1 | /**
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2 | * @license
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3 | * Copyright Google LLC All Rights Reserved.
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4 | *
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5 | * Use of this source code is governed by an MIT-style license that can be
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6 | * found in the LICENSE file at https://angular.io/license
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7 | */
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8 | import { Injector, } from '@angular/core';
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9 | import { BasePortalOutlet } from './portal';
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10 | /**
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11 | * A PortalOutlet for attaching portals to an arbitrary DOM element outside of the Angular
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12 | * application context.
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13 | */
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14 | export class DomPortalOutlet extends BasePortalOutlet {
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15 | /**
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16 | * @param outletElement Element into which the content is projected.
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17 | * @param _componentFactoryResolver Used to resolve the component factory.
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18 | * Only required when attaching component portals.
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19 | * @param _appRef Reference to the application. Only used in component portals when there
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20 | * is no `ViewContainerRef` available.
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21 | * @param _defaultInjector Injector to use as a fallback when the portal being attached doesn't
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22 | * have one. Only used for component portals.
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23 | * @param _document Reference to the document. Used when attaching a DOM portal. Will eventually
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24 | * become a required parameter.
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25 | */
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26 | constructor(
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27 | /** Element into which the content is projected. */
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28 | outletElement, _componentFactoryResolver, _appRef, _defaultInjector,
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29 | /**
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30 | * @deprecated `_document` Parameter to be made required.
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31 | * @breaking-change 10.0.0
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32 | */
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33 | _document) {
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34 | super();
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35 | this.outletElement = outletElement;
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36 | this._componentFactoryResolver = _componentFactoryResolver;
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37 | this._appRef = _appRef;
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38 | this._defaultInjector = _defaultInjector;
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39 | /**
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40 | * Attaches a DOM portal by transferring its content into the outlet.
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41 | * @param portal Portal to be attached.
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42 | * @deprecated To be turned into a method.
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43 | * @breaking-change 10.0.0
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44 | */
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45 | this.attachDomPortal = (portal) => {
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46 | // @breaking-change 10.0.0 Remove check and error once the
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47 | // `_document` constructor parameter is required.
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48 | if (!this._document && (typeof ngDevMode === 'undefined' || ngDevMode)) {
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49 | throw Error('Cannot attach DOM portal without _document constructor parameter');
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50 | }
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51 | const element = portal.element;
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52 | if (!element.parentNode && (typeof ngDevMode === 'undefined' || ngDevMode)) {
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53 | throw Error('DOM portal content must be attached to a parent node.');
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54 | }
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55 | // Anchor used to save the element's previous position so
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56 | // that we can restore it when the portal is detached.
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57 | const anchorNode = this._document.createComment('dom-portal');
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58 | element.parentNode.insertBefore(anchorNode, element);
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59 | this.outletElement.appendChild(element);
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60 | this._attachedPortal = portal;
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61 | super.setDisposeFn(() => {
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62 | // We can't use `replaceWith` here because IE doesn't support it.
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63 | if (anchorNode.parentNode) {
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64 | anchorNode.parentNode.replaceChild(element, anchorNode);
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65 | }
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66 | });
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67 | };
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68 | this._document = _document;
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69 | }
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70 | /**
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71 | * Attach the given ComponentPortal to DOM element using the ComponentFactoryResolver.
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72 | * @param portal Portal to be attached
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73 | * @returns Reference to the created component.
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74 | */
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75 | attachComponentPortal(portal) {
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76 | const resolver = (portal.componentFactoryResolver || this._componentFactoryResolver);
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77 | if ((typeof ngDevMode === 'undefined' || ngDevMode) && !resolver) {
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78 | throw Error('Cannot attach component portal to outlet without a ComponentFactoryResolver.');
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79 | }
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80 | const componentFactory = resolver.resolveComponentFactory(portal.component);
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81 | let componentRef;
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82 | // If the portal specifies a ViewContainerRef, we will use that as the attachment point
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83 | // for the component (in terms of Angular's component tree, not rendering).
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84 | // When the ViewContainerRef is missing, we use the factory to create the component directly
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85 | // and then manually attach the view to the application.
