Merge pull request #888 from qultoltd/#885-media-viewer

#885 media viewer
2025-10-07 01:54:15 +00:00 · 2021-03-31 12:17:15 -05:00
parent ea3886bbfa ff8ff7f496
commit 4475d59bbf
29 changed files with 865 additions and 12 deletions
--- a/package.json
+++ b/package.json
@@ -122,7 +122,8 @@
    "sortablejs": "1.10.1",
    "tslib": "^2.0.0",
    "webfontloader": "1.6.28",
-    "zone.js": "^0.10.3"
+    "zone.js": "^0.10.3",
+    "@kolkov/ngx-gallery": "^1.2.3"
  },
  "devDependencies": {
    "@angular-builders/custom-webpack": "10.0.1",
--- a/src/app/+item-page/item-page.module.ts
+++ b/src/app/+item-page/item-page.module.ts
@@ -27,6 +27,10 @@ import { JournalEntitiesModule } from '../entity-groups/journal-entities/journal
 import { ResearchEntitiesModule } from '../entity-groups/research-entities/research-entities.module';
 import { ThemedItemPageComponent } from './simple/themed-item-page.component';
 import { ThemedFullItemPageComponent } from './full/themed-full-item-page.component';
+import { MediaViewerComponent } from './media-viewer/media-viewer.component';
+import { MediaViewerVideoComponent } from './media-viewer/media-viewer-video/media-viewer-video.component';
+import { MediaViewerImageComponent } from './media-viewer/media-viewer-image/media-viewer-image.component';
+import { NgxGalleryModule } from '@kolkov/ngx-gallery';

 const ENTRY_COMPONENTS = [
  // put only entry components that use custom decorator
@@ -54,6 +58,9 @@ const DECLARATIONS = [
  ItemComponent,
  UploadBitstreamComponent,
  AbstractIncrementalListComponent,
+  MediaViewerComponent,
+  MediaViewerVideoComponent,
+  MediaViewerImageComponent
 ];

@NgModule({
@@ -64,7 +71,8 @@ const DECLARATIONS = [
    EditItemPageModule,
    StatisticsModule.forRoot(),
    JournalEntitiesModule.withEntryComponents(),
-    ResearchEntitiesModule.withEntryComponents()
+    ResearchEntitiesModule.withEntryComponents(),
+     NgxGalleryModule,
  ],
  declarations: [
    ...DECLARATIONS
--- a/src/app/+item-page/media-viewer/media-viewer-image/media-viewer-image.component.html
+++ b/src/app/+item-page/media-viewer/media-viewer-image/media-viewer-image.component.html
@@ -0,0 +1,7 @@
+<div [class.change-gallery]="isAuthenticated$ | async">
+  <ngx-gallery
+    class="ngx-gallery"
+    [options]="galleryOptions"
+    [images]="galleryImages"
+  ></ngx-gallery>
+</div>
--- a/src/app/+item-page/media-viewer/media-viewer-image/media-viewer-image.component.scss
+++ b/src/app/+item-page/media-viewer/media-viewer-image/media-viewer-image.component.scss
@@ -0,0 +1,6 @@
+.ngx-gallery {
+  display: inline-block;
+  margin-bottom: 20px;
+  width: 340px !important;
+  height: 279px !important;
+}
--- a/src/app/+item-page/media-viewer/media-viewer-image/media-viewer-image.component.spec.ts
+++ b/src/app/+item-page/media-viewer/media-viewer-image/media-viewer-image.component.spec.ts
@@ -0,0 +1,89 @@
+import { NO_ERRORS_SCHEMA } from '@angular/core';
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { NgxGalleryOptions } from '@kolkov/ngx-gallery';
+import { Bitstream } from '../../../core/shared/bitstream.model';
+import { MediaViewerItem } from '../../../core/shared/media-viewer-item.model';
+import { MockBitstreamFormat1 } from '../../../shared/mocks/item.mock';
+
+import { MediaViewerImageComponent } from './media-viewer-image.component';
+
+import { of as observableOf } from 'rxjs';
+import { AuthService } from '../../../core/auth/auth.service';
+
+describe('MediaViewerImageComponent', () => {
+  let component: MediaViewerImageComponent;
+  let fixture: ComponentFixture<MediaViewerImageComponent>;
+
+  const authService = jasmine.createSpyObj('authService', {
+    isAuthenticated: observableOf(false)
+  });
+
+  const mockBitstream: Bitstream = Object.assign(new Bitstream(), {
+    sizeBytes: 10201,
+    content:
+      'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/cf9b0c8e-a1eb-4b65-afd0-567366448713/content',
+    format: observableOf(MockBitstreamFormat1),
+    bundleName: 'ORIGINAL',
+    _links: {
+      self: {
+        href:
+          'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/cf9b0c8e-a1eb-4b65-afd0-567366448713',
+      },
+      content: {
+        href:
+          'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/cf9b0c8e-a1eb-4b65-afd0-567366448713/content',
+      },
+    },
+    id: 'cf9b0c8e-a1eb-4b65-afd0-567366448713',
+    uuid: 'cf9b0c8e-a1eb-4b65-afd0-567366448713',
+    type: 'bitstream',
+    metadata: {
+      'dc.title': [
+        {
+          language: null,
