@angular/router
Version:
Angular - the routing library
124 lines • 20.1 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.dev/license
*/
import { runInInjectionContext, ɵRuntimeError as RuntimeError } from '@angular/core';
import { of, throwError } from 'rxjs';
import { NavigationCancellationCode } from './events';
import { navigationCancelingError } from './navigation_canceling_error';
import { PRIMARY_OUTLET } from './shared';
import { UrlSegmentGroup, UrlTree } from './url_tree';
export class NoMatch {
constructor(segmentGroup) {
this.segmentGroup = segmentGroup || null;
}
}
export class AbsoluteRedirect extends Error {
constructor(urlTree) {
super();
this.urlTree = urlTree;
}
}
export function noMatch(segmentGroup) {
return throwError(new NoMatch(segmentGroup));
}
export function absoluteRedirect(newTree) {
return throwError(new AbsoluteRedirect(newTree));
}
export function namedOutletsRedirect(redirectTo) {
return throwError(new RuntimeError(4000 /* RuntimeErrorCode.NAMED_OUTLET_REDIRECT */, (typeof ngDevMode === 'undefined' || ngDevMode) &&
`Only absolute redirects can have named outlets. redirectTo: '${redirectTo}'`));
}
export function canLoadFails(route) {
return throwError(navigationCancelingError((typeof ngDevMode === 'undefined' || ngDevMode) &&
`Cannot load children because the guard of the route "path: '${route.path}'" returned false`, NavigationCancellationCode.GuardRejected));
}
export class ApplyRedirects {
constructor(urlSerializer, urlTree) {
this.urlSerializer = urlSerializer;
this.urlTree = urlTree;
}
lineralizeSegments(route, urlTree) {
let res = [];
let c = urlTree.root;
while (true) {
res = res.concat(c.segments);
if (c.numberOfChildren === 0) {
return of(res);
}
if (c.numberOfChildren > 1 || !c.children[PRIMARY_OUTLET]) {
return namedOutletsRedirect(`${route.redirectTo}`);
}
c = c.children[PRIMARY_OUTLET];
}
}
applyRedirectCommands(segments, redirectTo, posParams, currentSnapshot, injector) {
if (typeof redirectTo !== 'string') {
const redirectToFn = redirectTo;
const { queryParams, fragment, routeConfig, url, outlet, params, data, title } = currentSnapshot;
const newRedirect = runInInjectionContext(injector, () => redirectToFn({ params, data, queryParams, fragment, routeConfig, url, outlet, title }));
if (newRedirect instanceof UrlTree) {
throw new AbsoluteRedirect(newRedirect);
}
redirectTo = newRedirect;
}
const newTree = this.applyRedirectCreateUrlTree(redirectTo, this.urlSerializer.parse(redirectTo), segments, posParams);
if (redirectTo[0] === '/') {
throw new AbsoluteRedirect(newTree);
}
return newTree;
}
applyRedirectCreateUrlTree(redirectTo, urlTree, segments, posParams) {
const newRoot = this.createSegmentGroup(redirectTo, urlTree.root, segments, posParams);
return new UrlTree(newRoot, this.createQueryParams(urlTree.queryParams, this.urlTree.queryParams), urlTree.fragment);
}
createQueryParams(redirectToParams, actualParams) {
const res = {};
Object.entries(redirectToParams).forEach(([k, v]) => {
const copySourceValue = typeof v === 'string' && v[0] === ':';
if (copySourceValue) {
const sourceName = v.substring(1);
res[k] = actualParams[sourceName];
}
else {
res[k] = v;
}
});
return res;
}
createSegmentGroup(redirectTo, group, segments, posParams) {
const updatedSegments = this.createSegments(redirectTo, group.segments, segments, posParams);
let children = {};
Object.entries(group.children).forEach(([name, child]) => {
children[name] = this.createSegmentGroup(redirectTo, child, segments, posParams);
