Minor refactoring

Signal/src/ViewControllers/Registration/OnboardingAccountDetailsViewController.swift

@@ -23,11 +23,10 @@ final class OnboardingAccountDetailsViewController : OnboardingBaseViewControlle
         result.isSecureTextEntry = true
         return result
     }()
-    
+
     private var normalizedName: String? {
-        get {
-            return displayNameTextField.text?.ows_stripped()
-        }
+        let result = displayNameTextField.text!.ows_stripped()
+        return !result.isEmpty ? result : nil
     }
     
     override func viewDidLoad() {
@@ -73,21 +72,16 @@ final class OnboardingAccountDetailsViewController : OnboardingBaseViewControlle
         displayNameTextField.becomeFirstResponder()
     }
     
-    @objc private func goToSeedStep(profileName: String? = nil) {
-        onboardingController.pushPublicKeyViewController(from: self, profileName: profileName)
-    }
-    
     @objc private func updateProfile() {
-        guard let normalizedName = self.normalizedName else {
-            self.goToSeedStep()
-            return
-        }
-        
-        if (OWSProfileManager.shared().isProfileNameTooLong(normalizedName)) {
-            OWSAlerts.showErrorAlert(message: NSLocalizedString("PROFILE_VIEW_ERROR_PROFILE_NAME_TOO_LONG", comment: "Error message shown when user tries to update profile with a profile name that is too long"))
-            return
+        if let normalizedName = normalizedName {
+            guard !OWSProfileManager.shared().isProfileNameTooLong(normalizedName) else {
+                return OWSAlerts.showErrorAlert(message: NSLocalizedString("PROFILE_VIEW_ERROR_PROFILE_NAME_TOO_LONG", comment: "Error message shown when user tries to update profile with a profile name that is too long"))
+            }
         }
-        
-        self.goToSeedStep(profileName: normalizedName)
+        goToSeedStep()
+    }
+
+    @objc private func goToSeedStep() {
+        onboardingController.pushPublicKeyViewController(from: self, userName: normalizedName)
     }
 }

Signal/src/ViewControllers/Registration/OnboardingController.swift

@@ -128,9 +128,9 @@ public class OnboardingController: NSObject {
         viewController.navigationController?.pushViewController(accountDetailsVC, animated: true)
     }
     
-    func pushPublicKeyViewController(from viewController: UIViewController, profileName: String?) {
+    func pushPublicKeyViewController(from viewController: UIViewController, userName: String?) {
         AssertIsOnMainThread()
-        let publicKeyVC = OnboardingPublicKeyViewController(onboardingController: self, profileName: profileName)
+        let publicKeyVC = OnboardingPublicKeyViewController(onboardingController: self, userName: userName)
         viewController.navigationController?.pushViewController(publicKeyVC, animated: true)
     }
 

Signal/src/ViewControllers/Registration/OnboardingPublicKeyViewController.swift

@@ -5,7 +5,7 @@ final class OnboardingPublicKeyViewController : OnboardingBaseViewController {
     private var keyPair: ECKeyPair! { didSet { updateMnemonic() } }
     private var hexEncodedPublicKey: String!
     private var mnemonic: String! { didSet { mnemonicLabel.text = mnemonic } }
-    private var profileName: String?
+    private var userName: String?
     
     private lazy var mnemonicLabel: UILabel = {
         let result = createExplanationLabel(text: "")
@@ -17,10 +17,9 @@ final class OnboardingPublicKeyViewController : OnboardingBaseViewController {
         return result
     }()
     
-    @objc
-    public init(onboardingController: OnboardingController, profileName: String?) {
-        super.init(onboardingController: onboardingController);
-        self.profileName = profileName
+    init(onboardingController: OnboardingController, userName: String?) {
+        super.init(onboardingController: onboardingController)
+        self.userName = userName
     }
     
     override public func viewDidLoad() {
@@ -81,10 +80,10 @@ final class OnboardingPublicKeyViewController : OnboardingBaseViewController {
             strongSelf.onboardingController.verificationDidComplete(fromView: strongSelf)
         }
         
-        if let name = self.profileName {
+        if let userName = userName {
             // Try save the profile name
-            OWSProfileManager.shared().updateLocalProfileName(name, avatarImage: nil, success: verificationComplete, failure: {
-                Logger.warn("Failed to set profile name")
+            OWSProfileManager.shared().updateLocalProfileName(userName, avatarImage: nil, success: verificationComplete, failure: {
+                Logger.warn("Failed to set user name")
                 verificationComplete()
             })
         } else {