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@angular/router

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/** * @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 { Location } from '@angular/common'; import { inject, Injectable, NgZone, ɵConsole as Console, ɵInitialRenderPendingTasks as InitialRenderPendingTasks, ɵRuntimeError as RuntimeError } from '@angular/core'; import { Subject, Subscription } from 'rxjs'; import { createSegmentGroupFromRoute, createUrlTreeFromSegmentGroup } from './create_url_tree'; import { INPUT_BINDER } from './directives/router_outlet'; import { BeforeActivateRoutes, IMPERATIVE_NAVIGATION, NavigationCancel, NavigationEnd, RedirectRequest } from './events'; import { isBrowserTriggeredNavigation, NavigationTransitions } from './navigation_transition'; import { RouteReuseStrategy } from './route_reuse_strategy'; import { ROUTER_CONFIGURATION } from './router_config'; import { ROUTES } from './router_config_loader'; import { StateManager } from './statemanager/state_manager'; import { UrlHandlingStrategy } from './url_handling_strategy'; import { containsTree, isUrlTree, UrlSerializer } from './url_tree'; import { standardizeConfig, validateConfig } from './utils/config'; import { afterNextNavigation } from './utils/navigations'; import * as i0 from "@angular/core"; function defaultErrorHandler(error) { throw error; } /** * The equivalent `IsActiveMatchOptions` options for `Router.isActive` is called with `true` * (exact = true). */ export const exactMatchOptions = { paths: 'exact', fragment: 'ignored', matrixParams: 'ignored', queryParams: 'exact' }; /** * The equivalent `IsActiveMatchOptions` options for `Router.isActive` is called with `false` * (exact = false). */ export const subsetMatchOptions = { paths: 'subset', fragment: 'ignored', matrixParams: 'ignored', queryParams: 'subset' }; /** * @description * * A service that provides navigation among views and URL manipulation capabilities. * * @see {@link Route} * @see [Routing and Navigation Guide](guide/router). * * @ngModule RouterModule * * @publicApi */ export class Router { get currentUrlTree() { return this.stateManager.getCurrentUrlTree(); } get rawUrlTree() { return this.stateManager.getRawUrlTree(); } /** * An event stream for routing events. */ get events() { // TODO(atscott): This _should_ be events.asObservable(). However, this change requires internal // cleanup: tests are doing `(route.events as Subject<Event>).next(...)`. This isn't // allowed/supported but we still have to fix these or file bugs against the teams before making // the change. return this._events; } /** * The current state of routing in this NgModule. */ get routerState() { return this.stateManager.getRouterState(); } constructor() { this.disposed = false; this.isNgZoneEnabled = false; this.console = inject(Console); this.stateManager = inject(StateManager); this.options = inject(ROUTER_CONFIGURATION, { optional: true }) || {}; this.pendingTasks = inject(InitialRenderPendingTasks); this.urlUpdateStrategy = this.options.urlUpdateStrategy || 'deferred'; this.navigationTransitions = inject(NavigationTransitions); this.urlSerializer = inject(UrlSerializer); this.location = inject(Location); this.urlHandlingStrategy = inject(UrlHandlingStrategy); /** * The private `Subject` type for the public events exposed in the getter. This is used internally * to push events to. The separate field allows us to expose separate types in the public API * (i.e., an Observable rather than the Subject). */ this._events = new Subject(); /** * A handler for navigation errors in this NgModule. * * @deprecated Subscribe to the `Router` events and watch for `NavigationError` instead. * `provideRouter` has the `withNavigationErrorHandler` feature to make this easier. * @see {@link withNavigationErrorHandler} */ this.errorHandler = this.options.errorHandler || defaultErrorHandler; /** * True if at least one navigation event has occurred, * false otherwise. */ this.navigated = false; /** * A strategy for re-using routes. * * @deprecated Configure using `providers` instead: * `{provide: RouteReuseStrategy, useClass: MyStrategy}`. */ this.routeReuseStrategy = inject(RouteReuseStrategy); /** * How