From c5c57f49432b5d6f4fd94c7db176011ab69fdbc7 Mon Sep 17 00:00:00 2001
From: Hemakumar <mudimix.hemakumar@intel.com>
Date: Thu, 16 Jun 2016 22:32:40 +0530
Subject: [PATCH] new implement: Implemented an event call after and before Csv
 file export, issue ID: #166

---
 src/ng-csv/directives/ng-csv.js    |  6 ++++--
 src/ng-csv/services/csv-service.js | 22 ++++++++++++++++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/src/ng-csv/directives/ng-csv.js b/src/ng-csv/directives/ng-csv.js
index bfb80f9..f63801d 100644
--- a/src/ng-csv/directives/ng-csv.js
+++ b/src/ng-csv/directives/ng-csv.js
@@ -5,7 +5,7 @@
  * Author: asafdav - https://github.com/asafdav
  */
 angular.module('ngCsv.directives').
-  directive('ngCsv', ['$parse', '$q', 'CSV', '$document', '$timeout', function ($parse, $q, CSV, $document, $timeout) {
+  directive('ngCsv', ['$parse', '$q', 'CSV', '$document', '$timeout', 'CSVBroadcast', function ($parse, $q, CSV, $document, $timeout, CSVBroadcast) {
     return {
       restrict: 'AC',
       scope: {
@@ -108,11 +108,13 @@ angular.module('ngCsv.directives').
         }
 
         element.bind('click', function (e) {
+		  CSVBroadcast.broadcastEvent("CSV.beforeDownload");
           scope.buildCSV().then(function (csv) {
             doClick();
+			CSVBroadcast.broadcastEvent("CSV.downloaded");
           });
           scope.$apply();
         });
       }
     };
-  }]);
+  }]);
\ No newline at end of file
diff --git a/src/ng-csv/services/csv-service.js b/src/ng-csv/services/csv-service.js
index 3adade6..dae0c13 100644
--- a/src/ng-csv/services/csv-service.js
+++ b/src/ng-csv/services/csv-service.js
@@ -167,3 +167,25 @@ angular.module('ngCsv.services').
 
 
   }]);
+  
+  angular.module('ngCsv.services').
+  service('CSVBroadcast', function ($rootScope) {
+	/**
+     * Helper function to calling an event after export
+     * Function calls $rootScope.$broadcast(@eventName)
+     * @param eventName
+     */
+	this.broadcastEvent = function(eventName){
+		$rootScope.$broadcast(eventName); 
+	}
+	 
+	/**
+     * Helper function to calling an event after export
+     * Function invoked when event fired on $rootScope.$broadcast(@intput)
+	 * callback function executed on event
+     * @param eventName
+     */
+	this.listenEvent = function(eventName, callback) {
+		$rootScope.$on(eventName,callback);
+	}
+});