@angular/router
Version:
Angular - the routing library
339 lines • 40.6 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 { LocationStrategy } from '@angular/common';
import { Attribute, Directive, ElementRef, HostBinding, HostListener, Input, Renderer2, ɵcoerceToBoolean as coerceToBoolean, ɵɵsanitizeUrlOrResourceUrl } from '@angular/core';
import { Subject } from 'rxjs';
import { NavigationEnd } from '../events';
import { Router } from '../router';
import { ActivatedRoute } from '../router_state';
import * as i0 from "@angular/core";
import * as i1 from "../router";
import * as i2 from "../router_state";
import * as i3 from "@angular/common";
/**
* @description
*
* When applied to an element in a template, makes that element a link
* that initiates navigation to a route. Navigation opens one or more routed components
* in one or more `<router-outlet>` locations on the page.
*
* Given a route configuration `[{ path: 'user/:name', component: UserCmp }]`,
* the following creates a static link to the route:
* `<a routerLink="/user/bob">link to user component</a>`
*
* You can use dynamic values to generate the link.
* For a dynamic link, pass an array of path segments,
* followed by the params for each segment.
* For example, `['/team', teamId, 'user', userName, {details: true}]`
* generates a link to `/team/11/user/bob;details=true`.
*
* Multiple static segments can be merged into one term and combined with dynamic segments.
* For example, `['/team/11/user', userName, {details: true}]`
*
* The input that you provide to the link is treated as a delta to the current URL.
* For instance, suppose the current URL is `/user/(box//aux:team)`.
* The link `<a [routerLink]="['/user/jim']">Jim</a>` creates the URL
* `/user/(jim//aux:team)`.
* See {@link Router#createUrlTree createUrlTree} for more information.
*
* @usageNotes
*
* You can use absolute or relative paths in a link, set query parameters,
* control how parameters are handled, and keep a history of navigation states.
*
* ### Relative link paths
*
* The first segment name can be prepended with `/`, `./`, or `../`.
* * If the first segment begins with `/`, the router looks up the route from the root of the
* app.
* * If the first segment begins with `./`, or doesn't begin with a slash, the router
* looks in the children of the current activated route.
* * If the first segment begins with `../`, the router goes up one level in the route tree.
*
* ### Setting and handling query params and fragments
*
* The following link adds a query parameter and a fragment to the generated URL:
*
* ```
* <a [routerLink]="['/user/bob']" [queryParams]="{debug: true}" fragment="education">
* link to user component
* </a>
* ```
* By default, the directive constructs the new URL using the given query parameters.
* The example generates the link: `/user/bob?debug=true#education`.
*
* You can instruct the directive to handle query parameters differently
* by specifying the `queryParamsHandling` option in the link.
* Allowed values are:
*
* - `'merge'`: Merge the given `queryParams` into the current query params.
* - `'preserve'`: Preserve the current query params.
*
* For example:
*
* ```
* <a [routerLink]="['/user/bob']" [queryParams]="{debug: true}" queryParamsHandling="merge">
* link to user component
* </a>
* ```
*
* See {@link UrlCreationOptions.queryParamsHandling UrlCreationOptions#queryParamsHandling}.
*
* ### Preserving navigation history
*
* You can provide a `state` value to be persisted to the browser's
* [`History.state` property](https://developer.mozilla.org/en-US/docs/Web/API/History#Properties).
* For example:
*
* ```
* <a [routerLink]="['/user/bob']" [state]="{tracingId: 123}">
* link to user component
* </a>
* ```
*
* Use {@link Router.getCurrentNavigation() Router#getCurrentNavigation} to retrieve a saved
* navigation-state value. For example, to capture the `tracingId` during the `NavigationStart`
* event:
*
* ```
* // Get NavigationStart events
* router.events.pipe(filter(e => e instanceof NavigationStart)).subscribe(e => {
* const navigation = router.getCurrentNavigation();
* tracingService.trace({id: navigation.extras.state.tracingId});
* });
* ```
*
* @ngModule RouterModule
*
* @publicApi
*/
export class RouterLink {
constructor(router, route, tabIndexAttribute, renderer, el, locationStrategy) {
this.router = router;
this.route = route;
this.tabIndexAttribute = tabIndexAttribute;
this.renderer = renderer;
this.el = el;
this.locationStrategy = locationStrategy;
this._preserveFragment = false;
this._skipLocationChange = false;
this._replaceUrl = false;
/**
* Represents an `href` attribute value applied to a host element,
* when a host element is `<a>`. For other tags, the value is `null`.
