postal.min.js

/*
 postal
 Author: Jim Cowart (http://freshbrewedcode.com/jimcowart)
 License: Dual licensed MIT (http://www.opensource.org/licenses/mit-license) & GPL (http://www.opensource.org/licenses/gpl-license)
 Version 0.8.3
 */
(function(n,t){"object"==typeof module&&module.exports?module.exports=function(n){return n=n||require("underscore"),t(n)}:"function"==typeof define&&define.amd?define(["underscore"],function(i){return t(i,n)}):n.postal=t(n._,n)})(this,function(n){var t="/",i="postal",s=function(){var t;return function(i){var s=!1;return n.isString(i)?(s=i===t,t=i):(s=n.isEqual(i,t),t=n.clone(i)),!s}},c=function(){var t=[];return function(i){var s=!n.any(t,function(t){return n.isObject(i)||n.isArray(i)?n.isEqual(i,t):i===t});return s&&t.push(i),s}},e=function(n){this.channel=n||t};e.prototype.subscribe=function(){return 1===arguments.length?new r(this.channel,arguments[0].topic,arguments[0].callback):new r(this.channel,arguments[0],arguments[1])},e.prototype.publish=function(){var n=1===arguments.length?"[object String]"===Object.prototype.toString.call(arguments[0])?{topic:arguments[0]}:arguments[0]:{topic:arguments[0],data:arguments[1]};return n.channel=this.channel,h.configuration.bus.publish(n)};var r=function(n,t,s){this.channel=n,this.topic=t,this.callback=s,this.constraints=[],this.context=null,h.configuration.bus.publish({channel:i,topic:"subscription.created",data:{event:"subscription.created",channel:n,topic:t}}),h.configuration.bus.subscribe(this)};r.prototype={unsubscribe:function(){h.configuration.bus.unsubscribe(this),h.configuration.bus.publish({channel:i,topic:"subscription.removed",data:{event:"subscription.removed",channel:this.channel,topic:this.topic}})},defer:function(){var n=this.callback;return this.callback=function(t){setTimeout(function(){n(t)},0)},this},disposeAfter:function(t){if(n.isNaN(t)||0>=t)throw"The value provided to disposeAfter (maxCalls) must be a number greater than zero.";var i=this.callback,s=n.after(t,n.bind(function(){this.unsubscribe()},this));return this.callback=function(){i.apply(this.context,arguments),s()},this},distinctUntilChanged:function(){return this.withConstraint(new s),this},distinct:function(){return this.withConstraint(new c),this},once:function(){this.disposeAfter(1)},withConstraint:function(t){if(!n.isFunction(t))throw"Predicate constraint must be a function";return this.constraints.push(t),this},withConstraints:function(t){var i=this;return n.isArray(t)&&n.each(t,function(n){i.withConstraint(n)}),i},withContext:function(n){return this.context=n,this},withDebounce:function(t){if(n.isNaN(t))throw"Milliseconds must be a number";var i=this.callback;return this.callback=n.debounce(i,t),this},withDelay:function(t){if(n.isNaN(t))throw"Milliseconds must be a number";var i=this.callback;return this.callback=function(n){setTimeout(function(){i(n)},t)},this},withThrottle:function(t){if(n.isNaN(t))throw"Milliseconds must be a number";var i=this.callback;return this.callback=n.throttle(i,t),this},subscribe:function(n){return this.callback=n,this}};var o={cache:{},regex:{},compare:function(t,i){var s,c,e,r=this.cache[i]&&this.cache[i][t];return r!==undefined?r:((c=this.regex[t])||(s="^"+n.map(t.split("."),function(n){var t=e&&"#"!==e?"\\.\\b":"\\b";return t+="#"===n?"[A-Z,a-z,0-9,\\.]*":"*"===n?"[A-Z,a-z,0-9]+":n,e=n,t}).join("")+"$",c=this.regex[t]=RegExp(s)),this.cache[i]=this.cache[i]||{},this.cache[i][t]=r=c.test(i),r)},reset:function(){this.cache={},this.regex={}}},u=function(t,i){h.configuration.resolver.compare(t.topic,i.topic)&&n.all(t.constraints,function(n){return n.call(t.context,i.data,i)})&&"function"==typeof t.callback&&t.callback.call(t.context,i.data,i)},a={addWireTap:function(n){var t=this;return t.wireTaps.push(n),function(){var i=t.wireTaps.indexOf(n);-1!==i&&t.wireTaps.splice(i,1)}},publish:function(t){return t.timeStamp=new Date,n.each(this.wireTaps,function(n){n(t.data,t)}),this.subscriptions[t.channel]&&n.each(this.subscriptions[t.channel],function(n){for(var i,s=0,c=n.length;c>s;)(i=n[s++])&&u(i,t)}),t},reset:function(){this.subscriptions&&(n.each(this.subscriptions,function(t){n.each(t,function(n){for(;n.length;)n.pop().unsubscribe()})}),this.subscriptions={})},subscribe:function(n){var t,i=this.subscriptions[n.channel];return i||(i=this.subscriptions[n.channel]={}),t=this.subscriptions[n.channel][n.topic],t||(t=this.subscriptions[n.channel][n.topic]=[]),t.push(n),n},subscriptions:{},wireTaps:[],unsubscribe:function(n){if(this.subscriptions[n.channel][n.topic])for(var t=this.subscriptions[n.channel][n.topic].length,i=0;t>i;i++)if(this.subscriptions[n.channel][n.topic][i]===n){this.subscriptions[n.channel][n.topic].splice(i,1);break}}};a.subscriptions[i]={};var h={configuration:{bus:a,resolver:o,DEFAULT_CHANNEL:t,SYSTEM_CHANNEL:i},ChannelDefinition:e,SubscriptionDefinition:r,channel:function(n){return new e(n)},subscribe:function(n){return new r(n.channel||t,n.topic,n.callback)},publish:function(n){return n.channel=n.channel||t,h.configuration.bus.publish(n)},addWireTap:function(n){return this.configuration.bus.addWireTap(n)},linkChannels:function(i,s){var c=[];return i=n.isArray(i)?i:[i],s=n.isArray(s)?s:[s],n.each(i,function(i){i.topic||"#",n.each(s,function(s){var e=s.channel||t;c.push(h.subscribe({channel:i.channel||t,topic:i.topic||"#",callback:function(t,i){var c=n.clone(i);c.topic=n.isFunction(s.topic)?s.topic(i.topic):s.topic||i.topic,c.channel=e,c.data=t,h.publish(c)}}))})}),c},utils:{getSubscribersFor:function(){var n=arguments[0],t=arguments[1];return 1===arguments.length&&(n=arguments[0].channel||h.configuration.DEFAULT_CHANNEL,t=arguments[0].topic),h.configuration.bus.subscriptions[n]&&h.configuration.bus.subscriptions[n].hasOwnProperty(t)?h.configuration.bus.subscriptions[n][t]:[]},reset:function(){h.configuration.bus.reset(),h.configuration.resolver.reset()}}};return h});