mirror of https://github.com/Chocobozzz/PeerTube
58 lines
1.5 KiB
TypeScript
58 lines
1.5 KiB
TypeScript
import {
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ApplicationRef,
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ComponentFactoryResolver,
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ComponentRef,
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EmbeddedViewRef,
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Injectable,
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Injector,
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OnChanges,
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SimpleChange,
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SimpleChanges,
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Type
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} from '@angular/core'
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@Injectable()
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export class DynamicElementService {
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constructor (
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private injector: Injector,
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private applicationRef: ApplicationRef,
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private componentFactoryResolver: ComponentFactoryResolver
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) { }
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createElement <T> (ofComponent: Type<T>) {
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const div = document.createElement('div')
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const component = this.componentFactoryResolver.resolveComponentFactory(ofComponent)
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.create(this.injector, [], div)
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return component
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}
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injectElement <T> (wrapper: HTMLElement, componentRef: ComponentRef<T>) {
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const hostView = componentRef.hostView as EmbeddedViewRef<any>
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this.applicationRef.attachView(hostView)
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wrapper.appendChild(hostView.rootNodes[0])
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}
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setModel <T> (componentRef: ComponentRef<T>, attributes: Partial<T>) {
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const changes: SimpleChanges = {}
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for (const key of Object.keys(attributes)) {
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const previousValue = componentRef.instance[key]
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const newValue = attributes[key]
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componentRef.instance[key] = newValue
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changes[key] = new SimpleChange(previousValue, newValue, previousValue === undefined)
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}
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const component = componentRef.instance
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if (typeof (component as unknown as OnChanges).ngOnChanges === 'function') {
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(component as unknown as OnChanges).ngOnChanges(changes)
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}
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componentRef.changeDetectorRef.detectChanges()
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}
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}
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