*/
this.href = null;
this.commands = null;
/** @internal */
this.onChanges = new Subject();
const tagName = el.nativeElement.tagName?.toLowerCase();
this.isAnchorElement = tagName === 'a' || tagName === 'area';
if (this.isAnchorElement) {
this.subscription = router.events.subscribe((s) => {
if (s instanceof NavigationEnd) {
this.updateHref();
}
});
}
else {
this.setTabIndexIfNotOnNativeEl('0');
}
}
/**
* Passed to {@link Router#createUrlTree Router#createUrlTree} as part of the
* `UrlCreationOptions`.
* @see {@link UrlCreationOptions#preserveFragment UrlCreationOptions#preserveFragment}
* @see {@link Router#createUrlTree Router#createUrlTree}
*/
set preserveFragment(preserveFragment) {
this._preserveFragment = coerceToBoolean(preserveFragment);
}
get preserveFragment() {
return this._preserveFragment;
}
/**
* Passed to {@link Router#navigateByUrl Router#navigateByUrl} as part of the
* `NavigationBehaviorOptions`.
* @see {@link NavigationBehaviorOptions#skipLocationChange NavigationBehaviorOptions#skipLocationChange}
* @see {@link Router#navigateByUrl Router#navigateByUrl}
*/
set skipLocationChange(skipLocationChange) {
this._skipLocationChange = coerceToBoolean(skipLocationChange);
}
get skipLocationChange() {
return this._skipLocationChange;
}
/**
* Passed to {@link Router#navigateByUrl Router#navigateByUrl} as part of the
* `NavigationBehaviorOptions`.
* @see {@link NavigationBehaviorOptions#replaceUrl NavigationBehaviorOptions#replaceUrl}
* @see {@link Router#navigateByUrl Router#navigateByUrl}
*/
set replaceUrl(replaceUrl) {
this._replaceUrl = coerceToBoolean(replaceUrl);
}
get replaceUrl() {
return this._replaceUrl;
}
/**
* Modifies the tab index if there was not a tabindex attribute on the element during
* instantiation.
*/
setTabIndexIfNotOnNativeEl(newTabIndex) {
if (this.tabIndexAttribute != null /* both `null` and `undefined` */ || this.isAnchorElement) {
return;
}
this.applyAttributeValue('tabindex', newTabIndex);
}
/** @nodoc */
ngOnChanges(changes) {
if (this.isAnchorElement) {
this.updateHref();
}
// This is subscribed to by `RouterLinkActive` so that it knows to update when there are changes
// to the RouterLinks it's tracking.
this.onChanges.next(this);
}
/**
* Commands to pass to {@link Router#createUrlTree Router#createUrlTree}.
* - **array**: commands to pass to {@link Router#createUrlTree Router#createUrlTree}.
* - **string**: shorthand for array of commands with just the string, i.e. `['/route']`
* - **null|undefined**: effectively disables the `routerLink`
* @see {@link Router#createUrlTree Router#createUrlTree}
*/
set routerLink(commands) {
if (commands != null) {
this.commands = Array.isArray(commands) ? commands : [commands];
this.setTabIndexIfNotOnNativeEl('0');
}
else {
this.commands = null;
this.setTabIndexIfNotOnNativeEl(null);
}
}
/** @nodoc */
onClick(button, ctrlKey, shiftKey, altKey, metaKey) {
if (this.urlTree === null) {
return true;
}
if (this.isAnchorElement) {
if (button !== 0 || ctrlKey || shiftKey || altKey || metaKey) {
return true;
}
if (typeof this.target === 'string' && this.target != '_self') {
return true;
}
}
const extras = {
skipLocationChange: this.skipLocationChange,
replaceUrl: this.replaceUrl,
state: this.state,
};
this.router.navigateByUrl(this.urlTree, extras);
// Return `false` for `<a>` elements to prevent default action
// and cancel the native behavior, since the navigation is handled
// by the Router.
