if (this.className) attrs.className = this.className;
|
||||
this.el = this.make(this.tagName, attrs);
|
||||
}
|
||||
|
||||
});
|
||||
|
||||
// The self-propagating extend function that Backbone classes use.
|
||||
var extend = function (protoProps, classProps) {
|
||||
var child = inherits(this, protoProps, classProps);
|
||||
child.extend = extend;
|
||||
return child;
|
||||
};
|
||||
|
||||
// Set up inheritance for the model, collection, and view.
|
||||
Backbone.Model.extend = Backbone.Collection.extend =
|
||||
Backbone.Controller.extend = Backbone.View.extend = extend;
|
||||
|
||||
// Map from CRUD to HTTP for our default `Backbone.sync` implementation.
|
||||
var methodMap = {
|
||||
'create': 'POST',
|
||||
'update': 'PUT',
|
||||
'delete': 'DELETE',
|
||||
'read' : 'GET'
|
||||
};
|
||||
|
||||
// Backbone.sync
|
||||
// -------------
|
||||
|
||||
// Override this function to change the manner in which Backbone persists
|
||||
// models to the server. You will be passed the type of request, and the
|
||||
// model in question. By default, uses jQuery to make a RESTful Ajax request
|
||||
// to the model's `url()`. Some possible customizations could be:
|
||||
//
|
||||
// * Use `setTimeout` to batch rapid-fire updates into a single request.
|
||||
// * Send up the models as XML instead of JSON.
|
||||
// * Persist models via WebSockets instead of Ajax.
|
||||
//
|
||||
// Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
|
||||
// as `POST`, with a `_method` parameter containing the true HTTP method,
|
||||
// as well as all requests with the body as `application/x-www-form-urlencoded` instead of
|
||||
// `application/json` with the model in a param named `model`.
|
||||
// Useful when interfacing with server-side languages like **PHP** that make
|
||||
// it difficult to read the body of `PUT` requests.
|
||||
Backbone.sync = function(method, model, success, error) {
|
||||
var type = methodMap[method];
|
||||
var modelJSON = (method === 'create' || method === 'update') ?
|
||||
JSON.stringify(model.toJSON()) : null;
|
||||
|
||||
// Default JSON-request options.
|
||||
var params = {
|
||||
url: getUrl(model),
|
||||
type: type,
|
||||
contentType: 'application/json',
|
||||
data: modelJSON,
|
||||
dataType: 'json',
|
||||
processData: false,
|
||||
success: success,
|
||||
error: error
|
||||
};
|
||||
|
||||
// For older servers, emulate JSON by encoding the request into an HTML-form.
|
||||
if (Backbone.emulateJSON) {
|
||||
params.contentType = 'application/x-www-form-urlencoded';
|
||||
params.processData = true;
|
||||
params.data = modelJSON ? {model : modelJSON} : {};
|
||||
}
|
||||
|
||||
// For older servers, emulate HTTP by mimicking the HTTP method with `_method`
|
||||
// And an `X-HTTP-Method-Override` header.
|
||||
if (Backbone.emulateHTTP) {
|
||||
if (type === 'PUT' || type === 'DELETE') {
|
||||
if (Backbone.emulateJSON) params.data._method = type;
|
||||
params.type = 'POST';
|
||||
params.beforeSend = function(xhr) {
|
||||
xhr.setRequestHeader("X-HTTP-Method-Override", type);
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
// Make the request.
|
||||
$.ajax(params);
|
||||
};
|
||||
|
||||
// Helpers
|
||||
// -------
|
||||
|
||||
// Shared empty constructor function to aid in prototype-chain creation.
|
||||
var ctor = function(){};
|
||||
|
||||
// Helper function to correctly set up the prototype chain, for subclasses.
|
||||
// Similar to `goog.inherits`, but uses a hash of prototype properties and
|
||||
// class properties to be extended.
|
||||
var inherits = function(parent, protoProps, staticProps) {
|
||||
var child;
|
||||
|
||||
// The constructor function for the new subclass is either defined by you
|
||||
// (the "constructor" property in your `extend` definition), or defaulted
|
||||
// by us to simply call `super()`.
|
||||
if (protoProps && protoProps.hasOwnProperty('constructor')) {
|
||||
child = protoProps.constructor;
|
||||
} else {
|
||||
child = function(){ return parent.apply(this, arguments); };
|
||||
}
|
||||
|
||||
// Set the prototype chain to inherit from `parent`, without calling
|
||||
// `parent`'s constructor function.
|
||||
ctor.prototype = parent.prototype;
|
||||
child.prototype = new ctor();
|
||||
|
||||
// Add prototype properties (instance properties) to the subclass,
|
||||
// if supplied.
|
||||
if (protoProps) _.extend(child.prototype, protoProps);
|
||||
|
||||
// Add static properties to the constructor function, if supplied.
|
||||
if (staticProps) _.extend(child, staticProps);
|
||||
|
||||
// Correctly set child's `prototype.constructor`, for `instanceof`.
|
||||
child.prototype.constructor = child;
|
||||
|
||||
// Set a convenience property in case the parent's prototype is needed later.
|
||||
child.__super__ = parent.prototype;
|
||||
|
||||
return child;
|
||||
};
|
||||
|
||||
// Helper function to get a URL from a Model or Collection as a property
|
||||
// or as a function.
|
||||
var getUrl = function(object) {
|
||||
if (!(object && object.url)) throw new Error("A 'url' property or function must be specified");
|
||||
return _.isFunction(object.url) ? object.url() : object.url;
|
||||
};
|
||||
|
||||
})();
|
||||
Reference in New Issue
Block a user