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86 | if (portal.viewContainerRef) {
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87 | componentRef = portal.viewContainerRef.createComponent(componentFactory, portal.viewContainerRef.length, portal.injector || portal.viewContainerRef.injector);
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88 | this.setDisposeFn(() => componentRef.destroy());
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89 | }
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90 | else {
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91 | if ((typeof ngDevMode === 'undefined' || ngDevMode) && !this._appRef) {
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92 | throw Error('Cannot attach component portal to outlet without an ApplicationRef.');
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93 | }
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94 | componentRef = componentFactory.create(portal.injector || this._defaultInjector || Injector.NULL);
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95 | this._appRef.attachView(componentRef.hostView);
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96 | this.setDisposeFn(() => {
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97 | // Verify that the ApplicationRef has registered views before trying to detach a host view.
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98 | // This check also protects the `detachView` from being called on a destroyed ApplicationRef.
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99 | if (this._appRef.viewCount > 0) {
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100 | this._appRef.detachView(componentRef.hostView);
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101 | }
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102 | componentRef.destroy();
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103 | });
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104 | }
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105 | // At this point the component has been instantiated, so we move it to the location in the DOM
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106 | // where we want it to be rendered.
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107 | this.outletElement.appendChild(this._getComponentRootNode(componentRef));
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108 | this._attachedPortal = portal;
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109 | return componentRef;
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110 | }
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111 | /**
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112 | * Attaches a template portal to the DOM as an embedded view.
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113 | * @param portal Portal to be attached.
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114 | * @returns Reference to the created embedded view.
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115 | */
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116 | attachTemplatePortal(portal) {
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117 | let viewContainer = portal.viewContainerRef;
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118 | let viewRef = viewContainer.createEmbeddedView(portal.templateRef, portal.context, {
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119 | injector: portal.injector,
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120 | });
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121 | // The method `createEmbeddedView` will add the view as a child of the viewContainer.
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122 | // But for the DomPortalOutlet the view can be added everywhere in the DOM
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123 | // (e.g Overlay Container) To move the view to the specified host element. We just
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124 | // re-append the existing root nodes.
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125 | viewRef.rootNodes.forEach(rootNode => this.outletElement.appendChild(rootNode));
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126 | // Note that we want to detect changes after the nodes have been moved so that
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127 | // any directives inside the portal that are looking at the DOM inside a lifecycle
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128 | // hook won't be invoked too early.
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129 | viewRef.detectChanges();
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130 | this.setDisposeFn(() => {
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131 | let index = viewContainer.indexOf(viewRef);
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132 | if (index !== -1) {
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133 | viewContainer.remove(index);
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134 | }
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135 | });
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136 | this._attachedPortal = portal;
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137 | // TODO(jelbourn): Return locals from view.
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138 | return viewRef;
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139 | }
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140 | /**
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141 | * Clears out a portal from the DOM.
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142 | */
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143 | dispose() {
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144 | super.dispose();
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145 | this.outletElement.remove();
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146 | }
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147 | /** Gets the root HTMLElement for an instantiated component. */
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148 | _getComponentRootNode(componentRef) {
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149 | return componentRef.hostView.rootNodes[0];
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150 | }
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151 | }
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152 | /**
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153 | * @deprecated Use `DomPortalOutlet` instead.
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154 | * @breaking-change 9.0.0
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155 | */
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156 | export class DomPortalHost extends DomPortalOutlet {
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157 | }
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Only used in component portals when there\n   *   is no `ViewContainerRef` available.\n   * @param _defaultInjector Injector to use as a fallback when the portal being attached doesn't\n   *   have one. Only used for component portals.\n   * @param _document Reference to the document. Used when attaching a DOM portal. Will eventually\n   *   become a required parameter.\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\n    if ((typeof ngDevMode === 'undefined' || ngDevMode) && !resolver) {\n      throw Error('Cannot attach component portal to outlet without a ComponentFactoryResolver.');\n    }\n\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      if ((typeof ngDevMode === 'undefined' || ngDevMode) && !this._appRef) {\n        throw Error('Cannot attach component portal to outlet without an ApplicationRef.');\n      }\n\n      componentRef = componentFactory.create(\n        portal.injector || this._defaultInjector || Injector.NULL,\n      );\n      this._appRef!.attachView(componentRef.hostView);\n      this.setDisposeFn(() => {\n        // Verify that the ApplicationRef has registered views before trying to detach a host view.\n        // This check also protects the `detachView` from being called on a destroyed ApplicationRef.\n        if (this._appRef!.viewCount > 0) {\n          this._appRef!.detachView(componentRef.hostView);\n        }\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      injector: portal.injector,\n    });\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"]} |
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