+          value: 'test_word.docx',
+        },
+      ],
+    },
+  });
+
+  const mockMediaViewerItems: MediaViewerItem[] = Object.assign(
+    new Array<MediaViewerItem>(),
+    [
+      { bitstream: mockBitstream, format: 'image', thumbnail: null },
+      { bitstream: mockBitstream, format: 'image', thumbnail: null },
+    ]
+  );
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports:[],
+      declarations: [MediaViewerImageComponent],
+      schemas: [NO_ERRORS_SCHEMA],
+      providers: [
+        { provide: AuthService, useValue: authService },
+      ],
+    }).compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(MediaViewerImageComponent);
+    component = fixture.componentInstance;
+    component.galleryOptions = [new NgxGalleryOptions({})];
+    component.galleryImages = component.convertToGalleryImage(
+      mockMediaViewerItems
+    );
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should contain a gallery options', () => {
+    expect(component.galleryOptions.length).toBeGreaterThan(0);
+  });
+
+  it('should contain an image array', () => {
+    expect(component.galleryImages.length).toBeGreaterThan(0);
+  });
+});
--- a/src/app/+item-page/media-viewer/media-viewer-image/media-viewer-image.component.ts
+++ b/src/app/+item-page/media-viewer/media-viewer-image/media-viewer-image.component.ts
@@ -0,0 +1,88 @@
+import { Component, Input, OnInit } from '@angular/core';
+import { NgxGalleryImage, NgxGalleryOptions } from '@kolkov/ngx-gallery';
+import { MediaViewerItem } from '../../../core/shared/media-viewer-item.model';
+import { NgxGalleryAnimation } from '@kolkov/ngx-gallery';
+import { Observable } from 'rxjs';
+import { AuthService } from '../../../core/auth/auth.service';
+
+/**
+ * This componenet render an image gallery for the image viewer
+ */
+@Component({
+  selector: 'ds-media-viewer-image',
+  templateUrl: './media-viewer-image.component.html',
+  styleUrls: ['./media-viewer-image.component.scss'],
+})
+export class MediaViewerImageComponent implements OnInit {
+  @Input() images: MediaViewerItem[];
+  @Input() preview?: boolean;
+  @Input() image?: string;
+
+  loggedin: boolean;
+
+  galleryOptions: NgxGalleryOptions[];
+  galleryImages: NgxGalleryImage[];
+
+  /**
+   * Whether or not the current user is authenticated
+   */
+  isAuthenticated$: Observable<boolean>;
+
+  constructor(private authService: AuthService) {}
+
+  /**
+   * Thi method sets up the gallery settings and data
+   */
+  ngOnInit(): void {
+    this.isAuthenticated$ = this.authService.isAuthenticated();
+    this.galleryOptions = [
+      {
+        preview: this.preview !== undefined ? this.preview : true,
+        image: true,
+        imageSize: 'contain',
+        thumbnails: false,
+        imageArrows: false,
+        startIndex: 0,
+        imageAnimation: NgxGalleryAnimation.Slide,
+        previewCloseOnEsc: true,
+        previewZoom: true,
+        previewRotate: true,
+        previewFullscreen: true,
+      },
+    ];
+
+    if (this.image) {
+      this.galleryImages = [
+        {
+          small: this.image,
+          medium: this.image,
+          big: this.image,
+        },
+      ];
+    } else {
+      this.galleryImages = this.convertToGalleryImage(this.images);
+    }
+  }
+
+  /**
+   * This method convert an array of MediaViewerItem into NgxGalleryImage array
+   * @param medias input NgxGalleryImage array
+   */
+  convertToGalleryImage(medias: MediaViewerItem[]): NgxGalleryImage[] {
+    const mappadImages = [];
+    for (const image of medias) {
+      if (image.format === 'image') {
+        mappadImages.push({
+          small: image.thumbnail
+            ? image.thumbnail
+            : './assets/images/replacement_image.svg',
+          medium: image.thumbnail
+            ? image.thumbnail
+            : './assets/images/replacement_image.svg',
+          big: image.bitstream._links.content.href,
+        });
+      }
+    }
+    return mappadImages;
+  }
+}
--- a/src/app/+item-page/media-viewer/media-viewer-video/media-viewer-video.component.html
+++ b/src/app/+item-page/media-viewer/media-viewer-video/media-viewer-video.component.html
@@ -0,0 +1,47 @@
+<video
+  #media
+  [src]="filteredMedias[currentIndex].bitstream._links.content.href"
+  id="singleVideo"
+  [poster]="
+    filteredMedias[currentIndex].thumbnail ||
+    replacements[filteredMedias[currentIndex].format]
+  "
+  preload="none"
+  controls
+></video>
+<div class="buttons" *ngIf="filteredMedias?.length > 1">
+  <button
