mirror of
https://github.com/metabolist/metatext
synced 2024-12-11 08:55:54 +01:00
55 lines
2.3 KiB
Swift
55 lines
2.3 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
|
|
|
|
import UIKit
|
|
import ViewModels
|
|
|
|
final class TableViewDataSource: UITableViewDiffableDataSource<Int, CollectionItem> {
|
|
private let updateQueue =
|
|
DispatchQueue(label: "com.metabolist.metatext.collection-data-source.update-queue")
|
|
|
|
init(tableView: UITableView, viewModelProvider: @escaping (IndexPath) -> CollectionItemViewModel) {
|
|
for cellClass in CollectionItem.cellClasses {
|
|
tableView.register(cellClass, forCellReuseIdentifier: String(describing: cellClass))
|
|
}
|
|
|
|
super.init(tableView: tableView) { tableView, indexPath, item in
|
|
let cell = tableView.dequeueReusableCell(
|
|
withIdentifier: String(describing: item.cellClass),
|
|
for: indexPath)
|
|
|
|
switch (cell, viewModelProvider(indexPath)) {
|
|
case let (statusListCell as StatusListCell, statusViewModel as StatusViewModel):
|
|
statusListCell.viewModel = statusViewModel
|
|
case let (accountListCell as AccountListCell, accountViewModel as AccountViewModel):
|
|
accountListCell.viewModel = accountViewModel
|
|
case let (loadMoreCell as LoadMoreCell, loadMoreViewModel as LoadMoreViewModel):
|
|
loadMoreCell.viewModel = loadMoreViewModel
|
|
case let (notificationListCell as NotificationListCell, notificationViewModel as NotificationViewModel):
|
|
notificationListCell.viewModel = notificationViewModel
|
|
case let (conversationListCell as ConversationListCell, conversationViewModel as ConversationViewModel):
|
|
conversationListCell.viewModel = conversationViewModel
|
|
default:
|
|
break
|
|
}
|
|
|
|
return cell
|
|
}
|
|
}
|
|
|
|
override func apply(_ snapshot: NSDiffableDataSourceSnapshot<Int, CollectionItem>,
|
|
animatingDifferences: Bool = true,
|
|
completion: (() -> Void)? = nil) {
|
|
updateQueue.async {
|
|
super.apply(snapshot, animatingDifferences: animatingDifferences, completion: completion)
|
|
}
|
|
}
|
|
}
|
|
|
|
extension TableViewDataSource {
|
|
func indexPath(itemId: CollectionItem.Id) -> IndexPath? {
|
|
guard let item = snapshot().itemIdentifiers.first(where: { $0.itemId == itemId }) else { return nil }
|
|
|
|
return indexPath(for: item)
|
|
}
|
|
}
|