add disable add note when note adding

src/frontend/app/notes/note-editor.component.html

 <mat-form-field appearance="outline" class="noteEditorContent">
     <textarea matInput placeholder="{{lang.addNote}}" [(ngModel)]="content"></textarea>
     <button *ngIf="addMode" matSuffix mat-icon-button title="{{lang.send}}" (click)="addNote()"
-        [disabled]="content.trim() == ''">
+        [disabled]="content.trim() == '' || loading">
         <mat-icon fontSet="far" fontIcon="fa-paper-plane fa-2x" style="color: #666;"></mat-icon>
     </button>
     <button matSuffix color="primary" mat-icon-button title="{{lang.noteTemplates}}" [matMenuTriggerFor]="menu"

src/frontend/app/notes/note-editor.component.ts

@@ -13,7 +13,7 @@ export class NoteEditorComponent implements AfterViewInit {
 
     lang: any = LANG;
     notes: any;
-    loading: boolean = true;
+    loading: boolean = false;
     templatesNote: any = [];
 
     content: string = '';
@@ -29,9 +29,11 @@ export class NoteEditorComponent implements AfterViewInit {
     }
 
     addNote() {
+        this.loading = true
         this.http.post("../../rest/res/" + this.resIds[0] + "/notes", { note_text: this.content })
             .subscribe((data: any) => {
                 this.refreshNotes.emit(this.resIds[0]);
+                this.loading = false;
             });
     }