-import { OnInit } from '@angular/core'
+import { ElementRef, OnInit, ViewChild } from '@angular/core'
import { ActivatedRoute, Router } from '@angular/router'
+import { isInMobileView } from '@app/shared/misc/utils'
+import { InfiniteScrollerDirective } from '@app/shared/video/infinite-scroller.directive'
import { NotificationsService } from 'angular2-notifications'
import { Observable } from 'rxjs/Observable'
+import { AuthService } from '../../core/auth'
+import { ComponentPagination } from '../rest/component-pagination.model'
import { SortField } from './sort-field.type'
-import { VideoPagination } from './video-pagination.model'
import { Video } from './video.model'
export abstract class AbstractVideoList implements OnInit {
- pagination: VideoPagination = {
+ private static LINES_PER_PAGE = 3
+
+ @ViewChild('videoElement') videosElement: ElementRef
+ @ViewChild(InfiniteScrollerDirective) infiniteScroller: InfiniteScrollerDirective
+
+ pagination: ComponentPagination = {
currentPage: 1,
- itemsPerPage: 25,
+ itemsPerPage: 10,
totalItems: null
}
sort: SortField = '-createdAt'
defaultSort: SortField = '-createdAt'
- videos: Video[] = []
loadOnInit = true
-
- protected notificationsService: NotificationsService
- protected router: Router
- protected route: ActivatedRoute
-
+ pageHeight: number
+ videoWidth = 215
+ videoHeight = 230
+ videoPages: Video[][]
+
+ protected abstract notificationsService: NotificationsService
+ protected abstract authService: AuthService
+ protected abstract router: Router
+ protected abstract route: ActivatedRoute
protected abstract currentRoute: string
-
abstract titlePage: string
- private loadedPages: { [ id: number ]: boolean } = {}
- abstract getVideosObservable (): Observable<{ videos: Video[], totalVideos: number}>
+ protected loadedPages: { [ id: number ]: Video[] } = {}
+ protected otherRouteParams = {}
+
+ abstract getVideosObservable (page: number): Observable<{ videos: Video[], totalVideos: number}>
+
+ get user () {
+ return this.authService.getUser()
+ }
ngOnInit () {
// Subscribe to route changes
const routeParams = this.route.snapshot.params
this.loadRouteParams(routeParams)
- if (this.loadOnInit === true) this.loadMoreVideos('after')
+ if (isInMobileView()) {
+ this.pagination.itemsPerPage = 5
+ this.videoWidth = -1
+ }
+
+ if (this.videoWidth !== -1) {
+ const videosWidth = this.videosElement.nativeElement.offsetWidth
+ this.pagination.itemsPerPage = Math.floor(videosWidth / this.videoWidth) * AbstractVideoList.LINES_PER_PAGE
+ }
+
+ // Video takes all the width
+ if (this.videoWidth === -1) {
+ this.pageHeight = this.pagination.itemsPerPage * this.videoHeight
+ } else {
+ this.pageHeight = this.videoHeight * AbstractVideoList.LINES_PER_PAGE
+ }
+
+ if (this.loadOnInit === true) this.loadMoreVideos(this.pagination.currentPage)
}
onNearOfTop () {
- if (this.pagination.currentPage > 1) {
- this.previousPage()
- }
+ this.previousPage()
}
onNearOfBottom () {
}
}
+ onPageChanged (page: number) {
+ this.pagination.currentPage = page
+ this.setNewRouteParams()
+ }
+
reloadVideos () {
- this.videos = []
this.loadedPages = {}
- this.loadMoreVideos('before')
+ this.loadMoreVideos(this.pagination.currentPage)
}
- loadMoreVideos (where: 'before' | 'after') {
- if (this.loadedPages[this.pagination.currentPage] === true) return
+ loadMoreVideos (page: number) {
+ if (this.loadedPages[page] !== undefined) return
- const observable = this.getVideosObservable()
+ const observable = this.getVideosObservable(page)
observable.subscribe(
({ videos, totalVideos }) => {
// Paging is too high, return to the first one
- if (totalVideos <= ((this.pagination.currentPage - 1) * this.pagination.itemsPerPage)) {
+ if (this.pagination.currentPage > 1 && totalVideos <= ((this.pagination.currentPage - 1) * this.pagination.itemsPerPage)) {
this.pagination.currentPage = 1
this.setNewRouteParams()
return this.reloadVideos()
}
- this.loadedPages[this.pagination.currentPage] = true
+ this.loadedPages[page] = videos
+ this.buildVideoPages()
this.pagination.totalItems = totalVideos
- if (where === 'before') {
- this.videos = videos.concat(this.videos)
- } else {
- this.videos = this.videos.concat(videos)
+ // Initialize infinite scroller now we loaded the first page
+ if (Object.keys(this.loadedPages).length === 1) {
+ // Wait elements creation
+ setTimeout(() => this.infiniteScroller.initialize(), 500)
}
},
- error => this.notificationsService.error('Error', error.text)
+ error => this.notificationsService.error('Error', error.message)
)
}
protected hasMoreVideos () {
+ // No results
+ if (this.pagination.totalItems === 0) return false
+
+ // Not loaded yet
if (!this.pagination.totalItems) return true
const maxPage = this.pagination.totalItems / this.pagination.itemsPerPage
}
protected previousPage () {
- this.pagination.currentPage--
+ const min = this.minPageLoaded()
- this.setNewRouteParams()
- this.loadMoreVideos('before')
+ if (min > 1) {
+ this.loadMoreVideos(min - 1)
+ }
}
protected nextPage () {
- this.pagination.currentPage++
-
- this.setNewRouteParams()
- this.loadMoreVideos('after')
+ this.loadMoreVideos(this.maxPageLoaded() + 1)
}
protected buildRouteParams () {
page: this.pagination.currentPage
}
- return params
+ return Object.assign(params, this.otherRouteParams)
}
protected loadRouteParams (routeParams: { [ key: string ]: any }) {
const routeParams = this.buildRouteParams()
this.router.navigate([ this.currentRoute, routeParams ])
}
+
+ protected buildVideoPages () {
+ this.videoPages = Object.values(this.loadedPages)
+ }
+
+ private minPageLoaded () {
+ return Math.min(...Object.keys(this.loadedPages).map(e => parseInt(e, 10)))
+ }
+
+ private maxPageLoaded () {
+ return Math.max(...Object.keys(this.loadedPages).map(e => parseInt(e, 10)))
+ }
}