107 строки
3.6 KiB
Plaintext
107 строки
3.6 KiB
Plaintext
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import "RCTComponentViewRegistry.h"
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#import <Foundation/NSMapTable.h>
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#import <React/RCTAssert.h>
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const NSInteger RCTComponentViewRegistryRecyclePoolMaxSize = 256;
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@implementation RCTComponentViewRegistry {
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NSMapTable<id, UIView<RCTComponentViewProtocol> *> *_registry;
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NSMapTable<NSString *, NSHashTable<UIView<RCTComponentViewProtocol> *> *> *_recyclePool;
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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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_registry = [NSMapTable mapTableWithKeyOptions:NSPointerFunctionsIntegerPersonality | NSPointerFunctionsOpaqueMemory
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valueOptions:NSPointerFunctionsObjectPersonality];
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_recyclePool = [NSMapTable mapTableWithKeyOptions:NSPointerFunctionsObjectPersonality
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valueOptions:NSPointerFunctionsObjectPersonality];
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}
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return self;
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}
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- (UIView<RCTComponentViewProtocol> *)dequeueComponentViewWithName:(NSString *)componentName
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tag:(ReactTag)tag
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{
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RCTAssertMainQueue();
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UIView<RCTComponentViewProtocol> *componentView =
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[self _dequeueComponentViewWithName:componentName];
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componentView.tag = tag;
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[_registry setObject:componentView forKey:(__bridge id)(void *)tag];
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return componentView;
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}
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- (void)enqueueComponentViewWithName:(NSString *)componentName
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tag:(ReactTag)tag
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componentView:(UIView<RCTComponentViewProtocol> *)componentView
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{
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RCTAssertMainQueue();
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[_registry removeObjectForKey:(__bridge id)(void *)tag];
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componentView.tag = 0;
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[self _enqueueComponentViewWithName:componentName componentView:componentView];
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}
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- (UIView<RCTComponentViewProtocol> *)componentViewByTag:(ReactTag)tag
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{
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RCTAssertMainQueue();
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return [_registry objectForKey:(__bridge id)(void *)tag];
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}
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- (ReactTag)tagByComponentView:(UIView<RCTComponentViewProtocol> *)componentView
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{
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RCTAssertMainQueue();
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return componentView.tag;
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}
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- (UIView<RCTComponentViewProtocol> *)_createComponentViewWithName:(NSString *)componentName
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{
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RCTAssertMainQueue();
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// This is temporary approach.
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NSString *className = [NSString stringWithFormat:@"RCT%@ComponentView", componentName];
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UIView<RCTComponentViewProtocol> *componentView = [[NSClassFromString(className) alloc] init];
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return componentView;
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}
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- (nullable UIView<RCTComponentViewProtocol> *)_dequeueComponentViewWithName:(NSString *)componentName
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{
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RCTAssertMainQueue();
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NSHashTable<UIView<RCTComponentViewProtocol> *> *componentViews = [_recyclePool objectForKey:componentName];
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if (!componentViews || componentViews.count == 0) {
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return [self _createComponentViewWithName:componentName];
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}
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UIView<RCTComponentViewProtocol> *componentView = [componentViews anyObject];
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[componentViews removeObject:componentView];
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return componentView;
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}
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- (void)_enqueueComponentViewWithName:(NSString *)componentName
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componentView:(UIView<RCTComponentViewProtocol> *)componentView
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{
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RCTAssertMainQueue();
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[componentView prepareForRecycle];
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NSHashTable<UIView<RCTComponentViewProtocol> *> *componentViews = [_recyclePool objectForKey:componentName];
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if (!componentViews) {
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componentViews = [NSHashTable hashTableWithOptions:NSPointerFunctionsObjectPersonality];
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[_recyclePool setObject:componentViews forKey:componentName];
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}
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if (componentViews.count >= RCTComponentViewRegistryRecyclePoolMaxSize) {
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return;
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}
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[componentViews addObject:componentView];
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}
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@end
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