AsyncReactor is a reactive architecural pattern to organize your Swift code.
AsyncReactor is a reactive architecural pattern. The main component is an AsyncReactor. This AsyncReactor holds the State as well as the Actions.
class RepositorySearchReactor: AsyncReactor {
enum Action {
...
}
struct State {
...
}
@Published
private(set) var state: State
func action(_ action: Action) async {
...
}
}The AsyncReactor is provided to the child view as an EnvironmentObject. This is set by the ReactorView.
ReactorView(RepositorySearchReactor()) {
RepositorySearchView()
}Now the reactor can simply be used in the SwiftUI view as follows.
struct RepositorySearchView: View {
@EnvironmentObject
private var reactor: RepositorySearchReactor
var body: some View {
...
}
}Whenever the State in the reactor changes, the view will updated accordingly. It is also possibel to bind the State.
var body: some View {
Text(reactor.state.name)
}Actions are used to trigger a behaviour in our reactor.
var body: some View {
Button("Click me") {
reactor.action(.buttonClick)
}
}Action bindings enable us to bind values of the state in our view.
struct RepositorySearchView: View {
...
@ActionBinding(RepositorySearchReactor.self,
keyPath: \.hidePrivate,
action: .onHidePrivateToggle)
private var hidePrivate: Bool
var body: some View {
Toggle("Hide Private Repos", isOn: $hidePrivate)
}
}
class RepositorySearchReactor: AsyncReactor {
...
func action(_ action: Action) async {
switch action {
case .onHidePrivateToggle:
state.hidePrivate.toggle()
...
}
}
}An example can be found in the Example folder.
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