guys! I'm trying to migrate from Swift 2 to Swift 4. Project is using Bond and ReactiveKit frameworks. I have extension for UISearchBar. So I'm facing a problem migrating from this:
import UIKit
import Bond
import ReactiveKit
public extension UISearchBar {
public var bnd_delegate: ProtocolProxy {
return protocolProxy(for: UISearchBarDelegate.self, setter: NSSelectorFromString("setDelegate:"))
}
}
public extension UISearchBar {
public var bnd_text: DynamicSubject<UISearchBar, String?> {
let dispatcher: (PublishSubject<Void, NoError>, UISearchBar, String) -> Void = { _ in }
let selector = #selector(UISearchBarDelegate.searchBar(_:textDidChange:))
return DynamicSubject(
target: self,
signal: bnd_delegate.signal(for: selector, dispatch: dispatcher),
get: { $0.text },
set: { $0.text = $1 }
)
}
}
I already made some changes and become to this code:
import UIKit
import Bond
import ReactiveKit
public extension UISearchBar {
public var delegate: ProtocolProxy {
return protocolProxy(for: UISearchBarDelegate.self, setter: NSSelectorFromString("setDelegate:"))
}
public var text: DynamicSubject<String?> {
let dispatcher: (PublishSubject<Void, NoError>, UISearchBar, String) -> Void = { _,_,_ in }
let selector = #selector(UISearchBarDelegate.searchBar(_:textDidChange:))
return DynamicSubject<String?>(
target: self,
signal: delegate.signal(for: selector, dispatch: dispatcher),
get: { $0.text },
set: { $0.text = $1 }
)
}
}
Currently I have error with DynamicSubject: Generic parameter 'A' could not be inferred. And it is strange, because I checked what does my 'dispatch' takes as a value: (for: Selector, dispatch: (PublishSubject< S, NoError>, A, B) -> R).
I've tried to play with number of variables for dispatch, but get nothing. It seems to me Xcode doesn't recognize any variable starting after PublishSubject argument.
I want to know what I'm doing wrong.
If you ever migrated from old versions of ReactiveKit/Bond implemented syntax, here is how to do it for your UIKit Reactive Extensions:
import UIKit
import Bond
import ReactiveKit
extension ReactiveExtensions where Base: UISearchBar {
var delegate: ProtocolProxy {
return base.protocolProxy(for: UISearchBarDelegate.self, setter: NSSelectorFromString("setDelegate:"))
}
var text: DynamicSubject<String?> {
let selector = #selector(UISearchBarDelegate.searchBar(_:textDidChange:))
let textChanged = delegate.signal(for: selector) { (subj: SafePublishSubject<Void>, _: UISearchBar, _: NSString) in
subj.next(())
}
return dynamicSubject(
signal: textChanged,
get: { $0.text },
set: { $0.text = $1 }
)
}
}
extension UISearchBar: BindableProtocol {
public func bind(signal: SafeSignal<String?>) -> Disposable {
return reactive.text.bind(signal: signal)
}
}