[CST-4591] Change collection dropdown in order to accept entity type as input

src/app/shared/collection-dropdown/collection-dropdown.component.html

@@ -11,14 +11,13 @@
 <div
     class="scrollable-menu"
     aria-labelledby="dropdownMenuButton"
-    (scroll)="onScroll($event)">
-  <div
+    (scroll)="onScroll($event)"
     infiniteScroll
-    [infiniteScrollDistance]="2"
+    [infiniteScrollDistance]="5"
     [infiniteScrollThrottle]="300"
     [infiniteScrollUpDistance]="1.5"
-    [infiniteScrollContainer]="'.scrollable-menu'"
     [fromRoot]="true"
+    [scrollWindow]="false"
     (scrolled)="onScrollDown()">
     <button class="dropdown-item disabled" *ngIf="searchListCollection?.length == 0 && !(isLoadingList | async)">
       {{'submission.sections.general.no-collection' | translate}}
@@ -39,5 +38,5 @@
       <ds-loading message="{{'loading.default' | translate}}">
       </ds-loading>
     </button>
-  </div>
+
 </div>

src/app/shared/collection-dropdown/collection-dropdown.component.spec.ts

@@ -5,21 +5,16 @@ import { By } from '@angular/platform-browser';
 import { getTestScheduler } from 'jasmine-marbles';
 import { TestScheduler } from 'rxjs/testing';
 import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
-import { of as observableOf } from 'rxjs';
 
 import { CollectionDropdownComponent } from './collection-dropdown.component';
-import { RemoteData } from '../../core/data/remote-data';
-import { buildPaginatedList, PaginatedList } from '../../core/data/paginated-list.model';
-import { createSuccessfulRemoteDataObject, createSuccessfulRemoteDataObject$ } from '../remote-data.utils';
+import { buildPaginatedList } from '../../core/data/paginated-list.model';
+import { createSuccessfulRemoteDataObject$ } from '../remote-data.utils';
 import { PageInfo } from '../../core/shared/page-info.model';
 import { Collection } from '../../core/shared/collection.model';
 import { CollectionDataService } from '../../core/data/collection-data.service';
 import { TranslateLoaderMock } from '../mocks/translate-loader.mock';
 import { Community } from '../../core/shared/community.model';
 import { MockElementRef } from '../testing/element-ref.mock';
-import { FollowLinkConfig } from '../utils/follow-link-config.model';
-import { FindListOptions } from '../../core/data/request.models';
-import { Observable } from 'rxjs/internal/Observable';
 
 const community: Community = Object.assign(new Community(), {
   id: 'ce64f48e-2c9b-411a-ac36-ee429c0e6a88',
@@ -99,17 +94,6 @@ const listElementMock = {
   }
 };
 
-// tslint:disable-next-line: max-classes-per-file
-class CollectionDataServiceMock {
-  getAuthorizedCollection(query: string, options: FindListOptions = {}, ...linksToFollow: FollowLinkConfig<Collection>[]): Observable<RemoteData<PaginatedList<Collection>>> {
-    return observableOf(
-      createSuccessfulRemoteDataObject(
-        buildPaginatedList(new PageInfo(), collections)
-      )
-    );
-  }
-}
-
 describe('CollectionDropdownComponent', () => {
   let component: CollectionDropdownComponent;
   let componentAsAny: any;
@@ -117,12 +101,19 @@ describe('CollectionDropdownComponent', () => {
   let scheduler: TestScheduler;
 
   const collectionDataServiceMock: any = jasmine.createSpyObj('CollectionDataService', {
-    getAuthorizedCollection: jasmine.createSpy('getAuthorizedCollection')
+    getAuthorizedCollection: jasmine.createSpy('getAuthorizedCollection'),
+    getAuthorizedCollectionByEntityType: jasmine.createSpy('getAuthorizedCollectionByEntityType')
   });
 
   const paginatedCollection = buildPaginatedList(new PageInfo(), collections);
   const paginatedCollectionRD$ = createSuccessfulRemoteDataObject$(paginatedCollection);
 
