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| // | ||
| // BIOperationNotifier.h | ||
| // BIObjCHelpers | ||
| // | ||
| // Created by Bogdan Iusco on 5/11/16. | ||
| // Copyright © 2016 iGama Apps. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| @class BIOperationNotifier; | ||
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| @protocol BIOperationNotifierListener <NSObject> | ||
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| @optional | ||
| - (void)operation:(BIOperationNotifier *__nonnull)operation didFinishWithResponse:(id __nullable)response; | ||
| - (void)operation:(BIOperationNotifier *__nonnull)operation didFinishWithError:(NSError *__nullable)error; | ||
| - (void)operationDidFinishCommon:(BIOperationNotifier *__nonnull)operation; | ||
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| @end | ||
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| @interface BIOperationNotifier : NSOperation | ||
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| @property (nonatomic, copy, nullable) void(^didFinishWithErrorCallback)(NSError *__nonnull error); | ||
| @property (nonatomic, copy, nullable) void(^didFinishSuccessfullyCallback)(id __nonnull responseObject); | ||
| @property (nonatomic, copy, nullable) void(^didFinishCommonCallback)(); | ||
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| - (void)registerOperationFinishedListener:(id<BIOperationNotifierListener> __nonnull)listener; | ||
| - (void)unregisterOperationFinishedListener:(id<BIOperationNotifierListener> __nonnull)listener; | ||
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| - (void)safeCallDidFinishWithErrorCallback:(nonnull NSError *)error; | ||
| - (void)safeCallDidFinishSuccessfullyCallback:(nonnull id)responseObject; | ||
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| @end |
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| // | ||
| // BIOperationNotifier.m | ||
| // BIObjCHelpers | ||
| // | ||
| // Created by Bogdan Iusco on 5/11/16. | ||
| // Copyright © 2016 iGama Apps. All rights reserved. | ||
| // | ||
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| #import "BIOperationNotifier.h" | ||
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| @interface BIOperationNotifier() | ||
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| @property (nonatomic, strong, nullable, readwrite) NSHashTable <id<BIOperationNotifierListener>> *operationFinishedListeners; | ||
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| @end | ||
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| @implementation BIOperationNotifier | ||
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| - (void)safeCallDidFinishWithErrorCallback:(nonnull NSError *)error { | ||
| dispatch_async(dispatch_get_main_queue(), ^{ | ||
| [self BI_notifyOperationDidFinishWithError:error]; | ||
| [self safeCallDidFinishCommon]; | ||
| }); | ||
| } | ||
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| - (void)safeCallDidFinishSuccessfullyCallback:(nonnull id)responseObject { | ||
| dispatch_async(dispatch_get_main_queue(), ^{ | ||
| [self BI_notifyOperationDidFinishWithResponse:responseObject]; | ||
| [self safeCallDidFinishCommon]; | ||
| }); | ||
| } | ||
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| - (void)safeCallDidFinishCommon { | ||
| dispatch_async(dispatch_get_main_queue(), ^{ | ||
| [self BI_notifyOperationDidFinishCommon]; | ||
| }); | ||
| } | ||
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| #pragma mark - Public methods | ||
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| - (void)registerOperationFinishedListener:(id<BIOperationNotifierListener>)listener { | ||
| [self.operationFinishedListeners addObject:listener]; | ||
| } | ||
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| - (void)unregisterOperationFinishedListener:(id<BIOperationNotifierListener>)listener { | ||
| [self.operationFinishedListeners removeObject:listener]; | ||
| } | ||
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| #pragma mark - Properties methods | ||
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| - (NSHashTable<id<BIOperationNotifierListener>> *)operationFinishedListeners { | ||
| if (!_operationFinishedListeners) { | ||
| _operationFinishedListeners = [NSHashTable weakObjectsHashTable]; | ||
| } | ||
| return _operationFinishedListeners; | ||
| } | ||
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| #pragma mark - Private methods | ||
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| - (void)BI_notifyOperationDidFinishWithResponse:(id __nullable)response { | ||
| if (self.didFinishSuccessfullyCallback) { | ||
| self.didFinishSuccessfullyCallback(response); | ||
| } | ||
| NSHashTable *copiedListeners = [self.operationFinishedListeners copy]; | ||
| for (id<BIOperationNotifierListener> listener in copiedListeners) { | ||
| if ([listener respondsToSelector:@selector(operation:didFinishWithResponse:)]) { | ||
| [listener operation:self didFinishWithResponse:response]; | ||
| } | ||
| } | ||
| } | ||
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| - (void)BI_notifyOperationDidFinishWithError:(NSError *__nullable)error { | ||
| if (self.didFinishWithErrorCallback) { | ||
| self.didFinishWithErrorCallback(error); | ||
| } | ||
| NSHashTable *copiedListeners = [self.operationFinishedListeners copy]; | ||
| for (id<BIOperationNotifierListener> listener in copiedListeners) { | ||
| if ([listener respondsToSelector:@selector(operation:didFinishWithError:)]) { | ||
| [listener operation:self didFinishWithError:error]; | ||
| } | ||
| } | ||
| } | ||
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| - (void)BI_notifyOperationDidFinishCommon { | ||
| if (self.didFinishCommonCallback) { | ||
| self.didFinishCommonCallback(); | ||
| } | ||
| NSHashTable *copiedListeners = [self.operationFinishedListeners copy]; | ||
| for (id<BIOperationNotifierListener> listener in copiedListeners) { | ||
| if ([listener respondsToSelector:@selector(operationDidFinishCommon:)]) { | ||
| [listener operationDidFinishCommon:self]; | ||
| } | ||
| } | ||
| } | ||
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| @end |