VLEX/BPM-UI/node_modules/ngx-toastr/esm2015/portal/dom-portal-host.js

import { BasePortalHost } from './portal';
/**
 * A PortalHost for attaching portals to an arbitrary DOM element outside of the Angular
 * application context.
 *
 * This is the only part of the portal core that directly touches the DOM.
 */
export class DomPortalHost extends BasePortalHost {
    constructor(_hostDomElement, _componentFactoryResolver, _appRef) {
        super();
        this._hostDomElement = _hostDomElement;
        this._componentFactoryResolver = _componentFactoryResolver;
        this._appRef = _appRef;
    }
    /**
     * Attach the given ComponentPortal to DOM element using the ComponentFactoryResolver.
     * @param portal Portal to be attached
     */
    attachComponentPortal(portal, newestOnTop) {
        const componentFactory = this._componentFactoryResolver.resolveComponentFactory(portal.component);
        let componentRef;
        // If the portal specifies a ViewContainerRef, we will use that as the attachment point
        // for the component (in terms of Angular's component tree, not rendering).
        // When the ViewContainerRef is missing, we use the factory to create the component directly
        // and then manually attach the ChangeDetector for that component to the application (which
        // happens automatically when using a ViewContainer).
        componentRef = componentFactory.create(portal.injector);
        // When creating a component outside of a ViewContainer, we need to manually register
        // its ChangeDetector with the application. This API is unfortunately not yet published
        // in Angular core. The change detector must also be deregistered when the component
        // is destroyed to prevent memory leaks.
        this._appRef.attachView(componentRef.hostView);
        this.setDisposeFn(() => {
            this._appRef.detachView(componentRef.hostView);
            componentRef.destroy();
        });
        // At this point the component has been instantiated, so we move it to the location in the DOM
        // where we want it to be rendered.
        if (newestOnTop) {
            this._hostDomElement.insertBefore(this._getComponentRootNode(componentRef), this._hostDomElement.firstChild);
        }
        else {
            this._hostDomElement.appendChild(this._getComponentRootNode(componentRef));
        }
        return componentRef;
    }
    /** Gets the root HTMLElement for an instantiated component. */
    _getComponentRootNode(componentRef) {
        return componentRef.hostView.rootNodes[0];
    }
}
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9zdERvbUVsZW1lbnQuYXBwZW5kQ2hpbGQoXG4gICAgICAgIHRoaXMuX2dldENvbXBvbmVudFJvb3ROb2RlKGNvbXBvbmVudFJlZiksXG4gICAgICApO1xuICAgIH1cblxuICAgIHJldHVybiBjb21wb25lbnRSZWY7XG4gIH1cblxuICAvKiogR2V0cyB0aGUgcm9vdCBIVE1MRWxlbWVudCBmb3IgYW4gaW5zdGFudGlhdGVkIGNvbXBvbmVudC4gKi9cbiAgcHJpdmF0ZSBfZ2V0Q29tcG9uZW50Um9vdE5vZGUoY29tcG9uZW50UmVmOiBDb21wb25lbnRSZWY8YW55Pik6IEhUTUxFbGVtZW50IHtcbiAgICByZXR1cm4gKGNvbXBvbmVudFJlZi5ob3N0VmlldyBhcyBFbWJlZGRlZFZpZXdSZWY8YW55Pikucm9vdE5vZGVzWzBdIGFzIEhUTUxFbGVtZW50O1xuICB9XG59XG4iXX0=