Add support of not require display name on signing up

Auth/FirebaseAuthUI/FUIAuth.h

@@ -128,10 +128,12 @@ __attribute__((deprecated("Instead use authUI:didSignInWithAuthDataResult:error:
     to allow sign-up UI customizations.
     @param authUI The @c FUIAuth instance sending the message.
     @param email The email user is using for sin-in.
+    @param requireDisplayName Whether the displayname field is required .
     @return an instance of @c FUIPasswordSignUpViewController subclass.
  */
 - (FUIPasswordSignUpViewController *)passwordSignUpViewControllerForAuthUI:(FUIAuth *)authUI
-                                                                     email:(NSString *)email;
+                                                                     email:(NSString *)email
+                                                        requireDisplayName:(BOOL)requireDisplayName;
 
 /** @fn passwordRecoveryViewControllerForAuthUI:email:
     @brief Sent to the receiver to ask for an instance of @c FUIPasswordRecoveryViewController subclass

EmailAuth/FirebaseEmailAuthUI/FUIEmailAuth.h

@@ -36,10 +36,34 @@ NS_ASSUME_NONNULL_BEGIN
  */
 @property(nonatomic, strong, readwrite, nullable) NSString *emailLink;
 
+/** @fn initAuthAuthUI:signInMethod:forceSameDevice:allowNewEmailAccounts:actionCodeSetting:
+    @brief Initializer with several configurations.
+    @param authUI The auth UI object that this auth UI provider associate with.
+    @param signInMethod The email sign in method, which can be password or email link.
+    @param forceSameDevice Indicate whether for the email sign in link to be open on the same device.
+    @param allowNewEmailAccounts Indicate whether allow sign up if the user doesn't exist.
+    @param actionCodeSettings The action code settings for email actions.
+ */
+- (instancetype)initAuthAuthUI:(FUIAuth *)authUI
+                  signInMethod:(NSString *)signInMethod
+               forceSameDevice:(BOOL)forceSameDevice
+         allowNewEmailAccounts:(BOOL)allowNewEmailAccounts
+             actionCodeSetting:(FIRActionCodeSettings *)actionCodeSettings;
+
+/** @fn initAuthAuthUI:signInMethod:forceSameDevice:allowNewEmailAccounts:requireDisplayName:actionCodeSetting:
+    @brief Initializer with several configurations.
+    @param authUI The auth UI object that this auth UI provider associate with.
+    @param signInMethod The email sign in method, which can be password or email link.
+    @param forceSameDevice Indicate whether for the email sign in link to be open on the same device.
+    @param allowNewEmailAccounts Indicate whether allow sign up if the user doesn't exist.
+    @param requireDisplayName Indicate whether require display name when sign up.
+    @param actionCodeSettings The action code settings for email actions.
+ */
 - (instancetype)initAuthAuthUI:(FUIAuth *)authUI
                   signInMethod:(NSString *)signInMethod
                forceSameDevice:(BOOL)forceSameDevice
          allowNewEmailAccounts:(BOOL)allowNewEmailAccounts
+            requireDisplayName:(BOOL)requireDisplayName
              actionCodeSetting:(FIRActionCodeSettings *)actionCodeSettings;
 
 /** @property signInMethod.
@@ -69,6 +93,11 @@ NS_ASSUME_NONNULL_BEGIN
  */
 @property(nonatomic, assign, readonly) BOOL allowNewEmailAccounts;
 
+/** @property requireDisplayName
+    @brief Whether signup requires display name, defaults to YES.
+ */
+@property(nonatomic, assign, readonly) BOOL requireDisplayName;
+
 /** @fn signInWithPresentingViewController:
     @brief Signs in with email auth provider.
         @see FUIAuthDelegate.authUI:didSignInWithAuthDataResult:URL:error: for method callback.

EmailAuth/FirebaseEmailAuthUI/FUIEmailAuth.m

@@ -81,6 +81,7 @@ - (instancetype)init {
                  signInMethod:FIREmailPasswordAuthSignInMethod
               forceSameDevice:NO
         allowNewEmailAccounts:YES
+           requireDisplayName:YES
             actionCodeSetting:[[FIRActionCodeSettings alloc] init]];
 }
 
