X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=client%2Fsrc%2Fapp%2Fshared%2Fvideo%2Fabstract-video-list.ts;h=1f43f974c372f7446557755fed44343847097f70;hb=71e318b4fe66175d03c7c82357d60062eb68af81;hp=a25fc532c4b319c37ab4bcd59b45eae16273b5c8;hpb=3290f37c76784f1b96cefb5d389e48db56033b0a;p=github%2FChocobozzz%2FPeerTube.git

diff --git a/client/src/app/shared/video/abstract-video-list.ts b/client/src/app/shared/video/abstract-video-list.ts
index a25fc532c..1f43f974c 100644
--- a/client/src/app/shared/video/abstract-video-list.ts
+++ b/client/src/app/shared/video/abstract-video-list.ts
@@ -1,38 +1,65 @@
-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 = []
+
   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 ()
 
   get user () {
     return this.authService.getUser()
@@ -40,20 +67,32 @@ export abstract class AbstractVideoList implements OnInit {
 
   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 () {
@@ -62,19 +101,33 @@ export abstract class AbstractVideoList implements OnInit {
     }
   }
 
+  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
@@ -82,19 +135,36 @@ export abstract class AbstractVideoList implements OnInit {
           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
@@ -103,21 +173,19 @@ export abstract class AbstractVideoList implements OnInit {
     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 () {
@@ -127,12 +195,12 @@ export abstract class AbstractVideoList implements OnInit {
       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 {
@@ -141,7 +209,71 @@ export abstract class AbstractVideoList implements OnInit {
   }
 
   protected setNewRouteParams () {
-    const routeParams = this.buildRouteParams()
-    this.router.navigate([ this.currentRoute, routeParams ])
+    const paramsObject = 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)
   }
 }