diff --git a/src/app/admin/admin-search-page/admin-search-results/admin-search-result-grid-element/item-search-result/item-admin-search-result-grid-element.component.ts b/src/app/admin/admin-search-page/admin-search-results/admin-search-result-grid-element/item-search-result/item-admin-search-result-grid-element.component.ts index dab6694f36..481145ab8b 100644 --- a/src/app/admin/admin-search-page/admin-search-results/admin-search-result-grid-element/item-search-result/item-admin-search-result-grid-element.component.ts +++ b/src/app/admin/admin-search-page/admin-search-results/admin-search-result-grid-element/item-search-result/item-admin-search-result-grid-element.component.ts @@ -1,4 +1,4 @@ -import { Component, ComponentFactoryResolver, ElementRef, OnInit, ViewChild } from '@angular/core'; +import { Component, ElementRef, OnInit, ViewChild, ComponentRef, OnDestroy } from '@angular/core'; import { Item } from '../../../../../core/shared/item.model'; import { ViewMode } from '../../../../../core/shared/view-mode.model'; import { @@ -14,6 +14,7 @@ import { GenericConstructor } from '../../../../../core/shared/generic-construct import { ListableObjectDirective } from '../../../../../shared/object-collection/shared/listable-object/listable-object.directive'; import { ThemeService } from '../../../../../shared/theme-support/theme.service'; import { DSONameService } from '../../../../../core/breadcrumbs/dso-name.service'; +import { hasValue } from '../../../../../shared/empty.util'; @listableObjectComponent(ItemSearchResult, ViewMode.GridElement, Context.AdminSearch) @Component({ @@ -24,17 +25,18 @@ import { DSONameService } from '../../../../../core/breadcrumbs/dso-name.service /** * The component for displaying a list element for an item search result on the admin search page */ -export class ItemAdminSearchResultGridElementComponent extends SearchResultGridElementComponent implements OnInit { +export class ItemAdminSearchResultGridElementComponent extends SearchResultGridElementComponent implements OnDestroy, OnInit { @ViewChild(ListableObjectDirective, { static: true }) listableObjectDirective: ListableObjectDirective; @ViewChild('badges', { static: true }) badges: ElementRef; @ViewChild('buttons', { static: true }) buttons: ElementRef; + protected compRef: ComponentRef; + constructor( public dsoNameService: DSONameService, protected truncatableService: TruncatableService, protected bitstreamDataService: BitstreamDataService, private themeService: ThemeService, - private componentFactoryResolver: ComponentFactoryResolver, ) { super(dsoNameService, truncatableService, bitstreamDataService); } @@ -44,23 +46,32 @@ export class ItemAdminSearchResultGridElementComponent extends SearchResultGridE */ ngOnInit(): void { super.ngOnInit(); - const componentFactory = this.componentFactoryResolver.resolveComponentFactory(this.getComponent()); + const component: GenericConstructor = this.getComponent(); const viewContainerRef = this.listableObjectDirective.viewContainerRef; viewContainerRef.clear(); - const componentRef = viewContainerRef.createComponent( - componentFactory, - 0, - undefined, - [ - [this.badges.nativeElement], - [this.buttons.nativeElement] - ]); - (componentRef.instance as any).object = this.object; - (componentRef.instance as any).index = this.index; - (componentRef.instance as any).linkType = this.linkType; - (componentRef.instance as any).listID = this.listID; + this.compRef = viewContainerRef.createComponent( + component, { + index: 0, + injector: undefined, + projectableNodes: [ + [this.badges.nativeElement], + [this.buttons.nativeElement], + ], + }, + ); + (this.compRef.instance as any).object = this.object; + (this.compRef.instance as any).index = this.index; + (this.compRef.instance as any).linkType = this.linkType; + (this.compRef.instance as any).listID = this.listID; + } + + ngOnDestroy(): void { + if (hasValue(this.compRef)) { + this.compRef.destroy(); + this.compRef = undefined; + } } /** diff --git a/src/app/admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.ts b/src/app/admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.ts index fd9d21e227..0c4527070d 