+    class="btn btn-primary previous"
+    [disabled]="currentIndex === 0"
+    (click)="prevMedia()"
+  >
+    {{ "media-viewer.previous" | translate }}
+  </button>
+
+  <button
+    class="btn btn-primary next"
+    [disabled]="currentIndex === filteredMedias.length - 1"
+    (click)="nextMedia()"
+  >
+    {{ "media-viewer.next" | translate }}
+  </button>
+  <div ngbDropdown class="d-inline-block">
+    <button
+      class="btn btn-outline-primary playlist"
+      id="dropdownBasic1"
+      ngbDropdownToggle
+    >
+      {{ "media-viewer.playlist" | translate }}
+    </button>
+    <div ngbDropdownMenu aria-labelledby="dropdownBasic1">
+      <button
+        ngbDropdownItem
+        *ngFor="let item of filteredMedias; index as indexOfelement"
+        class="list-element"
+        (click)="selectedMedia(indexOfelement)"
+      >
+        {{ item.bitstream.name }}
+      </button>
+    </div>
+  </div>
+</div>
--- a/src/app/+item-page/media-viewer/media-viewer-video/media-viewer-video.component.scss
+++ b/src/app/+item-page/media-viewer/media-viewer-video/media-viewer-video.component.scss
@@ -0,0 +1,4 @@
+video {
+  width: 340px;
+  height: 279px;
+}
--- a/src/app/+item-page/media-viewer/media-viewer-video/media-viewer-video.component.spec.ts
+++ b/src/app/+item-page/media-viewer/media-viewer-video/media-viewer-video.component.spec.ts
@@ -0,0 +1,145 @@
+import { NO_ERRORS_SCHEMA } from '@angular/core';
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
+import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
+import { of as observableOf } from 'rxjs';
+import { Bitstream } from '../../../core/shared/bitstream.model';
+import { MediaViewerItem } from '../../../core/shared/media-viewer-item.model';
+import { TranslateLoaderMock } from '../../../shared/mocks/translate-loader.mock';
+import { FileSizePipe } from '../../../shared/utils/file-size-pipe';
+import { VarDirective } from '../../../shared/utils/var.directive';
+import { MetadataFieldWrapperComponent } from '../../field-components/metadata-field-wrapper/metadata-field-wrapper.component';
+import { MockBitstreamFormat1 } from '../../../shared/mocks/item.mock';
+import { MediaViewerVideoComponent } from './media-viewer-video.component';
+import { By } from '@angular/platform-browser';
+
+describe('MediaViewerVideoComponent', () => {
+  let component: MediaViewerVideoComponent;
+  let fixture: ComponentFixture<MediaViewerVideoComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        TranslateModule.forRoot({
+          loader: {
+            provide: TranslateLoader,
+            useClass: TranslateLoaderMock,
+          },
+        }),
+        BrowserAnimationsModule,
+      ],
+      declarations: [
+        MediaViewerVideoComponent,
+        VarDirective,
+        FileSizePipe,
+        MetadataFieldWrapperComponent,
+      ],
+      schemas: [NO_ERRORS_SCHEMA],
+    }).compileComponents();
+  }));
+
+  const mockBitstream: Bitstream = Object.assign(new Bitstream(), {
+    sizeBytes: 10201,
+    content:
+      'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/cf9b0c8e-a1eb-4b65-afd0-567366448713/content',
+    format: observableOf(MockBitstreamFormat1),
+    bundleName: 'ORIGINAL',
+    _links: {
+      self: {
+        href:
+          'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/cf9b0c8e-a1eb-4b65-afd0-567366448713',
+      },
+      content: {
+        href:
+          'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/cf9b0c8e-a1eb-4b65-afd0-567366448713/content',
+      },
+    },
+    id: 'cf9b0c8e-a1eb-4b65-afd0-567366448713',
+    uuid: 'cf9b0c8e-a1eb-4b65-afd0-567366448713',
+    type: 'bitstream',
+    metadata: {
+      'dc.title': [
+        {
+          language: null,
+          value: 'test_word.docx',
+        },
+      ],
+    },
+  });
+
+  const mockMediaViewerItems: MediaViewerItem[] = Object.assign(
+    new Array<MediaViewerItem>(),
+    [
+      { bitstream: mockBitstream, format: 'video', thumbnail: null },
+      { bitstream: mockBitstream, format: 'video', thumbnail: null },
+    ]
+  );
+  const mockMediaViewerItem: MediaViewerItem[] = Object.assign(
+    new Array<MediaViewerItem>(),
+    [{ bitstream: mockBitstream, format: 'video', thumbnail: null }]
+  );
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(MediaViewerVideoComponent);
+    component = fixture.componentInstance;
+    component.medias = mockMediaViewerItem;
+    component.filteredMedias = mockMediaViewerItem;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  describe('should show controller buttons when the having mode then one video', () => {
