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59 lines
2.5 KiB
Swift
59 lines
2.5 KiB
Swift
final class BookmarksListCellStrategy {
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private enum CellId {
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static let listItem = "BookmarksListCell"
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static let subgroup = "SubgroupCell"
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static let sectionHeader = "SectionHeader"
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}
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typealias CheckHandlerClosure = (IBookmarksListSectionViewModel, Int, Bool) -> Void
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var cellCheckHandler: CheckHandlerClosure?
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typealias VisibilityHandlerClosure = (IBookmarksListSectionViewModel) -> Void
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var cellVisibilityHandler: VisibilityHandlerClosure?
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func registerCells(_ tableView: UITableView) {
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tableView.register(UINib(nibName: "BookmarksListCell", bundle: nil), forCellReuseIdentifier: CellId.listItem)
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tableView.register(UINib(nibName: "SubgroupCell", bundle: nil), forCellReuseIdentifier: CellId.subgroup)
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tableView.register(UINib(nibName: "BookmarksListSectionHeader", bundle: nil),
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forHeaderFooterViewReuseIdentifier: CellId.sectionHeader)
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}
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func tableCell(_ tableView: UITableView,
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for viewModel: IBookmarksListSectionViewModel,
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at indexPath: IndexPath) -> UITableViewCell {
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switch viewModel {
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case let bookmarksSection as IBookmarksSectionViewModel:
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let bookmark = bookmarksSection.bookmarks[indexPath.row]
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let cell = tableView.dequeueReusableCell(withIdentifier: CellId.listItem, for: indexPath) as! BookmarksListCell
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cell.config(bookmark)
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return cell
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case let tracksSection as ITracksSectionViewModel:
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let track = tracksSection.tracks[indexPath.row]
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let cell = tableView.dequeueReusableCell(withIdentifier: CellId.listItem, for: indexPath) as! BookmarksListCell
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cell.config(track)
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return cell
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case let subgroupsSection as ISubgroupsSectionViewModel:
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let subgroup = subgroupsSection.subgroups[indexPath.row]
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let cell = tableView.dequeueReusableCell(withIdentifier: CellId.subgroup, for: indexPath) as! SubgroupCell
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cell.config(subgroup)
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cell.checkHandler = { [weak self] checked in
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self?.cellCheckHandler?(viewModel, indexPath.row, checked)
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}
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return cell
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default:
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fatalError("Unexpected item")
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}
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}
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func headerView(_ tableView: UITableView,
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for viewModel: IBookmarksListSectionViewModel) -> UITableViewHeaderFooterView {
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let headerView = tableView.dequeueReusableHeaderFooterView(withIdentifier: CellId.sectionHeader)
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as! BookmarksListSectionHeader
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headerView.config(viewModel)
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headerView.visibilityHandler = { [weak self] in
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self?.cellVisibilityHandler?(viewModel)
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}
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return headerView
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}
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}
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