[Sources] Add nullability annotations.

RSKKeyboardAnimationObserver/UIViewController+RSKKeyboardAnimationObserver.h

@@ -25,121 +25,125 @@
 
 #import <UIKit/UIKit.h>
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface UIViewController (RSKKeyboardAnimationObserver)
 
 /**
  Block to handle a start point of animation, could be used for simultaneous animations OR for setting some flags for internal usage.
-
+ 
  @param keyboardRectEnd  The end frame of the keyboard.
  @param duration         Duration for keyboard change frame animation.
-*/
+ */
 typedef void(^RSKKeyboardBeforeWillChangeFrameAnimationBlock)(CGRect keyboardRectEnd, NSTimeInterval duration);
 
 /**
  Block to handle a start point of animation, could be used for simultaneous animations OR for setting some flags for internal usage.
-
+ 
  @param keyboardRectEnd  The end frame of the keyboard.
  @param duration         Duration for keyboard showing animation.
  @param isShowing        If isShowing is YES we will handle keyboard showing, if NO we will process keyboard dismissing.
-*/
+ */
 typedef void(^RSKKeyboardBeforeWillShowOrHideAnimationBlock)(CGRect keyboardRectEnd, NSTimeInterval duration, BOOL isShowing);
 
 /**
  Block which contains user defined animations.
-
+ 
  @param keyboardRectEnd  The end frame of the keyboard.
  @param duration         Duration for keyboard change frame animation.
-*/
+ */
 typedef void(^RSKKeyboardWillChangeFrameAnimationBlock)(CGRect keyboardRectEnd, NSTimeInterval duration);
 
 /**
  Block to handle completion of keyboard animation.
-
+ 
  @param finished If NO animation was canceled during performing.
-*/
+ */
 typedef void(^RSKKeyboardWillChangeFrameAnimationCompletionBlock)(BOOL finished);
 
 /**
  Block which contains user defined animations.
-
+ 
  @param keyboardRectEnd  The end frame of the keyboard.
  @param duration         Duration for keyboard showing animation.
  @param isShowing        If isShowing is YES we handle keyboard showing, if NO we process keyboard dismissing.
-*/
+ */
 typedef void(^RSKKeyboardWillShowOrHideAnimationBlock)(CGRect keyboardRectEnd, NSTimeInterval duration, BOOL isShowing);
 
 /**
  Block to handle completion of keyboard animation.
-
+ 
  @param finished If NO animation was canceled during performing.
  @param isShown  If YES the keyboard was shown.
-*/
+ */
 typedef void(^RSKKeyboardWillShowOrHideAnimationCompletionBlock)(BOOL finished, BOOL isShown);
 
 /**
  Animation block will be called inside [UIView animateWithDuration:::::].
-
+ 
  @tip viewDidAppear is the best place to subscribe to keyboard events.
-
+ 
  @param beforeWillChangeFrameAnimationBlock  Preanimation actions should be performed inside this block.
  @param willChangeFrameAnimationBlock        User defined animations. If using auto layout don't forget to call layoutIfNeeded.
  @param completionBlock                      User defined completion block, will be called when animation ends.
-
+ 
  @warning These blocks will be holding inside UIViewController which calls it, so as with any block-style API avoid a retain cycle.
-*/
-- (void)rsk_subscribeKeyboardWithBeforeWillChangeFrameAnimation:(RSKKeyboardBeforeWillChangeFrameAnimationBlock)beforeWillChangeFrameAnimationBlock
-                                        willChangeFrameAnimation:(RSKKeyboardWillChangeFrameAnimationBlock)willChangeFrameAnimationBlock
-                                                      onComplete:(RSKKeyboardWillChangeFrameAnimationCompletionBlock)completionBlock;
+ */
+- (void)rsk_subscribeKeyboardWithBeforeWillChangeFrameAnimation:(nullable RSKKeyboardBeforeWillChangeFrameAnimationBlock)beforeWillChangeFrameAnimationBlock
+                                       willChangeFrameAnimation:(nullable RSKKeyboardWillChangeFrameAnimationBlock)willChangeFrameAnimationBlock
+                                                     onComplete:(nullable RSKKeyboardWillChangeFrameAnimationCompletionBlock)completionBlock;
 
