quote-store.js

// Store
factory(QuoteStore, function(quoteService){

	var subscribers = [];
	var state;

  function QuoteStore(){}

  QuoteStore.prototype.getState = function(){
  	return state;
  }

  QuoteStore.prototype.dispatch = function(action, payload){
  	var store = this;
  	var state = this.getState();

  	// Update state
		state = quoteService[action](state, payload);
		
		return _.map(this.subscribers, function(fn){
			return fn(store);
		});
  };

  QuoteStore.prototype.suscribe = function(fn){
  	var store = this;
  	subscribers = subscribers.concat([fn]);

  	return function(){
			subscribers = _.filter(subscribers, function(fn){
				return fn !== fn;
			})
  	}
	};

	QuoteStore.prototype.startWith = function(data){
		state = data;

		return this;
	};

	return new QuoteStore();
});

// Service
QuoteService.prototype.addPromotion = function(state, payload){
	return state;
}

// Route Controller
directive('SaleFinceCtrl', function(quoteStore, quote){
	function vm(state){
		$scope.quote = state;
	}

	var unsubscribe = quoteStore.subscribe(vm);
	$scope.$on('$destroy', unsubscribe);

	// Init scope
	vm(QuoteStore.startWith(quote).getState());
})

// Directive
directive('QuoteEditorCtrl', function(quoteStore){

	return {
		scope: {
			resource: 'resource'
		},
		controllerAs: 'quote',
		controller: 'QuoteEditor'
	}
});

// Directive Controller
controller('QuoteEditorCtrl', function(quoteStore, $scope){

	function vm(){
		this.line = $scope.line;
		this.cmd = x;
	}

	// Actions
	this.addPromotion = function(cmd){
		QuoteStore.dispatch('addPromotion', cmd);
	}

  var unsubscribe = QuoteStore.subscribe(vm);
  $scope.$on('$destroy', unsubscribe);

  init();
});