+    beforeEach(() => {
+      component.medias = mockMediaViewerItems;
+      component.filteredMedias = mockMediaViewerItems;
+      fixture.detectChanges();
+    });
+
+    it('should show buttons', () => {
+      const controllerButtons = fixture.debugElement.query(By.css('.buttons'));
+      expect(controllerButtons).toBeTruthy();
+    });
+
+    describe('when the "Next" button is clicked', () => {
+      beforeEach(() => {
+        component.currentIndex = 0;
+        fixture.detectChanges();
+      });
+
+      it('should increase the index', () => {
+        const viewMore = fixture.debugElement.query(By.css('.next'));
+        viewMore.triggerEventHandler('click', null);
+        expect(component.currentIndex).toBe(1);
+      });
+    });
+
+    describe('when the "Previous" button is clicked', () => {
+      beforeEach(() => {
+        component.currentIndex = 1;
+        fixture.detectChanges();
+      });
+
+      it('should decrease the index', () => {
+        const viewMore = fixture.debugElement.query(By.css('.previous'));
+        viewMore.triggerEventHandler('click', null);
+        expect(component.currentIndex).toBe(0);
+      });
+    });
+
+    describe('when the "Playlist element" button is clicked', () => {
+      beforeEach(() => {
+        component.isCollapsed = true;
+        fixture.detectChanges();
+      });
+
+      it('should set the the index with the selected one', () => {
+        const viewMore = fixture.debugElement.query(By.css('.list-element'));
+        viewMore.triggerEventHandler('click', null);
+        expect(component.currentIndex).toBe(0);
+      });
+    });
+  });
+});
--- a/src/app/+item-page/media-viewer/media-viewer-video/media-viewer-video.component.ts
+++ b/src/app/+item-page/media-viewer/media-viewer-video/media-viewer-video.component.ts
@@ -0,0 +1,55 @@
+import { Component, Input, OnInit } from '@angular/core';
+import { MediaViewerItem } from '../../../core/shared/media-viewer-item.model';
+
+/**
+ * This componenet renders a video viewer and playlist for the media viewer
+ */
+@Component({
+  selector: 'ds-media-viewer-video',
+  templateUrl: './media-viewer-video.component.html',
+  styleUrls: ['./media-viewer-video.component.scss'],
+})
+export class MediaViewerVideoComponent implements OnInit {
+  @Input() medias: MediaViewerItem[];
+
+  filteredMedias: MediaViewerItem[];
+
+  isCollapsed: boolean;
+  currentIndex = 0;
+
+  replacements = {
+    video: './assets/images/replacement_video.svg',
+    audio: './assets/images/replacement_audio.svg',
+  };
+
+  replacementThumbnail: string;
+
+  ngOnInit() {
+    this.isCollapsed = false;
+    this.filteredMedias = this.medias.filter(
+      (media) => media.format === 'audio' || media.format === 'video'
+    );
+  }
+
+  /**
+   * This method sets the reviced index into currentIndex
+   * @param index Selected index
+   */
+  selectedMedia(index: number) {
+    this.currentIndex = index;
+  }
+
+  /**
+   * This method increade the number of the currentIndex
+   */
+  nextMedia() {
+    this.currentIndex++;
+  }
+
+  /**
+   * This method decrese the number of the currentIndex
+   */
+  prevMedia() {
+    this.currentIndex--;
+  }
+}
--- a/src/app/+item-page/media-viewer/media-viewer.component.html
+++ b/src/app/+item-page/media-viewer/media-viewer.component.html
@@ -0,0 +1,36 @@
+<ng-container *ngVar="mediaList$ | async as mediaList">
+  <ds-loading
+    *ngIf="isLoading"
+    message="{{ 'loading.default' | translate }}"
+    [showMessage]="false"
+  ></ds-loading>
+  <div class="media-viewer" *ngIf="!isLoading">
+    <ng-container *ngIf="mediaList.length > 0">
+      <ng-container *ngIf="videoOptions">
+        <ng-container
+          *ngIf="
+            mediaList[0]?.format === 'video' || mediaList[0]?.format === 'audio'
+          "
+        >
+          <ds-media-viewer-video [medias]="mediaList"></ds-media-viewer-video>
+        </ng-container>
+      </ng-container>
+        <ng-container *ngIf="mediaList[0]?.format === 'image'">
+          <ds-media-viewer-image [images]="mediaList"></ds-media-viewer-image>
+        </ng-container>
+    </ng-container>
+    <ng-container
+      *ngIf="
+        ((mediaList[0]?.format !== 'image') &&
+          (!videoOptions || mediaList[0]?.format !== 'video') &&
+          (!videoOptions || mediaList[0]?.format !== 'audio')) ||
+        mediaList.length === 0
+      "
+    >
+      <ds-media-viewer-image
