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Tusker
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Code Issues 62 Pull Requests Releases Wiki Activity

Improve scroll perform when loading new rows into table views 

Instead of reloading the whole table view, only insert the rows for
statuses/notifications that were added.
This commit is contained in:
Shadowfacts 2020-01-25 11:11:48 -05:00
parent 6757031dcb
commit 26c99a1a35
Signed by: shadowfacts
GPG Key ID: 94A5AB95422746E5
3 changed files with 43 additions and 21 deletions
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19
Tusker/Screens/Bookmarks/BookmarksTableViewController.swift
View File

@ -15,13 +15,7 @@ class BookmarksTableViewController: EnhancedTableViewController {
let mastodonController: MastodonController
var statuses: [(id: String, state: StatusState)] = [] {
didSet {
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
var statuses: [(id: String, state: StatusState)] = []
var newer: RequestRange?
var older: RequestRange?
@ -55,6 +49,10 @@ class BookmarksTableViewController: EnhancedTableViewController {
self.statuses.append(contentsOf: statuses.map { ($0.id, .unknown) })
self.newer = pagination?.newer
self.older = pagination?.older
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
userActivity = UserActivityManager.bookmarksActivity()
@ -90,7 +88,14 @@ class BookmarksTableViewController: EnhancedTableViewController {
guard case let .success(newStatuses, pagination) = response else { fatalError() }
self.older = pagination?.older
self.mastodonController.cache.addAll(statuses: newStatuses)
let newIndexPaths = (self.statuses.count..<(self.statuses.count + newStatuses.count)).map {
IndexPath(row: $0, section: 0)
}
self.statuses.append(contentsOf: newStatuses.map { ($0.id, .unknown) })
DispatchQueue.main.async {
self.tableView.insertRows(at: newIndexPaths, with: .automatic)
}
}
}

24
Tusker/Screens/Notifications/NotificationsTableViewController.swift
View File

@ -21,13 +21,7 @@ class NotificationsTableViewController: EnhancedTableViewController {
let excludedTypes: [Pachyderm.Notification.Kind]
let groupTypes = [Notification.Kind.favourite, .reblog, .follow]
var groups: [NotificationGroup] = [] {
didSet {
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
var groups: [NotificationGroup] = []
var newer: RequestRange?
var older: RequestRange?
@ -73,6 +67,10 @@ class NotificationsTableViewController: EnhancedTableViewController {
self.newer = pagination?.newer
self.older = pagination?.older
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
@ -133,6 +131,9 @@ class NotificationsTableViewController: EnhancedTableViewController {
let groups = NotificationGroup.createGroups(notifications: newNotifications, only: self.groupTypes)
let newIndexPaths = (self.groups.count..<(self.groups.count + groups.count)).map {
IndexPath(row: $0, section: 0)
}
self.groups.append(contentsOf: groups)
self.mastodonController.cache.addAll(notifications: newNotifications)
@ -140,6 +141,10 @@ class NotificationsTableViewController: EnhancedTableViewController {
self.mastodonController.cache.addAll(accounts: newNotifications.map { $0.account })
self.older = pagination?.older
DispatchQueue.main.async {
self.tableView.insertRows(at: newIndexPaths, with: .automatic)
}
}
}
}
@ -216,6 +221,11 @@ class NotificationsTableViewController: EnhancedTableViewController {
}
DispatchQueue.main.async {
let newIndexPaths = (0..<groups.count).map {
IndexPath(row: $0, section: 0)
}
self.tableView.insertRows(at: newIndexPaths, with: .automatic)
self.refreshControl?.endRefreshing()
// maintain the current position in the list (don't scroll to top)

21
Tusker/Screens/Timeline/TimelineTableViewController.swift
View File

@ -14,13 +14,7 @@ class TimelineTableViewController: EnhancedTableViewController {
var timeline: Timeline!
weak var mastodonController: MastodonController!
var timelineSegments: [[(id: String, state: StatusState)]] = [] {
didSet {
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
var timelineSegments: [[(id: String, state: StatusState)]] = []
var newer: RequestRange?
var older: RequestRange?
@ -69,6 +63,9 @@ class TimelineTableViewController: EnhancedTableViewController {
self.timelineSegments.insert(statuses.map { ($0.id, .unknown) }, at: 0)
self.newer = pagination?.newer
self.older = pagination?.older
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
@ -105,7 +102,12 @@ class TimelineTableViewController: EnhancedTableViewController {
guard case let .success(newStatuses, pagination) = response else { fatalError() }
self.older = pagination?.older
self.mastodonController.cache.addAll(statuses: newStatuses)
let newRows = self.timelineSegments.last!.count..<(self.timelineSegments.last!.count + newStatuses.count)
let newIndexPaths = newRows.map { IndexPath(row: $0, section: self.timelineSegments.count - 1) }
self.timelineSegments[self.timelineSegments.count - 1].append(contentsOf: newStatuses.map { ($0.id, .unknown) })
DispatchQueue.main.async {
self.tableView.insertRows(at: newIndexPaths, with: .none)
}
}
}
}
@ -137,6 +139,11 @@ class TimelineTableViewController: EnhancedTableViewController {
}
DispatchQueue.main.async {
let newIndexPaths = (0..<newStatuses.count).map {
IndexPath(row: $0, section: 0)
}
self.tableView.insertRows(at: newIndexPaths, with: .automatic)
self.refreshControl?.endRefreshing()
// maintain the current position in the list (don't scroll to the top)