 /**
  Animation block will be called inside [UIView animateWithDuration:::::].
-
+ 
  @tip viewDidAppear is the best place to subscribe to keyboard events.
-
+ 
  @param beforeWillShowOrHideAnimationBlock   Preanimation actions should be performed inside this block.
  @param willShowOrHideAnimationBlock         User defined animations. If using auto layout don't forget to call layoutIfNeeded.
  @param completionBlock                      User defined completion block, will be called when animation ends.
-
+ 
  @warning These blocks will be holding inside UIViewController which calls it, so as with any block-style API avoid a retain cycle.
-*/
-- (void)rsk_subscribeKeyboardWithBeforeWillShowOrHideAnimation:(RSKKeyboardBeforeWillShowOrHideAnimationBlock)beforeWillShowOrHideAnimationBlock
-                                        willShowOrHideAnimation:(RSKKeyboardWillShowOrHideAnimationBlock)willShowOrHideAnimationBlock
-                                                     onComplete:(RSKKeyboardWillShowOrHideAnimationCompletionBlock)completionBlock;
+ */
+- (void)rsk_subscribeKeyboardWithBeforeWillShowOrHideAnimation:(nullable RSKKeyboardBeforeWillShowOrHideAnimationBlock)beforeWillShowOrHideAnimationBlock
+                                       willShowOrHideAnimation:(nullable RSKKeyboardWillShowOrHideAnimationBlock)willShowOrHideAnimationBlock
+                                                    onComplete:(nullable RSKKeyboardWillShowOrHideAnimationCompletionBlock)completionBlock;
 
 /**
  Animation block will be called inside [UIView animateWithDuration:::::].
-
+ 
  @tip viewDidAppear is the best place to subscribe to keyboard events.
-
+ 
  @param willChangeFrameAnimationBlock    User defined animations. If using auto layout don't forget to call layoutIfNeeded.
  @param completionBlock                  User defined completion block, will be called when animation ends.
-
+ 
  @warning These blocks will be holding inside UIViewController which calls it, so as with any block-style API avoid a retain cycle.
-*/
-- (void)rsk_subscribeKeyboardWithWillChangeFrameAnimation:(RSKKeyboardWillChangeFrameAnimationBlock)willChangeFrameAnimationBlock
-                                                onComplete:(RSKKeyboardWillChangeFrameAnimationCompletionBlock)completionBlock;
+ */
+- (void)rsk_subscribeKeyboardWithWillChangeFrameAnimation:(nullable RSKKeyboardWillChangeFrameAnimationBlock)willChangeFrameAnimationBlock
+                                               onComplete:(nullable RSKKeyboardWillChangeFrameAnimationCompletionBlock)completionBlock;
 
 /**
  Animation block will be called inside [UIView animateWithDuration:::::].
-
+ 
  @tip viewDidAppear is the best place to subscribe to keyboard events.
-
+ 
  @param willShowOrHideAnimationBlock User defined animations. If using auto layout don't forget to call layoutIfNeeded.
  @param completionBlock              User defined completion block, will be called when animation ends.
-
+ 
  @warning These blocks will be holding inside UIViewController which calls it, so as with any block-style API avoid a retain cycle.
-*/
-- (void)rsk_subscribeKeyboardWithWillShowOrHideAnimation:(RSKKeyboardWillShowOrHideAnimationBlock)willShowOrHideAnimationBlock
-                                               onComplete:(RSKKeyboardWillShowOrHideAnimationCompletionBlock)completionBlock;
+ */
+- (void)rsk_subscribeKeyboardWithWillShowOrHideAnimation:(nullable RSKKeyboardWillShowOrHideAnimationBlock)willShowOrHideAnimationBlock
+                                              onComplete:(nullable RSKKeyboardWillShowOrHideAnimationCompletionBlock)completionBlock;
 
 /**
-
+ 
  Call it to unsubscribe from keyboard events and clean all animations and completion blocks.
-
+ 
  @tip viewDidDisappear is the best place to call it.
-
+ 
  @warning If you will not call it when current view disappeared, subscribed view controller will handle keyboard events on other screens.
-*/
+ */
 - (void)rsk_unsubscribeKeyboard;
 
 @end
+
+NS_ASSUME_NONNULL_END