FUIBasicAuthenticationScreen

@MainActor
open class FUIBasicAuthenticationScreen : FUIWelcomeController, FUISolidNavigationBarProtocol, UIScrollViewDelegate

extension FUIBasicAuthenticationScreen: UITextFieldDelegate

This FUIBasicAuthenticationScreen is an UIViewController to display the screen to prompt user to enter username and password to do basic authentication.

It has a headline label and a detail label to display the title and a detail message for this screen. There are two input fields for user input username and password. And one primary action button. The button will be enabled when both the username and password are not empty.

There is also a cancel button on the navigation bar for user to cancel the basic authentication process.

Developer should implement FUIBasicAuthenticationDelegate and set it to the delegate property to handle user responses.

func presentDynamicAuthenticationScreen() {
    let controllers = FUIBasicAuthenticationScreen.createInstanceFromStoryboard()

    let basicAuthController = controllers.basicAuthenticationScreen
    basicAuthController.loadViewIfNeeded()
    basicAuthController.delegate = self

    self.navigationController?.present(controllers.navigationController, animated: true, completion: nil)
}


func didSignIn(_ controller: FUIBasicAuthenticationScreen, username: String, password: String, completion: @escaping ((_ errorMessage: String?) -> Void)) {
    var signInErrorMessage: String? = nil

    // Send username and password to server for verification here

    // Simulate callback from verification process
    DispatchQueue.main.asyncAfter(deadline: .now() + 5.0) {
        // This is for testing purposes only.
        if !self.signInOk || username == password {
            signInErrorMessage = "Sign In Failed"
        }

        completion(signInErrorMessage)
        if signInErrorMessage == nil {
            controller.dismiss(animated: true, completion: nil)
        }
    }
}

func didCancel(_ controller: FUIBasicAuthenticationScreen) {
    print("User Cancelled Basic Authentication")
    controller.dismiss(animated: true, completion: nil)
}

Theming

fdlFUIBasicAuthenticationScreen_headlineLabel {
   font-size: 28;
   font-name: thinSystem;
   font-color: @primary1;
}

fdlFUIBasicAuthenticationScreen_detailLabel {
   font-style: body;
   font-color: @primary1;
}

fdlFUIBasicAuthenticationScreen_primaryActionButton {
   font-style: callout;
   font-color: @primary6;
   corner-radius: 8;
   background-color-normal: @tintColorDark;
   background-color-highlighted: @backgroundGradientTop;

   background-color-disabled: @line;
   font-color-disabled:  #28666666; /*primary2 with 0.4 alpha; "28" is the hex value of 20% for alpha; "666666" is primary2