SwiftUI के लिए अपने मौजूदा व्यावसायिक समाधान को अपनाना। भाग 3. वास्तुकला के साथ काम करना

class NewsItemModel: ObservableObject {
    @Published var title: String = ""
    @Published var description: String = ""
    @Published var image: String = ""
    @Published var dateFormatted: String = ""
}

struct NewsItemContentView: View {
    @ObservedObject var moder: NewsItemModel
    
    init(model: NewsItemModel) {
        self.model = model 
    }
    //... - 
}

• समाचार सूची मॉड्यूल;
• समाचार स्क्रीन मॉड्यूल;
• समाचार खोज मॉड्यूल।

• स्क्रीन शैलियों
• आम यूआई तत्व (LoadingView);
• सूचना अलर्ट;
• कुछ सामान्य तरीके।

struct ContainerView<Content>: IContainer, View where Content: View {
    @ObservedObject var containerModel = ContainerModel()
    private var content: Content

    public init(content: Content) {
        self.content = content
    }

    var body : some View {
        ZStack {
            content
            if (self.containerModel.isLoading) {
                LoaderView()
            }
        }.alert(isPresented: $containerModel.hasError){
            Alert(title: Text(""), message: Text(containerModel.errorText),
                 dismissButton: .default(Text("OK")){
                self.containerModel.errorShown()
                })
        }
    }

class ContainerModel:ObservableObject {
    @Published var hasError: Bool = false
    @Published var errorText: String = ""
    @Published var isLoading: Bool = false
    
    func setupError(error: String){
     //....
       }
    
    func errorShown() {
     //...
    }
    
    func showLoading() {
        self.isLoading = true
    }
    
    func hideLoading() {
        self.isLoading = false
    }
}

protocol  IContainer {
    func showError(error: String)
    
    func showLoading()
    
    func hideLoading()
}

struct ContainerView<Content>: IContainer, View where Content: View&IModelView {
    @ObservedObject var containerModel = ContainerModel()
    private var content: Content

    public init(content: Content) {
        self.content = content
        self.content.viewModel?.listener = self
    }
    //- 
}

protocol IModelView {
    var viewModel: IModel? {get}
}

protocol  IModel:class {
   //....
    var listener:IContainer? {get set}
}

struct ContainerView<Content>: IContainer, View where Content: View&IModelView {
    @ObservedObject var containerModel = ContainerModel()
    private var content: Content

    //- 
    func showError(error: String) {
        self.containerModel.setupError(error: error)
    }
    
    func showLoading() {
        self.containerModel.showLoading()
    }
    
    func hideLoading() {
        self.containerModel.hideLoading()
    }
}