node_modules/@covalent/core/esm2015/common/services/router-path.service.js

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,uselessCode} checked by tsc
 */
import { Injectable } from '@angular/core';
import { Router, RoutesRecognized } from '@angular/router';
import { filter, pairwise } from 'rxjs/operators';
export class RouterPathService {
    /**
     * @param {?} _router
     */
    constructor(_router) {
        this._router = _router;
        this._router.events.pipe(filter((e) => e instanceof RoutesRecognized), pairwise()).subscribe((e) => {
            RouterPathService._previousRoute = e[0].urlAfterRedirects;
        });
    }
    /*
      * Utility function to get the route the user previously went to
      * good for use in a "back button"
      */
    /**
     * @return {?}
     */
    getPreviousRoute() {
        return RouterPathService._previousRoute;
    }
}
RouterPathService._previousRoute = '/';
RouterPathService.decorators = [
    { type: Injectable }
];
/** @nocollapse */
RouterPathService.ctorParameters = () => [
    { type: Router }
];
if (false) {
    /** @type {?} */
    RouterPathService._previousRoute;
    /** @type {?} */
    RouterPathService.prototype._router;
}
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