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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 | 5x 5x 5x 5x 5x 5x 7x 7x 7x 7x 63x 5x 5x 12x 13x 5x 5x 5x 5x 7x 5x 12x 12x 7x 7x 3x 4x 7x 7x 5x 12x 7x 12x 5x 5x 5x 13x 13x 1x 1x 1x 13x 5x 5x 8x 5x 12x 4x 8x 8x 5x | /* The MIT License Copyright (c) 2017 (null) McNull https://github.com/McNull Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ import { Component, Injector, OnDestroy } from '@angular/core'; import { ActivatedRouteSnapshot, NavigationEnd, Router } from '@angular/router'; import { from, Observable, of, Subscription } from 'rxjs'; import { concat, distinct, filter, first, flatMap, toArray } from 'rxjs/operators'; import { BreadcrumbsResolver, IBreadcrumb } from '../../../shared/models/breadcrumbs'; @Component({ selector: 'cd-breadcrumbs', template: require('./breadcrumbs.component.html'), styles: [] }) export class BreadcrumbsComponent implements OnDestroy { crumbs: IBreadcrumb[] = []; subscription: Subscription; private defaultResolver = new BreadcrumbsResolver(); constructor(private router: Router, private injector: Injector) { this.subscription = this.router.events .pipe(filter((x) => x instanceof NavigationEnd)) .subscribe(() => { const currentRoot = router.routerState.snapshot.root; this._resolveCrumbs(currentRoot) .pipe( flatMap((x) => x), distinct((x) => x.text), toArray(), flatMap((x) => { const y = this.postProcess(x); return this.wrapIntoObservable<IBreadcrumb[]>(y).pipe(first()); }) ) .subscribe((x) => { this.crumbs = x; }); }); } ngOnDestroy(): void { this.subscription.unsubscribe(); } private _resolveCrumbs(route: ActivatedRouteSnapshot): Observable<IBreadcrumb[]> { let crumbs$: Observable<IBreadcrumb[]>; const data = route.routeConfig && route.routeConfig.data; if (data && data.breadcrumbs) { let resolver: BreadcrumbsResolver; if (data.breadcrumbs.prototype instanceof BreadcrumbsResolver) { resolver = this.injector.get(data.breadcrumbs); } else { resolver = this.defaultResolver; } const result = resolver.resolve(route); crumbs$ = this.wrapIntoObservable<IBreadcrumb[]>(result).pipe(first()); } else { crumbs$ = of([]); } if (route.firstChild) { crumbs$ = crumbs$.pipe(concat(this._resolveCrumbs(route.firstChild))); } return crumbs$; } postProcess(breadcrumbs: IBreadcrumb[]) { const result = []; breadcrumbs.forEach((element) => { const split = element.text.split('/'); if (split.length > 1) { element.text = split[split.length - 1]; for (let i = 0; i < split.length - 1; i++) { result.push({ text: split[i], path: null }); } } result.push(element); }); return result; } isPromise(value: any): boolean { return value && typeof value.then === 'function'; } wrapIntoObservable<T>(value: T | Promise<T> | Observable<T>): Observable<T> { if (value instanceof Observable) { return value; } Iif (this.isPromise(value)) { return from(Promise.resolve(value)); } return of(value as T); } } |