🧹 Clean-up / add sample

Signed-off-by: Peter Friese <[email protected]>

code/frontend/MakeItSo/Shared/Extensions/View+InteractiveDismissDisable.swift

@@ -19,7 +19,19 @@
 
 import SwiftUI
 
-struct InteractiveDismissableView<T: View>: UIViewControllerRepresentable {
+extension View {
+ public func interactiveDismissDisabled(_ isDisabled: Bool = true, onAttemptToDismiss: (() -> Void)? = nil) -> some View {
+ InteractiveDismissableView(view: self, isDisabled: isDisabled, onAttemptToDismiss: onAttemptToDismiss)
+ }
+
+ public func interactiveDismissDisabled(_ isDisabled: Bool = true, attemptToDismiss: Binding<Bool>) -> some View {
+ InteractiveDismissableView(view: self, isDisabled: isDisabled) {
+ attemptToDismiss.wrappedValue.toggle()
+ }
+ }
+}
+
+private struct InteractiveDismissableView<T: View>: UIViewControllerRepresentable {
  let view: T
  let isDisabled: Bool
  let onAttemptToDismiss: (() -> Void)?
@@ -55,15 +67,75 @@ struct InteractiveDismissableView<T: View>: UIViewControllerRepresentable {
  }
 }
 
-extension View {
- public func interactiveDismissDisabled(_ isDisabled: Bool = true, onAttemptToDismiss: (() -> Void)? = nil) -> some View {
- InteractiveDismissableView(view: self, isDisabled: isDisabled, onAttemptToDismiss: onAttemptToDismiss)
+struct ContentView: View {
+ @State var showingSheet = false
+ @State var name: String = "Johnny Appleseed"
+ var body: some View {
+ Form {
+ Section("User Profile") {
+ Text(name)
+ }
+ Button("Edit", action: { showingSheet.toggle() })
+ }
+ .sheet(isPresented: $showingSheet) {
+ EditView(name: $name)
+ }
  }
+}
+
+private class ViewModel: ObservableObject {
+ @Published var name: String
+ private var original: String
 
- public func interactiveDismissDisabled(_ isDisabled: Bool = true, attemptToDismiss: Binding<Bool>) -> some View {
- InteractiveDismissableView(view: self, isDisabled: isDisabled) {
- attemptToDismiss.wrappedValue.toggle()
+ var isModified: Bool {
+ print("\(name) - \(original)")
+ return name != original
+ }
+
+ init(name: String) {
+ self.name = name
+ self.original = name
+ }
+}
+
+private struct EditView: View {
+ @Environment(\.dismiss) var dismiss
+ @Binding var name: String
+
+ @StateObject private var viewModel: ViewModel
+ @State var showingConfirmationDialog = false
+
+ init(name: Binding<String>) {
+ self._name = name
+ self._viewModel = StateObject(wrappedValue: ViewModel(name: name.wrappedValue))
+ }
+
+ var body: some View {
+ NavigationView {
+ Form {
+ TextField("Enter your name", text: $viewModel.name)
+ }
+ .navigationTitle("Edit")
+ .navigationBarTitleDisplayMode(.inline)
+ }
+ .interactiveDismissDisabled(viewModel.isModified) {
+ showingConfirmationDialog.toggle()
+ }
+ .confirmationDialog("", isPresented: $showingConfirmationDialog) {
+ Button("Save") {
+ name = viewModel.name
+ dismiss()
+ }
+ Button("Discard", role: .destructive) {
+ dismiss()
+ }
+ Button("Cancel", role: .cancel) { }
  }
  }
+}
 
+struct ContentView_Previews: PreviewProvider {
+ static var previews: some View {
+ ContentView()
+ }
 }