2 * ========================LICENSE_START=================================
5 * Copyright (C) 2019 AT&T Intellectual Property and Nokia
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ========================LICENSE_END===================================
21 import { CollectionViewer, DataSource } from '@angular/cdk/collections';
22 import { Observable } from 'rxjs/Observable';
23 import { catchError, finalize } from 'rxjs/operators';
24 import { of } from 'rxjs/observable/of';
25 import { BehaviorSubject } from 'rxjs/BehaviorSubject';
26 import { XappMgrService } from '../services/xapp-mgr/xapp-mgr.service';
27 import { XMXapp } from '../interfaces/xapp-mgr.types';
29 export class CatalogDataSource extends DataSource<XMXapp> {
31 private xAppsSubject = new BehaviorSubject<XMXapp[]>([]);
33 private loadingSubject = new BehaviorSubject<boolean>(false);
35 public loading$ = this.loadingSubject.asObservable();
37 constructor(private xappMgrSvc: XappMgrService) {
42 this.loadingSubject.next(true);
43 this.xappMgrSvc.getAll()
45 catchError(() => of([])),
46 finalize(() => this.loadingSubject.next(false))
48 .subscribe(xApps => this.xAppsSubject.next(xApps) )
51 connect(collectionViewer: CollectionViewer): Observable<XMXapp[]> {
52 return this.xAppsSubject.asObservable();
55 disconnect(collectionViewer: CollectionViewer): void {
56 this.xAppsSubject.complete();
57 this.loadingSubject.complete();