start of dialog component

src/app/app.module.ts

@@ -30,6 +30,7 @@ import { environment } from '../environments/environment';
 import { ChartItemComponent } from './charts/chart-item/chart-item.component';
 import { ChartComponent } from './charts/chart/chart.component';
 import { FolderListComponent } from './lists/folder-list/folder-list.component';
+import { DialogComponent } from './dialog/dialog.component';
 
 @NgModule({
   declarations: [
@@ -42,6 +43,7 @@ import { FolderListComponent } from './lists/folder-list/folder-list.component';
     ChartComponent,
     ChartItemComponent,
     FolderListComponent,
+    DialogComponent,
   ],
   imports: [
     BrowserModule,

src/app/dialog/dialog.component.html

@@ -0,0 +1,4 @@
+<h1 mat-dialog-title>Error</h1>
+<div mat-dialog-content>
+    {{data.message}}
+</div>

src/app/dialog/dialog.component.spec.ts

@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { DialogComponent } from './dialog.component';
+
+describe('DialogComponent', () => {
+  let component: DialogComponent;
+  let fixture: ComponentFixture<DialogComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ DialogComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(DialogComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/dialog/dialog.component.ts

@@ -0,0 +1,21 @@
+import { Component, OnInit, Inject } from '@angular/core';
+import { MAT_DIALOG_DATA } from '@angular/material/dialog';
+import { MessageService } from '../services/message.service';
+
+export interface DialogData {
+  message: 'example message';
+}
+
+@Component({
+  selector: 'app-dialog',
+  templateUrl: './dialog.component.html',
+  styleUrls: ['./dialog.component.scss']
+})
+export class DialogComponent implements OnInit {
+
+  constructor(public messageService: MessageService) { }
+
+  ngOnInit(): void {
+  }
+
+}