+  const paginatedEmptyCollection = buildPaginatedList(new PageInfo(), []);
+  const paginatedEmptyCollectionRD$ = createSuccessfulRemoteDataObject$(paginatedEmptyCollection);
+
+  const paginatedOneElementCollection = buildPaginatedList(new PageInfo(), [collections[0]]);
+  const paginatedOneElementCollectionRD$ = createSuccessfulRemoteDataObject$(paginatedOneElementCollection);
+
   beforeEach(waitForAsync(() => {
     TestBed.configureTestingModule({
       imports: [
@@ -150,6 +141,7 @@ describe('CollectionDropdownComponent', () => {
     component = fixture.componentInstance;
     componentAsAny = component;
     componentAsAny.collectionDataService.getAuthorizedCollection.and.returnValue(paginatedCollectionRD$);
+    componentAsAny.collectionDataService.getAuthorizedCollectionByEntityType.and.returnValue(paginatedCollectionRD$);
   });
 
   it('should init component with collection list', () => {
@@ -225,4 +217,48 @@ describe('CollectionDropdownComponent', () => {
     expect(component.hasNextPage).toEqual(true);
     expect(component.searchListCollection).toEqual([]);
   });
+
+  it('should invoke the method getAuthorizedCollectionByEntityType of CollectionDataService when entityType is set',() => {
+    component.entityType = 'rel';
+    scheduler.schedule(() => fixture.detectChanges());
+    scheduler.flush();
+    expect((component as any).collectionDataService.getAuthorizedCollectionByEntityType).toHaveBeenCalled();
+  });
+
+  it('should emit hasChoice true when totalElements is greater then one', () => {
+    spyOn(component.hasChoice, 'emit').and.callThrough();
+    component.ngOnInit();
+    fixture.detectChanges();
+
+    expect(component.hasChoice.emit).toHaveBeenCalledWith(true);
+  });
+
+  it('should emit hasChoice false when totalElements is not greater then one', () => {
+
+    componentAsAny.collectionDataService.getAuthorizedCollection.and.returnValue(paginatedEmptyCollectionRD$);
+    componentAsAny.collectionDataService.getAuthorizedCollectionByEntityType.and.returnValue(paginatedEmptyCollectionRD$);
+
+    spyOn(component.hasChoice, 'emit').and.callThrough();
+    component.ngOnInit();
+    fixture.detectChanges();
+
+    expect(component.hasChoice.emit).toHaveBeenCalledWith(false);
+  });
+
+  it('should emit theOnlySelectable when totalElements is equal to one', () => {
+
+    componentAsAny.collectionDataService.getAuthorizedCollection.and.returnValue(paginatedOneElementCollectionRD$);
+    componentAsAny.collectionDataService.getAuthorizedCollectionByEntityType.and.returnValue(paginatedOneElementCollectionRD$);
+
+    spyOn(component.theOnlySelectable, 'emit').and.callThrough();
+    component.ngOnInit();
+    fixture.detectChanges();
+
+    const expectedTheOnlySelectable = {
+      communities: [ { id: 'ce64f48e-2c9b-411a-ac36-ee429c0e6a88', name: 'Community 1', uuid: 'ce64f48e-2c9b-411a-ac36-ee429c0e6a88' } ],
+      collection: { id: 'ce64f48e-2c9b-411a-ac36-ee429c0e6a88', uuid: 'ce64f48e-2c9b-411a-ac36-ee429c0e6a88', name: 'Collection 1' }
+    };
+
+    expect(component.theOnlySelectable.emit).toHaveBeenCalledWith(expectedTheOnlySelectable);
+  });
 });

src/app/shared/collection-dropdown/collection-dropdown.component.ts

@@ -4,6 +4,7 @@ import {
   ElementRef,
   EventEmitter,
   HostListener,
+  Input,
   OnDestroy,
   OnInit,
   Output
@@ -11,7 +12,7 @@ import {
 import { FormControl } from '@angular/forms';
 