@@ -90,14 +91,29 @@ - (instancetype)initAuthAuthUI:(FUIAuth *)authUI
                forceSameDevice:(BOOL)forceSameDevice
          allowNewEmailAccounts:(BOOL)allowNewEmailAccounts
              actionCodeSetting:(FIRActionCodeSettings *)actionCodeSettings {
+  return [self initAuthAuthUI:authUI
+                 signInMethod:signInMethod
+              forceSameDevice:forceSameDevice
+        allowNewEmailAccounts:allowNewEmailAccounts
+           requireDisplayName:YES
+            actionCodeSetting:actionCodeSettings];
+}
+
+- (instancetype)initAuthAuthUI:(FUIAuth *)authUI
+                  signInMethod:(NSString *)signInMethod
+               forceSameDevice:(BOOL)forceSameDevice
+         allowNewEmailAccounts:(BOOL)allowNewEmailAccounts
+            requireDisplayName:(BOOL)requireDisplayName
+             actionCodeSetting:(FIRActionCodeSettings *)actionCodeSettings {
   self = [super init];
   if (self) {
     _authUI = authUI;
     _authUI.emailAuthProvider = self;
     _signInMethod = signInMethod;
     _forceSameDevice = forceSameDevice;
-    _actionCodeSettings = actionCodeSettings;
     _allowNewEmailAccounts = allowNewEmailAccounts;
+    _requireDisplayName = requireDisplayName;
+    _actionCodeSettings = actionCodeSettings;
   }
   return self;
 }

EmailAuth/FirebaseEmailAuthUI/FUIEmailEntryViewController.m

@@ -194,12 +194,14 @@ - (void)onNext:(NSString *)emailText {
         // New user.
         UIViewController *controller;
         if (emailAuth.allowNewEmailAccounts) {
-          if ([delegate respondsToSelector:@selector(passwordSignUpViewControllerForAuthUI:email:)]) {
+          if ([delegate respondsToSelector:@selector(passwordSignUpViewControllerForAuthUI:email:requireDisplayName:)]) {
             controller = [delegate passwordSignUpViewControllerForAuthUI:self.authUI
-                                                                   email:emailText];
+                                                                   email:emailText
+                                                      requireDisplayName:emailAuth.requireDisplayName];
           } else {
             controller = [[FUIPasswordSignUpViewController alloc] initWithAuthUI:self.authUI
-                                                                           email:emailText];
+                                                                           email:emailText
+                                                              requireDisplayName:emailAuth.requireDisplayName];
           }
         } else {
           [self showAlertWithMessage:FUILocalizedString(kStr_UserNotFoundError)];

EmailAuth/FirebaseEmailAuthUI/FUIPasswordSignUpViewController.h

@@ -50,19 +50,23 @@ NS_ASSUME_NONNULL_BEGIN
     @param nibBundleOrNil The bundle in which to search for the nib file.
     @param authUI The @c FUIAuth instance that manages this view controller.
     @param email The email address of the user.
+    @param requireDisplayName Whether the displayname field is required .
  */
 - (instancetype)initWithNibName:(nullable NSString *)nibNameOrNil
                          bundle:(nullable NSBundle *)nibBundleOrNil
                          authUI:(FUIAuth *)authUI
-                          email:(NSString *_Nullable)email NS_DESIGNATED_INITIALIZER;
+                          email:(NSString *_Nullable)email
+             requireDisplayName:(BOOL)requireDisplayName NS_DESIGNATED_INITIALIZER;
 
 /** @fn initWithAuthUI:email:
     @brief Convenience initializer.
     @param authUI The @c FUIAuth instance that manages this view controller.
     @param email The email address of the user.
+    @param requireDisplayName Whether the displayname field is required .
  */
 - (instancetype)initWithAuthUI:(FUIAuth *)authUI
-                          email:(NSString *_Nullable)email;
+                          email:(NSString *_Nullable)email
+             requireDisplayName:(BOOL)requireDisplayName;
 
 /** @fn didChangeEmail:orPassword:orUserName:
     @brief Should be called after any change of email, password or user name value. 

EmailAuth/FirebaseEmailAuthUI/FUIPasswordSignUpViewController.m

@@ -74,6 +74,11 @@ @implementation FUIPasswordSignUpViewController {
    */
   UITextField *_nameField;
 
+  /** @var requireDisplayName
+    @brief Indicate weather display name field is required.
+   */
+  BOOL _requireDisplayName;
+
   /** @var _passwordField
       @brief The @c UITextField that user enters password into.
    */
@@ -86,23 +91,26 @@ @implementation FUIPasswordSignUpViewController {
 }
 
 - (instancetype)initWithAuthUI:(FUIAuth *)authUI
-                         email:(NSString *_Nullable)email {
+                         email:(NSString *_Nullable)email
+            requireDisplayName:(BOOL)requireDisplayName {
   return [self initWithNibName:NSStringFromClass([self class])
                         bundle:[FUIAuthUtils bundleNamed:FUIEmailAuthBundleName]
                         authUI:authUI
-                         email:email];
+                         email:email
+            requireDisplayName:requireDisplayName];
 }
 
