angular2/es6/dev/src/router/router_link.js

Angular 2 - a web framework for modern web apps

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    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
import { Directive } from 'angular2/angular2';
import { isString } from 'angular2/src/facade/lang';
import { Router } from './router';
import { Location } from './location';
import { stringifyInstruction } from './instruction';
/**
 * The RouterLink directive lets you link to specific parts of your app.
 *
 * Consider the following route configuration:

 * ```
 * @RouteConfig([
 *   { path: '/user', component: UserCmp, as: 'User' }
 * ]);
 * class MyComp {}
 * ```
 *
 * When linking to this `User` route, you can write:
 *
 * ```
 * <a [router-link]="['./User']">link to user component</a>
 * ```
 *
 * RouterLink expects the value to be an array of route names, followed by the params
 * for that level of routing. For instance `['/Team', {teamId: 1}, 'User', {userId: 2}]`
 * means that we want to generate a link for the `Team` route with params `{teamId: 1}`,
 * and with a child route `User` with params `{userId: 2}`.
 *
 * The first route name should be prepended with `/`, `./`, or `../`.
 * If the route begins with `/`, the router will look up the route from the root of the app.
 * If the route begins with `./`, the router will instead look in the current component's
 * children for the route. And if the route begins with `../`, the router will look at the
 * current component's parent.
 */
export let RouterLink = class {
    constructor(_router, _location) {
        this._router = _router;
        this._location = _location;
    }
    get isRouteActive() { return this._router.isRouteActive(this._navigationInstruction); }
    set routeParams(changes) {
        this._routeParams = changes;
        this._navigationInstruction = this._router.generate(this._routeParams);
        var navigationHref = stringifyInstruction(this._navigationInstruction);
        this.visibleHref = this._location.prepareExternalUrl(navigationHref);
    }
    onClick() {
        // If no target, or if target is _self, prevent default browser behavior
        if (!isString(this.target) || this.target == '_self') {
            this._router.navigateByInstruction(this._navigationInstruction);
            return false;
        }
        return true;
    }
};
RouterLink = __decorate([
    Directive({
        selector: '[router-link]',
        inputs: ['routeParams: routerLink', 'target: target'],
        host: {
            '(click)': 'onClick()',
            '[attr.href]': 'visibleHref',
            '[class.router-link-active]': 'isRouteActive'
        }
    }), 
    __metadata('design:paramtypes', [Router, Location])
], RouterLink);
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