Add nullability annotations.

JTCalendar/JTCalendarDelegate.h

@@ -14,6 +14,7 @@
 
 @class JTCalendarManager;
 
+NS_ASSUME_NONNULL_BEGIN
 @protocol JTCalendarDelegate <NSObject>
 
 @optional
@@ -113,3 +114,4 @@
 - (void)calendar:(JTCalendarManager *)calendar didTouchDayView:(UIView<JTCalendarDay> *)dayView;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/JTCalendarManager.h

@@ -18,12 +18,13 @@
 #import "JTCalendarDelegateManager.h"
 #import "JTCalendarScrollManager.h"
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTCalendarManager : NSObject
 
-@property (nonatomic, weak) id<JTCalendarDelegate> delegate;
+@property (nonatomic, weak, nullable) id<JTCalendarDelegate> delegate;
 
-@property (nonatomic, weak) UIView<JTMenu> *menuView;
-@property (nonatomic, weak) UIScrollView<JTContent> *contentView;
+@property (nonatomic, weak, nullable) UIView<JTMenu> *menuView;
+@property (nonatomic, weak, nullable) UIScrollView<JTContent> *contentView;
 
 @property (nonatomic, readonly) JTDateHelper *dateHelper;
 @property (nonatomic, readonly) JTCalendarSettings *settings;
@@ -42,3 +43,4 @@
 
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/JTCalendarSettings.h

@@ -13,6 +13,7 @@ typedef NS_ENUM(NSInteger, JTCalendarWeekDayFormat) {
     JTCalendarWeekDayFormatFull
 };
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTCalendarSettings : NSObject
 
 
@@ -38,3 +39,4 @@ typedef NS_ENUM(NSInteger, JTCalendarWeekDayFormat) {
 - (void)commonInit;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/JTDateHelper.h

@@ -7,21 +7,22 @@
 
 #import <Foundation/Foundation.h>
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTDateHelper : NSObject
 
 - (NSCalendar *)calendar;
 - (NSDateFormatter *)createDateFormatter;
 
-- (NSDate *)addToDate:(NSDate *)date months:(NSInteger)months;
-- (NSDate *)addToDate:(NSDate *)date weeks:(NSInteger)weeks;
-- (NSDate *)addToDate:(NSDate *)date days:(NSInteger)days;
+- (nullable NSDate *)addToDate:(NSDate *)date months:(NSInteger)months;
+- (nullable NSDate *)addToDate:(NSDate *)date weeks:(NSInteger)weeks;
+- (nullable NSDate *)addToDate:(NSDate *)date days:(NSInteger)days;
 
 // Must be less or equal to 6
 - (NSUInteger)numberOfWeeks:(NSDate *)date;
 
-- (NSDate *)firstDayOfMonth:(NSDate *)date;
-- (NSDate *)firstWeekDayOfMonth:(NSDate *)date;
-- (NSDate *)firstWeekDayOfWeek:(NSDate *)date;
+- (nullable NSDate *)firstDayOfMonth:(NSDate *)date;
+- (nullable NSDate *)firstWeekDayOfMonth:(NSDate *)date;
+- (nullable NSDate *)firstWeekDayOfWeek:(NSDate *)date;
 
 - (BOOL)date:(NSDate *)dateA isTheSameMonthThan:(NSDate *)dateB;
 - (BOOL)date:(NSDate *)dateA isTheSameWeekThan:(NSDate *)dateB;
@@ -32,3 +33,4 @@
 - (BOOL)date:(NSDate *)date isEqualOrAfter:(NSDate *)startDate andEqualOrBefore:(NSDate *)endDate;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Managers/JTCalendarDelegateManager.h

@@ -11,9 +11,10 @@
 
 // Provide a default behavior when no delegate are provided
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTCalendarDelegateManager : NSObject
 
-@property (nonatomic, weak) JTCalendarManager *manager;
+@property (nonatomic, weak, nullable) JTCalendarManager *manager;
 
 // Menu view
 
@@ -46,3 +47,4 @@
 - (void)didTouchDayView:(UIView<JTCalendarDay> *)dayView;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Managers/JTCalendarScrollManager.h

@@ -13,13 +13,13 @@
 #import "JTContent.h"
 
 // Synchronize JTHorizontalCalendarView and JTCalendarMenuView
-
+NS_ASSUME_NONNULL_BEGIN
 @interface JTCalendarScrollManager : NSObject
 
-@property (nonatomic, weak) JTCalendarManager *manager;
+@property (nonatomic, weak, nullable) JTCalendarManager *manager;
 
-@property (nonatomic, weak) UIView<JTMenu> *menuView;
-@property (nonatomic, weak) UIScrollView<JTContent> *horizontalContentView;
+@property (nonatomic, weak, nullable) UIView<JTMenu> *menuView;
+@property (nonatomic, weak, nullable) UIScrollView<JTContent> *horizontalContentView;
 
 - (void)setMenuPreviousDate:(NSDate *)previousDate
                 currentDate:(NSDate *)currentDate
@@ -29,3 +29,4 @@
 - (void)updateHorizontalContentOffset:(CGFloat)percentage;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Protocols/JTCalendarDay.h

@@ -9,6 +9,7 @@
 
 @class JTCalendarManager;
 
+NS_ASSUME_NONNULL_BEGIN
 @protocol JTCalendarDay <NSObject>
 
 - (void)setManager:(JTCalendarManager *)manager;
@@ -20,3 +21,4 @@
 - (void)setIsFromAnotherMonth:(BOOL)isFromAnotherMonth;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Protocols/JTCalendarPage.h

