89 lines
2.5 KiB
TypeScript
89 lines
2.5 KiB
TypeScript
import {CONST_EXPR} from 'angular2/src/facade/lang';
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import {OpaqueToken} from 'angular2/core';
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import {UrlChangeListener} from './platform_location';
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/**
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* `LocationStrategy` is responsible for representing and reading route state
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* from the browser's URL. Angular provides two strategies:
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* {@link HashLocationStrategy} and {@link PathLocationStrategy} (default).
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*
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* This is used under the hood of the {@link Location} service.
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*
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* Applications should use the {@link Router} or {@link Location} services to
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* interact with application route state.
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*
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* For instance, {@link HashLocationStrategy} produces URLs like
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* `http://example.com#/foo`, and {@link PathLocationStrategy} produces
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* `http://example.com/foo` as an equivalent URL.
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*
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* See these two classes for more.
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*/
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export abstract class LocationStrategy {
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abstract path(): string;
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abstract prepareExternalUrl(internal: string): string;
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abstract pushState(state: any, title: string, url: string, queryParams: string): void;
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abstract replaceState(state: any, title: string, url: string, queryParams: string): void;
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abstract forward(): void;
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abstract back(): void;
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abstract onPopState(fn: UrlChangeListener): void;
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abstract getBaseHref(): string;
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}
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/**
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* The `APP_BASE_HREF` token represents the base href to be used with the
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* {@link PathLocationStrategy}.
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*
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* If you're using {@link PathLocationStrategy}, you must provide a provider to a string
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* representing the URL prefix that should be preserved when generating and recognizing
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* URLs.
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*
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* ### Example
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*
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* ```
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* import {Component} from 'angular2/core';
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* import {ROUTER_DIRECTIVES, ROUTER_PROVIDERS, RouteConfig} from 'angular2/router';
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*
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* @Component({directives: [ROUTER_DIRECTIVES]})
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* @RouteConfig([
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* {...},
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* ])
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* class AppCmp {
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* // ...
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* }
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*
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* bootstrap(AppCmp, [
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* ROUTER_PROVIDERS,
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* provide(APP_BASE_HREF, {useValue: '/my/app'})
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* ]);
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* ```
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*/
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export const APP_BASE_HREF: OpaqueToken = CONST_EXPR(new OpaqueToken('appBaseHref'));
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export function normalizeQueryParams(params: string): string {
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return (params.length > 0 && params.substring(0, 1) != '?') ? ('?' + params) : params;
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}
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export function joinWithSlash(start: string, end: string): string {
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if (start.length == 0) {
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return end;
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}
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if (end.length == 0) {
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return start;
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}
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var slashes = 0;
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if (start.endsWith('/')) {
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slashes++;
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}
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if (end.startsWith('/')) {
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slashes++;
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}
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if (slashes == 2) {
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return start + end.substring(1);
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}
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if (slashes == 1) {
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return start + end;
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}
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return start + '/' + end;
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}
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