Merge pull request #1995 from mspalti/item-back-button

Back to results button in item view

src/app/browse-by/browse-by-page.module.ts

@@ -4,16 +4,21 @@ import { BrowseByModule } from './browse-by.module';
 import { ItemDataService } from '../core/data/item-data.service';
 import { BrowseService } from '../core/browse/browse.service';
 import { BrowseByGuard } from './browse-by-guard';
+import { SharedBrowseByModule } from '../shared/browse-by/shared-browse-by.module';
 
 @NgModule({
   imports: [
+    SharedBrowseByModule,
     BrowseByRoutingModule,
-    BrowseByModule.withEntryComponents()
+    BrowseByModule.withEntryComponents(),
   ],
   providers: [
     ItemDataService,
     BrowseService,
-    BrowseByGuard
+    BrowseByGuard,
+  ],
+  declarations: [
+
   ]
 })
 export class BrowseByPageModule {

src/app/browse-by/browse-by.module.ts

@@ -1,7 +1,6 @@
 import { NgModule } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { BrowseByTitlePageComponent } from './browse-by-title-page/browse-by-title-page.component';
-import { SharedModule } from '../shared/shared.module';
 import { BrowseByMetadataPageComponent } from './browse-by-metadata-page/browse-by-metadata-page.component';
 import { BrowseByDatePageComponent } from './browse-by-date-page/browse-by-date-page.component';
 import { BrowseBySwitcherComponent } from './browse-by-switcher/browse-by-switcher.component';
@@ -10,6 +9,7 @@ import { ComcolModule } from '../shared/comcol/comcol.module';
 import { ThemedBrowseByMetadataPageComponent } from './browse-by-metadata-page/themed-browse-by-metadata-page.component';
 import { ThemedBrowseByDatePageComponent } from './browse-by-date-page/themed-browse-by-date-page.component';
 import { ThemedBrowseByTitlePageComponent } from './browse-by-title-page/themed-browse-by-title-page.component';
+import { SharedBrowseByModule } from '../shared/browse-by/shared-browse-by.module';
 
 const ENTRY_COMPONENTS = [
   // put only entry components that use custom decorator
@@ -25,9 +25,9 @@ const ENTRY_COMPONENTS = [
 
 @NgModule({
   imports: [
+    SharedBrowseByModule,
     CommonModule,
     ComcolModule,
-    SharedModule
   ],
   declarations: [
     BrowseBySwitcherComponent,
@@ -45,7 +45,7 @@ export class BrowseByModule {
    */
   static withEntryComponents() {
     return {
-      ngModule: SharedModule,
+      ngModule: SharedBrowseByModule,
       providers: ENTRY_COMPONENTS.map((component) => ({provide: component}))
     };
   }

src/app/entity-groups/journal-entities/item-pages/journal-issue/journal-issue.component.html

@@ -1,3 +1,4 @@
+<ds-themed-results-back-button *ngIf="showBackButton | async" [back]="back"></ds-themed-results-back-button>
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>

src/app/entity-groups/journal-entities/item-pages/journal-issue/journal-issue.component.scss

@@ -1 +1,2 @@
 @import '../../../../../styles/variables.scss';
+

src/app/entity-groups/journal-entities/item-pages/journal-volume/journal-volume.component.html

@@ -1,3 +1,4 @@
+<ds-themed-results-back-button *ngIf="showBackButton | async" [back]="back"></ds-themed-results-back-button>
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>

src/app/entity-groups/journal-entities/item-pages/journal/journal.component.html

@@ -1,3 +1,4 @@
+<ds-themed-results-back-button *ngIf="showBackButton | async" [back]="back"></ds-themed-results-back-button>
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>

src/app/entity-groups/journal-entities/item-pages/journal/journal.component.spec.ts

@@ -34,6 +34,7 @@ import { VersionHistoryDataService } from '../../../../core/data/version-history
 import { VersionDataService } from '../../../../core/data/version-data.service';
 import { WorkspaceitemDataService } from '../../../../core/submission/workspaceitem-data.service';
 import { SearchService } from '../../../../core/shared/search/search.service';
+import { mockRouteService } from '../../../../item-page/simple/item-types/shared/item.component.spec';
 
 let comp: JournalComponent;
 let fixture: ComponentFixture<JournalComponent>;
@@ -99,7 +100,7 @@ describe('JournalComponent', () => {
         { provide: BitstreamDataService, useValue: mockBitstreamDataService },
         { provide: WorkspaceitemDataService, useValue: {} },
         { provide: SearchService, useValue: {} },
-        { provide: RouteService, useValue: {} }
+        { provide: RouteService, useValue: mockRouteService }
       ],
 
       schemas: [NO_ERRORS_SCHEMA]

src/app/entity-groups/journal-entities/journal-entities.module.ts

@@ -20,6 +20,7 @@ import { JournalVolumeSidebarSearchListElementComponent } from './item-list-elem
 import { JournalIssueSidebarSearchListElementComponent } from './item-list-elements/sidebar-search-list-elements/journal-issue/journal-issue-sidebar-search-list-element.component';
 import { JournalSidebarSearchListElementComponent } from './item-list-elements/sidebar-search-list-elements/journal/journal-sidebar-search-list-element.component';
 import { ItemSharedModule } from '../../item-page/item-shared.module';
+import { ResultsBackButtonModule } from '../../shared/results-back-button/results-back-button.module';
 
 const ENTRY_COMPONENTS = [
   // put only entry components that use custom decorator
@@ -47,7 +48,8 @@ const ENTRY_COMPONENTS = [
   imports: [
     CommonModule,
     ItemSharedModule,
-    SharedModule
+    SharedModule,
+    ResultsBackButtonModule
   ],
   declarations: [
     ...ENTRY_COMPONENTS

src/app/entity-groups/research-entities/item-pages/org-unit/org-unit.component.html