return !this.isAnchorElement;
}
/** @nodoc */
ngOnDestroy() {
this.subscription?.unsubscribe();
}
updateHref() {
this.href = this.urlTree !== null && this.locationStrategy ?
this.locationStrategy?.prepareExternalUrl(this.router.serializeUrl(this.urlTree)) :
null;
const sanitizedValue = this.href === null ?
null :
// This class represents a directive that can be added to both `<a>` elements,
// as well as other elements. As a result, we can't define security context at
// compile time. So the security context is deferred to runtime.
// The `ɵɵsanitizeUrlOrResourceUrl` selects the necessary sanitizer function
// based on the tag and property names. The logic mimics the one from
// `packages/compiler/src/schema/dom_security_schema.ts`, which is used at compile time.
//
// Note: we should investigate whether we can switch to using `@HostBinding('attr.href')`
// instead of applying a value via a renderer, after a final merge of the
// `RouterLinkWithHref` directive.
ɵɵsanitizeUrlOrResourceUrl(this.href, this.el.nativeElement.tagName.toLowerCase(), 'href');
this.applyAttributeValue('href', sanitizedValue);
}
applyAttributeValue(attrName, attrValue) {
const renderer = this.renderer;
const nativeElement = this.el.nativeElement;
if (attrValue !== null) {
renderer.setAttribute(nativeElement, attrName, attrValue);
}
else {
renderer.removeAttribute(nativeElement, attrName);
}
}
get urlTree() {
if (this.commands === null) {
return null;
}
return this.router.createUrlTree(this.commands, {
// If the `relativeTo` input is not defined, we want to use `this.route` by default.
// Otherwise, we should use the value provided by the user in the input.
relativeTo: this.relativeTo !== undefined ? this.relativeTo : this.route,
queryParams: this.queryParams,
fragment: this.fragment,
queryParamsHandling: this.queryParamsHandling,
preserveFragment: this.preserveFragment,
});
}
}
RouterLink.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.1.5", ngImport: i0, type: RouterLink, deps: [{ token: i1.Router }, { token: i2.ActivatedRoute }, { token: 'tabindex', attribute: true }, { token: i0.Renderer2 }, { token: i0.ElementRef }, { token: i3.LocationStrategy }], target: i0.ɵɵFactoryTarget.Directive });
RouterLink.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "15.1.5", type: RouterLink, isStandalone: true, selector: "[routerLink]", inputs: { target: "target", queryParams: "queryParams", fragment: "fragment", queryParamsHandling: "queryParamsHandling", state: "state", relativeTo: "relativeTo", preserveFragment: "preserveFragment", skipLocationChange: "skipLocationChange", replaceUrl: "replaceUrl", routerLink: "routerLink" }, host: { listeners: { "click": "onClick($event.button,$event.ctrlKey,$event.shiftKey,$event.altKey,$event.metaKey)" }, properties: { "attr.target": "this.target" } }, usesOnChanges: true, ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.1.5", ngImport: i0, type: RouterLink, decorators: [{
type: Directive,
args: [{
selector: '[routerLink]',
standalone: true,
}]
}], ctorParameters: function () { return [{ type: i1.Router }, { type: i2.ActivatedRoute }, { type: undefined, decorators: [{
type: Attribute,
args: ['tabindex']
}] }, { type: i0.Renderer2 }, { type: i0.ElementRef }, { type: i3.LocationStrategy }]; }, propDecorators: { target: [{
type: HostBinding,
args: ['attr.target']
}, {
type: Input
}], queryParams: [{
type: Input
}], fragment: [{
type: Input
}], queryParamsHandling: [{
type: Input
}], state: [{
type: Input
}], relativeTo: [{
type: Input
}], preserveFragment: [{
type: Input
}], skipLocationChange: [{
type: Input
}], replaceUrl: [{
type: Input
}], routerLink: [{
type: Input
}], onClick: [{
type: HostListener,
args: ['click',
['$event.button', '$event.ctrlKey', '$event.shiftKey', '$event.altKey', '$event.metaKey']]
}] } });
/**
* @description
* An alias for the `RouterLink` directive.
