-import { OnInit } from '@angular/core'
+import { debounceTime } from 'rxjs/operators'
+import { ElementRef, OnDestroy, OnInit, ViewChild } from '@angular/core'
import { ActivatedRoute, Router } from '@angular/router'
-import { isInMobileView, isInSmallView } from '@app/shared/misc/utils'
+import { Location } from '@angular/common'
+import { InfiniteScrollerDirective } from '@app/shared/video/infinite-scroller.directive'
import { NotificationsService } from 'angular2-notifications'
-import { Observable } from 'rxjs/Observable'
+import { fromEvent, Observable, Subscription } from 'rxjs'
import { AuthService } from '../../core/auth'
import { ComponentPagination } from '../rest/component-pagination.model'
-import { SortField } from './sort-field.type'
+import { VideoSortField } from './sort-field.type'
import { Video } from './video.model'
+import { I18n } from '@ngx-translate/i18n-polyfill'
+import { ScreenService } from '@app/shared/misc/screen.service'
+import { OwnerDisplayType } from '@app/shared/video/video-miniature.component'
+
+export abstract class AbstractVideoList implements OnInit, OnDestroy {
+ private static LINES_PER_PAGE = 4
+
+ @ViewChild('videosElement') videosElement: ElementRef
+ @ViewChild(InfiniteScrollerDirective) infiniteScroller: InfiniteScrollerDirective
-export abstract class AbstractVideoList implements OnInit {
pagination: ComponentPagination = {
currentPage: 1,
- itemsPerPage: 25,
+ itemsPerPage: 10,
totalItems: null
}
- sort: SortField = '-createdAt'
- defaultSort: SortField = '-createdAt'
- videos: Video[] = []
+ sort: VideoSortField = '-publishedAt'
+ categoryOneOf?: number
+ defaultSort: VideoSortField = '-publishedAt'
+ syndicationItems: any = []
+
loadOnInit = true
+ marginContent = true
+ pageHeight: number
+ videoWidth: number
+ videoHeight: number
+ videoPages: Video[][] = []
+ ownerDisplayType: OwnerDisplayType = 'account'
+ firstLoadedPage: number
+ displayModerationBlock = false
+
+ protected baseVideoWidth = 215
+ protected baseVideoHeight = 205
protected abstract notificationsService: NotificationsService
protected abstract authService: AuthService
protected abstract router: Router
protected abstract route: ActivatedRoute
-
+ protected abstract screenService: ScreenService
+ protected abstract i18n: I18n
+ protected abstract location: Location
protected abstract currentRoute: string
-
abstract titlePage: string
- protected otherParams = {}
+ protected loadedPages: { [ id: number ]: Video[] } = {}
+ protected loadingPage: { [ id: number ]: boolean } = {}
+ protected otherRouteParams = {}
- private loadedPages: { [ id: number ]: boolean } = {}
+ private resizeSubscription: Subscription
- abstract getVideosObservable (): Observable<{ videos: Video[], totalVideos: number}>
+ abstract getVideosObservable (page: number): Observable<{ videos: Video[], totalVideos: number}>
+ abstract generateSyndicationList (): any
get user () {
return this.authService.getUser()
ngOnInit () {
// Subscribe to route changes
- const routeParams = this.route.snapshot.params
+ const routeParams = this.route.snapshot.queryParams
this.loadRouteParams(routeParams)
- if (isInMobileView()) {
- this.pagination.itemsPerPage = 5
- }
+ this.resizeSubscription = fromEvent(window, 'resize')
+ .pipe(debounceTime(500))
+ .subscribe(() => this.calcPageSizes())
- if (this.loadOnInit === true) this.loadMoreVideos('after')
+ this.calcPageSizes()
+ if (this.loadOnInit === true) this.loadMoreVideos(this.pagination.currentPage)
+ }
+
+ ngOnDestroy () {
+ if (this.resizeSubscription) this.resizeSubscription.unsubscribe()
+ }
+
+ pageByVideoId (index: number, page: Video[]) {
+ // Video are unique in all pages
