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Reduce redundant status database lookups when updating cell UI

This commit is contained in:
Shadowfacts 2020-09-17 19:38:49 -04:00
parent 5906c374ba
commit 3822d536c8
Signed by untrusted user: shadowfacts
GPG Key ID: 94A5AB95422746E5
3 changed files with 32 additions and 24 deletions
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19
Tusker/Views/Status/BaseStatusTableViewCell.swift
View File

@ -122,19 +122,25 @@ class BaseStatusTableViewCell: UITableViewCell {
}
}
func updateUI(statusID: String, state: StatusState) {
final func updateUI(statusID: String, state: StatusState) {
createObserversIfNecessary()
guard let status = mastodonController.persistentContainer.status(for: statusID) else {
fatalError("Missing cached status")
}
self.statusID = statusID
doUpdateUI(status: status, state: state)
}
func doUpdateUI(status: StatusMO, state: StatusState) {
self.statusState = state
let account = status.account
self.accountID = account.id
updateUI(account: account)
updateUIForPreferences(account: account)
updateUIForPreferences(account: account, status: status)
attachmentsView.updateUI(status: status)
attachmentsView.isAccessibilityElement = status.attachments.count > 0
@ -213,18 +219,19 @@ class BaseStatusTableViewCell: UITableViewCell {
}
}
@objc func preferencesChanged() {
@objc private func preferencesChanged() {
guard let mastodonController = mastodonController,
let account = mastodonController.persistentContainer.account(for: accountID),
let status = mastodonController.persistentContainer.status(for: statusID) else { return }
updateUIForPreferences(account: account)
updateStatusIconsForPreferences(status)
updateUIForPreferences(account: account, status: status)
}
func updateUIForPreferences(account: AccountMO) {
func updateUIForPreferences(account: AccountMO, status: StatusMO) {
avatarImageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarImageView)
displayNameLabel.updateForAccountDisplayName(account: account)
attachmentsView.contentHidden = Preferences.shared.blurAllMedia || (mastodonController.persistentContainer.status(for: statusID)?.sensitive ?? false)
updateStatusIconsForPreferences(status)
}
func updateStatusIconsForPreferences(_ status: StatusMO) {

11
Tusker/Views/Status/ConversationMainStatusTableViewCell.swift
View File

@ -38,10 +38,9 @@ class ConversationMainStatusTableViewCell: BaseStatusTableViewCell {
contentTextView.defaultFont = .systemFont(ofSize: 18)
}
override func updateUI(statusID: String, state: StatusState) {
super.updateUI(statusID: statusID, state: state)
guard let status = mastodonController.persistentContainer.status(for: statusID) else { fatalError() }
override func doUpdateUI(status: StatusMO, state: StatusState) {
super.doUpdateUI(status: status, state: state)
var timestampAndClientText = ConversationMainStatusTableViewCell.dateFormatter.string(from: status.createdAt)
if let application = status.applicationName {
timestampAndClientText += " • \(application)"
@ -63,8 +62,8 @@ class ConversationMainStatusTableViewCell: BaseStatusTableViewCell {
profileAccessibilityElement.accessibilityLabel = account.displayNameWithoutCustomEmoji
}
override func updateUIForPreferences(account: AccountMO) {
super.updateUIForPreferences(account: account)
override func updateUIForPreferences(account: AccountMO, status: StatusMO) {
super.updateUIForPreferences(account: account, status: status)
favoriteAndReblogCountStackView.isHidden = !Preferences.shared.showFavoriteAndReblogCounts
}

26
Tusker/Views/Status/TimelineStatusTableViewCell.swift
View File

@ -68,10 +68,9 @@ class TimelineStatusTableViewCell: BaseStatusTableViewCell {
}
}
override func updateUI(statusID: String, state: StatusState) {
guard var status = mastodonController.persistentContainer.status(for: statusID) else { fatalError("Missing cached status \(statusID)") }
let realStatusID: String
override func doUpdateUI(status: StatusMO, state: StatusState) {
var status = status
if let rebloggedStatus = status.reblog {
reblogStatusID = statusID
rebloggerID = status.account.id
@ -79,25 +78,24 @@ class TimelineStatusTableViewCell: BaseStatusTableViewCell {
updateRebloggerLabel(reblogger: status.account)
status = rebloggedStatus
realStatusID = rebloggedStatus.id
statusID = rebloggedStatus.id
} else {
reblogStatusID = nil
rebloggerID = nil
reblogLabel.isHidden = true
realStatusID = statusID
}
super.updateUI(statusID: realStatusID, state: state)
updateTimestamp()
super.doUpdateUI(status: status, state: state)
doUpdateTimestamp(status: status)
let pinned = showPinned && (status.pinned ?? false)
timestampLabel.isHidden = pinned
pinImageView.isHidden = !pinned
}
@objc override func preferencesChanged() {
super.preferencesChanged()
override func updateUIForPreferences(account: AccountMO, status: StatusMO) {
super.updateUIForPreferences(account: account, status: status)
if let rebloggerID = rebloggerID,
let reblogger = mastodonController.persistentContainer.account(for: rebloggerID) {
@ -121,12 +119,16 @@ class TimelineStatusTableViewCell: BaseStatusTableViewCell {
replyImageView.isHidden = !Preferences.shared.showIsStatusReplyIcon || !showReplyIndicator || status.inReplyToID == nil
}
func updateTimestamp() {
private func updateTimestamp() {
// if the mastodonController is nil (i.e. the delegate is nil), then the screen this cell was a part of has been deallocated
// so we bail out immediately, since there's nothing to update
guard let mastodonController = mastodonController else { return }
guard let status = mastodonController.persistentContainer.status(for: statusID) else { fatalError("Missing cached status \(statusID!)") }
doUpdateTimestamp(status: status)
}
private func doUpdateTimestamp(status: StatusMO) {
timestampLabel.text = status.createdAt.timeAgoString()
timestampLabel.accessibilityLabel = TimelineStatusTableViewCell.relativeDateFormatter.localizedString(for: status.createdAt, relativeTo: Date())