 - (instancetype)initWithNibName:(nullable NSString *)nibNameOrNil
                          bundle:(nullable NSBundle *)nibBundleOrNil
                          authUI:(FUIAuth *)authUI
-                          email:(NSString *_Nullable)email {
+                          email:(NSString *_Nullable)email
+             requireDisplayName:(BOOL)requireDisplayName {
   self = [super initWithNibName:nibNameOrNil
                          bundle:nibBundleOrNil
                          authUI:authUI];
   if (self) {
     _email = [email copy];
-
+    _requireDisplayName = requireDisplayName;
     self.title = FUILocalizedString(kStr_SignUpTitle);
   }
   return self;
@@ -233,17 +241,21 @@ - (void)textFieldDidChange {
 - (void)didChangeEmail:(NSString *)email
             orPassword:(NSString *)password
             orUserName:(NSString *)username {
-
-  BOOL enableActionButton = email.length > 0
-                            && password.length > 0
-                            && username.length > 0;
+  BOOL enableActionButton = email.length > 0 && password.length > 0;
+  if (_requireDisplayName) {
+    enableActionButton = enableActionButton && username.length > 0;
+  }
   self.navigationItem.rightBarButtonItem.enabled = enableActionButton;
 }
 
 #pragma mark - UITableViewDataSource
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
-  return 3;
+  if (_requireDisplayName) {
+    return 3;
+  } else {
+    return 2;
+  }
 }
 
 - (UITableViewCell *)tableView:(UITableView *)tableView
@@ -295,6 +307,18 @@ - (UITableViewCell *)tableView:(UITableView *)tableView
     if (@available(iOS 11.0, *)) {
       _passwordField.textContentType = UITextContentTypePassword;
     }
+  } else if (indexPath.row == 2) {
+    cell.label.text = FUILocalizedString(kStr_Name);
+    cell.accessibilityIdentifier = kNameSignUpCellAccessibilityID;
+    _nameField = cell.textField;
+    _nameField.placeholder = FUILocalizedString(kStr_FirstAndLastName);
+    _nameField.secureTextEntry = NO;
+    _nameField.returnKeyType = UIReturnKeyNext;
+    _nameField.keyboardType = UIKeyboardTypeDefault;
+    _nameField.autocapitalizationType = UITextAutocapitalizationTypeWords;
+    if (@available(iOS 10.0, *)) {
+      _nameField.textContentType = UITextContentTypeName;
+    }
   }
   [cell.textField addTarget:self
                      action:@selector(textFieldDidChange)

samples/objc/FirebaseUI-demo-objc/Samples/Auth/FUIAuthViewController.m

@@ -381,9 +381,15 @@ + (NSArray *)getListOfIDPs:(NSArray<NSIndexPath *> *)selectedRows
                                                signInMethod:FIREmailLinkAuthSignInMethod
                                             forceSameDevice:NO
                                       allowNewEmailAccounts:YES
+                                         requireDisplayName:YES
                                           actionCodeSetting:actionCodeSettings];
           } else {
-            provider = [[FUIEmailAuth alloc] init];
+            provider = [[FUIEmailAuth alloc] initAuthAuthUI:[FUIAuth defaultAuthUI]
+                                               signInMethod:FIREmailPasswordAuthSignInMethod
+                                            forceSameDevice:NO
+                                      allowNewEmailAccounts:YES
+                                         requireDisplayName:NO
+                                          actionCodeSetting:[[FIRActionCodeSettings alloc] init]];
           }
           break;
         case kIDPGoogle:

samples/objc/FirebaseUI-demo-objc/Samples/Auth/FUICustomAuthDelegate.m

@@ -69,9 +69,10 @@ - (FUIPasswordSignUpViewController *)passwordSignUpViewControllerForAuthUI:(FUIA
                                                                      email:(NSString *)email {
   return [[FUICustomPasswordSignUpViewController alloc]
               initWithNibName:@"FUICustomPasswordSignUpViewController"
-                       bundle:[NSBundle mainBundle]
-                       authUI:authUI
-                        email:email];
+              bundle:[NSBundle mainBundle]
+              authUI:authUI
+              email:email
+              requireDisplayName:YES];
 }
 
 - (FUIPasswordRecoveryViewController *)

samples/objc/FirebaseUI-demo-objc/Samples/Auth/FUICustomPasswordSignUpViewController.m

@@ -33,7 +33,7 @@ - (instancetype)initWithNibName:(nullable NSString *)nibNameOrNil
                          bundle:(nullable NSBundle *)nibBundleOrNil
                          authUI:(FUIAuth *)authUI
                           email:(NSString *_Nullable)email {
-  self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil authUI:authUI email:email];
+  self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil authUI:authUI email:email requireDisplayName:YES];
 
   if (self) {
     _emailTextField.text = email;