postal.js/lib/browser/postal.min.js

(function(a,b,c){typeof define=="function"&&define.amd?define(["underscore"],function(d){return c(d,a,b)}):c(a._,a,b)})(this,document,function(a,b,c,d){var e="/",f=50,g=0,h="postal",i=function(){},j=function(){var b;return function(c){var d=!1;return a.isString(c)?(d=c===b,b=c):(d=a.isEqual(c,b),b=a.clone(c)),!d}},k=function(a,b){this.channel=a||e,this._topic=b||""};k.prototype={subscribe:function(){var a=arguments.length;if(a===1)return new l(this.channel,this._topic,arguments[0]);if(a===2)return new l(this.channel,arguments[0],arguments[1])},publish:function(a){var b={channel:this.channel,topic:this._topic,data:a};a.topic&&a.data&&(b=a,b.channel=b.channel||this.channel),b.timeStamp=new Date,p.configuration.bus.publish(b)},topic:function(a){return a===this._topic?this:new k(this.channel,a)}};var l=function(a,b,c){this.channel=a,this.topic=b,this.callback=c,this.priority=f,this.constraints=new Array(0),this.maxCalls=g,this.onHandled=i,this.context=null,p.configuration.bus.publish({channel:h,topic:"subscription.created",timeStamp:new Date,data:{event:"subscription.created",channel:a,topic:b}}),p.configuration.bus.subscribe(this)};l.prototype={unsubscribe:function(){p.configuration.bus.unsubscribe(this),p.configuration.bus.publish({channel:h,topic:"subscription.removed",timeStamp:new Date,data:{event:"subscription.removed",channel:this.channel,topic:this.topic}})},defer:function(){var a=this.callback;return this.callback=function(b){setTimeout(a,0,b)},this},disposeAfter:function(b){if(a.isNaN(b)||b<=0)throw"The value provided to disposeAfter (maxCalls) must be a number greater than zero.";var c=this.onHandled,d=a.after(b,a.bind(function(){this.unsubscribe(this)},this));return this.onHandled=function(){c.apply(this.context,arguments),d()},this},ignoreDuplicates:function(){return this.withConstraint(new j),this},whenHandledThenExecute:function(b){if(!a.isFunction(b))throw"Value provided to 'whenHandledThenExecute' must be a function";return this.onHandled=b,this},withConstraint:function(b){if(!a.isFunction(b))throw"Predicate constraint must be a function";return this.constraints.push(b),this},withConstraints:function(b){var c=this;return a.isArray(b)&&a.each(b,function(a){c.withConstraint(a)}),c},withContext:function(a){return this.context=a,this},withDebounce:function(b){if(a.isNaN(b))throw"Milliseconds must be a number";var c=this.callback;return this.callback=a.debounce(c,b),this},withDelay:function(b){if(a.isNaN(b))throw"Milliseconds must be a number";var c=this.callback;return this.callback=function(a){setTimeout(c,b,a)},this},withPriority:function(b){if(a.isNaN(b))throw"Priority must be a number";return this.priority=b,this},withThrottle:function(b){if(a.isNaN(b))throw"Milliseconds must be a number";var c=this.callback;return this.callback=a.throttle(c,b),this},subscribe:function(a){return this.callback=callback,this}};var m={cache:{},compare:function(a,b){if(this.cache[b]&&this.cache[b][a])return!0;var c=new RegExp("^"+a.replace(/\./g,"\\.").replace(/\*/g,".*").replace(/#/g,"[A-Z,a-z,0-9]*")+"$"),d=c.test(b);return d&&(this.cache[b]||(this.cache[b]={}),this.cache[b][a]=!0),d}},n={subscriptions:{},wireTaps:new Array(0),publish:function(b){a.each(this.wireTaps,function(a){a(b.data,b)}),a.each(this.subscriptions[b.channel],function(c){a.each(c,function(c){p.configuration.resolver.compare(c.topic,b.topic)&&a.all(c.constraints,function(a){return a(b.data)})&&typeof c.callback=="function"&&(c.callback.apply(c.context,[b.data,b]),c.onHandled())})})},subscribe:function(a){var b,c,d,e=this.subscriptions[a.channel],f;e||(e=this.subscriptions[a.channel]={}),f=this.subscriptions[a.channel][a.topic],f||(f=this.subscriptions[a.channel][a.topic]=new Array(0)),b=f.length-1;for(;b>=0;b--)if(f[b].priority<=a.priority){f.splice(b+1,0,a),c=!0;break}return c||f.unshift(a),a},unsubscribe:function(a){if(this.subscriptions[a.channel][a.topic]){var b=this.subscriptions[a.channel][a.topic].length,c=0;for(;c<b;c++)if(this.subscriptions[a.channel][a.topic][c]===a){this.subscriptions[a.channel][a.topic].splice(c,1);break}}},addWireTap:function(a){var b=this;return b.wireTaps.push(a),function(){var c=b.wireTaps.indexOf(a);c!==-1&&b.wireTaps.splice(c,1)}}},o={1:function(a){if(!a)throw new Error("publishing from the 'global' postal.publish call requires a valid envelope.");a.channel=a.channel||e,a.timeStamp=new Date,p.configuration.bus.publish(a)},2:function(a,b){p.configuration.bus.publish({channel:e,topic:a,timeStamp:new Date,data:b})},3:function(a,b,c){p.configuration.bus.publish({channel:a,topic:b,timeStamp:new Date,data:c})}};n.subscriptions[h]={};var p={configuration:{bus:n,resolver:m},channel:function(){var a=arguments.length,b=arguments[0],c=arguments[1];return a===1&&(Object.prototype.toString.call(b)==="[object String]"?(b=e,c=arguments[0]):(b=arguments[0].channel||e,c=arguments[0].topic)),new k(b,c)},subscribe:function(a){var b=a.callback,c=a.topic,d=a.channel||e;return new l(d,c,b)},publish:function(){var a=arguments.length;o[a]&&o[a].apply(this,arguments)},addWireTap:function(a){return this.configuration.bus.addWireTap(a)},linkChannels:function(b,c){var d=[];return a.isArray(b)||(b=[b]),a.isArray(c)||(c=[c]),a.each(b,function(b){var f=b.topic||"*";a.each(c,function(c){var f=c.channel||e;d.push(p.subscribe({channel:b.channel||e,topic:b.topic||"*",callback:function(b,d){var e=d;e.topic=a.isFunction(c.topic)?c.topic(d.topic):c.topic||d.topic,e.channel=f,e.data=b,p.publish(e)}}))})}),d}};return b.postal=p,p})