Only load iframe if URL variable exists

webroot/js/scripts/directives/IframeDirective.js

@@ -1,17 +1,42 @@
-angular.module('openITCOCKPIT').directive('iframeDirective', function($sce){
+/*
+ * Copyright (C) <2015-present>  <it-novum GmbH>
+ *
+ * This file is dual licensed
+ *
+ * 1.
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, version 3 of the License.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * 2.
+ *     If you purchased an openITCOCKPIT Enterprise Edition you can use this file
+ *     under the terms of the openITCOCKPIT Enterprise Edition license agreement.
+ *     License agreement and license key will be shipped with the order
+ *     confirmation.
+ */
+
+angular.module('openITCOCKPIT').directive('iframeDirective', function($sce) {
     return {
         restrict: 'E',
-        template: '<iframe src="{{trustedUrl}}" onload="this.height=(screen.height+15);" width="100%" frameborder="0"></iframe>',
+        template: '<iframe ng-if="trustedUrl" src="{{trustedUrl}}" onload="this.height=(screen.height+15);" width="100%" frameborder="0"></iframe>',
         scope: {
             'url': '='
         },
 
-        controller: function($scope){
+        controller: function($scope) {
 
         },
 
-        link: function($scope, element, attr){
-            $scope.$watch('url', function(){
+        link: function($scope, element, attr) {
+            $scope.$watch('url', function() {
                 $scope.trustedUrl = $sce.trustAsResourceUrl($scope.url);
             });
         }