ng-hotkeys
Version:
ng-hotkeys for Angular 14+
83 lines • 12 kB
JavaScript
import { BasePortalOutlet } from './portal';
/**
* @ignore
* A PortalOutlet for attaching portals to an arbitrary DOM element outside of the Angular
* application context.
*/
export class DomPortalOutlet extends BasePortalOutlet {
constructor(
/** Element into which the content is projected. */
outletElement, _componentFactoryResolver, _appRef, _defaultInjector) {
super();
this.outletElement = outletElement;
this._componentFactoryResolver = _componentFactoryResolver;
this._appRef = _appRef;
this._defaultInjector = _defaultInjector;
}
/**
* Attach the given ComponentPortal to DOM element using the ComponentFactoryResolver.
* @param portal Portal to be attached
* @returns Reference to the created component.
*/
attachComponentPortal(portal) {
const resolver = portal.componentFactoryResolver || this._componentFactoryResolver;
const componentFactory = resolver.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 view to the application.
if (portal.viewContainerRef) {
componentRef = portal.viewContainerRef.createComponent(componentFactory, portal.viewContainerRef.length, portal.injector || portal.viewContainerRef.injector);
this.setDisposeFn(() => componentRef.destroy());
}
else {
componentRef = componentFactory.create(portal.injector || this._defaultInjector);
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.
this.outletElement.appendChild(this._getComponentRootNode(componentRef));
return componentRef;
}
/**
* Attaches a template portal to the DOM as an embedded view.
* @param portal Portal to be attached.
* @returns Reference to the created embedded view.
*/
attachTemplatePortal(portal) {
let viewContainer = portal.viewContainerRef;
let viewRef = viewContainer.createEmbeddedView(portal.templateRef, portal.context);
viewRef.detectChanges();
// The method `createEmbeddedView` will add the view as a child of the viewContainer.
// But for the DomPortalOutlet the view can be added everywhere in the DOM
// (e.g Overlay Container) To move the view to the specified host element. We just
// re-append the existing root nodes.
viewRef.rootNodes.forEach(rootNode => this.outletElement.appendChild(rootNode));
this.setDisposeFn((() => {
let index = viewContainer.indexOf(viewRef);
if (index !== -1) {
viewContainer.remove(index);
}
}));
return viewRef;
}
/**
* Clears out a portal from the DOM.
*/
dispose() {
super.dispose();
if (this.outletElement.parentNode != null) {
this.outletElement.parentNode.removeChild(this.outletElement);
}
}
/** Gets the root HTMLElement for an instantiated component. */
_getComponentRootNode(componentRef) {
return componentRef.hostView.rootNodes[0];
}
}
//# 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{\n  ComponentFactoryResolver,\n  ComponentRef,\n  EmbeddedViewRef,\n  ApplicationRef,\n  Injector,\n} from '@angular/core';\nimport {BasePortalOutlet, ComponentPortal, TemplatePortal} from './portal';\n\n\n/**\n * @ignore\n * A PortalOutlet for attaching portals to an arbitrary DOM element outside of the Angular\n * application context.\n */\nexport class DomPortalOutlet extends BasePortalOutlet {\n  constructor(\n      /** Element into which the content is projected. */\n      public outletElement: Element,\n      private _componentFactoryResolver: ComponentFactoryResolver,\n      private _appRef: ApplicationRef,\n      private _defaultInjector: Injector) {\n    super();\n  }\n\n  /**\n   * Attach the given ComponentPortal to DOM element using the ComponentFactoryResolver.\n   * @param portal Portal to be attached\n   * @returns Reference to the created component.\n   */\n  attachComponentPortal<T>(portal: ComponentPortal<T>): ComponentRef<T> {\n    const resolver = portal.componentFactoryResolver || this._componentFactoryResolver;\n    const componentFactory = resolver.resolveComponentFactory(portal.component);\n    let componentRef: ComponentRef<T>;\n\n    // If the portal specifies a ViewContainerRef, we will use that as the attachment point\n    // for the component (in terms of Angular's component tree, not rendering).\n    // When the ViewContainerRef is missing, we use the factory to create the component directly\n    // and then manually attach the view to the application.\n    if (portal.viewContainerRef) {\n      componentRef = portal.viewContainerRef.createComponent(\n          componentFactory,\n          portal.viewContainerRef.length,\n          portal.injector || portal.viewContainerRef.injector);\n\n      this.setDisposeFn(() => componentRef.destroy());\n    } else {\n      componentRef = componentFactory.create(portal.injector || this._defaultInjector);\n      this._appRef.attachView(componentRef.hostView);\n      this.setDisposeFn(() => {\n        this._appRef.detachView(componentRef.hostView);\n        componentRef.destroy();\n      });\n    }\n    // At this point the component has been instantiated, so we move it to the location in the DOM\n    // where we want it to be rendered.\n    this.outletElement.appendChild(this._getComponentRootNode(componentRef));\n\n    return componentRef;\n  }\n\n  /**\n   * Attaches a template portal to the DOM as an embedded view.\n   * @param portal Portal to be attached.\n   * @returns Reference to the created embedded view.\n   */\n  attachTemplatePortal<C>(portal: TemplatePortal<C>): EmbeddedViewRef<C> {\n    let viewContainer = portal.viewContainerRef;\n    let viewRef = viewContainer.createEmbeddedView(portal.templateRef, portal.context);\n    viewRef.detectChanges();\n\n    // The method `createEmbeddedView` will add the view as a child of the viewContainer.\n    // But for the DomPortalOutlet the view can be added everywhere in the DOM\n    // (e.g Overlay Container) To move the view to the specified host element. We just\n    // re-append the existing root nodes.\n    viewRef.rootNodes.forEach(rootNode => this.outletElement.appendChild(rootNode));\n\n    this.setDisposeFn((() => {\n      let index = viewContainer.indexOf(viewRef);\n      if (index !== -1) {\n        viewContainer.remove(index);\n      }\n    }));\n\n    return viewRef;\n  }\n\n  /**\n   * Clears out a portal from the DOM.\n   */\n  dispose(): void {\n    super.dispose();\n    if (this.outletElement.parentNode != null) {\n      this.outletElement.parentNode.removeChild(this.outletElement);\n    }\n  }\n\n  /** Gets the root HTMLElement for an instantiated component. */\n  private _getComponentRootNode(componentRef: ComponentRef<any>): HTMLElement {\n    return (componentRef.hostView as EmbeddedViewRef<any>).rootNodes[0] as HTMLElement;\n  }\n}\n"]}