@@ -1,3 +1,4 @@
+<ds-themed-results-back-button *ngIf="showBackButton | async" [back]="back"></ds-themed-results-back-button>
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>

src/app/entity-groups/research-entities/item-pages/person/person.component.html

@@ -1,3 +1,4 @@
+<ds-themed-results-back-button *ngIf="showBackButton | async" [back]="back"></ds-themed-results-back-button>
 <div class="d-flex flex-row">
   <ds-item-page-title-field class="mr-auto" [item]="object">
   </ds-item-page-title-field>

src/app/entity-groups/research-entities/item-pages/project/project.component.html

@@ -1,3 +1,4 @@
+<ds-themed-results-back-button *ngIf="showBackButton | async" [back]="back"></ds-themed-results-back-button>
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>

src/app/entity-groups/research-entities/research-entities.module.ts

@@ -29,6 +29,7 @@ import { OrgUnitSidebarSearchListElementComponent } from './item-list-elements/s
 import { PersonSidebarSearchListElementComponent } from './item-list-elements/sidebar-search-list-elements/person/person-sidebar-search-list-element.component';
 import { ProjectSidebarSearchListElementComponent } from './item-list-elements/sidebar-search-list-elements/project/project-sidebar-search-list-element.component';
 import { ItemSharedModule } from '../../item-page/item-shared.module';
+import { ResultsBackButtonModule } from '../../shared/results-back-button/results-back-button.module';
 
 const ENTRY_COMPONENTS = [
 // put only entry components that use custom decorator
@@ -69,7 +70,8 @@ const COMPONENTS = [
     CommonModule,
     ItemSharedModule,
     SharedModule,
-    NgbTooltipModule
+    NgbTooltipModule,
+    ResultsBackButtonModule
   ],
   declarations: [
     ...COMPONENTS,

src/app/item-page/item-page.module.ts

@@ -47,6 +47,7 @@ import { NgbAccordionModule } from '@ng-bootstrap/ng-bootstrap';
 import { OrcidSyncSettingsComponent } from './orcid-page/orcid-sync-settings/orcid-sync-settings.component';
 import { OrcidQueueComponent } from './orcid-page/orcid-queue/orcid-queue.component';
 import { UploadModule } from '../shared/upload/upload.module';
+import { ResultsBackButtonModule } from '../shared/results-back-button/results-back-button.module';
 import { ItemAlertsComponent } from './alerts/item-alerts.component';
 import { ItemVersionsModule } from './versions/item-versions.module';
 import { BitstreamRequestACopyPageComponent } from './bitstreams/request-a-copy/bitstream-request-a-copy-page.component';
@@ -107,7 +108,8 @@ const DECLARATIONS = [
     ResearchEntitiesModule.withEntryComponents(),
     NgxGalleryModule,
     NgbAccordionModule,
-    UploadModule,
+    ResultsBackButtonModule,
+    UploadModule
   ],
   declarations: [
     ...DECLARATIONS,

src/app/item-page/simple/item-types/publication/publication.component.html

@@ -1,3 +1,4 @@
+<ds-themed-results-back-button *ngIf="showBackButton | async" [back]="back"></ds-themed-results-back-button>
 <div class="row" *ngIf="iiifEnabled">
   <div class="col-12">
     <ds-mirador-viewer  id="iiif-viewer"

src/app/item-page/simple/item-types/publication/publication.component.scss

@@ -1 +1,2 @@
 @import '../../../../../styles/variables.scss';
+

src/app/item-page/simple/item-types/publication/publication.component.spec.ts

@@ -163,12 +163,12 @@ describe('PublicationComponent', () => {
 
   describe('with IIIF viewer and search', () => {
 
+    const localMockRouteService = {
+      getPreviousUrl(): Observable<string> {
+        return of('/search?query=test%20query&fakeParam=true');
+      }
+    };
     beforeEach(waitForAsync(() => {
-      const localMockRouteService = {
-        getPreviousUrl(): Observable<string> {
-          return of('/search?query=test%20query&fakeParam=true');
-        }
-      };
       const iiifEnabledMap: MetadataMap = {
         'dspace.iiif.enabled': [getIIIFEnabled(true)],
         'iiif.search.enabled': [getIIIFSearchEnabled(true)],
@@ -193,13 +193,12 @@ describe('PublicationComponent', () => {
   });
 
   describe('with IIIF viewer and search but no previous search query', () => {
-
+    const localMockRouteService = {
+      getPreviousUrl(): Observable<string> {
+        return of('/item');
+      }
+    };
     beforeEach(waitForAsync(() => {
-      const localMockRouteService = {
-        getPreviousUrl(): Observable<string> {
-          return of('/item');
-        }
-      };
       const iiifEnabledMap: MetadataMap = {
         'dspace.iiif.enabled': [getIIIFEnabled(true)],
         'iiif.search.enabled': [getIIIFSearchEnabled(true)],

src/app/item-page/simple/item-types/shared/item.component.spec.ts

@@ -39,6 +39,11 @@ import { RouterTestingModule } from '@angular/router/testing';
 import { AuthorizationDataService } from '../../../../core/data/feature-authorization/authorization-data.service';
 import { ResearcherProfileDataService } from '../../../../core/profile/researcher-profile-data.service';
 