* Deprecated since v15, use `RouterLink` directive instead.
*
* @deprecated use `RouterLink` directive instead.
* @publicApi
*/
export { RouterLink as RouterLinkWithHref };
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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 {LocationStrategy} from '@angular/common';\nimport {Attribute, Directive, ElementRef, HostBinding, HostListener, Input, OnChanges, OnDestroy, Renderer2, SimpleChanges, ɵcoerceToBoolean as coerceToBoolean, ɵɵsanitizeUrlOrResourceUrl} from '@angular/core';\nimport {Subject, Subscription} from 'rxjs';\n\nimport {Event, NavigationEnd} from '../events';\nimport {QueryParamsHandling} from '../models';\nimport {Router} from '../router';\nimport {ActivatedRoute} from '../router_state';\nimport {Params} from '../shared';\nimport {UrlTree} from '../url_tree';\n\n\n/**\n * @description\n *\n * When applied to an element in a template, makes that element a link\n * that initiates navigation to a route. Navigation opens one or more routed components\n * in one or more `<router-outlet>` locations on the page.\n *\n * Given a route configuration `[{ path: 'user/:name', component: UserCmp }]`,\n * the following creates a static link to the route:\n * `<a routerLink=\"/user/bob\">link to user component</a>`\n *\n * You can use dynamic values to generate the link.\n * For a dynamic link, pass an array of path segments,\n * followed by the params for each segment.\n * For example, `['/team', teamId, 'user', userName, {details: true}]`\n * generates a link to `/team/11/user/bob;details=true`.\n *\n * Multiple static segments can be merged into one term and combined with dynamic segments.\n * For example, `['/team/11/user', userName, {details: true}]`\n *\n * The input that you provide to the link is treated as a delta to the current URL.\n * For instance, suppose the current URL is `/user/(box//aux:team)`.\n * The link `<a [routerLink]=\"['/user/jim']\">Jim</a>` creates the URL\n * `/user/(jim//aux:team)`.\n * See {@link Router#createUrlTree createUrlTree} for more information.\n *\n * @usageNotes\n *\n * You can use absolute or relative paths in a link, set query parameters,\n * control how parameters are handled, and keep a history of navigation states.\n *\n * ### Relative link paths\n *\n * The first segment name can be prepended with `/`, `./`, or `../`.\n * * If the first segment begins with `/`, the router looks up the route from the root of the\n *   app.\n * * If the first segment begins with `./`, or doesn't begin with a slash, the router\n *   looks in the children of the current activated route.\n * * If the first segment begins with `../`, the router goes up one level in the route tree.\n *\n * ### Setting and handling query params and fragments\n *\n * The following link adds a query parameter and a fragment to the generated URL:\n *\n * ```\n * <a [routerLink]=\"['/user/bob']\" [queryParams]=\"{debug: true}\" fragment=\"education\">\n *   link to user component\n * </a>\n * ```\n * By default, the directive constructs the new URL using the given query parameters.\n * The example generates the link: `/user/bob?debug=true#education`.\n *\n * You can instruct the directive to handle query parameters differently\n * by specifying the `queryParamsHandling` option in the link.\n * Allowed values are:\n *\n *  - `'merge'`: Merge the given `queryParams` into the current query params.\n *  - `'preserve'`: Preserve the current query params.