feat: TTA-193 add preload page

src/app/app.component.html

@@ -1 +1,3 @@
+<app-page-loader></app-page-loader>
 <router-outlet></router-outlet>
+<button (click)="pageLoadTest()">Page LOAD</button>

src/app/app.module.ts

@@ -95,6 +95,7 @@ import { SearchUserComponent } from './modules/shared/components/search-user/sea
 import { TimeRangeCustomComponent } from './modules/reports/components/time-range-custom/time-range-custom.component';
 import { TimeRangeHeaderComponent } from './modules/reports/components/time-range-custom/time-range-header/time-range-header.component';
 import { TimeRangeOptionsComponent } from './modules/reports/components/time-range-custom/time-range-options/time-range-options.component';
+import { PageLoaderComponent } from './page-loader/page-loader.component';
 
 const maskConfig: Partial<IConfig> = {
   validation: false,
@@ -154,6 +155,7 @@ const maskConfig: Partial<IConfig> = {
     TimeRangeCustomComponent,
     TimeRangeHeaderComponent,
     TimeRangeOptionsComponent,
+    PageLoaderComponent,
   ],
   imports: [
     NgxMaskModule.forRoot(maskConfig),

src/app/page-loader.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { PageLoaderService } from './page-loader.service';
+
+describe('PageLoaderService', () => {
+  let service: PageLoaderService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(PageLoaderService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

src/app/page-loader.service.ts

@@ -0,0 +1,46 @@
+import { Injectable } from '@angular/core';
+import { BehaviorSubject, Subject } from 'rxjs';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class PageLoaderService {
+
+  constructor() { }
+
+  private loading$: Subject<boolean> = new BehaviorSubject(false);
+  private message$: Subject<string> = new BehaviorSubject(null);
+  private progressValue$: Subject<number> = new BehaviorSubject(null);
+
+  show(message: string = null, progressValue: number = null) {
+    this.loading$.next(true);
+    this.message$.next(message);
+    this.progressValue$.next(progressValue);
+  }
+
+  hide() {
+    this.loading$.next(false);
+    this.message$.next(null);
+    this.progressValue$.next(null);
+  }
+
+  get state() {
+    return this.loading$.asObservable();
+  }
+
+  get message() {
+    return this.message$.asObservable();
+  }
+
+  setMessage(message: string) {
+    this.message$.next(message);
+  }
+
+  get progressValue() {
+    return this.progressValue$.asObservable();
+  }
+
+  setProgressValue(progressValue: number) {
+    this.progressValue$.next(progressValue);
+  }
+}

src/app/page-loader/page-loader.component.css

@@ -0,0 +1,25 @@
+.loader-container {
+    position: absolute;
+    top: 0;
+    width: 100%;
+    height: 100%;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    background-color: #000000aa;
+    pointer-events: none;
+}
+.loader-message-container {
+    color: whitesmoke;
+    font-size: 1.5rem;
+}
+.loader-progress-container {
+    padding: 5px;
+    min-height: 1.3rem;
+    width: 100%;
+    background-color: black;
+}
+.progress-bar {
+    min-height: 1rem;
+    background-color: orange;
+}

src/app/page-loader/page-loader.component.html

@@ -0,0 +1,8 @@
+<div *ngIf="loading" class="loader-container">
+    <div *ngIf="!!message">
+        <div class="loader-message-container">{{ message }}></div>
+        <div *ngIf="!!progressValue" class="loader-progress-container">
+            <div class="progress-bar" [style.width]="progressValueStyle"></div>
+        </div>
+    </div>
+</div>

src/app/page-loader/page-loader.component.spec.ts

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

src/app/page-loader/page-loader.component.ts

@@ -0,0 +1,50 @@
+import { Component, OnInit } from '@angular/core';
+import { takeWhile } from 'rxjs/operators';
+import { PageLoaderService } from '../page-loader.service';
+
+@Component({
+  selector: 'app-page-loader',
+  templateUrl: './page-loader.component.html',
+  styleUrls: ['./page-loader.component.css']
+})
+export class PageLoaderComponent implements OnInit {
+
+  constructor(private pageLoaderService: PageLoaderService) { }
+
+  loading: boolean;
+  message: string;
+  progressValue: number;
+  progressValueStyle: string;
+  private _subscribed: boolean = true;
+
+  ngOnInit(): void {
+  this.subscribe();
+  }
+
+  private subscribe() {
+  this.pageLoaderService.state
+    .pipe(takeWhile(() => this._subscribed))
+    .subscribe(loading => {
+    this.loading = loading;
+      });
+  this.pageLoaderService.message
+    .pipe(takeWhile(() => this._subscribed))
+    .subscribe(message => {
+    if (!!message) {
+    this.message = message;
+  }
+    });
+  this.pageLoaderService.progressValue
+      .pipe(takeWhile(() => this._subscribed))
+      .subscribe(progressValue => {
+    if (!!progressValue) {
+      this.progressValue = progressValue;
+      this.progressValueStyle = `${progressValue}%`;
+  }
+    });
+  }
+  ngOnDestroy() {
+    this._subscribed = false;
+  }
+
+}