+import { buildPaginatedList } from '../../../../core/data/paginated-list.model';
+import { PageInfo } from '../../../../core/shared/page-info.model';
+import { Router } from '@angular/router';
+import { ItemComponent } from './item.component';
+
 export function getIIIFSearchEnabled(enabled: boolean): MetadataValue {
   return Object.assign(new MetadataValue(), {
     'value': enabled,
@@ -59,7 +64,11 @@ export function getIIIFEnabled(enabled: boolean): MetadataValue {
   });
 }
 
-export const mockRouteService = jasmine.createSpyObj('RouteService', ['getPreviousUrl']);
+export const mockRouteService = {
+  getPreviousUrl(): Observable<string> {
+    return observableOf('');
+  }
+};
 
 /**
  * Create a generic test for an item-page-fields component using a mockItem and the type of component
@@ -114,7 +123,7 @@ export function getItemPageFieldsTest(mockItem: Item, component) {
           { provide: BitstreamDataService, useValue: mockBitstreamDataService },
           { provide: WorkspaceitemDataService, useValue: {} },
           { provide: SearchService, useValue: {} },
-          { provide: RouteService, useValue: {} },
+          { provide: RouteService, useValue: mockRouteService },
           { provide: AuthorizationDataService, useValue: authorizationService },
           { provide: ResearcherProfileDataService, useValue: {} }
         ],
@@ -376,4 +385,110 @@ describe('ItemComponent', () => {
     });
   });
 
+  const mockItem: Item = Object.assign(new Item(), {
+    bundles: createSuccessfulRemoteDataObject$(buildPaginatedList(new PageInfo(), [])),
+    metadata: {
+      'publicationissue.issueNumber': [
+        {
+          language: 'en_US',
+          value: '1234'
+        }
+      ],
+      'dc.description': [
+        {
+          language: 'en_US',
+          value: 'desc'
+        }
+      ]
+    },
+  });
+  describe('back to results', () => {
+    let comp: ItemComponent;
+    let fixture: ComponentFixture<any>;
+    let router: Router;
+
+    const searchUrl = '/search?query=test&spc.page=2';
+    const browseUrl = '/browse/title?scope=0cc&bbm.page=3';
+    const recentSubmissionsUrl = '/collections/be7b8430-77a5-4016-91c9-90863e50583a?cp.page=3';
+
+    beforeEach(waitForAsync(() => {
+      TestBed.configureTestingModule({
+        imports: [
+          TranslateModule.forRoot({
+            loader: {
+              provide: TranslateLoader,
+              useClass: TranslateLoaderMock
+            }
+          }),
+          RouterTestingModule,
+        ],
+        declarations: [ItemComponent, GenericItemPageFieldComponent, TruncatePipe ],
+        providers: [
+          { provide: ItemDataService, useValue: {} },
+          { provide: TruncatableService, useValue: {} },
+          { provide: RelationshipDataService, useValue: {} },
+          { provide: ObjectCacheService, useValue: {} },
+          { provide: UUIDService, useValue: {} },
+          { provide: Store, useValue: {} },
+          { provide: RemoteDataBuildService, useValue: {} },
+          { provide: CommunityDataService, useValue: {} },
+          { provide: HALEndpointService, useValue: {} },
+          { provide: HttpClient, useValue: {} },
+          { provide: DSOChangeAnalyzer, useValue: {} },
+          { provide: VersionHistoryDataService, useValue: {} },
+          { provide: VersionDataService, useValue: {} },
+          { provide: NotificationsService, useValue: {} },
+          { provide: DefaultChangeAnalyzer, useValue: {} },
+          { provide: BitstreamDataService, useValue: {} },
+          { provide: WorkspaceitemDataService, useValue: {} },
+          { provide: SearchService, useValue: {} },
+          { provide: RouteService, useValue: mockRouteService },
+          { provide: AuthorizationDataService, useValue: {} },
+          { provide: ResearcherProfileDataService, useValue: {} }
+        ],
+        schemas: [NO_ERRORS_SCHEMA]
+      }).overrideComponent(ItemComponent, {
+        set: {changeDetection: ChangeDetectionStrategy.Default}
+      });
+    }));
+
+    beforeEach(waitForAsync(() => {
+      router = TestBed.inject(Router);
+      spyOn(router, 'navigateByUrl');
+      TestBed.compileComponents();
+      fixture = TestBed.createComponent(ItemComponent);
+      comp = fixture.componentInstance;
+      comp.object = mockItem;
+      fixture.detectChanges();
+    }));
+
+    it('should hide back button',() => {
+      spyOn(mockRouteService, 'getPreviousUrl').and.returnValue(observableOf('/item'));
+      comp.showBackButton.subscribe((val) => {
+        expect(val).toBeFalse();
+      });
+    });
+    it('should show back button for search', () => {
+      spyOn(mockRouteService, 'getPreviousUrl').and.returnValue(observableOf(searchUrl));
+      comp.ngOnInit();
+      comp.showBackButton.subscribe((val) => {
+        expect(val).toBeTrue();
+      });
+    });
+    it('should show back button for browse', () => {
+      spyOn(mockRouteService, 'getPreviousUrl').and.returnValue(observableOf(browseUrl));
+      comp.ngOnInit();
+      comp.showBackButton.subscribe((val) => {
+        expect(val).toBeTrue();
+      });
+    });
+    it('should show back button for recent submissions', () => {
+      spyOn(mockRouteService, 'getPreviousUrl').and.returnValue(observableOf(recentSubmissionsUrl));
+      comp.ngOnInit();
+      comp.showBackButton.subscribe((val) => {
+        expect(val).toBeTrue();
+      });
+    });
+  });
+
 });