\n *\n * For example:\n *\n * ```\n * <a [routerLink]=\"['/user/bob']\" [queryParams]=\"{debug: true}\" queryParamsHandling=\"merge\">\n *   link to user component\n * </a>\n * ```\n *\n * See {@link UrlCreationOptions.queryParamsHandling UrlCreationOptions#queryParamsHandling}.\n *\n * ### Preserving navigation history\n *\n * You can provide a `state` value to be persisted to the browser's\n * [`History.state` property](https://developer.mozilla.org/en-US/docs/Web/API/History#Properties).\n * For example:\n *\n * ```\n * <a [routerLink]=\"['/user/bob']\" [state]=\"{tracingId: 123}\">\n *   link to user component\n * </a>\n * ```\n *\n * Use {@link Router.getCurrentNavigation() Router#getCurrentNavigation} to retrieve a saved\n * navigation-state value. For example, to capture the `tracingId` during the `NavigationStart`\n * event:\n *\n * ```\n * // Get NavigationStart events\n * router.events.pipe(filter(e => e instanceof NavigationStart)).subscribe(e => {\n *   const navigation = router.getCurrentNavigation();\n *   tracingService.trace({id: navigation.extras.state.tracingId});\n * });\n * ```\n *\n * @ngModule RouterModule\n *\n * @publicApi\n */\n@Directive({\n  selector: '[routerLink]',\n  standalone: true,\n})\nexport class RouterLink implements OnChanges, OnDestroy {\n  private _preserveFragment = false;\n  private _skipLocationChange = false;\n  private _replaceUrl = false;\n\n  /**\n   * Represents an `href` attribute value applied to a host element,\n   * when a host element is `<a>`. For other tags, the value is `null`.\n   */\n  href: string|null = null;\n\n  /**\n   * Represents the `target` attribute on a host element.\n   * This is only used when the host element is an `<a>` tag.\n   */\n  @HostBinding('attr.target') @Input() target?: string;\n\n  /**\n   * Passed to {@link Router#createUrlTree Router#createUrlTree} as part of the\n   * `UrlCreationOptions`.\n   * @see {@link UrlCreationOptions#queryParams UrlCreationOptions#queryParams}\n   * @see {@link Router#createUrlTree Router#createUrlTree}\n   */\n  @Input() queryParams?: Params|null;\n  /**\n   * Passed to {@link Router#createUrlTree Router#createUrlTree} as part of the\n   * `UrlCreationOptions`.\n   * @see {@link UrlCreationOptions#fragment UrlCreationOptions#fragment}\n   * @see {@link Router#createUrlTree Router#createUrlTree}\n   */\n  @Input() fragment?: string;\n  /**\n   * Passed to {@link Router#createUrlTree Router#createUrlTree} as part of the\n   * `UrlCreationOptions`.\n   * @see {@link UrlCreationOptions#queryParamsHandling UrlCreationOptions#queryParamsHandling}\n   * @see {@link Router#createUrlTree Router#createUrlTree}\n   */\n  @Input() queryParamsHandling?: QueryParamsHandling|null;\n  /**\n   * Passed to {@link Router#navigateByUrl Router#navigateByUrl} as part of the\n   * `NavigationBehaviorOptions`.\n   * @see {@link NavigationBehaviorOptions#state NavigationBehaviorOptions#state}\n   * @see {@link Router#navigateByUrl Router#navigateByUrl}\n   */\n  @Input() state?: {[k: string]: any};\n  /**\n   * Passed to {@link Router#createUrlTree Router#createUrlTree} as part of the\n   * `UrlCreationOptions`.\n   * Specify a value here when you do not want to use the default value\n   * for `routerLink`, which is the current activated route.\n   * Note that a value of `undefined` here will use the `routerLink` default.