100644 --- a/src/app/admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.ts +++ b/src/app/admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.ts @@ -1,4 +1,4 @@ -import { Component, ComponentFactoryResolver, ElementRef, ViewChild } from '@angular/core'; +import { Component, ElementRef, ViewChild, ComponentRef, OnDestroy, OnInit } from '@angular/core'; import { Item } from '../../../../../core/shared/item.model'; import { ViewMode } from '../../../../../core/shared/view-mode.model'; import { @@ -24,6 +24,7 @@ import { take } from 'rxjs/operators'; import { WorkflowItemSearchResult } from '../../../../../shared/object-collection/shared/workflow-item-search-result.model'; import { ThemeService } from '../../../../../shared/theme-support/theme.service'; import { DSONameService } from '../../../../../core/breadcrumbs/dso-name.service'; +import { hasValue } from '../../../../../shared/empty.util'; @listableObjectComponent(WorkflowItemSearchResult, ViewMode.GridElement, Context.AdminWorkflowSearch) @Component({ @@ -34,7 +35,7 @@ import { DSONameService } from '../../../../../core/breadcrumbs/dso-name.service /** * The component for displaying a grid element for an workflow item on the admin workflow search page */ -export class WorkflowItemSearchResultAdminWorkflowGridElementComponent extends SearchResultGridElementComponent { +export class WorkflowItemSearchResultAdminWorkflowGridElementComponent extends SearchResultGridElementComponent implements OnDestroy, OnInit { /** * Directive used to render the dynamic component in */ @@ -55,9 +56,10 @@ export class WorkflowItemSearchResultAdminWorkflowGridElementComponent extends S */ public item$: Observable; + protected compRef: ComponentRef; + constructor( public dsoNameService: DSONameService, - private componentFactoryResolver: ComponentFactoryResolver, private linkService: LinkService, protected truncatableService: TruncatableService, private themeService: ThemeService, @@ -75,28 +77,37 @@ export class WorkflowItemSearchResultAdminWorkflowGridElementComponent extends S this.dso = this.linkService.resolveLink(this.dso, followLink('item')); this.item$ = (this.dso.item as Observable>).pipe(getAllSucceededRemoteData(), getRemoteDataPayload()); this.item$.pipe(take(1)).subscribe((item: Item) => { - const componentFactory = this.componentFactoryResolver.resolveComponentFactory(this.getComponent(item)); + const component: GenericConstructor = this.getComponent(item); const viewContainerRef = this.listableObjectDirective.viewContainerRef; viewContainerRef.clear(); - const componentRef = viewContainerRef.createComponent( - componentFactory, - 0, - undefined, - [ - [this.badges.nativeElement], - [this.buttons.nativeElement] - ]); - (componentRef.instance as any).object = item; - (componentRef.instance as any).index = this.index; - (componentRef.instance as any).linkType = this.linkType; - (componentRef.instance as any).listID = this.listID; - componentRef.changeDetectorRef.detectChanges(); + this.compRef = viewContainerRef.createComponent( + component, { + index: 0, + injector: undefined, + projectableNodes: [ + [this.badges.nativeElement], + [this.buttons.nativeElement], + ], + }, + ); + (this.compRef.instance as any).object = item; + (this.compRef.instance as any).index = this.index; + (this.compRef.instance as any).linkType = this.linkType; + (this.compRef.instance as any).listID = this.listID; + this.compRef.changeDetectorRef.detectChanges(); } ); } + ngOnDestroy(): void { + if (hasValue(this.compRef)) { + this.compRef.destroy(); + this.compRef = undefined; + } + } + /** * Fetch the component depending on the item's entity type, view mode and context * @returns {GenericConstructor} diff --git a/src/app/shared/loading/themed-loading.component.ts b/src/app/shared/loading/themed-loading.component.ts index 48773d75c8..de2d602fc4 100644 --- a/src/app/shared/loading/themed-loading.component.ts +++ b/src/app/shared/loading/themed-loading.component.ts @@ -1,4 +1,4 @@ -import { Component, Input, ComponentFactoryResolver, ChangeDetectorRef } from '@angular/core'; +import { Component, Input, ChangeDetectorRef } from '@angular/core'; import { ThemedComponent } from '../theme-support/themed.component'; import { LoadingComponent } from './loading.component'; import { ThemeService } from '../theme-support/theme.service'; @@ -20,11 +20,10 @@ export class ThemedLoadingComponent extends ThemedComponent { protected inAndOutputNames: (keyof LoadingComponent & keyof this)[] = ['message', 'showMessage', 'spinner']; constructor( - protected resolver: ComponentFactoryResolver, protected cdr: ChangeDetectorRef, protected themeService: ThemeService ) { - super(resolver, cdr, themeService); + super(cdr, themeService); } protected getComponentName(): string { diff --git a/src/app/shared/metadata-representation/metadata-representation-loader.component.ts b/src/app/shared/metadata-representation/metadata-representation-loader.component.ts index 42ee093278..a72177e328 100644 --- a/src/app/shared/metadata-representation/metadata-representation-loader.component.ts +++ b/src/app/shared/metadata-representation/metadata-representation-loader.component.ts @@ -1,4 +1,4 @@ -import { Component, ComponentFactoryResolver, Inject, Input, OnInit, ViewChild, OnChanges, SimpleChanges, ComponentRef, ViewContainerRef, ComponentFactory } from '@angular/core'; +import { Component, Inject, Input, OnInit, ViewChild, OnChanges, OnDestroy, SimpleChanges, ComponentRef, ViewContainerRef } from '@angular/core'; import { MetadataRepresentation, MetadataRepresentationType @@ -18,8 +18,7 @@ import { ThemeService } from '../theme-support/theme.service'; /** * Component for determining what component to use depending on the item's entity type (dspace.entity.type), its metadata representation and, optionally, its context */ -export class MetadataRepresentationLoaderComponent implements OnInit, OnChanges { - +export class MetadataRepresentationLoaderComponent implements OnDestroy, OnInit, OnChanges { /** * The item or metadata to determine the component for */ @@ -55,7 +54,6 @@ export class MetadataRepresentationLoaderComponent implements OnInit, OnChanges ]; constructor( - private componentFactoryResolver: ComponentFactoryResolver, private themeService: ThemeService, @Inject(METADATA_REPRESENTATION_COMPONENT_FACTORY) private getMetadataRepresentationComponent: (entityType: string, mdRepresentationType: MetadataRepresentationType, context: Context, theme: string) => GenericConstructor, ) { @@ -65,7 +63,9 @@ export class MetadataRepresentationLoaderComponent implements OnInit, OnChanges * Set up the dynamic child component */ ngOnInit(): void { - this.instantiateComponent(); + if (hasNoValue(this.compRef)) { + this.instantiateComponent(); + } } /** @@ -88,12 +88,12 @@ export class MetadataRepresentationLoaderComponent implements OnInit, OnChanges } private instantiateComponent(changes?: SimpleChanges): void { - const componentFactory: ComponentFactory = this.componentFactoryResolver.resolveComponentFactory(this.getComponent()); + const component: GenericConstructor = this.getComponent(); const viewContainerRef: ViewContainerRef = this.mdRepDirective.viewContainerRef; viewContainerRef.clear(); - this.compRef = viewContainerRef.createComponent(componentFactory); + this.compRef = viewContainerRef.createComponent(component); if (hasValue(changes)) { this.ngOnChanges(changes); @@ -102,6 +102,13 @@ export class MetadataRepresentationLoaderComponent implements OnInit, OnChanges } } + ngOnDestroy(): void { + if (hasValue(this.compRef)) { + this.compRef.destroy(); + this.compRef = undefined; + } + } + /** * Fetch the component depending on the item's entity type, metadata representation type and context * @returns {string} diff --git a/src/app/shared/mydspace-actions/claimed-task/switcher/claimed-task-actions-loader.component.ts b/src/app/shared/mydspace-actions/claimed-task/switcher/claimed-task-actions-loader.component.ts index c0dc1cad02..e3d3a4f7ef 100644 --- a/src/app/shared/mydspace-actions/claimed-task/switcher/claimed-task-actions-loader.component.ts +++ b/src/app/shared/mydspace-actions/claimed-task/switcher/claimed-task-actions-loader.component.ts @@ -1,8 +1,8 @@ import { Component, - ComponentFactoryResolver, EventEmitter, Input, + OnDestroy, OnInit, Output, ViewChild, @@ -27,7 +27,7 @@ import { ClaimedTaskActionsAbstractComponent } from '../abstract/claimed-task-ac * Component for loading a ClaimedTaskAction component depending on the "option" input * Passes on the ClaimedTask to the component and subscribes to the processCompleted output */ -export class ClaimedTaskActionsLoaderComponent implements OnInit, OnChanges { +export class ClaimedTaskActionsLoaderComponent implements OnInit, OnChanges, OnDestroy { /** * The item object that belonging to the ClaimedTask object */ @@ -73,14 +73,13 @@ export class ClaimedTaskActionsLoaderComponent implements OnInit, OnChanges { 'processCompleted', ]; - constructor(private componentFactoryResolver: ComponentFactoryResolver) { - } - /** * Fetch, create and initialize the relevant component */ ngOnInit(): void { - this.instantiateComponent(); + if (hasNoValue(this.compRef)) { + this.instantiateComponent(); + } } /** @@ -105,12 +104,10 @@ export class ClaimedTaskActionsLoaderComponent implements OnInit, OnChanges { private instantiateComponent(changes?: SimpleChanges): void { const comp = this.getComponentByWorkflowTaskOption(this.option); if (hasValue(comp)) { - const componentFactory = this.componentFactoryResolver.resolveComponentFactory(comp); - const viewContainerRef = this.claimedTaskActionsDirective.viewContainerRef; viewContainerRef.clear(); - this.compRef = viewContainerRef.createComponent(componentFactory); + this.compRef = viewContainerRef.createComponent(comp); if (hasValue(changes)) { this.ngOnChanges(changes); @@ -135,4 +132,11 @@ export class ClaimedTaskActionsLoaderComponent implements OnInit, OnChanges { }); } } + + ngOnDestroy(): void { + if (hasValue(this.compRef)) { + this.compRef.destroy(); + this.compRef = undefined; + } + } } diff --git a/src/app/shared/object-collection/shared/listable-object/listable-object-component-loader.component.ts b/src/app/shared/object-collection/shared/listable-object/listable-object-component-loader.component.ts index 7a3cc42bf5..3152f5c7b3 100644 --- a/src/app/shared/object-collection/shared/listable-object/listable-object-component-loader.component.ts +++ b/src/app/shared/object-collection/shared/listable-object/listable-object-component-loader.component.ts @@ -125,7 +125,9 @@ export class ListableObjectComponentLoaderComponent implements OnInit, OnChanges * Setup the dynamic child component */ ngOnInit(): void { - this.instantiateComponent(this.object); + if (hasNoValue(this.compRef)) { + this.instantiateComponent(this.object); + } } /** @@ -147,7 +149,11 @@ export class ListableObjectComponentLoaderComponent implements OnInit, OnChanges } } - ngOnDestroy() { + ngOnDestroy(): void { + if (hasValue(this.compRef)) { + this.compRef.destroy(); + this.compRef = undefined; + } this.subs .filter((subscription) => hasValue(subscription)) .forEach((subscription) => subscription.unsubscribe()); diff --git a/src/app/shared/theme-support/themed.component.ts b/src/app/shared/theme-support/themed.component.ts index 6b0727ccdd..63df634600 100644 --- a/src/app/shared/theme-support/themed.component.ts +++ b/src/app/shared/theme-support/themed.component.ts @@ -6,7 +6,6 @@ import { SimpleChanges, OnInit, OnDestroy, - ComponentFactoryResolver, ChangeDetectorRef, OnChanges, HostBinding, @@ -47,7 +46,6 @@ export abstract class ThemedComponent implements OnInit, OnDestroy, OnChanges @HostBinding('attr.data-used-theme') usedTheme: string; constructor( - protected resolver: ComponentFactoryResolver, protected cdr: ChangeDetectorRef, protected themeService: ThemeService, ) { @@ -120,8 +118,9 @@ export abstract class ThemedComponent implements OnInit, OnDestroy, OnChanges } this.lazyLoadSub = this.lazyLoadObs.subscribe(([simpleChanges, constructor]: [SimpleChanges, GenericConstructor]) => { - const factory = this.resolver.resolveComponentFactory(constructor); - this.compRef = this.vcr.createComponent(factory, undefined, undefined, [this.themedElementContent.nativeElement.childNodes]); + this.compRef = this.vcr.createComponent(constructor, { + projectableNodes: [this.themedElementContent.nativeElement.childNodes], + }); if (hasValue(simpleChanges)) { this.ngOnChanges(simpleChanges); } else {