src/app/item-page/simple/item-types/shared/item.component.ts

@@ -5,6 +5,8 @@ import { getItemPageRoute } from '../../../item-page-routing-paths';
 import { RouteService } from '../../../../core/services/route.service';
 import { Observable } from 'rxjs';
 import { getDSpaceQuery, isIiifEnabled, isIiifSearchEnabled } from './item-iiif-utils';
+import { filter, map, take } from 'rxjs/operators';
+import { Router } from '@angular/router';
 
 @Component({
   selector: 'ds-item',
@@ -16,6 +18,17 @@ import { getDSpaceQuery, isIiifEnabled, isIiifSearchEnabled } from './item-iiif-
 export class ItemComponent implements OnInit {
   @Input() object: Item;
 
+  /**
+   * This regex matches previous routes. The button is shown
+   * for matching paths and hidden in other cases.
+   */
+  previousRoute = /^(\/search|\/browse|\/collections|\/admin\/search|\/mydspace)/;
+
+  /**
+   * Used to show or hide the back to results button in the view.
+   */
+  showBackButton: Observable<boolean>;
+
   /**
    * Route to the item page
    */
@@ -38,12 +51,33 @@ export class ItemComponent implements OnInit {
 
   mediaViewer;
 
-  constructor(protected routeService: RouteService) {
+  constructor(protected routeService: RouteService,
+              protected router: Router) {
     this.mediaViewer = environment.mediaViewer;
   }
 
+  /**
+   * The function used to return to list from the item.
+   */
+  back = () => {
+    this.routeService.getPreviousUrl().pipe(
+          take(1)
+        ).subscribe(
+          (url => {
+            this.router.navigateByUrl(url);
+          })
+        );
+  };
+
   ngOnInit(): void {
+
     this.itemPageRoute = getItemPageRoute(this.object);
+    // hide/show the back button
+    this.showBackButton = this.routeService.getPreviousUrl().pipe(
+      filter(url => this.previousRoute.test(url)),
+      take(1),
+      map(() => true)
+    );
     // check to see if iiif viewer is required.
     this.iiifEnabled = isIiifEnabled(this.object);
     this.iiifSearchEnabled = isIiifSearchEnabled(this.object);

src/app/item-page/simple/item-types/untyped-item/untyped-item.component.html

@@ -1,3 +1,4 @@
+<ds-themed-results-back-button *ngIf="showBackButton | async" [back]="back"></ds-themed-results-back-button>
 <div class="row" *ngIf="iiifEnabled">
   <div class="col-12">
     <ds-mirador-viewer id="iiif-viewer"
@@ -7,6 +8,7 @@
     </ds-mirador-viewer>
   </div>
 </div>
+
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>

src/app/item-page/simple/item-types/untyped-item/untyped-item.component.scss

@@ -1 +1,2 @@
 @import '../../../../../styles/variables.scss';
+

src/app/item-page/simple/item-types/untyped-item/untyped-item.component.spec.ts

@@ -169,13 +169,12 @@ describe('UntypedItemComponent', () => {
   });
 
   describe('with IIIF viewer and search', () => {
-
+    const localMockRouteService = {
+      getPreviousUrl(): Observable<string> {
+        return of('/search?query=test%20query&fakeParam=true');
+      }
+    };
     beforeEach(waitForAsync(() => {
-      const localMockRouteService = {
-        getPreviousUrl(): Observable<string> {
-          return of('/search?query=test%20query&fakeParam=true');
-        }
-      };
       const iiifEnabledMap: MetadataMap = {
         'dspace.iiif.enabled': [getIIIFEnabled(true)],
         'iiif.search.enabled': [getIIIFSearchEnabled(true)],
@@ -183,6 +182,7 @@ describe('UntypedItemComponent', () => {
       TestBed.overrideProvider(RouteService, {useValue: localMockRouteService});
       TestBed.compileComponents();
       fixture = TestBed.createComponent(UntypedItemComponent);
+      spyOn(localMockRouteService, 'getPreviousUrl').and.callThrough();
       comp = fixture.componentInstance;
       comp.object = getItem(iiifEnabledMap);
       fixture.detectChanges();
@@ -196,17 +196,16 @@ describe('UntypedItemComponent', () => {
     it('should retrieve the query term for previous route', (): void => {
       expect(comp.iiifQuery$.subscribe(result => expect(result).toEqual('test query')));
     });
-
   });
 