});
return new UrlSegmentGroup(updatedSegments, children);
}
createSegments(redirectTo, redirectToSegments, actualSegments, posParams) {
return redirectToSegments.map((s) => s.path[0] === ':'
? this.findPosParam(redirectTo, s, posParams)
: this.findOrReturn(s, actualSegments));
}
findPosParam(redirectTo, redirectToUrlSegment, posParams) {
const pos = posParams[redirectToUrlSegment.path.substring(1)];
if (!pos)
throw new RuntimeError(4001 /* RuntimeErrorCode.MISSING_REDIRECT */, (typeof ngDevMode === 'undefined' || ngDevMode) &&
`Cannot redirect to '${redirectTo}'. Cannot find '${redirectToUrlSegment.path}'.`);
return pos;
}
findOrReturn(redirectToUrlSegment, actualSegments) {
let idx = 0;
for (const s of actualSegments) {
if (s.path === redirectToUrlSegment.path) {
actualSegments.splice(idx);
return s;
}
idx++;
}
return redirectToUrlSegment;
}
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\nimport {Injector, runInInjectionContext, ɵRuntimeError as RuntimeError} from '@angular/core';\nimport {Observable, of, throwError} from 'rxjs';\n\nimport {RuntimeErrorCode} from './errors';\nimport {NavigationCancellationCode} from './events';\nimport {LoadedRouterConfig, RedirectFunction, Route} from './models';\nimport {navigationCancelingError} from './navigation_canceling_error';\nimport {ActivatedRouteSnapshot} from './router_state';\nimport {Params, PRIMARY_OUTLET} from './shared';\nimport {UrlSegment, UrlSegmentGroup, UrlSerializer, UrlTree} from './url_tree';\n\nexport class NoMatch {\n  public segmentGroup: UrlSegmentGroup | null;\n\n  constructor(segmentGroup?: UrlSegmentGroup) {\n    this.segmentGroup = segmentGroup || null;\n  }\n}\n\nexport class AbsoluteRedirect extends Error {\n  constructor(public urlTree: UrlTree) {\n    super();\n  }\n}\n\nexport function noMatch(segmentGroup: UrlSegmentGroup): Observable<any> {\n  return throwError(new NoMatch(segmentGroup));\n}\n\nexport function absoluteRedirect(newTree: UrlTree): Observable<any> {\n  return throwError(new AbsoluteRedirect(newTree));\n}\n\nexport function namedOutletsRedirect(redirectTo: string): Observable<any> {\n  return throwError(\n    new RuntimeError(\n      RuntimeErrorCode.NAMED_OUTLET_REDIRECT,\n      (typeof ngDevMode === 'undefined' || ngDevMode) &&\n        `Only absolute redirects can have named outlets. redirectTo: '${redirectTo}'`,\n    ),\n  );\n}\n\nexport function canLoadFails(route: Route): Observable<LoadedRouterConfig> {\n  return throwError(\n    navigationCancelingError(\n      (typeof ngDevMode === 'undefined' || ngDevMode) &&\n        `Cannot load children because the guard of the route \"path: '${route.path}'\" returned false`,\n      NavigationCancellationCode.GuardRejected,\n    ),\n  );\n}\n\nexport class ApplyRedirects {\n  constructor(\n    private urlSerializer: UrlSerializer,\n    private urlTree: UrlTree,\n  ) {}\n\n  lineralizeSegments(route: Route, urlTree: UrlTree): Observable<UrlSegment[]> {\n    let res: UrlSegment[] = [];\n    let c = urlTree.root;\n    while (true) {\n      res = res.concat(c.segments);\n      if (c.numberOfChildren === 0) {\n        return of(res);\n      }\n\n      if (c.numberOfChildren > 1 || !c.children[PRIMARY_OUTLET]) {\n        return namedOutletsRedirect(`${route.redirectTo!}`);\n      }\n\n      c = c.children[PRIMARY_OUTLET];\n    }\n  }\n\n  applyRedirectCommands(\n    segments: UrlSegment[],\n    redirectTo: string | RedirectFunction,\n    posParams: {[k: string]: UrlSegment},\n    currentSnapshot: ActivatedRouteSnapshot,\n    injector: Injector,\n  ): UrlTree {\n    if (typeof redirectTo !