-import { OnInit } from '@angular/core'
+import { ElementRef, OnDestroy, 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 'rxjs/add/operator/debounceTime'
import { Observable } from 'rxjs/Observable'
+import { fromEvent } from 'rxjs/observable/fromEvent'
+import { Subscription } from 'rxjs/Subscription'
import { AuthService } from '../../core/auth'
import { ComponentPagination } from '../rest/component-pagination.model'
import { SortField } from './sort-field.type'
import { Video } from './video.model'
-export abstract class AbstractVideoList implements OnInit {
+export abstract class AbstractVideoList implements OnInit, OnDestroy {
+ private static LINES_PER_PAGE = 4
+
+ @ViewChild('videosElement') 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
+ pageHeight: number
+ videoWidth: number
+ videoHeight: number
+ videoPages: Video[][] = []
+
+ protected baseVideoWidth = 215
+ protected baseVideoHeight = 230
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 = {}
+
+ private resizeSubscription: Subscription
+
+ abstract getVideosObservable (page: number): Observable<{ videos: Video[], totalVideos: number}>
get user () {
return this.authService.getUser()
const routeParams = this.route.snapshot.params
this.loadRouteParams(routeParams)
- if (this.loadOnInit === true) this.loadMoreVideos('after')
+ this.resizeSubscription = fromEvent(window, 'resize')
+ .debounceTime(500)
+ .subscribe(() => this.calcPageSizes())
+
+ this.calcPageSizes()
+ if (this.loadOnInit === true) this.loadMoreVideos(this.pagination.currentPage)
+ }
+
+ ngOnDestroy () {
+ if (this.resizeSubscription) this.resizeSubscription.unsubscribe()
}
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 }) => {
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)
)
}
if (!this.pagination.totalItems) return true
const maxPage = this.pagination.totalItems / this.pagination.itemsPerPage
- return maxPage > this.pagination.currentPage
+ return maxPage > this.maxPageLoaded()
}
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)))
+ }
+
+ private calcPageSizes () {
+ if (isInMobileView() || this.baseVideoWidth === -1) {
+ this.pagination.itemsPerPage = 5
+
+ // Video takes all the width
+ this.videoWidth = -1
+ // Same ratios than base width/height
+ this.videoHeight = this.videosElement.nativeElement.offsetWidth * (this.baseVideoHeight / this.baseVideoWidth)
+ this.pageHeight = this.pagination.itemsPerPage * this.videoHeight
+ } else {
+ this.videoWidth = this.baseVideoWidth
+ this.videoHeight = this.baseVideoHeight
+
+ const videosWidth = this.videosElement.nativeElement.offsetWidth
+ this.pagination.itemsPerPage = Math.floor(videosWidth / this.videoWidth) * AbstractVideoList.LINES_PER_PAGE
+ this.pageHeight = this.videoHeight * AbstractVideoList.LINES_PER_PAGE
+ }
+
+ // Rebuild pages because maybe we modified the number of items per page
+ const videos = [].concat(...this.videoPages)
+ this.loadedPages = {}
+
+ let i = 1
+ // Don't include the last page if it not complete
+ while (videos.length >= this.pagination.itemsPerPage && i < 10000) { // 10000 -> Hard limit in case of infinite loop
+ this.loadedPages[i] = videos.splice(0, this.pagination.itemsPerPage)
+ i++
+ }
+
+ // Re fetch the last page
+ if (videos.length !== 0) {
+ this.loadMoreVideos(i)
+ } else {
+ this.buildVideoPages()
+ }
+
+ console.log('Rebuilt pages with %s elements per page.', this.pagination.itemsPerPage)
+ }
}
projects / github / Chocobozzz / PeerTube.git / blobdiff