@angular/cdk
Version:
Angular Material Component Development Kit
134 lines • 18.3 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { BasePortalOutlet } from './portal';
/**
* 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,
/**
* @deprecated `_document` Parameter to be made required.
* @breaking-change 10.0.0
*/
_document) {
super();
this.outletElement = outletElement;
this._componentFactoryResolver = _componentFactoryResolver;
this._appRef = _appRef;
this._defaultInjector = _defaultInjector;
/**
* Attaches a DOM portal by transferring its content into the outlet.
* @param portal Portal to be attached.
* @deprecated To be turned into a method.
* @breaking-change 10.0.0
*/
this.attachDomPortal = (portal) => {
// @breaking-change 10.0.0 Remove check and error once the
// `_document` constructor parameter is required.
if (!this._document && (typeof ngDevMode === 'undefined' || ngDevMode)) {
throw Error('Cannot attach DOM portal without _document constructor parameter');
}
const element = portal.element;
if (!element.parentNode && (typeof ngDevMode === 'undefined' || ngDevMode)) {
throw Error('DOM portal content must be attached to a parent node.');
}
// Anchor used to save the element's previous position so
// that we can restore it when the portal is detached.
const anchorNode = this._document.createComment('dom-portal');
element.parentNode.insertBefore(anchorNode, element);
this.outletElement.appendChild(element);
this._attachedPortal = portal;
super.setDisposeFn(() => {
// We can't use `replaceWith` here because IE doesn't support it.
if (anchorNode.parentNode) {
anchorNode.parentNode.replaceChild(element, anchorNode);
}
});
};
this._document = _document;
}
/**
* 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));
this._attachedPortal = portal;
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);
// 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));
// Note that we want to detect changes after the nodes have been moved so that
// any directives inside the portal that are looking at the DOM inside a lifecycle
// hook won't be invoked too early.
viewRef.detectChanges();
this.setDisposeFn(() => {
let index = viewContainer.indexOf(viewRef);
if (index !== -1) {
viewContainer.remove(index);
}
});
this._attachedPortal = portal;
// TODO(jelbourn): Return locals from view.
return viewRef;
}
/**
* Clears out a portal from the DOM.
*/
dispose() {
super.dispose();
this.outletElement.remove();
}
/** Gets the root HTMLElement for an instantiated component. */
_getComponentRootNode(componentRef) {
return componentRef.hostView.rootNodes[0];
}
}
/**
* @deprecated Use `DomPortalOutlet` instead.
* @breaking-change 9.0.0
*/
export class DomPortalHost extends DomPortalOutlet {
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {\n  ComponentFactoryResolver,\n  ComponentRef,\n  EmbeddedViewRef,\n  ApplicationRef,\n  Injector,\n} from '@angular/core';\nimport {BasePortalOutlet, ComponentPortal, TemplatePortal, DomPortal} from './portal';\n\n/**\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  private _document: Document;\n\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\n    /**\n     * @deprecated `_document` Parameter to be made required.\n     * @breaking-change 10.0.0\n     */\n    _document?: any,\n  ) {\n    super();\n    this._document = _document;\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\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    this._attachedPortal = portal;\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\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    // Note that we want to detect changes after the nodes have been moved so that\n    // any directives inside the portal that are looking at the DOM inside a lifecycle\n    // hook won't be invoked too early.\n    viewRef.detectChanges();\n\n    this.setDisposeFn(() => {\n      let index = viewContainer.indexOf(viewRef);\n      if (index !== -1) {\n        viewContainer.remove(index);\n      }\n    });\n\n    this._attachedPortal = portal;\n\n    // TODO(jelbourn): Return locals from view.\n    return viewRef;\n  }\n\n  /**\n   * Attaches a DOM portal by transferring its content into the outlet.\n   * @param portal Portal to be attached.\n   * @deprecated To be turned into a method.\n   * @breaking-change 10.0.0\n   */\n  override attachDomPortal = (portal: DomPortal) => {\n    // @breaking-change 10.0.0 Remove check and error once the\n    // `_document` constructor parameter is required.\n    if (!this._document && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n      throw Error('Cannot attach DOM portal without _document constructor parameter');\n    }\n\n    const element = portal.element;\n    if (!element.parentNode && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n      throw Error('DOM portal content must be attached to a parent node.');\n    }\n\n    // Anchor used to save the element's previous position so\n    // that we can restore it when the portal is detached.\n    const anchorNode = this._document.createComment('dom-portal');\n\n    element.parentNode!.insertBefore(anchorNode, element);\n    this.outletElement.appendChild(element);\n    this._attachedPortal = portal;\n\n    super.setDisposeFn(() => {\n      // We can't use `replaceWith` here because IE doesn't support it.\n      if (anchorNode.parentNode) {\n        anchorNode.parentNode.replaceChild(element, anchorNode);\n      }\n    });\n  };\n\n  /**\n   * Clears out a portal from the DOM.\n   */\n  override dispose(): void {\n    super.dispose();\n    this.outletElement.remove();\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\n/**\n * @deprecated Use `DomPortalOutlet` instead.\n * @breaking-change 9.0.0\n */\nexport class DomPortalHost extends DomPortalOutlet {}\n"]}