Cache + pubsub pattern

PubSub + Cache

angular.module('yoangApp')
    .service('PubSubService', function () {


    return {Initialize:Initialize};

    function Initialize (scope, Cache) {
        //Keep a dictionary to store the events and its subscriptions
        var publishEventMap = {};
        scope.Cache = Cache;

        //Register publish events
        scope.publish =  scope.publish || function () {
            var _thisScope = this,
                handlers,
                args,
                evnt;
            //Get event and rest of the data
            args = [].slice.call(arguments);
            evnt = args.splice(0, 1);
            scope.Cache.put(evnt, args);
            scope.Cache.addToHistory(evnt, args);
            //Loop though each handlerMap and invoke the handler
            angular.forEach((publishEventMap[evnt] || []), function (handlerMap) {
                handlerMap.handler.apply(_thisScope, args);
            });
        };

        //Register Subscribe events
        scope.subscribe = scope.subscribe || function (evnt, handler) {
            var _thisScope = this,
                handlers = (publishEventMap[evnt] = publishEventMap[evnt] || []);

            //Just keep the scopeid for reference later for cleanup
            handlers.push({ $id: _thisScope.$id, handler: handler });
            //When scope is destroyed remove the handlers that it has subscribed.
            _thisScope.$on('$destroy', function () {
                for(var i=0,l=handlers.length; i<l; i++){
                    if (handlers[i].$id === _thisScope.$id) {
                        handlers.splice(i, 1);
                        break;
                    }
                }
            });
        };
    }
}).run(function ($rootScope, PubSubService, Cache) {
    PubSubService.Initialize($rootScope, Cache);
});






angular.module('yoangApp')
  .factory('Cache', ['$cacheFactory', function($cacheFactory){
      var Cache = $cacheFactory('Cache');
      var history = {};
      Cache.addToHistory = function(nameSpace, val){
          history[nameSpace] = history[nameSpace] || [];
          history[nameSpace].push(val);
      };
      Cache.history = function(nameSpace){
          return !nameSpace ? history:history[nameSpace];
      };
      return Cache;
  }]);