@universis/common
Version:
Universis - common directives and services
67 lines (66 loc) • 8.06 kB
JavaScript
import { Injectable } from '@angular/core';
import { DefaultUrlSerializer, NavigationEnd, NavigationStart, PRIMARY_OUTLET, Router } from '@angular/router';
import { BehaviorSubject } from 'rxjs';
import { filter, first, map } from 'rxjs/operators';
/**
*
* Displays Loading Spinner
* @export
* @class LoadingService
*/
export class ReferrerRouteService {
constructor(router) {
this.router = router;
this.referrer$ = new BehaviorSubject(null);
router.events
.pipe(filter(event => event instanceof NavigationEnd || event instanceof NavigationStart))
.subscribe((event) => {
if (event instanceof NavigationStart) {
if (router.routerState.snapshot && router.routerState.snapshot.url.length) {
this._referrer = router.routerState.snapshot.url;
}
else {
this._referrer = null;
}
}
else if (event instanceof NavigationEnd) {
if (this._referrer != null && this._referrer !== event.urlAfterRedirects) {
this.referrer$.next(this._referrer);
this._referrer = null;
}
}
});
}
get first$() {
return this.referrer$.pipe(first());
}
get routeParams$() {
return this.referrer$.pipe(first()).pipe(map((url) => {
if (url) {
const urlSerializer = new DefaultUrlSerializer();
const tree = urlSerializer.parse(url);
const queryParams = tree.queryParams;
tree.queryParams = {};
const fragment = tree.fragment;
tree.fragment = null;
tree.queryParams = {};
const g = tree.root.children[PRIMARY_OUTLET];
const commands = g.segments.map((segment) => segment.path);
commands.splice(0, 0, '/');
return {
commands,
queryParams,
fragment
};
}
}));
}
}
ReferrerRouteService.decorators = [
{ type: Injectable }
];
/** @nocollapse */
ReferrerRouteService.ctorParameters = () => [
{ type: Router }
];
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