backbone.fetch-cache.min.js

/*  backbone-fetch-cache v1.5.5 (2014-12-22)
  by MadGlory <hello@madglory.com> (http://madglory.com) - https://github.com/madglory/backbone-fetch-cache.git
 */
!function(a,b){"function"==typeof define&&define.amd?define(["underscore","backbone","jquery"],function(_,Backbone,c){return a.Backbone=b(_,Backbone,c)}):"undefined"!=typeof exports&&"undefined"!=typeof require?module.exports=b(require("underscore"),require("backbone"),require("jquery")):a.Backbone=b(a._,a.Backbone,a.jQuery)}(this,function(_,Backbone,a){function b(b,c){if(b&&_.isObject(b)){if(_.isFunction(b.getCacheKey))return b.getCacheKey(c);b=c&&c.url?c.url:_.isFunction(b.url)?b.url():b.url}else if(_.isFunction(b))return b(c);return c&&c.data?"string"==typeof c.data?b+"?"+c.data:b+"?"+a.param(c.data):b}function c(a,b,c){b=b||{};var d=Backbone.fetchCache.getCacheKey(a,b),e=!1,f=b.lastSync||(new Date).getTime(),g=!1;d&&b.cache!==!1&&(b.cache||b.prefill)&&(b.expires!==!1&&(e=(new Date).getTime()+1e3*(b.expires||300)),b.prefillExpires!==!1&&(g=(new Date).getTime()+1e3*(b.prefillExpires||300)),Backbone.fetchCache._cache[d]={expires:e,lastSync:f,prefillExpires:g,value:c},Backbone.fetchCache.setLocalStorage())}function d(a,c){return _.isFunction(a)?a=a():a&&_.isObject(a)&&(a=b(a,c)),Backbone.fetchCache._cache[a]}function e(a){return d(a).lastSync}function f(a,c){_.isFunction(a)?a=a():a&&_.isObject(a)&&(a=b(a,c)),delete Backbone.fetchCache._cache[a],Backbone.fetchCache.setLocalStorage()}function g(){if(k&&Backbone.fetchCache.localStorage)try{localStorage.setItem(Backbone.fetchCache.getLocalStorageKey(),JSON.stringify(Backbone.fetchCache._cache))}catch(a){var b=a.code||a.number||a.message;if(22!==b&&1014!==b)throw a;this._deleteCacheWithPriority()}}function h(){if(k&&Backbone.fetchCache.localStorage){var a=localStorage.getItem(Backbone.fetchCache.getLocalStorageKey())||"{}";Backbone.fetchCache._cache=JSON.parse(a)}}function i(a){return window.setTimeout(a,0)}var j={modelFetch:Backbone.Model.prototype.fetch,modelSync:Backbone.Model.prototype.sync,collectionFetch:Backbone.Collection.prototype.fetch},k=function(){var a="undefined"!=typeof window.localStorage;if(a)try{localStorage.setItem("test_support","test_support"),localStorage.removeItem("test_support")}catch(b){a=!1}return a}();return Backbone.fetchCache=Backbone.fetchCache||{},Backbone.fetchCache._cache=Backbone.fetchCache._cache||{},Backbone.fetchCache.enabled=!0,Backbone.fetchCache.priorityFn=function(a,b){return a&&a.expires&&b&&b.expires?a.expires-b.expires:a},Backbone.fetchCache._prioritize=function(){var a=_.values(this._cache).sort(this.priorityFn),b=_.indexOf(_.values(this._cache),a[0]);return _.keys(this._cache)[b]},Backbone.fetchCache._deleteCacheWithPriority=function(){Backbone.fetchCache._cache[this._prioritize()]=null,delete Backbone.fetchCache._cache[this._prioritize()],Backbone.fetchCache.setLocalStorage()},Backbone.fetchCache.getLocalStorageKey=function(){return"backboneCache"},"undefined"==typeof Backbone.fetchCache.localStorage&&(Backbone.fetchCache.localStorage=!0),Backbone.Model.prototype.fetch=function(b){function c(){return b.prefill&&(!b.prefillExpires||k)}function e(){b.parse&&(l=n.parse(l,b)),n.set(l,b),_.isFunction(b.prefillSuccess)&&b.prefillSuccess(n,l,b),n.trigger("cachesync",n,l,b),n.trigger("sync",n,l,b),c()?m.notify(n):(_.isFunction(b.success)&&b.success(n,l,b),m.resolve(n))}if(!Backbone.fetchCache.enabled)return j.modelFetch.apply(this,arguments);b=_.defaults(b||{},{parse:!0});var f=Backbone.fetchCache.getCacheKey(this,b),g=d(f),h=!1,k=!1,l=!1,m=new a.Deferred,n=this;if(g&&(h=g.expires,h=h&&g.expires<(new Date).getTime(),k=g.prefillExpires,k=k&&g.prefillExpires<(new Date).getTime(),l=g.value),!h&&(b.cache||b.prefill)&&l&&(null==b.async&&(b.async=!0),b.async?i(e):e(),!c()))return m;var o=j.modelFetch.apply(this,arguments);return o.done(_.bind(m.resolve,this,this)).done(_.bind(Backbone.fetchCache.setCache,null,this,b)).fail(_.bind(m.reject,this,this)),m.abort=o.abort,m},Backbone.Model.prototype.sync=function(a,b,c){if("read"===a||!Backbone.fetchCache.enabled)return j.modelSync.apply(this,arguments);var d,e,g=b.collection,h=[];for(h.push(Backbone.fetchCache.getCacheKey(b,c)),g&&h.push(Backbone.fetchCache.getCacheKey(g)),d=0,e=h.length;e>d;d++)f(h[d]);return j.modelSync.apply(this,arguments)},Backbone.Collection.prototype.fetch=function(b){function c(){return b.prefill&&(!b.prefillExpires||k)}function e(){n[b.reset?"reset":"set"](l,b),_.isFunction(b.prefillSuccess)&&b.prefillSuccess(n),n.trigger("cachesync",n,l,b),n.trigger("sync",n,l,b),c()?m.notify(n):(_.isFunction(b.success)&&b.success(n,l,b),m.resolve(n))}if(!Backbone.fetchCache.enabled)return j.collectionFetch.apply(this,arguments);b=_.defaults(b||{},{parse:!0});var f=Backbone.fetchCache.getCacheKey(this,b),g=d(f),h=!1,k=!1,l=!1,m=new a.Deferred,n=this;if(g&&(h=g.expires,h=h&&g.expires<(new Date).getTime(),k=g.prefillExpires,k=k&&g.prefillExpires<(new Date).getTime(),l=g.value),!h&&(b.cache||b.prefill)&&l&&(null==b.async&&(b.async=!0),b.async?i(e):e(),!c()))return m;var o=j.collectionFetch.apply(this,arguments);return o.done(_.bind(m.resolve,this,this)).done(_.bind(Backbone.fetchCache.setCache,null,this,b)).fail(_.bind(m.reject,this,this)),m.abort=o.abort,m},h(),Backbone.fetchCache._superMethods=j,Backbone.fetchCache.setCache=c,Backbone.fetchCache.getCache=d,Backbone.fetchCache.getCacheKey=b,Backbone.fetchCache.getLastSync=e,Backbone.fetchCache.clearItem=f,Backbone.fetchCache.setLocalStorage=g,Backbone.fetchCache.getLocalStorage=h,Backbone});