react-native/React/Fabric/Mounting/RCTComponentViewFactory.h
Valentin Shergin e581977b51 Introducing RCTComponentViewFactory
Summary:
The whole mounting iOS infra now uses `ComponentHandle` instead of `std::string` as a reference to particular `ComponentView` implementation. All changes are pretty straightforward, we use a different thing/type to refer to the particular class; no changes in the logic besides a new `RCTComponentViewFactory` that serves the same role of classes registry as Objective-C runtime served previously.
That has several benefits:
* It should be slightly faster, mostly because we don't need to convert `char *` strings to `std::string` and then to `NSString *`.
* We don't need string-based component-name maps anymore (at least on this layer). We can call classes as we want and it will work because of classes are now explicit about which ShadowNodes they are compatible with.
* Most importantly, it's explicit now! That means that no runtime magic is involved anymore and we can rely on static linting tool now and not be afraid of improper code stripping/overoptimization.

Reviewed By: mdvacca

Differential Revision: D13130760

fbshipit-source-id: aadf70525a1335b96992443abae4da359efdc829
2018-11-25 22:17:30 -08:00

38 lines
1009 B
Objective-C

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import <UIKit/UIKit.h>
#import <React/RCTComponentViewProtocol.h>
NS_ASSUME_NONNULL_BEGIN
/**
* Registry of supported component view classes that can instantiate
* view component instances by given component handle.
*/
@interface RCTComponentViewFactory : NSObject
/**
* Constructs and returns an instance of the class with a bunch of already registered standard components.
*/
+ (RCTComponentViewFactory *)standardComponentViewFactory;
/**
* Registers a component view class in the factory.
*/
- (void)registerComponentViewClass:(Class<RCTComponentViewProtocol>)componentViewClass;
/**
* Creates a component view with given component handle.
*/
- (UIView<RCTComponentViewProtocol> *)createComponentViewWithComponentHandle:(facebook::react::ComponentHandle)componentHandle;
@end
NS_ASSUME_NONNULL_END