to handle a navigation request to the current URL. * * * @deprecated Configure this through `provideRouter` or `RouterModule.forRoot` instead. * @see {@link withRouterConfig} * @see {@link provideRouter} * @see {@link RouterModule} */ this.onSameUrlNavigation = this.options.onSameUrlNavigation || 'ignore'; this.config = inject(ROUTES, { optional: true })?.flat() ?? []; /** * Indicates whether the application has opted in to binding Router data to component inputs. * * This option is enabled by the `withComponentInputBinding` feature of `provideRouter` or * `bindToComponentInputs` in the `ExtraOptions` of `RouterModule.forRoot`. */ this.componentInputBindingEnabled = !!inject(INPUT_BINDER, { optional: true }); this.eventsSubscription = new Subscription(); this.isNgZoneEnabled = inject(NgZone) instanceof NgZone && NgZone.isInAngularZone(); this.resetConfig(this.config); this.navigationTransitions.setupNavigations(this, this.currentUrlTree, this.routerState) .subscribe({ error: (e) => { this.console.warn(ngDevMode ? `Unhandled Navigation Error: ${e}` : e); } }); this.subscribeToNavigationEvents(); } subscribeToNavigationEvents() { const subscription = this.navigationTransitions.events.subscribe(e => { try { const currentTransition = this.navigationTransitions.currentTransition; const currentNavigation = this.navigationTransitions.currentNavigation; if (currentTransition !== null && currentNavigation !== null) { this.stateManager.handleRouterEvent(e, currentNavigation); if (e instanceof NavigationCancel && e.code !== 0 /* NavigationCancellationCode.Redirect */ && e.code !== 1 /* NavigationCancellationCode.SupersededByNewNavigation */) { // It seems weird that `navigated` is set to `true` when the navigation is rejected, // however it's how things were written initially. Investigation would need to be done // to determine if this can be removed. this.navigated = true; } else if (e instanceof NavigationEnd) { this.navigated = true; } else if (e instanceof RedirectRequest) { const mergedTree = this.urlHandlingStrategy.merge(e.url, currentTransition.currentRawUrl); const extras = { skipLocationChange: currentTransition.extras.skipLocationChange, // The URL is already updated at this point if we have 'eager' URL // updates or if the navigation was triggered by the browser (back // button, URL bar, etc). We want to replace that item in history // if the navigation is rejected. replaceUrl: this.urlUpdateStrategy === 'eager' || isBrowserTriggeredNavigation(currentTransition.source) }; this.scheduleNavigation(mergedTree, IMPERATIVE_NAVIGATION, null, extras, { resolve: currentTransition.resolve, reject: currentTransition.reject, promise: currentTransition.promise }); } } // Note that it's important to have the Router process the events _before_ the event is // pushed through the public observable. This ensures the correct router state is in place // before applications observe the events. if (isPublicRouterEvent(e)) { this._events.next(e); } } catch (e) { this.navigationTransitions.transitionAbortSubject.next(e); } }); this.eventsSubscription.add(subscription); } /** @internal */ resetRootComponentType(rootComponentType) { // TODO: vsavkin router 4.0 should make the root component set to null // this will simplify the lifecycle of the router. this.routerState.root.component = rootComponentType; this.navigationTransitions.rootComponentType = rootComponentType; } /** * Sets up the location change listener and performs the initial navigation. */ initialNavigation() { this.setUpLocationChangeListener(); if (!this.navigationTransitions.hasRequestedNavigation) { this.navigateToSyncWithBrowser(this.location.path(true), IMPERATIVE_NAVIGATION, this.stateManager.restoredState()); } } /** * Sets up the location change listener. This listener detects navigations triggered from outside * the Router (the browser back/forward buttons, for example) and schedules a corresponding Router * navigation so that the correct events, guards, etc. are triggered. */ setUpLocationChangeListener() { // Don't need to use Zone.wrap any more, because zone.js // already patch onPopState, so location change callback will // run into ngZone if (!this.nonRouterCurrentEntryChangeSubscription) { this.nonRouterCurrentEntryChangeSubscription = this.stateManager.registerNonRouterCurrentEntryChangeListener((url, state) => { // The `setTimeout` was added in #12160 and is likely to support Angular/AngularJS // hybrid apps. setTimeout(() => { this.navigateToSyncWithBrowser(url, 'popstate', state); }, 0); }); } } /** * Schedules a router navigation to synchronize Router state with the browser state. * * This is done as a response to a popstate event and the initial navigation. These * two scenarios represent times when the browser URL/state has been updated and * the Router needs to respond to ensure its internal state matches. */ navigateToSyncWithBrowser(url, source, state) { const extras = { replaceUrl: true }; // TODO: restoredState should always include the entire state, regardless // of navigationId. This requires a breaking change to update the type on // NavigationStart’s restoredState, which currently requires navigationId // to always be present. The Router used to only restore history state if // a navigationId was present. // The stored navigationId is used by the RouterScroller to retrieve the scroll // position for the page. const restoredState = state?.navigationId ? state : null; // Separate to NavigationStart.restoredState, we must also restore the state to // history.state and generate a new navigationId, since it will be overwritten if (state) { const stateCopy = { ...state }; delete stateCopy.navigationId; delete stateCopy.ɵrouterPageId; if (Object.keys(stateCopy).length !== 0) { extras.state = stateCopy; } } const urlTree = this.parseUrl(url); this.scheduleNavigation(urlTree, source, restoredState, extras); } /** The current URL. */ get url() { return this.serializeUrl(this.currentUrlTree); } /** * Returns the current `Navigation` object when the router is navigating, * and `null` when idle. */ getCurrentNavigation() { return this.navigationTransitions.currentNavigation; } /** * The `Navigation` object of the most recent navigation to succeed and `null` if there * has not been a successful navigation yet. */ get lastSuccessfulNavigation() { return this.navigationTransitions.lastSuccessfulNavigation; } /** * Resets the route configuration used for navigation and generating links. * * @param config The route array for the new configuration. * * @usageNotes * * ``` * router.resetConfig([ * { path: 'team/:id', component: TeamCmp, children: [ * { path: 'simple', component: SimpleCmp }, * { path: 'user/:name', component: UserCmp } * ]} * ]); * ``` */ resetConfig(config) { (typeof ngDevMode === 'undefined' || ngDevMode) && validateConfig(config); this.config = config.map(standardizeConfig); this.navigated = false; } /** @nodoc */ ngOnDestroy() { this.dispose(); } /** Disposes of the router. */ dispose() { this.navigationTransitions.complete(); if (this.nonRouterCurrentEntryChangeSubscription) { this.nonRouterCurrentEntryChangeSubscription.unsubscribe(); this.nonRouterCurrentEntryChangeSubscription = undefined; } this.disposed = true; this.eventsSubscription.unsubscribe(); } /** * Appends URL segments to the current URL tree to create a new URL tree. * * @param commands An array of URL fragments with which to construct the new URL tree. * If the path is static, can be the literal URL string. For a dynamic path, pass an array of path * segments, followed by the parameters for each segment. * The fragments are applied to the current URL tree or the one provided in the `relativeTo` * property of the options object, if supplied. * @param navigationExtras Options that control the navigation strategy. * @returns The new URL tree. * * @usageNotes * * ``` * // create /team/33/user/11 * router.createUrlTree(['/team', 33, 'user', 11]); * * // create /team/33;expand=true/user/11 * router.createUrlTree(['/team', 33, {expand: true}, 'user', 11]); * * // you can collapse static segments like this (this works only with the first passed-in value): * router.createUrlTree(['/team/33/user', userId]); * * // If the first segment can contain slashes, and you do not want the router to split it, * // you can do the following: * router.createUrlTree([{segmentPath: '/one/two'}]); * * // create /team/33/(user/11//right:chat) * router.createUrlTree(['/team', 33, {outlets: {primary: 'user/11', right: 'chat'}}]); * * // remove the right secondary node * router.createUrlTree(['/team', 33, {outlets: {primary: 'user/11', right: null}}]); * * // assuming the current url is `/team/33/user/11` and the route points to `user/11` * * // navigate to /team/33/user/11/details * router.createUrlTree(['details'], {relativeTo: route}); * * // navigate to /team/33/user/22 * router.createUrlTree(['../22'], {relativeTo: route}); * * // navigate to /team/44/user/22 * router.createUrlTree(['../../team/44/user/22'], {relativeTo: route}); * * Note that a value of `null` or `undefined` for `relativeTo` indicates that the * tree should be created relative to the root. * ``` */ createUrlTree(commands, navigationExtras = {}) { const { relativeTo, queryParams, fragment, queryParamsHandling, preserveFragment } = navigationExtras; const f = preserveFragment ? this.currentUrlTree.fragment : fragment; let q = null; switch (queryParamsHandling) { case 'merge': q = { ...this.currentUrlTree.queryParams, ...queryParams }; break; case 'preserve': q = this.currentUrlTree.queryParams; break; default: q = queryParams || null; } if (q !== null) { q = this.removeEmptyProps(q); } let relativeToUrlSegmentGroup; try { const relativeToSnapshot = relativeTo ? relativeTo.snapshot : this.routerState.snapshot.root; relativeToUrlSegmentGroup = createSegmentGroupFromRoute(relativeToSnapshot); } catch (e) { // This is strictly for backwards compatibility with tests that create // invalid `ActivatedRoute` mocks. // Note: the difference between having this fallback for invalid `ActivatedRoute` setups and // just throwing is ~500 test failures. Fixing all of those tests by hand is not feasible at // the moment. if (typeof commands[0] !== 'string' || !commands[0].startsWith('/')) { // Navigations that were absolute in the old way of creating UrlTrees // would still work because they wouldn't attempt to match the // segments in the `ActivatedRoute` to the `currentUrlTree` but // instead just replace the root segment with the navigation result. // Non-absolute navigations would fail to apply the commands because // the logic could not find the segment to replace (so they'd act like there were no // commands). commands = []; } relativeToUrlSegmentGroup = this.currentUrlTree.root; } return createUrlTreeFromSegmentGroup(relativeToUrlSegmentGroup, commands, q, f ?? null); } /** * Navigates to a view using an absolute route path. * * @param url An absolute path for a defined route. The function does not apply any delta to the * current URL. * @param extras An object containing properties that modify the navigation strategy. * * @returns A Promise that resolves to 'true' when navigation succeeds, * to 'false' when navigation fails, or is rejected on error. * * @usageNotes * * The following calls request navigation to an absolute path. * * ``` * router.navigateByUrl("/team/33/user/11"); * * // Navigate without updating the URL * router.navigateByUrl("/team/33/user/11", { skipLocationChange: true }); * ``` * * @see [Routing and Navigation guide](guide/router) * */ navigateByUrl(url, extras = { skipLocationChange: false }) { if (typeof ngDevMode === 'undefined' || ngDevMode) { if (this.isNgZoneEnabled && !NgZone.isInAngularZone()) { this.console.warn(`Navigation triggered outside Angular zone, did you forget to call 'ngZone.run()'?`); } } const urlTree = isUrlTree(url) ? url : this.parseUrl(url); const mergedTree = this.urlHandlingStrategy.merge(urlTree, this.rawUrlTree); return this.scheduleNavigation(mergedTree, IMPERATIVE_NAVIGATION, null, extras); } /** * Navigate based on the provided array of commands and a starting point. * If no starting route is provided, the navigation is absolute. * * @param commands An array of URL fragments with which to construct the target URL. * If the path is static, can be the literal URL string. For a dynamic path, pass an array of path * segments, followed by the parameters for each segment. * The fragments are applied to the current URL or the one provided in the `relativeTo` property * of the options object, if supplied. * @param extras An options object that determines how the URL