RetroObjective
Proxy for receive delegate events more practically
About RetroObjective
RetroObjective enable you to receive delegate events by subscribed handler.
This is swift 5 and later generic version of DelegateProxy by DelegateProxy
Requirements
- Swift 5 / Xcode 9
- OS X 10.12 or later
- iOS 10.0 or later
- watchOS 3.0 or later
- tvOS 10.0 or later
Installation
CocoaPods
Add the following to your Podfile:
use_frameworks!
target 'YOUR_TARGET_NAME' do
pod 'RetroObjective', :git => 'https://github.com/amine2233/RetroObjective.git'
end$ pod installCarthage
Add the following to your Cartfile:
github "amine2233/RetroObjective"$ carthage updateBasic Example
Create RetroObjective inherited class.
final class ScrollViewDelegateProxy: RetroObjective, UIScrollViewDelegate, RetroObjectiveType {
func resetDelegateProxy(owner: UIScrollView) {
owner.delegate = self
}
}It can be useful to implements extension.
extension UIScrollView {
var delegateProxy: ScrollViewDelegateProxy {
return .proxy(for: self)
}
}You can receive delegate events as following.
scrollView.delegateProxy
.receive(#selector(UIScrollViewDelegate.scrollViewDidScroll(_:))) { args in
guard let scrollView: UIScrollView = args.value(at: 0) else { return }
print(scrollView.contentOffset)
}Basic Example with Combine
You can add a new publisher on UIScrollView
extension UISCrollView {
var value: AnyPublisher<UISCrollView, Never> {
Publishers.proxyDelegate(delegateProxy, selector: #selector(UIScrollViewDelegate.scrollViewDidScroll(_:)))
.compactMap { $0.value(at: 0) as? UISCrollView }
.eraseToAnyPublisher()
}
}Contribution
Welcome to fork and submit pull requests!!
Before submitting pull request, please ensure you have passed the included tests. If your pull request including new function, please write test cases for it.
License
DelegateProxy is released under the MIT License.