-import { ElementRef, OnInit, ViewChild } 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 {
- private static LINES_PER_PAGE = 3
+export abstract class AbstractVideoList implements OnInit, OnDestroy {
+ private static LINES_PER_PAGE = 4
- @ViewChild('videoElement') videosElement: ElementRef
+ @ViewChild('videosElement') videosElement: ElementRef
@ViewChild(InfiniteScrollerDirective) infiniteScroller: InfiniteScrollerDirective
pagination: ComponentPagination = {
defaultSort: SortField = '-createdAt'
loadOnInit = true
pageHeight: number
- videoWidth = 215
- videoHeight = 230
- videoPages: Video[][]
+ videoWidth: number
+ videoHeight: number
+ videoPages: Video[][] = []
+
+ protected baseVideoWidth = 215
+ protected baseVideoHeight = 230
protected abstract notificationsService: NotificationsService
protected abstract authService: AuthService
protected loadedPages: { [ id: number ]: Video[] } = {}
protected otherRouteParams = {}
+ private resizeSubscription: Subscription
+
abstract getVideosObservable (page: number): Observable<{ videos: Video[], totalVideos: number}>
get user () {
const routeParams = this.route.snapshot.params
this.loadRouteParams(routeParams)
- 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
- }
+ 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 () {
this.previousPage()
}
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)
+ }
}