\n   * @see {@link UrlCreationOptions#relativeTo UrlCreationOptions#relativeTo}\n   * @see {@link Router#createUrlTree Router#createUrlTree}\n   */\n  @Input() relativeTo?: ActivatedRoute|null;\n\n  private commands: any[]|null = null;\n\n  /** Whether a host element is an `<a>` tag. */\n  private isAnchorElement: boolean;\n\n  private subscription?: Subscription;\n\n  /** @internal */\n  onChanges = new Subject<RouterLink>();\n\n  constructor(\n      private router: Router, private route: ActivatedRoute,\n      @Attribute('tabindex') private readonly tabIndexAttribute: string|null|undefined,\n      private readonly renderer: Renderer2, private readonly el: ElementRef,\n      private locationStrategy?: LocationStrategy) {\n    const tagName = el.nativeElement.tagName?.toLowerCase();\n    this.isAnchorElement = tagName === 'a' || tagName === 'area';\n\n    if (this.isAnchorElement) {\n      this.subscription = router.events.subscribe((s: Event) => {\n        if (s instanceof NavigationEnd) {\n          this.updateHref();\n        }\n      });\n    } else {\n      this.setTabIndexIfNotOnNativeEl('0');\n    }\n  }\n\n  /**\n   * Passed to {@link Router#createUrlTree Router#createUrlTree} as part of the\n   * `UrlCreationOptions`.\n   * @see {@link UrlCreationOptions#preserveFragment UrlCreationOptions#preserveFragment}\n   * @see {@link Router#createUrlTree Router#createUrlTree}\n   */\n  @Input()\n  set preserveFragment(preserveFragment: boolean|string|null|undefined) {\n    this._preserveFragment = coerceToBoolean(preserveFragment);\n  }\n\n  get preserveFragment(): boolean {\n    return this._preserveFragment;\n  }\n\n  /**\n   * Passed to {@link Router#navigateByUrl Router#navigateByUrl} as part of the\n   * `NavigationBehaviorOptions`.\n   * @see {@link NavigationBehaviorOptions#skipLocationChange NavigationBehaviorOptions#skipLocationChange}\n   * @see {@link Router#navigateByUrl Router#navigateByUrl}\n   */\n  @Input()\n  set skipLocationChange(skipLocationChange: boolean|string|null|undefined) {\n    this._skipLocationChange = coerceToBoolean(skipLocationChange);\n  }\n\n  get skipLocationChange(): boolean {\n    return this._skipLocationChange;\n  }\n\n  /**\n   * Passed to {@link Router#navigateByUrl Router#navigateByUrl} as part of the\n   * `NavigationBehaviorOptions`.\n   * @see {@link NavigationBehaviorOptions#replaceUrl NavigationBehaviorOptions#replaceUrl}\n   * @see {@link Router#navigateByUrl Router#navigateByUrl}\n   */\n  @Input()\n  set replaceUrl(replaceUrl: boolean|string|null|undefined) {\n    this._replaceUrl = coerceToBoolean(replaceUrl);\n  }\n\n  get replaceUrl(): boolean {\n    return this._replaceUrl;\n  }\n\n  /**\n   * Modifies the tab index if there was not a tabindex attribute on the element during\n   * instantiation.\n   */\n  private setTabIndexIfNotOnNativeEl(newTabIndex: string|null) {\n    if (this.tabIndexAttribute != null /* both `null` and `undefined` */ || this.isAnchorElement) {\n      return;\n    }\n    this.applyAttributeValue('tabindex', newTabIndex);\n  }\n\n  /** @nodoc */\n  ngOnChanges(changes: SimpleChanges) {\n    if (this.isAnchorElement) {\n      this.updateHref();\n    }\n    // This is subscribed to by `RouterLinkActive` so that it knows to update when there are changes\n    // to the RouterLinks it's tracking.\n    this.onChanges.next(this);\n  }\n\n  /**\n   * Commands to pass to {@link Router#createUrlTree Router#createUrlTree}.\n   *   - **array**: commands to pass to {@link Router#createUrlTree Router#createUrlTree}.