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
|
import { OnDestroy, OnInit } from '@angular/core'
import { ActivatedRoute, Router } from '@angular/router'
import { NotificationsService } from 'angular2-notifications'
import { Observable } from 'rxjs/Observable'
import { Subscription } from 'rxjs/Subscription'
import { SortField, Video, VideoPagination } from '../../shared'
export abstract class AbstractVideoList implements OnInit, OnDestroy {
pagination: VideoPagination = {
currentPage: 1,
itemsPerPage: 25,
totalItems: null
}
sort: SortField = '-createdAt'
videos: Video[] = []
protected notificationsService: NotificationsService
protected router: Router
protected route: ActivatedRoute
protected subActivatedRoute: Subscription
abstract titlePage: string
abstract getVideosObservable (): Observable<{ videos: Video[], totalVideos: number}>
ngOnInit () {
// Subscribe to route changes
this.subActivatedRoute = this.route.params.subscribe(routeParams => {
this.loadRouteParams(routeParams)
this.getVideos()
})
}
ngOnDestroy () {
this.subActivatedRoute.unsubscribe()
}
getVideos () {
this.videos = []
const observable = this.getVideosObservable()
observable.subscribe(
({ videos, totalVideos }) => {
this.videos = videos
this.pagination.totalItems = totalVideos
},
error => this.notificationsService.error('Error', error.text)
)
}
onPageChanged (event: { page: number }) {
// Be sure the current page is set
this.pagination.currentPage = event.page
this.navigateToNewParams()
}
protected buildRouteParams () {
// There is always a sort and a current page
const params = {
sort: this.sort,
page: this.pagination.currentPage
}
return params
}
protected loadRouteParams (routeParams: { [ key: string ]: any }) {
this.sort = routeParams['sort'] as SortField || '-createdAt'
if (routeParams['page'] !== undefined) {
this.pagination.currentPage = parseInt(routeParams['page'], 10)
} else {
this.pagination.currentPage = 1
}
}
protected navigateToNewParams () {
const routeParams = this.buildRouteParams()
this.router.navigate([ '/videos/list', routeParams ])
}
}
|