 import { BehaviorSubject, Observable, Subscription } from 'rxjs';
-import { debounceTime, distinctUntilChanged, map, mergeMap, reduce, startWith, switchMap } from 'rxjs/operators';
+import { debounceTime, distinctUntilChanged, map, mergeMap, reduce, startWith, switchMap, take } from 'rxjs/operators';
 
 import { hasValue } from '../empty.util';
 import { RemoteData } from '../../core/data/remote-data';
@@ -106,6 +107,21 @@ export class CollectionDropdownComponent implements OnInit, OnDestroy {
    */
   currentQuery: string;
 
+  /**
+   * If present this value is used to filter collection list by entity type
+   */
+  @Input() entityType: string;
+
+  /**
+   * Emit to notify whether collections to choice from are more than one
+   */
+  @Output() hasChoice = new EventEmitter<boolean>();
+
+  /**
+   * Emit to notify the only selectable collection.
+   */
+  @Output() theOnlySelectable = new EventEmitter<CollectionListEntry>();
+
   constructor(
     private changeDetectorRef: ChangeDetectorRef,
     private collectionDataService: CollectionDataService,
@@ -190,14 +206,26 @@ export class CollectionDropdownComponent implements OnInit, OnDestroy {
       elementsPerPage: 10,
       currentPage: page
     };
-    this.searchListCollection$ = this.collectionDataService
-      .getAuthorizedCollection(query, findOptions, true, false, followLink('parentCommunity'))
-      .pipe(
+    let searchListService$: Observable<RemoteData<PaginatedList<Collection>>> = null;
+    if (this.entityType) {
+      searchListService$ = this.collectionDataService
+      .getAuthorizedCollectionByEntityType(
+        query,
+        this.entityType,
+        findOptions,
+        false,
+        followLink('parentCommunity'));
+    } else {
+      searchListService$ = this.collectionDataService
+      .getAuthorizedCollection(query, findOptions, true, false, followLink('parentCommunity'));
+    }
+    this.searchListCollection$ = searchListService$.pipe(
         getFirstSucceededRemoteWithNotEmptyData(),
         switchMap((collections: RemoteData<PaginatedList<Collection>>) => {
           if ( (this.searchListCollection.length + findOptions.elementsPerPage) >= collections.payload.totalElements ) {
             this.hasNextPage = false;
           }
+          this.emitSelectionEvents(collections);
           return collections.payload.page;
         }),
         mergeMap((collection: Collection) => collection.parentCommunity.pipe(
@@ -247,4 +275,28 @@ export class CollectionDropdownComponent implements OnInit, OnDestroy {
   hideShowLoader(hideShow: boolean) {
     this.isLoadingList.next(hideShow);
   }
+
+  /**
+   * Emit events related to the number of selectable collections.
+   * hasChoice containing whether there are more then one selectable collections.
+   * theOnlySelectable containing the only collection available.
+   * @param collections
+   * @private
+   */
+  private emitSelectionEvents(collections: RemoteData<PaginatedList<Collection>>) {
+    this.hasChoice.emit(collections.payload.totalElements > 1);
+    if (collections.payload.totalElements === 1) {
+      const collection = collections.payload.page[0];
+      collections.payload.page[0].parentCommunity.pipe(
+        getFirstSucceededRemoteDataPayload(),
+        take(1)
+      ).subscribe((community: Community) => {
+        this.theOnlySelectable.emit({
+          communities: [{ id: community.id, name: community.name, uuid: community.id }],
+          collection: { id: collection.id, uuid: collection.id, name: collection.name }
+        });
+      });
+    }
+  }
+
 }

src/app/shared/dso-selector/dso-selector/authorized-collection-selector/authorized-collection-selector.component.spec.ts

