73 lines
2.4 KiB
TypeScript
73 lines
2.4 KiB
TypeScript
import {Directive} from '../core/metadata';
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import {StringMap, StringMapWrapper} from 'angular2/src/core/facade/collection';
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import {Router} from './router';
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import {Location} from './location';
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import {Instruction, stringifyInstruction} from './instruction';
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/**
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* The RouterLink directive lets you link to specific parts of your app.
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*
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* Consider the following route configuration:
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* ```
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* @RouteConfig([
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* { path: '/user', component: UserCmp, as: 'user' }
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* ]);
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* class MyComp {}
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* ```
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*
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* When linking to this `user` route, you can write:
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*
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* ```
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* <a [router-link]="['./user']">link to user component</a>
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* ```
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*
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* RouterLink expects the value to be an array of route names, followed by the params
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* for that level of routing. For instance `['/team', {teamId: 1}, 'user', {userId: 2}]`
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* means that we want to generate a link for the `team` route with params `{teamId: 1}`,
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* and with a child route `user` with params `{userId: 2}`.
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*
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* The first route name should be prepended with `/`, `./`, or `../`.
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* If the route begins with `/`, the router will look up the route from the root of the app.
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* If the route begins with `./`, the router will instead look in the current component's
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* children for the route. And if the route begins with `../`, the router will look at the
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* current component's parent.
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*/
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@Directive({
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selector: '[router-link]',
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properties: ['routeParams: routerLink'],
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host: {
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'(click)': 'onClick()',
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'[attr.href]': 'visibleHref',
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'[class.router-link-active]': 'isRouteActive'
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}
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})
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export class RouterLink {
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private _routeParams: any[];
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// the url displayed on the anchor element.
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visibleHref: string;
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// the instruction passed to the router to navigate
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private _navigationInstruction: Instruction;
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constructor(private _router: Router, private _location: Location) {}
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get isRouteActive(): boolean { return this._router.isRouteActive(this._navigationInstruction); }
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set routeParams(changes: any[]) {
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this._routeParams = changes;
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this._navigationInstruction = this._router.generate(this._routeParams);
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// TODO: is this the right spot for this?
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var navigationHref = '/' + stringifyInstruction(this._navigationInstruction);
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this.visibleHref = this._location.normalizeAbsolutely(navigationHref);
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}
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onClick(): boolean {
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this._router.navigateByInstruction(this._navigationInstruction);
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return false;
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}
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}
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