   describe('with IIIF viewer and search but no previous search query', () => {
 
+    const localMockRouteService = {
+      getPreviousUrl(): Observable<string> {
+        return of('/item');
+      }
+    };
     beforeEach(waitForAsync(() => {
-      const localMockRouteService = {
-        getPreviousUrl(): Observable<string> {
-          return of('/item');
-        }
-      };
       const iiifEnabledMap: MetadataMap = {
         'dspace.iiif.enabled': [getIIIFEnabled(true)],
         'iiif.search.enabled': [getIIIFSearchEnabled(true)],
@@ -214,6 +213,7 @@ describe('UntypedItemComponent', () => {
       TestBed.overrideProvider(RouteService, {useValue: localMockRouteService});
       TestBed.compileComponents();
       fixture = TestBed.createComponent(UntypedItemComponent);
+
       comp = fixture.componentInstance;
       comp.object = getItem(iiifEnabledMap);
       fixture.detectChanges();

src/app/item-page/simple/item-types/versioned-item/versioned-item.component.ts

@@ -31,13 +31,13 @@ export class VersionedItemComponent extends ItemComponent {
     private translateService: TranslateService,
     private versionService: VersionDataService,
     private itemVersionShared: ItemVersionsSharedService,
-    private router: Router,
+    protected router: Router,
     private workspaceItemDataService: WorkspaceitemDataService,
     private searchService: SearchService,
     private itemService: ItemDataService,
-    protected routeService: RouteService
+    protected routeService: RouteService,
   ) {
-    super(routeService);
+    super(routeService, router);
   }
 
   /**

src/app/shared/browse-by/browse-by.component.html

@@ -3,7 +3,7 @@
   <ng-container *ngComponentOutlet="getStartsWithComponent(); injector: objectInjector;"></ng-container>
   <div *ngIf="objects?.hasSucceeded && !objects?.isLoading && objects?.payload?.page.length > 0" @fadeIn>
       <div *ngIf="shouldDisplayResetButton$ |async" class="mb-2 reset">
-          <button class="btn btn-secondary" (click)="back()"><i class="fas fa-arrow-left"></i> {{'browse.back.all-results' | translate}}</button>
+        <ds-themed-results-back-button [back]="back" [buttonLabel]="buttonLabel"></ds-themed-results-back-button>
       </div>
     <ds-viewable-collection
       [config]="paginationConfig"
@@ -18,7 +18,7 @@
   <ds-error *ngIf="objects?.hasFailed" message="{{'error.browse-by' | translate}}"></ds-error>
   <div *ngIf="!objects?.isLoading && objects?.payload?.page.length === 0">
     <div *ngIf="shouldDisplayResetButton$ |async" class="d-inline-block mb-4 reset">
-      <button class="btn btn-secondary" (click)="back()"><i class="fas fa-arrow-left"></i> {{'browse.back.all-results' | translate}}</button>
+      <ds-themed-results-back-button [back]="back" [buttonLabel]="buttonLabel"></ds-themed-results-back-button>
     </div>
     <div class="alert alert-info w-100" role="alert">
       {{'browse.empty' | translate}}

src/app/shared/browse-by/browse-by.component.spec.ts

@@ -44,6 +44,9 @@ import { ConfigurationProperty } from '../../core/shared/configuration-property.
 import { SearchConfigurationServiceStub } from '../testing/search-configuration-service.stub';
 import { SearchConfigurationService } from '../../core/shared/search/search-configuration.service';
 import { getMockThemeService } from '../mocks/theme-service.mock';
+import { SharedModule } from '../shared.module';
+import { BrowseByRoutingModule } from '../../browse-by/browse-by-routing.module';
+import { AccessControlRoutingModule } from '../../access-control/access-control-routing.module';
 
 @listableObjectComponent(BrowseEntry, ViewMode.ListElement, DEFAULT_CONTEXT, 'custom')
 @Component({
@@ -112,7 +115,10 @@ describe('BrowseByComponent', () => {
     themeService = getMockThemeService('dspace');
     TestBed.configureTestingModule({
       imports: [
+        BrowseByRoutingModule,
+        AccessControlRoutingModule,
         CommonModule,
+        SharedModule,
         NgbModule,
         TranslateModule.forRoot({
           loader: {
@@ -123,7 +129,7 @@ describe('BrowseByComponent', () => {
         RouterTestingModule,
         NoopAnimationsModule
       ],
-      declarations: [],
+      declarations: [BrowseByComponent],
       providers: [
         { provide: SearchConfigurationService, useValue: new SearchConfigurationServiceStub() },
         { provide: ConfigurationDataService, useValue: configurationDataService },
@@ -242,16 +248,5 @@ describe('BrowseByComponent', () => {
       expect(button).toBeDefined();
     });
   });
-  describe('back', () => {
-    it('should navigate back to the main browse page', () => {
-      const id = 'test-pagination';
-      comp.back();
-      expect(paginationService.updateRoute).toHaveBeenCalledWith(id, {page: 1}, {
-        value: null,
-        startsWith: null,
-        [id + '.return']: null
-      });
-    });
-  });
 
 });

src/app/shared/browse-by/browse-by.component.ts

@@ -12,6 +12,7 @@ import { ViewMode } from '../../core/shared/view-mode.model';
 import { RouteService } from '../../core/services/route.service';
 import { map } from 'rxjs/operators';
 import { hasValue } from '../empty.util';
+import { TranslateService } from '@ngx-translate/core';
 
