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RxSampleのサンプルを読んで見るwiki編
import UIKit
#if !RX_NO_MODULE
import RxSwift
import RxCocoa
#endif
class WikipediaSearchViewController: ViewController {
@IBOutlet var searchBar: UISearchBar!
@IBOutlet var resultsTableView: UITableView!
@IBOutlet var emptyView: UIView!
override func awakeFromNib() {
super.awakeFromNib()
}
// lifecycle
override func viewDidLoad() {
super.viewDidLoad()
self.edgesForExtendedLayout = .all
configureTableDataSource()
configureKeyboardDismissesOnScroll()
configureNavigateOnRowClick()
configureActivityIndicatorsShow()
}
func configureTableDataSource() {
resultsTableView.register(UINib(nibName: "WikipediaSearchCell", bundle: nil), forCellReuseIdentifier: "WikipediaSearchCell")
resultsTableView.rowHeight = 194
resultsTableView.hideEmptyCells()
// This is for clarity only, don't use static dependencies
let API = DefaultWikipediaAPI.sharedAPI
let results = searchBar.rx.text #サーチバーにテキストが入力されたら...
.asDriver() //Driver Unitとして扱う
.throttle(0.3)
.distinctUntilChanged()
.flatMapLatest { query in
API.getSearchResults(query)
.retry(3)
.retryOnBecomesReachable([], reachabilityService: Dependencies.sharedDependencies.reachabilityService)
.startWith([]) // clears results on new search term
.asDriver(onErrorJustReturn: [])
}
.map { results in
results.map(SearchResultViewModel.init)
}
results
.drive(resultsTableView.rx.items(cellIdentifier: "WikipediaSearchCell", cellType: WikipediaSearchCell.self)) { (_, viewModel, cell) in
cell.viewModel = viewModel
}
.addDisposableTo(disposeBag)
results
.map { $0.count != 0 }
.drive(self.emptyView.rx.hidden)
.addDisposableTo(disposeBag)
}
func configureKeyboardDismissesOnScroll() {
let searchBar = self.searchBar
resultsTableView.rx.contentOffset
.asDriver()
.drive(onNext: { _ in
if searchBar?.isFirstResponder ?? false {
_ = searchBar?.resignFirstResponder()
}
})
.addDisposableTo(disposeBag)
}
func configureNavigateOnRowClick() {
let wireframe = DefaultWireframe.sharedInstance
resultsTableView.rx.modelSelected(SearchResultViewModel.self)
.asDriver()
.drive(onNext: { searchResult in
wireframe.open(url:searchResult.searchResult.URL)
})
.addDisposableTo(disposeBag)
}
func configureActivityIndicatorsShow() {
Driver.combineLatest(
DefaultWikipediaAPI.sharedAPI.loadingWikipediaData,
DefaultImageService.sharedImageService.loadingImage
) { $0 || $1 }
.distinctUntilChanged()
.drive(UIApplication.shared.rx.networkActivityIndicatorVisible)
.addDisposableTo(disposeBag)
}
}
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