\n   *   - **string**: shorthand for array of commands with just the string, i.e. `['/route']`\n   *   - **null|undefined**: effectively disables the `routerLink`\n   * @see {@link Router#createUrlTree Router#createUrlTree}\n   */\n  @Input()\n  set routerLink(commands: any[]|string|null|undefined) {\n    if (commands != null) {\n      this.commands = Array.isArray(commands) ? commands : [commands];\n      this.setTabIndexIfNotOnNativeEl('0');\n    } else {\n      this.commands = null;\n      this.setTabIndexIfNotOnNativeEl(null);\n    }\n  }\n\n  /** @nodoc */\n  @HostListener(\n      'click',\n      ['$event.button', '$event.ctrlKey', '$event.shiftKey', '$event.altKey', '$event.metaKey'])\n  onClick(button: number, ctrlKey: boolean, shiftKey: boolean, altKey: boolean, metaKey: boolean):\n      boolean {\n    if (this.urlTree === null) {\n      return true;\n    }\n\n    if (this.isAnchorElement) {\n      if (button !== 0 || ctrlKey || shiftKey || altKey || metaKey) {\n        return true;\n      }\n\n      if (typeof this.target === 'string' && this.target != '_self') {\n        return true;\n      }\n    }\n\n    const extras = {\n      skipLocationChange: this.skipLocationChange,\n      replaceUrl: this.replaceUrl,\n      state: this.state,\n    };\n    this.router.navigateByUrl(this.urlTree, extras);\n\n    // Return `false` for `<a>` elements to prevent default action\n    // and cancel the native behavior, since the navigation is handled\n    // by the Router.\n    return !this.isAnchorElement;\n  }\n\n  /** @nodoc */\n  ngOnDestroy(): any {\n    this.subscription?.unsubscribe();\n  }\n\n  private updateHref(): void {\n    this.href = this.urlTree !== null && this.locationStrategy ?\n        this.locationStrategy?.prepareExternalUrl(this.router.serializeUrl(this.urlTree)) :\n        null;\n\n    const sanitizedValue = this.href === null ?\n        null :\n        // This class represents a directive that can be added to both `<a>` elements,\n        // as well as other elements. As a result, we can't define security context at\n        // compile time. So the security context is deferred to runtime.\n        // The `ɵɵsanitizeUrlOrResourceUrl` selects the necessary sanitizer function\n        // based on the tag and property names. The logic mimics the one from\n        // `packages/compiler/src/schema/dom_security_schema.ts`, which is used at compile time.\n        //\n        // Note: we should investigate whether we can switch to using `@HostBinding('attr.href')`\n        // instead of applying a value via a renderer, after a final merge of the\n        // `RouterLinkWithHref` directive.\n        ɵɵsanitizeUrlOrResourceUrl(this.href, this.el.nativeElement.tagName.toLowerCase(), 'href');\n    this.applyAttributeValue('href', sanitizedValue);\n  }\n\n  private applyAttributeValue(attrName: string, attrValue: string|null) {\n    const renderer = this.renderer;\n    const nativeElement = this.el.nativeElement;\n    if (attrValue !== null) {\n      renderer.setAttribute(nativeElement, attrName, attrValue);\n    } else {\n      renderer.removeAttribute(nativeElement, attrName);\n    }\n  }\n\n  get urlTree(): UrlTree|null {\n    if (this.commands === null) {\n      return null;\n    }\n    return this.router.createUrlTree(this.commands, {\n      // If the `relativeTo` input is not defined, we want to use `this.route` by default.\n      // Otherwise, we should use the value provided by the user in the input.\n      relativeTo: this.relativeTo !== undefined ? this.relativeTo : this.route,\n      queryParams: this.queryParams,\n      fragment: this.fragment,\n      queryParamsHandling: this.queryParamsHandling,\n      preserveFragment: this.preserveFragment,\n    });\n  }\n}\n\n/**\n * @description\n * An alias for the `RouterLink` directive.\n * Deprecated since v15, use `RouterLink` directive instead.\n *\n * @deprecated use `RouterLink` directive instead.\n * @publicApi\n */\nexport {RouterLink as RouterLinkWithHref};\n"]}