pod ‘GenericDataSources’

github “GenericDataSource/GenericDataSource”

let dataSource = BasicBlockDataSource<Example, BasicTableViewCell>() { (item: Example, cell: BasicTableViewCell, indexPath) -> Void in
cell.titleLabel?.text = item.title
}

// Need to keep a strong reference to our data source.
self.dataSource = dataSource

// register the cell
tableView.ds_register(cellClass: BasicTableViewCell.self)
// bind the data source to the table view
tableView.ds_useDataSource(dataSource)

dataSource.items = <<retrieve items>> // Can be set and altered at anytime

let dataSource = BasicBlockDataSource<Example, BasicCollectionViewCell>() { (item: Example, cell: BasicCollectionViewCell, indexPath) -> Void in
cell.titleLabel?.text = item.title
}

// Need to keep a strong reference to our data source.
self.dataSource = dataSource

// register the cell
collectionView.ds_register(cellClass: BasicCollectionViewCell.self)
// bind the data source to the collection view
collectionView.ds_useDataSource(dataSource)

dataSource.items = <<retrieve items>> // Can be set and altered at anytime

let dataSource1 = CustomDataSource<BasicTableViewCell>() // for table view
let dataSource2 = CustomDataSource<BasicCollectionViewCell>() // for collection view

class AppStoreFeaturedSectionTableViewCell: UITableViewCell { … }
class AppStoreQuickLinkLabelTableViewCell: UITableViewCell { … }
class AppStoreQuickLinkTableViewCell: UITableViewCell { … }
class AppStoreFooterTableViewCell: UITableViewCell { … }
class AppStoreLoadingTableViewCell: UITableViewCell { … }

class AppStoreLoadingDataSource: BasicDataSource<Void, AppStoreLoadingTableViewCell> {
// loading should take full screen size.
override func ds_collectionView(_ collectionView: GeneralCollectionView, sizeForItemAt indexPath: IndexPath) -> CGSize {
return collectionView.size
}
}
class AppStoreFooterDataSource: BasicDataSource<Void, AppStoreFooterTableViewCell> { … }
class AppStoreQuickLinkDataSource: BasicDataSource<FeaturedQuickLink, AppStoreQuickLinkTableViewCell> { … }
class AppStoreFeaturedAppsDataSource: BasicDataSource<FeaturedApp, AppStoreFeaturedAppCollectionViewCell> { … }
class AppStoreFeaturedAppsSectionDataSource: BasicDataSource<FeaturedSection, AppStoreFeaturedSectionTableViewCell> { … }
class AppStoreQuickLinkLabelDataSource: BasicDataSource<String, AppStoreQuickLinkLabelTableViewCell> { … }

class AppStoreFeaturedPageDataSource: CompositeDataSource {
init() { super.init(sectionType: .single)] }

var page: FeaturedPage? {
didSet {
// remove all existing data sources
removeAllDataSources()

guard let page = page else {
return
}

// add featured apps
let featuredApps = AppStoreFeaturedAppsSectionDataSource()
featuredApps.setSelectionHandler(UnselectableSelectionHandler())
featuredApps.items = page.sections
add(featuredApps)

// add quick link label
let quickLinkLabel = AppStoreQuickLinkLabelDataSource()
quickLinkLabel.setSelectionHandler(UnselectableSelectionHandler())
quickLinkLabel.items = [page.quickLinkLabel]
add(quickLinkLabel)

// add quick links
let quickLinks = AppStoreQuickLinkDataSource()
quickLinks.items = page.quickLinks
add(quickLinks)

// add footer
let footer = AppStoreFooterDataSource()
footer.setSelectionHandler(UnselectableSelectionHandler())
footer.items = [Void()] // we add 1 element to show the footer, 2 elements will show it twice. 0 will not show it.
add(footer)
}
}
}

class AppStoreDataSource: SegmentedDataSource {

let loading = AppStoreLoadingDataSource()
let page = AppStoreFeaturedPageDataSource()

// reload data on index change
override var selectedDataSourceIndex: Int {
didSet {
ds_reusableViewDelegate?.ds_reloadData()
}
}

override init() {
super.init()
loading.items = [Void()] // we add 1 element to show the loading, 2 elements will show it twice. 0 will not show it.

add(loading)
add(page)
}
}

tableView.ds_register(cellNib: AppStoreFeaturedSectionTableViewCell.self)
tableView.ds_register(cellNib: AppStoreQuickLinkLabelTableViewCell.self)
tableView.ds_register(cellNib: AppStoreQuickLinkTableViewCell.self)
tableView.ds_register(cellNib: AppStoreFooterTableViewCell.self)
tableView.ds_register(cellNib: AppStoreLoadingTableViewCell.self)

tableView.ds_useDataSource(dataSource)

// show loading indicator
dataSource.selectedDataSourceIndex = 0

// get the data from the service
service.getFeaturedPage { [weak self] page in

// update the data source model
self?.dataSource.page.page = page

// show the page
self?.dataSource.selectedDataSourceIndex = 1
}