 @Component({
   selector: 'ds-browse-by',
@@ -124,11 +125,25 @@ export class BrowseByComponent implements OnInit, OnDestroy {
 
   public constructor(private injector: Injector,
                      protected paginationService: PaginationService,
+                     protected translateService: TranslateService,
                      private routeService: RouteService,
   ) {
 
   }
 
+  /**
+   * The label used by the back button.
+   */
+  buttonLabel = this.translateService.get('browse.back.all-results');
+
+  /**
+   * The function used for back navigation in metadata browse.
+   */
+  back = () => {
+    const page = +this.previousPage$.value > 1 ? +this.previousPage$.value : 1;
+    this.paginationService.updateRoute(this.paginationConfig.id, {page: page}, {[this.paginationConfig.id + '.return']: null, value: null, startsWith: null});
+  };
+
   /**
    * Go to the previous page
    */
@@ -184,14 +199,6 @@ export class BrowseByComponent implements OnInit, OnDestroy {
     this.sub = this.routeService.getQueryParameterValue(this.paginationConfig.id + '.return').subscribe(this.previousPage$);
   }
 
-  /**
-   * Navigate back to the previous browse by page
-   */
-  back() {
-    const page = +this.previousPage$.value > 1 ? +this.previousPage$.value : 1;
-    this.paginationService.updateRoute(this.paginationConfig.id, {page: page}, {[this.paginationConfig.id + '.return']: null, value: null, startsWith: null});
-  }
-
   ngOnDestroy(): void {
     if (this.sub) {
       this.sub.unsubscribe();

src/app/shared/browse-by/shared-browse-by.module.ts

@@ -0,0 +1,25 @@
+import { NgModule } from '@angular/core';
+import { BrowseByComponent } from './browse-by.component';
+import { CommonModule } from '@angular/common';
+import { SharedModule } from '../shared.module';
+import { ResultsBackButtonModule } from '../results-back-button/results-back-button.module';
+import { BrowseByRoutingModule } from '../../browse-by/browse-by-routing.module';
+import { AccessControlRoutingModule } from '../../access-control/access-control-routing.module';
+
+@NgModule({
+  declarations: [
+    BrowseByComponent,
+],
+  imports: [
+    ResultsBackButtonModule,
+    BrowseByRoutingModule,
+    AccessControlRoutingModule,
+    CommonModule,
+    SharedModule,
+  ],
+  exports: [
+    BrowseByComponent,
+    SharedModule,
+  ]
+})
+export class SharedBrowseByModule { }

src/app/shared/results-back-button/results-back-button.component.html

@@ -0,0 +1,5 @@
+<button class="btn btn-secondary btn-sm mb-2 ng-tns-c242-28" (click)="back()">
+  <i _ngcontent-dspace-angular-c242="" class="fas fa-arrow-left ng-tns-c242-3"></i>
+  {{this.buttonLabel | async}}
+</button>
+

src/app/shared/results-back-button/results-back-button.component.spec.ts

@@ -0,0 +1,73 @@
+import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
+import { ResultsBackButtonComponent } from './results-back-button.component';
+import { TranslateModule, TranslateService } from '@ngx-translate/core';
+import { NO_ERRORS_SCHEMA } from '@angular/core';
+import { RouterTestingModule } from '@angular/router/testing';
+import { of } from 'rxjs';
+
+describe('ResultsBackButtonComponent', () => {
+
+  let component: ResultsBackButtonComponent;
+  let fixture: ComponentFixture<ResultsBackButtonComponent>;
+
+  const translate = {
+    get: jasmine.createSpy('get').and.returnValue(of('item button')),
+  };
+
+  describe('back to results', () => {
+
+
+    beforeEach(waitForAsync(() => {
+      TestBed.configureTestingModule({
+        declarations: [ResultsBackButtonComponent],
+        imports: [TranslateModule.forRoot(),
+          RouterTestingModule.withRoutes([])
+        ],
+        providers: [
+          { provide: TranslateService, useValue: translate }
+        ],
+        schemas: [NO_ERRORS_SCHEMA]
+      }).compileComponents();
+    }));
+
+    describe('from a metadata browse list', () => {
+
+      beforeEach(waitForAsync(() => {
+        translate.get.calls.reset();
+        fixture = TestBed.createComponent(ResultsBackButtonComponent);
+        component = fixture.componentInstance;
+        component.buttonLabel = of('browse button');
+        component.ngOnInit();
+        fixture.detectChanges();
+      }));
+
+      it('should have back from browse label', () => {
+        expect(translate.get).not.toHaveBeenCalled();
+        const el = fixture.debugElement.nativeElement;
+        expect(el.innerHTML).toContain('browse button');
+      });
+
+    });
+
+    describe('from an item', () => {
+
+      beforeEach(waitForAsync(() => {
+        translate.get.calls.reset();
+        fixture = TestBed.createComponent(ResultsBackButtonComponent);
+        component = fixture.componentInstance;
+        component.ngOnInit();
+        fixture.detectChanges();
+      }));
+
+      it('should set item label by default', () => {
+        expect(translate.get).toHaveBeenCalledWith('search.browse.item-back');
+        const el = fixture.debugElement.nativeElement;
+        expect(el.innerHTML).toContain('item button');
+      });
+
+    });
+
+  });
+
+});
+

