mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
93ded152d9
Summary: This diff introduces RCTComponentViewDescriptor - the container for a view and associated with this view properties which mounting infra uses for bookkeeping (and recycling) views. The previous implementation used raw Objective-C pointers to `UIView`s to store and manipulate them. The new way has a bunch of advantages: * It allows using high-performant C++ data collections for storing views and their properties (in future diffs). * The new approach allows us to avoid hacks around NSMapTable (such as ` [_registry setObject:componentView forKey:(__bridge id)(void *)tag];`) that were needed because NSMapTable wasn't designed for our use-case. * Dealing with `RCTComponentViewDescriptor` which stores a pointer to a view sometimes is actually more efficient than dealing with those pointers themselfs because we can deal with `const &` to a descriptor which does not require a ref-counter bump. * A new approach is much more flexible, it allows us to store additional data alongside view instances which we will use in coming diffs. Changelog: [Internal] Fabric-specific internal change. Reviewed By: sammy-SC Differential Revision: D18217102 fbshipit-source-id: 063e6c7df794a2e1fd690c194fb31ad6833eaba7
53 lines
1.6 KiB
Objective-C
53 lines
1.6 KiB
Objective-C
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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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 <UIKit/UIKit.h>
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#import <React/RCTComponentViewDescriptor.h>
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#import <React/RCTComponentViewProtocol.h>
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#import <react/uimanager/ComponentDescriptorRegistry.h>
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NS_ASSUME_NONNULL_BEGIN
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/**
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* Registry of supported component view classes that can instantiate
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* view component instances by given component handle.
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*/
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@interface RCTComponentViewFactory : NSObject
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/**
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* Constructs and returns an instance of the class with a bunch of already registered standard components.
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*/
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+ (RCTComponentViewFactory *)standardComponentViewFactory;
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/**
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* Registers a component view class in the factory.
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*/
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- (void)registerComponentViewClass:(Class<RCTComponentViewProtocol>)componentViewClass;
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/**
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* Unregisters a component view class in the factory.
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*/
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- (void)unregisterComponentViewClass:(Class<RCTComponentViewProtocol>)componentViewClass;
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/**
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* Creates a component view with given component handle.
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*/
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- (RCTComponentViewDescriptor)createComponentViewWithComponentHandle:(facebook::react::ComponentHandle)componentHandle;
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/**
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* Creates *managed* `ComponentDescriptorRegistry`. After creation, the object continues to store a weak pointer to the
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* registry and update it accordingly to the changes in the object.
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*/
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- (facebook::react::ComponentDescriptorRegistry::Shared)createComponentDescriptorRegistryWithParameters:
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(facebook::react::ComponentDescriptorParameters)parameters;
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@end
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NS_ASSUME_NONNULL_END
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