EmbedSwiftUIView.swift

EmbedSwiftUIView.swift

//
//  Created by Dmitry Gulyagin on 24/11/2022.
//

import SwiftUI

/// Wrap SwiftUI view into the container. You can change 'var' properties of the View, and SwiftUI will animate all changes
@dynamicMemberLookup
public final class EmbedSwiftUIView<RootView> where RootView : View {
    
    private let controller: UIHostingController<RootView>
    
    public var view: UIView { controller.view }
    
    public init(rootView: RootView) {
        controller = UIHostingController(rootView: rootView)
        controller.view.backgroundColor = .clear
    }
    
    public subscript<Value>(dynamicMember keyPath: WritableKeyPath<RootView, Value>) -> Value {
        get {
            return controller.rootView[keyPath: keyPath]
        }
        set {
            var view = controller.rootView
            view[keyPath: keyPath] = newValue
            controller.rootView = view
        }
    }
    
}

public extension View {
    func makeEmbeded() -> EmbedSwiftUIView<Self> {
        EmbedSwiftUIView(rootView: self)
    }
}