src/app/shared/results-back-button/results-back-button.component.ts

@@ -0,0 +1,37 @@
+import { ChangeDetectionStrategy, Component, Input, OnInit } from '@angular/core';
+import { Observable } from 'rxjs';
+import { TranslateService } from '@ngx-translate/core';
+
+@Component({
+  selector: 'ds-results-back-button',
+  styleUrls: ['./results-back-button.component.scss'],
+  templateUrl: './results-back-button.component.html',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+/**
+ * Component for creating a back to result list button.
+ */
+export class ResultsBackButtonComponent implements OnInit {
+
+  /**
+   * The function used for back navigation.
+   */
+  @Input() back: () => void;
+
+  /**
+   * The button label translation.
+   */
+  @Input() buttonLabel?: Observable<any>;
+
+  constructor(private translateService: TranslateService) {
+
+  }
+
+  ngOnInit(): void {
+    if (!this.buttonLabel) {
+      // Use the 'Back to Results' label as default.
+      this.buttonLabel = this.translateService.get('search.browse.item-back');
+    }
+  }
+
+}

src/app/shared/results-back-button/results-back-button.module.ts

@@ -0,0 +1,22 @@
+import { NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { TranslateModule } from '@ngx-translate/core';
+import { ResultsBackButtonComponent } from './results-back-button.component';
+import { ThemedResultsBackButtonComponent } from './themed-results-back-button.component';
+
+@NgModule({
+  declarations: [
+    ResultsBackButtonComponent,
+    ThemedResultsBackButtonComponent
+  ],
+  imports: [
+    CommonModule,
+    TranslateModule
+  ],
+  exports: [
+    ThemedResultsBackButtonComponent
+  ]
+})
+export class ResultsBackButtonModule {
+
+}

src/app/shared/results-back-button/themed-results-back-button.component.ts

@@ -0,0 +1,31 @@
+import { Component, Input } from '@angular/core';
+import { ThemedComponent } from '../theme-support/themed.component';
+import { ResultsBackButtonComponent } from './results-back-button.component';
+import { Observable } from 'rxjs';
+
+@Component({
+  selector: 'ds-themed-results-back-button',
+  styleUrls: [],
+  templateUrl: '../theme-support/themed.component.html',
+})
+export class ThemedResultsBackButtonComponent extends ThemedComponent<ResultsBackButtonComponent> {
+
+  @Input() buttonLabel?: Observable<any>;
+
+  @Input() back: () => void;
+
+  protected inAndOutputNames: (keyof ResultsBackButtonComponent & keyof this)[] = ['back', 'buttonLabel'];
+
+  protected getComponentName(): string {
+    return 'ResultsBackButtonComponent';
+  }
+
+  protected importThemedComponent(themeName: string): Promise<any> {
+    return import(`../../../themes/${themeName}/app/shared/results-back-button/results-back-button.component`);
+  }
+
+  protected importUnthemedComponent(): Promise<any> {
+    return import(`./results-back-button.component`);
+  }
+
+}

src/app/shared/shared.module.ts

@@ -71,7 +71,6 @@ import {
 } from './object-detail/my-dspace-result-detail-element/search-result-detail-element.component';
 import { ObjectDetailComponent } from './object-detail/object-detail.component';
 import { ObjNgFor } from './utils/object-ngfor.pipe';
-import { BrowseByComponent } from './browse-by/browse-by.component';
 import {
   BrowseEntryListElementComponent
 } from './object-list/browse-entry-list-element/browse-entry-list-element.component';
@@ -246,6 +245,7 @@ import { MetadataFieldWrapperComponent } from './metadata-field-wrapper/metadata
 import { LogInExternalProviderComponent } from './log-in/methods/log-in-external-provider/log-in-external-provider.component';
 
 
+
 const MODULES = [
   CommonModule,
   FormsModule,
@@ -259,7 +259,7 @@ const MODULES = [
   RouterModule,
   DragDropModule,
   GoogleRecaptchaModule,
-  MenuModule,
+  MenuModule
 ];
 
 const ROOT_MODULES = [
@@ -313,7 +313,6 @@ const COMPONENTS = [
   ViewModeSwitchComponent,
   TruncatableComponent,
   TruncatablePartComponent,
-  BrowseByComponent,
   InputSuggestionsComponent,
   FilterInputSuggestionsComponent,
   ValidationSuggestionsComponent,

src/assets/i18n/en.json5

@@ -780,6 +780,9 @@
   "browse.title.page": "Browsing {{ collection }} by {{ field }} {{ value }}",
 
 
+  "search.browse.item-back": "Back to Results",
+
+
   "chips.remove": "Remove chip",
 
 

src/themes/custom/app/shared/results-back-button/results-back-button.component.ts

