Add nullability annotations to PFSignUpViewController, PFSignUpView.

Author: nlutsenko

ParseUI/Classes/SignUpViewController/PFSignUpView.h

@@ -21,6 +21,10 @@
 
 #import <UIKit/UIKit.h>
 
+#import <ParseUI/ParseUIConstants.h>
+
+PFUI_ASSUME_NONNULL_BEGIN
+
 /*!
  `PFSignUpFields` bitmask specifies the sign up elements which are enabled in the view.
 
@@ -72,7 +76,7 @@ typedef NS_OPTIONS(NSInteger, PFSignUpFields) {
 
  @discussion Used to lay out elements correctly when the presenting view controller has translucent elements.
  */
-@property (nonatomic, weak) UIViewController *presentingViewController;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, weak) UIViewController *presentingViewController;
 
 ///--------------------------------------
 /// @name Customizing the Logo
@@ -81,7 +85,7 @@ typedef NS_OPTIONS(NSInteger, PFSignUpFields) {
 /*!
  @abstract The logo. By default, it is the Parse logo.
  */
-@property (nonatomic, strong) UIView *logo;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong) UIView *logo;
 
 ///--------------------------------------
 /// @name Configure Username Behaviour
@@ -106,33 +110,35 @@ typedef NS_OPTIONS(NSInteger, PFSignUpFields) {
 /*!
  @abstract The username text field.
  */
-@property (nonatomic, strong, readonly) PFTextField *usernameField;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) PFTextField *usernameField;
 
 /*!
  @abstract The password text field.
  */
-@property (nonatomic, strong, readonly) PFTextField *passwordField;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) PFTextField *passwordField;
 
 /*!
  @abstract The email text field. It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) PFTextField *emailField;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) PFTextField *emailField;
 
 /*!
  @abstract The additional text field. It is `nil` if the element is not enabled.
 
  @discussion This field is intended to be customized.
  */
-@property (nonatomic, strong, readonly) PFTextField *additionalField;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) PFTextField *additionalField;
 
 /*!
  @abstract The sign up button. It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) UIButton *signUpButton;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) UIButton *signUpButton;
 
 /*!
  @abstract The dismiss button. It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) UIButton *dismissButton;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) UIButton *dismissButton;
 
 @end
+
+PFUI_ASSUME_NONNULL_END

ParseUI/Classes/SignUpViewController/PFSignUpViewController.h

@@ -21,11 +21,14 @@
 
 #import <UIKit/UIKit.h>
 
+#import <ParseUI/ParseUIConstants.h>
 #import <ParseUI/PFSignUpView.h>
 
 @class PFUser;
 @protocol PFSignUpViewControllerDelegate;
 
+PFUI_ASSUME_NONNULL_BEGIN
+
 /*!
  The `PFSignUpViewController` class that presents and manages
  a standard authentication interface for signing up a <PFUser>.
@@ -48,7 +51,7 @@
 
  @see PFSignUpView
  */
-@property (nonatomic, strong, readonly) PFSignUpView *signUpView;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) PFSignUpView *signUpView;
 
 ///--------------------------------------
 /// @name Configuring Sign Up Behaviors
@@ -59,7 +62,7 @@
 
  @see PFSignUpViewControllerDelegate
  */
-@property (nonatomic, weak) id<PFSignUpViewControllerDelegate> delegate;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, weak) id<PFSignUpViewControllerDelegate> delegate;
 
 /*!
  @abstract Minimum required password length for user signups, defaults to `0`.
@@ -142,7 +145,8 @@ extern NSString *const PFSignUpCancelNotification;
  @param signUpController The signup view controller where signup failed.
  @param error `NSError` object representing the error that occured.
  */
-- (void)signUpViewController:(PFSignUpViewController *)signUpController didFailToSignUpWithError:(NSError *)error;
+- (void)signUpViewController:(PFSignUpViewController *)signUpController
+    didFailToSignUpWithError:(PFUI_NULLABLE NSError *)error;
 
 /*!
  @abstract Sent to the delegate when the sign up screen is cancelled.
@@ -152,3 +156,5 @@ extern NSString *const PFSignUpCancelNotification;
 - (void)signUpViewControllerDidCancelSignUp:(PFSignUpViewController *)signUpController;
 
 @end
+
+PFUI_ASSUME_NONNULL_END