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Code Issues Projects Releases Wiki Activity

eagerly load entire album to populate rail

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This commit is contained in:
Michael Kirk 2019-01-14 14:21:31 -07:00
parent 101d17cfeb
commit 7fddb35715
1 changed files with 16 additions and 1 deletions
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17
Signal/src/ViewControllers/MediaGalleryViewController.swift
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@ -1,5 +1,5 @@
//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
//
import Foundation
@ -377,6 +377,11 @@ class MediaGallery: NSObject, MediaGalleryDataSource, MediaTileViewControllerDel
// For a speedy load, we only fetch a few items on either side of
// the initial message
ensureGalleryItemsLoaded(.around, item: initialDetailItem, amount: 10)
// We lazily load media into the gallery, but with large albums, we want to be sure
// we load all the media required to render the album's media rail.
ensureAlbumEntirelyLoaded(galleryItem: initialDetailItem)
self.initialDetailItem = initialDetailItem
let pageViewController = MediaPageViewController(initialItem: initialDetailItem, mediaGalleryDataSource: self, uiDatabaseConnection: self.uiDatabaseConnection, options: self.options)
@ -738,6 +743,16 @@ class MediaGallery: NSObject, MediaGalleryDataSource, MediaTileViewControllerDel
return galleryItem
}
func ensureAlbumEntirelyLoaded(galleryItem: MediaGalleryItem) {
ensureGalleryItemsLoaded(.before, item: galleryItem, amount: UInt(galleryItem.albumIndex))
let followingCount = galleryItem.message.attachmentIds.count - 1 - galleryItem.albumIndex
guard followingCount >= 0 else {
return
}
ensureGalleryItemsLoaded(.after, item: galleryItem, amount: UInt(followingCount))
}
var galleryAlbums: [String: MediaGalleryAlbum] = [:]
func getAlbum(item: MediaGalleryItem) -> MediaGalleryAlbum? {
guard let albumMessageId = item.attachmentStream.albumMessageId else {