+        [image]="mediaList[0]?.thumbnail || thumbnailPlaceholder"
+        [preview]="false"
+      ></ds-media-viewer-image>
+    </ng-container>
+  </div>
+</ng-container>
--- a/src/app/+item-page/media-viewer/media-viewer.component.scss
+++ b/src/app/+item-page/media-viewer/media-viewer.component.scss
@@ -0,0 +1 @@
+
--- a/src/app/+item-page/media-viewer/media-viewer.component.spec.ts
+++ b/src/app/+item-page/media-viewer/media-viewer.component.spec.ts
@@ -0,0 +1,143 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { Bitstream } from '../../core/shared/bitstream.model';
+import { createSuccessfulRemoteDataObject$ } from '../../shared/remote-data.utils';
+import { createPaginatedList } from '../../shared/testing/utils.test';
+import { of as observableOf } from 'rxjs';
+import { By } from '@angular/platform-browser';
+import { MediaViewerComponent } from './media-viewer.component';
+import { MockBitstreamFormat1 } from '../../shared/mocks/item.mock';
+import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
+import { TranslateLoaderMock } from '../../shared/mocks/translate-loader.mock';
+import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
+import { BitstreamDataService } from '../../core/data/bitstream-data.service';
+import { NO_ERRORS_SCHEMA } from '@angular/core';
+import { MediaViewerItem } from '../../core/shared/media-viewer-item.model';
+import { VarDirective } from '../../shared/utils/var.directive';
+import { MetadataFieldWrapperComponent } from '../field-components/metadata-field-wrapper/metadata-field-wrapper.component';
+import { FileSizePipe } from '../../shared/utils/file-size-pipe';
+
+describe('MediaViewerComponent', () => {
+  let comp: MediaViewerComponent;
+  let fixture: ComponentFixture<MediaViewerComponent>;
+
+  const mockBitstream: Bitstream = Object.assign(new Bitstream(), {
+    sizeBytes: 10201,
+    content:
+      'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/cf9b0c8e-a1eb-4b65-afd0-567366448713/content',
+    format: observableOf(MockBitstreamFormat1),
+    bundleName: 'ORIGINAL',
+    _links: {
+      self: {
+        href:
+          'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/cf9b0c8e-a1eb-4b65-afd0-567366448713',
+      },
+      content: {
+        href:
+          'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/cf9b0c8e-a1eb-4b65-afd0-567366448713/content',
+      },
+    },
+    id: 'cf9b0c8e-a1eb-4b65-afd0-567366448713',
+    uuid: 'cf9b0c8e-a1eb-4b65-afd0-567366448713',
+    type: 'bitstream',
+    metadata: {
+      'dc.title': [
+        {
+          language: null,
+          value: 'test_word.docx',
+        },
+      ],
+    },
+  });
+
+  const bitstreamDataService = jasmine.createSpyObj('bitstreamDataService', {
+    findAllByItemAndBundleName: createSuccessfulRemoteDataObject$(
+      createPaginatedList([mockBitstream])
+    ),
+  });
+
+  const mockMediaViewerItem: MediaViewerItem = Object.assign(
+    new MediaViewerItem(),
+    { bitstream: mockBitstream, format: 'image', thumbnail: null }
+  );
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        TranslateModule.forRoot({
+          loader: {
+            provide: TranslateLoader,
+            useClass: TranslateLoaderMock,
+          },
+        }),
+        BrowserAnimationsModule,
+      ],
+      declarations: [
+        MediaViewerComponent,
+        VarDirective,
+        FileSizePipe,
+        MetadataFieldWrapperComponent,
+      ],
+      providers: [
+        { provide: BitstreamDataService, useValue: bitstreamDataService },
+      ],
+
+      schemas: [NO_ERRORS_SCHEMA],
+    }).compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(MediaViewerComponent);
+    comp = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  describe('when the bitstreams are loading', () => {
+    beforeEach(() => {
+      comp.mediaList$.next([mockMediaViewerItem]);
+      comp.videoOptions = true;
+      comp.isLoading = true;
+      fixture.detectChanges();
+    });
+
+    it('should call the createMediaViewerItem', () => {
+      const mediaItem = comp.createMediaViewerItem(
+        mockBitstream,
+        MockBitstreamFormat1,
+        undefined
+      );
+      expect(mediaItem).toBeTruthy();
+      expect(mediaItem.thumbnail).toBe(null);
+    });
+
+    it('should display a loading component', () => {
+      const loading = fixture.debugElement.query(By.css('ds-loading'));
+      expect(loading.nativeElement).toBeDefined();
+    });
+  });
+
+  describe('when the bitstreams loading is failed', () => {
