NIOperations.h

//
// Copyright 2011-2014 NimbusKit
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

#import "NIPreprocessorMacros.h" /* for weak */

@class NIOperation;

typedef void (^NIOperationBlock)(NIOperation* operation);
typedef void (^NIOperationDidFailBlock)(NIOperation* operation, NSError* error);

@protocol NIOperationDelegate;

@interface NIOperation : NSOperation

@property (weak) id<NIOperationDelegate> delegate;
@property (readonly, strong) NSError* lastError;
@property (assign) NSInteger tag;

@property (copy) NIOperationBlock didStartBlock;
@property (copy) NIOperationBlock didFinishBlock;
@property (copy) NIOperationDidFailBlock didFailWithErrorBlock;
@property (copy) NIOperationBlock willFinishBlock;

- (void)didStart;
- (void)didFinish;
- (void)didFailWithError:(NSError *)error;
- (void)willFinish;

@end

@protocol NIOperationDelegate <NSObject>
@optional

- (void)nimbusOperationDidStart:(NIOperation *)operation;

- (void)nimbusOperationWillFinish:(NIOperation *)operation;

- (void)nimbusOperationDidFinish:(NIOperation *)operation;

- (void)nimbusOperationDidFail:(NIOperation *)operation withError:(NSError *)error;

@end


// NIOperation