OZG-6620 Bugfix signatur updates

alfa-client/libs/postfach/src/lib/postfach-mail-form/postfach-mail-form.component.html

@@ -40,7 +40,7 @@
     [formControlName]="formServiceClass.FIELD_MAIL_BODY"
     label="Text"
     class="message-editor mt-3"
-    [value]="signatur"
+    [value]="signatur$ | async"
     [autoFocus]="true"
     [required]="true"
   >

alfa-client/libs/postfach/src/lib/postfach-mail-form/postfach-mail-form.component.spec.ts

@@ -125,8 +125,9 @@ describe('PostfachMailFormComponent', () => {
         expect(component.patchPostfachNachricht).toHaveBeenCalled();
       });
     });
+  });
 
-    describe('on setting signatur', () => {
+  describe('ngAfterViewInit', () => {
     it('should call postfachService', () => {
       component.ngOnInit();
 
@@ -136,7 +137,8 @@ describe('PostfachMailFormComponent', () => {
     it('should set signatur', () => {
       component.ngOnInit();
 
-        expect(component.signatur).toBe(postfachSettings.signatur);
+      component.signatur$.subscribe((signatur: string) => {
+        expect(signatur).toBe(postfachSettings.signatur);
       });
     });
   });

alfa-client/libs/postfach/src/lib/postfach-mail-form/postfach-mail-form.component.ts

@@ -25,7 +25,7 @@ import { CommandResource } from '@alfa-client/command-shared';
 import { PostfachMailFormDialogData } from '@alfa-client/postfach-shared';
 import { StateResource, createEmptyStateResource, isNotNil } from '@alfa-client/tech-shared';
 import { DialogService } from '@alfa-client/ui';
-import { Component, Inject, OnInit } from '@angular/core';
+import { ChangeDetectorRef, Component, Inject, OnInit } from '@angular/core';
 import { MAT_DIALOG_DATA } from '@angular/material/dialog';
 import { Observable, of, tap } from 'rxjs';
 import { PostfachMailFormservice } from './postfach-mail.formservice';
@@ -39,8 +39,8 @@ import * as CommandUtil from '../../../../command-shared/src/lib/command.util';
   providers: [PostfachMailFormservice],
 })
 export class PostfachMailFormComponent implements OnInit {
+  public signatur$: Observable<string>;
   public readonly formServiceClass = PostfachMailFormservice;
-  public signatur = '';
 
   public sendInProgress$: Observable<StateResource<CommandResource>> = of(
     createEmptyStateResource<CommandResource>(),
@@ -50,16 +50,18 @@ export class PostfachMailFormComponent implements OnInit {
     private dialogService: DialogService,
     @Inject(MAT_DIALOG_DATA) public dialogData: PostfachMailFormDialogData,
     public formService: PostfachMailFormservice,
+    private changeDetectorRef: ChangeDetectorRef,
   ) {}
 
   ngOnInit(): void {
     if (isNotNil(this.dialogData.postfachNachricht)) {
       this.patchPostfachNachricht();
     }
+  }
 
-    this.formService.getSignatur().subscribe((signatur: string) => {
-      this.signatur = signatur;
-    });
+  ngAfterViewInit(): void {
+    this.signatur$ = this.formService.getSignatur();
+    this.changeDetectorRef.detectChanges();
   }
 
   patchPostfachNachricht(): void {

alfa-client/libs/postfach/src/lib/postfach-mail-form/postfach-mail.formservice.spec.ts

@@ -102,7 +102,7 @@ describe('PostfachMailFormservice', () => {
     });
 
     it('should return signatur', () => {
-      formService.getSignatur().subscribe((signatur) => {
+      formService.getSignatur().subscribe((signatur: string) => {
         expect(signatur).toBe(postfachSettings.signatur);
       });
     });