@@ -26,7 +26,8 @@ describe('AuthorizedCollectionSelectorComponent', () => {
       id: 'authorized-collection'
     });
     collectionService = jasmine.createSpyObj('collectionService', {
-      getAuthorizedCollection: createSuccessfulRemoteDataObject$(createPaginatedList([collection]))
+      getAuthorizedCollection: createSuccessfulRemoteDataObject$(createPaginatedList([collection])),
+      getAuthorizedCollectionByEntityType: createSuccessfulRemoteDataObject$(createPaginatedList([collection]))
     });
     notificationsService = jasmine.createSpyObj('notificationsService', ['error']);
     TestBed.configureTestingModule({
@@ -49,12 +50,27 @@ describe('AuthorizedCollectionSelectorComponent', () => {
   });
 
   describe('search', () => {
-    it('should call getAuthorizedCollection and return the authorized collection in a SearchResult', (done) => {
+    describe('when has no entity type', () => {
+      it('should call getAuthorizedCollection and return the authorized collection in a SearchResult', (done) => {
       component.search('', 1).subscribe((resultRD) => {
-        expect(collectionService.getAuthorizedCollection).toHaveBeenCalled();
+          expect(collectionService.getAuthorizedCollection).toHaveBeenCalled();
         expect(resultRD.payload.page.length).toEqual(1);
         expect(resultRD.payload.page[0].indexableObject).toEqual(collection);
-        done();
+          done();
+        });
+      });
+    });
+
+    describe('when has entity type', () => {
+      it('should call getAuthorizedCollectionByEntityType and return the authorized collection in a SearchResult', (done) => {
+        component.entityType = 'test';
+        fixture.detectChanges();
+        component.search('', 1).subscribe((resultRD) => {
+          expect(collectionService.getAuthorizedCollectionByEntityType).toHaveBeenCalled();
+          expect(resultRD.payload.page.length).toEqual(1);
+          expect(resultRD.payload.page[0].indexableObject).toEqual(collection);
+          done();
+        });
       });
     });
   });

src/app/shared/dso-selector/dso-selector/authorized-collection-selector/authorized-collection-selector.component.ts

@@ -1,8 +1,8 @@
-import { Component } from '@angular/core';
+import { Component, Input } from '@angular/core';
 import { DSOSelectorComponent } from '../dso-selector.component';
 import { SearchService } from '../../../../core/shared/search/search.service';
 import { CollectionDataService } from '../../../../core/data/collection-data.service';
-import { Observable } from 'rxjs/internal/Observable';
+import { Observable } from 'rxjs';
 import { getFirstCompletedRemoteData } from '../../../../core/shared/operators';
 import { map } from 'rxjs/operators';
 import { CollectionSearchResult } from '../../../object-collection/shared/collection-search-result.model';
@@ -14,6 +14,8 @@ import { RemoteData } from '../../../../core/data/remote-data';
 import { hasValue } from '../../../empty.util';
 import { NotificationsService } from '../../../notifications/notifications.service';
 import { TranslateService } from '@ngx-translate/core';
+import { Collection } from '../../../../core/shared/collection.model';
+import { FindListOptions } from '../../../../core/data/request.models';
 