+    beforeEach(() => {
+      comp.mediaList$.next([]);
+      comp.videoOptions = true;
+      comp.isLoading = false;
+      fixture.detectChanges();
+    });
+
+    it('should call the createMediaViewerItem', () => {
+      const mediaItem = comp.createMediaViewerItem(
+        mockBitstream,
+        MockBitstreamFormat1,
+        undefined
+      );
+      expect(mediaItem).toBeTruthy();
+      expect(mediaItem.thumbnail).toBe(null);
+    });
+
+    it('should display a default, thumbnail', () => {
+      const defaultThumbnail = fixture.debugElement.query(
+        By.css('ds-media-viewer-image')
+      );
+      expect(defaultThumbnail.nativeElement).toBeDefined();
+    });
+  });
+});
--- a/src/app/+item-page/media-viewer/media-viewer.component.ts
+++ b/src/app/+item-page/media-viewer/media-viewer.component.ts
@@ -0,0 +1,114 @@
+import { Component, Input, OnInit } from '@angular/core';
+import { BehaviorSubject, Observable } from 'rxjs';
+import { filter, take } from 'rxjs/operators';
+import { BitstreamDataService } from '../../core/data/bitstream-data.service';
+import { PaginatedList } from '../../core/data/paginated-list.model';
+import { RemoteData } from '../../core/data/remote-data';
+import { BitstreamFormat } from '../../core/shared/bitstream-format.model';
+import { Bitstream } from '../../core/shared/bitstream.model';
+import { Item } from '../../core/shared/item.model';
+import { MediaViewerItem } from '../../core/shared/media-viewer-item.model';
+import { getFirstSucceededRemoteDataPayload } from '../../core/shared/operators';
+import { hasValue } from '../../shared/empty.util';
+import { followLink } from '../../shared/utils/follow-link-config.model';
+
+/**
+ * This componenet renders the media viewers
+ */
+
+@Component({
+  selector: 'ds-media-viewer',
+  templateUrl: './media-viewer.component.html',
+  styleUrls: ['./media-viewer.component.scss'],
+})
+export class MediaViewerComponent implements OnInit {
+  @Input() item: Item;
+  @Input() videoOptions: boolean;
+
+  mediaList$: BehaviorSubject<MediaViewerItem[]>;
+
+  isLoading: boolean;
+
+  thumbnailPlaceholder = './assets/images/replacement_document.svg';
+
+  constructor(protected bitstreamDataService: BitstreamDataService) {}
+
+  /**
+   * This metod loads all the Bitstreams and Thumbnails and contert it to media item
+   */
+  ngOnInit(): void {
+    this.mediaList$ = new BehaviorSubject([]);
+    this.isLoading = true;
+    this.loadRemoteData('ORIGINAL').subscribe((bitstreamsRD) => {
+      if (bitstreamsRD.payload.page.length === 0) {
+        this.isLoading = false;
+        this.mediaList$.next([]);
+      } else {
+        this.loadRemoteData('THUMBNAIL').subscribe((thumbnailsRD) => {
+          for (
+            let index = 0;
+            index < bitstreamsRD.payload.page.length;
+            index++
+          ) {
+            bitstreamsRD.payload.page[index].format
+              .pipe(getFirstSucceededRemoteDataPayload())
+              .subscribe((format) => {
+                const current = this.mediaList$.getValue();
+                const mediaItem = this.createMediaViewerItem(
+                  bitstreamsRD.payload.page[index],
+                  format,
+                  thumbnailsRD.payload && thumbnailsRD.payload.page[index]
+                );
+                this.mediaList$.next([...current, mediaItem]);
+              });
+          }
+          this.isLoading = false;
+        });
+      }
+    });
+  }
+
+  /**
+   * This method will retrieve the next page of Bitstreams from the external BitstreamDataService call.
+   * @param bundleName Bundle name
+   */
+  loadRemoteData(
+    bundleName: string
+  ): Observable<RemoteData<PaginatedList<Bitstream>>> {
+    return this.bitstreamDataService
+      .findAllByItemAndBundleName(
+        this.item,
+        bundleName,
+        {},
+        true,
+        true,
+        followLink('format')
+      )
+      .pipe(
+        filter(
+          (bitstreamsRD: RemoteData<PaginatedList<Bitstream>>) =>
+            hasValue(bitstreamsRD) &&
+            (hasValue(bitstreamsRD.errorMessage) || hasValue(bitstreamsRD.payload))
+        ),
+        take(1)
+      );
+  }
+
+  /**
+   * This method create MediaViewerItem from incoming bitstreams
+   * @param original original remote data bitstream
+   * @param format original bitstream format
+   * @param thumbnail trunbnail remote data bitstream
+   */
+  createMediaViewerItem(
+    original: Bitstream,
+    format: BitstreamFormat,
