Separate interactive dismissal and cancel button customization

Auth/FirebaseAuthUI/FUIAuth.h

@@ -188,11 +188,15 @@ __attribute__((deprecated("Instead use authUI:didSignInWithAuthDataResult:error:
 @property(nonatomic, copy) NSArray<id<FUIAuthProvider>> *providers;
 
 /** @property shouldHideCancelButton
- @brief Whether to hide the cancel button, defaults to NO. On iOS 13, this also disables
-     the swipe-to-dismiss gesture.
+    @brief Whether to hide the cancel button, defaults to NO.
  */
 @property(nonatomic, assign) BOOL shouldHideCancelButton;
 
+/** @property interactiveDismissEnabled
+    @brief Whether or not interactive dismiss should be enabled on iOS 13 and above devices.
+ */
+@property(nonatomic, assign, getter=isInteractiveDismissEnabled) BOOL interactiveDismissEnabled API_AVAILABLE(ios(13));
+
 /** @property customStringsBundle
     @brief Custom strings bundle supplied by the developer. Nil when there is no custom strings
         bundle set. In which case the default bundle will be used.

Auth/FirebaseAuthUI/FUIAuth.m

@@ -107,6 +107,7 @@ - (instancetype)initWithAuth:(FIRAuth *)auth {
   self = [super init];
   if (self) {
     _auth = auth;
+    _interactiveDismissEnabled = YES;
   }
   return self;
 }
@@ -178,7 +179,7 @@ - (void)signInWithProviderUI:(id<FUIAuthProvider>)providerUI
     if (self.auth.currentUser.isAnonymous && !credential) {
       if (result) {
         result(self.auth.currentUser, nil);
-      };
+      }
       // Hide Auth Picker Controller which was presented modally.
       if (isAuthPickerShown && presentingViewController.presentingViewController) {
         [presentingViewController dismissViewControllerAnimated:YES completion:nil];

Auth/FirebaseAuthUI/FUIAuthPickerViewController.m

@@ -102,11 +102,13 @@ - (void)viewDidLoad {
                                                       target:self
                                                       action:@selector(cancelAuthorization)];
     self.navigationItem.leftBarButtonItem = cancelBarButton;
-  } else {
-    if (@available(iOS 13, *)) {
+  }
+  if (@available(iOS 13, *)) {
+    if (!self.authUI.interactiveDismissEnabled) {
       self.modalInPresentation = YES;
     }
   }
+
   self.navigationItem.backBarButtonItem =
       [[UIBarButtonItem alloc] initWithTitle:FUILocalizedString(kStr_Back)
                                        style:UIBarButtonItemStylePlain

EmailAuth/FirebaseEmailAuthUI/FUIConfirmEmailViewController.m

@@ -125,6 +125,12 @@ - (void)viewWillAppear:(BOOL)animated {
                                          style:UIBarButtonItemStylePlain
                                         target:nil
                                         action:nil];
+
+    if (@available(iOS 13, *)) {
+      if (!self.authUI.isInteractiveDismissEnabled) {
+        self.modalInPresentation = YES;
+      }
+    }
   }
 }
 

EmailAuth/FirebaseEmailAuthUI/FUIEmailAuth.h

@@ -32,7 +32,7 @@ NS_ASSUME_NONNULL_BEGIN
 @interface FUIEmailAuth : NSObject <FUIAuthProvider>
 
 /** @property emailLink.
- @brief The link for email link sign in.
+    @brief The link for email link sign in.
  */
 @property(nonatomic, strong, readwrite, nullable) NSString *emailLink;
 

EmailAuth/FirebaseEmailAuthUI/FUIEmailEntryViewController.m

@@ -126,6 +126,12 @@ - (void)viewWillAppear:(BOOL)animated {
                                          style:UIBarButtonItemStylePlain
                                         target:nil
                                         action:nil];
+
+    if (@available(iOS 13, *)) {
+      if (!self.authUI.isInteractiveDismissEnabled) {
+        self.modalInPresentation = YES;
+      }
+    }
   }
 }
 

EmailAuth/FirebaseEmailAuthUI/FUIPasswordSignInViewController.m

@@ -133,6 +133,12 @@ - (void)viewWillAppear:(BOOL)animated {
                                      style:UIBarButtonItemStylePlain
                                     target:nil
                                     action:nil];
+
+    if (@available(iOS 13, *)) {
+      if (!self.authUI.isInteractiveDismissEnabled) {
+        self.modalInPresentation = YES;
+      }
+    }
   }
 }
 

PhoneAuth/FirebasePhoneAuthUI/FUIPhoneEntryViewController.m

@@ -168,6 +168,12 @@ - (void)viewWillAppear:(BOOL)animated {
                                          style:UIBarButtonItemStylePlain
                                         target:nil
                                         action:nil];
+
+    if (@available(iOS 13, *)) {
+      if (!self.authUI.isInteractiveDismissEnabled) {
+        self.modalInPresentation = YES;
+      }
+    }
   }
 }