142 lines
3.5 KiB
TypeScript
142 lines
3.5 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {Route, UrlMatchResult} from './config';
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import {UrlSegment, UrlSegmentGroup} from './url_tree';
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/**
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* @whatItDoes Name of the primary outlet.
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*
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* @stable
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*/
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export const PRIMARY_OUTLET = 'primary';
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/**
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* A collection of parameters.
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*
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* @stable
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*/
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export type Params = {
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[key: string]: any
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};
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/**
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* Matrix and Query parameters.
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*
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* `ParamMap` makes it easier to work with parameters as they could have either a single value or
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* multiple value. Because this should be known by the user, calling `get` or `getAll` returns the
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* correct type (either `string` or `string[]`).
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*
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* The API is inspired by the URLSearchParams interface.
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* see https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams
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*
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* @stable
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*/
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export interface ParamMap {
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has(name: string): boolean;
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/**
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* Return a single value for the given parameter name:
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* - the value when the parameter has a single value,
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* - the first value if the parameter has multiple values,
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* - `null` when there is no such parameter.
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*/
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get(name: string): string|null;
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/**
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* Return an array of values for the given parameter name.
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*
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* If there is no such parameter, an empty array is returned.
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*/
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getAll(name: string): string[];
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/** Name of the parameters */
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readonly keys: string[];
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}
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class ParamsAsMap implements ParamMap {
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private params: Params;
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constructor(params: Params) { this.params = params || {}; }
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has(name: string): boolean { return this.params.hasOwnProperty(name); }
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get(name: string): string|null {
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if (this.has(name)) {
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const v = this.params[name];
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return Array.isArray(v) ? v[0] : v;
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}
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return null;
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}
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getAll(name: string): string[] {
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if (this.has(name)) {
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const v = this.params[name];
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return Array.isArray(v) ? v : [v];
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}
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return [];
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}
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get keys(): string[] { return Object.keys(this.params); }
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}
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/**
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* Convert a {@link Params} instance to a {@link ParamMap}.
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*
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* @stable
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*/
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export function convertToParamMap(params: Params): ParamMap {
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return new ParamsAsMap(params);
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}
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const NAVIGATION_CANCELING_ERROR = 'ngNavigationCancelingError';
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export function navigationCancelingError(message: string) {
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const error = Error('NavigationCancelingError: ' + message);
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(error as any)[NAVIGATION_CANCELING_ERROR] = true;
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return error;
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}
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export function isNavigationCancelingError(error: Error) {
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return (error as any)[NAVIGATION_CANCELING_ERROR];
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}
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export function defaultUrlMatcher(
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segments: UrlSegment[], segmentGroup: UrlSegmentGroup, route: Route): UrlMatchResult {
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const path = route.path;
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const parts = path.split('/');
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const posParams: {[key: string]: UrlSegment} = {};
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const consumed: UrlSegment[] = [];
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let currentIndex = 0;
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for (let i = 0; i < parts.length; ++i) {
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if (currentIndex >= segments.length) return null;
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const current = segments[currentIndex];
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const p = parts[i];
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const isPosParam = p.startsWith(':');
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if (!isPosParam && p !== current.path) return null;
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if (isPosParam) {
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posParams[p.substring(1)] = current;
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}
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consumed.push(current);
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currentIndex++;
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}
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if (route.pathMatch === 'full' &&
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(segmentGroup.hasChildren() || currentIndex < segments.length)) {
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return null;
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} else {
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return {consumed, posParams};
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}
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}
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