#import <UIKit/UIKit.h>



enum MessageComposeResult {
    MessageComposeResultCancelled,
    MessageComposeResultSent,
    MessageComposeResultFailed
};
typedef enum MessageComposeResult MessageComposeResult;



extern NSString *const MFMessageComposeViewControllerAttachmentURL;

extern NSString *const MFMessageComposeViewControllerAttachmentAlternateFilename;


extern NSString *const MFMessageComposeViewControllerTextMessageAvailabilityDidChangeNotification __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_5_0);



extern NSString *const MFMessageComposeViewControllerTextMessageAvailabilityKey __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_5_0);

@protocol MFMessageComposeViewControllerDelegate;


NS_CLASS_AVAILABLE(NA, 4_0)
@interface MFMessageComposeViewController : UINavigationController {
}

#pragma - mark 能否发送信息
+ (BOOL)canSendText  __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_0);

#pragma - mark 能否在信息中发送主题
+ (BOOL)canSendSubject __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0);

#pragma - mark 能否发送附件
+ (BOOL)canSendAttachments __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0);


+ (BOOL)isSupportedAttachmentUTI:(NSString *)uti __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0);

#pragma - mark 代理
@property(nonatomic,assign) id<MFMessageComposeViewControllerDelegate> messageComposeDelegate;

- (void)disableUserAttachments __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0);


#pragma - mark 收件人列表
@property(nonatomic,copy) NSArray *recipients /*__OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_0)*/;

#pragma - mark 信息内容
@property(nonatomic,copy) NSString *body /*__OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_0)*/;


@property(nonatomic,copy) NSString *subject /*__OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0)*/;

#pragma - mark 附件数组
@property(nonatomic,copy, readonly) NSArray *attachments /*__OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0)*/;

#pragma - mark 增加附件URL
- (BOOL)addAttachmentURL:(NSURL *)attachmentURL withAlternateFilename:(NSString *)alternateFilename __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0);

#pragma - mark 增加附件Data
- (BOOL)addAttachmentData:(NSData *)attachmentData typeIdentifier:(NSString *)uti filename:(NSString *)filename __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0);

@end


@protocol MFMessageComposeViewControllerDelegate <NSObject>
@required
#pragma - mark 发送信息的代理
- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result;

@end