 @Component({
   selector: 'ds-authorized-collection-selector',
@@ -24,6 +26,11 @@ import { TranslateService } from '@ngx-translate/core';
  * Component rendering a list of collections to select from
  */
 export class AuthorizedCollectionSelectorComponent extends DSOSelectorComponent {
+  /**
+   * If present this value is used to filter collection list by entity type
+   */
+  @Input() entityType: string;
+
   constructor(protected searchService: SearchService,
               protected collectionDataService: CollectionDataService,
               protected notifcationsService: NotificationsService,
@@ -44,10 +51,23 @@ export class AuthorizedCollectionSelectorComponent extends DSOSelectorComponent
    * @param page  Page to retrieve
    */
   search(query: string, page: number): Observable<RemoteData<PaginatedList<SearchResult<DSpaceObject>>>> {
-    return this.collectionDataService.getAuthorizedCollection(query, Object.assign({
+    let searchListService$: Observable<RemoteData<PaginatedList<Collection>>> = null;
+    const findOptions: FindListOptions = {
       currentPage: page,
       elementsPerPage: this.defaultPagination.pageSize
-    }),true, false, followLink('parentCommunity')).pipe(
+    };
+
+    if (this.entityType) {
+      searchListService$ = this.collectionDataService
+        .getAuthorizedCollectionByEntityType(
+          query,
+          this.entityType,
+          findOptions);
+    } else {
+      searchListService$ = this.collectionDataService
+        .getAuthorizedCollection(query, findOptions, true, false, followLink('parentCommunity'));
+    }
+    return searchListService$.pipe(
       getFirstCompletedRemoteData(),
       map((rd) => Object.assign(new RemoteData(null, null, null, null), rd, {
         payload: hasValue(rd.payload) ? buildPaginatedList(rd.payload.pageInfo, rd.payload.page.map((col) => Object.assign(new CollectionSearchResult(), { indexableObject: col }))) : null,

src/app/shared/dso-selector/modal-wrappers/create-item-parent-selector/create-item-parent-selector.component.html

@@ -6,6 +6,9 @@
   </div>
   <div class="modal-body">
     <h5 *ngIf="header" class="px-2">{{header | translate}}</h5>
-    <ds-authorized-collection-selector [currentDSOId]="dsoRD?.payload.uuid" [types]="selectorTypes" (onSelect)="selectObject($event)"></ds-authorized-collection-selector>
+    <ds-authorized-collection-selector [currentDSOId]="dsoRD?.payload.uuid"
+                                       [entityType]="entityType"
+                                       [types]="selectorTypes"
+                                       (onSelect)="selectObject($event)"></ds-authorized-collection-selector>
   </div>
 </div>

src/app/shared/dso-selector/modal-wrappers/create-item-parent-selector/create-item-parent-selector.component.spec.ts

@@ -69,4 +69,10 @@ describe('CreateItemParentSelectorComponent', () => {
     expect(router.navigate).toHaveBeenCalledWith(['/submit'], { queryParams: { collection: collection.uuid } });
   });
 
+  it('should call navigate on the router with entityType parameter', () => {
+    const entityType = 'Person';
+    component.entityType = entityType;
+    component.navigate(collection);
+    expect(router.navigate).toHaveBeenCalledWith(['/submit'], { queryParams: { collection: collection.uuid, entityType: entityType } });
+  });
 });

src/app/shared/dso-selector/modal-wrappers/create-item-parent-selector/create-item-parent-selector.component.ts

@@ -1,4 +1,4 @@
-import { Component, OnInit } from '@angular/core';
+import { Component, Input, OnInit } from '@angular/core';
 import { ActivatedRoute, NavigationExtras, Router } from '@angular/router';
 import { DSpaceObjectType } from '../../../../core/shared/dspace-object-type.model';
 import { DSpaceObject } from '../../../../core/shared/dspace-object.model';
@@ -22,6 +22,11 @@ export class CreateItemParentSelectorComponent extends DSOSelectorModalWrapperCo
   action = SelectorActionType.CREATE;
   header = 'dso-selector.create.item.sub-level';
 
+  /**
+   * If present this value is used to filter collection list by entity type
+   */
+  @Input() entityType: string;
+
   constructor(protected activeModal: NgbActiveModal, protected route: ActivatedRoute, private router: Router) {
     super(activeModal, route);
   }
@@ -35,6 +40,9 @@ export class CreateItemParentSelectorComponent extends DSOSelectorModalWrapperCo
         ['collection']: dso.uuid,
       }
     };
+    if (this.entityType) {
+      navigationExtras.queryParams.entityType = this.entityType;
+    }
     this.router.navigate(['/submit'], navigationExtras);
   }
 }