should be constructed or * interpreted. * * @returns A Promise that resolves to `true` when navigation succeeds, to `false` when navigation * fails, * or is rejected on error. * * @usageNotes * * The following calls request navigation to a dynamic route path relative to the current URL. * * ``` * router.navigate(['team', 33, 'user', 11], {relativeTo: route}); * * // Navigate without updating the URL, overriding the default behavior * router.navigate(['team', 33, 'user', 11], {relativeTo: route, skipLocationChange: true}); * ``` * * @see [Routing and Navigation guide](guide/router) * */ navigate(commands, extras = { skipLocationChange: false }) { validateCommands(commands); return this.navigateByUrl(this.createUrlTree(commands, extras), extras); } /** Serializes a `UrlTree` into a string */ serializeUrl(url) { return this.urlSerializer.serialize(url); } /** Parses a string into a `UrlTree` */ parseUrl(url) { try { return this.urlSerializer.parse(url); } catch { return this.urlSerializer.parse('/'); } } isActive(url, matchOptions) { let options; if (matchOptions === true) { options = { ...exactMatchOptions }; } else if (matchOptions === false) { options = { ...subsetMatchOptions }; } else { options = matchOptions; } if (isUrlTree(url)) { return containsTree(this.currentUrlTree, url, options); } const urlTree = this.parseUrl(url); return containsTree(this.currentUrlTree, urlTree, options); } removeEmptyProps(params) { return Object.keys(params).reduce((result, key) => { const value = params[key]; if (value !== null && value !== undefined) { result[key] = value; } return result; }, {}); } scheduleNavigation(rawUrl, source, restoredState, extras, priorPromise) { if (this.disposed) { return Promise.resolve(false); } let resolve; let reject; let promise; if (priorPromise) { resolve = priorPromise.resolve; reject = priorPromise.reject; promise = priorPromise.promise; } else { promise = new Promise((res, rej) => { resolve = res; reject = rej; }); } // Indicate that the navigation is happening. const taskId = this.pendingTasks.add(); afterNextNavigation(this, () => { // Remove pending task in a microtask to allow for cancelled // initial navigations and redirects within the same task. queueMicrotask(() => this.pendingTasks.remove(taskId)); }); this.navigationTransitions.handleNavigationRequest({ source, restoredState, currentUrlTree: this.currentUrlTree, currentRawUrl: this.currentUrlTree, rawUrl, extras, resolve, reject, promise, currentSnapshot: this.routerState.snapshot, currentRouterState: this.routerState }); // Make sure that the error is propagated even though `processNavigations` catch // handler does not rethrow return promise.catch((e) => { return Promise.reject(e); }); } static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.0.6", ngImport: i0, type: Router, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); } static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.0.6", ngImport: i0, type: Router, providedIn: 'root' }); } } i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.0.6", ngImport: i0, type: Router, decorators: [{ type: Injectable, args: [{ providedIn: 'root' }] }], ctorParameters: () => [] }); function validateCommands(commands) { for (let i = 0; i < commands.length; i++) { const cmd = commands[i]; if (cmd == null) { throw new RuntimeError(4008 /* RuntimeErrorCode.NULLISH_COMMAND */, (typeof ngDevMode === 'undefined' || ngDevMode) && `The requested path contains ${cmd} segment at index ${i}`); } } } function isPublicRouterEvent(e) { return (!(e instanceof BeforeActivateRoutes) && !(e instanceof RedirectRequest)); } //# 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'./models';\nimport {isBrowserTriggeredNavigation, Navigation, NavigationExtras, NavigationTransitions, RestoredState, UrlCreationOptions} from './navigation_transition';\nimport {RouteReuseStrategy} from './route_reuse_strategy';\nimport {ROUTER_CONFIGURATION} from './router_config';\nimport {ROUTES} from './router_config_loader';\nimport {Params} from './shared';\nimport {StateManager} from './statemanager/state_manager';\nimport {UrlHandlingStrategy} from './url_handling_strategy';\nimport {containsTree, IsActiveMatchOptions, isUrlTree, UrlSegmentGroup, UrlSerializer, UrlTree} from './url_tree';\nimport {standardizeConfig, validateConfig} from './utils/config';\nimport {afterNextNavigation} from './utils/navigations';\n\n\n\nfunction defaultErrorHandler(error: any): never {\n  throw error;\n}\n\n/**\n * The equivalent `IsActiveMatchOptions` options for `Router.isActive` is called with `true`\n * (exact = true).