@@ -0,0 +1,13 @@
+import {
+  ResultsBackButtonComponent as BaseComponent
+} from '../../../../../app/shared/results-back-button/results-back-button.component';
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'ds-results-back-button',
+  // styleUrls: ['./results-back-button.component.scss'],
+  styleUrls: ['../../../../../app/shared/results-back-button/results-back-button.component.scss'],
+  //templateUrl: './results-back-button.component.html',
+  templateUrl: '../../../../../app/shared/results-back-button/results-back-button.component.html'
+})
+export class ResultsBackButtonComponent extends BaseComponent {}

src/themes/custom/eager-theme.module.ts

@@ -40,8 +40,10 @@ import {
 } from './app/shared/dso-selector/modal-wrappers/edit-item-selector/edit-item-selector.component';
 
 import { CommunityListElementComponent } from './app/shared/object-list/community-list-element/community-list-element.component';
-import { CollectionListElementComponent } from './app/shared/object-list/collection-list-element/collection-list-element.component';
+import { CollectionListElementComponent} from './app/shared/object-list/collection-list-element/collection-list-element.component';
 import { CollectionDropdownComponent } from './app/shared/collection-dropdown/collection-dropdown.component';
+import { SharedBrowseByModule } from '../../app/shared/browse-by/shared-browse-by.module';
+import { ResultsBackButtonModule } from '../../app/shared/results-back-button/results-back-button.module';
 
 
 /**
@@ -77,18 +79,20 @@ const DECLARATIONS = [
 ];
 
 @NgModule({
-  imports: [
+    imports: [
-    CommonModule,
+        CommonModule,
-    SharedModule,
+        SharedModule,
-    RootModule,
+        RootModule,
-    NavbarModule,
+        NavbarModule,
-    ItemPageModule,
+        SharedBrowseByModule,
-    ItemSharedModule,
+        ResultsBackButtonModule,
-  ],
+        ItemPageModule,
-  declarations: DECLARATIONS,
+        ItemSharedModule,
-  providers: [
+    ],
-    ...ENTRY_COMPONENTS.map((component) => ({ provide: component }))
+    declarations: DECLARATIONS,
-  ],
+    providers: [
+        ...ENTRY_COMPONENTS.map((component) => ({provide: component}))
+    ],
 })
 /**
  * This module is included in the main bundle that gets downloaded at first page load. So it should

src/themes/custom/lazy-theme.module.ts

@@ -117,8 +117,12 @@ import { BrowseByTitlePageComponent } from './app/browse-by/browse-by-title-page
 import {
   ExternalSourceEntryImportModalComponent
 } from './app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/external-source-tab/external-source-entry-import-modal/external-source-entry-import-modal.component';
+import { SharedBrowseByModule } from '../../app/shared/browse-by/shared-browse-by.module';
+import { ResultsBackButtonModule } from '../../app/shared/results-back-button/results-back-button.module';
 import { ItemVersionsModule } from '../../app/item-page/versions/item-versions.module';
 import { ItemSharedModule } from '../../app/item-page/item-shared.module';
+import { ResultsBackButtonComponent } from './app/shared/results-back-button/results-back-button.component';
+
 
 const DECLARATIONS = [
   FileSectionComponent,
@@ -174,7 +178,7 @@ const DECLARATIONS = [
   BrowseByDatePageComponent,
   BrowseByTitlePageComponent,
   ExternalSourceEntryImportModalComponent,
-
+  ResultsBackButtonComponent
 
 ];
 
@@ -216,6 +220,8 @@ const DECLARATIONS = [
     ScrollToModule,
     SearchPageModule,
     SharedModule,
+    SharedBrowseByModule,
+    ResultsBackButtonModule,
     StatisticsModule,
     StatisticsPageModule,
     StoreModule,

src/themes/dspace/eager-theme.module.ts

@@ -7,6 +7,8 @@ import { HeaderComponent } from './app/header/header.component';
 import { HeaderNavbarWrapperComponent } from './app/header-nav-wrapper/header-navbar-wrapper.component';
 import { RootModule } from '../../app/root.module';
 import { NavbarModule } from '../../app/navbar/navbar.module';
+import { SharedBrowseByModule } from '../../app/shared/browse-by/shared-browse-by.module';
+import { ResultsBackButtonModule } from '../../app/shared/results-back-button/results-back-button.module';
 
 /**
  * Add components that use a custom decorator to ENTRY_COMPONENTS as well as DECLARATIONS.
@@ -27,6 +29,8 @@ const DECLARATIONS = [
   imports: [
     CommonModule,
     SharedModule,
+    SharedBrowseByModule,
+    ResultsBackButtonModule,
     RootModule,
     NavbarModule,
   ],

src/themes/dspace/lazy-theme.module.ts

@@ -55,6 +55,9 @@ import {
 } from '../../app/shared/resource-policies/resource-policies.module';
 import { ComcolModule } from '../../app/shared/comcol/comcol.module';
 import { RootModule } from '../../app/root.module';
+import { BrowseByPageModule } from '../../app/browse-by/browse-by-page.module';
+import { ResultsBackButtonModule } from '../../app/shared/results-back-button/results-back-button.module';
+import { SharedBrowseByModule } from '../../app/shared/browse-by/shared-browse-by.module';
 import { ItemVersionsModule } from '../../app/item-page/versions/item-versions.module';
 import { ItemSharedModule } from 'src/app/item-page/item-shared.module';
 
@@ -70,6 +73,8 @@ const DECLARATIONS = [
     RootModule,
     BitstreamFormatsModule,
     BrowseByModule,
+    BrowseByPageModule,
+    ResultsBackButtonModule,
     CollectionFormModule,
     CollectionPageModule,
     CommonModule,
@@ -99,6 +104,7 @@ const DECLARATIONS = [
     ScrollToModule,
     SearchPageModule,
     SharedModule,
+    SharedBrowseByModule,
     StatisticsModule,
     StatisticsPageModule,
     StoreModule,