Files
react-native/React/Fabric/Mounting/RCTComponentViewRegistry.h
T
Valentin SherginandFacebook GitHub Bot f2fdc1a5df Fabric: Simplifying RCTPerformMountInstructions
Summary:
This diff inlines all mount-instruction functions into a single one - RCTPerformMountInstructions.
The main purpose is to reduce the number of calls to `RCTComponentViewRegistry` for some instructions. E.g., before the change, the `Insert` (or `Update`) instruction had seven identical calls to the registry. That's not a huge deal but there is no need to pay for it either. Maybe it can save us a couple of milliseconds during TTI.

The code of those functions is quite straight-forward, so this change probably even improves readability.

Changelog: [Internal] Fabric-specific internal change.

Reviewed By: sammy-SC

Differential Revision: D22402987

fbshipit-source-id: 043a4114ba42622e9ed226f4d5e41ed45c1b066c
2020-07-07 12:01:56 -07:00

61 lines
2.1 KiB
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/RCTComponentViewDescriptor.h>
#import <React/RCTComponentViewFactory.h>
#import <React/RCTComponentViewProtocol.h>
#import <react/core/ReactPrimitives.h>
NS_ASSUME_NONNULL_BEGIN
/**
* Registry of native component views.
* Provides basic functionality for allocation, recycling, and querying (by tag) native view instances.
*/
@interface RCTComponentViewRegistry : NSObject
@property (nonatomic, strong, readonly) RCTComponentViewFactory *componentViewFactory;
/**
* Returns a descriptor referring to a native view instance from the recycle pool (or being created on demand)
* for given `componentHandle` and with given `tag`.
* #RefuseSingleUse
*/
- (RCTComponentViewDescriptor const &)dequeueComponentViewWithComponentHandle:
(facebook::react::ComponentHandle)componentHandle
tag:(facebook::react::Tag)tag;
/**
* Puts a given native component view to the recycle pool.
* #RefuseSingleUse
*/
- (void)enqueueComponentViewWithComponentHandle:(facebook::react::ComponentHandle)componentHandle
tag:(facebook::react::Tag)tag
componentViewDescriptor:(RCTComponentViewDescriptor)componentViewDescriptor;
/**
* Returns a component view descriptor by given `tag`.
*/
- (RCTComponentViewDescriptor const &)componentViewDescriptorWithTag:(facebook::react::Tag)tag;
/**
* Finds a native component view by given `tag`.
* Returns `nil` if there is no registered component with the `tag`.
*/
- (nullable UIView<RCTComponentViewProtocol> *)findComponentViewWithTag:(facebook::react::Tag)tag;
/**
* Creates a component view with a given type and puts it to the recycle pool.
*/
- (void)optimisticallyCreateComponentViewWithComponentHandle:(facebook::react::ComponentHandle)componentHandle;
@end
NS_ASSUME_NONNULL_END