AGSOperation.h

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 */

#import <Foundation/Foundation.h>

typedef NS_ENUM(NSInteger, AGSOperationState) {
    AGSOperationStateReady,      
    AGSOperationStateExecuting,  
    AGSOperationStateCompleted   
};



@protocol AGSOperation 

#pragma mark properties

@property (nonatomic, assign, readonly) AGSOperationState state;

@property (nullable, nonatomic, copy) void (^internalCompletion)(void);

@property (nonatomic, assign, readonly) BOOL startAsynchronously;

@property (nonatomic, assign, readonly, getter=isCanceled) BOOL canceled;

#pragma mark methods

-(void)cancel;

-(void)execute;

@end


@interface AGSOperationBase : NSObject <AGSOperation>
@end

@interface AGSOperationBase (ForSubclassEyesOnly)

@property (nonatomic, assign, readwrite) BOOL startAsynchronously;

-(void)doExecute;

-(void)doCancel;

-(void)doneExecuting;

-(void)didComplete:(BOOL)everStarted;

@end