NSTableview with RXSwift and RxCocoa for OSX

Question

How do I populate the NSTableview with an array using reactive framework? In iOS for UITableview:

self.viewModel.arrayElements.asObservable()
        .observeOn(MainScheduler.instance)
        .bind(to: detailsTableView.rx.items(cellIdentifier: "comment", cellType: UITableViewCell.self)){
            (row,element,cell) in
                 cell.addSubview(cellView)
        }.addDisposableTo(disposeBag)

how can i achieve the same for NSTableView

Knock

Answer 1

I ran into a similar need, and solved it with a BehaviorRelay (using RxSwift 5).

The BehaviorRelay acts as a mediator so it's possible to use regular NSTableViewDataSource and NSTableViewDelegate protocols

The important part is the self.detailsTableView.reloadData() statement which tells the tableview to reload the data, it is not triggered automatically.

Something like this:

var disposeBag = DisposeBag()
var tableDataRelay = BehaviorRelay(value: [Element]())

func viewDidLoad() {
    viewModel.arrayElements.asObservable()
        .observeOn(MainScheduler.instance)
        .bind(to: tableDataRelay).disposed(by: disposeBag)

    tableDataRelay
        .observeOn(MainScheduler.instance)
        .subscribe({ [weak self] evt in
            self.detailsTableView.reloadData()
        }).disposed(by: disposeBag)
}

func numberOfRows(in tableView: NSTableView) -> Int {
    return tableDataRelay.value.count
}

func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
    let element = tableDataRelay.value[row]
    let cellView = tableView.makeView(withIdentifier: tableColumn!.identifier, owner: nil) as? NSTableCellView

    cellView?.textField?.stringValue = element.comment
    return cellView
}

Clinch

Answer 2

Try the below, you should use drivers not observables

read this https://github.com/ReactiveX/RxSwift/blob/master/Documentation/Traits.md

import RxSwift
import RxCocoa

let data = Variable<[String]>([])
let bag  = DisposeBag()

override func viewDidLoad() {
super.viewDidLoad()

    data.asDriver.drive( tableView.rx.items(cellIdentifier: "idenifier")){(row:Int, comment:String, cell:UITableViewCell) in
        cell.title = report
    }.disposed(by:bag)
}

Candlefish

Please refer to my modified post. I was referring to the appkit's NSTableview. – Knock

@Knock I am sorry I cant help you with that – Candlefish