+ return page.length !== 0 ? page[0].id : 0
+ }
+
+ videoById (index: number, video: Video) {
+ return video.id
}
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, loadOnTop = false) {
+ this.adjustVideoPageHeight()
+
+ const currentY = window.scrollY
- const observable = this.getVideosObservable()
+ if (this.loadedPages[page] !== undefined) return
+ if (this.loadingPage[page] === true) return
+
+ this.loadingPage[page] = true
+ const observable = this.getVideosObservable(page)
observable.subscribe(
({ videos, totalVideos }) => {
+ this.loadingPage[page] = false
+
+ if (this.firstLoadedPage === undefined || this.firstLoadedPage > page) this.firstLoadedPage = page
+
// Paging is too high, return to the first one
if (this.pagination.currentPage > 1 && totalVideos <= ((this.pagination.currentPage - 1) * this.pagination.itemsPerPage)) {
this.pagination.currentPage = 1
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()
+
+ // At our first load, we did not load the first page
+ // Load the previous page so the user can move on the top (and browser previous pages)
+ if (this.pagination.currentPage > 1) this.loadMoreVideos(this.pagination.currentPage - 1, true)
+ }, 500)
}
+
+ // Insert elements on the top but keep the scroll in the previous position
+ if (loadOnTop) setTimeout(() => { window.scrollTo(0, currentY + this.pageHeight) }, 0)
},
- error => this.notificationsService.error('Error', error.message)
+ error => {
+ this.loadingPage[page] = false
+ this.notificationsService.error(this.i18n('Error'), error.message)
+ }
)
}
+ toggleModerationDisplay () {
+ throw new Error('toggleModerationDisplay is not implemented')
+ }
+
protected hasMoreVideos () {
// No results
if (this.pagination.totalItems === 0) return false
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, true)
+ }
}
protected nextPage () {
- this.pagination.currentPage++
-
- this.setNewRouteParams()
- this.loadMoreVideos('after')
+ this.loadMoreVideos(this.maxPageLoaded() + 1)
}
protected buildRouteParams () {
page: this.pagination.currentPage
}
- return Object.assign(params, this.otherParams)
+ return Object.assign(params, this.otherRouteParams)
}
protected loadRouteParams (routeParams: { [ key: string ]: any }) {
- this.sort = routeParams['sort'] as SortField || this.defaultSort
-
+ this.sort = routeParams['sort'] as VideoSortField || this.defaultSort
+ this.categoryOneOf = routeParams['categoryOneOf']
if (routeParams['page'] !== undefined) {
this.pagination.currentPage = parseInt(routeParams['page'], 10)
} else {
}
protected setNewRouteParams () {
- const routeParams = this.buildRouteParams()
- this.router.navigate([ this.currentRoute, routeParams ])
+ const paramsObject: any = this.buildRouteParams()
+
+ const queryParams = Object.keys(paramsObject).map(p => p + '=' + paramsObject[p]).join('&')
+ this.location.replaceState(this.currentRoute, queryParams)
+ }
+
+ protected buildVideoPages () {
+ this.videoPages = Object.values(this.loadedPages)
+ }
+
+ protected adjustVideoPageHeight () {
+ const numberOfPagesLoaded = Object.keys(this.loadedPages).length
+ if (!numberOfPagesLoaded) return
+
+ this.pageHeight = this.videosElement.nativeElement.offsetHeight / numberOfPagesLoaded
+ }
+
+ protected buildVideoHeight () {
+ // Same ratios than base width/height
+ return this.videosElement.nativeElement.offsetWidth * (this.baseVideoHeight / this.baseVideoWidth)
+ }
+
+ 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 (this.screenService.isInMobileView() || this.baseVideoWidth === -1) {
+ this.pagination.itemsPerPage = 5
+
+ // Video takes all the width
+ this.videoWidth = -1
+ this.videoHeight = this.buildVideoHeight()
+ 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