71 lines
1.8 KiB
Objective-C
71 lines
1.8 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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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 "RCTUIManagerObserverCoordinator.h"
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#import "RCTUIManager.h"
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@implementation RCTUIManagerObserverCoordinator {
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NSHashTable<id<RCTUIManagerObserver>> *_observers;
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}
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- (instancetype)init
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{
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if (self = [super init]) {
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_observers = [[NSHashTable alloc] initWithOptions:NSHashTableWeakMemory capacity:0];
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}
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return self;
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}
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- (void)addObserver:(id<RCTUIManagerObserver>)observer
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{
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dispatch_async(RCTGetUIManagerQueue(), ^{
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[self->_observers addObject:observer];
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});
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}
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- (void)removeObserver:(id<RCTUIManagerObserver>)observer
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{
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dispatch_async(RCTGetUIManagerQueue(), ^{
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[self->_observers removeObject:observer];
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});
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}
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#pragma mark - RCTUIManagerObserver
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- (void)uiManagerWillPerformLayout:(RCTUIManager *)manager
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{
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for (id<RCTUIManagerObserver> observer in _observers) {
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if ([observer respondsToSelector:@selector(uiManagerWillPerformLayout:)]) {
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[observer uiManagerWillPerformLayout:manager];
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}
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}
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}
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- (void)uiManagerDidPerformLayout:(RCTUIManager *)manager
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{
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for (id<RCTUIManagerObserver> observer in _observers) {
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if ([observer respondsToSelector:@selector(uiManagerDidPerformLayout:)]) {
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[observer uiManagerDidPerformLayout:manager];
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}
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}
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}
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- (void)uiManagerWillFlushUIBlocks:(RCTUIManager *)manager
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{
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for (id<RCTUIManagerObserver> observer in _observers) {
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if ([observer respondsToSelector:@selector(uiManagerWillFlushUIBlocks:)]) {
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[observer uiManagerWillFlushUIBlocks:manager];
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}
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}
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}
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@end
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