\n */\nexport const exactMatchOptions: IsActiveMatchOptions = {\n  paths: 'exact',\n  fragment: 'ignored',\n  matrixParams: 'ignored',\n  queryParams: 'exact'\n};\n\n/**\n * The equivalent `IsActiveMatchOptions` options for `Router.isActive` is called with `false`\n * (exact = false).\n */\nexport const subsetMatchOptions: IsActiveMatchOptions = {\n  paths: 'subset',\n  fragment: 'ignored',\n  matrixParams: 'ignored',\n  queryParams: 'subset'\n};\n\n/**\n * @description\n *\n * A service that provides navigation among views and URL manipulation capabilities.\n *\n * @see {@link Route}\n * @see [Routing and Navigation Guide](guide/router).\n *\n * @ngModule RouterModule\n *\n * @publicApi\n */\n@Injectable({providedIn: 'root'})\nexport class Router {\n  private get currentUrlTree() {\n    return this.stateManager.getCurrentUrlTree();\n  }\n  private get rawUrlTree() {\n    return this.stateManager.getRawUrlTree();\n  }\n  private disposed = false;\n  private nonRouterCurrentEntryChangeSubscription?: SubscriptionLike;\n  private isNgZoneEnabled = false;\n\n  private readonly console = inject(Console);\n  private readonly stateManager = inject(StateManager);\n  private readonly options = inject(ROUTER_CONFIGURATION, {optional: true}) || {};\n  private readonly pendingTasks = inject(InitialRenderPendingTasks);\n  private readonly urlUpdateStrategy = this.options.urlUpdateStrategy || 'deferred';\n  private readonly navigationTransitions = inject(NavigationTransitions);\n  private readonly urlSerializer = inject(UrlSerializer);\n  private readonly location = inject(Location);\n  private readonly urlHandlingStrategy = inject(UrlHandlingStrategy);\n\n  /**\n   * The private `Subject` type for the public events exposed in the getter. This is used internally\n   * to push events to. The separate field allows us to expose separate types in the public API\n   * (i.e., an Observable rather than the Subject).\n   */\n  private _events = new Subject<Event>();\n  /**\n   * An event stream for routing events.\n   */\n  public get events(): Observable<Event> {\n    // TODO(atscott): This _should_ be events.asObservable(). However, this change requires internal\n    // cleanup: tests are doing `(route.events as Subject<Event>).next(...)`. This isn't\n    // allowed/supported but we still have to fix these or file bugs against the teams before making\n    // the change.\n    return this._events;\n  }\n  /**\n   * The current state of routing in this NgModule.\n   */\n  get routerState() {\n    return this.stateManager.getRouterState();\n  }\n\n  /**\n   * A handler for navigation errors in this NgModule.\n   *\n   * @deprecated Subscribe to the `Router` events and watch for `NavigationError` instead.\n   *   `provideRouter` has the `withNavigationErrorHandler` feature to make this easier.\n   * @see {@link withNavigationErrorHandler}\n   */\n  errorHandler: (error: any) => any = this.options.errorHandler || defaultErrorHandler;\n\n  /**\n   * True if at least one navigation event has occurred,\n   * false otherwise.\n   */\n  navigated: boolean = false;\n\n  /**\n   * A strategy for re-using routes.\n   *\n   * @deprecated Configure using `providers` instead:\n   *   `{provide: RouteReuseStrategy, useClass: MyStrategy}`.\n   */\n  routeReuseStrategy: RouteReuseStrategy = inject(RouteReuseStrategy);\n\n  /**\n   * How to handle a navigation request to the current URL.\n   *\n   *\n   * @deprecated Configure this through `provideRouter` or `RouterModule.forRoot` instead.\n   * @see {@link withRouterConfig}\n   * @see {@link provideRouter}\n   * @see {@link RouterModule}\n   */\n  onSameUrlNavigation: OnSameUrlNavigation = this.options.onSameUrlNavigation || 'ignore';\n\n  config: Routes = inject(ROUTES, {optional: true})?.flat() ?? 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