+    thumbnail: Bitstream
+  ): MediaViewerItem {
+    const mediaItem = new MediaViewerItem();
+    mediaItem.bitstream = original;
+    mediaItem.format = format.mimetype.split('/')[0];
+    mediaItem.thumbnail = thumbnail ? thumbnail._links.content.href : null;
+    return mediaItem;
+  }
+}
--- a/src/app/+item-page/simple/item-types/publication/publication.component.html
+++ b/src/app/+item-page/simple/item-types/publication/publication.component.html
@@ -8,9 +8,14 @@
 </div>
 <div class="row">
  <div class="col-xs-12 col-md-4">
+    <ng-container *ngIf="!mediaViewer.image">
      <ds-metadata-field-wrapper>
        <ds-thumbnail [thumbnail]="getThumbnail() | async"></ds-thumbnail>
      </ds-metadata-field-wrapper>
+    </ng-container>
+    <ng-container *ngIf="mediaViewer.image">
+      <ds-media-viewer [item]="object" [videoOptions]="mediaViewer.video"></ds-media-viewer>
+    </ng-container>
    <ds-item-page-file-section [item]="object"></ds-item-page-file-section>
    <ds-item-page-date-field [item]="object"></ds-item-page-date-field>
    <ds-item-page-author-field [item]="object"></ds-item-page-author-field>
--- a/src/app/+item-page/simple/item-types/shared/item.component.ts
+++ b/src/app/+item-page/simple/item-types/shared/item.component.ts
@@ -1,5 +1,6 @@
 import { Component, Input, OnInit } from '@angular/core';
 import { Observable } from 'rxjs';
+import { environment } from '../../../../../environments/environment';
 import { BitstreamDataService } from '../../../../core/data/bitstream-data.service';
 import { Bitstream } from '../../../../core/shared/bitstream.model';
 import { Item } from '../../../../core/shared/item.model';
@@ -20,6 +21,7 @@ export class ItemComponent implements OnInit {
   * Route to the item page
   */
  itemPageRoute: string;
+  mediaViewer = environment.mediaViewer;

  constructor(protected bitstreamDataService: BitstreamDataService) {
  }
--- a/src/app/+item-page/simple/item-types/untyped-item/untyped-item.component.html
+++ b/src/app/+item-page/simple/item-types/untyped-item/untyped-item.component.html
@@ -8,9 +8,14 @@
 </div>
 <div class="row">
  <div class="col-xs-12 col-md-4">
+    <ng-container *ngIf="!mediaViewer.image">
      <ds-metadata-field-wrapper>
        <ds-thumbnail [thumbnail]="getThumbnail() | async"></ds-thumbnail>
      </ds-metadata-field-wrapper>
+    </ng-container>
+    <ng-container *ngIf="mediaViewer.image">
+      <ds-media-viewer [item]="object" [videoOptions]="mediaViewer.video"></ds-media-viewer>
+    </ng-container>
    <ds-item-page-file-section [item]="object"></ds-item-page-file-section>
    <ds-item-page-date-field [item]="object"></ds-item-page-date-field>
    <ds-item-page-author-field [item]="object"></ds-item-page-author-field>
--- a/src/app/core/shared/media-viewer-item.model.ts
+++ b/src/app/core/shared/media-viewer-item.model.ts
@@ -0,0 +1,21 @@
+import { Bitstream } from './bitstream.model';
+
+/**
+ * Model representing a media viewer item
+ */
+export class MediaViewerItem {
+  /**
+   * Incoming Bitsream
+   */
+  bitstream: Bitstream;
+
+  /**
+   * Incoming Bitsream format type
+   */
+  format: string;
+
+  /**
+   * Incoming Bitsream thumbnail
+   */
+  thumbnail: string;
+}
--- a/src/assets/i18n/en.json5
+++ b/src/assets/i18n/en.json5
@@ -2546,6 +2546,13 @@
  "publication.search.title": "DSpace Angular :: Publication Search",
  

+  "media-viewer.next": "Next",
+
+  "media-viewer.previous": "Previous",
+
+  "media-viewer.playlist": "Playlist",
+
+
  "register-email.title": "New user registration",

  "register-page.create-profile.header": "Create Profile",
--- a/src/assets/images/replacement_audio.svg
+++ b/src/assets/images/replacement_audio.svg
@@ -0,0 +1,9 @@
+<svg width="240" height="180" viewBox="0 0 240 180" fill="none" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<rect width="240" height="180" fill="url(#pattern0)"/>
+<defs>
+<pattern id="pattern0" patternContentUnits="objectBoundingBox" width="1" height="1">
+<use xlink:href="#image0" transform="scale(0.00416667 0.00555556)"/>
+</pattern>
+<image id="image0" width="240" height="180" xlink:href="data:image/png;base64,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"/>
+</defs>
+</svg>
--- a/src/assets/images/replacement_document.svg
+++ b/src/assets/images/replacement_document.svg
@@ -0,0 +1,9 @@
+<svg width="240" height="180" viewBox="0 0 240 180" fill="none" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<rect width="240" height="180" fill="url(#pattern0)"/>
+<defs>
