added a print service

printservice sets printlock from subject-pair-dialog.component.ts
printlock is read from main.component.html.
This needs a timeout in the print function call, hoping to resolve that still.

src/main/webapp/app/entities/project/project-detail.component.html

@@ -1,4 +1,4 @@
-<div *ngIf="project$ | async as project" class="not-print">
+<div *ngIf="project$ | async as project">
     <h2>
         <span>
             <span [translate]="'managementPortalApp.project.detail.title'"></span>:

src/main/webapp/app/layouts/footer/footer.component.html

@@ -1,3 +1,3 @@
-<div class="footer not-print" style="align-content: center">
+<div class="footer" style="align-content: center">
     <p [innerHTML]="'footer' | translate"></p>
 </div>

src/main/webapp/app/layouts/main/main.component.html

@@ -1,11 +1,13 @@
+<div [ngClass]="(this.isPrintLocked$ | async) ? 'not-print' : ''">
 <jhi-page-ribbon></jhi-page-ribbon>
-<div>
-    <router-outlet name="navbar"></router-outlet>
-</div>
-<div class="container-fluid">
-    <div class="card jh-card">
-        <router-outlet></router-outlet>
-        <router-outlet name="popup"></router-outlet>
+    <div>
+        <router-outlet name="navbar"></router-outlet>
+    </div>
+    <div class="container-fluid">
+        <div class="card jh-card">
+            <router-outlet></router-outlet>
+            <router-outlet name="popup"></router-outlet>
+        </div>
+        <jhi-footer></jhi-footer>
     </div>
-    <jhi-footer></jhi-footer>
 </div>

src/main/webapp/app/layouts/main/main.component.ts

@@ -1,7 +1,9 @@
 import { Component, OnInit } from '@angular/core';
 import { ActivatedRouteSnapshot, NavigationEnd, Router } from '@angular/router';
+import { Observable } from 'rxjs';
 
 import { JhiLanguageHelper } from '../../shared';
+import {PrintService} from "../../shared/util/print.service";
 
 @Component({
     selector: 'jhi-main',
@@ -12,15 +14,20 @@ export class JhiMainComponent implements OnInit {
 
     constructor(
             private jhiLanguageHelper: JhiLanguageHelper,
+            private printService: PrintService,
             private router: Router,
     ) {
     }
 
+    public isPrintLocked$: Observable<boolean>;
+
     ngOnInit() {
         this.router.events.subscribe((event) => {
             if (event instanceof NavigationEnd) {
                 this.jhiLanguageHelper.updateTitle();
             }
         });
+       this.isPrintLocked$ = this.printService.isPrintLocked$;
+       //this.isPrintLocked$.subscribe(setTo => console.log("now we updated main.html"));
     }
 }

src/main/webapp/app/shared/subject/subject-pair-dialog.component.html

@@ -1,6 +1,6 @@
 <form name="pairForm" role="form" novalidate #editForm="ngForm">
 
-    <div class="modal-header not-print">
+    <div class="modal-header">
         <h4 class="modal-title" id="mySubjectLabel"
             [translate]="'managementPortalApp.subject.home.pairAppLabel'">
         </h4>

src/main/webapp/app/shared/subject/subject-pair-dialog.component.ts

@@ -14,11 +14,13 @@ import { SubjectPopupService } from './subject-popup.service';
 import { Subject } from './subject.model';
 import { ObservablePopupComponent } from '../util/observable-popup.component';
 import { map, switchMap, tap } from 'rxjs/operators';
+import { JhiMainComponent } from '../../layouts/main/main.component';
+import { PrintService } from '../util/print.service';
 
 @Component({
     selector: 'jhi-subject-pair-dialog',
     templateUrl: './subject-pair-dialog.component.html',
-    styleUrls: ['subject-pair-dialog.component.scss', '../../../content/scss/_print.scss'],
+    styleUrls: ['subject-pair-dialog.component.scss'],
 })
 export class SubjectPairDialogComponent implements OnInit, OnDestroy {
     readonly authorities: string[];
@@ -35,12 +37,24 @@ export class SubjectPairDialogComponent implements OnInit, OnDestroy {
                 private oauthClientService: OAuthClientService,
                 private pairInfoService: OAuthClientPairInfoService,
                 private datePipe: DatePipe,
+                private printService: PrintService,
                 @Inject(DOCUMENT) private doc) {
         this.authorities = ['ROLE_USER', 'ROLE_SYS_ADMIN'];
     }
-    exportHtmlToPDF() {
-        window.print();
+    async exportHtmlToPDF() {
+        // let pp: PrintService = this.printService;
+        // window.onafterprint = function(){
+        //     console.log("Printing completed...");
+        //     //pp.togglePrintLock().then(_ => {})
+        // }
+
+        this.printService.setPrintLockTo(true);
+        await new Promise(r => setTimeout(r, 0.000000000000000000000000000000000000000000000000000001));
+        window.print()
+        this.printService.setPrintLockTo(false);
+
     }
+
     ngOnInit() {
         if (this.subject.project && this.subject.project.persistentTokenTimeout) {
             this.allowPersistentToken = true;

src/main/webapp/app/shared/subject/subject.component.html

@@ -1,4 +1,4 @@
-<div class="subject-wrapper not-print" xmlns="http://www.w3.org/1999/html">
+<div class="subject-wrapper" xmlns="http://www.w3.org/1999/html">
     <div class="subject-filter">
         <div class="subject-filter-header">
             <h5 [translate]="'managementPortalApp.subject.filter.title'"></h5>

src/main/webapp/app/shared/util/print.service.ts

@@ -0,0 +1,19 @@
+import { Injectable } from '@angular/core';
+import { BehaviorSubject } from "rxjs";
+
+@Injectable({ providedIn: 'root' })
+export class PrintService {
+
+    public isPrintLocked$:  BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);
+
+    constructor(
+    ) {
+        this.isPrintLocked$.subscribe(isPrintLocked => {
+            //console.log(`isPrintlocked: ${isPrintLocked}`)
+        })
+    }
+
+    setPrintLockTo(setTo: boolean) {
+        this.isPrintLocked$.next(setTo)
+    }
+}

src/main/webapp/content/scss/_print.scss

@@ -1,5 +1,3 @@
-
-
 @media print {
 
     * {