Add nullability annotations to PFLogInViewController, PFLogInView.

Author: nlutsenko

ParseUI/Classes/LogInViewController/PFLogInView.h

@@ -23,6 +23,8 @@
 
 #import <ParseUI/ParseUIConstants.h>
 
+PFUI_ASSUME_NONNULL_BEGIN
+
 /*!
  `PFLogInFields` bitmask specifies the log in elements which are enabled in the view.
 
@@ -82,14 +84,14 @@ typedef NS_OPTIONS(NSInteger, PFLogInFields) {
 
  @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
 ///--------------------------------------
 
 /// 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
@@ -114,55 +116,57 @@ typedef NS_OPTIONS(NSInteger, PFLogInFields) {
 /*!
  @abstract The username text field. It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) PFTextField *usernameField;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) PFTextField *usernameField;
 
 /*!
  @abstract The password text field. It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) PFTextField *passwordField;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) PFTextField *passwordField;
 
 /*!
  @abstract The password forgotten button. It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) UIButton *passwordForgottenButton;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) UIButton *passwordForgottenButton;
 
 /*!
  @abstract The log in button. It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) UIButton *logInButton;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) UIButton *logInButton;
 
 /*!
  @abstract The Facebook button. It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) UIButton *facebookButton;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) UIButton *facebookButton;
 
 /*!
  @abstract The Twitter button. It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) UIButton *twitterButton;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) UIButton *twitterButton;
 
 /*!
  @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 It is `nil` if the element is not enabled.
  */
-@property (nonatomic, strong, readonly) UIButton *dismissButton;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) UIButton *dismissButton;
 
 /*!
  @abstract The facebook/twitter login label.
 
  @deprecated This property is deprecated and will always be nil.
  */
-@property (nonatomic, strong, readonly) UILabel *externalLogInLabel __attribute__(PARSE_UI_DEPRECATED("This property is deprecated and will always be nil."));
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) UILabel *externalLogInLabel __attribute__(PARSE_UI_DEPRECATED("This property is deprecated and will always be nil."));
 
 /*!
  @abstract The sign up label.
 
  @deprecated This property is deprecated and will always be nil.
  */
-@property (nonatomic, strong, readonly) UILabel *signUpLabel __attribute__(PARSE_UI_DEPRECATED("This property is deprecated and will always be nil."));
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) UILabel *signUpLabel __attribute__(PARSE_UI_DEPRECATED("This property is deprecated and will always be nil."));
 
 @end
+
+PFUI_ASSUME_NONNULL_END

ParseUI/Classes/LogInViewController/PFLogInViewController.h

@@ -21,8 +21,11 @@
 
 #import <UIKit/UIKit.h>
 
+#import <ParseUI/ParseUIConstants.h>
 #import <ParseUI/PFLogInView.h>
 
+PFUI_ASSUME_NONNULL_BEGIN
+
 @class PFSignUpViewController;
 @class PFUser;
 @protocol PFLogInViewControllerDelegate;
@@ -49,7 +52,7 @@
 
  @see PFLogInView
  */
-@property (nonatomic, strong, readonly) PFLogInView *logInView;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong, readonly) PFLogInView *logInView;
 
 ///--------------------------------------
 /// @name Configuring Log In Behaviors
@@ -60,22 +63,22 @@
 
  @see PFLogInViewControllerDelegate
  */
-@property (nonatomic, weak) id<PFLogInViewControllerDelegate> delegate;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, weak) id<PFLogInViewControllerDelegate> delegate;
 
 /*!
  @abstract The facebook permissions that Facebook log in requests for.
 
  @discussion If unspecified, the default is basic facebook permissions.
  */
-@property (nonatomic, copy) NSArray *facebookPermissions;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, copy) NSArray *facebookPermissions;
 
 /*!
  @abstract The sign up controller if sign up is enabled.
 
  @discussion Use this to configure the sign up view, and the transition animation to the sign up view.
  The default is a sign up view with a username, a password, a dismiss button and a sign up button.
  */
-@property (nonatomic, strong) PFSignUpViewController *signUpController;
+@property (PFUI_NULLABLE_PROPERTY nonatomic, strong) PFSignUpViewController *signUpController;
 
 /*!
  @abstract Whether to prompt for the email as username on the login view.
@@ -155,7 +158,8 @@ shouldBeginLogInWithUsername:(NSString *)username
  @param logInController The login view controller where login failed.
  @param error `NSError` object representing the error that occured.
  */
-- (void)logInViewController:(PFLogInViewController *)logInController didFailToLogInWithError:(NSError *)error;
+- (void)logInViewController:(PFLogInViewController *)logInController
+    didFailToLogInWithError:(PFUI_NULLABLE NSError *)error;
 
 /*!
  @abstract Sent to the delegate when the log in screen is cancelled.
@@ -165,3 +169,5 @@ shouldBeginLogInWithUsername:(NSString *)username
 - (void)logInViewControllerDidCancelLogIn:(PFLogInViewController *)logInController;
 
 @end
+
+PFUI_ASSUME_NONNULL_END