+<pattern id="pattern0" patternContentUnits="objectBoundingBox" width="1" height="1">
+<use xlink:href="#image0" transform="scale(0.00416667 0.00555556)"/>
+</pattern>
+<image id="image0" width="240" height="180" xlink:href="data:image/png;base64,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"/>
+</defs>
+</svg>
--- a/src/assets/images/replacement_image.svg
+++ b/src/assets/images/replacement_image.svg
@@ -0,0 +1,9 @@
+<svg width="240" height="180" viewBox="0 0 240 180" fill="none" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<rect width="240" height="180" fill="url(#pattern0)"/>
+<defs>
+<pattern id="pattern0" patternContentUnits="objectBoundingBox" width="1" height="1">
+<use xlink:href="#image0" transform="scale(0.00416667 0.00555556)"/>
+</pattern>
+<image id="image0" width="240" height="180" xlink:href="data:image/png;base64,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"/>
+</defs>
+</svg>
--- a/src/assets/images/replacement_video.svg
+++ b/src/assets/images/replacement_video.svg
@@ -0,0 +1,9 @@
+<svg width="240" height="180" viewBox="0 0 240 180" fill="none" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<rect width="240" height="180" fill="url(#pattern0)"/>
+<defs>
+<pattern id="pattern0" patternContentUnits="objectBoundingBox" width="1" height="1">
+<use xlink:href="#image0" transform="scale(0.00416667 0.00555556)"/>
+</pattern>
+<image id="image0" width="240" height="180" xlink:href="data:image/png;base64,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"/>
+</defs>
+</svg>
--- a/src/config/global-config.interface.ts
+++ b/src/config/global-config.interface.ts
@@ -12,6 +12,7 @@ import { CollectionPageConfig } from './collection-page-config.interface';
 import { ThemeConfig } from './theme.model';
 import { AuthConfig } from './auth-config.interfaces';
 import { UIServerConfig } from './ui-server-config.interface';
+import { MediaViewerConfig } from './media-viewer-config.interface';

 export interface GlobalConfig extends Config {
  ui: UIServerConfig;
@@ -32,4 +33,5 @@ export interface GlobalConfig extends Config {
  collection: CollectionPageConfig;
  themes: ThemeConfig[];
  rewriteDownloadUrls: boolean;
+  mediaViewer: MediaViewerConfig;
 }
--- a/src/config/media-viewer-config.interface.ts
+++ b/src/config/media-viewer-config.interface.ts
@@ -0,0 +1,6 @@
+import { Config } from './config.interface';
+
+export interface MediaViewerConfig extends Config {
+  image: boolean;
+  video: boolean;
+}
--- a/src/environments/environment.common.ts
+++ b/src/environments/environment.common.ts
@@ -263,4 +263,11 @@ export const environment: GlobalConfig = {
  ],
  // Whether the UI should rewrite file download URLs to match its domain. Only necessary to enable when running UI and REST API on separate domains
  rewriteDownloadUrls: false,
+  // Whether to enable media viewer for image and/or video Bitstreams (i.e. Bitstreams whose MIME type starts with "image" or "video").  
+  // For images, this enables a gallery viewer where you can zoom or page through images. 
+  // For videos, this enables embedded video streaming
+  mediaViewer: {
+    image: false,
+    video: false,
+  },
 };
--- a/src/environments/mock-environment.ts
+++ b/src/environments/mock-environment.ts
@@ -217,4 +217,8 @@ export const environment: Partial<GlobalConfig> = {
      name: 'base',
    },
  ],
+  mediaViewer: {
+    image: true,
+    video: true
+  },
 };
--- a/src/styles/_global-styles.scss
+++ b/src/styles/_global-styles.scss
@@ -35,10 +35,6 @@ body {
  margin: 0;
 }

-ds-header-navbar-wrapper {
-  z-index: var(--ds-nav-z-index);
-}
-
 ds-admin-sidebar {
  position: fixed;
  z-index: var(--ds-sidebar-z-index);
@@ -47,3 +43,16 @@ ds-admin-sidebar {
 .ds-full-screen-loader {
  height: 100vh;
 }
+
+.sticky-top {
+  z-index: 0;
+}
+
+.media-viewer
+  .change-gallery
+  .ngx-gallery
+  ngx-gallery-preview.ngx-gallery-active {
+  right: 0;
+  left: auto;
+  width: calc(100% - 53px);
+}
--- a/yarn.lock
+++ b/yarn.lock
@@ -1247,6 +1247,11 @@
    merge-source-map "^1.1.0"
    schema-utils "^2.7.0"

+"@kolkov/ngx-gallery@^1.2.3":
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/@kolkov/ngx-gallery/-/ngx-gallery-1.2.3.tgz#bb15d4b64a5c03905677aa4ca741835aabe41f43"
+  integrity sha512-Dpnhwq3DGPSXrNt65gexo+/Smb2L0bne14A0WONN04+racETtcY33fqFvNWfRw5Nvk2Eza+sq95eEA0NbgF/6g==
+
 "@ng-bootstrap/ng-bootstrap@7.0.0":
  version "7.0.0"
  resolved "https://registry.yarnpkg.com/@ng-bootstrap/ng-bootstrap/-/ng-bootstrap-7.0.0.tgz#3bfa62eb52fdb891b1ce693ea11c39127e2d1ab7"