@@ -9,6 +9,7 @@
 
 @class JTCalendarManager;
 
+NS_ASSUME_NONNULL_BEGIN
 @protocol JTCalendarPage <NSObject>
 
 - (void)setManager:(JTCalendarManager *)manager;
@@ -19,3 +20,4 @@
 - (void)reload;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Protocols/JTCalendarWeek.h

@@ -9,6 +9,7 @@
 
 @class JTCalendarManager;
 
+NS_ASSUME_NONNULL_BEGIN
 @protocol JTCalendarWeek <NSObject>
 
 - (void)setManager:(JTCalendarManager *)manager;
@@ -17,3 +18,4 @@
 - (void)setStartDate:(NSDate *)startDate updateAnotherMonth:(BOOL)enable monthDate:(NSDate *)monthDate;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Protocols/JTCalendarWeekDay.h

@@ -9,10 +9,12 @@
 
 @class JTCalendarManager;
 
+NS_ASSUME_NONNULL_BEGIN
 @protocol JTCalendarWeekDay <NSObject>
 
 - (void)setManager:(JTCalendarManager *)manager;
 
 - (void)reload;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Protocols/JTContent.h

@@ -9,6 +9,7 @@
 
 @class JTCalendarManager;
 
+NS_ASSUME_NONNULL_BEGIN
 @protocol JTContent <NSObject>
 
 - (void)setManager:(JTCalendarManager *)manager;
@@ -23,3 +24,4 @@
 - (void)loadNextPageWithAnimation;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Protocols/JTMenu.h

@@ -9,6 +9,7 @@
 
 @class JTCalendarManager;
 
+NS_ASSUME_NONNULL_BEGIN
 @protocol JTMenu <NSObject>
 
 - (void)setManager:(JTCalendarManager *)manager;
@@ -22,3 +23,4 @@
 - (UIScrollView *)scrollView;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Views/JTCalendarDayView.h

@@ -9,9 +9,10 @@
 
 #import "JTCalendarDay.h"
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTCalendarDayView : UIView<JTCalendarDay>
 
-@property (nonatomic, weak) JTCalendarManager *manager;
+@property (nonatomic, weak, nullable) JTCalendarManager *manager;
 
 @property (nonatomic) NSDate *date;
 
@@ -30,3 +31,4 @@
 - (void)commonInit;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Views/JTCalendarMenuView.h

@@ -9,9 +9,10 @@
 
 #import "JTMenu.h"
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTCalendarMenuView : UIView<JTMenu, UIScrollViewDelegate>
 
-@property (nonatomic, weak) JTCalendarManager *manager;
+@property (nonatomic, weak, nullable) JTCalendarManager *manager;
 
 @property (nonatomic) CGFloat contentRatio;
 
@@ -23,3 +24,4 @@
 - (void)commonInit;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Views/JTCalendarPageView.h

@@ -9,9 +9,10 @@
 
 #import "JTCalendarPage.h"
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTCalendarPageView : UIView<JTCalendarPage>
 
-@property (nonatomic, weak) JTCalendarManager *manager;
+@property (nonatomic, weak, nullable) JTCalendarManager *manager;
 
 @property (nonatomic) NSDate *date;
 
@@ -21,3 +22,4 @@
 - (void)commonInit;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Views/JTCalendarWeekDayView.h

@@ -9,11 +9,12 @@
 
 #import "JTCalendarWeekDay.h"
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTCalendarWeekDayView : UIView<JTCalendarWeekDay>
 
-@property (nonatomic, weak) JTCalendarManager *manager;
+@property (nonatomic, weak, nullable) JTCalendarManager *manager;
 
-@property (nonatomic, readonly) NSArray *dayViews;
+@property (nonatomic, readonly) NSArray<UILabel *> *dayViews;
 
 /*!
  * Must be call if override the class
@@ -26,3 +27,4 @@
 - (void)reload;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Views/JTCalendarWeekView.h

@@ -9,9 +9,10 @@
 
 #import "JTCalendarWeek.h"
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTCalendarWeekView : UIView<JTCalendarWeek>
 
-@property (nonatomic, weak) JTCalendarManager *manager;
+@property (nonatomic, weak, nullable) JTCalendarManager *manager;
 
 @property (nonatomic, readonly) NSDate *startDate;
 
@@ -21,3 +22,4 @@
 - (void)commonInit;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Views/JTHorizontalCalendarView.h

@@ -9,9 +9,10 @@
 
 #import "JTContent.h"
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTHorizontalCalendarView : UIScrollView<JTContent>
 
-@property (nonatomic, weak) JTCalendarManager *manager;
+@property (nonatomic, weak, nullable) JTCalendarManager *manager;
 
 @property (nonatomic) NSDate *date;
 
@@ -21,3 +22,4 @@
 - (void)commonInit;
 
 @end
+NS_ASSUME_NONNULL_END

JTCalendar/Views/JTVerticalCalendarView.h

@@ -9,9 +9,10 @@
 
 #import "JTContent.h"
 
+NS_ASSUME_NONNULL_BEGIN
 @interface JTVerticalCalendarView : UIScrollView<JTContent>
 
-@property (nonatomic, weak) JTCalendarManager *manager;
+@property (nonatomic, weak, nullable) JTCalendarManager *manager;
 
 @property (nonatomic) NSDate *date;
 
@@ -21,3 +22,4 @@
 - (void)commonInit;
 
 @end
+NS_ASSUME_NONNULL_END