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Diffstat (limited to 'catalog-ui/src/app/ng2/services/dynamic-component.service.ts')
-rw-r--r-- | catalog-ui/src/app/ng2/services/dynamic-component.service.ts | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/catalog-ui/src/app/ng2/services/dynamic-component.service.ts b/catalog-ui/src/app/ng2/services/dynamic-component.service.ts new file mode 100644 index 0000000000..29dd1e9e09 --- /dev/null +++ b/catalog-ui/src/app/ng2/services/dynamic-component.service.ts @@ -0,0 +1,28 @@ +import { + Injectable, Type, ViewContainerRef, ApplicationRef, ComponentFactory, ComponentFactoryResolver, ComponentRef +} from '@angular/core'; + + + +@Injectable() +export class DynamicComponentService { + + constructor(private componentFactoryResolver: ComponentFactoryResolver, private applicationRef: ApplicationRef) { } + + //Creates a component dynamically (aka during runtime). If a view container is not specified, it will append the new component to the app root. + //To subscribe to an event from invoking component: componentRef.instance.clicked.subscribe((m) => console.log(m.name)); + public createDynamicComponent<T>(componentType: Type<T>, viewContainerRef?:ViewContainerRef): ComponentRef<T> { + + viewContainerRef = viewContainerRef || this.getRootViewContainerRef(); + viewContainerRef.clear(); + + let factory: ComponentFactory<T> = this.componentFactoryResolver.resolveComponentFactory(componentType); //Ref: https://angular.io/guide/dynamic-component-loader + let componentRef: ComponentRef<T> = viewContainerRef.createComponent(factory); + return componentRef; + } + + + private getRootViewContainerRef(): ViewContainerRef { + return this.applicationRef.components[0].instance.viewContainerRef; + } +};
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