[Library]: Fix directive click outside for server mode.

git-svn-id: https://svn.driver.research-infrastructures.eu/driver/dnet40/modules/uoa-services-library/trunk/ng-openaire-library/src/app@57325 d315682c-612b-4755-9ff5-7f18f6832af3

utils/modal/click-outside-or-esc.directive.ts

@@ -3,6 +3,7 @@ import {Observable} from 'rxjs/Observable';
 import 'rxjs/add/observable/fromEvent';
 import 'rxjs/add/operator/delay';
 import 'rxjs/add/operator/do';
+import {Subscriber} from "rxjs";
 
 @Directive({
   selector: '[click-outside-or-esc]'
@@ -10,8 +11,7 @@ import 'rxjs/add/operator/do';
 
 export class ClickOutsideOrEsc implements OnInit, OnDestroy {
   private listening: boolean;
-  private globalClick: any;
-  private escClick: any;
+  private subscriptions: any[] = [];
 
   @Output('clickOutside') clickOutside: EventEmitter<Object>;
 
@@ -21,15 +21,16 @@ export class ClickOutsideOrEsc implements OnInit, OnDestroy {
   }
 
   ngOnInit() {
-    this.globalClick = Observable
+    if(typeof document !== 'undefined') {
+      this.subscriptions.push(Observable
         .fromEvent(document, 'click')
         .delay(1)
         .do(() => {
           this.listening = true;
         }).subscribe((event: MouseEvent) => {
           this.onGlobalClick(event);
-      });
-    this.escClick = Observable
+        }));
+      this.subscriptions.push(Observable
         .fromEvent(document, 'keydown')
         .delay(1)
         .do(() => {
@@ -41,12 +42,17 @@ export class ClickOutsideOrEsc implements OnInit, OnDestroy {
               value: true
             });
           }
-      });
+        }));
+    }
   }
 
   ngOnDestroy() {
-    this.globalClick.unsubscribe();
-    this.escClick.unsubscribe();
+    if (this.subscriptions) {
+      this.subscriptions.forEach((subscription: Subscriber<any>) => {
+        subscription.unsubscribe();
+      });
+    }
+    this.subscriptions = [];
   }
 
   onGlobalClick(event: MouseEvent) {