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Add prefetching for images in table views

This commit is contained in:
Shadowfacts 2019-02-08 13:37:38 -05:00
parent 37f6a0b4c8
commit 7f3128c958
Signed by untrusted user: shadowfacts
GPG Key ID: 94A5AB95422746E5
4 changed files with 92 additions and 0 deletions
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24
Tusker/Screens/Conversation/ConversationTableViewController.swift
View File

@ -40,6 +40,8 @@ class ConversationTableViewController: EnhancedTableViewController {
tableView.register(UINib(nibName: "StatusTableViewCell", bundle: nil), forCellReuseIdentifier: "statusCell")
tableView.register(UINib(nibName: "ConversationMainStatusTableViewCell", bundle: nil), forCellReuseIdentifier: "mainStatusCell")
tableView.prefetchDataSource = self
statusIDs = [mainStatusID]
guard let mainStatus = MastodonCache.status(for: mainStatusID) else { fatalError("Missing cached status \(mainStatusID!)") }
@ -147,3 +149,25 @@ class ConversationTableViewController: EnhancedTableViewController {
}
extension ConversationTableViewController: StatusTableViewCellDelegate {}
extension ConversationTableViewController: UITableViewDataSourcePrefetching {
func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) {
for indexPath in indexPaths {
guard let status = MastodonCache.status(for: statusIDs[indexPath.row]) else { continue }
ImageCache.avatars.get(status.account.avatar, completion: nil)
for attachment in status.attachments {
ImageCache.attachments.get(attachment.url, completion: nil)
}
}
}
func tableView(_ tableView: UITableView, cancelPrefetchingForRowsAt indexPaths: [IndexPath]) {
for indexPath in indexPaths {
guard let status = MastodonCache.status(for: statusIDs[indexPath.row]) else { continue }
ImageCache.avatars.cancel(status.account.avatar)
for attachment in status.attachments {
ImageCache.attachments.cancel(attachment.url)
}
}
}
}

18
Tusker/Screens/Notifications/NotificationsTableViewController.swift
View File

@ -44,6 +44,8 @@ class NotificationsTableViewController: EnhancedTableViewController {
tableView.register(UINib(nibName: "ActionNotificationTableViewCell", bundle: nil), forCellReuseIdentifier: "actionCell")
tableView.register(UINib(nibName: "FollowNotificationTableViewCell", bundle: nil), forCellReuseIdentifier: "followCell")
tableView.prefetchDataSource = self
let request = MastodonController.client.getNotifications()
MastodonController.client.run(request) { result in
guard case let .success(notifications, pagination) = result else { fatalError() }
@ -150,3 +152,19 @@ class NotificationsTableViewController: EnhancedTableViewController {
}
extension NotificationsTableViewController: StatusTableViewCellDelegate {}
extension NotificationsTableViewController: UITableViewDataSourcePrefetching {
func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) {
for indexPath in indexPaths {
let notification = notifications[indexPath.row]
ImageCache.avatars.get(notification.account.avatar, completion: nil)
}
}
func tableView(_ tableView: UITableView, cancelPrefetchingForRowsAt indexPaths: [IndexPath]) {
for indexPath in indexPaths {
let notification = notifications[indexPath.row]
ImageCache.avatars.cancel(notification.account.url)
}
}
}

26
Tusker/Screens/Profile/ProfileTableViewController.swift
View File

@ -59,6 +59,8 @@ class ProfileTableViewController: EnhancedTableViewController, PreferencesAdapti
tableView.register(UINib(nibName: "StatusTableViewCell", bundle: nil), forCellReuseIdentifier: "statusCell")
tableView.register(UINib(nibName: "ProfileHeaderTableViewCell", bundle: nil), forCellReuseIdentifier: "headerCell")
tableView.prefetchDataSource = self
if let accountID = accountID {
if MastodonCache.account(for: accountID) != nil {
updateAccountUI()
@ -283,3 +285,27 @@ extension ProfileTableViewController: ProfileHeaderTableViewCellDelegate {
}
}
}
extension ProfileTableViewController: UITableViewDataSourcePrefetching {
func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) {
for indexPath in indexPaths {
guard indexPath.section == 1,
let status = MastodonCache.status(for: statusIDs[indexPath.row]) else { continue }
ImageCache.avatars.get(status.account.avatar, completion: nil)
for attachment in status.attachments {
ImageCache.attachments.get(attachment.url, completion: nil)
}
}
}
func tableView(_ tableView: UITableView, cancelPrefetchingForRowsAt indexPaths: [IndexPath]) {
for indexPath in indexPaths {
guard indexPath.section == 1,
let status = MastodonCache.status(for: statusIDs[indexPath.row]) else { continue }
ImageCache.avatars.cancel(status.account.avatar)
for attachment in status.attachments {
ImageCache.attachments.cancel(attachment.url)
}
}
}
}

24
Tusker/Screens/Timeline/TimelineTableViewController.swift
View File

@ -71,6 +71,8 @@ class TimelineTableViewController: EnhancedTableViewController {
tableView.register(UINib(nibName: "StatusTableViewCell", bundle: nil), forCellReuseIdentifier: "statusCell")
tableView.prefetchDataSource = self
guard MastodonController.client?.accessToken != nil else { return }
let request = MastodonController.client.getStatuses(timeline: timeline)
MastodonController.client.run(request) { response in
@ -168,3 +170,25 @@ class TimelineTableViewController: EnhancedTableViewController {
}
extension TimelineTableViewController: StatusTableViewCellDelegate {}
extension TimelineTableViewController: UITableViewDataSourcePrefetching {
func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) {
for indexPath in indexPaths {
guard let status = MastodonCache.status(for: statusIDs[indexPath.row]) else { continue }
ImageCache.avatars.get(status.account.avatar, completion: nil)
for attachment in status.attachments {
ImageCache.attachments.get(attachment.url, completion: nil)
}
}
}
func tableView(_ tableView: UITableView, cancelPrefetchingForRowsAt indexPaths: [IndexPath]) {
for indexPath in indexPaths {
guard let status = MastodonCache.status(for: statusIDs[indexPath.row]) else { continue }
ImageCache.avatars.cancel(status.account.avatar)
for attachment in status.attachments {
ImageCache.attachments.cancel(attachment.url)
}
}
}
}