/**
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Copyright (c) 2014-present, Facebook, Inc.
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All rights reserved.
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This source code is licensed under the BSD-style license found in the
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LICENSE file in the root directory of this source tree. An additional grant
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of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "NSObject+FBKVOController.h"
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#import <objc/message.h>
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#if !__has_feature(objc_arc)
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#error This file must be compiled with ARC. Convert your project to ARC or specify the -fobjc-arc flag.
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#endif
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#pragma mark NSObject Category -
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NS_ASSUME_NONNULL_BEGIN
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static void *NSObjectKVOControllerKey = &NSObjectKVOControllerKey;
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static void *NSObjectKVOControllerNonRetainingKey = &NSObjectKVOControllerNonRetainingKey;
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@implementation NSObject (FBKVOController)
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- (FBKVOController *)KVOController
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{
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id controller = objc_getAssociatedObject(self, NSObjectKVOControllerKey);
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// lazily create the KVOController
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if (nil == controller) {
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controller = [FBKVOController controllerWithObserver:self];
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self.KVOController = controller;
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}
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return controller;
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}
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- (void)setKVOController:(FBKVOController *)KVOController
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{
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objc_setAssociatedObject(self, NSObjectKVOControllerKey, KVOController, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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- (FBKVOController *)KVOControllerNonRetaining
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{
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id controller = objc_getAssociatedObject(self, NSObjectKVOControllerNonRetainingKey);
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if (nil == controller) {
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controller = [[FBKVOController alloc] initWithObserver:self retainObserved:NO];
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self.KVOControllerNonRetaining = controller;
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}
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return controller;
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}
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- (void)setKVOControllerNonRetaining:(FBKVOController *)KVOControllerNonRetaining
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{
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objc_setAssociatedObject(self, NSObjectKVOControllerNonRetainingKey, KVOControllerNonRetaining, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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@end
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NS_ASSUME_NONNULL_END
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