Merge pull request #5044 from debrice/fast-watch-length-watcher

fix(#5041): Ensure length watchers transmit data

Author: PaulL1

src/js/core/directives/ui-grid.js

@@ -51,10 +51,10 @@
           }, dataWatchFunction) );
         } else {
           deregFunctions.push( $scope.$parent.$watch(function() { return $scope.uiGrid.data; }, dataWatchFunction) );
-          deregFunctions.push( $scope.$parent.$watch(function() { return $scope.uiGrid.data.length; }, dataWatchFunction) );
+          deregFunctions.push( $scope.$parent.$watch(function() { return $scope.uiGrid.data.length; }, function(){ dataWatchFunction($scope.uiGrid.data); }) );
         }
         deregFunctions.push( $scope.$parent.$watch(function() { return $scope.uiGrid.columnDefs; }, columnDefsWatchFunction) );
-        deregFunctions.push( $scope.$parent.$watch(function() { return $scope.uiGrid.columnDefs.length; }, columnDefsWatchFunction) );
+        deregFunctions.push( $scope.$parent.$watch(function() { return $scope.uiGrid.columnDefs.length; }, function(){ columnDefsWatchFunction($scope.uiGrid.columnDefs); }) );
       } else {
         if (angular.isString($scope.uiGrid.data)) {
           deregFunctions.push( $scope.$parent.$watchCollection($scope.uiGrid.data, dataWatchFunction) );