Reset directive when reCaptcha is reset

Resolves #69 and #111. When the service triggers a reset, the directive associated with the widgetid being reset will clear the response on the model and mark the element as invalid (if validation is enabled).

Author: Evan Sharp

src/directive.js

@@ -60,6 +60,13 @@
 
                         scope.$on('$destroy', destroy);
 
+                        scope.$on('reCaptchaReset', function(resetWidgetId){
+                          if(widgetId === resetWidgetId){
+                            scope.response = "";
+                            validate();
+                          }
+                        })
+
                     });
 
                     // Remove this listener to avoid creating the widget more than once.

src/service.js

@@ -86,7 +86,7 @@
             provider.onLoadFunctionName = onLoadFunctionName;
         };
 
-        provider.$get = ['$window', '$q', function ($window, $q) {
+        provider.$get = ['$rootScope','$window', '$q', function ($rootScope, $window, $q) {
             var deferred = $q.defer(), promise = deferred.promise, recaptcha;
 
             $window.vcRecaptchaApiLoadedCallback = $window.vcRecaptchaApiLoadedCallback || [];
@@ -160,8 +160,8 @@
                     // $log.info('Reloading captcha');
                     recaptcha.reset(widgetId);
 
-                    // reCaptcha will call the same callback provided to the
-                    // create function once this new captcha is resolved.
+                    // Let everyone know this widget has been reset.
+                    $rootScope.$broadcast('reCaptchaReset', widgetId);
                 },
 
                 /**