== 'string') {\n      const redirectToFn = redirectTo;\n      const {queryParams, fragment, routeConfig, url, outlet, params, data, title} =\n        currentSnapshot;\n      const newRedirect = runInInjectionContext(injector, () =>\n        redirectToFn({params, data, queryParams, fragment, routeConfig, url, outlet, title}),\n      );\n      if (newRedirect instanceof UrlTree) {\n        throw new AbsoluteRedirect(newRedirect);\n      }\n\n      redirectTo = newRedirect;\n    }\n\n    const newTree = this.applyRedirectCreateUrlTree(\n      redirectTo,\n      this.urlSerializer.parse(redirectTo),\n      segments,\n      posParams,\n    );\n    if (redirectTo[0] === '/') {\n      throw new AbsoluteRedirect(newTree);\n    }\n    return newTree;\n  }\n\n  applyRedirectCreateUrlTree(\n    redirectTo: string,\n    urlTree: UrlTree,\n    segments: UrlSegment[],\n    posParams: {[k: string]: UrlSegment},\n  ): UrlTree {\n    const newRoot = this.createSegmentGroup(redirectTo, urlTree.root, segments, posParams);\n    return new UrlTree(\n      newRoot,\n      this.createQueryParams(urlTree.queryParams, this.urlTree.queryParams),\n      urlTree.fragment,\n    );\n  }\n\n  createQueryParams(redirectToParams: Params, actualParams: Params): Params {\n    const res: Params = {};\n    Object.entries(redirectToParams).forEach(([k, v]) => {\n      const copySourceValue = typeof v === 'string' && v[0] === ':';\n      if (copySourceValue) {\n        const sourceName = v.substring(1);\n        res[k] = actualParams[sourceName];\n      } else {\n        res[k] = v;\n      }\n    });\n    return res;\n  }\n\n  createSegmentGroup(\n    redirectTo: string,\n    group: UrlSegmentGroup,\n    segments: UrlSegment[],\n    posParams: {[k: string]: UrlSegment},\n  ): UrlSegmentGroup {\n    const updatedSegments = this.createSegments(redirectTo, group.segments, segments, posParams);\n\n    let children: {[n: string]: UrlSegmentGroup} = {};\n    Object.entries(group.children).forEach(([name, child]) => {\n      children[name] = this.createSegmentGroup(redirectTo, child, segments, posParams);\n    });\n\n    return new UrlSegmentGroup(updatedSegments, children);\n  }\n\n  createSegments(\n    redirectTo: string,\n    redirectToSegments: UrlSegment[],\n    actualSegments: UrlSegment[],\n    posParams: {[k: string]: UrlSegment},\n  ): UrlSegment[] {\n    return redirectToSegments.map((s) =>\n      s.path[0] === ':'\n        ? this.findPosParam(redirectTo, s, posParams)\n        : this.findOrReturn(s, actualSegments),\n    );\n  }\n\n  findPosParam(\n    redirectTo: string,\n    redirectToUrlSegment: UrlSegment,\n    posParams: {[k: string]: UrlSegment},\n  ): UrlSegment {\n    const pos = posParams[redirectToUrlSegment.path.substring(1)];\n    if (!pos)\n      throw new RuntimeError(\n        RuntimeErrorCode.MISSING_REDIRECT,\n        (typeof ngDevMode === 'undefined' || ngDevMode) &&\n          `Cannot redirect to '${redirectTo}'. Cannot find '${redirectToUrlSegment.path}'.`,\n      );\n    return pos;\n  }\n\n  findOrReturn(redirectToUrlSegment: UrlSegment, actualSegments: UrlSegment[]): UrlSegment {\n    let idx = 0;\n    for (const s of actualSegments) {\n      if (s.path === redirectToUrlSegment.path) {\n        actualSegments.splice(idx);\n        return s;\n      }\n      idx++;\n    }\n    return redirectToUrlSegment;\n  }\n}\n"]}